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GetUnicodeBytesFromChar Improvements
GetUnicodeBytesFromChar Improvements
The function GetUnicodeBytesFromChar (shown at the very below) is a really Ugly and rather in-efficient function using way more performance than is actually required. I was playing around with my hack tried to find an alternative to the function.
The Improved function is much faster because of the reasons below:
It's actually pretty simple crack for this ugly function.
The Improved function is much faster because of the reasons below:
- Switch statements loses performance over 7 switched (x86 Architecture thing)
- The function uses reference for the output which is proven to be faster because no memory have to be created.
- Because this function is not so simple it can easily be inline meaning no memory have to be copied somewhere then read elsewhere for each character.
- It also gain performance because x86 architecture is familiar with multiplying by 4(32 bits, 4 Bytes) and can do this very fast.
- Its short nice code that is not filled with cases
Code:
void GetUnicodeBytesFromChar(char curChar, WORD& bOut)
{
bOut = (WORD)curChar * 4;
}
Code:
void GetUnicodeBytesFromChar(int curChar, BYTE *bOut) {
if (!bOut) return;
switch (curChar)
{
case ' ': bOut[0] = 0x80; bOut[1] = 0x00; break;
case '0': bOut[0] = 0xC0; bOut[1] = 0x00; break;
case '1': bOut[0] = 0xC4; bOut[1] = 0x00; break;
case '2': bOut[0] = 0xC8; bOut[1] = 0x00; break;
case '3': bOut[0] = 0xCC; bOut[1] = 0x00; break;
case '4': bOut[0] = 0xD0; bOut[1] = 0x00; break;
case '5': bOut[0] = 0xD4; bOut[1] = 0x00; break;
case '6': bOut[0] = 0xD8; bOut[1] = 0x00; break;
case '7': bOut[0] = 0xDC; bOut[1] = 0x00; break;
case '8': bOut[0] = 0xE0; bOut[1] = 0x00; break;
case '9': bOut[0] = 0xE4; bOut[1] = 0x00; break;
case 'A': bOut[0] = 0x04; bOut[1] = 0x01; break;
case 'B': bOut[0] = 0x08; bOut[1] = 0x01; break;
case 'C': bOut[0] = 0x0C; bOut[1] = 0x01; break;
case 'D': bOut[0] = 0x10; bOut[1] = 0x01; break;
case 'E': bOut[0] = 0x14; bOut[1] = 0x01; break;
case 'F': bOut[0] = 0x18; bOut[1] = 0x01; break;
case 'G': bOut[0] = 0x1C; bOut[1] = 0x01; break;
case 'H': bOut[0] = 0x20; bOut[1] = 0x01; break;
case 'I': bOut[0] = 0x24; bOut[1] = 0x01; break;
case 'J': bOut[0] = 0x28; bOut[1] = 0x01; break;
case 'K': bOut[0] = 0x2C; bOut[1] = 0x01; break;
case 'L': bOut[0] = 0x30; bOut[1] = 0x01; break;
case 'M': bOut[0] = 0x34; bOut[1] = 0x01; break;
case 'N': bOut[0] = 0x38; bOut[1] = 0x01; break;
case 'O': bOut[0] = 0x3C; bOut[1] = 0x01; break;
case 'P': bOut[0] = 0x40; bOut[1] = 0x01; break;
case 'Q': bOut[0] = 0x44; bOut[1] = 0x01; break;
case 'R': bOut[0] = 0x48; bOut[1] = 0x01; break;
case 'S': bOut[0] = 0x4C; bOut[1] = 0x01; break;
case 'T': bOut[0] = 0x50; bOut[1] = 0x01; break;
case 'U': bOut[0] = 0x54; bOut[1] = 0x01; break;
case 'V': bOut[0] = 0x58; bOut[1] = 0x01; break;
case 'W': bOut[0] = 0x5C; bOut[1] = 0x01; break;
case 'X': bOut[0] = 0x60; bOut[1] = 0x01; break;
case 'Y': bOut[0] = 0x64; bOut[1] = 0x01; break;
case 'Z': bOut[0] = 0x68; bOut[1] = 0x01; break;
case 'a': bOut[0] = 0x84; bOut[1] = 0x01; break;
case 'b': bOut[0] = 0x88; bOut[1] = 0x01; break;
