mirror of
https://git.code.sf.net/p/quake/quakeforge
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93c9f96416
structure to help tidy the command buffer struct up a bit, fixed a few bugs and probably created 100 more. A lot of things were changed to allow embedded commands: - Old buffers on the stack are left alone for Cbuf_ExecuteStack to clean up. This is so return values can be extracted from them. - The imperative flag has been added. An imperative buffer and all buffers following it can not be paused with the wait command. - The returning flag and retval dstring have been added. If a buffer returned something, the flag will be set. - The return command was added so there was something to use in the substitution. Return nukes all loop buffers since they don't really count as independent functions, sets the return value on the top buffer, and clears it. - Who knows what else.
191 lines
6.4 KiB
C
191 lines
6.4 KiB
C
/*
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cmd.h
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Command buffer and command execution
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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
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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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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.
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See the 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:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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$Id$
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*/
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#ifndef __cmd_h
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#define __cmd_h
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#include "QF/qtypes.h"
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typedef struct cmd_localvar_s {
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struct dstring_s *key, *value;
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} cmd_localvar_t;
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typedef struct cmd_token_s {
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struct dstring_s *original, *processed; // Token before and after processing
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unsigned int state; // Will be used later
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} cmd_token_t;
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typedef struct cmd_buffer_s {
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// Data
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struct dstring_s *buffer; // Actual text
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unsigned int argc, maxargc; // Number of args, number of args allocated
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struct cmd_token_s **argv; // Tokens
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struct dstring_s *realline; // Actual command being processed
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struct dstring_s *line; // Reassembled line
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struct dstring_s *looptext; // If a looping buffer, the text we are looping on
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struct dstring_s *retval; // Return value
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unsigned int *args; // Array of positions of each token in composite line
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struct hashtab_s *locals; // Local variables
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// Flags
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qboolean imperative; // Execution cannot be paused
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qboolean wait; // Execution paused until next frame
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qboolean legacy; // Backwards compatible with old console buffer
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qboolean ownvars; // Buffer has its own private local variables
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qboolean loop; // Buffer loops itself
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qboolean returning; // Buffer is returning a value
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// Stack
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struct cmd_buffer_s *prev, *next; // Neighboring buffers in stack
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} cmd_buffer_t;
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//===========================================================================
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/*
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Any number of commands can be added in a frame, from several different sources.
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Most commands come from either keybindings or console line input, but remote
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servers can also send across commands and entire text files can be execed.
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The + command line options are also added to the command buffer.
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The game starts with a Cbuf_AddText ("exec quake.rc\n"); Cbuf_Execute ();
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*/
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void Cbuf_Init (void);
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// allocates an initial text buffer that will grow as needed
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void Cbuf_AddTextTo (cmd_buffer_t *buffer, const char *text);
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void Cbuf_AddText (const char *text);
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// as new commands are generated from the console or keybindings,
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// the text is added to the end of the command buffer.
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void Cbuf_InsertText (const char *text);
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// when a command wants to issue other commands immediately, the text is
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// inserted at the beginning of the buffer, before any remaining unexecuted
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// commands.
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void Cbuf_Execute_Sets (void);
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void Cbuf_Execute (void);
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// Pulls off \n terminated lines of text from the command buffer and sends
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// them through Cmd_ExecuteString. Stops when the buffer is empty.
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// Normally called once per frame, but may be explicitly invoked.
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// Do not call inside a command function!
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//===========================================================================
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/*
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Command execution takes a null terminated string, breaks it into tokens,
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then searches for a command or variable that matches the first token.
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Commands can come from three sources, but the handler functions may choose
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to dissallow the action or forward it to a remote server if the source is
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not apropriate.
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*/
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typedef void (*xcommand_t) (void);
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typedef enum {
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src_client, // came in over a net connection as a clc_stringcmd
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// host_client will be valid during this state.
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src_command, // from the command buffer
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} cmd_source_t;
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extern cmd_source_t cmd_source;
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void Cmd_Init_Hash (void);
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void Cmd_Init (void);
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void cl_Cmd_Init (void);
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void Cmd_AddCommand (const char *cmd_name, xcommand_t function, const char *description);
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// called by the init functions of other parts of the program to
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// register commands and functions to call for them.
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// The cmd_name is referenced later, so it should not be in temp memory
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// if function is NULL, the command will be forwarded to the server
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// as a clc_stringcmd instead of executed locally
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qboolean Cmd_Exists (const char *cmd_name);
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// used by the cvar code to check for cvar / command name overlap
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const char *Cmd_CompleteCommand (const char *partial);
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// attempts to match a partial command for automatic command line completion
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// returns NULL if nothing fits
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int Cmd_CompleteAliasCountPossible (const char *partial);
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const char **Cmd_CompleteAliasBuildList (const char *partial);
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int Cmd_CompleteCountPossible (const char *partial);
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const char **Cmd_CompleteBuildList (const char *partial);
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const char *Cmd_CompleteAlias (const char *partial);
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// Enhanced console completion by Fett erich@heintz.com
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// Added by EvilTypeGuy eviltypeguy@qeradiant.com
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int Cmd_Argc (void);
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const char *Cmd_Argv (int arg);
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const char *Cmd_Args (int start);
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const char *Cmd_Argu (int arg);
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// The functions that execute commands get their parameters with these
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// functions. Cmd_Argv () will return an empty string, not a NULL
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// if arg > argc, so string operations are always safe.
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int Cmd_CheckParm (const char *parm);
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// Returns the position (1 to argc-1) in the command's argument list
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// where the given parameter apears, or 0 if not present
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void Cmd_TokenizeString (const char *text, qboolean legacy);
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// Takes a null terminated string. Does not need to be /n terminated.
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// breaks the string up into arg tokens.
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void Cmd_ExecuteString (const char *text, cmd_source_t src);
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// Parses a single line of text into arguments and tries to execute it.
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// The text can come from the command buffer, a remote client, or stdin.
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void Cmd_ForwardToServer (void);
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// adds the current command line as a clc_stringcmd to the client message.
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// things like godmode, noclip, etc, are commands directed to the server,
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// so when they are typed in at the console, they will need to be forwarded.
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void Cmd_StuffCmds_f (void);
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void Cmd_Exec_File (const char *path);
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extern char *com_token;
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const char *COM_Parse (const char *data);
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extern struct cvar_s *cmd_warncmd;
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extern cmd_buffer_t *cmd_legacybuffer; // Allow access to the legacy buffer as an alternate console buffer
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#endif // __cmd_h
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