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// JS function to convert BBCode and HTML code - http;//coursesweb.net/javascript/
var BBCodeHTML = function() {
var me = this; // stores the object instance
var token_match = /{[A-Z_]+[0-9]*}/ig;
// regular expressions for the different bbcode tokens
var tokens = {
'URL' : '((?:(?:[a-z][a-z\\d+\\-.]*:\\/{2}(?:(?:[a-z0-9\\-._~\\!$&\'*+,;=:@|]+|%[\\dA-F]{2})+|[0-9.]+|\\[[a-z0-9.]+:[a-z0-9.]+:[a-z0-9.:]+\\])(?::\\d*)?(?:\\/(?:[a-z0-9\\-._~\\!$&\'*+,;=:@|]+|%[\\dA-F]{2})*)*(?:\\?(?:[a-z0-9\\-._~\\!$&\'*+,;=:@\\/?|]+|%[\\dA-F]{2})*)?(?:#(?:[a-z0-9\\-._~\\!$&\'*+,;=:@\\/?|]+|%[\\dA-F]{2})*)?)|(?:www\\.(?:[a-z0-9\\-._~\\!$&\'*+,;=:@|]+|%[\\dA-F]{2})+(?::\\d*)?(?:\\/(?:[a-z0-9\\-._~\\!$&\'*+,;=:@|]+|%[\\dA-F]{2})*)*(?:\\?(?:[a-z0-9\\-._~\\!$&\'*+,;=:@\\/?|]+|%[\\dA-F]{2})*)?(?:#(?:[a-z0-9\\-._~\\!$&\'*+,;=:@\\/?|]+|%[\\dA-F]{2})*)?)))',
'LINK' : '([a-z0-9\-\./]+[^"\' ]*)',
'EMAIL' : '((?:[\\w\!\#$\%\&\'\*\+\-\/\=\?\^\`{\|\}\~]+\.)*(?:[\\w\!\#$\%\'\*\+\-\/\=\?\^\`{\|\}\~]|&)+@(?:(?:(?:(?:(?:[a-z0-9]{1}[a-z0-9\-]{0,62}[a-z0-9]{1})|[a-z])\.)+[a-z]{2,6})|(?:\\d{1,3}\.){3}\\d{1,3}(?:\:\\d{1,5})?))',
'TEXT' : '(.*?)',
'SIMPLETEXT' : '([a-zA-Z0-9-+.,_ ]+)',
'INTTEXT' : '([a-zA-Z0-9-+,_. ]+)',
'IDENTIFIER' : '([a-zA-Z0-9-_]+)',
'COLOR' : '([a-z]+|#[0-9abcdef]+)',
'NUMBER' : '([0-9]+)'
};
var bbcode_matches = []; // matches for bbcode to html
var html_tpls = []; // html templates for html to bbcode
var html_matches = []; // matches for html to bbcode
var bbcode_tpls = []; // bbcode templates for bbcode to html
/**
* Turns a bbcode into a regular rexpression by changing the tokens into
* their regex form
*/
var _getRegEx = function(str) {
var matches = str.match(token_match);
var nrmatches = matches.length;
var i = 0;
var replacement = '';
if (nrmatches <= 0) {
return new RegExp(preg_quote(str), 'g'); // no tokens so return the escaped string
}
for(; i < nrmatches; i += 1) {
// Remove {, } and numbers from the token so it can match the
// keys in tokens
var token = matches[i].replace(/[{}0-9]/g, '');
if (tokens[token]) {
// Escape everything before the token
replacement += preg_quote(str.substr(0, str.indexOf(matches[i]))) + tokens[token];
// Remove everything before the end of the token so it can be used
// with the next token. Doing this so that parts can be escaped
str = str.substr(str.indexOf(matches[i]) + matches[i].length);
}
}
replacement += preg_quote(str); // add whatever is left to the string
return new RegExp(replacement, 'gi');
};
/**
* Turns a bbcode template into the replacement form used in regular expressions
* by turning the tokens in $1, $2, etc.
*/
var _getTpls = function(str) {
var matches = str.match(token_match);
var nrmatches = matches.length;
var i = 0;
var replacement = '';
var positions = {};
var next_position = 0;
if (nrmatches <= 0) {
return str; // no tokens so return the string
}
for(; i < nrmatches; i += 1) {
// Remove {, } and numbers from the token so it can match the
// keys in tokens
var token = matches[i].replace(/[{}0-9]/g, '');
var position;
// figure out what $# to use ($1, $2)
if (positions[matches[i]]) {
position = positions[matches[i]]; // if the token already has a position then use that
} else {
// token doesn't have a position so increment the next position
// and record this token's position
next_position += 1;
position = next_position;
positions[matches[i]] = position;
}
if (tokens[token]) {
replacement += str.substr(0, str.indexOf(matches[i])) + '$' + position;
str = str.substr(str.indexOf(matches[i]) + matches[i].length);
}
}
replacement += str;
return replacement;
};
/**
* Adds a bbcode to the list
*/
me.addBBCode = function(bbcode_match, bbcode_tpl) {
// add the regular expressions and templates for bbcode to html
bbcode_matches.push(_getRegEx(bbcode_match));
html_tpls.push(_getTpls(bbcode_tpl));
// add the regular expressions and templates for html to bbcode
html_matches.push(_getRegEx(bbcode_tpl));
bbcode_tpls.push(_getTpls(bbcode_match));
};
/**
* Turns all of the added bbcodes into html
*/
me.bbcodeToHtml = function(str) {
var nrbbcmatches = bbcode_matches.length;
var i = 0;
for(; i < nrbbcmatches; i += 1) {
str = str.replace(bbcode_matches[i], html_tpls[i]);
}
return str;
};
/**
* Turns html into bbcode
*/
me.htmlToBBCode = function(str) {
var nrhtmlmatches = html_matches.length;
var i = 0;
for(; i < nrhtmlmatches; i += 1) {
str = str.replace(html_matches[i], bbcode_tpls[i]);
}
return str;
}
/**
* Quote regular expression characters plus an optional character
* taken from phpjs.org
*/
function preg_quote (str, delimiter) {
return (str + '').replace(new RegExp('[.\\\\+*?\\[\\^\\]$(){}=!<>|:\\' + (delimiter || '') + '-]', 'g'), '\\$&');
}
// adds BBCodes and their HTML
me.addBBCode('[b]{TEXT}[/b]', '<strong>{TEXT}</strong>');
me.addBBCode('[i]{TEXT}[/i]', '<em>{TEXT}</em>');
me.addBBCode('[u]{TEXT}[/u]', '<span style="text-decoration:underline;">{TEXT}</span>');
me.addBBCode('[s]{TEXT}[/s]', '<span style="text-decoration:line-through;">{TEXT}</span>');
me.addBBCode('[color={COLOR}]{TEXT}[/color]', '<span style="color:{COLOR}">{TEXT}</span>');
};
export var bbcodeParser = new BBCodeHTML(); // creates object instance of BBCodeHTML() |