read and write local text files

[dreamfalcon]

Hi!
I need to read and write the content of a text file given by the users.

The idea is to have two options.
Read:
-the user selects a file with a <input type="file">
-using javascript, read the content of the file and process it.

Write:
-build a string and display a "Save as dialog" to save to a text file

I just need it to work in Firefox.
I´m using mootools if it helps.
Can anyone help me?

thx in advance

[acoder]

JavaScript can't access the local file system and read/write local files. You will need some server-side code to be able to upload the file and then read/write it.

[dreamfalcon]

That's a bummer :(

But ok, now the question is how to upload using ajax?
I think I've done it in the pass, but I cant remember how.
I have to use a iframe !?

Thx

[acoder]

Here's one example. It still uses an iframe.

[rnd me]

Hi!
I need to read and write the content of a text file given by the users.

The idea is to have two options.
Read:
-the user selects a file with a <input type="file">
-using javascript, read the content of the file and process it.

Write:
-build a string and display a "Save as dialog" to save to a text file

I just need it to work in Firefox.
I´m using mootools if it helps.
Can anyone help me?

thx in advance

it will be possible in firefox3.
look at the changelog for more information.

[acoder]

I need to read and write the content of a text file given by the users.

The idea is to have two options.
Read:
-the user selects a file with a <input type="file">
-using javascript, read the content of the file and process it.

Write:
-build a string and display a "Save as dialog" to save to a text file

I just need it to work in Firefox.

Looking at this again, maybe XUL will help, e.g. see this link.

[dreamfalcon]

Looking at this again, maybe XUL will help, e.g. see this link.

I already tried, gives as error of permission denied in
"netscape.security.PrivilegeManager.enablePrivileg e("UniversalXPConnect");"

[acoder]

I already tried, gives as error of permission denied in
"netscape.security.PrivilegeManager.enablePrivileg e("UniversalXPConnect");"

You may need to change some settings. It works for me (when I allow from the popup warning).

[shahjapan]

You may need to change some settings. It works for me (when I allow from the popup warning).

you can store anything that u want to store using preferences in firefox.

[rnd me]

here is a save as routine for you: (ff only)

 
function dataUrlStr(data) {
    return "data:x-application/plainText," + escape(data); 
}
window.open(dataUrlStr("hello world"))
 
 

using an unknown mime causes a save/open prompt.


you will likely need a server echo to read the local files.
in asp3 it would be something like

response.binaryWrite(request.binaryRead)

[rnd me]

you can store anything that u want to store using preferences in firefox.

what preferences are you referring to? i couldn't find anything, but i would love to be able to save as described.