5943f4c5e2
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26452 a1c6a512-1295-4272-9138-f99709370657
140 lines
3.6 KiB
C
140 lines
3.6 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2010 Robert Bieber
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef GENERIC_PARSER_H
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#define GENERIC_PARSER_H
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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#define SKIN_MAX_MEMORY 1048576
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/********************************************************************
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****** A global buffer will be used to store the parse tree *******
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*******************************************************************/
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extern char skin_parse_tree[];
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/********************************************************************
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****** Data Structures *********************************************
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*******************************************************************/
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/* Possible types of element in a WPS file */
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enum skin_element_type
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{
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VIEWPORT,
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LINE,
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SUBLINES,
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CONDITIONAL,
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TAG,
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NEWLINE,
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TEXT,
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COMMENT,
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};
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enum skin_errorcode
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{
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MEMORY_LIMIT_EXCEEDED,
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NEWLINE_EXPECTED,
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ILLEGAL_TAG,
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ARGLIST_EXPECTED,
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TOO_MANY_ARGS,
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DEFAULT_NOT_ALLOWED,
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UNEXPECTED_NEWLINE,
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INSUFFICIENT_ARGS,
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INT_EXPECTED,
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SEPERATOR_EXPECTED,
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CLOSE_EXPECTED,
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MULTILINE_EXPECTED
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};
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/* Holds a tag parameter, either numeric or text */
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struct skin_tag_parameter
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{
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enum
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{
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NUMERIC,
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STRING,
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CODE,
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DEFAULT
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} type;
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union
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{
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int numeric;
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char* text;
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struct skin_element* code;
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} data;
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char type_code;
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};
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/* Defines an element of a SKIN file */
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struct skin_element
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{
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/* Defines what type of element it is */
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enum skin_element_type type;
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/* The line on which it's defined in the source file */
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int line;
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/* Text for comments and plaintext */
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char* text;
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/* The tag or conditional name */
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struct tag_info *tag;
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/* Pointer to and size of an array of parameters */
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int params_count;
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struct skin_tag_parameter* params;
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/* Pointer to and size of an array of children */
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int children_count;
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struct skin_element** children;
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/* Link to the next element */
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struct skin_element* next;
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};
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/***********************************************************************
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***** Functions *******************************************************
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**********************************************************************/
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/* Parses a WPS document and returns a list of skin_element
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structures. */
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struct skin_element* skin_parse(char* document);
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/* Memory management functions */
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struct skin_element* skin_alloc_element();
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struct skin_element** skin_alloc_children(int count);
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struct skin_tag_parameter* skin_alloc_params(int count);
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char* skin_alloc_string(int length);
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void skin_free_tree(struct skin_element* root);
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#ifdef __cplusplus
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}
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#endif
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#endif /* GENERIC_PARSER_H */
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