annotate th_regex.c @ 664:c5aa9ada1051

s/th_regex_char_t/th_char_t/g
author Matti Hamalainen <ccr@tnsp.org>
date Mon, 27 Jan 2020 07:48:27 +0200
parents 253a341216b7
children e1d27caf0dbd
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1 /*
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2 * Simple regular expression matching functionality
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3 * Programmed and designed by Matti 'ccr' Hamalainen
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4 * (C) Copyright 2020 Tecnic Software productions (TNSP)
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5 *
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6 * Please read file 'COPYING' for information on license and distribution.
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7 */
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8 #include "th_regex.h"
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9
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10
635
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11 #ifdef TH_EXPERIMENTAL_REGEX_DEBUG
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12 th_ioctx *th_dbg_fh = NULL;
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13
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14 # define DBG_RE_PRINT(...) do { \
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15 if (th_dbg_fh != NULL) \
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16 { \
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17 th_regex_dump_indent(th_dbg_fh, level); \
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18 thfprintf(th_dbg_fh, __VA_ARGS__); \
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19 } \
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20 } while (0)
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21 #else
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22 # define DBG_RE_PRINT(...)
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23 #endif
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24
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25
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26 /// @cond
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27 enum
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28 {
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29 TH_RE_MATCH_ONCE,
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30 TH_RE_MATCH_COUNT,
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31 TH_RE_MATCH_ANCHOR_START,
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32 TH_RE_MATCH_ANCHOR_END,
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33 };
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34
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35
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36 enum
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37 {
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38 TH_RE_TYPE_CHAR,
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39 TH_RE_TYPE_STR,
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40 TH_RE_TYPE_ANY_CHAR,
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41 TH_RE_TYPE_LIST,
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42 TH_RE_TYPE_LIST_REVERSE,
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43 TH_RE_TYPE_SUBEXPR,
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44 };
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45
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46
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47 static const char *re_match_modes[] =
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48 {
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49 "ONCE",
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50 "COUNT",
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51 "ANCHOR START",
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52 "ANCHOR END",
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53 };
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54
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55
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56 static const char *re_match_types[] =
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57 {
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58 "CHAR",
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59 "STR",
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60 "ANY",
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61 "LIST",
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62 "LIST REVERSE",
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63 "SUBEXPR",
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64 };
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65
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66
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67 typedef struct
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68 {
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69 int type;
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70 th_char_t start, end;
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71
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72 size_t nchars;
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73 th_char_t *chars;
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74 } th_regex_list_item_t;
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75
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76
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77 typedef struct
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78 {
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79 size_t nitems, itemssize;
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80 th_regex_list_item_t *items;
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81 } th_regex_list_t;
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82
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83
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84 typedef struct
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85 {
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86 int mode, type;
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87 ssize_t repeatMin, repeatMax;
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88
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89 struct {
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90 th_char_t chr;
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91 th_char_t *str;
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92 th_regex_list_t list;
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93
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94 th_regex_t *expr;
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95 } match;
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96 } th_regex_node_t;
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97
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98
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99 typedef struct
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100 {
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101 const th_char_t *pattern;
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102 size_t offs;
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103
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104 th_regex_t *data;
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105
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106 size_t nstack, stacksize;
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107 th_regex_t **stack;
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108
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109 th_char_t *buf;
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110 size_t bufSize, bufPos;
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111
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112 } th_regex_parse_ctx_t;
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114
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115 struct th_regex_t
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116 {
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117 size_t nnodes, nodessize;
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118 th_regex_node_t *nodes;
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119 };
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120
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121 /// @endcond
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122
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123
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124 static void th_regex_node_init(th_regex_node_t *node)
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125 {
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126 memset(node, 0, sizeof(th_regex_node_t));
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127 node->mode = TH_RE_MATCH_ONCE;
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128 }
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130
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131 static int th_regex_strndup(th_char_t **pdst,
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132 const th_char_t *src, const size_t len)
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133 {
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134 if (pdst == NULL)
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135 return THERR_NULLPTR;
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136
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137 if (UINTPTR_MAX / sizeof(th_char_t) < len + 1)
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138 return THERR_BOUNDS;
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139
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140 if ((*pdst = (th_char_t *)
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141 th_malloc((len + 1) * sizeof(th_char_t))) == NULL)
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142 return THERR_MALLOC;
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143
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144 memcpy(*pdst, src, len * sizeof(th_char_t));
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145 (*pdst)[len] = 0;
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146
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147 return THERR_OK;
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148 }
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149
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150
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151 static int th_regex_parse_ctx_get_prev_node(
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152 th_regex_parse_ctx_t *ctx, th_regex_node_t **pnode)
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153 {
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154 if (ctx->data != NULL && ctx->data->nnodes > 0)
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155 {
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156 *pnode = &ctx->data->nodes[ctx->data->nnodes - 1];
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157 return THERR_OK;
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158 }
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159 else
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160 return THERR_INVALID_DATA;
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161 }
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162
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163
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164 static int th_regex_parse_ctx_push(th_regex_parse_ctx_t *ctx)
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165 {
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166 if (ctx->stack == NULL || ctx->nstack + 1 >= ctx->stacksize)
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167 {
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168 ctx->stacksize += 16;
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169
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170 if ((ctx->stack = th_realloc(ctx->stack,
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171 ctx->stacksize * sizeof(th_regex_node_t *))) == NULL)
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172 return THERR_MALLOC;
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173 }
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174
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175 ctx->stack[ctx->nstack] = ctx->data;
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176 ctx->nstack++;
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177 ctx->data = NULL;
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178
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179 return THERR_OK;
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180 }
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diff changeset
181
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182
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183 static int th_regex_parse_ctx_pop(th_regex_parse_ctx_t *ctx, th_regex_t **data)
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184 {
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185 if (ctx->nstack > 0)
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diff changeset
186 {
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187 *data = ctx->data;
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188 ctx->nstack--;
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189 ctx->data = ctx->stack[ctx->nstack];
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190 return THERR_OK;
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191 }
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diff changeset
192 else
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193 return THERR_INVALID_DATA;
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194 }
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diff changeset
195
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196
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197 static int th_regex_parse_ctx_node_commit(th_regex_parse_ctx_t *ctx, th_regex_node_t *node)
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198 {
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199 th_regex_t *data = ctx->data;
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200
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diff changeset
201 if (data == NULL)
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diff changeset
202 {
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diff changeset
203 if ((data = ctx->data = th_malloc0(sizeof(th_regex_t))) == NULL)
605
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204 return THERR_MALLOC;
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diff changeset
205 }
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diff changeset
206
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diff changeset
207 if (data->nodes == NULL || data->nnodes + 1 >= data->nodessize)
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diff changeset
208 {
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209 data->nodessize += 16;
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210 if ((data->nodes = th_realloc(data->nodes,
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diff changeset
211 data->nodessize * sizeof(th_regex_node_t))) == NULL)
605
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212 return THERR_MALLOC;
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diff changeset
213 }
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diff changeset
214
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diff changeset
215 memcpy(&data->nodes[data->nnodes], node, sizeof(th_regex_node_t));
605
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216 data->nnodes++;
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diff changeset
217
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218 return THERR_OK;
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diff changeset
219 }
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parents:
diff changeset
220
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diff changeset
221
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222 static BOOL th_regex_find_next(const th_char_t *str,
605
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diff changeset
223 const size_t start, size_t *offs,
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224 const th_char_t delim)
605
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diff changeset
225 {
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
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diff changeset
226 for (*offs = start; str[*offs] != 0; (*offs)++)
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227 {
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
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parents:
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228 if (str[*offs] == delim)
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229 return TRUE;
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diff changeset
230 }
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231 return FALSE;
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
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parents:
diff changeset
232 }
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diff changeset
233
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diff changeset
234
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diff changeset
235 static BOOL th_regex_parse_ssize_t(const th_char_t *str,
605
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236 ssize_t *value)
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diff changeset
237 {
664
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diff changeset
238 th_char_t ch;
605
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diff changeset
239 BOOL neg;
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diff changeset
240
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Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
241 if (*str == '-')
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
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parents:
diff changeset
242 {
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
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diff changeset
243 str++;
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244 neg = TRUE;
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
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parents:
diff changeset
245 }
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
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parents:
diff changeset
246 else
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
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247 neg = FALSE;
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diff changeset
248
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249 // Is the value negative?
