ref: fe2a32889ef6968fb533876bf2492927a9406344
dir: /cmd.c/
#include "quakedef.h"
static bool cmd_wait;
//=============================================================================
/*
============
Cmd_Wait_f
Causes execution of the remainder of the command buffer to be delayed until
next frame. This allows commands like:
bind g "impulse 5 ; +attack ; wait ; -attack ; impulse 2"
============
*/
static void Cmd_Wait_f (cmd_t *c)
{
USED(c);
cmd_wait = true;
}
/*
=============================================================================
COMMAND BUFFER
=============================================================================
*/
static sizebuf_t cmd_text;
/*
============
Cbuf_Init
============
*/
void Cbuf_Init (void)
{
SZ_Alloc (&cmd_text, 65536); // space for commands and script files
}
/*
============
Cbuf_AddText
Adds command text at the end of the buffer
============
*/
void Cbuf_AddText (char *text)
{
int l;
l = strlen(text);
if (cmd_text.cursize + l >= cmd_text.maxsize)
{
Con_Printf ("Cbuf_AddText: overflow\n");
return;
}
SZ_Write (&cmd_text, text, strlen(text));
}
/*
============
Cbuf_InsertText
Adds command text immediately after the current command
Adds a \n to the text
FIXME: actually change the command buffer to do less copying
============
*/
void Cbuf_InsertText (char *text)
{
char *temp = nil;
int templen;
// copy off any commands still remaining in the exec buffer
templen = cmd_text.cursize;
if (templen)
{
temp = Z_Malloc (templen);
memmove(temp, cmd_text.data, templen);
SZ_Clear (&cmd_text);
}
// add the entire text of the file
Cbuf_AddText (text);
// add the copied off data
if (templen)
{
SZ_Write (&cmd_text, temp, templen);
Z_Free (temp);
}
}
/*
============
Cbuf_Execute
============
*/
void Cbuf_Execute (void)
{
int i;
char *text;
char line[1024];
int quotes;
while (cmd_text.cursize)
{
// find a \n or ; line break
text = (char *)cmd_text.data;
quotes = 0;
for (i=0 ; i< cmd_text.cursize ; i++)
{
if (text[i] == '"')
quotes++;
if ( !(quotes&1) && text[i] == ';')
break; // don't break if inside a quoted string
if (text[i] == '\n')
break;
}
memmove(line, text, i);
line[i] = 0;
// delete the text from the command buffer and move remaining commands down
// this is necessary because commands (exec, alias) can insert data at the
// beginning of the text buffer
if (i == cmd_text.cursize)
cmd_text.cursize = 0;
else
{
i++;
cmd_text.cursize -= i;
memmove(text, text+i, cmd_text.cursize);
}
// execute the command line
Cmd_ExecuteString (line, src_command);
if (cmd_wait)
{ // skip out while text still remains in buffer, leaving it
// for next frame
cmd_wait = false;
break;
}
}
}
/*
==============================================================================
SCRIPT COMMANDS
==============================================================================
*/
/*
===============
Cmd_Exec_f
===============
*/
static void
Cmd_Exec_f(cmd_t *c)
{
char *f;
void *mark;
USED(c);
if (Cmd_Argc () != 2)
{
Con_Printf ("exec <filename> : execute a script file\n");
return;
}
mark = Hunk_Mark ();
f = loadhunklmp(Cmd_Argv(1), nil);
if(f == nil){
Con_Printf(va("exec: %s\n", lerr()));
return;
}
Con_Printf ("execing %s\n",Cmd_Argv(1));
Cbuf_InsertText (f);
Hunk_FreeToMark (mark);
}
/*
===============
Cmd_Echo_f
Just prints the rest of the line to the console
===============
*/
static void
Cmd_Echo_f(cmd_t *c)
{
int i;
USED(c);
for (i=1 ; i<Cmd_Argc() ; i++)
Con_Printf ("%s ",Cmd_Argv(i));
Con_Printf ("\n");
}
static char *
CopyString(char *in)
{
char *out;
out = Z_Malloc (strlen(in)+1);
strcpy (out, in);
return out;
}
static void
Cmd_AliasList(char *name, void *v, void *aux)
{
cmd_t *a;
USED(aux);
a = v;
if(iscmd(a) && a->alias != nil)
Con_Printf(" %s : %s\n", name, a->alias);
}
static void
Cmd_ExecAlias_f(cmd_t *a)
{
Cbuf_InsertText(a->alias);
}
/*
===============
Cmd_Alias_f
