gitlab_archive.php

<?php

if ($argc < 3) {
    error_log("Usage: php gitlab_archive.php <private_token> <namespaced path> <optional-branch-or-commit-sha> > archive.tar.gz"); die();
}

$token = $argv[1];
$path = $argv[2];
$ref = isset($argv[3]) ? $argv[3] : null;

$get = function($path, $decode = true) use ($token) {
    $ch = curl_init("https://gitlab.com/api/v3/" . $path);
    curl_setopt($ch, CURLOPT_HTTPHEADER, ["PRIVATE-TOKEN: " . $token]);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    return $decode ? json_decode(curl_exec($ch)) : curl_exec($ch);
};

if (is_numeric($path)) {
    $projectId = $path;
} else {
    error_log("Finding project ID...");
    $project = $get("projects/" . urlencode($path));
    if (!isset($project->id)) {
        error_log("Could not find project"); die();
    }
    $projectId = $project->id;
}

if (!$ref) {
    error_log("Getting archive of tip of default branch...");
    echo $get('projects/' . $projectId . '/repository/archive', false);
    return;
}

if (ctype_xdigit($ref) && strlen($ref) >= 8) {
    error_log("Getting archive of commit " . $ref);
    echo $get('projects/' . $projectId . '/repository/archive?sha=' . $ref, false);
    return;
}

error_log("Getting commit ID of tip of branch " . $ref);
$branch = $get('projects/' . $projectId . '/repository/branches/' . $ref);
if (!isset($branch->name)) {
    error_log("Could not find branch"); die();
}

$ref = $branch->commit->id;
error_log("Getting archive of commit " . $ref);
echo $get('projects/' . $projectId . '/repository/archive?sha=' . $ref, false);