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diff changeset
250 while ((ch = *str++))
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
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parents:
diff changeset
251 {
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
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parents:
diff changeset
252 if (ch >= '0' && ch <= '9')
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diff changeset
253 {
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
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254 *value *= 10;
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255 *value += ch - '0';
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diff changeset
256 }
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diff changeset
257 else
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diff changeset
258 return FALSE;
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
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diff changeset
259 }
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diff changeset
260
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Matti Hamalainen <ccr@tnsp.org>
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diff changeset
261 if (neg)
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262 *value = -(*value);
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263
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diff changeset
264 return TRUE;
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
265 }
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parents:
diff changeset
266
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diff changeset
267
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diff changeset
268 static void th_regex_list_item_init(th_regex_list_item_t *item)
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269 {
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diff changeset
270 memset(item, 0, sizeof(th_regex_list_item_t));
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271 }
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parents: 638
diff changeset
272
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diff changeset
273
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diff changeset
274 static int th_regex_list_add_item(th_regex_list_t *list, th_regex_list_item_t *item)
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275 {
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parents: 638
diff changeset
276 if (list->items == NULL || list->nitems + 1 >= list->itemssize)
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parents: 638
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277 {
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parents: 638
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278 list->itemssize += 16;
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parents: 638
diff changeset
279
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
280 if ((list->items = th_realloc(list->items,
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
281 list->itemssize * sizeof(th_regex_list_item_t))) == NULL)
639
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
282 return THERR_MALLOC;
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
283 }
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
284
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
285 memcpy(&list->items[list->nitems], item, sizeof(th_regex_list_item_t));
639
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
286 list->nitems++;
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
287
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
288 return THERR_OK;
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
289 }
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
290
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
291
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
292 static void th_regex_list_free(th_regex_list_t *list)
639
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
293 {
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
294 if (list != NULL)
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
295 {
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
296 for (size_t n = 0; n < list->nitems; n++)
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
297 {
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
298 th_free(list->items[n].chars);
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
299 }
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
300 th_free(list->items);
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
301 }
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
302 }
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
303
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
304
664
c5aa9ada1051 s/th_regex_char_t/th_char_t/g
Matti Hamalainen <ccr@tnsp.org>
parents: 657
diff changeset
305 static int th_regex_parse_list(const th_char_t *str,
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
306 const size_t slen, th_regex_list_t *list)
639
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
307 {
664
c5aa9ada1051 s/th_regex_char_t/th_char_t/g
Matti Hamalainen <ccr@tnsp.org>
parents: 657
diff changeset
308 th_char_t *tmp = NULL;
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
309 th_regex_list_item_t item;
639
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
310 int res;
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
311
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
312 if ((res = th_regex_strndup(&tmp, str, slen)) != THERR_OK)
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
313 goto out;
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
314
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
315 // Handle ranges like [A-Z]
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
316 for (size_t offs = 0; offs < slen; offs++)
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
317 {
664
c5aa9ada1051 s/th_regex_char_t/th_char_t/g
Matti Hamalainen <ccr@tnsp.org>
parents: 657
diff changeset
318 th_char_t
639
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
319 *prev = (offs > 0) ? tmp + offs - 1 : NULL,
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
320 *curr = tmp + offs,
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
321 *next = (offs + 1 < slen) ? tmp + offs + 1 : NULL;
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
322
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
323 if (*curr == '-')
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
324 {
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
325 if (prev != NULL && next != NULL)
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
326 {
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
327 // Range
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
328 th_regex_list_item_init(&item);
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
329 item.type = 1;
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
330 item.start = *prev;
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
331 item.end = *next;
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
332
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
333 if (item.start >= item.end)
639
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
334 {
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
335 res = THERR_INVALID_DATA;
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
336 goto out;
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
337 }
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
338
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
339 *curr = *prev = *next = 0;
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
340
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
341 if ((res = th_regex_list_add_item(list, &item)) != THERR_OK)
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
342 goto out;
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
343 }
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
344 else
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
345 if (next != NULL)
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
346 {
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
347 res = THERR_INVALID_DATA;
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
348 goto out;
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
349 }
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
350 }
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
351 }
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
352
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
353 // Count number of remaining characters
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
354 th_regex_list_item_init(&item);
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
355 item.type = 0;
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
356 item.nchars = 0;
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
357
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
358 for (size_t offs = 0; offs < slen; offs++)
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
359 {
664
c5aa9ada1051 s/th_regex_char_t/th_char_t/g
Matti Hamalainen <ccr@tnsp.org>
parents: 657
diff changeset
360 th_char_t curr = tmp[offs];
639
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
361 if (curr != 0)
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
362 item.nchars++;
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
363 }
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
364
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
365 if (item.nchars > 0)
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
366 {
664
c5aa9ada1051 s/th_regex_char_t/th_char_t/g
Matti Hamalainen <ccr@tnsp.org>
parents: 657
diff changeset
367 if ((item.chars = th_malloc(sizeof(th_char_t) * item.nchars)) == NULL)
639
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
368 {
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
369 res = THERR_MALLOC;
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
370 goto out;
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
371 }
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
372
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
373 for (size_t offs = 0, n = 0; offs < slen; offs++)
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
374 {
664
c5aa9ada1051 s/th_regex_char_t/th_char_t/g
Matti Hamalainen <ccr@tnsp.org>
parents: 657
diff changeset
375 th_char_t curr = tmp[offs];
639
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
376 if (curr != 0)
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
377 {
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
378 item.chars[n] = curr;
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
379 n++;
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
380 }
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
381 }
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
382
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
383 if ((res = th_regex_list_add_item(list, &item)) != THERR_OK)
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
384 {
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
385 th_free(item.chars);
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
386 goto out;
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
387 }
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
388 }
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
389
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
390 out:
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
391 th_free(tmp);
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
392 return res;
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
393 }
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
394
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
395
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
396 static int th_regex_parse_ctx_node_commit_strchr_do(th_regex_parse_ctx_t *ctx,
664
c5aa9ada1051 s/th_regex_char_t/th_char_t/g
Matti Hamalainen <ccr@tnsp.org>
parents: 657
diff changeset
397 const th_char_t *buf, const size_t bufLen)
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
398 {
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
399 th_regex_node_t node;
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
400 th_regex_node_init(&node);
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
401
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
402 if (bufLen > 1)
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
403 {
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
404 int res;
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
405 node.type = TH_RE_TYPE_STR;
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
406 if ((res = th_regex_strndup(&node.match.str, buf, bufLen)) != THERR_OK)
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
407 return res;
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
408 }
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
409 else
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
410 {
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
411 node.type = TH_RE_TYPE_CHAR;
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
412 node.match.chr = buf[0];
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
413 }
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
414
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
415 return th_regex_parse_ctx_node_commit(ctx, &node);
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
416 }
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
417
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
418
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
419 static int th_regex_parse_ctx_node_commit_strchr(th_regex_parse_ctx_t *ctx, const BOOL split)
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
420 {
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
421 int res = THERR_OK;;
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
422
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
423 if (ctx->bufPos > 0)
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
424 {
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
425 if (ctx->bufPos > 1 && split)
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
426 {
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
427 if ((res = th_regex_parse_ctx_node_commit_strchr_do(ctx, ctx->buf, ctx->bufPos - 1)) != THERR_OK)
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
428 return res;
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
429
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
430 res = th_regex_parse_ctx_node_commit_strchr_do(ctx, ctx->buf + ctx->bufPos - 1, 1);
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
431 }
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
432 else
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
433 {
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
434 res = th_regex_parse_ctx_node_commit_strchr_do(ctx, ctx->buf, ctx->bufPos);
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
435 }
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
436 ctx->bufPos = 0;
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
437 }
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
438
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
439 return res;
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
440 }
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
441
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
442
655
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
443 /**
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
444 * Parse given regular expression @p pattern string into compiled/tokenized
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
445 * form as @c th_regex_t structures. Returns @c THERR_OK if successful,
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
446 * or other @c THERR_* return value if not. In either case, the @p pexpr
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
447 * may have been allocated and must be freed via th_regex_free().
