C and XML

Hi,

I understand that XML documents are usually parsed by applications at
run-time, and I wonder if it is possible to have the program change
its behavior based on updates to the XML document? I was told that the
C standard library doesn't provide the tools to do that. However, a C
program can use OS-specific functions which would allow it, and many
OSs have that capability. I'm using RedHat Enterprise Linux 5. Are
such functions available on my OS, and if so, what are those?

Thank you.

Regards,
Rayne

lancer6238@gmail.com writes:

> Hi,
>
> I understand that XML documents are usually parsed by applications at
> run-time, and I wonder if it is possible to have the program change
> its behavior based on updates to the XML document? I was told that the
> C standard library doesn't provide the tools to do that. However, a C
> program can use OS-specific functions which would allow it, and many
> OSs have that capability. I'm using RedHat Enterprise Linux 5. Are
> such functions available on my OS, and if so, what are those?

The functions that are available to you are the same function that are
available everywhere else. There are functions that let you open and read
files, or check the file's last modification timestamp.

It's all a matter of implementing a framework that checks if its XML
configuration file has changed, and if so reloads its contents.



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lancer6238@gmail.com writes:

> Hi,
>
> I understand that XML documents are usually parsed by applications at
> run-time, and I wonder if it is possible to have the program change
> its behavior based on updates to the XML document? I was told that the
> C standard library doesn't provide the tools to do that. However, a C
> program can use OS-specific functions which would allow it, and many
> OSs have that capability. I'm using RedHat Enterprise Linux 5. Are
> such functions available on my OS, and if so, what are those?

It's not native to the OS. You have to add it.
Pick a language, then search for XML support in that language.
Java, perl, etc.

On 04/28/2009 04:28 PM, Maxwell Lol wrote:
> lancer6238@gmail.com writes:
>
>> Hi,
>>
>> I understand that XML documents are usually parsed by applications at
>> run-time, and I wonder if it is possible to have the program change
>> its behavior based on updates to the XML document? I was told that the
>> C standard library doesn't provide the tools to do that. However, a C
>> program can use OS-specific functions which would allow it, and many
>> OSs have that capability. I'm using RedHat Enterprise Linux 5. Are
>> such functions available on my OS, and if so, what are those?
>
> It's not native to the OS. You have to add it.

What do you mean add it, to the OS or what?

> Pick a language, then search for XML support in that language.
> Java, perl, etc.

Why pick a language? The OP is already asking/trying to accomplish XML
parsing in *C* language, What Java, Perl, etc has to do with the
original question?

Why not C? See http://expat.sourceforge.net/
and also C++ http://xerces.apache.org/xerces-c/

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