Module: Xorcist

Defined in:
lib/xorcist.rb,
lib/xorcist/version.rb,
lib/xorcist/refinements.rb,
lib/xorcist/string_methods.rb,
ext/xorcist/xorcist.c

Defined Under Namespace

Modules: Refinements, StringMethods

Constant Summary collapse

VERSION = 
'1.1.0'

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.xor(x, y) ⇒ Object 



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# File 'lib/xorcist.rb', line 12

def xor(x, y)
  xor!(x.dup, y)
end

.xor!(x, y) ⇒ Object 



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# File 'ext/xorcist/xorcist.c', line 9

VALUE xor_in_place(VALUE self, VALUE x, VALUE y) {
    const char *src = 0;
    char *dest = 0;
    size_t len;
    size_t y_len;

    if (TYPE(x) != T_STRING) {
        rb_raise( rb_eTypeError, "first argument must be a String" );
        return Qnil;
    }

    if (TYPE(y) != T_STRING) {
        rb_raise( rb_eTypeError, "second argument must be a String" );
        return Qnil;
    }

    rb_str_modify(x);
    dest = RSTRING_PTR(x);
    len = RSTRING_LEN(x);

    src = RSTRING_PTR(y);
    y_len = RSTRING_LEN(y);

    if (y_len < len) {
        len = y_len;
    }

    for (; len--; ++dest, ++src) {
        *dest ^= *src;
    }

    return x;
}

Instance Method Details

#_xor! ⇒ Object 



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# File 'lib/xorcist.rb', line 19

alias_method :_xor!, :xor!