657
253a341216b7 Doxygen fixes.
Matti Hamalainen <ccr@tnsp.org>
parents: 655
diff changeset
448 * @param[in,out] pexpr pointer to a pointer of @c th_regex_t structures to be
655
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
449 * @param[in] pattern regular expression pattern string
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
450 * @returns @c THERR_* return value indicating success or failure
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
451 */
664
c5aa9ada1051 s/th_regex_char_t/th_char_t/g
Matti Hamalainen <ccr@tnsp.org>
parents: 657
diff changeset
452 int th_regex_compile(th_regex_t **pexpr, const th_char_t *pattern)
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
453 {
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
454 int res = THERR_OK;
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
455 th_regex_parse_ctx_t ctx;
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
456 th_regex_node_t node, *pnode;
664
c5aa9ada1051 s/th_regex_char_t/th_char_t/g
Matti Hamalainen <ccr@tnsp.org>
parents: 657
diff changeset
457 th_char_t *tmp = NULL;
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
458 size_t start;
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
459
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
460 // Check pointers
611
d895b0fd6ad6 Combine code from th_regex_compile() to th_regex_compile_do().
Matti Hamalainen <ccr@tnsp.org>
parents: 610
diff changeset
461 if (pexpr == NULL || pattern == NULL)
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
462 {
611
d895b0fd6ad6 Combine code from th_regex_compile() to th_regex_compile_do().
Matti Hamalainen <ccr@tnsp.org>
parents: 610
diff changeset
463 res = THERR_NULLPTR;
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
464 goto out;
611
d895b0fd6ad6 Combine code from th_regex_compile() to th_regex_compile_do().
Matti Hamalainen <ccr@tnsp.org>
parents: 610
diff changeset
465 }
d895b0fd6ad6 Combine code from th_regex_compile() to th_regex_compile_do().
Matti Hamalainen <ccr@tnsp.org>
parents: 610
diff changeset
466
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
467 // Initialize parsing context
611
d895b0fd6ad6 Combine code from th_regex_compile() to th_regex_compile_do().
Matti Hamalainen <ccr@tnsp.org>
parents: 610
diff changeset
468 memset(&ctx, 0, sizeof(ctx));
d895b0fd6ad6 Combine code from th_regex_compile() to th_regex_compile_do().
Matti Hamalainen <ccr@tnsp.org>
parents: 610
diff changeset
469 ctx.pattern = pattern;
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
470 ctx.bufSize = 256;
611
d895b0fd6ad6 Combine code from th_regex_compile() to th_regex_compile_do().
Matti Hamalainen <ccr@tnsp.org>
parents: 610
diff changeset
471
664
c5aa9ada1051 s/th_regex_char_t/th_char_t/g
Matti Hamalainen <ccr@tnsp.org>
parents: 657
diff changeset
472 if ((ctx.buf = th_malloc(ctx.bufSize * sizeof(th_char_t))) == NULL)
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
473 {
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
474 res = THERR_MALLOC;
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
475 goto out;
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
476 }
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
477
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
478 // Start parsing the pattern
611
d895b0fd6ad6 Combine code from th_regex_compile() to th_regex_compile_do().
Matti Hamalainen <ccr@tnsp.org>
parents: 610
diff changeset
479 for (; ctx.pattern[ctx.offs] != 0; ctx.offs++)
d895b0fd6ad6 Combine code from th_regex_compile() to th_regex_compile_do().
Matti Hamalainen <ccr@tnsp.org>
parents: 610
diff changeset
480 {
664
c5aa9ada1051 s/th_regex_char_t/th_char_t/g
Matti Hamalainen <ccr@tnsp.org>
parents: 657
diff changeset
481 th_char_t cch = ctx.pattern[ctx.offs];
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
482
613
2e3b81ae8c8a More work on regexes.
Matti Hamalainen <ccr@tnsp.org>
parents: 612
diff changeset
483 switch (cch)
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
484 {
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
485 case '?':
613
2e3b81ae8c8a More work on regexes.
Matti Hamalainen <ccr@tnsp.org>
parents: 612
diff changeset
486 case '*':
2e3b81ae8c8a More work on regexes.
Matti Hamalainen <ccr@tnsp.org>
parents: 612
diff changeset
487 case '+':
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
488 if ((res = th_regex_parse_ctx_node_commit_strchr(&ctx, TRUE)) != THERR_OK)
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
489 goto out;
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
490
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
491 if ((res = th_regex_parse_ctx_get_prev_node(&ctx, &pnode)) != THERR_OK)
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
492 goto out;
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
493
613
2e3b81ae8c8a More work on regexes.
Matti Hamalainen <ccr@tnsp.org>
parents: 612
diff changeset
494 if (cch == '?')
2e3b81ae8c8a More work on regexes.
Matti Hamalainen <ccr@tnsp.org>
parents: 612
diff changeset
495 {
643
a2bf1ea05b05 Cleanups.
Matti Hamalainen <ccr@tnsp.org>
parents: 642
diff changeset
496 // Previous token is optional (repeat 0-1 times) (non-greedy matching)
a2bf1ea05b05 Cleanups.
Matti Hamalainen <ccr@tnsp.org>
parents: 642
diff changeset
497 pnode->mode = TH_RE_MATCH_COUNT;
a2bf1ea05b05 Cleanups.
Matti Hamalainen <ccr@tnsp.org>
parents: 642
diff changeset
498 pnode->repeatMin = 0;
a2bf1ea05b05 Cleanups.
Matti Hamalainen <ccr@tnsp.org>
parents: 642
diff changeset
499 pnode->repeatMax = 1;
613
2e3b81ae8c8a More work on regexes.
Matti Hamalainen <ccr@tnsp.org>
parents: 612
diff changeset
500 }
2e3b81ae8c8a More work on regexes.
