Perl <-> C language interaction

[Amontec, Larry]

Hi all,

I have to parse ASCII text file and then to use the the parsed data to a
C program. Than the C program will act on an dedicated external USB
device via its dedicated driver.

Perl is just great to do the parse of the text file, since the text file
is not so structured.

My question: how can I interact between a perl script to a C program. I
mean I will have pointer of structure to pass to the C program.

Are there any tutorial or other paper describing the mechanisms and
possibilities we have to do.

Best regards,
Laurent

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[John Bokma]

Hi all,

I have to parse ASCII text file and then to use the the parsed data to a
C program. Than the C program will act on an dedicated external USB
device via its dedicated driver.

Perl is just great to do the parse of the text file, since the text file
is not so structured.

Why not use tools for C? (flex/bison). If you really want a parser, there
is not much difference between C and Perl (ie. you specify a grammer, make
/generate a lexer and a parser, and process the parse tree).

Often using regexps only work in very simple cases. It might be that this
is the case, and again: there are regexp libs for C (even Perl compatible
ones).

My question: how can I interact between a perl script to a C program. I
mean I will have pointer of structure to pass to the C program.

Are there any tutorial or other paper describing the mechanisms and
possibilities we have to do.

There are several ways to interact, you can embed perl in C (perldoc
perlembed), write a module in C with a Perl API, use sockets, shared
memory, XML RPC, etc, etc.

For simple parsing most, if not all, sound like a lot of overhead to me.

 

[Thomas Kratz]

Hi all,

I have to parse ASCII text file and then to use the the parsed data to a
C program. Than the C program will act on an dedicated external USB
device via its dedicated driver.

Perl is just great to do the parse of the text file, since the text file
is not so structured.

My question: how can I interact between a perl script to a C program. I
mean I will have pointer of structure to pass to the C program.

In addition to the pointers already given, have a look at the Inline
module and Inline::C.

Thomas

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[Daniel Zinn]

My question: how can I interact between a perl script to a C program. I
mean I will have pointer of structure to pass to the C program.

You want to have a look at swig .... http://www.swig.org/

Best regards,
Daniel

PS: But you also can do it with a lexer/parser, etc in C/C++