#!/usr/bin/php
<?php

/*
 * This file is part of the JSON Lint package.
 *
 * (c) Jordi Boggiano <j.boggiano@seld.be>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

function includeIfExists($file)
{
    if (file_exists($file)) {
        return include $file;
    }
}

includeIfExists('/usr/share/php/Seld/JsonLint/autoload.php');

use Seld\JsonLint\JsonParser;

$file = null;
$quiet = false;

if (isset($_SERVER['argc']) && $_SERVER['argc'] > 1) {
    for ($i = 1; $i < $_SERVER['argc']; $i++) {
        $arg = $_SERVER['argv'][$i];
        if ($arg == '-q' || $arg == '--quiet') {
            $quiet = true;
        } else if ($arg == '-h' || $arg == '--help') {
            showUsage();
        } else {
            $file = $arg;
        }
    }
}

if (!$file) {
    if ($contents = file_get_contents('php://stdin')) {
        lint($contents);
    } else {
        fwrite(STDERR, 'No file name or json input given'.PHP_EOL);
        exit(1);
    }
} else {
    if (!preg_match('{^https?://}i', $file)) {
        if (!file_exists($file)) {
            fwrite(STDERR, 'File not found: '.$file.PHP_EOL);
            exit(1);
        }
        if (!is_readable($file)) {
            fwrite(STDERR, 'File not readable: '.$file.PHP_EOL);
            exit(1);
        }
    }
}

lintFile($file, $quiet);

function lint($content, $quiet = false)
{
    $parser = new JsonParser();
    if ($err = $parser->lint($content)) {
        fwrite(STDERR, $err->getMessage().PHP_EOL);
        exit(1);
    }
    if (!$quiet) {
        echo 'Valid JSON'.PHP_EOL;
    }
    exit(0);
}

function lintFile($file, $quiet = false)
{
    $content = file_get_contents($file);
    $parser = new JsonParser();
    if ($err = $parser->lint($content)) {
        fwrite(STDERR, $file.': '.$err->getMessage().PHP_EOL);
        exit(1);
    }
    if (!$quiet) {
        echo 'Valid JSON'.PHP_EOL;
    }
    exit(0);
}

function showUsage()
{
    echo 'Usage: jsonlint file [options]'.PHP_EOL;
    echo PHP_EOL;
    echo 'Options:'.PHP_EOL;
    echo '  -q, --quiet     Cause jsonlint to be quiet when no errors are found'.PHP_EOL;
    echo '  -h, --help      Show this message'.PHP_EOL;
    exit(0);
}