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-rw-r--r--REORG.TODO/wcsmbs/wcsspn.c47
1 files changed, 47 insertions, 0 deletions
diff --git a/REORG.TODO/wcsmbs/wcsspn.c b/REORG.TODO/wcsmbs/wcsspn.c
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+++ b/REORG.TODO/wcsmbs/wcsspn.c
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+/* Copyright (C) 1995-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <wchar.h>
+
+#ifdef WCSSPN
+# define wcsspn WCSSPN
+#endif
+
+/* Return the length of the maximum initial segment
+   of WCS which contains only wide-characters in ACCEPT.  */
+size_t
+wcsspn (const wchar_t *wcs, const wchar_t *accept)
+{
+  const wchar_t *p;
+  const wchar_t *a;
+  size_t count = 0;
+
+  for (p = wcs; *p != L'\0'; ++p)
+    {
+      for (a = accept; *a != L'\0'; ++a)
+	if (*p == *a)
+	  break;
+      if (*a == L'\0')
+	return count;
+      else
+	++count;
+    }
+
+  return count;
+}
+libc_hidden_def (wcsspn)