/*
* lftp - file transfer program
*
* Copyright (c) 1996-2016 by Alexander V. Lukyanov (lav@yars.free.net)
*
* 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 3 of the License, 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, see <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <fnmatch.h>
#include "PatternSet.h"
PatternSet::PatternSet()
{
chain=0;
first=0;
}
void PatternSet::Add(Type t,Pattern *p)
{
chain=new PatternLink(t,p,chain);
if(!first)
first=chain;
}
void PatternSet::AddFirst(Type t,Pattern *p)
{
PatternLink *new_link=new PatternLink(t,p,NULL);
if(!first)
first=chain=new_link;
else
first->next=new_link;
}
PatternSet::Type PatternSet::GetFirstType() const
{
return first->type;
}
PatternSet::~PatternSet()
{
while(chain)
{
PatternLink *del=chain;
chain=chain->next;
delete del;
}
}
bool PatternSet::Match(Type type,const char *str) const
{
for(PatternLink *scan=chain; scan; scan=scan->next)
{
if(scan->pattern->Match(str))
return scan->type==type;
if(!scan->next)
return scan->type!=type;
}
return false;
}
PatternSet::Glob::Glob(const char *p) : Pattern(p)
{
slash_count=0;
for(p=pattern; *p; p++)
if(*p=='/')
slash_count++;
}
// abc/def.zip matches *.zip
// abc/def/ghi matches def/g*
bool PatternSet::Glob::Match(const char *str)
{
const char *scan=str+strlen(str);
int countdown=slash_count;
while(scan>str)
{
scan--;
if(*scan=='/')
{
if(countdown==0)
{
scan++;
break;
}
countdown--;
}
}
return fnmatch(pattern,scan,FNM_PATHNAME)==0;
}
PatternSet::Regex::Regex(const char *p) : Pattern(p)
{
memset(&compiled,0,sizeof(compiled)); // safety.
int errcode=regcomp(&compiled,pattern,REG_EXTENDED|REG_NOSUB);
if(errcode)
{
size_t need=regerror(errcode,0,0,0);
xstring& e=xstring::get_tmp();
e.get_space(need-1);
e.set_length(regerror(errcode,0,e.get_non_const(),need)-1);
error.setf(_("regular expression `%s': %s"),p,e.get());
}
}
PatternSet::Regex::~Regex()
{
if(!error)
regfree(&compiled);
}
bool PatternSet::Regex::Match(const char *str)
{
if(error)
return false;
return regexec(&compiled,str,0,0,0)==0;
}