/*

compat: Some compatibility functions (basic memory and string stuff)

The mpg123 code is determined to keep it's legacy. A legacy of old, old UNIX.

So anything possibly somewhat advanced should be considered to be put here, with proper #ifdef;-)

copyright 2007-2016 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, Windows Unicode stuff by JonY.

*/

#include "compat.h"

#include "debug.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

char* compat_strdup(const char *src)

{

char *dest = NULL;

if(src)

{

size_t len;

len = strlen(src)+1;

if((dest = malloc(len)))

memcpy(dest, src, len);

}

return dest;

}