Viewing file:  JsonFormatter.php (4.41 KB) -rw-r--r--
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<?php
/*
* This file is part of Composer.
*
* (c) Nils Adermann <naderman@naderman.de>
* 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.
*/
namespace Composer\Json;
/**
* Formats json strings used for php < 5.4 because the json_encode doesn't
* supports the flags JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE
* in these versions
*
* @author Konstantin Kudryashiv <ever.zet@gmail.com>
* @author Jordi Boggiano <j.boggiano@seld.be>
*/
class JsonFormatter
{
/**
* This code is based on the function found at:
* http://recursive-design.com/blog/2008/03/11/format-json-with-php/
*
* Originally licensed under MIT by Dave Perrett <mail@recursive-design.com>
*
*
* @param string $json
* @param bool $unescapeUnicode Un escape unicode
* @param bool $unescapeSlashes Un escape slashes
* @return string
*/
public static function format($json, $unescapeUnicode, $unescapeSlashes)
{
$result = '';
$pos = 0;
$strLen = strlen($json);
$indentStr = ' ';
$newLine = "\n";
$outOfQuotes = true;
$buffer = '';
$noescape = true;
for ($i = 0; $i < $strLen; $i++) {
// Grab the next character in the string
$char = substr($json, $i, 1);
// Are we inside a quoted string?
if ('"' === $char && $noescape) {
$outOfQuotes = !$outOfQuotes;
}
if (!$outOfQuotes) {
$buffer .= $char;
$noescape = '\\' === $char ? !$noescape : true;
continue;
}
if ('' !== $buffer) {
if ($unescapeSlashes) {
$buffer = str_replace('\\/', '/', $buffer);
}
if ($unescapeUnicode && function_exists('mb_convert_encoding')) {
// https://stackoverflow.com/questions/2934563/how-to-decode-unicode-escape-sequences-like-u00ed-to-proper-utf-8-encoded-cha
$buffer = preg_replace_callback('/(\\\\+)u([0-9a-f]{4})/i', function ($match) {
$l = strlen($match[1]);
if ($l % 2) {
$code = hexdec($match[2]);
// 0xD800..0xDFFF denotes UTF-16 surrogate pair which won't be unescaped
// see https://github.com/composer/composer/issues/7510
if (0xD800 <= $code && 0xDFFF >= $code) {
return $match[0];
}
return str_repeat('\\', $l - 1) . mb_convert_encoding(
pack('H*', $match[2]),
'UTF-8',
'UCS-2BE'
);
}
return $match[0];
}, $buffer);
}
$result .= $buffer.$char;
$buffer = '';
continue;
}
if (':' === $char) {
// Add a space after the : character
$char .= ' ';
} elseif ('}' === $char || ']' === $char) {
$pos--;
$prevChar = substr($json, $i - 1, 1);
if ('{' !== $prevChar && '[' !== $prevChar) {
// If this character is the end of an element,
// output a new line and indent the next line
$result .= $newLine;
for ($j = 0; $j < $pos; $j++) {
$result .= $indentStr;
}
} else {
// Collapse empty {} and []
$result = rtrim($result);
}
}
$result .= $char;
// If the last character was the beginning of an element,
// output a new line and indent the next line
if (',' === $char || '{' === $char || '[' === $char) {
$result .= $newLine;
if ('{' === $char || '[' === $char) {
$pos++;
}
for ($j = 0; $j < $pos; $j++) {
$result .= $indentStr;
}
}
}
return $result;
}
}
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