55 lines
1.6 KiB
C
55 lines
1.6 KiB
C
/* *****************************************************************************
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* utils/extension.c -- extension utilities.
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* Copyright (C) 2017 Thomas "Cakeisalie5" Touhey <thomas@touhey.fr>
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*
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* This file is part of libg1m.
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* libg1m is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 3.0 of the License,
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* or (at your option) any later version.
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*
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* libg1m is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with libg1m; if not, see <http://www.gnu.org/licenses/>.
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* ************************************************************************** */
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#include <libg1m/internals.h>
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#include <ctype.h>
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/**
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* g1m_getext:
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* Get extension from a path.
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*
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* @arg path the path.
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* @arg buf the extension buffer.
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* @arg n the extension buffer size.
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* @return the size of the extension.
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*/
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int g1m_getext(const char *path, char *buf, size_t n)
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{
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int i;
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/* no size? */
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if (!n) return (0);
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/* get filename */
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const char *filename = strrchr(path, '/');
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filename = filename ? filename + 1 : path;
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/* get extension */
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const char *ext = strrchr(filename, '.');
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ext = ext ? ext + 1 : "";
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/* copy it */
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buf[n - 1] = 0; strncpy(buf, ext, n - 1);
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for (i = 0; buf[i]; i++)
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buf[i] = tolower(buf[i]);
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/* return the size */
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return (strlen(buf));
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}
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