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comparison src/stdlib/SDL_iconv.c @ 3987:00486a9c2893 SDL-1.2

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iconv() doesn't write to the data, just make compilers happy
author Sam Lantinga <slouken@libsdl.org>
date Thu, 28 Jun 2007 08:33:59 +0000
parents 4f73308bbb32
children 6a4f3a32c2e6
comparison
equal deleted inserted replaced
3986:4f73308bbb32 3987:00486a9c2893
25 25
26 #include "SDL_stdinc.h" 26 #include "SDL_stdinc.h"
27 #include "SDL_endian.h" 27 #include "SDL_endian.h"
28 28
29 #ifdef HAVE_ICONV 29 #ifdef HAVE_ICONV
30
31 /* Depending on which standard the iconv() was implemented with,
32 iconv() may or may not use const char ** for the inbuf param.
33 If we get this wrong, it's just a warning, so no big deal.
34 */
35 #if defined(_XGP6) || \
36 defined(__GLIBC__) && ((__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2))
37 #define ICONV_INBUF_NONCONST
38 #endif
30 39
31 #include <errno.h> 40 #include <errno.h>
32 41
33 size_t SDL_iconv(SDL_iconv_t cd, 42 size_t SDL_iconv(SDL_iconv_t cd,
34 const char **inbuf, size_t *inbytesleft, 43 const char **inbuf, size_t *inbytesleft,
35 char **outbuf, size_t *outbytesleft) 44 char **outbuf, size_t *outbytesleft)
36 { 45 {
37 size_t retCode; 46 size_t retCode;
38 #ifdef ICONV_REALLY_MODIFIES_INBUF 47 #ifdef ICONV_INBUF_NONCONST
39 if ( inbuf && *inbuf && inbytesleft ) { 48 retCode = iconv(cd, (char **)inbuf, inbytesleft, outbuf, outbytesleft);
40 char *tmp = SDL_stack_alloc(char, *inbytesleft);
41 char *ptr = tmp;
42 SDL_memcpy(tmp, inbuf, *inbytesleft);
43 retCode = iconv(cd, &ptr, inbytesleft, outbuf, outbytesleft);
44 inbuf += (ptr - tmp);
45 SDL_stack_free(tmp);
46 } else {
47 retCode = iconv(cd, NULL, inbytesleft, outbuf, outbytesleft);
48 }
49 #else 49 #else
50 retCode = iconv(cd, (char **)inbuf, inbytesleft, outbuf, outbytesleft); 50 retCode = iconv(cd, inbuf, inbytesleft, outbuf, outbytesleft);
51 #endif 51 #endif
52 if ( retCode == (size_t)-1 ) { 52 if ( retCode == (size_t)-1 ) {
53 switch(errno) { 53 switch(errno) {
54 case E2BIG: 54 case E2BIG:
55 return SDL_ICONV_E2BIG; 55 return SDL_ICONV_E2BIG;