Import SDL release-1.2.15

Change-Id: I505c4aea24325cad475f217db5589814b4c75dbf

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