diff options
Diffstat (limited to 'distrib/sdl-1.2.12/src/stdlib/SDL_iconv.c')
| -rw-r--r-- | distrib/sdl-1.2.12/src/stdlib/SDL_iconv.c | 881 |
1 files changed, 0 insertions, 881 deletions
diff --git a/distrib/sdl-1.2.12/src/stdlib/SDL_iconv.c b/distrib/sdl-1.2.12/src/stdlib/SDL_iconv.c deleted file mode 100644 index 307c73c..0000000 --- a/distrib/sdl-1.2.12/src/stdlib/SDL_iconv.c +++ /dev/null @@ -1,881 +0,0 @@ -/* - SDL - Simple DirectMedia Layer - Copyright (C) 1997-2006 Sam Lantinga - - This library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - This library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with this library; if not, write to the Free Software - Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - - Sam Lantinga - slouken@libsdl.org -*/ -#include "SDL_config.h" - -/* This file contains portable iconv functions for SDL */ - -#include "SDL_stdinc.h" -#include "SDL_endian.h" - -#ifdef HAVE_ICONV - -/* Depending on which standard the iconv() was implemented with, - iconv() may or may not use const char ** for the inbuf param. - If we get this wrong, it's just a warning, so no big deal. -*/ -#if defined(_XGP6) || \ - defined(__GLIBC__) && ((__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)) -#define ICONV_INBUF_NONCONST -#endif - -#include <errno.h> - -size_t SDL_iconv(SDL_iconv_t cd, - const char **inbuf, size_t *inbytesleft, - char **outbuf, size_t *outbytesleft) -{ - size_t retCode; -#ifdef ICONV_INBUF_NONCONST - retCode = iconv(cd, (char **)inbuf, inbytesleft, outbuf, outbytesleft); -#else - retCode = iconv(cd, inbuf, inbytesleft, outbuf, outbytesleft); -#endif - if ( retCode == (size_t)-1 ) { - switch(errno) { - case E2BIG: - return SDL_ICONV_E2BIG; - case EILSEQ: - return SDL_ICONV_EILSEQ; - case EINVAL: - return SDL_ICONV_EINVAL; - default: - return SDL_ICONV_ERROR; - } - } - return retCode; -} - -#else - -/* Lots of useful information on Unicode at: - http://www.cl.cam.ac.uk/~mgk25/unicode.html -*/ - -#define UNICODE_BOM 0xFEFF - -#define UNKNOWN_ASCII '?' -#define UNKNOWN_UNICODE 0xFFFD - -enum { - ENCODING_UNKNOWN, - ENCODING_ASCII, - ENCODING_LATIN1, - ENCODING_UTF8, - ENCODING_UTF16, /* Needs byte order marker */ - ENCODING_UTF16BE, - ENCODING_UTF16LE, - ENCODING_UTF32, /* Needs byte order marker */ - ENCODING_UTF32BE, - ENCODING_UTF32LE, - ENCODING_UCS2, /* Native byte order assumed */ - ENCODING_UCS4, /* Native byte order assumed */ -}; -#if SDL_BYTEORDER == SDL_BIG_ENDIAN -#define ENCODING_UTF16NATIVE ENCODING_UTF16BE -#define ENCODING_UTF32NATIVE ENCODING_UTF32BE -#else -#define ENCODING_UTF16NATIVE ENCODING_UTF16LE -#define ENCODING_UTF32NATIVE ENCODING_UTF32LE -#endif - -struct _SDL_iconv_t -{ - int src_fmt; - int dst_fmt; -}; - -static struct { - const char *name; - int format; -} encodings[] = { - { "ASCII", ENCODING_ASCII }, - { "US-ASCII", ENCODING_ASCII }, - { "8859-1", ENCODING_LATIN1 }, - { "ISO-8859-1", ENCODING_LATIN1 }, - { "UTF8", ENCODING_UTF8 }, - { "UTF-8", ENCODING_UTF8 }, - { "UTF16", ENCODING_UTF16 }, - { "UTF-16", ENCODING_UTF16 }, - { "UTF16BE", ENCODING_UTF16BE }, - { "UTF-16BE", ENCODING_UTF16BE }, - { "UTF16LE", ENCODING_UTF16LE }, - { "UTF-16LE", ENCODING_UTF16LE }, - { "UTF32", ENCODING_UTF32 }, - { "UTF-32", ENCODING_UTF32 }, - { "UTF32BE", ENCODING_UTF32BE }, - { "UTF-32BE", ENCODING_UTF32BE }, - { "UTF32LE", ENCODING_UTF32LE }, - { "UTF-32LE", ENCODING_UTF32LE }, - { "UCS2", ENCODING_UCS2 }, - { "UCS-2", ENCODING_UCS2 }, - { "UCS4", ENCODING_UCS4 }, - { "UCS-4", ENCODING_UCS4 }, -}; - -static const char *getlocale(char *buffer, size_t bufsize) -{ - const char *lang; - char *ptr; - - lang = SDL_getenv("LC_ALL"); - if ( !lang ) { - lang = SDL_getenv("LC_CTYPE"); - } - if ( !lang ) { - lang = SDL_getenv("LC_MESSAGES"); - } - if ( !lang ) { - lang = SDL_getenv("LANG"); - } - if ( !lang || !*lang || SDL_strcmp(lang, "C") == 0 ) { - lang = "ASCII"; - } - - /* We need to trim down strings like "en_US.UTF-8@blah" to "UTF-8" */ - ptr = SDL_strchr(lang, '.'); - if (ptr != NULL) { - lang = ptr + 1; - } - - SDL_strlcpy(buffer, lang, bufsize); - ptr = SDL_strchr(buffer, '@'); - if (ptr != NULL) { - *ptr = '\0'; /* chop end of string. */ - } - - return buffer; -} - -SDL_iconv_t SDL_iconv_open(const char *tocode, const char *fromcode) -{ - int src_fmt = ENCODING_UNKNOWN; - int dst_fmt = ENCODING_UNKNOWN; - int i; - char fromcode_buffer[64]; - char tocode_buffer[64]; - - if ( !fromcode || !*fromcode ) { - fromcode = getlocale(fromcode_buffer, sizeof(fromcode_buffer)); - } - if ( !tocode || !*tocode ) { - tocode = getlocale(tocode_buffer, sizeof(tocode_buffer)); - } - for ( i = 0; i < SDL_arraysize(encodings); ++i ) { - if ( SDL_strcasecmp(fromcode, encodings[i].name) == 0 ) { - src_fmt = encodings[i].format; - if ( dst_fmt != ENCODING_UNKNOWN ) { - break; - } - } - if ( SDL_strcasecmp(tocode, encodings[i].name) == 0 ) { - dst_fmt = encodings[i].format; - if ( src_fmt != ENCODING_UNKNOWN ) { - break; - } - } - } - if ( src_fmt != ENCODING_UNKNOWN && dst_fmt != ENCODING_UNKNOWN ) { - SDL_iconv_t cd = (SDL_iconv_t)SDL_malloc(sizeof(*cd)); - if ( cd ) { - cd->src_fmt = src_fmt; - cd->dst_fmt = dst_fmt; - return cd; - } - } - return (SDL_iconv_t)-1; -} - -size_t SDL_iconv(SDL_iconv_t cd, - const char **inbuf, size_t *inbytesleft, - char **outbuf, size_t *outbytesleft) -{ - /* For simplicity, we'll convert everything to and from UCS-4 */ - const char *src; - char *dst; - size_t srclen, dstlen; - Uint32 ch = 0; - size_t total; - - if ( !inbuf || !