Function decodeHex

crengine/src/lvstring.cpp:872–883

decode LEN hex digits, return decoded number, -1 if invalid

// decode LEN hex digits, return decoded number, -1 if invalid
int decodeHex( const lChar16 * str, int len ) {
    int n = 0;
    for ( int i=0; i<len; i++ ) {
        if ( !str[i] )
            return -1;
        int d = hexDigit(str[i]);
        if ( d==-1 )
            return -1;
        n = (n<<4) | d;
    }
    return n;
}

// decode LEN decimal digits, return decoded number, -1 if invalid
int decodeDecimal( const lChar16 * str, int len ) {