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https://git.code.sf.net/p/quake/quakeforge
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104 lines
3.5 KiB
C
104 lines
3.5 KiB
C
/*
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Copyright (C) 1996-1997 Id Software, Inc.
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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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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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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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See file, 'COPYING', for details.
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*/
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#ifndef __QF_script_h
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#define __QF_script_h
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/** \defgroup script Scripts
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\ingroup utils
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Line oriented script parsing. Multiple scripts being parsed at the same
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time is supported.
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*/
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///@{
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#include "QF/qtypes.h"
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typedef struct script_s {
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/// The current (or next when unget is true) token
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struct dstring_s *token;
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/// True if the last token has been pushed back.
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qboolean unget;
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/// current position within the script
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const char *p;
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/// name of the file being processed. used only for error reporting
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const char *file;
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/// line number of the file being processed. used only for error reporting
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/// but updated internally.
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int line;
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/// contains last error message or null if no error
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/// if set, no tokens will be parsed.
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const char *error;
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/// if set, multi line quoted tokens will be treated as errors
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int no_quote_lines;
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/// if set, characters in this string will always be lexed as single
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/// character tokens. If not set, defaults to "{}()':". Set to ""
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/// (empty string) to disable. Not set by default.
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const char *single;
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} script_t;
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/** Return a new script_t object.
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\return A new, blank, script object. Use Script_Start() to initialize.
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*/
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script_t *Script_New (void);
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/** Delete a script_t object.
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\param script The script_t object to be deleted
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Does not free the memory passed to Script_Start().
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*/
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void Script_Delete (script_t *script);
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/** Prepare a script_t object for parsing.
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The caller is responsible for freeing the memory associated with file and
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data when parsing is complete.
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Resets \a script->error
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\param script The script_t object being parsed
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\param file Name of the file being parsed. used only for error reporting
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\param data The script to be parsed
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*/
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void Script_Start (script_t *script, const char *file, const char *data);
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/** Check if a new token is available.
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\param script The script_t object being parsed
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\param crossline True to allow passing \n
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\return True if a token is available, false if end of file
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or end of line (if crossline is false) has been hit
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*/
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qboolean Script_TokenAvailable (script_t *script, qboolean crossline);
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/** Get the next token. Generates an error and exits the program if no token
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is available and crossline is false.
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\param script The script_t object being parsed
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\param crossline True to allow passing \n
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\return True on success, false on failure (no token available)
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*/
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qboolean Script_GetToken (script_t *script, qboolean crossline);
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/** Unget the current token. Only one level of unget is supported.
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\param script The script_t object being parsed
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*/
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void Script_UngetToken (script_t *script);
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/** Return a pointer to the current token.
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\param script The script_t object being parsed
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*/
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const char *Script_Token (script_t *script) __attribute__((pure));
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///@}
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#endif//__QF_script_h
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