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/*
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* lftp - file transfer program
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*
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* Copyright (c) 1996-2016 by Alexander V. Lukyanov (lav@yars.free.net)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program 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. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#include <fnmatch.h>
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#include "PatternSet.h"
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PatternSet::PatternSet()
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{
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chain=0;
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first=0;
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}
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void PatternSet::Add(Type t,Pattern *p)
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{
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chain=new PatternLink(t,p,chain);
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if(!first)
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first=chain;
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}
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void PatternSet::AddFirst(Type t,Pattern *p)
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{
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PatternLink *new_link=new PatternLink(t,p,NULL);
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if(!first)
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first=chain=new_link;
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else
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first->next=new_link;
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}
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PatternSet::Type PatternSet::GetFirstType() const
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{
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return first->type;
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}
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PatternSet::~PatternSet()
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{
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while(chain)
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{
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PatternLink *del=chain;
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chain=chain->next;
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delete del;
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}
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}
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bool PatternSet::Match(Type type,const char *str) const
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{
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for(PatternLink *scan=chain; scan; scan=scan->next)
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{
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if(scan->pattern->Match(str))
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return scan->type==type;
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if(!scan->next)
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return scan->type!=type;
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}
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return false;
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}
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PatternSet::Glob::Glob(const char *p) : Pattern(p)
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{
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slash_count=0;
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for(p=pattern; *p; p++)
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if(*p=='/')
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slash_count++;
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}
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// abc/def.zip matches *.zip
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// abc/def/ghi matches def/g*
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bool PatternSet::Glob::Match(const char *str)
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{
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const char *scan=str+strlen(str);
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int countdown=slash_count;
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while(scan>str)
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{
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scan--;
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if(*scan=='/')
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{
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if(countdown==0)
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{
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scan++;
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break;
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}
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countdown--;
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}
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}
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return fnmatch(pattern,scan,FNM_PATHNAME)==0;
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}
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PatternSet::Regex::Regex(const char *p) : Pattern(p)
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{
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memset(&compiled,0,sizeof(compiled)); // safety.
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int errcode=regcomp(&compiled,pattern,REG_EXTENDED|REG_NOSUB);
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if(errcode)
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{
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size_t need=regerror(errcode,0,0,0);
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xstring& e=xstring::get_tmp();
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e.get_space(need-1);
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e.set_length(regerror(errcode,0,e.get_non_const(),need)-1);
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error.setf(_("regular expression `%s': %s"),p,e.get());
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}
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}
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PatternSet::Regex::~Regex()
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{
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if(!error)
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regfree(&compiled);
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}
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bool PatternSet::Regex::Match(const char *str)
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{
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if(error)
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return false;
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return regexec(&compiled,str,0,0,0)==0;
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}
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