11
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1 /* inih -- simple .INI file parser
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2
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3 SPDX-License-Identifier: BSD-3-Clause
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4
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5 Copyright (C) 2009-2020, Ben Hoyt
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6
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7 inih is released under the New BSD license (see LICENSE.txt). Go to the project
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8 home page for more info:
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9
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10 https://github.com/benhoyt/inih
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11
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12 */
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13
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14 #ifndef INI_H
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15 #define INI_H
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16
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17 /* Make this header file easier to include in C++ code */
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18 #ifdef __cplusplus
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19 extern "C" {
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20 #endif
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21
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22 #include <stdio.h>
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23
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24 /* Nonzero if ini_handler callback should accept lineno parameter. */
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25 #ifndef INI_HANDLER_LINENO
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26 #define INI_HANDLER_LINENO 0
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27 #endif
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28
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29 /* Visibility symbols, required for Windows DLLs */
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30 #ifndef INI_API
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31 #if defined _WIN32 || defined __CYGWIN__
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32 # ifdef INI_SHARED_LIB
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33 # ifdef INI_SHARED_LIB_BUILDING
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34 # define INI_API __declspec(dllexport)
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35 # else
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36 # define INI_API __declspec(dllimport)
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37 # endif
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38 # else
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39 # define INI_API
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40 # endif
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41 #else
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42 # if defined(__GNUC__) && __GNUC__ >= 4
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43 # define INI_API __attribute__ ((visibility ("default")))
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44 # else
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45 # define INI_API
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46 # endif
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47 #endif
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48 #endif
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49
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50 /* Typedef for prototype of handler function. */
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51 #if INI_HANDLER_LINENO
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52 typedef int (*ini_handler)(void* user, const char* section,
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53 const char* name, const char* value,
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54 int lineno);
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55 #else
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56 typedef int (*ini_handler)(void* user, const char* section,
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57 const char* name, const char* value);
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58 #endif
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59
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60 /* Typedef for prototype of fgets-style reader function. */
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61 typedef char* (*ini_reader)(char* str, int num, void* stream);
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62
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63 /* Parse given INI-style file. May have [section]s, name=value pairs
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64 (whitespace stripped), and comments starting with ';' (semicolon). Section
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65 is "" if name=value pair parsed before any section heading. name:value
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66 pairs are also supported as a concession to Python's configparser.
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67
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68 For each name=value pair parsed, call handler function with given user
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69 pointer as well as section, name, and value (data only valid for duration
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70 of handler call). Handler should return nonzero on success, zero on error.
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71
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72 Returns 0 on success, line number of first error on parse error (doesn't
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73 stop on first error), -1 on file open error, or -2 on memory allocation
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74 error (only when INI_USE_STACK is zero).
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75 */
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76 INI_API int ini_parse(const char* filename, ini_handler handler, void* user);
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77
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78 /* Same as ini_parse(), but takes a FILE* instead of filename. This doesn't
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79 close the file when it's finished -- the caller must do that. */
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80 INI_API int ini_parse_file(FILE* file, ini_handler handler, void* user);
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81
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82 /* Same as ini_parse(), but takes an ini_reader function pointer instead of
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83 filename. Used for implementing custom or string-based I/O (see also
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84 ini_parse_string). */
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85 INI_API int ini_parse_stream(ini_reader reader, void* stream, ini_handler handler,
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86 void* user);
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87
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88 /* Same as ini_parse(), but takes a zero-terminated string with the INI data
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89 instead of a file. Useful for parsing INI data from a network socket or
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90 already in memory. */
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91 INI_API int ini_parse_string(const char* string, ini_handler handler, void* user);
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92
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93 /* Nonzero to allow multi-line value parsing, in the style of Python's
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94 configparser. If allowed, ini_parse() will call the handler with the same
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95 name for each subsequent line parsed. */
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96 #ifndef INI_ALLOW_MULTILINE
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97 #define INI_ALLOW_MULTILINE 1
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98 #endif
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99
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100 /* Nonzero to allow a UTF-8 BOM sequence (0xEF 0xBB 0xBF) at the start of
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101 the file. See https://github.com/benhoyt/inih/issues/21 */
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102 #ifndef INI_ALLOW_BOM
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103 #define INI_ALLOW_BOM 1
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104 #endif
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105
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106 /* Chars that begin a start-of-line comment. Per Python configparser, allow
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107 both ; and # comments at the start of a line by default. */
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108 #ifndef INI_START_COMMENT_PREFIXES
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109 #define INI_START_COMMENT_PREFIXES ";#"
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110 #endif
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111
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112 /* Nonzero to allow inline comments (with valid inline comment characters
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113 specified by INI_INLINE_COMMENT_PREFIXES). Set to 0 to turn off and match
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114 Python 3.2+ configparser behaviour. */
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115 #ifndef INI_ALLOW_INLINE_COMMENTS
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116 #define INI_ALLOW_INLINE_COMMENTS 1
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117 #endif
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118 #ifndef INI_INLINE_COMMENT_PREFIXES
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119 #define INI_INLINE_COMMENT_PREFIXES ";"
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120 #endif
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121
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122 /* Nonzero to use stack for line buffer, zero to use heap (malloc/free). */
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123 #ifndef INI_USE_STACK
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124 #define INI_USE_STACK 1
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125 #endif
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126
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127 /* Maximum line length for any line in INI file (stack or heap). Note that
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128 this must be 3 more than the longest line (due to '\r', '\n', and '\0'). */
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129 #ifndef INI_MAX_LINE
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130 #define INI_MAX_LINE 200
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131 #endif
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132
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133 /* Nonzero to allow heap line buffer to grow via realloc(), zero for a
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134 fixed-size buffer of INI_MAX_LINE bytes. Only applies if INI_USE_STACK is
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135 zero. */
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136 #ifndef INI_ALLOW_REALLOC
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137 #define INI_ALLOW_REALLOC 0
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138 #endif
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139
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140 /* Initial size in bytes for heap line buffer. Only applies if INI_USE_STACK
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141 is zero. */
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142 #ifndef INI_INITIAL_ALLOC
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143 #define INI_INITIAL_ALLOC 200
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144 #endif
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145
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146 /* Stop parsing on first error (default is to keep parsing). */
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147 #ifndef INI_STOP_ON_FIRST_ERROR
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148 #define INI_STOP_ON_FIRST_ERROR 0
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149 #endif
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150
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151 /* Nonzero to call the handler at the start of each new section (with
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152 name and value NULL). Default is to only call the handler on
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153 each name=value pair. */
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154 #ifndef INI_CALL_HANDLER_ON_NEW_SECTION
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155 #define INI_CALL_HANDLER_ON_NEW_SECTION 0
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156 #endif
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157
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158 /* Nonzero to allow a name without a value (no '=' or ':' on the line) and
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159 call the handler with value NULL in this case. Default is to treat
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160 no-value lines as an error. */
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161 #ifndef INI_ALLOW_NO_VALUE
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162 #define INI_ALLOW_NO_VALUE 0
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163 #endif
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164
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165 /* Nonzero to use custom ini_malloc, ini_free, and ini_realloc memory
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166 allocation functions (INI_USE_STACK must also be 0). These functions must
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167 have the same signatures as malloc/free/realloc and behave in a similar
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168 way. ini_realloc is only needed if INI_ALLOW_REALLOC is set. */
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169 #ifndef INI_CUSTOM_ALLOCATOR
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170 #define INI_CUSTOM_ALLOCATOR 0
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171 #endif
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172
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173
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174 #ifdef __cplusplus
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175 }
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176 #endif
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177
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178 #endif /* INI_H */
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