*inbuf ) { - /* Reset the context */ - return 0; - } - if ( !outbuf || !*outbuf || !outbytesleft || !*outbytesleft ) { - return SDL_ICONV_E2BIG; - } - src = *inbuf; - srclen = (inbytesleft ? *inbytesleft : 0); - dst = *outbuf; - dstlen = *outbytesleft; - - switch ( cd->src_fmt ) { - case ENCODING_UTF16: - /* Scan for a byte order marker */ - { - Uint8 *p = (Uint8 *)src; - size_t n = srclen / 2; - while ( n ) { - if ( p[0] == 0xFF && p[1] == 0xFE ) { - cd->src_fmt = ENCODING_UTF16BE; - break; - } else if ( p[0] == 0xFE && p[1] == 0xFF ) { - cd->src_fmt = ENCODING_UTF16LE; - break; - } - p += 2; - --n; - } - if ( n == 0 ) { - /* We can't tell, default to host order */ - cd->src_fmt = ENCODING_UTF16NATIVE; - } - } - break; - case ENCODING_UTF32: - /* Scan for a byte order marker */ - { - Uint8 *p = (Uint8 *)src; - size_t n = srclen / 4; - while ( n ) { - if ( p[0] == 0xFF && p[1] == 0xFE && - p[2] == 0x00 && p[3] == 0x00 ) { - cd->src_fmt = ENCODING_UTF32BE; - break; - } else if ( p[0] == 0x00 && p[1] == 0x00 && - p[2] == 0xFE && p[3] == 0xFF ) { - cd->src_fmt = ENCODING_UTF32LE; - break; - } - p += 4; - --n; - } - if ( n == 0 ) { - /* We can't tell, default to host order */ - cd->src_fmt = ENCODING_UTF32NATIVE; - } - } - break; - } - - switch ( cd->dst_fmt ) { - case ENCODING_UTF16: - /* Default to host order, need to add byte order marker */ - if ( dstlen < 2 ) { - return SDL_ICONV_E2BIG; - } - *(Uint16 *)dst = UNICODE_BOM; - dst += 2; - dstlen -= 2; - cd->dst_fmt = ENCODING_UTF16NATIVE; - break; - case ENCODING_UTF32: - /* Default to host order, need to add byte order marker */ - if ( dstlen < 4 ) { - return SDL_ICONV_E2BIG; - } - *(Uint32 *)dst = UNICODE_BOM; - dst += 4; - dstlen -= 4; - cd->dst_fmt = ENCODING_UTF32NATIVE; - break; - } - - total = 0; - while ( srclen > 0 ) { - /* Decode a character */ - switch ( cd->src_fmt ) { - case ENCODING_ASCII: - { - Uint8 *p = (Uint8 *)src; - ch = (Uint32)(p[0] & 0x7F); - ++src; - --srclen; - } - break; - case ENCODING_LATIN1: - { - Uint8 *p = (Uint8 *)src; - ch = (Uint32)p[0]; - ++src; - --srclen; - } - break; - case ENCODING_UTF8: /* RFC 3629 */ - { - Uint8 *p = (Uint8 *)src; - size_t left = 0; - SDL_bool overlong = SDL_FALSE; - if ( p[0] >= 0xFC ) { - if ( (p[0] & 0xFE) != 0xFC ) { - /* Skip illegal sequences - return SDL_ICONV_EILSEQ; - */ - ch = UNKNOWN_UNICODE; - } else { - if ( p[0] == 0xFC ) { - overlong = SDL_TRUE; - } - ch = (Uint32)(p[0] & 0x01); - left = 5; - } - } else if ( p[0] >= 0xF8 ) { - if ( (p[0] & 0xFC) != 0xF8 ) { - /* Skip illegal sequences - return SDL_ICONV_EILSEQ; - */ - ch = UNKNOWN_UNICODE; - } else { - if ( p[0] == 0xF8 ) { - overlong = SDL_TRUE; - } - ch = (Uint32)(p[0] & 0x03); - left = 4; - } - } else if ( p[0] >= 0xF0 ) { - if ( (p[0] & 0xF8) != 0xF0 ) { - /* Skip illegal sequences - return SDL_ICONV_EILSEQ; - */ - ch = UNKNOWN_UNICODE; - } else { - if ( p[0] == 0xF0 ) { - overlong = SDL_TRUE; - } - ch = (Uint32)(p[0] & 0x07); - left = 3; - } - } else if ( p[0] >= 0xE0 ) { - if ( (p[0] & 0xF0) != 0xE0 ) { - /* Skip illegal sequences - return SDL_ICONV_EILSEQ; - */ - ch = UNKNOWN_UNICODE; - } else { - if ( p[0] == 0xE0 ) { - overlong = SDL_TRUE; - } - ch = (Uint32)(p[0] & 0x0F); - left = 2; - } - } else if ( p[0] >= 0xC0 ) { - if ( (p[0] & 0xE0) != 0xC0 ) { - /* Skip illegal sequences - return SDL_ICONV_EILSEQ; - */ - ch = UNKNOWN_UNICODE; - } else { - if ( (p[0] & 0xCE) == 0xC0 ) { - overlong = SDL_TRUE; - } - ch = (Uint32)(p[0] & 0x1F); - left = 1; - } - } else { - if ( (p[0] & 0x80) != 0x00 ) { - /* Skip illegal sequences - return SDL_ICONV_EILSEQ; - */ - ch = UNKNOWN_UNICODE; - } else { - ch = (Uint32)p[0]; - } - } - ++src; - --srclen; - if ( srclen < left ) { - return SDL_ICONV_EINVAL; - } - while ( left-- ) { - ++p; - if ( (p[0] & 0xC0) != 0x80 ) { - /* Skip illegal sequences - return SDL_ICONV_EILSEQ; - */ - ch = UNKNOWN_UNICODE; - break; - } - ch <<= 6; - ch |= (p[0] & 0x3F); - ++src; - --srclen; - } - if ( overlong ) { - /* Potential security risk - return SDL_ICONV_EILSEQ; - */ - ch = UNKNOWN_UNICODE; - } - if ( (ch >= 0xD800 && ch <= 0xDFFF) || - (ch == 0xFFFE || ch == 0xFFFF) || - ch > 0x10FFFF ) { - /* Skip illegal sequences - return SDL_ICONV_EILSEQ; - */ - ch = UNKNOWN_UNICODE; - } - } - break; - case ENCODING_UTF16BE: /* RFC 2781 */ - { - Uint8 *p = (Uint8 *)src; - Uint16 W1, W2; - if ( srclen < 2 ) { - return SDL_ICONV_EINVAL; - } - W1 = ((Uint16)p[0] << 8) | - (Uint16)p[1]; - src += 2; - srclen -= 2; - if ( W1 < 0xD800 || W1 > 0xDFFF ) { - ch = (Uint32)W1; - break; - } - if ( W1 > 0xDBFF ) { - /* Skip illegal sequences - return SDL_ICONV_EILSEQ; - */ - ch = UNKNOWN_UNICODE; - break; - } - if ( srclen < 2 ) { - return SDL_ICONV_EINVAL; - } - p = (Uint8 *)src; - W2 = ((Uint16)p[0] << 8) | - (Uint16)p[1]; - src += 2; - srclen -= 2; - if ( W2 < 0xDC00 || W2 > 0xDFFF ) { - /* Skip illegal sequences - return SDL_ICONV_EILSEQ; - */ - ch = UNKNOWN_UNICODE; - break; - } - ch = (((Uint32)(W1 & 0x3FF) << 10) | - (Uint32)(W2 & 0x3FF)) + 0x10000; - } - break; - case ENCODING_UTF16LE: /* RFC 2781 */ - { - Uint8 *p = (Uint8 *)src; - Uint16 W1, W2; - if ( srclen < 2 ) { - return SDL_ICONV_EINVAL; - } - W1 = ((Uint16)p[1] << 8) | - (Uint16)p[0]; - src += 2; - srclen -= 2; - if ( W1 < 0xD800 || W1 > 0xDFFF ) { - ch = (Uint32)W1; - break; - } - if ( W1 > 0xDBFF ) { - /* Skip illegal sequences - return SDL_ICONV_EILSEQ; - */ - ch = UNKNOWN_UNICODE; - break; - } - if ( srclen < 2 ) { - return SDL_ICONV_EINVAL; - } - p = (Uint8 *)src; - W2 = ((Uint16)p[1] << 8) | - (Uint16)p[0]; - src += 2; - srclen -= 2; - if ( W2 < 0xDC00 || W2 > 0xDFFF ) { - /* Skip illegal sequences - return SDL_ICONV_EILSEQ; - */ - ch = UNKNOWN_UNICODE; - break; - } - ch = (((Uint32)(W1 & 0x3FF) << 10) | - (Uint32)(W2 & 0x3FF)) + 0x10000; - } - break; - case ENCODING_UTF32BE: - { - Uint8 *p = (Uint8 *)src; - if ( srclen < 4 ) { - return SDL_ICONV_EINVAL; - } - ch = ((Uint32)p[0] << 24) | - ((Uint32)p[1] << 16) | - ((Uint32)p[2] << 8) | - (Uint32)p[3]; - src += 4; - srclen -= 4; - } - break; - case ENCODING_UTF32LE: - { - Uint8 *p = (Uint8 *)src; - if ( srclen < 4 ) { - return SDL_ICONV_EINVAL; - } - ch = ((Uint32)p[3] << 24) | - ((Uint32)p[2] << 16) | - ((Uint32)p[1] << 8) | - (Uint32)p[0]; - src += 4; - srclen -= 4; - } - break; - case ENCODING_UCS2: - { - Uint16 *p = (Uint16 *)src; - if ( srclen < 2 ) { - return SDL_ICONV_EINVAL; - } - ch = *p; - src += 2; - srclen -= 2; - } - break; - case ENCODING_UCS4: - { - Uint32 *p = (Uint32 *)src; - if ( srclen < 4 ) { - return SDL_ICONV_EINVAL; - } - ch = *p; - src += 4; - srclen -= 4; - } - break; - } - - /* Encode a character */ - switch ( cd->dst_fmt ) { - case ENCODING_ASCII: - { - Uint8 *p = (Uint8 *)dst; - if ( dstlen < 1 ) { - return SDL_ICONV_E2BIG; - } - if ( ch > 0x7F ) { - *p = UNKNOWN_ASCII; - } else { - *p = (Uint8)ch; - } - ++dst; - --dstlen; - } - break; - case ENCODING_LATIN1: - { - Uint8 *p = (Uint8 *)dst; - if ( dstlen < 1 ) { - return SDL_ICONV_E2BIG; - } - if ( ch > 0xFF ) { - *p = UNKNOWN_ASCII; - } else { - *p = (Uint8)ch; - } - ++dst; - --dstlen; - } - break; - case ENCODING_UTF8: /* RFC 3629 */ - { - Uint8 *p = (Uint8 *)dst; - if ( ch > 0x10FFFF ) { - ch = UNKNOWN_UNICODE; - } - if ( ch <= 0x7F ) { - if ( dstlen < 1 ) { - return SDL_ICONV_E2BIG; - } - *p = (Uint8)ch; - ++dst; - --dstlen; - } else if ( ch <= 0x7FF ) { - if ( dstlen < 2 ) { - return SDL_ICONV_E2BIG; - } - p[0] = 0xC0 | (Uint8)((ch >> 6) & 0x1F); - p[1] = 0x80 | (Uint8)(ch & 0x3F); - dst += 2; - dstlen -= 2; - } else if ( ch <= 