Jordi Boggiano
11 years ago
commit
0df9c803a5
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<?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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/**
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* Formats json strings used for php < 5.4 because the json_encode doesn't
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* supports the flags JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE
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* in these versions
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*
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* @author Konstantin Kudryashiv <ever.zet@gmail.com>
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* @author Jordi Boggiano <j.boggiano@seld.be>
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*/
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class JsonFormatter
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{
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/**
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*
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* This code is based on the function found at:
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* http://recursive-design.com/blog/2008/03/11/format-json-with-php/
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*
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* Originally licensed under MIT by Dave Perrett <mail@recursive-design.com>
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*
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*
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* @param string $json
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* @param bool $unescapeUnicode Un escape unicode
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* @param bool $unescapeSlashes Un escape slashes
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* @return string
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*/
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public static function format($json, $unescapeUnicode, $unescapeSlashes)
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{
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$result = '';
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$pos = 0;
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$strLen = strlen($json);
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$indentStr = ' ';
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$newLine = "\n";
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$outOfQuotes = true;
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$buffer = '';
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$noescape = true;
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for ($i = 0; $i < $strLen; $i++) {
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// Grab the next character in the string
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$char = substr($json, $i, 1);
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// Are we inside a quoted string?
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if ('"' === $char && $noescape) {
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$outOfQuotes = !$outOfQuotes;
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}
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if (!$outOfQuotes) {
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$buffer .= $char;
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$noescape = '\\' === $char ? !$noescape : true;
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continue;
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} elseif ('' !== $buffer) {
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if ($unescapeSlashes) {
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$buffer = str_replace('\\/', '/', $buffer);
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}
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if ($unescapeUnicode && function_exists('mb_convert_encoding')) {
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// http://stackoverflow.com/questions/2934563/how-to-decode-unicode-escape-sequences-like-u00ed-to-proper-utf-8-encoded-cha
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$buffer = preg_replace_callback('/(\\\\+)u([0-9a-f]{4})/i', function($match) {
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$l = strlen($match[1]);
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if ($l % 2) {
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return str_repeat('\\', $l - 1) . mb_convert_encoding(
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pack('H*', $match[2]),
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'UTF-8',
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'UCS-2BE'
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);
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}
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return $match[0];
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}, $buffer);
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}
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$result .= $buffer.$char;
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$buffer = '';
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continue;
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}
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if (':' === $char) {
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// Add a space after the : character
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$char .= ' ';
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} elseif (('}' === $char || ']' === $char)) {
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$pos--;
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$prevChar = substr($json, $i - 1, 1);
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if ('{' !== $prevChar && '[' !== $prevChar) {
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// If this character is the end of an element,
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// output a new line and indent the next line
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$result .= $newLine;
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for ($j = 0; $j < $pos; $j++) {
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$result .= $indentStr;
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}
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} else {
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// Collapse empty {} and []
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$result = rtrim($result)."\n\n".$indentStr;
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}
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}
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$result .= $char;
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// If the last character was the beginning of an element,
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// output a new line and indent the next line
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if (',' === $char || '{' === $char || '[' === $char) {
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$result .= $newLine;
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if ('{' === $char || '[' === $char) {
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$pos++;
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}
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for ($j = 0; $j < $pos; $j++) {
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$result .= $indentStr;
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}
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}
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}
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return $result;
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}
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}
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@ -0,0 +1,45 @@
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<?php
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/*
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* This file is part of Composer.
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*
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* (c) Nils Adermann <naderman@naderman.de>
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* Jordi Boggiano <j.boggiano@seld.be>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Composer\Test\Json;
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use Composer\Json\JsonFormatter;
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class JsonFormatterTest extends \PHPUnit_Framework_TestCase
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{
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/**
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* Test if \u0119 (196+153) will get correctly formatted
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* See ticket #2613
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*/
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public function testUnicodeWithPrependedSlash()
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{
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$data = '"' . chr(92) . chr(92) . chr(92) . 'u0119"';
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$encodedData = JsonFormatter::format($data, true, true);
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$expected = '34+92+92+196+153+34';
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$this->assertEquals($expected, $this->getCharacterCodes($encodedData));
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}
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/**
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* Convert string to character codes split by a plus sign
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* @param string $string
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* @return string
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*/
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protected function getCharacterCodes($string)
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{
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$codes = array();
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for ($i = 0; $i < strlen($string); $i++) {
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$codes[] = ord($string[$i]);
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}
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return implode('+', $codes);
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}
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}
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