1 /* Conversions between Unicode and legacy encodings. 2 Copyright (C) 2002, 2005, 2007, 2009-2021 Free Software Foundation, Inc. 3 4 This file is free software: you can redistribute it and/or modify 5 it under the terms of the GNU Lesser General Public License as 6 published by the Free Software Foundation; either version 2.1 of the 7 License, or (at your option) any later version. 8 9 This file is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 GNU Lesser General Public License for more details. 13 14 You should have received a copy of the GNU Lesser General Public License 15 along with this program. If not, see <https://www.gnu.org/licenses/>. */ 16 17 #ifndef _UNICONV_H 18 #define _UNICONV_H 19 20 /* Get size_t. */ 21 #include <stddef.h> 22 23 #include "unitypes.h" 24 25 /* Get enum iconv_ilseq_handler. */ 26 #include "iconveh.h" 27 28 /* Get uniconv_register_autodetect() declaration. */ 29 #include "striconveha.h" 30 31 /* Get locale_charset() declaration. */ 32 #include "localcharset.h" 33 34 35 #ifdef __cplusplus 36 extern "C" { 37 #endif 38 39 40 /* Converts an entire string, possibly including NUL bytes, from one encoding 41 to a Unicode encoding. 42 Converts a memory region given in encoding FROMCODE. FROMCODE is as for 43 iconv_open(3). 44 The input is in the memory region between SRC (inclusive) and SRC + SRCLEN 45 (exclusive). 46 If OFFSETS is not NULL, it should point to an array of SRCLEN integers; this 47 array is filled with offsets into the result, i.e. the character starting 48 at SRC[i] corresponds to the character starting at (*RESULTP)[OFFSETS[i]], 49 and other offsets are set to (size_t)(-1). 50 RESULTBUF and *LENGTHP should initially be a scratch buffer and its size, 51 or *RESULTBUF can be NULL. 52 May erase the contents of the memory at RESULTBUF. 53 If successful: The resulting Unicode string (non-NULL) is returned and its 54 length stored in *LENGTHP. The resulting string is RESULTBUF if no dynamic 55 memory allocation was necessary, or a freshly allocated memory block 56 otherwise. 57 In case of error: NULL is returned and errno is set. Particular errno 58 values: EINVAL, EILSEQ, ENOMEM. */ 59 extern uint8_t * 60 u8_conv_from_encoding (const char *fromcode, 61 enum iconv_ilseq_handler handler, 62 const char *src, size_t srclen, 63 size_t *offsets, 64 uint8_t *resultbuf, size_t *lengthp); 65 extern uint16_t * 66 u16_conv_from_encoding (const char *fromcode, 67 enum iconv_ilseq_handler handler, 68 const char *src, size_t srclen, 69 size_t *offsets, 70 uint16_t *resultbuf, size_t *lengthp); 71 extern uint32_t * 72 u32_conv_from_encoding (const char *fromcode, 73 enum iconv_ilseq_handler handler, 74 const char *src, size_t srclen, 75 size_t *offsets, 76 uint32_t *resultbuf, size_t *lengthp); 77 78 /* Converts an entire Unicode string, possibly including NUL units, from a 79 Unicode encoding to a given encoding. 80 Converts a memory region to encoding TOCODE. TOCODE is as for 81 iconv_open(3). 82 The input is in the memory region between SRC (inclusive) and SRC + SRCLEN 83 (exclusive). 84 If OFFSETS is not NULL, it should point to an array of SRCLEN integers; this 85 array is filled with offsets into the result, i.e. the character starting 86 at SRC[i] corresponds to the character starting at (*RESULTP)[OFFSETS[i]], 87 and other offsets are set to (size_t)(-1). 88 RESULTBUF and *LENGTHP should initially be a scratch buffer and its size, 89 or RESULTBUF can be NULL. 90 May erase the contents of the memory at RESULTBUF. 91 If successful: The resulting string (non-NULL) is returned and its length 92 stored in *LENGTHP. The resulting string is RESULTBUF if no dynamic memory 93 allocation was necessary, or a freshly allocated memory block otherwise. 94 In case of error: NULL is returned and errno is set. Particular errno 95 values: EINVAL, EILSEQ, ENOMEM. */ 96 extern char * 97 u8_conv_to_encoding (const char *tocode, 98 enum iconv_ilseq_handler handler, 99 const uint8_t *src, size_t srclen, 100 size_t *offsets, 101 char *_UC_RESTRICT resultbuf, size_t *lengthp); 102 extern char * 103 u16_conv_to_encoding (const char *tocode, 104 enum iconv_ilseq_handler handler, 105 const uint16_t *src, size_t srclen, 106 size_t *offsets, 107 char *_UC_RESTRICT resultbuf, size_t *lengthp); 108 extern char * 109 u32_conv_to_encoding (const char *tocode, 110 enum iconv_ilseq_handler handler, 111 const uint32_t *src, size_t srclen, 112 size_t *offsets, 113 char *_UC_RESTRICT resultbuf, size_t *lengthp); 114 115 /* Converts a NUL terminated string from a given encoding. 116 The result is malloc allocated, or NULL (with errno set) in case of error. 117 Particular errno values: EILSEQ, ENOMEM. */ 118 extern uint8_t * 119 u8_strconv_from_encoding (const char *string, 120 const char *fromcode, 121 enum iconv_ilseq_handler handler); 122 extern uint16_t * 123 u16_strconv_from_encoding (const char *string, 124 const char *fromcode, 125 enum iconv_ilseq_handler handler); 126 extern uint32_t * 127 u32_strconv_from_encoding (const char *string, 128 const char *fromcode, 129 enum iconv_ilseq_handler handler); 130 131 /* Converts a NUL terminated string to a given encoding. 132 The result is malloc allocated, or NULL (with errno set) in case of error. 133 Particular errno values: EILSEQ, ENOMEM. */ 134 extern char * 135 u8_strconv_to_encoding (const uint8_t *string, 136 const char *tocode, 137 enum iconv_ilseq_handler handler); 138 extern char * 139 u16_strconv_to_encoding (const uint16_t *string, 140 const char *tocode, 141 enum iconv_ilseq_handler handler); 142 extern char * 143 u32_strconv_to_encoding (const uint32_t *string, 144 const char *tocode, 145 enum iconv_ilseq_handler handler); 146 147 /* Converts a NUL terminated string from the locale encoding. 148 The result is malloc allocated, or NULL (with errno set) in case of error. 149 Particular errno values: ENOMEM. */ 150 extern uint8_t * 151 u8_strconv_from_locale (const char *string); 152 extern uint16_t * 153 u16_strconv_from_locale (const char *string); 154 extern uint32_t * 155 u32_strconv_from_locale (const char *string); 156 157 /* Converts a NUL terminated string to the locale encoding. 158 The result is malloc allocated, or NULL (with errno set) in case of error. 159 Particular errno values: ENOMEM. */ 160 extern char * 161 u8_strconv_to_locale (const uint8_t *string); 162 extern char * 163 u16_strconv_to_locale (const uint16_t *string); 164 extern char * 165 u32_strconv_to_locale (const uint32_t *string); 166 167 168 #ifdef __cplusplus 169 } 170 #endif 171 172 #endif /* _UNICONV_H */