src/repositories.cpp

/* Copyright 2025 Mike Becker. All rights reserved.
*
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "repositories.h"

#include <utility>
#include <filesystem>

using namespace fm;
namespace fs = std::filesystem;

repository::repository(repository_type type, std::string path) noexcept
    : path(std::move(path)),
      name(fs::path(this->path).filename()),
      type(type) {
}

bool repositories::exists(const std::string &path) {
    return fs::is_directory(path);
}

void repositories::scan(std::string path, unsigned depth) {
    // check the base path
    {
        auto p = fs::path{path};
        if (is_directory(p / ".hg")) {
            m_repositories.emplace_back(HG, canonical(p));
            return;
        } else if (is_directory(p / ".git")) {
            m_repositories.emplace_back(GIT, canonical(p));
            return;
        } else if (depth == 0) {
            return;
        }
    }

    // if depth is non-zero, scan subdirs recursively
    --depth;
    for (auto i = fs::recursive_directory_iterator(
             std::move(path),
             fs::directory_options::skip_permission_denied);
         i != fs::recursive_directory_iterator(); ++i) {
        if (!i->is_directory()) continue;
        auto p = i->path();
        if (is_directory(p / ".hg")) {
            m_repositories.emplace_back(HG, canonical(p));
            i.disable_recursion_pending();
        } else if (is_directory(p / ".git")) {
            m_repositories.emplace_back(GIT, canonical(p));
            i.disable_recursion_pending();
        } else if (static_cast<unsigned>(i.depth()) == depth) {
            i.disable_recursion_pending();
        }
    }
}