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annotate lib/uniconv.in.h @ 18079:4c948fd76734 default tip master

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author Karl Berry <karl@freefriends.org>
date Mon, 24 Aug 2015 06:09:19 -0700
parents ab58d4870664
children
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1 /* Conversions between Unicode and legacy encodings.
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Paul Eggert <eggert@cs.ucla.edu>
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2 Copyright (C) 2002, 2005, 2007, 2009-2015 Free Software Foundation, Inc.
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3
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4 This program is free software: you can redistribute it and/or modify it
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5 under the terms of the GNU Lesser General Public License as published
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6 by the Free Software Foundation; either version 3 of the License, or
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7 (at your option) any later version.
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8
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9 This program is distributed in the hope that it will be useful,
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10 but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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12 Lesser General Public License for more details.
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13
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14 You should have received a copy of the GNU Lesser General Public License
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15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
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16
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17 #ifndef _UNICONV_H
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18 #define _UNICONV_H
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19
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20 /* Get size_t. */
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21 #include <stddef.h>
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22
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23 #include "unitypes.h"
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24
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25 /* Get enum iconv_ilseq_handler. */
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26 #include "iconveh.h"
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27
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28 /* Get uniconv_register_autodetect() declaration. */
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29 #include "striconveha.h"
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30
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31 /* Get locale_charset() declaration. */
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32 #include "localcharset.h"
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33
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34
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35 #ifdef __cplusplus
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36 extern "C" {
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37 #endif
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38
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39
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40 /* Converts an entire string, possibly including NUL bytes, from one encoding
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41 to a Unicode encoding.
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42 Converts a memory region given in encoding FROMCODE. FROMCODE is as for
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43 iconv_open(3).
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44 The input is in the memory region between SRC (inclusive) and SRC + SRCLEN
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45 (exclusive).
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46 If OFFSETS is not NULL, it should point to an array of SRCLEN integers; this
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47 array is filled with offsets into the result, i.e. the character starting
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48 at SRC[i] corresponds to the character starting at (*RESULTP)[OFFSETS[i]],
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49 and other offsets are set to (size_t)(-1).
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50 RESULTBUF and *LENGTHP should initially be a scratch buffer and its size,
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51 or *RESULTBUF can be NULL.
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52 May erase the contents of the memory at RESULTBUF.
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53 If successful: The resulting Unicode string (non-NULL) is returned and its
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54 length stored in *LENGTHP. The resulting string is RESULTBUF if no dynamic
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55 memory allocation was necessary, or a freshly allocated memory block
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56 otherwise.
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57 In case of error: NULL is returned and errno is set. Particular errno
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58 values: EINVAL, EILSEQ, ENOMEM. */
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59 extern uint8_t *
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60 u8_conv_from_encoding (const char *fromcode,
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61 enum iconv_ilseq_handler handler,
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62 const char *src, size_t srclen,
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63 size_t *offsets,
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64 uint8_t *resultbuf, size_t *lengthp);
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65 extern uint16_t *
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66 u16_conv_from_encoding (const char *fromcode,
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67 enum iconv_ilseq_handler handler,
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68 const char *src, size_t srclen,
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69 size_t *offsets,
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70 uint16_t *resultbuf, size_t *lengthp);
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71 extern uint32_t *
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72 u32_conv_from_encoding (const char *fromcode,
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73 enum iconv_ilseq_handler handler,
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74 const char *src, size_t srclen,
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75 size_t *offsets,
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76 uint32_t *resultbuf, size_t *lengthp);
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77
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78 /* Converts an entire Unicode string, possibly including NUL units, from a
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79 Unicode encoding to a given encoding.
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80 Converts a memory region to encoding TOCODE. TOCODE is as for
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81 iconv_open(3).
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82 The input is in the memory region between SRC (inclusive) and SRC + SRCLEN
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83 (exclusive).
