1 /* Charset conversion with out-of-memory checking. 2 Copyright (C) 2001-2004, 2006-2007, 2009-2018 Free Software Foundation, Inc. 3 Written by Bruno Haible and Simon Josefsson. 4 5 This program is free software: you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by 7 the Free Software Foundation; either version 3 of the License, or 8 (at your option) any later version. 9 10 This program is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program. If not, see <https://www.gnu.org/licenses/>. */ 17 18 #ifndef _XSTRICONV_H 19 #define _XSTRICONV_H 20 21 #include <stddef.h> 22 #if HAVE_ICONV 23 #include <iconv.h> 24 #endif 25 26 27 #ifdef __cplusplus 28 extern "C" { 29 #endif 30 31 32 #if HAVE_ICONV 33 34 /* Convert an entire string from one encoding to another, using iconv. 35 The original string is at [SRC,...,SRC+SRCLEN-1]. 36 The conversion descriptor is passed as CD. 37 *RESULTP and *LENGTH should initially be a scratch buffer and its size, 38 or *RESULTP can initially be NULL. 39 May erase the contents of the memory at *RESULTP. 40 Upon memory allocation failure, report the error and exit. 41 Return value: 0 if successful, otherwise -1 and errno set. 42 If successful: The resulting string is stored in *RESULTP and its length 43 in *LENGTHP. *RESULTP is set to a freshly allocated memory block, or is 44 unchanged if no dynamic memory allocation was necessary. */ 45 extern int xmem_cd_iconv (const char *src, size_t srclen, iconv_t cd, 46 char **resultp, size_t *lengthp); 47 48 /* Convert an entire string from one encoding to another, using iconv. 49 The original string is the NUL-terminated string starting at SRC. 50 The conversion descriptor is passed as CD. Both the "from" and the "to" 51 encoding must use a single NUL byte at the end of the string (i.e. not 52 UCS-2, UCS-4, UTF-16, UTF-32). 53 Allocate a malloced memory block for the result. 54 Upon memory allocation failure, report the error and exit. 55 Return value: the freshly allocated resulting NUL-terminated string if 56 successful, otherwise NULL and errno set. */ 57 extern char * xstr_cd_iconv (const char *src, iconv_t cd); 58 59 #endif 60 61 /* Convert an entire string from one encoding to another, using iconv. 62 The original string is the NUL-terminated string starting at SRC. 63 Both the "from" and the "to" encoding must use a single NUL byte at the 64 end of the string (i.e. not UCS-2, UCS-4, UTF-16, UTF-32). 65 Allocate a malloced memory block for the result. 66 Upon memory allocation failure, report the error and exit. 67 Return value: the freshly allocated resulting NUL-terminated string if 68 successful, otherwise NULL and errno set. */ 69 extern char * xstr_iconv (const char *src, 70 const char *from_codeset, const char *to_codeset); 71 72 73 #ifdef __cplusplus 74 } 75 #endif 76 77 78 #endif /* _XSTRICONV_H */ 79