added stub implementations for strerror_r and strdup

1 files changed, 70 insertions, 0 deletions

diff --git a/src/port/string.c b/src/port/string.c
new file mode 100644
index 0000000..a87a1a2
--- /dev/null
+++ b/src/port/string.c
@@ -0,0 +1,70 @@
+/*
+    Copyright (C) 2008 Andreas Baumann <abaumann@yahoo.com>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program 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 General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "port/string.h"
+
+/**
+ * strdup is not always part of the C library or they need insane flags to
+ * be set which would enable too many non-standard things.
+ */
+
+#if !defined HAVE_STRDUP
+
+#include <stdlib.h>		/* for malloc, NULL */
+
+char *wolf_strdup( const char *s ) {
+	char *d;
+	d = (char *)malloc( strlen( s ) + 1 );
+	if( d == NULL ) return NULL;
+	strcpy( d, s );
+	return d;
+}
+
+#else
+
+extern int dummy;		/* prevent ISO C forbids an empty source file' warning */
+
+#endif /* !defined HAVE_STRDUP */
+
+/**
+ * strerror_r exists in various fassions (XSI and GNU flavour in glibc). We stick to
+ * the API of POSIX1 of course..
+ */
+
+#if !defined HAVE_STRERROR_R
+
+#include "port/stdio.h"		/* for snprintf */
+#include <sys/types.h>		/* for size_t */
+#include <errno.h>		/* for errno */
+
+int wolf_strerror_r( int num, char *buf, size_t buflen ) {
+	const char *msg;
+	int len;
+
+	msg = strerror( num );
+	if( msg == NULL ) {
+		len = snprintf( buf, buflen, "Unknown error %d", num );
+		errno = EINVAL;
+		return -1;
+	}
+
+	strncpy( buf, msg, buflen-1 );
+	errno = 0;
+	return 0;
+}
+
+#endif /* !defined HAVE_STRERROR_R */