diff options
author | 2016-02-27 16:28:05 +0100 | |
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committer | 2016-02-27 16:53:49 +0100 | |
commit | cf6dc7d370407914020f3e623719f09c8668c692 (patch) | |
tree | 46b3416d091b4c09b50fba7ffcbd310aed032cc8 /3rdparty/SDL2/src/SDL_error.c | |
parent | 64135e73f973d9b95beb0c60b65feb34fbfec64a (diff) |
Placed SDL2 source since we need it on some platforms (nw)
Diffstat (limited to '3rdparty/SDL2/src/SDL_error.c')
-rw-r--r-- | 3rdparty/SDL2/src/SDL_error.c | 275 |
1 files changed, 275 insertions, 0 deletions
diff --git a/3rdparty/SDL2/src/SDL_error.c b/3rdparty/SDL2/src/SDL_error.c new file mode 100644 index 00000000000..ace5cc3972c --- /dev/null +++ b/3rdparty/SDL2/src/SDL_error.c @@ -0,0 +1,275 @@ +/* + 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. +*/ +#include "./SDL_internal.h" + +/* Simple error handling in SDL */ + +#include "SDL_log.h" +#include "SDL_error.h" +#include "SDL_error_c.h" + + +/* Routine to get the thread-specific error variable */ +#if SDL_THREADS_DISABLED +/* 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 */ + +int +SDL_SetError(SDL_PRINTF_FORMAT_STRING const char *fmt, ...) +{ + va_list ap; + SDL_error *error; + + /* Ignore call if invalid format pointer was passed */ + if (fmt == NULL) return -1; + + /* 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 */ + SDL_LogDebug(SDL_LOG_CATEGORY_ERROR, "%s", SDL_GetError()); + + return -1; +} + +/* This function has a bit more overhead than most error functions + so that it supports internationalization and thread-safe errors. +*/ +static char * +SDL_GetErrorMsg(char *errstr, 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); + if (len > 0) { + msg += len; + maxlen -= len; + } + break; + + case 'f': + len = + SDL_snprintf(msg, maxlen, tmp, + error->args[argi++].value_f); + if (len > 0) { + msg += len; + maxlen -= len; + } + break; + + case 'p': + len = + SDL_snprintf(msg, maxlen, tmp, + error->args[argi++].value_ptr); + if (len > 0) { + msg += len; + maxlen -= len; + } + break; + + case 's': + len = + SDL_snprintf(msg, maxlen, tmp, + SDL_LookupString(error->args[argi++]. + buf)); + if (len > 0) { + msg += len; + maxlen -= len; + } + break; + + } + } else { + *msg++ = *fmt++; + maxlen -= 1; + } + } + + /* slide back if we've overshot the end of our buffer. */ + if (maxlen < 0) { + msg -= (-maxlen) + 1; + } + + *msg = 0; /* NULL terminate the string */ + } + return (errstr); +} + +/* Available for backwards compatibility */ +const char * +SDL_GetError(void) +{ + static char errmsg[SDL_ERRBUFIZE]; + + return SDL_GetErrorMsg(errmsg, SDL_ERRBUFIZE); +} + +void +SDL_ClearError(void) +{ + SDL_error *error; + + error = SDL_GetErrBuf(); + error->error = 0; +} + +/* Very common errors go here */ +int +SDL_Error(SDL_errorcode code) +{ + switch (code) { + case SDL_ENOMEM: + return SDL_SetError("Out of memory"); + case SDL_EFREAD: + return SDL_SetError("Error reading from datastream"); + case SDL_EFWRITE: + return SDL_SetError("Error writing to datastream"); + case SDL_EFSEEK: + return SDL_SetError("Error seeking in datastream"); + case SDL_UNSUPPORTED: + return SDL_SetError("That operation is not supported"); + default: + return SDL_SetError("Unknown SDL error"); + } +} + +#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 + +/* vi: set ts=4 sw=4 expandtab: */ |