diff options
Diffstat (limited to '3rdparty/SDL2/src/stdlib/SDL_iconv.c')
-rw-r--r-- | 3rdparty/SDL2/src/stdlib/SDL_iconv.c | 931 |
1 files changed, 0 insertions, 931 deletions
diff --git a/3rdparty/SDL2/src/stdlib/SDL_iconv.c b/3rdparty/SDL2/src/stdlib/SDL_iconv.c deleted file mode 100644 index 34bcd843172..00000000000 --- a/3rdparty/SDL2/src/stdlib/SDL_iconv.c +++ /dev/null @@ -1,931 +0,0 @@ -/* - Simple DirectMedia Layer - Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org> - - This software is provided 'as-is', without any express or implied - warranty. In no event will the authors be held liable for any damages - arising from the use of this software. - - Permission is granted to anyone to use this software for any purpose, - including commercial applications, and to alter it and redistribute it - freely, subject to the following restrictions: - - 1. The origin of this software must not be misrepresented; you must not - claim that you wrote the original software. If you use this software - in a product, an acknowledgment in the product documentation would be - appreciated but is not required. - 2. Altered source versions must be plainly marked as such, and must not be - misrepresented as being the original software. - 3. This notice may not be removed or altered from any source distribution. -*/ - -#if defined(__clang_analyzer__) && !defined(SDL_DISABLE_ANALYZE_MACROS) -#define SDL_DISABLE_ANALYZE_MACROS 1 -#endif - -#include "../SDL_internal.h" - -/* This file contains portable iconv functions for SDL */ - -#include "SDL_stdinc.h" -#include "SDL_endian.h" - -#if defined(HAVE_ICONV) && defined(HAVE_ICONV_H) -#include <iconv.h> - -/* 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(__APPLE__) || \ - (defined(__GLIBC__) && ((__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)) || \ - (defined(_NEWLIB_VERSION))) -#define ICONV_INBUF_NONCONST -#endif - -#include <errno.h> - -SDL_COMPILE_TIME_ASSERT(iconv_t, sizeof (iconv_t) <= sizeof (SDL_iconv_t)); - -SDL_iconv_t -SDL_iconv_open(const char *tocode, const char *fromcode) -{ - return (SDL_iconv_t) ((size_t) iconv_open(tocode, fromcode)); -} - -int -SDL_iconv_close(SDL_iconv_t cd) -{ - return iconv_close((iconv_t) ((size_t) cd)); -} - -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((iconv_t) ((size_t) cd), (char **) inbuf, inbytesleft, outbuf, outbytesleft); -#else - retCode = iconv((iconv_t) ((size_t) 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_UCS2BE, - ENCODING_UCS2LE, - ENCODING_UCS4BE, - ENCODING_UCS4LE, -}; -#if SDL_BYTEORDER == SDL_BIG_ENDIAN -#define ENCODING_UTF16NATIVE ENCODING_UTF16BE -#define ENCODING_UTF32NATIVE ENCODING_UTF32BE -#define ENCODING_UCS2NATIVE ENCODING_UCS2BE -#define ENCODING_UCS4NATIVE ENCODING_UCS4BE -#else -#define ENCODING_UTF16NATIVE ENCODING_UTF16LE -#define ENCODING_UTF32NATIVE ENCODING_UTF32LE -#define ENCODING_UCS2NATIVE ENCODING_UCS2LE -#define ENCODING_UCS4NATIVE ENCODING_UCS4LE -#endif - -struct _SDL_iconv_t -{ - int src_fmt; - int dst_fmt; -}; - -static struct -{ - const char *name; - int format; -} encodings[] = { -/* *INDENT-OFF* */ - { "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_UCS2BE }, - { "UCS-2", ENCODING_UCS2BE }, - { "UCS-2LE", ENCODING_UCS2LE }, - { "UCS-2BE", ENCODING_UCS2BE }, - { "UCS-2-INTERNAL", ENCODING_UCS2NATIVE }, - { "UCS4", ENCODING_UCS4BE }, - { "UCS-4", ENCODING_UCS4BE }, - { "UCS-4LE", ENCODING_UCS4LE }, - { "UCS-4BE", ENCODING_UCS4BE }, - { "UCS-4-INTERNAL", ENCODING_UCS4NATIVE }, -/* *INDENT-ON* */ -}; - -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 && srclen > 1 && (p[1] & 0xFC) == 0x80) { - 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 && srclen > 1 && (p[1] & 0xF8) == 0x80) { - 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 && srclen > 1 && (p[1] & 0xF0) == 0x80) { - 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 && srclen > 1 && (p[1] & 0xE0) == 0x80) { - 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] & 0xDE) == 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_UCS2LE: - { - Uint8 *p = (Uint8 *) src; - if (srclen < 2) { - return SDL_ICONV_EINVAL; - } - ch = ((Uint32) p[1] << 8) | (Uint32) p[0]; - src += 2; - srclen -= 2; - } - break; - case ENCODING_UCS2BE: - { - Uint8 *p = (Uint8 *) src; - if (srclen < 2) { - return SDL_ICONV_EINVAL; - } - ch = ((Uint32) p[0] << 8) | (Uint32) p[1]; - src += 2; - srclen -= 2; - } - break; - case ENCODING_UCS4BE: - 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_UCS4LE: - 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; - } - - /* 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_UCS2BE: - { - Uint8 *p = (Uint8 *) dst; - if (ch > 0xFFFF) { - ch = UNKNOWN_UNICODE; - } - if (dstlen < 2) { - return SDL_ICONV_E2BIG; - } - p[0] = (Uint8) (ch >> 8); - p[1] = (Uint8) ch; - dst += 2; - dstlen -= 2; - } - break; - case ENCODING_UCS2LE: - { - Uint8 *p = (Uint8 *) dst; - if (ch > 0xFFFF) { - ch = UNKNOWN_UNICODE; - } - if (dstlen < 2) { - return SDL_ICONV_E2BIG; - } - p[1] = (Uint8) (ch >> 8); - p[0] = (Uint8) ch; - dst += 2; - dstlen -= 2; - } - break; - case ENCODING_UTF32BE: - if (ch > 0x10FFFF) { - ch = UNKNOWN_UNICODE; - } - case ENCODING_UCS4BE: - if (ch > 0x7FFFFFFF) { - ch = UNKNOWN_UNICODE; - } - { - Uint8 *p = (Uint8 *) dst; - 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: - if (ch > 0x10FFFF) { - ch = UNKNOWN_UNICODE; - } - case ENCODING_UCS4LE: - if (ch > 0x7FFFFFFF) { - ch = UNKNOWN_UNICODE; - } - { - Uint8 *p = (Uint8 *) dst; - 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; - } - - /* Update state */ - *inbuf = src; - *inbytesleft = srclen; - *outbuf = dst; - *outbytesleft = dstlen; - ++total; - } - return total; -} - -int -SDL_iconv_close(SDL_iconv_t cd) -{ - if (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) { - fromcode = "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; -} - -/* vi: set ts=4 sw=4 expandtab: */ |