diff options
Diffstat (limited to 'distrib/sdl-1.2.15/src/SDL_error.c')
| -rw-r--r-- | distrib/sdl-1.2.15/src/SDL_error.c | 238 |
1 files changed, 238 insertions, 0 deletions
diff --git a/distrib/sdl-1.2.15/src/SDL_error.c b/distrib/sdl-1.2.15/src/SDL_error.c new file mode 100644 index 0000000..0f06bd5 --- /dev/null +++ b/distrib/sdl-1.2.15/src/SDL_error.c @@ -0,0 +1,238 @@ +/* + SDL - Simple DirectMedia Layer + Copyright (C) 1997-2012 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 |