mirror of
https://github.com/tag1consulting/d7_to_d10_migration.git
synced 2024-11-25 23:43:27 +00:00
102 lines
3.1 KiB
PHP
102 lines
3.1 KiB
PHP
<?php
|
|
|
|
/**
|
|
* @file
|
|
* Provides a helper to properly encode HTML-safe JSON prior to PHP 5.3.0.
|
|
*/
|
|
|
|
/**
|
|
* Encodes a PHP variable to HTML-safe JSON for PHP versions below 5.3.0.
|
|
*
|
|
* @see drupal_json_encode()
|
|
*/
|
|
function drupal_json_encode_helper($var) {
|
|
switch (gettype($var)) {
|
|
case 'boolean':
|
|
return $var ? 'true' : 'false'; // Lowercase necessary!
|
|
|
|
case 'integer':
|
|
case 'double':
|
|
return $var;
|
|
|
|
case 'resource':
|
|
case 'string':
|
|
// Always use Unicode escape sequences (\u0022) over JSON escape
|
|
// sequences (\") to prevent browsers interpreting these as
|
|
// special characters.
|
|
$replace_pairs = array(
|
|
// ", \ and U+0000 - U+001F must be escaped according to RFC 4627.
|
|
'\\' => '\u005C',
|
|
'"' => '\u0022',
|
|
"\x00" => '\u0000',
|
|
"\x01" => '\u0001',
|
|
"\x02" => '\u0002',
|
|
"\x03" => '\u0003',
|
|
"\x04" => '\u0004',
|
|
"\x05" => '\u0005',
|
|
"\x06" => '\u0006',
|
|
"\x07" => '\u0007',
|
|
"\x08" => '\u0008',
|
|
"\x09" => '\u0009',
|
|
"\x0a" => '\u000A',
|
|
"\x0b" => '\u000B',
|
|
"\x0c" => '\u000C',
|
|
"\x0d" => '\u000D',
|
|
"\x0e" => '\u000E',
|
|
"\x0f" => '\u000F',
|
|
"\x10" => '\u0010',
|
|
"\x11" => '\u0011',
|
|
"\x12" => '\u0012',
|
|
"\x13" => '\u0013',
|
|
"\x14" => '\u0014',
|
|
"\x15" => '\u0015',
|
|
"\x16" => '\u0016',
|
|
"\x17" => '\u0017',
|
|
"\x18" => '\u0018',
|
|
"\x19" => '\u0019',
|
|
"\x1a" => '\u001A',
|
|
"\x1b" => '\u001B',
|
|
"\x1c" => '\u001C',
|
|
"\x1d" => '\u001D',
|
|
"\x1e" => '\u001E',
|
|
"\x1f" => '\u001F',
|
|
// Prevent browsers from interpreting these as as special.
|
|
"'" => '\u0027',
|
|
'<' => '\u003C',
|
|
'>' => '\u003E',
|
|
'&' => '\u0026',
|
|
// Prevent browsers from interpreting the solidus as special and
|
|
// non-compliant JSON parsers from interpreting // as a comment.
|
|
'/' => '\u002F',
|
|
// While these are allowed unescaped according to ECMA-262, section
|
|
// 15.12.2, they cause problems in some JSON parsers.
|
|
"\xe2\x80\xa8" => '\u2028', // U+2028, Line Separator.
|
|
"\xe2\x80\xa9" => '\u2029', // U+2029, Paragraph Separator.
|
|
);
|
|
|
|
return '"' . strtr($var, $replace_pairs) . '"';
|
|
|
|
case 'array':
|
|
// Arrays in JSON can't be associative. If the array is empty or if it
|
|
// has sequential whole number keys starting with 0, it's not associative
|
|
// so we can go ahead and convert it as an array.
|
|
if (empty($var) || array_keys($var) === range(0, sizeof($var) - 1)) {
|
|
$output = array();
|
|
foreach ($var as $v) {
|
|
$output[] = drupal_json_encode_helper($v);
|
|
}
|
|
return '[ ' . implode(', ', $output) . ' ]';
|
|
}
|
|
// Otherwise, fall through to convert the array as an object.
|
|
|
|
case 'object':
|
|
$output = array();
|
|
foreach ($var as $k => $v) {
|
|
$output[] = drupal_json_encode_helper(strval($k)) . ':' . drupal_json_encode_helper($v);
|
|
}
|
|
return '{' . implode(', ', $output) . '}';
|
|
|
|
default:
|
|
return 'null';
|
|
}
|
|
}
|