1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
|
/* -*- Mode: C; indent-tabs-mode:nil; c-basic-offset:8 -*- */
/**
*This is an example that shows how to use
*the CSSOM api of the libcroco CSS2 parsing library.
*It just parses the CSS document given in argument and
*it dumps it (serializes) it on the screen.
*
*To compile it using gcc, type
*
*gcc -g `croco-config --cflags` `croco-config --libs` -o cssom-example-1 cssom-example-1.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 ;
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;
}
/*****************************************************
*Enough plumbering... now, the real libcroco stuffs.
***************************************************/
/*
*What we want here is to simply parse
*a CSS document using the cssom api.
*/
status = cr_om_parser_simply_parse_file ((const guchar*)argv[i] /*sheet*/,
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 ;
}
return 0 ;
}
|
