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annotate th_string.h @ 567:b75f42ca08ef

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Massage th_vprintf_do() a bit, and factor out the format specifier handling into a separate function and use through a callback. This breaks the th_vprintf_do() API, unfortunately, but should make for further flexibility in future.
author Matti Hamalainen <ccr@tnsp.org>
date Wed, 08 Jan 2020 02:17:37 +0200
parents 3a852e9f70a6
children 2fbe42d957c4
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1 /*
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2 * Miscellaneous string-handling related utility-functions
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3 * Programmed and designed by Matti 'ccr' Hamalainen
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4 * (C) Copyright 2002-2020 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 /// @file
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9 /// @brief String utility functions
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10 #ifndef TH_STRING_H
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11 #define TH_STRING_H
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13 #include "th_util.h"
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14 #include <stdlib.h>
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15 #include <ctype.h>
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16 #include <stdarg.h>
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18 #ifdef __cplusplus
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19 extern "C" {
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20 #endif
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22 /** @def String utility wrapper macros
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23 */
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24 #define th_isalnum(c) isalnum((int)(unsigned char) c)
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25 #define th_isalpha(c) isalpha((int)(unsigned char) c)
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26 #define th_isascii(c) isascii((int)(unsigned char) c)
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27 #define th_isblank(c) isblank((int)(unsigned char) c)
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28 #define th_iscntrl(c) iscntrl((int)(unsigned char) c)
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29 #define th_isdigit(c) isdigit((int)(unsigned char) c)
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30 #define th_isgraph(c) isgraph((int)(unsigned char) c)
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31 #define th_islower(c) islower((int)(unsigned char) c)
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32 #define th_isprint(c) isprint((int)(unsigned char) c)
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33 #define th_ispunct(c) ispunct((int)(unsigned char) c)
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34 #define th_isspace(c) isspace((int)(unsigned char) c)
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35 #define th_isupper(c) isupper((int)(unsigned char) c)
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36 #define th_isxdigit(c) isxdigit((int)(unsigned char) c)
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37 #define th_iscrlf(c) ((c=='\r')||(c=='\n'))
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39 #define th_isspecial(q) (((q >= 0x5b) && (q <= 0x60)) || ((q >= 0x7b) && (q <= 0x7d)))
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41 #define th_tolower(c) tolower((int)(unsigned char) c)
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42 #define th_toupper(c) toupper((int)(unsigned char) c)
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45 /** @def String trimming option flags for th_strdup_trim()
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46 */
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47 enum
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48 {
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49 TH_TRIM_START = 1,
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50 TH_TRIM_END = 2,
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51 TH_TRIM_BOTH = 3
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52 };
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54
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55 /** @def Internal *printf() implementation flags
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56 */
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57 enum
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58 {
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59 TH_PF_NONE = 0x0000,
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60 TH_PF_ALT = 0x0001,
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61 TH_PF_SIGN = 0x0002,
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62 TH_PF_SPACE = 0x0004,
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63 TH_PF_GROUP = 0x0008,
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65 TH_PF_ZERO = 0x0100,
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66 TH_PF_LEFT = 0x0200,
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68 TH_PF_LONG = 0x1000,
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69 TH_PF_LONGLONG = 0x2000,
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70 TH_PF_POINTER = 0x4000,
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71 TH_PF_UPCASE = 0x8000,
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72 };
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75 /** @def Internal *printf() context structure
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76 */
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77 typedef struct
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78 {
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79 char *buf; ///< Resulting string buffer pointer (might not be used if printing to file or such)
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80 size_t size, pos; ///< Size of result string buffer, and current position in it
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81 int ipos; ///< Signed position
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82 void *data; ///< Pointer to other data (for example a FILE pointer)
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83 } th_vprintf_ctx;
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86 /** @def putch() helper function typedef for internal printf() implementation
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87 */
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88 typedef int (*th_vprintf_putch)(th_vprintf_ctx *ctx, const char ch);
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91 /** @def formatting helper function typedef for internal printf() implementation
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92 */
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93 typedef int (*th_vprintf_format)(
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94 th_vprintf_ctx *ctx, th_vprintf_putch vputch,
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95 int f_width, int f_prec, int f_flags,
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96 const char fmt, va_list ap);
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98
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99 /* Normal NUL-terminated string functions
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100 */
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101 char *th_strdup(const char *src);
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102 char *th_strndup(const char *src, const size_t n);
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103 char *th_strdup_trim(const char *src, const int flags);
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104 char *th_strndup_trim(const char *src, const size_t n, const int flags);
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105
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106 char *th_strndup_no0(const char *src, const size_t len);
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107 char *th_strndup_no0_trim(const char *src, const size_t len, const int flags);
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108
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109 int th_strcasecmp(const char *haystack, const char *needle);
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110 int th_strncasecmp(const char *haystack, const char *needle, size_t n);
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111 char *th_strrcasecmp(char *haystack, const char *needle);
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112 void th_strip_ctrlchars(char *str);
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113
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114 int th_vsnprintf(char *buf, size_t size, const char *fmt, va_list ap);
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115 int th_snprintf(char *buf, size_t size, const char *fmt, ...);
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116 int th_vfprintf(FILE *fh, const char *fmt, va_list ap);
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117 int th_fprintf(FILE *fh, const char *fmt, ...);
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119
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120 char *th_strdup_vprintf(const char *fmt, va_list ap);
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121 char *th_strdup_printf(const char *fmt, ...);
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122
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123 void th_pstr_vprintf(char **buf, const char *fmt, va_list ap);
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124 void th_pstr_printf(char **buf, const char *fmt, ...);
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125
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126 int th_pstr_cpy(char **pdst, const char *src);
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127 int th_pstr_cat(char **pdst, const char *src);
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130 /* Internal printf() implementation. NOTICE! This API may be unstable.
