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/* Emulate getcwd using getwd.
This function is in the public domain. */
/*
NAME
getcwd -- get absolute pathname for current working directory
SYNOPSIS
char *getcwd (char pathname[len], len)
DESCRIPTION
Copy the absolute pathname for the current working directory into
the supplied buffer and return a pointer to the buffer. If the
current directory's path doesn't fit in LEN characters, the result
is NULL and errno is set.
If pathname is a null pointer, getcwd() will obtain size bytes of
space using malloc.
BUGS
Emulated via the getwd() call, which is reasonable for most
systems that do not have getcwd().
*/
#include "config.h"
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#include <errno.h>
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
extern char *getwd ();
extern int errno;
#ifndef MAXPATHLEN
#define MAXPATHLEN 1024
#endif
char *
getcwd (buf, len)
char *buf;
int len;
{
char ourbuf[MAXPATHLEN];
char *result;
result = getwd (ourbuf);
if (result) {
if (strlen (ourbuf) >= len) {
errno = ERANGE;
return 0;
}
if (!buf) {
buf = (char*)malloc(len);
if (!buf) {
errno = ENOMEM;
return 0;
}
}
strcpy (buf, ourbuf);
}
return buf;
}
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