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<?php |
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namespace Acquia\Json; |
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class Json implements JsonInterface |
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{ |
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/** |
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* @var boolean |
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*/ |
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protected static $useNativePrettyPrint = true; |
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/** |
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* Use the native PHP pretty print options. Set to false to use the local |
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* pretty print method in this class (not recommended). |
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* |
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* @param boolean $useNative |
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*/ |
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public static function useNativePrettyPrint($useNative = true) |
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{ |
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self::$useNativePrettyPrint = $useNative; |
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} |
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/** |
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* @param mixed $data |
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* @param bool $prettyPrint |
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* |
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* @return string |
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*/ |
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public static function encode($data, $prettyPrint = true) |
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{ |
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$options = JSON_HEX_TAG | JSON_HEX_APOS | JSON_HEX_AMP | JSON_HEX_QUOT; |
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$useNative = self::$useNativePrettyPrint && defined('JSON_PRETTY_PRINT') && defined('JSON_UNESCAPED_SLASHES'); |
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if ($prettyPrint && $useNative) { |
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$options = $options | JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES; |
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} |
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$json = json_encode($data, $options); |
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if ($prettyPrint && !$useNative) { |
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$json = self::prettyPrint($json); |
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} |
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return $json; |
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} |
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/** |
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* @param string $json |
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* |
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* @return array |
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*/ |
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public static function decode($json) |
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{ |
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return json_decode($json, true); |
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} |
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/** |
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* Indents a flat JSON string to make it more human-readable. |
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* |
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* The JSON_PRETTY_PRINT and JSON_UNESCAPED_SLASHES options are not |
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* available until PHP 5.4. |
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* |
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* @param string $json |
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* |
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* @return string |
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*/ |
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protected static function prettyPrint($json) |
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{ |
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$result = ''; |
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$pos = 0; |
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$indentation = ' '; |
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$newline = "\n"; |
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$previousChar = ''; |
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$outOfQuotes = true; |
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// Unescape slashes. |
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if (strpos($json, '/')) { |
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$json = preg_replace('#\134{1}/#', '/', $json); |
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} |
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$stringLength = strlen($json); |
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for ($i = 0; $i <= $stringLength; $i++) { |
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// Grab the next character in the string. |
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$char = substr($json, $i, 1); |
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if (':' == $previousChar && $outOfQuotes) { |
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$result .= ' '; |
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} |
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// Are we inside a quoted string? |
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if ('"' == $char && $previousChar != '\\') { |
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$outOfQuotes = !$outOfQuotes; |
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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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} elseif (('}' == $char || ']' == $char) && $outOfQuotes) { |
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$result .= $newline; |
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$pos --; |
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for ($j = 0; $j < $pos; $j++) { |
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$result .= $indentation; |
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} |
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} |
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// Add the character to the result string. |
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$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) && $outOfQuotes) { |
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$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 .= $indentation; |
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} |
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} |
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$previousChar = $char; |
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} |
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return $result; |
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} |
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/** |
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* Parses a file into a PHP array. |
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* |
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* @param string $filepath |
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* |
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* @throws \RuntimeException |
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*/ |
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public static function parseFile($filepath) |
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{ |
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if (!is_file($filepath)) { |
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throw new \RuntimeException('File not found: ' . $filepath); |
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} |
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if (!$filedata = static::readFiledata($filepath)) { |
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throw new \RuntimeException('Error reading file: ' . $filepath); |
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} |
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if (!$json = self::decode($filedata)) { |
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throw new \RuntimeException('Error parsing json: ' . $filepath); |
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} |
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return $json; |
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} |
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/** |
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* Wrapper around file_get_contents(), useful for testing the inability to |
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* read a file. |
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* |
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* @param string $filepath |
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* |
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* @return string|false |
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*/ |
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protected static function readFiledata($filepath) |
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{ |
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return @file_get_contents($filepath); |
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} |
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} |
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acquia /
acquia-sdk-php
