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/*
* Copyright (C) 2008-2009 Patrick Ohly <patrick.ohly@gmx.de>
* Copyright (C) 2009 Intel Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) version 3.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#include <syncevo/lcs.h>
#include <syncevo/util.h>
#include <test.h>
#include <list>
#include <vector>
#include <algorithm>
#include <iterator>
#include <iostream>
#include <fstream>
#include <string>
#include <utility>
#include <sstream>
#include <config.h>
#include <syncevo/declarations.h>
SE_BEGIN_CXX
#ifdef ENABLE_UNIT_TESTS
template <class IT> void readlines(std::istream &in,
IT out)
{
std::string line;
while (std::getline(in, line)) {
*out++ = line;
}
}
/**
* implements the assignment of EnumerateChunks
*/
template <class IT, class C = int> class EnumerateChunksProxy {
public:
EnumerateChunksProxy(const std::string &keyword, const IT &out, const C count) :
m_keyword(keyword),
m_out(out),
m_count(count)
{}
EnumerateChunksProxy &operator=(const std::string &rhs)
{
if (!rhs.compare(0, m_keyword.size(), m_keyword)) {
m_count++;
}
m_out = std::make_pair(rhs, m_count);
return *this;
}
protected:
std::string m_keyword;
IT m_out;
C m_count;
};
/**
* Output iterator which identifies related chunks
* by incrementing a running count each time a certain
* keyword is found at the beginning of the line.
* Writes the line,count pair to another output
* iterator.
*/
template <class IT, class C = int> class EnumerateChunks : private EnumerateChunksProxy<IT, C> {
public:
EnumerateChunks(const std::string &keyword, const IT &out, const C count) :
EnumerateChunksProxy<IT, C>(keyword, out, count)
{}
EnumerateChunksProxy<IT, C> &operator*() { return *this; }
EnumerateChunks &operator++() { this->m_out++; return *this; }
EnumerateChunks &operator++(int) { ++this->m_out; return *this; }
};
template <class IT, class C>
class EnumerateChunks<IT, C>
make_enumerate_chunks(const std::string &keyword, IT out, C count)
{
return EnumerateChunks<IT, C>(keyword, out, count);
}
class LCSTest : public CppUnit::TestFixture {
CPPUNIT_TEST_SUITE(LCSTest);
CPPUNIT_TEST(lcs);
CPPUNIT_TEST_SUITE_END();
public:
void lcs()
{
std::ifstream file1("testcases/lcs/file1.txt");
std::ifstream file2("testcases/lcs/file2.txt");
typedef std::vector< std::pair<std::string, int> > content;
content content1, content2;
readlines(file1, make_enumerate_chunks("begin", std::back_inserter(content1), 0));
readlines(file2, make_enumerate_chunks("begin", std::back_inserter(content2), 0));
std::vector< LCS::Entry<std::string> > result;
LCS::lcs(content1, content2, std::back_inserter(result), LCS::accessor<content>());
std::ostringstream out;
std::copy(result.begin(), result.end(), std::ostream_iterator< LCS::Entry<std::string> >(out));
CPPUNIT_ASSERT_EQUAL(std::string("1, 4: begin\n"
"2, 5: item1\n"
"3, 6: end\n"),
out.str());
CPPUNIT_ASSERT_EQUAL((size_t)3, result.size());
}
};
SYNCEVOLUTION_TEST_SUITE_REGISTRATION(LCSTest);
#ifdef MAIN
int main(int argc, char **argv)
{
if (argc != 3) {
std::cerr << "Usage: lcs file1 file2" << std::endl;
return 1;
}
std::ifstream file1(argv[1]);
std::ifstream file2(argv[2]);
typedef std::vector< std::pair<std::string, int> > content;
content content1, content2;
readlines(file1, make_enumerate_chunks("begin", std::back_inserter(content1), 0));
readlines(file2, make_enumerate_chunks("begin", std::back_inserter(content2), 0));
std::vector< LCS::Entry<std::string> > result;
LCS::lcs(content1, content2, std::back_inserter(result), LCS::accessor<content>());
std::copy(result.begin(), result.end(), std::ostream_iterator< LCS::Entry<std::string> >(std::cout));
std::cout << "Length: " << result.size() << std::endl;
return 0;
}
#endif // MAIN
#endif // ENABLE_UNIT_TESTS
SE_END_CXX
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