can i read file from my plugin??

[restart]

i want to read file (such as .txt or .xml), how can i read it?? where i put the files in rockbox??

thank's for your help
regards all

[bluebrother]

use the standard open() / read() functions.

[restart]

use the standard open() / read() functions.

where i must put my .txt file in rockbox??

[GodEater]

Anywhere you like.

[restart]

use the standard open() / read() functions.

i've got errors in using open() and read () functions.

Code: [Select]

VirtualGuide.c:(.text+0x90): undefined reference to `open'
VirtualGuide.c:(.text+0x98): undefined reference to `strcpy'
VirtualGuide.c:(.text+0x9c): undefined reference to `read'

can you help me??

[saratoga]

use the standard open() / read() functions.

i've got errors in using open() and read () functions.

Code: [Select]

VirtualGuide.c:(.text+0x90): undefined reference to `open'
VirtualGuide.c:(.text+0x98): undefined reference to `strcpy'
VirtualGuide.c:(.text+0x9c): undefined reference to `read'

can you help me??

Kind of hard without seeing the code, but I'm going to guess that you didn't try rb->open().

[bluebrother]

There are several plugins accessing files so it shouldn't be hard to find examples. Plugins need to use the plugin API structure pointer for accessing core functions (that pointer is usually named "rb").

[restart]

i am so confused where i should put my files
can anyone help me? i am trying to open file but the path is always not right...

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here it is my code

Code: [Select]

fp = rb->open("help.txt", O_WRONLY|O_CREAT);

and the errors

Code: [Select]

WARNING, bad file name lacks slash: help.txt
WARNING, bad file name lacks slash: help.txt

[mschneider]

It's telling you you really dont have a file specified. A path to a file normally has various "slashes" (C:\Documents and Settings\Administrator), that's what the error is. It really doesnt matter where you put your files as long as they stay there and you dont just have the file name. Instead of "help.txt" you need to put a path to where the file is "/.rockbox/plugins/help.txt".

[bluebrother]

A path to a file normally has various "slashes" (C:\Documents and Settings\Administrator), that's what the error is.

Err, those are backslashes. A backslash is an escape character in C, so if you want to access a file "c:\test.txt" you need to double the \ in the code, i.e. write "c:\\test.txt". But Rockbox internally uses forward slashes (and there is no drive letter), so you get something like in the last example.

[mschneider]

How do you use the read function to read multiple lines from a file?

[saratoga]

How do you use the read function to read multiple lines from a file?

Read in characters and test them to see if they're '\n', count the new lines as you go until you've read however many lines you wanted.

[mschneider]

So does read_line read to the first newline or the whole file?


EDIT: On second thought, what I would like to know is: Is there a function to read files character by character?

[gnu]

Yes: rb->read().