0xFFFF ) { - if ( dstlen < 3 ) { - return SDL_ICONV_E2BIG; - } - p[0] = 0xE0 | (Uint8)((ch >> 12) & 0x0F); - p[1] = 0x80 | (Uint8)((ch >> 6) & 0x3F); - p[2] = 0x80 | (Uint8)(ch & 0x3F); - dst += 3; - dstlen -= 3; - } else if ( ch <= 0x1FFFFF ) { - if ( dstlen < 4 ) { - return SDL_ICONV_E2BIG; - } - p[0] = 0xF0 | (Uint8)((ch >> 18) & 0x07); - p[1] = 0x80 | (Uint8)((ch >> 12) & 0x3F); - p[2] = 0x80 | (Uint8)((ch >> 6) & 0x3F); - p[3] = 0x80 | (Uint8)(ch & 0x3F); - dst += 4; - dstlen -= 4; - } else if ( ch <= 0x3FFFFFF ) { - if ( dstlen < 5 ) { - return SDL_ICONV_E2BIG; - } - p[0] = 0xF8 | (Uint8)((ch >> 24) & 0x03); - p[1] = 0x80 | (Uint8)((ch >> 18) & 0x3F); - p[2] = 0x80 | (Uint8)((ch >> 12) & 0x3F); - p[3] = 0x80 | (Uint8)((ch >> 6) & 0x3F); - p[4] = 0x80 | (Uint8)(ch & 0x3F); - dst += 5; - dstlen -= 5; - } else { - if ( dstlen < 6 ) { - return SDL_ICONV_E2BIG; - } - p[0] = 0xFC | (Uint8)((ch >> 30) & 0x01); - p[1] = 0x80 | (Uint8)((ch >> 24) & 0x3F); - p[2] = 0x80 | (Uint8)((ch >> 18) & 0x3F); - p[3] = 0x80 | (Uint8)((ch >> 12) & 0x3F); - p[4] = 0x80 | (Uint8)((ch >> 6) & 0x3F); - p[5] = 0x80 | (Uint8)(ch & 0x3F); - dst += 6; - dstlen -= 6; - } - } - break; - case ENCODING_UTF16BE: /* RFC 2781 */ - { - Uint8 *p = (Uint8 *)dst; - if ( ch > 0x10FFFF ) { - ch = UNKNOWN_UNICODE; - } - if ( ch < 0x10000 ) { - if ( dstlen < 2 ) { - return SDL_ICONV_E2BIG; - } - p[0] = (Uint8)(ch >> 8); - p[1] = (Uint8)ch; - dst += 2; - dstlen -= 2; - } else { - Uint16 W1, W2; - if ( dstlen < 4 ) { - return SDL_ICONV_E2BIG; - } - ch = ch - 0x10000; - W1 = 0xD800 | (Uint16)((ch >> 10) & 0x3FF); - W2 = 0xDC00 | (Uint16)(ch & 0x3FF); - p[0] = (Uint8)(W1 >> 8); - p[1] = (Uint8)W1; - p[2] = (Uint8)(W2 >> 8); - p[3] = (Uint8)W2; - dst += 4; - dstlen -= 4; - } - } - break; - case ENCODING_UTF16LE: /* RFC 2781 */ - { - Uint8 *p = (Uint8 *)dst; - if ( ch > 0x10FFFF ) { - ch = UNKNOWN_UNICODE; - } - if ( ch < 0x10000 ) { - if ( dstlen < 2 ) { - return SDL_ICONV_E2BIG; - } - p[1] = (Uint8)(ch >> 8); - p[0] = (Uint8)ch; - dst += 2; - dstlen -= 2; - } else { - Uint16 W1, W2; - if ( dstlen < 4 ) { - return SDL_ICONV_E2BIG; - } - ch = ch - 0x10000; - W1 = 0xD800 | (Uint16)((ch >> 10) & 0x3FF); - W2 = 0xDC00 | (Uint16)(ch & 0x3FF); - p[1] = (Uint8)(W1 >> 8); - p[0] = (Uint8)W1; - p[3] = (Uint8)(W2 >> 8); - p[2] = (Uint8)W2; - dst += 4; - dstlen -= 4; - } - } - break; - case ENCODING_UTF32BE: - { - Uint8 *p = (Uint8 *)dst; - if ( ch > 0x10FFFF ) { - ch = UNKNOWN_UNICODE; - } - if ( dstlen < 4 ) { - return SDL_ICONV_E2BIG; - } - p[0] = (Uint8)(ch >> 24); - p[1] = (Uint8)(ch >> 16); - p[2] = (Uint8)(ch >> 8); - p[3] = (Uint8)ch; - dst += 4; - dstlen -= 4; - } - break; - case ENCODING_UTF32LE: - { - Uint8 *p = (Uint8 *)dst; - if ( ch > 0x10FFFF ) { - ch = UNKNOWN_UNICODE; - } - if ( dstlen < 4 ) { - return SDL_ICONV_E2BIG; - } - p[3] = (Uint8)(ch >> 24); - p[2] = (Uint8)(ch >> 16); - p[1] = (Uint8)(ch >> 8); - p[0] = (Uint8)ch; - dst += 4; - dstlen -= 4; - } - break; - case ENCODING_UCS2: - { - Uint16 *p = (Uint16 *)dst; - if ( ch > 0xFFFF ) { - ch = UNKNOWN_UNICODE; - } - if ( dstlen < 2 ) { - return SDL_ICONV_E2BIG; - } - *p = (Uint16)ch; - dst += 2; - dstlen -= 2; - } - break; - case ENCODING_UCS4: - { - Uint32 *p = (Uint32 *)dst; - if ( ch > 0x7FFFFFFF ) { - ch = UNKNOWN_UNICODE; - } - if ( dstlen < 4 ) { - return SDL_ICONV_E2BIG; - } - *p = ch; - dst += 4; - dstlen -= 4; - } - break; - } - - /* Update state */ - *inbuf = src; - *inbytesleft = srclen; - *outbuf = dst; - *outbytesleft = dstlen; - ++total; - } - return total; -} - -int SDL_iconv_close(SDL_iconv_t cd) -{ - if ( cd && cd != (SDL_iconv_t)-1 ) { - SDL_free(cd); - } - return 0; -} - -#endif /* !HAVE_ICONV */ - -char *SDL_iconv_string(const char *tocode, const char *fromcode, const char *inbuf, size_t inbytesleft) -{ - SDL_iconv_t cd; - char *string; - size_t stringsize; - char *outbuf; - size_t outbytesleft; - size_t retCode = 0; - - cd = SDL_iconv_open(tocode, fromcode); - if ( cd == (SDL_iconv_t)-1 ) { - /* See if we can recover here (fixes iconv on Solaris 11) */ - if ( !tocode || !*tocode ) { - tocode = "UTF-8"; - } - if ( !fromcode || !*fromcode ) { - tocode = "UTF-8"; - } - cd = SDL_iconv_open(tocode, fromcode); - } - if ( cd == (SDL_iconv_t)-1 ) { - return NULL; - } - - stringsize = inbytesleft > 4 ? inbytesleft : 4; - string = SDL_malloc(stringsize); - if ( !string ) { - SDL_iconv_close(cd); - return NULL; - } - outbuf = string; - outbytesleft = stringsize; - SDL_memset(outbuf, 0, 4); - - while ( inbytesleft > 0 ) { - retCode = SDL_iconv(cd, &inbuf, &inbytesleft, &outbuf, &outbytesleft); - switch (retCode) { - case SDL_ICONV_E2BIG: - { - char *oldstring = string; - stringsize *= 2; - string = SDL_realloc(string, stringsize); - if ( !string ) { - SDL_iconv_close(cd); - return NULL; - } - outbuf = string + (outbuf - oldstring); - outbytesleft = stringsize - (outbuf - string); - SDL_memset(outbuf, 0, 4); - } - break; - case SDL_ICONV_EILSEQ: - /* Try skipping some input data - not perfect, but... */ - ++inbuf; - --inbytesleft; - break; - case SDL_ICONV_EINVAL: - case SDL_ICONV_ERROR: - /* We can't continue... */ - inbytesleft = 0; - break; - } - } - SDL_iconv_close(cd); - - return string; -} |