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tetex-bin  3.0
find-suffix.c
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00001 /* find-suffix.c: return the stuff after a dot.
00002 
00003 Copyright (C) 1992, 93 Free Software Foundation, Inc.
00004 
00005 This library is free software; you can redistribute it and/or
00006 modify it under the terms of the GNU Library General Public
00007 License as published by the Free Software Foundation; either
00008 version 2 of the License, or (at your option) any later version.
00009 
00010 This library is distributed in the hope that it will be useful,
00011 but WITHOUT ANY WARRANTY; without even the implied warranty of
00012 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013 Library General Public License for more details.
00014 
00015 You should have received a copy of the GNU Library General Public
00016 License along with this library; if not, write to the Free Software
00017 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
00018 
00019 #include <kpathsea/config.h>
00020 
00021 #include <kpathsea/c-pathch.h>
00022 
00023 
00024 /* Return pointer to first character after `.' in last directory element
00025    of NAME.  If the name is `foo' or `/foo.bar/baz', we have no extension.  */
00026 
00027 string
00028 find_suffix P1C(const_string, name)
00029 {
00030   const_string slash_pos;
00031   string dot_pos = strrchr (name, '.');
00032   
00033   if (dot_pos == NULL)
00034     return NULL;
00035   
00036   for (slash_pos = name + strlen (name);
00037        slash_pos > dot_pos && !IS_DIR_SEP (*slash_pos);
00038        slash_pos--)
00039     ;
00040   
00041   return slash_pos > dot_pos ? NULL : dot_pos + 1;
00042 }
00043 
00044 
00045