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84 If OFFSETS is not NULL, it should point to an array of SRCLEN integers; this
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85 array is filled with offsets into the result, i.e. the character starting
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86 at SRC[i] corresponds to the character starting at (*RESULTP)[OFFSETS[i]],
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87 and other offsets are set to (size_t)(-1).
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88 RESULTBUF and *LENGTHP should initially be a scratch buffer and its size,
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89 or RESULTBUF can be NULL.
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90 May erase the contents of the memory at RESULTBUF.
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91 If successful: The resulting string (non-NULL) is returned and its length
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92 stored in *LENGTHP. The resulting string is RESULTBUF if no dynamic memory
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93 allocation was necessary, or a freshly allocated memory block otherwise.
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94 In case of error: NULL is returned and errno is set. Particular errno
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95 values: EINVAL, EILSEQ, ENOMEM. */
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96 extern char *
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97 u8_conv_to_encoding (const char *tocode,
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98 enum iconv_ilseq_handler handler,
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99 const uint8_t *src, size_t srclen,
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100 size_t *offsets,
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101 char *resultbuf, size_t *lengthp);
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102 extern char *
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103 u16_conv_to_encoding (const char *tocode,
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104 enum iconv_ilseq_handler handler,
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105 const uint16_t *src, size_t srclen,
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106 size_t *offsets,
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107 char *resultbuf, size_t *lengthp);
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108 extern char *
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109 u32_conv_to_encoding (const char *tocode,
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110 enum iconv_ilseq_handler handler,
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111 const uint32_t *src, size_t srclen,
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112 size_t *offsets,
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113 char *resultbuf, size_t *lengthp);
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114
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115 /* Converts a NUL terminated string from a given encoding.
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116 The result is malloc allocated, or NULL (with errno set) in case of error.
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117 Particular errno values: EILSEQ, ENOMEM. */
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118 extern uint8_t *
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119 u8_strconv_from_encoding (const char *string,
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120 const char *fromcode,
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121 enum iconv_ilseq_handler handler);
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122 extern uint16_t *
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123 u16_strconv_from_encoding (const char *string,
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124 const char *fromcode,
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125 enum iconv_ilseq_handler handler);
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126 extern uint32_t *
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127 u32_strconv_from_encoding (const char *string,
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128 const char *fromcode,
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129 enum iconv_ilseq_handler handler);
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130
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131 /* Converts a NUL terminated string to a given encoding.
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132 The result is malloc allocated, or NULL (with errno set) in case of error.
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133 Particular errno values: EILSEQ, ENOMEM. */
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134 extern char *
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135 u8_strconv_to_encoding (const uint8_t *string,
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136 const char *tocode,
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137 enum iconv_ilseq_handler handler);
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138 extern char *
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139 u16_strconv_to_encoding (const uint16_t *string,
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140 const char *tocode,
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141 enum iconv_ilseq_handler handler);
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142 extern char *
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143 u32_strconv_to_encoding (const uint32_t *string,
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144 const char *tocode,
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145 enum iconv_ilseq_handler handler);
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146
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147 /* Converts a NUL terminated string from the locale encoding.
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148 The result is malloc allocated, or NULL (with errno set) in case of error.
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149 Particular errno values: ENOMEM. */
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150 extern uint8_t *
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151 u8_strconv_from_locale (const char *string);
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152 extern uint16_t *
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153 u16_strconv_from_locale (const char *string);
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154 extern uint32_t *
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155 u32_strconv_from_locale (const char *string);
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156
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157 /* Converts a NUL terminated string to the locale encoding.
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158 The result is malloc allocated, or NULL (with errno set) in case of error.
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159 Particular errno values: ENOMEM. */
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160 extern char *
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161 u8_strconv_to_locale (const uint8_t *string);
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162 extern char *
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163 u16_strconv_to_locale (const uint16_t *string);
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164 extern char *
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165 u32_strconv_to_locale (const uint32_t *string);
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166
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167
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168 #ifdef __cplusplus
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169 }
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170 #endif
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171
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172 #endif /* _UNICONV_H */