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New cvar expansion code that works in say/say_team commands;

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Command line chars are treated as unsigned now, so you can start a
token with a 'high' char (>127).
This commit is contained in:
Anton E. Gavrilov 2000-07-31 10:24:37 +00:00
parent f8b0302ed6
commit 8bcf348265
1 changed files with 93 additions and 56 deletions
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149
source/cmd.c
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@ -595,7 +595,7 @@ void Cmd_TokenizeString (char *text)
while (1)
{
// skip whitespace up to a /n
while (*text && *text <= ' ' && *text != '\n')
while (*text && *(unsigned char*)text <= ' ' && *text != '\n')
{
text++;
}
@ -725,6 +725,86 @@ char *Cmd_CompleteCommand (char *partial)
return NULL;
}
/*
============
Cmd_ExpandVariables
Expand $fov-like expressions
FIXME: better handling of buffer overflows?
============
*/
// dest must point to a 1024-byte buffer
void Cmd_ExpandVariables (char *data, char *dest)
{
unsigned int c;
char buf[1024];
int i, len;
cvar_t *var, *bestvar;
int quotes = 0;
len = 0;
// parse a regular word
while ( (c = *data) != 0)
{
if (c == '"')
quotes++;
if (c == '$' && !(quotes&1))
{
data++;
// Copy the text after '$' to a temp buffer
i = 0;
buf[0] = 0;
bestvar = NULL;
while ((c = *data) > 32)
{
if (c == '$')
break;
data++;
buf[i++] = c;
buf[i] = 0;
if ((var = Cvar_FindVar(buf)) != 0)
bestvar = var;
if (i >= sizeof(buf)-1)
break;
}
if (bestvar)
{
// check buffer size
if (len + strlen(bestvar->string) >= 1024-1)
break;
strcpy(&dest[len], bestvar->string);
len += strlen(bestvar->string);
i = strlen(bestvar->name);
while (buf[i])
dest[len++] = buf[i++];
}
else
{
// no matching cvar name was found
dest[len++] = '$';
if (len + strlen(buf) >= 1024-1)
break;
strcpy (&dest[len], buf);
len += strlen(buf);
}
}
else
{
dest[len] = c;
data++;
len++;
if (len >= 1024-1)
break;
}
};
dest[len] = 0;
}
/*
============
Cmd_ExecuteString
@ -737,8 +817,14 @@ void Cmd_ExecuteString (char *text)
{
cmd_function_t *cmd;
cmdalias_t *a;
char buf[1024];
#if 0
Cmd_TokenizeString (text);
#else
Cmd_ExpandVariables (text, buf);
Cmd_TokenizeString (buf);
#endif
// execute the command line
if (!Cmd_Argc())
@ -844,11 +930,8 @@ Parse a token out of a string
*/
char *COM_Parse (char *data)
{
int c;
unsigned int c;
int len;
char buf[255];
int i;
cvar_t *var, *bestvar;
len = 0;
com_token[0] = 0;
@ -894,57 +977,11 @@ skipwhite:
// parse a regular word
do
{
// FIXME: only check for $'s when parsing
// command-line text (not entity data!)
if (c == '$')
{
data++;
// Copy the text after '$' to a temp buffer
i = 0;
buf[0] = 0;
bestvar = NULL;
while ((c = *data) > 32)
{
if (c == '$')
break;
data++;
buf[i++] = c;
buf[i] = 0;
if ((var = Cvar_FindVar(buf)))
bestvar = var;
}
if (bestvar)
{
// check buffer size
if (len + strlen(bestvar->string) >= MAX_COM_TOKEN-1)
break;
strcpy(&com_token[len], bestvar->string);
len += strlen(bestvar->string);
i = strlen(bestvar->name);
while (buf[i])
com_token[len++] = buf[i++];
}
else
{
// no matching cvar name was found
com_token[len++] = '$';
if (len + strlen(buf) >= MAX_COM_TOKEN-1)
break;
strcpy (&com_token[len], buf);
len += strlen(buf);
}
}
else
{
com_token[len] = c;
data++;
len++;
if (len >= MAX_COM_TOKEN-1)
break;
}
com_token[len] = c;
data++;
len++;
if (len >= MAX_COM_TOKEN-1)
break;
c = *data;
} while (c>32);