Matti Hamalainen <ccr@tnsp.org>
parents: 612
diff changeset
501 else
2e3b81ae8c8a More work on regexes.
Matti Hamalainen <ccr@tnsp.org>
parents: 612
diff changeset
502 {
641
9a1ed82abefd Fix parsing of +? and *?.
Matti Hamalainen <ccr@tnsp.org>
parents: 640
diff changeset
503 // Check if previous was a count ("**", "*+", etc.)
643
a2bf1ea05b05 Cleanups.
Matti Hamalainen <ccr@tnsp.org>
parents: 642
diff changeset
504 if (pnode->mode == TH_RE_MATCH_COUNT)
613
2e3b81ae8c8a More work on regexes.
Matti Hamalainen <ccr@tnsp.org>
parents: 612
diff changeset
505 {
2e3b81ae8c8a More work on regexes.
Matti Hamalainen <ccr@tnsp.org>
parents: 612
diff changeset
506 res = THERR_INVALID_DATA;
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
507 goto out;
613
2e3b81ae8c8a More work on regexes.
Matti Hamalainen <ccr@tnsp.org>
parents: 612
diff changeset
508 }
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
509
643
a2bf1ea05b05 Cleanups.
Matti Hamalainen <ccr@tnsp.org>
parents: 642
diff changeset
510 pnode->mode = TH_RE_MATCH_COUNT;
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
511
613
2e3b81ae8c8a More work on regexes.
Matti Hamalainen <ccr@tnsp.org>
parents: 612
diff changeset
512 if (cch == '*')
2e3b81ae8c8a More work on regexes.
Matti Hamalainen <ccr@tnsp.org>
parents: 612
diff changeset
513 {
2e3b81ae8c8a More work on regexes.
Matti Hamalainen <ccr@tnsp.org>
parents: 612
diff changeset
514 // Previous token can repeat 0 or more times
2e3b81ae8c8a More work on regexes.
Matti Hamalainen <ccr@tnsp.org>
parents: 612
diff changeset
515 pnode->repeatMin = 0;
2e3b81ae8c8a More work on regexes.
Matti Hamalainen <ccr@tnsp.org>
parents: 612
diff changeset
516 pnode->repeatMax = -1;
2e3b81ae8c8a More work on regexes.
Matti Hamalainen <ccr@tnsp.org>
parents: 612
diff changeset
517 }
2e3b81ae8c8a More work on regexes.
Matti Hamalainen <ccr@tnsp.org>
parents: 612
diff changeset
518 else
2e3b81ae8c8a More work on regexes.
Matti Hamalainen <ccr@tnsp.org>
parents: 612
diff changeset
519 {
2e3b81ae8c8a More work on regexes.
Matti Hamalainen <ccr@tnsp.org>
parents: 612
diff changeset
520 // Previous token must repeat 1 or more times
2e3b81ae8c8a More work on regexes.
Matti Hamalainen <ccr@tnsp.org>
parents: 612
diff changeset
521 pnode->repeatMin = 1;
2e3b81ae8c8a More work on regexes.
Matti Hamalainen <ccr@tnsp.org>
parents: 612
diff changeset
522 pnode->repeatMax = -1;
2e3b81ae8c8a More work on regexes.
Matti Hamalainen <ccr@tnsp.org>
parents: 612
diff changeset
523 }
2e3b81ae8c8a More work on regexes.
Matti Hamalainen <ccr@tnsp.org>
parents: 612
diff changeset
524 }
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
525 break;
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
526
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
527 case '{':
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
528 if ((res = th_regex_parse_ctx_node_commit_strchr(&ctx, TRUE)) != THERR_OK)
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
529 goto out;
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
530
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
531 // {n} | {min,max}
611
d895b0fd6ad6 Combine code from th_regex_compile() to th_regex_compile_do().
Matti Hamalainen <ccr@tnsp.org>
parents: 610
diff changeset
532 start = ctx.offs + 1;
d895b0fd6ad6 Combine code from th_regex_compile() to th_regex_compile_do().
Matti Hamalainen <ccr@tnsp.org>
parents: 610
diff changeset
533 if (!th_regex_find_next(ctx.pattern, start, &ctx.offs, '}'))
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
534 {
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
535 // End not found
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
536 res = THERR_INVALID_DATA;
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
537 goto out;
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
538 }
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
539
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
540 th_free(tmp);
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
541
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
542 if ((res = th_regex_parse_ctx_get_prev_node(&ctx, &pnode)) != THERR_OK ||
611
d895b0fd6ad6 Combine code from th_regex_compile() to th_regex_compile_do().
Matti Hamalainen <ccr@tnsp.org>
parents: 610
diff changeset
543 (res = th_regex_strndup(&tmp, ctx.pattern + start,
d895b0fd6ad6 Combine code from th_regex_compile() to th_regex_compile_do().
Matti Hamalainen <ccr@tnsp.org>
parents: 610
diff changeset
544 ctx.offs - start)) != THERR_OK)
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
545 goto out;
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
546
643
a2bf1ea05b05 Cleanups.
Matti Hamalainen <ccr@tnsp.org>
parents: 642
diff changeset
547 pnode->mode = TH_RE_MATCH_COUNT;
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
548
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
549 if (th_regex_find_next(tmp, 0, &start, ','))
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
550 {
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
551 tmp[start] = 0;
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
552 if (!th_regex_parse_ssize_t(tmp, &pnode->repeatMin) ||
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
553 !th_regex_parse_ssize_t(tmp + start + 1, &pnode->repeatMax))
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
554 {
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
555 res = THERR_INVALID_DATA;
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
556 goto out;
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
557 }
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
558 }
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
559 else
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
560 {
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
561 if (!th_regex_parse_ssize_t(tmp, &pnode->repeatMin))
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
562 {
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
563 res = THERR_INVALID_DATA;
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
564 goto out;
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
565 }
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
566 pnode->repeatMax = pnode->repeatMin;
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
567 }
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
568
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
569 if (pnode->repeatMin < 0 || pnode->repeatMax < 1 ||
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
570 pnode->repeatMax < pnode->repeatMin)
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
571 {
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
572 // Invalid repeat counts
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
573 res = THERR_INVALID_DATA;
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
574 goto out;
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
575 }
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
576 break;
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
577
648
91c43398c6fc Twiddle.
Matti Hamalainen <ccr@tnsp.org>
parents: 647
diff changeset
578 /*
91c43398c6fc Twiddle.
Matti Hamalainen <ccr@tnsp.org>
parents: 647
diff changeset
579 case '|':
91c43398c6fc Twiddle.
Matti Hamalainen <ccr@tnsp.org>
parents: 647
diff changeset
580 if ((res = th_regex_parse_ctx_node_commit_strchr(&ctx, FALSE)) != THERR_OK)
91c43398c6fc Twiddle.
Matti Hamalainen <ccr@tnsp.org>
parents: 647
diff changeset
581 goto out;
91c43398c6fc Twiddle.
Matti Hamalainen <ccr@tnsp.org>
parents: 647
diff changeset
582
91c43398c6fc Twiddle.
Matti Hamalainen <ccr@tnsp.org>
parents: 647
diff changeset
583 // Alt pattern .. how to handle these?
91c43398c6fc Twiddle.
Matti Hamalainen <ccr@tnsp.org>
parents: 647
diff changeset
584 break;
91c43398c6fc Twiddle.
