1 files changed, 48 insertions, 0 deletions
diff --git a/src/wchar/wcscspn.c b/src/wchar/wcscspn.c
new file mode 100644
index 0000000..f32af00
--- /dev/null
+++ b/src/wchar/wcscspn.c
@@ -0,0 +1,48 @@
+/**
+ * slibc — Yet another C library
+ * Copyright © 2015  Mattias Andrée (maandree@member.fsf.org)
+ * 
+ * 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 <wchar.h>
+
+
+# pragma GCC diagnostic ignored "-Wdiscarded-qualifiers"
+
+
+
+/**
+ * Returns length of the initial substring
+ * that consists entirely of the complement
+ * of a set of specified wide characters.
+ * 
+ * @param   string   The string.
+ * @param   stopset  Characters disallowed in the substring.
+ * @return           The length of the substring.
+ */
+size_t wcscspn(const wchar_t* string, const wchar_t* stopset)
+{
+  size_t i, end = wcslen(string);
+  wchar_t* s;
+  wchar_t c;
+  while ((c = *stopset++))
+    for (i = 0, s = string; *s && (i < end); i++, s++)
+      if (*s == c)
+	{
+	  end = (size_t)(s - string);
+	  break;
+	}
+  return end;
+}
+