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/* -*- Mode: C; indent-tabs-mode:nil; c-basic-offset:8 -*- */
/**
*This is an example that shows how to use
*the libcroco css2 parsing library.
*
*To compile it using gcc, type
*
*gcc `croco-config --cflags` `croco-config --libs` -o cssom-example cssom-example.c
*
*Prior to that, you must have compiled and installed libcroco, of course.
*
*@author Dodji Seketeli <dodji@seketeli.org>
*/
/*
*$Id$
*/
#include <string.h>
#include <libcroco.h>
/**
*Displays the usage of this program.
*@param prg_name the name of the program.
*/
void
display_usage (char *prg_name)
{
printf ("\nusage: %s [options] <css file to parse>\n\n", prg_name) ;
printf ("\twhere options are:\n") ;
printf ("\t--help|h\tdisplays this help\n") ;
printf ("\n") ;
}
/**
*Main entry point.
*This function illustrates a way to use libcroco.
*In this example, we will use a CSS Object Model parser
*to parse a cascading style sheet and dump what we have parsed on stdout.
*
*The goal of the object model parser is to parse a css and build
*an abstract tree out of it. One can then walk the tree to perform
*whatever action he wants. In our case, the function used to
*dump the tree on stdout will walk the tree and dump each one of its
*components (a.k.a. css statements).
*/
int
main (int argc, char **argv)
{
short i = 0 ;
enum CRStatus status = CR_OK ;
CROMParser *parser = NULL ;
CRStyleSheet *stylesheet = NULL ;
/*first parse command line arguments*/
for (i = 1 ; i < argc ; i++)
{
if (argv[i][0] != '-')
break ;
if (!strcmp (argv[i],"--help")
|| !strcmp (argv[i], "-h"))
{
display_usage (argv[0]) ;
return 0 ;
}
else
{
display_usage (argv[0]) ;
return 0 ;
}
}
if (i >= argc)
{
display_usage (argv[0]) ;
return 0;
}
/*
*instanciate a new css object model parser.
*/
parser = cr_om_parser_new (NULL) ;
if (!parser)
{
fprintf (stderr,
"Arrgh!!! Couldn't instanciate the parser.\n");
return -1 ;
}
status = cr_om_parser_parse_file (parser,
argv[i] /*the style sheet
file path*/,
CR_ASCII /*the encoding*/,
&stylesheet) ;
if (status == CR_OK && stylesheet)
{
/*
*everything went well,
*so dump the stylesheet on stdout.
*/
cr_stylesheet_dump (stylesheet, stdout) ;
}
if (stylesheet)
{
/*
*free the the memory used to hold the css
*object model
*/
cr_stylesheet_destroy (stylesheet) ;
stylesheet = NULL ;
}
/*free the memory used by the parser*/
cr_om_parser_destroy (parser) ;
parser = NULL ;
return 0 ;
}
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