1 files changed, 102 insertions, 0 deletions
diff --git a/src/getcwd.c b/src/getcwd.c
new file mode 100644
index 0000000..3de6291
--- /dev/null
+++ b/src/getcwd.c
@@ -0,0 +1,102 @@
+/***********************************************************
+Copyright 1991 by Stichting Mathematisch Centrum, Amsterdam, The
+Netherlands.
+
+ All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation, and that the names of Stichting Mathematisch
+Centrum or CWI not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior permission.
+
+STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
+THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
+FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+******************************************************************/
+
+/* Two PD getcwd() implementations.
+ Author: Guido van Rossum, CWI Amsterdam, Jan 1991, <[email protected]>. */
+
+/* #define NO_GETWD /* Turn this on to popen pwd instead of calling getwd() */
+
+#include <stdio.h>
+#include <errno.h>
+
+extern int errno;
+
+#ifndef NO_GETWD
+
+/* Default: Version for BSD systems -- use getwd() */
+
+#include "sys/param.h"
+
+extern char *getwd();
+
+char *
+getcwd(buf, size)
+ char *buf;
+ int size;
+{
+ char localbuf[MAXPATHLEN+1];
+ char *ret;
+
+ if (size <= 0) {
+ errno = EINVAL;
+ return NULL;
+ }
+ ret = getwd(localbuf);
+ if (ret != NULL && strlen(localbuf) >= size) {
+ errno = ERANGE;
+ return NULL;
+ }
+ if (ret == NULL) {
+ errno = EACCES; /* Most likely error */
+ return NULL;
+ }
+ strncpy(buf, localbuf, size);
+ return buf;
+}
+
+#else
+
+/* NO_GETWD defined: Version for backward UNIXes -- popen /bin/pwd */
+
+#define PWD_CMD "/bin/pwd"
+
+char *
+getcwd(buf, size)
+ char *buf;
+ int size;
+{
+ FILE *fp;
+ char *p;
+ int sts;
+ if (size <= 0) {
+ errno = EINVAL;
+ return NULL;
+ }
+ if ((fp = popen(PWD_CMD, "r")) == NULL)
+ return NULL;
+ if (fgets(buf, size, fp) == NULL || (sts = pclose(fp)) != 0) {
+ errno = EACCES; /* Most likely error */
+ return NULL;
+ }
+ for (p = buf; *p != '\n'; p++) {
+ if (*p == '\0') {
+ errno = ERANGE;
+ return NULL;
+ }
+ }
+ *p = '\0';
+ return buf;
+}
+
+#endif