Matti Hamalainen <ccr@tnsp.org>
parents: 647
diff changeset
585 */
91c43398c6fc Twiddle.
Matti Hamalainen <ccr@tnsp.org>
parents: 647
diff changeset
586
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
587 case '(':
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
588 if ((res = th_regex_parse_ctx_node_commit_strchr(&ctx, FALSE)) != THERR_OK)
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
589 goto out;
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
590
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
591 // Start of subpattern
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
592 if ((res = th_regex_parse_ctx_push(&ctx)) != THERR_OK)
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
593 goto out;
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
594 break;
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
595
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
596 case ')':
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
597 if ((res = th_regex_parse_ctx_node_commit_strchr(&ctx, FALSE)) != THERR_OK)
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
598 goto out;
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
599
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
600 // End of subpattern
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
601 th_regex_node_init(&node);
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
602 node.type = TH_RE_TYPE_SUBEXPR;
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
603
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
604 if ((res = th_regex_parse_ctx_pop(&ctx, &node.match.expr)) != THERR_OK ||
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
605 (res = th_regex_parse_ctx_node_commit(&ctx, &node)) != THERR_OK)
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
606 goto out;
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
607 break;
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
608
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
609 case '^':
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
610 if ((res = th_regex_parse_ctx_node_commit_strchr(&ctx, FALSE)) != THERR_OK)
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
611 goto out;
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
612
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
613 // Start of line anchor
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
614 th_regex_node_init(&node);
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
615 node.mode = TH_RE_MATCH_ANCHOR_START;
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
616
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
617 if ((res = th_regex_parse_ctx_node_commit(&ctx, &node)) != THERR_OK)
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
618 goto out;
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
619 break;
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
620
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
621 case '$':
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
622 if ((res = th_regex_parse_ctx_node_commit_strchr(&ctx, FALSE)) != THERR_OK)
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
623 goto out;
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
624
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
625 // End of line anchor
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
626 th_regex_node_init(&node);
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
627 node.mode = TH_RE_MATCH_ANCHOR_END;
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
628
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
629 if ((res = th_regex_parse_ctx_node_commit(&ctx, &node)) != THERR_OK)
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
630 goto out;
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
631 break;
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
632
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
633 case '[':
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
634 if ((res = th_regex_parse_ctx_node_commit_strchr(&ctx, FALSE)) != THERR_OK)
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
635 goto out;
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
636
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
637 // Start of char list
611
d895b0fd6ad6 Combine code from th_regex_compile() to th_regex_compile_do().
Matti Hamalainen <ccr@tnsp.org>
parents: 610
diff changeset
638 start = ctx.offs + 1;
d895b0fd6ad6 Combine code from th_regex_compile() to th_regex_compile_do().
Matti Hamalainen <ccr@tnsp.org>
parents: 610
diff changeset
639 if (!th_regex_find_next(ctx.pattern, start, &ctx.offs, ']') ||
d895b0fd6ad6 Combine code from th_regex_compile() to th_regex_compile_do().
Matti Hamalainen <ccr@tnsp.org>
parents: 610
diff changeset
640 ctx.offs == start)
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
641 {
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
642 res = THERR_INVALID_DATA;
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
643 goto out;
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
644 }
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
645
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
646 th_regex_node_init(&node);
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
647 if (ctx.pattern[start] == '^')
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
648 {
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
649 node.type = TH_RE_TYPE_LIST_REVERSE;
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
650 start++;
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
651 }
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
652 else
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
653 node.type = TH_RE_TYPE_LIST;
638
c4bca120bfb0 Cleanups.
Matti Hamalainen <ccr@tnsp.org>
parents: 635
diff changeset
654
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
655 if ((res = th_regex_parse_list(ctx.pattern + start,
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
656 ctx.offs - start, &node.match.list)) != THERR_OK ||
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
657 (res = th_regex_parse_ctx_node_commit(&ctx, &node)) != THERR_OK)
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
658 goto out;
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
659 break;
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
660
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
661 case '.':
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
662 if ((res = th_regex_parse_ctx_node_commit_strchr(&ctx, FALSE)) != THERR_OK)
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
663 goto out;
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
664
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
665 // Any single character matches
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
666 th_regex_node_init(&node);
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
667 node.type = TH_RE_TYPE_ANY_CHAR;
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
668
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
669 if ((res = th_regex_parse_ctx_node_commit(&ctx, &node)) != THERR_OK)
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
670 goto out;
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
671 break;
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
672
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
673 case '\\':
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
674 // Literal escape
611
d895b0fd6ad6 Combine code from th_regex_compile() to th_regex_compile_do().
Matti Hamalainen <ccr@tnsp.org>
parents: 610
diff changeset
675 ctx.offs++;
d895b0fd6ad6 Combine code from th_regex_compile() to th_regex_compile_do().
Matti Hamalainen <ccr@tnsp.org>
parents: 610
diff changeset
676 if (ctx.pattern[ctx.offs] == 0)
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
677 {
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
678 // End of pattern, error
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
679 res = THERR_INVALID_DATA;
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
680 goto out;
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
681 }
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
682 // fall-through
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
683
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
684 default:
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
685 // Given character must match
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
686 if (ctx.bufPos < ctx.bufSize)
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
687 ctx.buf[ctx.bufPos++] = ctx.pattern[ctx.offs];
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
688 else
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
689 if ((res = th_regex_parse_ctx_node_commit_strchr(&ctx, FALSE)) != THERR_OK)
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
690 goto out;
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
691 break;
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
692 }
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
693 }
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
694
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
695 // Commit last string/char if any
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
696 if ((res = th_regex_parse_ctx_node_commit_strchr(&ctx, FALSE)) != THERR_OK)
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
697 goto out;
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
698
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
699 // Create root node
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
700 th_regex_node_init(&node);
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
701 node.type = TH_RE_TYPE_SUBEXPR;
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
702 node.match.expr = ctx.data;
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
703 ctx.data = NULL;
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
704
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
705 if ((res = th_regex_parse_ctx_node_commit(&ctx, &node)) != THERR_OK)
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
706 goto out;
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
707
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
708 out:
611
d895b0fd6ad6 Combine code from th_regex_compile() to th_regex_compile_do().
Matti Hamalainen <ccr@tnsp.org>
parents: 610
diff changeset
709 *pexpr = ctx.data;
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
710
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
711 // Free temporary buffers
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
712 th_free(tmp);
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
713 th_free(ctx.buf);
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
714 return res;
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
715 }
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
716
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
717
655
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
718 /**
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
719 * Deallocate the given regular expression structure @p expr.
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
720 * All associated data will be freed, though pointers may not
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
721 * be NULLed.
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
722 *
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
723 * @param[in] expr structure to be deallocated
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
724 */
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
725 void th_regex_free(th_regex_t *expr)
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
726 {
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
727 if (expr != NULL)
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
728 {
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
729 for (size_t nnode = 0; nnode < expr->nnodes; nnode++)
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
730 {
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
731 th_regex_node_t *node = &expr->nodes[nnode];
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
732
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
733 th_regex_free(node->match.expr);
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
734 th_regex_list_free(&node->match.list);
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
735 }
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
736
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
737 th_free(expr->nodes);
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
738 }
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
739 }
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
740
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
741
651
18fe45e61b2b Moar re-work.
Matti Hamalainen <ccr@tnsp.org>
parents: 649
diff changeset
742 static void th_regex_dump_indent(th_ioctx *fh, const int level)
647
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
743 {
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
744 for (int indent = 0; indent < level; indent++)
651
18fe45e61b2b Moar re-work.
