Reg Exp - JScript

[Harag]

Hi all

Using JScript. is there a better way to write the following reg exp.
or am I doing something right for a change ? lol.

thanks
Al
String.prototype.convertBBCtoHTML = JS_convertBBCtoHTML;

function JS_convertBBCtoHTML() {
var sString = this.toString();

sString = sString.replace(/\[b\]/gi, '<strong>');
sString = sString.replace(/\[\/b\]/gi, '</strong>');
sString = sString.replace(/\[strong\]/gi, '<strong>');
sString = sString.replace(/\[\/strong\]/gi, '</strong>');
sString = sString.replace(/\[i\]/gi, '<em>');
sString = sString.replace(/\[\/i\]/gi, '</em>');
sString = sString.replace(/\[em\]/gi, '<em>');
sString = sString.replace(/\[\/em\]/gi, '</em>');
sString = sString.replace(/\[u\]/gi, '<u>');
sString = sString.replace(/\[\/u\]/gi, '</u>');
sString = sString.replace(/\[s\]/gi, '<strike>');
sString = sString.replace(/\[\/s\]/gi, '</strike>');
sString = sString.replace(/\[pre\]/gi, '<pre>');
sString = sString.replace(/\[\/pre\]/gi, '</pre>');
sString = sString.replace(/\[blockquote\]/gi, '<blockquote>');
sString = sString.replace(/\[\/blockquote\]/gi,
'</blockquote>');

return sString;
}

[Andrew Urquhart]

*Harag* wrote in microsoft.public.inetserver.asp.general:

Hi all

Using JScript. is there a better way to write the following reg exp.
or am I doing something right for a change ? lol.

[snip]

Not tested, but either:

function JS_convertBBCtoHTML() {
var sString = this.toString();
sString = sString.replace(/\[(\/?)(strong|b)\]/ig, "<$1strong>");
sString = sString.replace(/\[(\/?)(em|i)\]/ig, "<$1em>");
sString = sString.replace(/\[(\/?)u\]/ig, "<$1u>");
sString = sString.replace(/\[(\/?)s\]/ig, "<$1strike>");
sString = sString.replace(/\[(\/?)pre\]/ig, "<$1pre>");
sString = sString.replace(/\[(\/?)blockquote\]/ig, "<$1blockquote>");
return sString;
}

(which could be written more succinctly as:)
function JS_convertBBCtoHTML() {
return this.toString().replace(/\[(\/?)(strong|b)\]/ig, "<$1strong>").replace(/\[(\/?)(em|i)\]/ig, "<$1em>").replace(/\[(\/?)u\]/ig, "<$1u>").replace(/\[(\/?)s\]/ig, "<$1strike>").replace(/\[(\/?)pre\]/ig, "<$1pre>").replace(/\[(\/?)blockquote\]/ig, "<$1blockquote>");
}
or if you're feeling more adventurous:

function JS_convertBBCtoHTML() {
var sString = this.toString();
var tags = [['strong','b'],['em','i'],['u'],['strike','s'],['pre'],['blockquote']];
for (var i in tags) {
var item = tags[i];
var objRE = new RegExp("\\[(\\/?)(" + item.join("|") + ")\\]", "ig");
sString = sString.replace(objRE, "<$1" + item[0] + ">");
}
return sString;
}

(Note, this last one will replace [strike] and [/strike] as well)
--
Andrew Urquhart
- FAQ: http://www.aspfaq.com
- Archive: http://tinyurl.com/38kzx (Google Groups)
- Contact me: http://andrewu.co.uk/contact/

[Harag]

On Wed, 08 Sep 2004 18:35:31 GMT, Andrew Urquhart
<us**************************@com.invalid> wrote:

*Harag* wrote in microsoft.public.inetserver.asp.general:

Hi all

Using JScript. is there a better way to write the following reg exp.
or am I doing something right for a change ? lol.

[snip]

Not tested, but either:

function JS_convertBBCtoHTML() {
var sString = this.toString();
sString = sString.replace(/\[(\/?)(strong|b)\]/ig, "<$1strong>");
sString = sString.replace(/\[(\/?)(em|i)\]/ig, "<$1em>");
sString = sString.replace(/\[(\/?)u\]/ig, "<$1u>");
sString = sString.replace(/\[(\/?)s\]/ig, "<$1strike>");
sString = sString.replace(/\[(\/?)pre\]/ig, "<$1pre>");
sString = sString.replace(/\[(\/?)blockquote\]/ig, "<$1blockquote>");
return sString;
}

(which could be written more succinctly as:)
function JS_convertBBCtoHTML() {
return this.toString().replace(/\[(\/?)(strong|b)\]/ig, "<$1strong>").replace(/\[(\/?)(em|i)\]/ig, "<$1em>").replace(/\[(\/?)u\]/ig, "<$1u>").replace(/\[(\/?)s\]/ig, "<$1strike>").replace(/\[(\/?)pre\]/ig, "<$1pre>").replace(/\[(\/?)blockquote\]/ig, "<$1blockquote>");
}
or if you're feeling more adventurous:

function JS_convertBBCtoHTML() {
var sString = this.toString();
var tags = [['strong','b'],['em','i'],['u'],['strike','s'],['pre'],['blockquote']];
for (var i in tags) {
var item = tags[i];
var objRE = new RegExp("\\[(\\/?)(" + item.join("|") + ")\\]", "ig");
sString = sString.replace(objRE, "<$1" + item[0] + ">");
}
return sString;
}

(Note, this last one will replace [strike] and [/strike] as well)

Thanks Andrew.

These different ones are much better. I especially like the last one.

btw I was wondering, when do you decide to use single & double quotes
in your JS ?

I normally do all single quotes in Jscript and double in html codes so
I can do:

out('<table border="0" cellpadding="0">');

Without worring about escaping them, but I've noticed in the above you
use both kinds and was just wondering why?

Thanks again.

Al.

[Andrew Urquhart]

*Harag* wrote in microsoft.public.inetserver.asp.general:

btw I was wondering, when do you decide to use single & double quotes
in your JS ?

I normally do all single quotes in Jscript and double in html codes so
I can do:

out('<table border="0" cellpadding="0">');

Without worring about escaping them, but I've noticed in the above you
use both kinds and was just wondering why?

I normally use " and \" exclusively and leave ' for punctuation, but
just thought the ' looked less cluttered for the example, nothing more
:-)
--
Andrew Urquhart
- FAQ: http://www.aspfaq.com
- Archive: http://tinyurl.com/38kzx (Google Groups)
- Contact me: http://andrewu.co.uk/contact/