mirror of https://github.com/aria2/aria2
101 lines
3.0 KiB
C++
101 lines
3.0 KiB
C++
/* <!-- copyright */
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/*
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* aria2 - The high speed download utility
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*
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* Copyright (C) 2006 Tatsuhiro Tsujikawa
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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 2 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, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* In addition, as a special exception, the copyright holders give
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* permission to link the code of portions of this program with the
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* OpenSSL library under certain conditions as described in each
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* individual source file, and distribute linked combinations
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* including the two.
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* You must obey the GNU General Public License in all respects
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* for all of the code used other than OpenSSL. If you modify
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* file(s) with this exception, you may extend this exception to your
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* version of the file(s), but you are not obligated to do so. If you
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* do not wish to do so, delete this exception statement from your
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* version. If you delete this exception statement from all source
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* files in the program, then also delete it here.
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*/
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/* copyright --> */
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#include "PStringBuildVisitor.h"
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#include "PStringSegment.h"
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#include "PStringNumLoop.h"
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#include "PStringSelect.h"
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#include "NumberDecorator.h"
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#include "a2functional.h"
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namespace aria2 {
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PStringBuildVisitor::PStringBuildVisitor() {}
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PStringBuildVisitor::~PStringBuildVisitor() {}
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void PStringBuildVisitor::visit(PStringSegment& segment)
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{
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std::string uri;
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if(buildQueue_.empty()) {
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uri += segment.getValue();
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} else {
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uri = buildQueue_.front();
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uri += segment.getValue();
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}
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buildQueue_.push_front(uri);
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if(!segment.hasNext()) {
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uris_.push_back(uri);
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}
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if(segment.getNext()) {
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segment.getNext()->accept(*this);
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}
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buildQueue_.pop_front();
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}
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void PStringBuildVisitor::visit(PStringNumLoop& s)
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{
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unsigned int start = s.getStartValue();
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unsigned int end = s.getEndValue();
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unsigned int step = s.getStep();
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for(unsigned int i = start; i <= end; i += step) {
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PStringSegment(s.getNumberDecorator()->decorate(i),
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s.getNext()).accept(*this);
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}
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}
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void PStringBuildVisitor::visit(PStringSelect& s)
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{
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const std::vector<std::string>& values = s.getValues();
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for(std::vector<std::string>::const_iterator i = values.begin(),
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eoi = values.end(); i != eoi; ++i) {
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PStringSegment(*i, s.getNext()).accept(*this);
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}
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}
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const std::vector<std::string>& PStringBuildVisitor::getURIs() const
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{
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return uris_;
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}
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void PStringBuildVisitor::reset()
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{
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buildQueue_.clear();
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uris_.clear();
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}
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} // namespace aria2
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