str/str_path_isabs.c

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00001 // Copyright (C) 2006-2007 Benedikt Böhm <hollow@gentoo.org>
00002 //
00003 // This program is free software; you can redistribute it and/or
00004 // modify it under the terms of the GNU General Public License
00005 // as published by the Free Software Foundation; either version 2
00006 // of the License, or (at your option) any later version.
00007 //
00008 // This program is distributed in the hope that it will be useful,
00009 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00010 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00011 // GNU General Public License for more details.
00012 //
00013 // You should have received a copy of the GNU General Public License
00014 // along with this program; if not, write to the Free Software
00015 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
00016 
00017 #include "str.h"
00018 #include "strtok.h"
00019 
00020 int str_path_isabs(const char *str)
00021 {
00022         int abs = 1;
00023 
00024         if (str_isempty(str))
00025                 return 0;
00026 
00027         if (*str != '/')
00028                 return 0;
00029 
00030         strtok_t _st, *st = &_st, *p;
00031 
00032         if (!strtok_init_str(st, str, "/", 0))
00033                 return -1;
00034 
00035         strtok_for_each(st, p) {
00036                 if (str_equal(p->token, ".") || str_equal(p->token, "..") ||
00037                     !str_isgraph(p->token)) {
00038                         abs = 0;
00039                         break;
00040                 }
00041         }
00042 
00043         strtok_free(st);
00044 
00045         return abs;
00046 }

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