Creates a new command that executes a command string (possibly ; seperated)
===============
*/
static void
Cmd_Alias_f(cmd_t *t)
{
char *s, cmd[1024];
cmd_t *a;
int i, c;
USED(t);
if(Cmd_Argc() == 1){
Con_Printf ("Current alias commands:\n");
Con_SearchObject("", 0, Cmd_AliasList, nil);
return;
}
s = Cmd_Argv(1);
if(strlen(Cmd_Args()) - strlen(s) >= sizeof(cmd)){
Con_Printf("Alias commands are too long\n");
return;
}
if((a = Con_FindObject(s)) != nil){
if(!iscmd(a) || a->alias == nil){
Con_Printf("Can't register alias %s, already defined\n", s);
return;
}
Z_Free(a->alias);
}
if(a == nil)
a = Cmd_AddCommand(CopyString(s), Cmd_ExecAlias_f);
// copy the rest of the command line
cmd[0] = 0; // start out with a null string
c = Cmd_Argc();
for(i = 2; i < c; i++){
strcat(cmd, Cmd_Argv(i));
if(i != c)
strcat(cmd, " ");
}
strcat(cmd, "\n");
a->alias = CopyString(cmd);
}
/*
=============================================================================
COMMAND EXECUTION
=============================================================================
*/
#define MAX_ARGS 80
static int cmd_argc;
static char *cmd_argv[MAX_ARGS];
static char *cmd_null_string = "";
static char *cmd_args = nil;
cmd_source_t cmd_source;
/*
============
Cmd_Init
============
*/
void Cmd_Init (void)
{
Cmd_AddCommand ("exec", Cmd_Exec_f);
Cmd_AddCommand ("echo", Cmd_Echo_f);
Cmd_AddCommand ("alias", Cmd_Alias_f);
Cmd_AddCommand ("cmd", Cmd_ForwardToServer);
Cmd_AddCommand ("wait", Cmd_Wait_f);
}
/*
============
Cmd_Argc
============
*/
int Cmd_Argc (void)
{
return cmd_argc;
}
/*
============
Cmd_Argv
============
*/
char *Cmd_Argv (int arg)
{
if (arg >= cmd_argc)
return cmd_null_string;
return cmd_argv[arg];
}
/*
============
Cmd_Args
============
*/
char *Cmd_Args (void)
{
return cmd_args;
}
/*
============
Cmd_TokenizeString
Parses the given string into command line tokens.
============
*/
static void
Cmd_TokenizeString(char *text)
{
int i;
// clear the args from the last string
for(i = 0; i < cmd_argc; i++){
Z_Free(cmd_argv[i]);
cmd_argv[i] = nil;
}
cmd_argc = 0;
cmd_args = nil;
while (1)
{
// skip whitespace up to a /n
while (*text && *text <= ' ' && *text != '\n')
{
text++;
}
if (*text == '\n') // a newline seperates commands in the buffer
return;
if (!*text)
return;
if (cmd_argc == 1)
cmd_args = text;
text = COM_Parse (text);
if (!text)
return;
if (cmd_argc < MAX_ARGS)
{
cmd_argv[cmd_argc] = Z_Malloc(strlen(com_token)+1);
strcpy(cmd_argv[cmd_argc], com_token);
cmd_argc++;
}
}
}
/*
============
Cmd_AddCommand
============
*/
cmd_t *
Cmd_AddCommand(char *name, cmdfun_t f)
{
cmd_t *cmd;
if(Con_FindObject(name) != nil){
Con_Printf("Cmd_AddCommand: %s already defined\n", name);
return nil;
}
cmd = Z_Malloc(sizeof *cmd);
cmd->name = name;
cmd->f = f;
Con_AddObject(name, cmd);
return cmd;
}
/*
============
Cmd_ExecuteString
A complete command line has been parsed, so try to execute it
FIXME: lookupnoadd the token to speed search?
============
*/
void
Cmd_ExecuteString (char *text, cmd_source_t src)
{
cmd_t *cmd;
cmd_source = src;
Cmd_TokenizeString (text);
// execute the command line
if(!Cmd_Argc())
return; // no tokens
cmd = Con_FindObject(cmd_argv[0]);
if(cmd != nil && iscmd(cmd)){
cmd->f(cmd);
return;
}
// check cvars
if (!Cvar_Command())
Con_Printf ("Unknown command \"%s\": %s\n", Cmd_Argv(0), text);
}
/*
===================
Cmd_ForwardToServer
Sends the entire command line over to the server
===================
*/
void Cmd_ForwardToServer (cmd_t *c)
{
USED(c);
if (cls.state != ca_connected)
{
Con_Printf ("Can't \"%s\", not connected\n", Cmd_Argv(0));
return;
}
if (cls.demoplayback)
return; // not really connected
MSG_WriteByte (&cls.message, clc_stringcmd);
if(cistrcmp(Cmd_Argv(0), "cmd") != 0)
{
SZ_Print (&cls.message, Cmd_Argv(0));
SZ_Print (&cls.message, " ");
}
if (Cmd_Argc() > 1)
SZ_Print (&cls.message, Cmd_Args());
else
SZ_Print (&cls.message, "\n");
}