/*
 * Cppcheck - A tool for static C/C++ code analysis
 * Copyright (C) 2007-2016 Cppcheck team.
 *
 * 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 "path.h"
#include "testsuite.h"

#include <string>
#include <vector>

class TestPath : public TestFixture {
public:
    TestPath() : TestFixture("TestPath") {
    }

private:

    void run() {
        TEST_CASE(simplify_path);
        TEST_CASE(accept_file);
        TEST_CASE(getCurrentPath);
        TEST_CASE(isAbsolute);
        TEST_CASE(getRelative);
        TEST_CASE(is_c);
        TEST_CASE(is_cpp);
        TEST_CASE(get_path_from_filename);
    }

    void simplify_path() const {
        // Path::simplifyPath()
        ASSERT_EQUALS("index.h", Path::simplifyPath("index.h"));
        ASSERT_EQUALS("index.h", Path::simplifyPath("./index.h"));
        ASSERT_EQUALS("index.h", Path::simplifyPath(".//index.h"));
        ASSERT_EQUALS("index.h", Path::simplifyPath(".///index.h"));
        ASSERT_EQUALS("/index.h", Path::simplifyPath("/index.h"));
        ASSERT_EQUALS("/path/", Path::simplifyPath("/path/"));
        ASSERT_EQUALS("/", Path::simplifyPath("/"));
        ASSERT_EQUALS("/", Path::simplifyPath("/."));
        ASSERT_EQUALS("/", Path::simplifyPath("/./"));
        ASSERT_EQUALS("/index.h", Path::simplifyPath("/./index.h"));
        ASSERT_EQUALS("/", Path::simplifyPath("/.//"));
        ASSERT_EQUALS("/index.h", Path::simplifyPath("/.//index.h"));
        ASSERT_EQUALS("../index.h", Path::simplifyPath("../index.h"));
        ASSERT_EQUALS("/index.h", Path::simplifyPath("/path/../index.h"));
        ASSERT_EQUALS("index.h", Path::simplifyPath("./path/../index.h"));
        ASSERT_EQUALS("index.h", Path::simplifyPath("path/../index.h"));
        ASSERT_EQUALS("/index.h", Path::simplifyPath("/path//../index.h"));
        ASSERT_EQUALS("index.h", Path::simplifyPath("./path//../index.h"));
        ASSERT_EQUALS("index.h", Path::simplifyPath("path//../index.h"));
        ASSERT_EQUALS("/index.h", Path::simplifyPath("/path/..//index.h"));
        ASSERT_EQUALS("index.h", Path::simplifyPath("./path/..//index.h"));
        ASSERT_EQUALS("index.h", Path::simplifyPath("path/..//index.h"));
        ASSERT_EQUALS("/index.h", Path::simplifyPath("/path//..//index.h"));
        ASSERT_EQUALS("index.h", Path::simplifyPath("./path//..//index.h"));
        ASSERT_EQUALS("index.h", Path::simplifyPath("path//..//index.h"));
        ASSERT_EQUALS("/index.h", Path::simplifyPath("/path/../other/../index.h"));
        ASSERT_EQUALS("/index.h", Path::simplifyPath("/path/../other///././../index.h"));
        ASSERT_EQUALS("/index.h", Path::simplifyPath("/path/../other/././..///index.h"));
        ASSERT_EQUALS("/index.h", Path::simplifyPath("/path/../other///././..///index.h"));
        ASSERT_EQUALS("../path/index.h", Path::simplifyPath("../path/other/../index.h"));
        ASSERT_EQUALS("a/index.h", Path::simplifyPath("a/../a/index.h"));
        ASSERT_EQUALS(".", Path::simplifyPath("a/.."));
        ASSERT_EQUALS(".", Path::simplifyPath("./a/.."));
        ASSERT_EQUALS("../../src/test.cpp", Path::simplifyPath("../../src/test.cpp"));
        ASSERT_EQUALS("../../../src/test.cpp", Path::simplifyPath("../../../src/test.cpp"));
        ASSERT_EQUALS("src/test.cpp", Path::simplifyPath(".//src/test.cpp"));
        ASSERT_EQUALS("src/test.cpp", Path::simplifyPath(".///src/test.cpp"));
        ASSERT_EQUALS("test.cpp", Path::simplifyPath("./././././test.cpp"));
        ASSERT_EQUALS("src/", Path::simplifyPath("src/abc/.."));
        ASSERT_EQUALS("src/", Path::simplifyPath("src/abc/../"));

        // Handling of UNC paths on Windows
        ASSERT_EQUALS("//src/test.cpp", Path::simplifyPath("//src/test.cpp"));
        ASSERT_EQUALS("//src/test.cpp", Path::simplifyPath("///src/test.cpp"));

