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Diffstat (limited to '3rdparty/SDL2/src/stdlib/SDL_iconv.c')
-rw-r--r--3rdparty/SDL2/src/stdlib/SDL_iconv.c930
1 files changed, 930 insertions, 0 deletions
diff --git a/3rdparty/SDL2/src/stdlib/SDL_iconv.c b/3rdparty/SDL2/src/stdlib/SDL_iconv.c
new file mode 100644
index 00000000000..8f040373405
--- /dev/null
+++ b/3rdparty/SDL2/src/stdlib/SDL_iconv.c
@@ -0,0 +1,930 @@
+/*
+ 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"
+
+#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(__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: */