Matti Hamalainen <ccr@tnsp.org>
parents: 649
diff changeset
745 thfputs(" ", fh);
647
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
746 }
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
747
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
748
651
18fe45e61b2b Moar re-work.
Matti Hamalainen <ccr@tnsp.org>
parents: 649
diff changeset
749 static void th_regex_dump_node(th_ioctx *fh, const th_regex_node_t *node)
647
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
750 {
651
18fe45e61b2b Moar re-work.
Matti Hamalainen <ccr@tnsp.org>
parents: 649
diff changeset
751 thfprintf(fh,
647
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
752 "%s %s ",
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
753 re_match_modes[node->mode],
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
754 re_match_types[node->type]);
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
755
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
756 if (node->mode == TH_RE_MATCH_COUNT)
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
757 {
651
18fe45e61b2b Moar re-work.
Matti Hamalainen <ccr@tnsp.org>
parents: 649
diff changeset
758 thfprintf(fh, "min=%" PRId_SSIZE_T ", max=%" PRId_SSIZE_T " : ",
647
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
759 node->repeatMin, node->repeatMax);
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
760 }
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
761
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
762 switch (node->type)
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
763 {
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
764 case TH_RE_TYPE_CHAR:
651
18fe45e61b2b Moar re-work.
Matti Hamalainen <ccr@tnsp.org>
parents: 649
diff changeset
765 thfprintf(fh, "'%c'", node->match.chr);
647
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
766 break;
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
767
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
768 case TH_RE_TYPE_STR:
651
18fe45e61b2b Moar re-work.
Matti Hamalainen <ccr@tnsp.org>
parents: 649
diff changeset
769 thfprintf(fh, "\"%s\"", node->match.str);
647
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
770 break;
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
771
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
772 case TH_RE_TYPE_ANY_CHAR:
651
18fe45e61b2b Moar re-work.
Matti Hamalainen <ccr@tnsp.org>
parents: 649
diff changeset
773 thfprintf(fh, ".");
647
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
774 break;
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
775
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
776 case TH_RE_TYPE_LIST:
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
777 case TH_RE_TYPE_LIST_REVERSE:
651
18fe45e61b2b Moar re-work.
Matti Hamalainen <ccr@tnsp.org>
parents: 649
diff changeset
778 thfputs("[ ", fh);
647
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
779 for (size_t n = 0; n < node->match.list.nitems; n++)
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
780 {
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
781 const th_regex_list_item_t *li = &node->match.list.items[n];
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
782 if (li->type)
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
783 {
651
18fe45e61b2b Moar re-work.
Matti Hamalainen <ccr@tnsp.org>
parents: 649
diff changeset
784 thfprintf(fh, "'%c-%c' ", li->start, li->end);
647
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
785 }
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
786 else
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
787 {
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
788 for (size_t i = 0; i < li->nchars; i++)
651
18fe45e61b2b Moar re-work.
Matti Hamalainen <ccr@tnsp.org>
parents: 649
diff changeset
789 thfprintf(fh, "'%c' ", li->chars[i]);
647
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
790 }
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
791 }
651
18fe45e61b2b Moar re-work.
Matti Hamalainen <ccr@tnsp.org>
parents: 649
diff changeset
792 thfputs("]", fh);
647
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
793 break;
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
794 }
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
795 }
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
796
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
797
655
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
798 /**
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
799 * Print out the contents of given regular expression structure @p expr
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
800 * in "human-readable" format to specified @c th_ioctx context. Typically
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
801 * useful for debugging purposes only.
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
802 *
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
803 * @param[in,out] fh th_ioctx handle to be used for output, must be writable.
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
804 * @param[in] level starting whitespace indentation level
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
805 * @param[in] expr regular expression structure to be "dumped"
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
806 */
651
18fe45e61b2b Moar re-work.
Matti Hamalainen <ccr@tnsp.org>
parents: 649
diff changeset
807 void th_regex_dump(th_ioctx *fh, const int level, const th_regex_t *expr)
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
808 {
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
809 if (expr != NULL)
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
810 {
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
811 for (size_t nnode = 0; nnode < expr->nnodes; nnode++)
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
812 {
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
813 th_regex_node_t *node = &expr->nodes[nnode];
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
814
647
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
815 th_regex_dump_indent(fh, level);
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
816
651
18fe45e61b2b Moar re-work.
Matti Hamalainen <ccr@tnsp.org>
parents: 649
diff changeset
817 thfprintf(fh,
647
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
818 "[%" PRIu_SIZE_T "/%" PRIu_SIZE_T "] ",
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
819 nnode + 1, expr->nnodes);
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
820
647
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
821 th_regex_dump_node(fh, node);
651
18fe45e61b2b Moar re-work.
Matti Hamalainen <ccr@tnsp.org>
parents: 649
diff changeset
822 thfputs("\n", fh);
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
823
647
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
824 if (node->type == TH_RE_TYPE_SUBEXPR)
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
825 th_regex_dump(fh, level + 1, node->match.expr);
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
826 }
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
827 }
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
828 }
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
829
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
830
664
c5aa9ada1051 s/th_regex_char_t/th_char_t/g
Matti Hamalainen <ccr@tnsp.org>
parents: 657
diff changeset
831 static BOOL th_regex_match_list(const th_regex_list_t *list, const th_char_t cch)
639
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
832 {
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
833 // Could be optimized, perhaps .. sort match.chars, binary search etc?
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
834 for (size_t nitem = 0; nitem < list->nitems; nitem++)
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
835 {
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
836 const th_regex_list_item_t *item = &list->items[nitem];
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
837
639
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
838 if (item->type == 0)
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
839 {
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
840 for (size_t n = 0; n < item->nchars; n++)
649
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
841 {
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
842 if (item->chars[n] == cch)
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
843 return TRUE;
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
844 }
639
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
845 }
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
846 else
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
847 {
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
848 if (cch >= item->start && cch <= item->end)
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
849 return TRUE;
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
850 }
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
851 }
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
852
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
853 return FALSE;
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
854 }
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
855
8c957ad9d4c3 Some more work on regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 638
diff changeset
856
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
857 static BOOL th_regex_match_expr(
664
c5aa9ada1051 s/th_regex_char_t/th_char_t/g
Matti Hamalainen <ccr@tnsp.org>
parents: 657
diff changeset
858 const th_char_t *haystack,
649
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
859 size_t *offs,
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
860 const th_regex_t *expr,
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
861 const size_t startnode,
647
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
862 const int flags,
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
863 const int level
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
864 );
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
865
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
866
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
867 static BOOL th_regex_match_one(
664
c5aa9ada1051 s/th_regex_char_t/th_char_t/g
Matti Hamalainen <ccr@tnsp.org>
parents: 657
diff changeset
868 const th_char_t *haystack,
649
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
869 size_t *offs,
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
870 const th_regex_node_t *node,
647
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
871 const int flags,
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
872 const int level
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
873 )
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
874 {
664
c5aa9ada1051 s/th_regex_char_t/th_char_t/g
Matti Hamalainen <ccr@tnsp.org>
parents: 657
diff changeset
875 th_char_t cch;
638
c4bca120bfb0 Cleanups.
