void readNumber()

in src/main/cpp/launcher/windows/src/ExtractUtils.c [165:212]
41 lines of code
8 McCabe index (conditional complexity)

void readNumber(LauncherProperties * props, DWORD * result) {
    if(isOK(props)) {
        
        SizedString * numberString = createSizedString();
        DWORD i =0;
        DWORD number = 0;
        
        readString(props, numberString, 0);
        if(!isOK(props)) {
            freeSizedString(&numberString);
            writeMessageA(props, OUTPUT_LEVEL_DEBUG, 1,
                    "Error!! Can`t read number string. Most probably integrity error.", 1);
            return;
        }
        
        if(numberString->bytes==NULL) {
            freeSizedString(&numberString);
            writeMessageA(props, OUTPUT_LEVEL_DEBUG, 1,
                    "Error!! Can`t read number string (it can`t be NULL). Most probably integrity error.", 1);
            props->status = ERROR_INTEGRITY;
            return;
        }
        
        
        for(;i<numberString->length;i++) {
            char c = numberString->bytes[i];
            if(c>='0' && c<='9') {
                number = number * 10 + (c - '0');
            } else if(c==0) {
                // we have reached the end of number section
                writeMessageA(props, OUTPUT_LEVEL_DEBUG, 1,
                        "Can`t read number from string (it contains zero character):", 1);
                writeMessageA(props, OUTPUT_LEVEL_DEBUG, 1, numberString->bytes, 1);
                props->status = ERROR_INTEGRITY;
                break;
            } else {
                // unexpected...
                writeMessageA(props, OUTPUT_LEVEL_DEBUG, 1,
                        "Can`t read number from string (unexpected error):", 1);
                writeMessageA(props, OUTPUT_LEVEL_DEBUG, 1, numberString->bytes, 1);
                props->status = ERROR_INTEGRITY;
                break;
            }
        }
        freeSizedString(&numberString);
        *result = number;
    }
}