[Lordzy]

Quote:

Originally Posted by Sreyas isValidDate Okay this function is created on the behalf of this discussion.It validates a date which is passed as string to the function.It doesn't need any delimiter or format to specify actually.The function will identify date,month and year automatically. Parameters: str - date in string PHP код: bool:isValidDate(str[])//by Sreyas {     new count,i,j;     new daysinmonth[12]={31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};     new parts[3][5],Index_Beg;     new bool:legit;          while(str[i]!='\0')     {         if(str[i] < 48 || str[i] > 57)         {             count++;             strmid(parts[j], str, Index_Beg, i, sizeof(parts[]));             Index_Beg = i+1;             j++;                        }         i++;         if(str[i]=='\0')         {                          strmid(parts[j], str, Index_Beg, i, sizeof(parts[]));                      }     }          if(count != 2) return false;     new number[3];          for(i=0;i<3;i++)     {         number[i] = strval(parts[i]);         if(number[i] == 0)return false;     }     new y,m,d;     y = m = d = -1;          for(i=0;i<3;i++)     {         if(number[i]>31)         {                            if(y != -1) return false;             y = i;                      }     }     for(i=0;i<3;i++)     {         if(i == y) continue;         if(number[i] < 13 && number[i] > 0)         {             if(m == -1)             {                 m = i;             }             else             {                 d = i;                              }         }     }               if(y==-1)     {         for(i=0;i<3;i++)         {             if(i==d||i==m) continue;             y = i;                      }     }     if(d==-1)     {         for(i=0;i<3;i++)         {             if(i==y||i==m) continue;             d = i;         }     }     if(number[y] % 400 == 0 || (number[y] % 100 != 0 && number[y] % 4 == 0))         daysinmonth[1]=29;     if( number[m]<13 && number[d] <= daysinmonth[number[m]-1])         legit=true;          if (!legit) return false;     return true; }

Good idea, but you should check your function failing at some invalid dates which causes array index out of bounds.

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An even more faster version (1.5 times) of the above IsValidDate that accepts any date-format and separators.

(non-sscanf version)
IsValidDate - Returns true on valid dates, false for invalid ones.

Parameters:
dStr[] - Date as string.
size = sizeof(dStr)) - String size. (optional, default value = sizeof(dStr) )

pawn Код:

stock bool:IsValidDate(dStr[], size = sizeof(dStr)) {

    new
        monthDays[12] = {
            31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
        },
        temp_YMD[3],
        temp_Pos    = 0,
        temp_ePos   = 0,
        temp_Index  = 0,
        temp_shortStr[5]
    ;
    do {
    
        while(dStr[temp_ePos] >= 48 && dStr[temp_ePos] <= 57) {
        
            if(++temp_ePos >= size) {
            
                temp_ePos = size - 1;
                break;
            }
        }
        strmid(temp_shortStr, dStr, temp_Pos, temp_ePos, sizeof(temp_shortStr));
        temp_YMD[temp_Index++] = strval(temp_shortStr);
        temp_Pos = ++temp_ePos;
    }
    while(dStr[temp_ePos] != '\0' && temp_Index < 3);

    temp_ePos = temp_Pos = -1;
    for(temp_Index = 0; temp_Index < 3; temp_Index++) {
    
        if(temp_YMD[temp_Index] > 1750) {
        
            if((temp_YMD[temp_Index] % 400) == 0 || ((temp_YMD[temp_Index] % 100) != 0 && (temp_YMD[temp_Index] % 4) == 0))
                monthDays[1] = 29;
                
        }
        else if(temp_YMD[temp_Index] > 12)
            temp_Pos = temp_Index;
        else
            if(temp_ePos == -1)
                temp_ePos = temp_Index;
            else
                temp_Pos = temp_Index;
    }
    if(temp_ePos == -1 || temp_Pos == -1)
        return false;

    if(temp_YMD[temp_ePos] < 1 || temp_YMD[temp_ePos] > 12)
        return false;

    if(temp_YMD[temp_Pos] < 1 || temp_YMD[temp_Pos] > monthDays[temp_YMD[temp_ePos] - 1])
        return false;

    return true;
}

sscanf supported version. (1.5 times faster than the above non-sscanf version)
Parameters:
dStr[] - Date, as string.

pawn Код:

stock bool:IsValidDate(dStr[]) {

    new
        monthDays[12] = {
            31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
        },
        temp_YMD[3],
        temp_Pos    = 0,
        temp_ePos   = 0,
        temp_Index  = 0
    ;
        //Thought about implementing SSCANF_QUIET, but it requires spaces to work "currently".
    for(temp_Index = strlen(dStr) - 1; temp_Index != 0; temp_Index--) {

        if(!(dStr[temp_Index] >= 48 && dStr[temp_Index] <= 57))
            dStr[temp_Index] = ' ';
    }
    if(sscanf(dStr, "iii", temp_YMD[0], temp_YMD[1], temp_YMD[2]))
        return false;

    temp_ePos = temp_Pos = -1;
    for(temp_Index = 0; temp_Index < 3; temp_Index++) {

        if(temp_YMD[temp_Index] > 1750) {

            if((temp_YMD[temp_Index] % 400) == 0 || ((temp_YMD[temp_Index] % 100) != 0 && (temp_YMD[temp_Index] % 4) == 0))
                monthDays[1] = 29;

        }
        else if(temp_YMD[temp_Index] > 12)
            temp_Pos = temp_Index;
        else
            if(temp_ePos == -1)
                temp_ePos = temp_Index;
            else
                temp_Pos = temp_Index;
    }
    if(temp_ePos == -1 || temp_Pos == -1)
        return false;

    if(temp_YMD[temp_ePos] < 1 || temp_YMD[temp_ePos] > 12)
        return false;

    if(temp_YMD[temp_Pos] < 1 || temp_YMD[temp_Pos] > monthDays[temp_YMD[temp_ePos] - 1])
        return false;

    return true;
}

PS : It's 3:45 AM right now, I've no idea what I'm doing totally...I think I should be in bed right now...