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| 'use strict';
|
| var chars = {}, unesc, temp;
|
| function reverse(object, prepender) {
| return Object.keys(object).reduce(function(reversed, key) {
| var newKey = prepender ? prepender + key : key; // Optionally prepend a string to key.
| reversed[object[key]] = newKey; // Swap key and value.
| return reversed; // Return the result.
| }, {});
| }
|
| /**
| * Regex for common characters
| */
|
| chars.escapeRegex = {
| '?': /\?/g,
| '@': /\@/g,
| '!': /\!/g,
| '+': /\+/g,
| '*': /\*/g,
| '(': /\(/g,
| ')': /\)/g,
| '[': /\[/g,
| ']': /\]/g
| };
|
| /**
| * Escape characters
| */
|
| chars.ESC = {
| '?': '__UNESC_QMRK__',
| '@': '__UNESC_AMPE__',
| '!': '__UNESC_EXCL__',
| '+': '__UNESC_PLUS__',
| '*': '__UNESC_STAR__',
| ',': '__UNESC_COMMA__',
| '(': '__UNESC_LTPAREN__',
| ')': '__UNESC_RTPAREN__',
| '[': '__UNESC_LTBRACK__',
| ']': '__UNESC_RTBRACK__'
| };
|
| /**
| * Unescape characters
| */
|
| chars.UNESC = unesc || (unesc = reverse(chars.ESC, '\\'));
|
| chars.ESC_TEMP = {
| '?': '__TEMP_QMRK__',
| '@': '__TEMP_AMPE__',
| '!': '__TEMP_EXCL__',
| '*': '__TEMP_STAR__',
| '+': '__TEMP_PLUS__',
| ',': '__TEMP_COMMA__',
| '(': '__TEMP_LTPAREN__',
| ')': '__TEMP_RTPAREN__',
| '[': '__TEMP_LTBRACK__',
| ']': '__TEMP_RTBRACK__'
| };
|
| chars.TEMP = temp || (temp = reverse(chars.ESC_TEMP));
|
| module.exports = chars;
|
|
