Mercurial > hg > th-libs
annotate th_ioctx.h @ 650:24cbab6e88c6
Remove th_io_free(), merge the functionality to th_io_close(). Add flags
allocation for certain elements and/of the th_ioctx structure itself.
Add helper function th_io_init_stdio(th_ioctx *ctx, FILE *fh) for
initializing th_ioctx with stdio fops and given file handle.
author | Matti Hamalainen <ccr@tnsp.org> |
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date | Sat, 25 Jan 2020 13:05:11 +0200 |
parents | 594f197f7005 |
children | 3c9205d52376 |
rev | line source |
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1 /* |
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2 * Simple I/O abstraction and context handling layer |
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3 * Programmed and designed by Matti 'ccr' Hamalainen |
553 | 4 * (C) Copyright 2012-2020 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 #ifndef TH_IOCTX_H |
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9 #define TH_IOCTX_H |
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10 |
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11 #include "th_util.h" |
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12 #include <time.h> |
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13 |
92 | 14 |
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15 #ifdef __cplusplus |
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16 extern "C" { |
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17 #endif |
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18 |
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19 |
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20 // |
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21 // Typedefs and structures |
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22 // |
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23 struct th_ioctx; |
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24 struct th_ioctx_ops; |
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25 |
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26 |
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27 /** I/O context structure |
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28 */ |
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29 typedef struct th_ioctx |
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30 { |
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31 char *filename; ///< Context filename, if any. May be NULL. |
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32 BOOL fallocated; ///< TRUE if filename is allocated, FALSE if "const" |
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33 char *mode; ///< Context's stdio open "mode", may also be NULL. |
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34 BOOL mallocated; ///< TRUE if mode string is allocated, FALSE if "const" |
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35 BOOL allocated; ///< TRUE if this structure has been allocated |
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36 |
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37 void *data; ///< Internal data |
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38 time_t atime; ///< Last access time |
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39 int64_t size; ///< Size in bytes |
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40 int status; ///< Status |
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41 size_t line; ///< Line number |
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42 |
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43 void (*error)(struct th_ioctx *ctx, const int err, const char *msg); |
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44 void (*msg)(struct th_ioctx *ctx, const int level, const char *msg); |
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45 |
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46 const struct th_ioctx_ops *fops; ///< Pointer to I/O ops struct to be used with this context |
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47 } th_ioctx; |
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48 |
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49 |
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50 typedef struct th_ioctx_ops |
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51 { |
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52 char *name; ///< Name of this I/O ops definition |
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53 |
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54 int (*fopen)(th_ioctx *ctx); |
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55 void (*fclose)(th_ioctx *ctx); |
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56 |
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57 int (*freset)(th_ioctx *ctx); |
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58 int (*ferror)(th_ioctx *ctx); |
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59 int (*fseek)(th_ioctx *ctx, const off_t, const int whence); |
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60 off_t (*fsize)(th_ioctx *ctx); |
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61 off_t (*ftell)(th_ioctx *ctx); |
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62 BOOL (*feof)(th_ioctx *ctx); |
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63 int (*fgetc)(th_ioctx *ctx); |
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64 int (*fputc)(int, th_ioctx *ctx); |
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65 size_t (*fread)(void *ptr, const size_t, const size_t, th_ioctx *ctx); |
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66 size_t (*fwrite)(const void *ptr, const size_t, const size_t, th_ioctx *ctx); |
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67 |
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68 char * (*fgets)(char *str, int size, th_ioctx *ctx); |
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69 int (*fputs)(const char *str, th_ioctx *ctx); |
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70 int (*vfprintf)(th_ioctx *ctx, const char *fmt, va_list ap); |
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71 |
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72 } th_ioctx_ops; |
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73 |
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74 |
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75 // |
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76 // Some basic iops |
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77 // |
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78 extern const th_ioctx_ops th_stdio_io_ops; |
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79 |
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80 |
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81 |
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82 // |
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83 // I/O context management functions |
