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1/***************************************************************************
2 * __________ __ ___.
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
7 * \/ \/ \/ \/ \/
8 * $Id$
9 *
10 * Copyright (C) 2010 Robert Bieber
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
16 *
17 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
18 * KIND, either express or implied.
19 *
20 ****************************************************************************/
21
22#ifndef GENERIC_PARSER_H
23#define GENERIC_PARSER_H
24
25#define SKIN_MAX_MEMORY 1048576
26
27/********************************************************************
28 ****** A global buffer will be used to store the parse tree *******
29 *******************************************************************/
30extern char skin_parse_tree[];
31
32/********************************************************************
33 ****** Data Structures *********************************************
34 *******************************************************************/
35
36/* Possible types of element in a WPS file */
37enum skin_element_type
38{
39 TEXT,
40 NEWLINE,
41 COMMENT,
42 TAG,
43 CONDITIONAL,
44 SUBLINES
45};
46
47enum skin_errorcode
48{
49 MEMORY_LIMIT_EXCEEDED,
50 NEWLINE_EXPECTED,
51 ILLEGAL_TAG,
52 ARGLIST_EXPECTED,
53 TOO_MANY_ARGS,
54 DEFAULT_NOT_ALLOWED,
55 UNEXPECTED_NEWLINE,
56 INSUFFICIENT_ARGS,
57 INT_EXPECTED,
58 SEPERATOR_EXPECTED,
59 CLOSE_EXPECTED,
60 MULTILINE_EXPECTED
61};
62
63/* Holds a tag parameter, either numeric or text */
64struct skin_tag_parameter
65{
66 enum
67 {
68 NUMERIC,
69 STRING,
70 CODE,
71 DEFAULT
72 } type;
73
74 union
75 {
76 int numeric;
77 char* text;
78 struct skin_element* code;
79 } data;
80
81};
82
83/* Defines an element of a SKIN file */
84struct skin_element
85{
86 /* Defines what type of element it is */
87 enum skin_element_type type;
88
89 /* The line on which it's defined in the source file */
90 int line;
91
92 /* Text for comments and plaintext */
93 char* text;
94
95 /* The tag or conditional name */
96 char* name;
97
98 /* Pointer to and size of an array of parameters */
99 int params_count;
100 struct skin_tag_parameter* params;
101
102 /* Pointer to and size of an array of children */
103 int children_count;
104 struct skin_element** children;
105
106 /* Link to the next element */
107 struct skin_element* next;
108};
109
110/***********************************************************************
111 ***** Functions *******************************************************
112 **********************************************************************/
113
114/* Parses a WPS document and returns a list of skin_element
115 structures. */
116struct skin_element* skin_parse(char* document);
117
118/* Memory management functions */
119struct skin_element* skin_alloc_element();
120struct skin_element** skin_alloc_children(int count);
121struct skin_tag_parameter* skin_alloc_params(int count);
122char* skin_alloc_string(int length);
123
124#endif /* GENERIC_PARSER_H */