utils.inc

IsNumeric(const string[])
{
    for (new i = 0, j = strlen(string); i < j; i++)
    {
        if (string[i] > '9' || string[i] < '0') return 0;
    }
    return 1;
}

ReturnUser(text[], playerid = INVALID_PLAYER_ID)
{
    new pos = 0;
    while (text[pos] < 0x21) // Strip out leading spaces
    {
        if (text[pos] == 0) return INVALID_PLAYER_ID; // No passed text
        pos++;
    }
    new userid = INVALID_PLAYER_ID;
    if (IsNumeric(text[pos])) // Check whole passed string
    {
        // If they have a numeric name you have a problem (although names are checked on id failure)
        userid = strval(text[pos]);
        if (userid >=0 && userid < MAX_PLAYERS)
        {
            if(!IsPlayerConnected(userid))
            {
                /*if (playerid != INVALID_PLAYER_ID)
                {
                    SendClientMessage(playerid, 0xFF0000AA, "User not connected");
                }*/
                userid = INVALID_PLAYER_ID;
            }
            else
            {
                return userid; // A player was found
            }
        }
        /*else
        {
            if (playerid != INVALID_PLAYER_ID)
            {
                SendClientMessage(playerid, 0xFF0000AA, "Invalid user ID");
            }
            userid = INVALID_PLAYER_ID;
        }
        return userid;*/
        // Removed for fallthrough code
    }
    // They entered [part of] a name or the id search failed (check names just incase)
    new len = strlen(text[pos]);
    new count = 0;
    new name[MAX_PLAYER_NAME];
    for (new i = 0; i < MAX_PLAYERS; i++)
    {
        if (IsPlayerConnected(i))
        {
            GetPlayerName(i, name, sizeof (name));
            if (strcmp(name, text[pos], true, len) == 0) // Check segment of name
            {
                if (len == strlen(name)) // Exact match
                {
                    return i; // Return the exact player on an exact match
                    // Otherwise if there are two players:
                    // Me and MeYou any time you entered Me it would find both
                    // And never be able to return just Me's id
                }
                else // Partial match
                {
                    count++;
                    userid = i;
                }
            }
        }
    }
    if (count != 1)
    {
        if (playerid != INVALID_PLAYER_ID)
        {
            if (count)
            {
                SendClientMessage(playerid, 0xFF0000AA, "Multiple users found, please narrow earch");
            }
            else
            {
                SendClientMessage(playerid, 0xFF0000AA, "No matching user found");
            }
        }
        userid = INVALID_PLAYER_ID;
    }
    return userid; // INVALID_USER_ID for bad return
}

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;
}