Add isblank() function for systems without it. Needed for POSIX

character class matching in fnmatch.c and glob.c.

diff --git a/isblank.c b/isblank.c
new file mode 100644 (file)
index 0000000..67c64f9
--- /dev/null
+++ b/isblank.c
@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2008 Todd C. Miller <Todd.Miller@courtesan.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, 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.
+ */
+
+#include <config.h>
+#include <compat.h>
+
+#ifndef lint
+__unused static const char rcsid[] = "$Sudo$";
+#endif /* lint */
+
+#undef isblank
+int
+isblank(ch)
+    int ch;
+{
+    return(ch == ' ' || ch == '\t');
+}