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--- /dev/null
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+/* truncate.c: truncate too-long components in a filename.
+
+Copyright (C) 1993 Karl Berry.
+
+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 2, 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, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#include <kpathsea/config.h>
+
+#include <kpathsea/c-namemx.h>
+#include <kpathsea/c-pathch.h>
+#include <kpathsea/c-pathmx.h>
+#include <kpathsea/truncate.h>
+
+
+/* Truncate any too-long components in NAME, returning the result.  It's
+   too bad this is necessary.  See comments in readable.c for why.  */
+
+string
+kpse_truncate_filename P1C(const_string, name)
+{
+  unsigned c_len = 0;        /* Length of current component.  */
+  unsigned ret_len = 0;      /* Length of constructed result.  */
+  
+  /* Allocate enough space.  */
+  string ret = (string) xmalloc (strlen (name) + 1);
+
+  for (; *name; name++)
+    {
+      if (IS_DIR_SEP (*name))
+        { /* At a directory delimiter, reset component length.  */
+          c_len = 0;
+        }
+      else if (c_len > NAME_MAX)
+        { /* If past the max for a component, ignore this character.  */
+          continue;
+        }
+
+      /* Copy this character.  */
+      ret[ret_len++] = *name;
+      c_len++;
+    }
+  ret[ret_len] = 0;
+
+  return ret;
+}