Matti Hamalainen <ccr@tnsp.org>
parents: 635
diff changeset
876 BOOL res = FALSE;
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
877
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
878 switch (node->type)
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
879 {
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
880 case TH_RE_TYPE_SUBEXPR:
649
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
881 res = th_regex_match_expr(haystack, offs, node->match.expr, 0, flags, level + 1);
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
882 break;
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
883
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
884 case TH_RE_TYPE_LIST:
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
885 case TH_RE_TYPE_LIST_REVERSE:
649
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
886 if ((cch = haystack[*offs]) == 0)
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
887 res = FALSE;
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
888 else
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
889 {
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
890 res = th_regex_match_list(&node->match.list, cch);
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
891
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
892 if (node->type == TH_RE_TYPE_LIST_REVERSE)
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
893 res = !res;
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
894
649
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
895 (*offs)++;
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
896 }
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
897 break;
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
898
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
899 case TH_RE_TYPE_ANY_CHAR:
649
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
900 if ((cch = haystack[*offs]) == 0)
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
901 res = FALSE;
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
902 else
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
903 {
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
904 res = TRUE;
649
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
905 (*offs)++;
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
906 }
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
907 break;
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
908
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
909 case TH_RE_TYPE_CHAR:
649
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
910 if ((cch = haystack[*offs]) == 0)
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
911 res = FALSE;
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
912 else
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
913 {
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
914 res = (cch == node->match.chr);
649
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
915 (*offs)++;
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
916 }
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
917 break;
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
918
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
919 case TH_RE_TYPE_STR:
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
920 res = TRUE;
664
c5aa9ada1051 s/th_regex_char_t/th_char_t/g
Matti Hamalainen <ccr@tnsp.org>
parents: 657
diff changeset
921 for (th_char_t *str = node->match.str;
648
91c43398c6fc Twiddle.
Matti Hamalainen <ccr@tnsp.org>
parents: 647
diff changeset
922 res && *str != 0;
649
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
923 str++, (*offs)++)
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
924 {
649
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
925 if (haystack[*offs] != *str)
645
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
926 res = FALSE;
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
927 }
b897995101b7 More fiddling and twiddling. Add parsing to string nodes instead of separate character nodes.
Matti Hamalainen <ccr@tnsp.org>
parents: 643
diff changeset
928 break;
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
929 }
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
930
638
c4bca120bfb0 Cleanups.
Matti Hamalainen <ccr@tnsp.org>
parents: 635
diff changeset
931 return res;
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
932 }
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
933
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
934
649
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
935 static BOOL th_regex_match_count(
664
c5aa9ada1051 s/th_regex_char_t/th_char_t/g
Matti Hamalainen <ccr@tnsp.org>
parents: 657
diff changeset
936 const th_char_t *haystack,
649
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
937 size_t *offs,
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
938 const th_regex_t *expr,
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
939 const th_regex_node_t *node,
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
940 size_t *nnode,
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
941 const int flags,
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
942 const int level
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
943 )
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
944 {
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
945 size_t toffs = *offs, noffs;
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
946 BOOL res, match = FALSE;
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
947 ssize_t count = 0;
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
948
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
949 if (node->repeatMin > 0)
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
950 do
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
951 {
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
952 noffs = toffs;
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
953 match = th_regex_match_one(haystack, &toffs, node, flags, level);
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
954 if (match)
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
955 {
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
956 count++;
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
957 }
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
958 else
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
959 toffs = noffs;
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
960
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
961 if (node->repeatMin >= 0 &&
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
962 count >= node->repeatMin &&
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
963 node->repeatMax > 0 &&
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
964 count >= node->repeatMax)
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
965 break;
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
966
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
967 } while (match && toffs > noffs);
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
968
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
969 if (count > 0 || node->repeatMin == 0)
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
970 {
651
18fe45e61b2b Moar re-work.
Matti Hamalainen <ccr@tnsp.org>
parents: 649
diff changeset
971 DBG_RE_PRINT("count=%" PRId_SSIZE_T " \"%s\"\n",
649
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
972 count, haystack + toffs);
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
973
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
974 match = th_regex_match_expr(haystack, &toffs, expr, *nnode + 1, flags, level + 1);
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
975
651
18fe45e61b2b Moar re-work.
Matti Hamalainen <ccr@tnsp.org>
parents: 649
diff changeset
976 DBG_RE_PRINT("rest expr match=%s \"%s\"\n",
649
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
977 match ? "YES" : "NO", haystack + toffs);
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
978 }
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
979
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
980 if (match)
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
981 {
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
982 *offs = toffs;
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
983 *nnode = expr->nnodes;
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
984 }
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
985
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
986 res = match &&
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
987 (
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
988 (node->repeatMax > 0 && count >= node->repeatMax) ||
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
989 (node->repeatMin >= 0 && count >= node->repeatMin)
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
990 );
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
991
651
18fe45e61b2b Moar re-work.
Matti Hamalainen <ccr@tnsp.org>
parents: 649
diff changeset
992 DBG_RE_PRINT("RESULT: match=%s, res=%s\n",
649
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
993 match ? "YES" : "NO", res ? "YES" : "NO");
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
994
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
995 return res;
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
996 }
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
997
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
998
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
999 static BOOL th_regex_match_expr(
664
c5aa9ada1051 s/th_regex_char_t/th_char_t/g
Matti Hamalainen <ccr@tnsp.org>
parents: 657
diff changeset
1000 const th_char_t *haystack,
649
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
1001 size_t *offs,
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
1002 const th_regex_t *expr,
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
1003 const size_t startnode,
647
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
1004 const int flags,
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
1005 const int level
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
1006 )
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1007 {
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
1008 BOOL res = TRUE;
649
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
1009 size_t soffs = *offs;
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
1010
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
1011 for (size_t nnode = startnode; res && nnode < expr->nnodes; nnode++)
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1012 {
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
1013 const th_regex_node_t *node = &expr->nodes[nnode];
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1014
647
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
1015 #ifdef TH_EXPERIMENTAL_REGEX_DEBUG
651
18fe45e61b2b Moar re-work.
Matti Hamalainen <ccr@tnsp.org>
parents: 649
diff changeset
1016 if (th_dbg_fh != NULL)
648
91c43398c6fc Twiddle.
Matti Hamalainen <ccr@tnsp.org>
parents: 647
diff changeset
1017 {
651
18fe45e61b2b Moar re-work.
Matti Hamalainen <ccr@tnsp.org>
parents: 649
diff changeset
1018 th_regex_dump_indent(th_dbg_fh, level);
18fe45e61b2b Moar re-work.
Matti Hamalainen <ccr@tnsp.org>
parents: 649
diff changeset
1019
18fe45e61b2b Moar re-work.
Matti Hamalainen <ccr@tnsp.org>
parents: 649
diff changeset
1020 thfprintf(th_dbg_fh,
648
91c43398c6fc Twiddle.
Matti Hamalainen <ccr@tnsp.org>
parents: 647
diff changeset
1021 "[%" PRIu_SIZE_T "/%" PRIu_SIZE_T "] ",
91c43398c6fc Twiddle.
Matti Hamalainen <ccr@tnsp.org>
parents: 647
diff changeset
1022 nnode + 1, expr->nnodes);
647
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
1023
651
18fe45e61b2b Moar re-work.
Matti Hamalainen <ccr@tnsp.org>
parents: 649
diff changeset
1024 th_regex_dump_node(th_dbg_fh, node);
647
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
1025
651
18fe45e61b2b Moar re-work.
