PHP's get_html_translation_table in JavaScript

Here’s what our current JavaScript equivalent to PHP's get_html_translation_table looks like.

module.exports = function get_html_translation_table (table, quoteStyle) { // eslint-disable-line camelcase
// discuss at: https://locutus.io/php/get_html_translation_table/
// original by: Philip Peterson
// revised by: Kevin van Zonneveld (https://kvz.io)
// bugfixed by: noname
// bugfixed by: Alex
// bugfixed by: Marco
// bugfixed by: madipta
// bugfixed by: Brett Zamir (https://brett-zamir.me)
// bugfixed by: T.Wild
// improved by: KELAN
// improved by: Brett Zamir (https://brett-zamir.me)
// input by: Frank Forte
// input by: Ratheous
// note 1: It has been decided that we're not going to add global
// note 1: dependencies to Locutus, meaning the constants are not
// note 1: real constants, but strings instead. Integers are also supported if someone
// note 1: chooses to create the constants themselves.
// example 1: get_html_translation_table('HTML_SPECIALCHARS')
// returns 1: {'"': '&quot;', '&': '&amp;', '<': '&lt;', '>': '&gt;'}
const entities = {}
const hashMap = {}
let decimal
const constMappingTable = {}
const constMappingQuoteStyle = {}
let useTable = {}
let useQuoteStyle = {}
// Translate arguments
constMappingTable[0] = 'HTML_SPECIALCHARS'
constMappingTable[1] = 'HTML_ENTITIES'
constMappingQuoteStyle[0] = 'ENT_NOQUOTES'
constMappingQuoteStyle[2] = 'ENT_COMPAT'
constMappingQuoteStyle[3] = 'ENT_QUOTES'
useTable = !isNaN(table)
? constMappingTable[table]
: table
? table.toUpperCase()
: 'HTML_SPECIALCHARS'
useQuoteStyle = !isNaN(quoteStyle)
? constMappingQuoteStyle[quoteStyle]
: quoteStyle
? quoteStyle.toUpperCase()
: 'ENT_COMPAT'
if (useTable !== 'HTML_SPECIALCHARS' && useTable !== 'HTML_ENTITIES') {
throw new Error('Table: ' + useTable + ' not supported')
}
entities['38'] = '&amp;'
if (useTable === 'HTML_ENTITIES') {
entities['160'] = '&nbsp;'
entities['161'] = '&iexcl;'
entities['162'] = '&cent;'
entities['163'] = '&pound;'
entities['164'] = '&curren;'
entities['165'] = '&yen;'
entities['166'] = '&brvbar;'
entities['167'] = '&sect;'
entities['168'] = '&uml;'
entities['169'] = '&copy;'
entities['170'] = '&ordf;'
entities['171'] = '&laquo;'
entities['172'] = '&not;'
entities['173'] = '&shy;'
entities['174'] = '&reg;'
entities['175'] = '&macr;'
entities['176'] = '&deg;'
entities['177'] = '&plusmn;'
entities['178'] = '&sup2;'
entities['179'] = '&sup3;'
entities['180'] = '&acute;'
entities['181'] = '&micro;'
entities['182'] = '&para;'
entities['183'] = '&middot;'
entities['184'] = '&cedil;'
entities['185'] = '&sup1;'
entities['186'] = '&ordm;'
entities['187'] = '&raquo;'
entities['188'] = '&frac14;'
entities['189'] = '&frac12;'
entities['190'] = '&frac34;'
entities['191'] = '&iquest;'
entities['192'] = '&Agrave;'
entities['193'] = '&Aacute;'
entities['194'] = '&Acirc;'
entities['195'] = '&Atilde;'
entities['196'] = '&Auml;'
entities['197'] = '&Aring;'
entities['198'] = '&AElig;'
entities['199'] = '&Ccedil;'
entities['200'] = '&Egrave;'
entities['201'] = '&Eacute;'
entities['202'] = '&Ecirc;'
entities['203'] = '&Euml;'
entities['204'] = '&Igrave;'
entities['205'] = '&Iacute;'
entities['206'] = '&Icirc;'
entities['207'] = '&Iuml;'
entities['208'] = '&ETH;'
entities['209'] = '&Ntilde;'
entities['210'] = '&Ograve;'
entities['211'] = '&Oacute;'
entities['212'] = '&Ocirc;'
entities['213'] = '&Otilde;'
entities['214'] = '&Ouml;'
entities['215'] = '&times;'
entities['216'] = '&Oslash;'
entities['217'] = '&Ugrave;'
entities['218'] = '&Uacute;'
entities['219'] = '&Ucirc;'
entities['220'] = '&Uuml;'
entities['221'] = '&Yacute;'
entities['222'] = '&THORN;'
entities['223'] = '&szlig;'
entities['224'] = '&agrave;'
entities['225'] = '&aacute;'
entities['226'] = '&acirc;'
entities['227'] = '&atilde;'
entities['228'] = '&auml;'
entities['229'] = '&aring;'
entities['230'] = '&aelig;'
entities['231'] = '&ccedil;'
entities['232'] = '&egrave;'
entities['233'] = '&eacute;'
entities['234'] = '&ecirc;'
entities['235'] = '&euml;'
entities['236'] = '&igrave;'
entities['237'] = '&iacute;'
entities['238'] = '&icirc;'
entities['239'] = '&iuml;'
entities['240'] = '&eth;'
entities['241'] = '&ntilde;'
entities['242'] = '&ograve;'
entities['243'] = '&oacute;'
entities['244'] = '&ocirc;'
entities['245'] = '&otilde;'
entities['246'] = '&ouml;'
entities['247'] = '&divide;'
entities['248'] = '&oslash;'
entities['249'] = '&ugrave;'
entities['250'] = '&uacute;'
entities['251'] = '&ucirc;'
entities['252'] = '&uuml;'
entities['253'] = '&yacute;'
entities['254'] = '&thorn;'
entities['255'] = '&yuml;'
}
if (useQuoteStyle !== 'ENT_NOQUOTES') {
entities['34'] = '&quot;'
}
if (useQuoteStyle === 'ENT_QUOTES') {
entities['39'] = '&#39;'
}
entities['60'] = '&lt;'
entities['62'] = '&gt;'
// ascii decimals to real symbols
for (decimal in entities) {
if (entities.hasOwnProperty(decimal)) {
hashMap[String.fromCharCode(decimal)] = entities[decimal]
}
}
return hashMap
}
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How to use

