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/*
SSCANF by Y_Less
*/
#if defined _sscanf_included
#endinput
#endif
#define _sscanf_included
/*----------------------------------------------------------------------------*-
Function:
sscanf
Params:
string[] - String to extract parameters from.
format[] - Parameter types to get.
{Float,_}:... - Data return variables.
Return:
0 - Successful, not 0 - fail.
Notes:
A fail is either insufficient variables to store the data or insufficient
data for the format string - excess data is disgarded.
A string in the middle of the input data is extracted as a single word, a
string at the end of the data collects all remaining text.
The format codes are:
c - A character.
d, i - An integer.
h, x - A hex number (e.g. a colour).
f - A float.
s - A string.
z - An optional string.
pX - An additional delimiter where X is another character.
'' - Encloses a litteral string to locate.
u - User, takes a name, part of a name or an id and returns the id if they're connected.
Now has IsNumeric integrated into the code.
Added additional delimiters in the form of all whitespace and an
optioanlly specified one in the format string.
-*----------------------------------------------------------------------------*/
stock sscanf(string[], format[], {Float,_}:...)
{
#if defined isnull
if (isnull(string))
#else
if (string[0] == 0 || (string[0] == 1 && string[1] == 0))
#endif
{
return format[0];
}
#pragma tabsize 4
new
formatPos = 0,
stringPos = 0,
paramPos = 2,
paramCount = numargs(),
delim = ' ';
while (string[stringPos] && string[stringPos] <= ' ')
{
stringPos++;
}
while (paramPos < paramCount && string[stringPos])
{
switch (format[formatPos++])
{
case '\0':
{
return 0;
}
case 'i', 'd':
{
new
neg = 1,
num = 0,
ch = string[stringPos];
if (ch == '-')
{
neg = -1;
ch = string[++stringPos];
}
do
{
stringPos++;
if ('0' <= ch <= '9')
{
num = (num * 10) + (ch - '0');
}
else
{
return -1;
}
}
while ((ch = string[stringPos]) > ' ' && ch != delim);
setarg(paramPos, 0, num * neg);
}
case 'h', 'x':
{
new
num = 0,
ch = string[stringPos];
do
{
stringPos++;
switch (ch)
{
case 'x', 'X':
{
num = 0;
continue;
}
case '0' .. '9':
{
num = (num << 4) | (ch - '0');
}
case 'a' .. 'f':
{
num = (num << 4) | (ch - ('a' - 10));
}
case 'A' .. 'F':
{
num = (num << 4) | (ch - ('A' - 10));
}
default:
{
return -1;
}
}
}
while ((ch = string[stringPos]) > ' ' && ch != delim);
setarg(paramPos, 0, num);
}
case 'c':
{
setarg(paramPos, 0, string[stringPos++]);
}
case 'f':
{
setarg(paramPos, 0, _:floatstr(string[stringPos]));
}
case 'p':
{
delim = format[formatPos++];
continue;
}
case '\'':
{
new
end = formatPos - 1,
ch;
while ((ch = format[++end]) && ch != '\'') {}
if (!ch)
{
return -1;
}
format[end] = '\0';
if ((ch = strfind(string, format[formatPos], false, stringPos)) == -1)
{
if (format[end + 1])
{
return -1;
}
return 0;
}
format[end] = '\'';
stringPos = ch + (end - formatPos);
formatPos = end + 1;
}
case 'u':
{
new
end = stringPos - 1,
id = 0,
bool:num = true,
ch;
while ((ch = string[++end]) && ch != delim)
{
if (num)
{
if ('0' <= ch <= '9')
{
id = (id * 10) + (ch - '0');
}
else
{
num = false;
}
}
}
if (num && IsPlayerConnected(id))
{
setarg(paramPos, 0, id);
}
else
{
#if !defined foreach
#define foreach(%1,%2) for (new %2 = 0; %2 < MAX_PLAYERS; %2++) if (IsPlayerConnected(%2))
#define __SSCANF_FOREACH__
#endif
string[end] = '\0';
num = false;
new
name[MAX_PLAYER_NAME];
id = end - stringPos;
foreach (Player, playerid)
{
GetPlayerName(playerid, name, sizeof (name));
if (!strcmp(name, string[stringPos], true, id))
{
setarg(paramPos, 0, playerid);
num = true;
break;
}
}
if (!num)
{
setarg(paramPos, 0, INVALID_PLAYER_ID);
}
string[end] = ch;
#if defined __SSCANF_FOREACH__
#undef foreach
#undef __SSCANF_FOREACH__
#endif
}
stringPos = end;
}
case 's', 'z':
{
new
i = 0,
ch;
if (format[formatPos])
{
while ((ch = string[stringPos++]) && ch != delim)
{
setarg(paramPos, i++, ch);
}
if (!i)
{
return -1;
}
}
else
{
while ((ch = string[stringPos++]))
{
setarg(paramPos, i++, ch);
}
}
stringPos--;
setarg(paramPos, i, '\0');
}
default:
{
continue;
}
}
while (string[stringPos] && string[stringPos] != delim && string[stringPos] > ' ')
{
stringPos++;
}
while (string[stringPos] && (string[stringPos] == delim || string[stringPos] <= ' '))
{
stringPos++;
}
paramPos++;
}
do
{
if ((delim = format[formatPos++]) > ' ')
{
if (delim == '\'')
{
while ((delim = format[formatPos++]) && delim != '\'') {}
}
else if (delim != 'z')
{
return delim;
}
}
}
while (delim > ' ');
return 0;
}