Matti Hamalainen <ccr@tnsp.org>
parents: 649
diff changeset
1026 thfprintf(th_dbg_fh, " <-> \"%s\"\n",
648
91c43398c6fc Twiddle.
Matti Hamalainen <ccr@tnsp.org>
parents: 647
diff changeset
1027 haystack + soffs);
91c43398c6fc Twiddle.
Matti Hamalainen <ccr@tnsp.org>
parents: 647
diff changeset
1028 }
647
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
1029 #endif
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1030
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1031 switch (node->mode)
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1032 {
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1033 case TH_RE_MATCH_ONCE:
647
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
1034 res = th_regex_match_one(haystack, &soffs, node, flags, level);
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1035 break;
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1036
643
a2bf1ea05b05 Cleanups.
Matti Hamalainen <ccr@tnsp.org>
parents: 642
diff changeset
1037 case TH_RE_MATCH_COUNT:
649
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
1038 res = th_regex_match_count(haystack, &soffs, expr, node, &nnode, flags, level);
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1039 break;
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1040
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1041 case TH_RE_MATCH_ANCHOR_START:
643
a2bf1ea05b05 Cleanups.
Matti Hamalainen <ccr@tnsp.org>
parents: 642
diff changeset
1042 res = (soffs == 0);
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1043 break;
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1044
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1045 case TH_RE_MATCH_ANCHOR_END:
643
a2bf1ea05b05 Cleanups.
Matti Hamalainen <ccr@tnsp.org>
parents: 642
diff changeset
1046 res = (haystack[soffs] == 0);
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1047 break;
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1048 }
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1049 }
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1050
643
a2bf1ea05b05 Cleanups.
Matti Hamalainen <ccr@tnsp.org>
parents: 642
diff changeset
1051 if (res)
649
2c9260f5cf44 Tweedle.
Matti Hamalainen <ccr@tnsp.org>
parents: 648
diff changeset
1052 *offs = soffs;
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
1053
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
1054 return res;
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1055 }
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1056
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1057
655
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
1058 /**
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
1059 * Match the specified string @p haystack against specified compiled
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
1060 * regular expression @p expr and return results in optional variables
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
1061 * @p pnmatches for number of matches and/or @p pmatches @c th_regex_match_t
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
1062 * structures for matching sequences information. If @p pmatches is used,
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
1063 * the resulting linked list should be eventually freed via th_regex_free_matches().
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
1064 *
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
1065 * @param[in] expr regular expression structure to be matched
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
1066 * @param[in] haystack string to be matched against
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
1067 * @param[out] pnmatches pointer to variable to be set to number of found matches, or @c NULL if the information is not desired
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
1068 * @param[out] pmatches pointer to a pointer of @c th_regex_match_t structures, or @c NULL if the information is not desired
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
1069 * @param[in] maxmatches maximum number of matches until bailing out, or @c 0 if no limit
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
1070 * @param[in] flags additional flags, see @c TH_REF_*
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
1071 */
664
c5aa9ada1051 s/th_regex_char_t/th_char_t/g
Matti Hamalainen <ccr@tnsp.org>
parents: 657
diff changeset
1072 int th_regex_match(const th_regex_t *expr, const th_char_t *haystack,
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
1073 size_t *pnmatches, th_regex_match_t **pmatches, const size_t maxmatches,
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1074 const int flags)
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1075 {
610
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1076 size_t nmatches = 0;
647
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
1077 int level = 0;
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
1078 (void) flags;
610
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1079
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1080 if (pnmatches != NULL)
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1081 *pnmatches = 0;
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1082
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1083 // Check given pattern and string
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1084 if (expr == NULL || haystack == NULL)
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1085 return THERR_NULLPTR;
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1086
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1087 // Start matching
610
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1088 // XXX NOTE .. lots to think about and to take into account:
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1089 // - anchored and unanchored expressions
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1090 // - how to check if the expression has consumed all possibilities?
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1091 // ..
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1092 for (size_t soffs = 0; haystack[soffs] != 0; )
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1093 {
610
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1094 size_t coffs = soffs;
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1095
647
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
1096 if (th_regex_match_expr(haystack, &coffs, expr, 0, flags, level))
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1097 {
612
cc9ec51b4875 Add some comments and debug messages.
Matti Hamalainen <ccr@tnsp.org>
parents: 611
diff changeset
1098 // A match was found, increase count
610
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1099 nmatches++;
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1100
612
cc9ec51b4875 Add some comments and debug messages.
Matti Hamalainen <ccr@tnsp.org>
parents: 611
diff changeset
1101 // Deliver to caller if required
610
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1102 if (pnmatches != NULL)
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1103 *pnmatches = nmatches;
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1104
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1105 if (pmatches != NULL)
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1106 {
647
1e7e3f96632e And some more work.
Matti Hamalainen <ccr@tnsp.org>
parents: 645
diff changeset
1107 // Add the match region to the list
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
1108 th_regex_match_t *match = th_malloc0(sizeof(th_regex_match_t));
610
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1109 if (match == NULL)
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1110 return THERR_MALLOC;
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1111
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1112 match->start = soffs;
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1113 match->len = coffs - soffs;
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1114
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1115 th_llist_append_node((th_llist_t **) pmatches, (th_llist_t *) match);
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1116 }
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1117
612
cc9ec51b4875 Add some comments and debug messages.
Matti Hamalainen <ccr@tnsp.org>
parents: 611
diff changeset
1118 // Check match count limit, if set
610
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1119 if (maxmatches > 0 && nmatches >= maxmatches)
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1120 break;
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1121
612
cc9ec51b4875 Add some comments and debug messages.
Matti Hamalainen <ccr@tnsp.org>
parents: 611
diff changeset
1122 // If offset was not advanced, increase by one
cc9ec51b4875 Add some comments and debug messages.
Matti Hamalainen <ccr@tnsp.org>
parents: 611
diff changeset
1123 // otherwise use end of match offset as new start
610
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1124 if (soffs == coffs)
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1125 soffs++;
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1126 else
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1127 soffs = coffs;
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1128 }
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1129 else
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1130 {
610
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1131 soffs++;
605
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1132 }
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1133 }
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1134
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1135 return THERR_OK;
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1136 }
566e6ef41f9d Initial commit of the highly experimental and unfinished regular expression
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
1137
610
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1138
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
1139 static void th_regex_free_match(th_regex_match_t *node)
610
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1140 {
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1141 (void) node;
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1142 // Nothing to do here at the moment
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1143 }
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1144
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1145
655
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
1146 /**
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
1147 * Deallocate the given set of @c th_regex_match_t
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
1148 * linked list structures pointed by @p matches.
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
1149 * All associated data will be freed.
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
1150 *
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
1151 * @param[in] matches structure to be deallocated
ae601363fdad Doxygenization.
Matti Hamalainen <ccr@tnsp.org>
parents: 652
diff changeset
1152 */
640
9e1f9e1d1487 Aaand some more work. Still just a broken concept.
Matti Hamalainen <ccr@tnsp.org>
parents: 639
diff changeset
1153 void th_regex_free_matches(th_regex_match_t *matches)
610
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1154 {
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1155 th_llist_free_func_node((th_llist_t *) matches,
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1156 (void (*)(th_llist_t *)) th_regex_free_match);
a0e8d9c6300b A bit more work on the regex stuff.
Matti Hamalainen <ccr@tnsp.org>
parents: 609
diff changeset
1157 }