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131 */
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132 #define TH_VPRINTF_ALTFMT_FUNC(fname) char * fname ( \
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133 const char *buf, const size_t len, const int vret, int *prec, int *flags)
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134
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135 typedef char * (*th_vprintf_altfmt_func)(
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136 const char *buf, const size_t len, const int vret, int *prec, int *flags);
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137
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138
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139 int th_vprintf_do(th_vprintf_ctx *ctx, th_vprintf_putch vputch,
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140 th_vprintf_format vformat, const char *fmt, va_list ap);
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141
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142 int th_vprintf_put_str(th_vprintf_ctx *ctx, th_vprintf_putch vputch,
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143 const char *str, int f_flags, const int f_width, const int f_prec);
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144
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145 int th_vprintf_put_int(th_vprintf_ctx *ctx, th_vprintf_putch vputch,
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146 va_list ap, const int f_radix, int f_flags, int f_width, int f_prec,
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147 const BOOL f_unsig, th_vprintf_altfmt_func f_alt);
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148
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149 int th_vprintf_put_int_format(th_vprintf_ctx *ctx, th_vprintf_putch vputch,
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150 char *buf, int f_flags, int f_width, int f_prec, int f_len, int vret,
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151 BOOL f_neg, BOOL f_unsig, th_vprintf_altfmt_func f_alt);
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152
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153
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154 TH_VPRINTF_ALTFMT_FUNC(th_vprintf_altfmt_oct);
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155 TH_VPRINTF_ALTFMT_FUNC(th_vprintf_altfmt_hex);
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156
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157
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158 #define TH_PFUNC_NAME th_vprintf_buf_int
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159 #define TH_PFUNC_TYPE_S int
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160 #define TH_PFUNC_TYPE_U unsigned int
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161 #define TH_PFUNC_HEADER 1
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162 #include "th_printf1.c"
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163
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164
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165 #define TH_PFUNC_NAME th_vprintf_buf_int64
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166 #define TH_PFUNC_TYPE_S int64_t
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167 #define TH_PFUNC_TYPE_U uint64_t
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168 #define TH_PFUNC_HEADER 1
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169 #include "th_printf1.c"
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170
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171
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172 #ifdef TH_PRINTF_DEBUG
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173 extern BOOL th_printf_debug;
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174 extern char *th_printf_debug_prefix;
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175 #endif
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176
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177
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178 /* Parsing, matching
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179 */
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180 const char *th_findnext(const char *, size_t *);
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181 const char *th_findsep(const char *, size_t *, char);
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182 const char *th_findseporspace(const char *, size_t *, char);
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183
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184 BOOL th_strmatch(const char *haystack, const char *pattern);
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185 BOOL th_strcasematch(const char *haystack, const char *pattern);
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186
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187 BOOL th_get_hex_triplet(const char *str, unsigned int *value);
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188 BOOL th_get_boolean(const char *str, BOOL *value);
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189 BOOL th_get_int(const char *str, unsigned int *value, BOOL *neg);
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190
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191 void th_print_wrap(FILE *fh, const char *str, int spad, int rpad, int width);
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192
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193
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194 #ifdef __cplusplus
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195 }
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196 #endif
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197 #endif // TH_STRING_H