You you can install via npm install locutus and require it via require('locutus/php/strings/get_html_translation_table'). You could also require the strings module in full so that you could access strings.get_html_translation_table instead.

If you intend to target the browser, you can then use a module bundler such as Parcel, webpack, Browserify, or rollup.js. This can be important because Locutus allows modern JavaScript in the source files, meaning it may not work in all browsers without a build/transpile step. Locutus does transpile all functions to ES5 before publishing to npm.

A community effort

Not unlike Wikipedia, Locutus is an ongoing community effort. Our philosophy follows The McDonald’s Theory. This means that we don't consider it to be a bad thing that many of our functions are first iterations, which may still have their fair share of issues. We hope that these flaws will inspire others to come up with better ideas.

This way of working also means that we don't offer any production guarantees, and recommend to use Locutus inspiration and learning purposes only.

Notes

  • It has been decided that we’re not going to add global dependencies to Locutus, meaning the constants are not real constants, but strings instead. Integers are also supported if someone chooses to create the constants themselves.

Examples

Please note that these examples are distilled from test cases that automatically verify our functions still work correctly. This could explain some quirky ones.

#codeexpected result
1get_html_translation_table('HTML_SPECIALCHARS'){'"': '&quot;', '&': '&amp;', '<': '&lt;', '>': '&gt;'}

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