libmpg123 1.9.0

git-svn-id: svn://kolibrios.org@1905 a494cfbc-eb01-0410-851d-a64ba20cac60

programs/develop/libraries/libmpg123/compat.c

@@ -0,0 +1,41 @@
+/*
+	compat: Some compatibility functions. Basic standard C stuff, that may barely be above/around C89.
+
+	The mpg123 code is determined to keep it's legacy. A legacy of old, old UNIX.
+
+	copyright 2007-8 by the mpg123 project - free software under the terms of the LGPL 2.1
+	see COPYING and AUTHORS files in distribution or http://mpg123.org
+	initially written by Thomas Orgis
+*/
+
+#include "config.h"
+#include "compat.h"
+
+/* A safe realloc also for very old systems where realloc(NULL, size) returns NULL. */
+void *safe_realloc(void *ptr, size_t size)
+{
+	if(ptr == NULL) return malloc(size);
+	else return realloc(ptr, size);
+}
+
+#ifndef HAVE_STRERROR
+const char *strerror(int errnum)
+{
+	extern int sys_nerr;
+	extern char *sys_errlist[];
+
+	return (errnum < sys_nerr) ?  sys_errlist[errnum]  :  "";
+}
+#endif
+
+#ifndef HAVE_STRDUP
+char *strdup(const char *src)
+{
+	char *dest;
+
+	if (!(dest = (char *) malloc(strlen(src)+1)))
+	return NULL;
+	else
+	return strcpy(dest, src);
+}
+#endif