case 'c': bOut[0] = 0x8C; bOut[1] = 0x01; break;
case 'd': bOut[0] = 0x90; bOut[1] = 0x01; break;
case 'e': bOut[0] = 0x94; bOut[1] = 0x01; break;
case 'f': bOut[0] = 0x98; bOut[1] = 0x01; break;
case 'g': bOut[0] = 0x9C; bOut[1] = 0x01; break;
case 'h': bOut[0] = 0xA0; bOut[1] = 0x01; break;
case 'i': bOut[0] = 0xA4; bOut[1] = 0x01; break;
case 'j': bOut[0] = 0xA8; bOut[1] = 0x01; break;
case 'k': bOut[0] = 0xAC; bOut[1] = 0x01; break;
case 'l': bOut[0] = 0xB0; bOut[1] = 0x01; break;
case 'm': bOut[0] = 0xB4; bOut[1] = 0x01; break;
case 'n': bOut[0] = 0xB8; bOut[1] = 0x01; break;
case 'o': bOut[0] = 0xBC; bOut[1] = 0x01; break;
case 'p': bOut[0] = 0xC0; bOut[1] = 0x01; break;
case 'q': bOut[0] = 0xC4; bOut[1] = 0x01; break;
case 'r': bOut[0] = 0xC8; bOut[1] = 0x01; break;
case 's': bOut[0] = 0xCC; bOut[1] = 0x01; break;
case 't': bOut[0] = 0xD0; bOut[1] = 0x01; break;
case 'u': bOut[0] = 0xD4; bOut[1] = 0x01; break;
case 'v': bOut[0] = 0xD8; bOut[1] = 0x01; break;
case 'w': bOut[0] = 0xDC; bOut[1] = 0x01; break;
case 'x': bOut[0] = 0xE0; bOut[1] = 0x01; break;
case 'y': bOut[0] = 0xE4; bOut[1] = 0x01; break;
case 'z': bOut[0] = 0xE8; bOut[1] = 0x01; break;
case '}': bOut[0] = 0xF4; bOut[1] = 0x01; break;
case '²': bOut[0] = 0xC8; bOut[1] = 0x02; break;
case '³': bOut[0] = 0xCC; bOut[1] = 0x02; break;
case '{': bOut[0] = 0xEC; bOut[1] = 0x01; break;
case '[': bOut[0] = 0x6C; bOut[1] = 0x01; break;
case ']': bOut[0] = 0x74; bOut[1] = 0x01; break;
case '~': bOut[0] = 0xF8; bOut[1] = 0x01; break;
case '\\': bOut[0] = 0x70; bOut[1] = 0x01; break;
case '|': bOut[0] = 0xF0; bOut[1] = 0x01; break;
case 'µ': bOut[0] = 0xD4; bOut[1] = 0x02; break;
case '@': bOut[0] = 0x00; bOut[1] = 0x01; break;
case '€': bOut[0] = 0x00; bOut[1] = 0x02; break;
case '=': bOut[0] = 0xF4; bOut[1] = 0x00; break;
case '!': bOut[0] = 0x84; bOut[1] = 0x00; break;
case '"': bOut[0] = 0x88; bOut[1] = 0x00; break;
case '§': bOut[0] = 0x9C; bOut[1] = 0x02; break;
case '$': bOut[0] = 0x90; bOut[1] = 0x00; break;
case '%': bOut[0] = 0x94; bOut[1] = 0x00; break;
case '&': bOut[0] = 0x98; bOut[1] = 0x00; break;
case '/': bOut[0] = 0xBC; bOut[1] = 0x00; break;
case '(': bOut[0] = 0xA0; bOut[1] = 0x00; break;
case ')': bOut[0] = 0xA4; bOut[1] = 0x00; break;
case '*': bOut[0] = 0xA8; bOut[1] = 0x00; break;
case ';': bOut[0] = 0xEC; bOut[1] = 0x00; break;
case '_': bOut[0] = 0x7C; bOut[1] = 0x01; break;
case ':': bOut[0] = 0xE8; bOut[1] = 0x00; break;
case '\'': bOut[0] = 0x9C; bOut[1] = 0x00; break;
case '?': bOut[0] = 0xFC; bOut[1] = 0x00; break;
case '°': bOut[0] = 0xC0; bOut[1] = 0x02; break;
case '`': bOut[0] = 0x80; bOut[1] = 0x01; break;
case '>': bOut[0] = 0xF8; bOut[1] = 0x00; break;
case '^': bOut[0] = 0x78; bOut[1] = 0x01; break;
case '+': bOut[0] = 0xAC; bOut[1] = 0x00; break;
case '-': bOut[0] = 0xB4; bOut[1] = 0x00; break;
case ',': bOut[0] = 0xB0; bOut[1] = 0x00; break;
case '.': bOut[0] = 0xB8; bOut[1] = 0x00; break;
case '#': bOut[0] = 0x8C; bOut[1] = 0x00; break;
case 'ß': bOut[0] = 0x7C; bOut[1] = 0x03; break;
case '<': bOut[0] = 0xF0; bOut[1] = 0x00; break;
default: bOut[0] = 0xFC; bOut[1] = 0x00; break;//'?'
}
}
Originally Posted by XarutoUsoCrack
