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126 lines
3.4 KiB
PHP
126 lines
3.4 KiB
PHP
<?php
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/*
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* This file is part of Composer.
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*
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* (c) Nils Adermann <naderman@naderman.de>
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* Jordi Boggiano <j.boggiano@seld.be>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Composer\Json;
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use Composer\Repository\RepositoryManager;
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/**
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* Reads/writes json files.
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*
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* @author Konstantin Kudryashiv <ever.zet@gmail.com>
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*/
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class JsonFile
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{
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private $path;
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/**
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* Initializes json file reader/parser.
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*
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* @param string $lockFile path to a lockfile
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*/
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public function __construct($path)
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{
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$this->path = $path;
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}
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/**
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* Checks whether json file exists.
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*
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* @return Boolean
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*/
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public function exists()
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{
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return is_file($this->path);
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}
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/**
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* Reads json file.
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*
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* @param string $json path or json string
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*
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* @return array
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*/
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public function read()
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{
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$json = file_get_contents($this->path);
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return static::parseJson($json);
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}
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/**
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* Writes json file.
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*
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* @param array $hash writes hash into json file
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*/
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public function write(array $hash)
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{
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$dir = dirname($this->path);
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if (!is_dir($dir)) {
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if (file_exists($dir)) {
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throw new \UnexpectedValueException(
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$dir.' exists and is not a directory.'
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);
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}
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if (!mkdir($dir, 0777, true)) {
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throw new \UnexpectedValueException(
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$dir.' does not exist and could not be created.'
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);
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}
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}
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file_put_contents($this->path, json_encode($hash));
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}
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/**
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* Parses json string and returns hash.
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*
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* @param string $json json string
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*
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* @return array
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*/
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public static function parseJson($json)
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{
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$data = json_decode($json, true);
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if (null === $data && 'null' !== strtolower($json)) {
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switch (json_last_error()) {
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case JSON_ERROR_NONE:
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$msg = 'No error has occurred, is your composer.json file empty?';
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break;
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case JSON_ERROR_DEPTH:
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$msg = 'The maximum stack depth has been exceeded';
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break;
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case JSON_ERROR_STATE_MISMATCH:
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$msg = 'Invalid or malformed JSON';
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break;
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case JSON_ERROR_CTRL_CHAR:
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$msg = 'Control character error, possibly incorrectly encoded';
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break;
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case JSON_ERROR_SYNTAX:
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$msg = 'Syntax error';
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if (preg_match('#["}\]]\s*(,)\s*\}#', $json, $match, PREG_OFFSET_CAPTURE)) {
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$msg .= ', extra comma on line '.(substr_count(substr($json, 0, $match[1][1]), "\n")+1);
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} elseif (preg_match('#(\'.+?\' *:|: *\'.+?\')#', $json, $match, PREG_OFFSET_CAPTURE)) {
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$msg .= ', use double quotes (") instead of single quotes (\') on line '.(substr_count(substr($json, 0, $match[1][1]), "\n")+1);
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}
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break;
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case JSON_ERROR_UTF8:
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$msg = 'Malformed UTF-8 characters, possibly incorrectly encoded';
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break;
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}
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throw new \UnexpectedValueException('Incorrect composer.json file: '.$msg);
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}
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return $data;
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}
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}
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