440677 - bug with regular expressions check with firefox 3

Status: RESOLVED DUPLICATE of bug 405630

(Core :: JavaScript Engine, defect)

Description

[Tomek Jankowski]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.8.1.14) Gecko/20080404 Firefox/2.0.0.14
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.8.1.14) Gecko/20080404 Firefox/2.0.0.14

Code below always returns 'bad format'. Its just filename check.
Works fine in firefox 2 and ie's 	
var pattern=/^.*[\/|\\][A-Za-z0-9_\-. ]+\.[A-Za-z0-9]+$/i;
var file = $('#new_file'); //jquery - the file input
if(!pattern.test($(file).val()))
{		
alert('bad format');	
}

Reproducible: Always

Steps to Reproduce:
1.
2.
3.



its a part of ajax file uploader.

Comment 1

[Brian Crowder]

I don't know enough about jquery to break this down quickly.  jresig, do you mind simplifying this testcase for me (I'm hoping it will take you seconds instead of minutes)?

Comment 2

[Tomek Jankowski]

basically line $('#new_file') is equal to document.getElementById('new_file')
which is file input field. and tests its value (!pattern.test($(file).val())) againts the regular expression above (/^.*[\/|\\][A-Za-z0-9_\-. ]+\.[A-Za-z0-9]+$/i;). It use to work with various browsers, but it doesnt with firefox 3.

Comment 3

[Brian Crowder]

Tomek:  For what input(s) does the expression fail, then?

Comment 4

[Brian Crowder]

/^.*[\/|\\][A-Za-z0-9_\-. ]+\.[A-Za-z0-9]+$/i.test("/a.a")

That seems to work correctly for me (returning true, not false).

Comment 5

[Brian Crowder]

Incidentally, since you're using /i, you needn't do A-Za-z, just A-Z will suffice.  :)  Please provide an example like the one I gave in comment #4, so that I can see the regexp and string which you think -should- match, but which doesn't.

Thanks,
  Brian

Comment 6

[Tomek Jankowski]

input is any input field, the content (value) of that input is path to the file, basically this regular expression check use to work with paths to files and file names and now it doesnt. It fails (only in firefox 3) and it's not important what happens later mate, as it should not fail. Example values: C:\my_file.jpg or /home/some_folder/my_file.pdf

Comment 7

[Robert Longson [:longsonr]]

Firefox 3 input type="file" elements do not contain the full path to files any more, only the file name. 

I suspect therefore that this is a duplicate of bug 405630 and that you will need to change your validation logic to suit.

Comment 8

[Brian Crowder]

I agree with comment #7