Mercurial > sdl-ios-xcode
view src/SDL_error.c @ 4207:a673f44949d6 SDL-1.2
Fixed bug #562
this patch by Diego Pettenò <flameeyes@gentoo.org> for SDL-1.2:
The attached patch applies over latest ~arch SDL version, and allows to use the
xinerama support to launch an application full screened on the head "0".
The SDL_VIDEO_FULLSCREEN_HEAD environment variable sets the head on which the
full screen will be displayed, but if you set it to 0, the code simply ignores
it as unset. My patch changes the unset value to -1, so that the 0 value can be
used correctly. Without this, trying to get fullscreen on head 0 would get the
same result than not having xinerama enabled at all.
http://sources.gentoo.org/media-libs/libsdl/files/libsdl-1.2.11-xinerama-head-0.patch
SDL-1.3 doesnt seem to have any code like this, but it's still good for SDL-1.2
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Mon, 21 Sep 2009 07:20:51 +0000 |
parents | a1b03ba2fcd0 |
children |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2009 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" /* Simple error handling in SDL */ #include "SDL_error.h" #include "SDL_error_c.h" /* Routine to get the thread-specific error variable */ #if SDL_THREADS_DISABLED /* The SDL_arraysize(The ),default (non-thread-safe) global error variable */ static SDL_error SDL_global_error; #define SDL_GetErrBuf() (&SDL_global_error) #else extern SDL_error *SDL_GetErrBuf(void); #endif /* SDL_THREADS_DISABLED */ #define SDL_ERRBUFIZE 1024 /* Private functions */ static const char *SDL_LookupString(const char *key) { /* FIXME: Add code to lookup key in language string hash-table */ return key; } /* Public functions */ void SDL_SetError (const char *fmt, ...) { va_list ap; SDL_error *error; /* Copy in the key, mark error as valid */ error = SDL_GetErrBuf(); error->error = 1; SDL_strlcpy((char *)error->key, fmt, sizeof(error->key)); va_start(ap, fmt); error->argc = 0; while ( *fmt ) { if ( *fmt++ == '%' ) { while ( *fmt == '.' || (*fmt >= '0' && *fmt <= '9') ) { ++fmt; } switch (*fmt++) { case 0: /* Malformed format string.. */ --fmt; break; case 'c': case 'i': case 'd': case 'u': case 'o': case 'x': case 'X': error->args[error->argc++].value_i = va_arg(ap, int); break; case 'f': error->args[error->argc++].value_f = va_arg(ap, double); break; case 'p': error->args[error->argc++].value_ptr = va_arg(ap, void *); break; case 's': { int i = error->argc; const char *str = va_arg(ap, const char *); if (str == NULL) str = "(null)"; SDL_strlcpy((char *)error->args[i].buf, str, ERR_MAX_STRLEN); error->argc++; } break; default: break; } if ( error->argc >= ERR_MAX_ARGS ) { break; } } } va_end(ap); /* If we are in debug mode, print out an error message */ #ifdef DEBUG_ERROR fprintf(stderr, "SDL_SetError: %s\n", SDL_GetError()); #endif } /* This function has a bit more overhead than most error functions so that it supports internationalization and thread-safe errors. */ char *SDL_GetErrorMsg(char *errstr, unsigned int maxlen) { SDL_error *error; /* Clear the error string */ *errstr = '\0'; --maxlen; /* Get the thread-safe error, and print it out */ error = SDL_GetErrBuf(); if ( error->error ) { const char *fmt; char *msg = errstr; int len; int argi; fmt = SDL_LookupString(error->key); argi = 0; while ( *fmt && (maxlen > 0) ) { if ( *fmt == '%' ) { char tmp[32], *spot = tmp; *spot++ = *fmt++; while ( (*fmt == '.' || (*fmt >= '0' && *fmt <= '9')) && spot < (tmp+SDL_arraysize(tmp)-2) ) { *spot++ = *fmt++; } *spot++ = *fmt++; *spot++ = '\0'; switch (spot[-2]) { case '%': *msg++ = '%'; maxlen -= 1; break; case 'c': case 'i': case 'd': case 'u': case 'o': case 'x': case 'X': len = SDL_snprintf(msg, maxlen, tmp, error->args[argi++].value_i); msg += len; maxlen -= len; break; case 'f': len = SDL_snprintf(msg, maxlen, tmp, error->args[argi++].value_f); msg += len; maxlen -= len; break; case 'p': len = SDL_snprintf(msg, maxlen, tmp, error->args[argi++].value_ptr); msg += len; maxlen -= len; break; case 's': len = SDL_snprintf(msg, maxlen, tmp, SDL_LookupString(error->args[argi++].buf)); msg += len; maxlen -= len; break; } } else { *msg++ = *fmt++; maxlen -= 1; } } *msg = 0; /* NULL terminate the string */ } return(errstr); } /* Available for backwards compatibility */ char *SDL_GetError (void) { static char errmsg[SDL_ERRBUFIZE]; return((char *)SDL_GetErrorMsg(errmsg, SDL_ERRBUFIZE)); } void SDL_ClearError(void) { SDL_error *error; error = SDL_GetErrBuf(); error->error = 0; } /* Very common errors go here */ void SDL_Error(SDL_errorcode code) { switch (code) { case SDL_ENOMEM: SDL_SetError("Out of memory"); break; case SDL_EFREAD: SDL_SetError("Error reading from datastream"); break; case SDL_EFWRITE: SDL_SetError("Error writing to datastream"); break; case SDL_EFSEEK: SDL_SetError("Error seeking in datastream"); break; default: SDL_SetError("Unknown SDL error"); break; } } #ifdef TEST_ERROR int main(int argc, char *argv[]) { char buffer[BUFSIZ+1]; SDL_SetError("Hi there!"); printf("Error 1: %s\n", SDL_GetError()); SDL_ClearError(); SDL_memset(buffer, '1', BUFSIZ); buffer[BUFSIZ] = 0; SDL_SetError("This is the error: %s (%f)", buffer, 1.0); printf("Error 2: %s\n", SDL_GetError()); exit(0); } #endif