        // Path::removeQuotationMarks()
        ASSERT_EQUALS("index.cpp", Path::removeQuotationMarks("index.cpp"));
        ASSERT_EQUALS("index.cpp", Path::removeQuotationMarks("\"index.cpp"));
        ASSERT_EQUALS("index.cpp", Path::removeQuotationMarks("index.cpp\""));
        ASSERT_EQUALS("index.cpp", Path::removeQuotationMarks("\"index.cpp\""));
        ASSERT_EQUALS("path to/index.cpp", Path::removeQuotationMarks("\"path to\"/index.cpp"));
        ASSERT_EQUALS("path to/index.cpp", Path::removeQuotationMarks("\"path to/index.cpp\""));
        ASSERT_EQUALS("the/path to/index.cpp", Path::removeQuotationMarks("the/\"path to\"/index.cpp"));
        ASSERT_EQUALS("the/path to/index.cpp", Path::removeQuotationMarks("\"the/path to/index.cpp\""));
    }

    void accept_file() const {
        ASSERT(Path::acceptFile("index.cpp"));
        ASSERT(Path::acceptFile("index.invalid.cpp"));
        ASSERT(Path::acceptFile("index.invalid.Cpp"));
        ASSERT(Path::acceptFile("index.invalid.C"));
        ASSERT(Path::acceptFile("index.invalid.C++"));
        ASSERT(Path::acceptFile("index.")==false);
        ASSERT(Path::acceptFile("index")==false);
        ASSERT(Path::acceptFile("")==false);
        ASSERT(Path::acceptFile("C")==false);

        // don't accept any headers
        ASSERT_EQUALS(false, Path::acceptFile("index.h"));
        ASSERT_EQUALS(false, Path::acceptFile("index.hpp"));
    }

    void getCurrentPath() const {
        ASSERT_EQUALS(true, Path::isAbsolute(Path::getCurrentPath()));
    }

    void isAbsolute() const {
#ifdef _WIN32
        ASSERT_EQUALS(true, Path::isAbsolute("C:\\foo\\bar"));
        ASSERT_EQUALS(true, Path::isAbsolute("C:/foo/bar"));
        ASSERT_EQUALS(true, Path::isAbsolute("\\\\foo\\bar"));
        ASSERT_EQUALS(false, Path::isAbsolute("foo\\bar"));
        ASSERT_EQUALS(false, Path::isAbsolute("foo/bar"));
        ASSERT_EQUALS(false, Path::isAbsolute("foo.cpp"));
        ASSERT_EQUALS(false, Path::isAbsolute("C:foo.cpp"));
        ASSERT_EQUALS(false, Path::isAbsolute("C:foo\\bar.cpp"));
#else
        ASSERT_EQUALS(true, Path::isAbsolute("/foo/bar"));
        ASSERT_EQUALS(true, Path::isAbsolute("/"));
        ASSERT_EQUALS(false, Path::isAbsolute("foo/bar"));
        ASSERT_EQUALS(false, Path::isAbsolute("foo.cpp"));
#endif
    }

    void getRelative() const {
        std::vector<std::string> basePaths;
        basePaths.push_back(""); // Don't crash with empty paths
        basePaths.push_back("C:/foo");
        basePaths.push_back("C:/bar/");
        basePaths.push_back("C:/test.cpp");

        ASSERT_EQUALS("x.c", Path::getRelativePath("C:/foo/x.c", basePaths));
        ASSERT_EQUALS("y.c", Path::getRelativePath("C:/bar/y.c", basePaths));
        ASSERT_EQUALS("foo/y.c", Path::getRelativePath("C:/bar/foo/y.c", basePaths));
        ASSERT_EQUALS("C:/test.cpp", Path::getRelativePath("C:/test.cpp", basePaths));
        ASSERT_EQUALS("C:/foobar/test.cpp", Path::getRelativePath("C:/foobar/test.cpp", basePaths));
    }

    void is_c() const {
        ASSERT(Path::isC("index.cpp")==false);
        ASSERT(Path::isC("")==false);
        ASSERT(Path::isC("c")==false);
        ASSERT(Path::isC("index.c"));
        ASSERT(Path::isC("C:\\foo\\index.c"));

        // In unix .C is considered C++
#ifdef _WIN32
        ASSERT_EQUALS(true, Path::isC("C:\\foo\\index.C"));
#else
        ASSERT_EQUALS(false, Path::isC("C:\\foo\\index.C"));
#endif
    }

    void is_cpp() const {
        ASSERT(Path::isCPP("index.c")==false);

        // In unix .C is considered C++
#ifdef _WIN32
        ASSERT_EQUALS(false, Path::isCPP("index.C"));
#else
        ASSERT_EQUALS(true, Path::isCPP("index.C"));
#endif
        ASSERT(Path::isCPP("index.cpp"));
        ASSERT(Path::isCPP("C:\\foo\\index.cpp"));
        ASSERT(Path::isCPP("C:\\foo\\index.Cpp"));
    }

    void get_path_from_filename() const {
        ASSERT_EQUALS("", Path::getPathFromFilename("index.h"));
        ASSERT_EQUALS("/tmp/", Path::getPathFromFilename("/tmp/index.h"));
        ASSERT_EQUALS("a/b/c/", Path::getPathFromFilename("a/b/c/index.h"));
        ASSERT_EQUALS("a/b/c/", Path::getPathFromFilename("a/b/c/"));
    }
};

REGISTER_TEST(TestPath)