Re: Config file Parser

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Date: Thu, 24 Nov 2005 10:35:48 -0000

"Murali" <maha.murali@gmail.com> wrote in message
news:1132681214.199257.319950@o13g2000cwo.googlegroups.com...
> I need to store the contents of a menu system (main menu, arbitrary
> deep submenus, and each entry has a few attributes) in a simple text
> file. I also need a parser for this file.
[snip]
> * Parser must be in C
> * The C routine will get a long string which has the contents of the
> whole file (not expected to be more than 20 to 30K)
> * Code should be romable, i.e. should not use C functions which
> eventually translate to system calls, i.e. printf is not allowed but
> strlen is fine.
>
> Is there a standard format for storing such information and parsing
> them. The INI file format is natively not heirarchical, and I dont
> think I know of any ROMable parsers for XML in C. In the worst case, I
> will have to come up with my own format, but just wanted to check if
> this problem has already been solved.

XML might be appropriate but probably isn't practical. INI files could work
if you link menus with IDs; for example, something like:

[menu]
title=title
items=item1 item2 item3 item4
...

[item1]
descr=description
submenu=menu2
...

[item2]
descr=another description
attr1=value1
attr2=value2
...

[menu2]
...

While this is easy to parse, the downside is that it is not so simple to
maintain. But there is nothing stopping you from creating a program which
generates the INI file from some other format, where that program is free
from the restrictions of the embedded system.

Alex

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