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84 // |
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85 th_ioctx * th_io_new(const th_ioctx_ops *fops, const char *filename); |
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86 int th_io_open(th_ioctx *ctx, const char *mode); |
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87 int th_io_fopen(th_ioctx **pctx, const th_ioctx_ops *fops, const char *filename, const char *mode); |
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88 void th_io_close(th_ioctx *ctx); |
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89 |
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90 void th_io_init_stdio(th_ioctx *ctx, FILE *fh); |
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91 |
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92 BOOL th_io_set_handlers(th_ioctx *ctx, |
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93 void (*error)(th_ioctx *, const int, const char *msg), |
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94 void (*msg)(th_ioctx *, const int, const char *msg)); |
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95 |
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96 int th_io_error_v(th_ioctx *ctx, const int err, const char *fmt, va_list ap); |
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97 void th_io_msg_v(th_ioctx *ctx, const int level, const char *fmt, va_list ap); |
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98 int th_io_error(th_ioctx *ctx, const int err, const char *fmt, ...) |
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99 TH_ATTR_PRINTF_FMT(3, 4); |
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100 void th_io_msg(th_ioctx *ctx, const int level, const char *fmt, ...) |
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101 TH_ATTR_PRINTF_FMT(3, 4); |
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102 |
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103 |
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104 // |
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105 // Basic I/O operations |
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106 // |
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107 int thfreset(th_ioctx *ctx); |
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108 int thferror(th_ioctx *ctx); |
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109 int thfseek(th_ioctx *ctx, const off_t, const int whence); |
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110 off_t thfsize(th_ioctx *ctx); |
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111 off_t thftell(th_ioctx *ctx); |
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112 BOOL thfeof(th_ioctx *ctx); |
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113 int thfgetc(th_ioctx *ctx); |
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114 int thfputc(int ch, th_ioctx *ctx); |
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115 size_t thfread(void *ptr, const size_t, const size_t, th_ioctx *ctx); |
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116 size_t thfwrite(const void *, const size_t, const size_t, th_ioctx *ctx); |
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117 char * thfgets(char *ptr, int size, th_ioctx *ctx); |
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118 int thfputs(const char *ptr, th_ioctx *ctx); |
202
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119 int thvfprintf(th_ioctx *ctx, const char *fmt, va_list ap); |
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120 int thfprintf(th_ioctx *ctx, const char *fmt, ...) |
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121 TH_ATTR_PRINTF_FMT(2, 3); |
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122 |
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123 int thfread_str(th_ioctx *ctx, void *ptr, const size_t len); |
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124 BOOL thfread_u8(th_ioctx *ctx, uint8_t *); |
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125 int thfwrite_str(th_ioctx *ctx, const void *ptr, const size_t len); |
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126 BOOL thfwrite_u8(th_ioctx *ctx, const uint8_t); |
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127 |
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128 |
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129 // |
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130 // Endian-handling file read/write routines |
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131 // |
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132 BOOL thfwrite_ne16(th_ioctx *ctx, const uint16_t v); |
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133 BOOL thfwrite_ne32(th_ioctx *ctx, const uint32_t v); |
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134 BOOL thfwrite_ne64(th_ioctx *ctx, const uint64_t v); |
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135 BOOL thfread_ne16(th_ioctx *ctx, uint16_t *v); |
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136 BOOL thfread_ne32(th_ioctx *ctx, uint32_t *v); |
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137 BOOL thfread_ne64(th_ioctx *ctx, uint64_t *v); |
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138 |
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139 BOOL thfwrite_le16(th_ioctx *ctx, const uint16_t v); |
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140 BOOL thfwrite_le32(th_ioctx *ctx, const uint32_t v); |
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141 BOOL thfwrite_le64(th_ioctx *ctx, const uint64_t v); |
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142 BOOL thfread_le16(th_ioctx *ctx, uint16_t *v); |
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143 BOOL thfread_le32(th_ioctx *ctx, uint32_t *v); |
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144 BOOL thfread_le64(th_ioctx *ctx, uint64_t *v); |
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145 |
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146 BOOL thfwrite_be16(th_ioctx *ctx, const uint16_t v); |
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147 BOOL thfwrite_be32(th_ioctx *ctx, const uint32_t v); |
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148 BOOL thfwrite_be64(th_ioctx *ctx, const uint64_t v); |
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149 BOOL thfread_be16(th_ioctx *ctx, uint16_t *v); |
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150 BOOL thfread_be32(th_ioctx *ctx, uint32_t *v); |
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151 BOOL thfread_be64(th_ioctx *ctx, uint64_t *v); |
67
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152 |
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153 |
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154 #ifdef __cplusplus |
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155 } |
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156 #endif |
129 | 157 #endif // TH_IOCTX_H |