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4658f4f9a1
It is now possible to use #ifdef/#ifndef to exclude some part of the file. The implementation uses a stack to track conditionals so it is possible to use nested constructs.
88 lines
2.5 KiB
C
88 lines
2.5 KiB
C
/* menuparser.h
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*
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* Copyright (c) 2012 Christophe Curis
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef _MENUPARSER_H_INCLUDED
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#define _MENUPARSER_H_INCLUDED
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/*
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* This file is not part of WINGs public API
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*
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* It defines internal things for the Menu Parser, the public API is
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* located in WINGs/WUtil.h as usual
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*/
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#define MAXLINE 1024
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#define MAX_NESTED_INCLUDES 16 // To avoid infinite includes case
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#define MAX_NESTED_MACROS 24 // To avoid infinite loop inside macro expansions
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#define MAX_MACRO_ARG_COUNT 32 // Limited by design
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typedef struct w_parser_macro WParserMacro;
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typedef void WParserMacroFunction(WParserMacro *this, WMenuParser parser);
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struct w_menu_parser {
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WMenuParser include_file;
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WMenuParser parent_file;
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const char *include_default_paths;
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const char *file_name;
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FILE *file_handle;
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int line_number;
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WParserMacro *macros;
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struct {
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/* Conditional text parsing is implemented using a stack of the
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skip states for each nested #if */
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int depth;
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struct {
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Bool skip;
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char name[8];
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int line;
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} stack[32];
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} cond;
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char *rd;
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char line_buffer[MAXLINE];
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};
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struct w_parser_macro {
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WParserMacro *next;
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char name[64];
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WParserMacroFunction *function;
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int arg_count;
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#ifdef DEBUG
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int usage_count;
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#endif
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unsigned char value[MAXLINE * 4];
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};
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Bool menu_parser_skip_spaces_and_comments(WMenuParser parser);
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void menu_parser_register_preset_macros(WMenuParser parser);
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void menu_parser_define_macro(WMenuParser parser);
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void menu_parser_free_macros(WMenuParser parser);
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WParserMacro *menu_parser_find_macro(WMenuParser parser, const char *name);
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void menu_parser_expand_macro(WMenuParser parser, WParserMacro *macro,
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char *write_buf, int write_buf_size);
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int isnamechr(char ch); // Check if char is valid character for a macro name
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#endif /* _MENUPARSER_H_INCLUDED */
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