add ReadQRCodewords

src/qrcode/cpp_port/data_mask.rs

@@ -0,0 +1,47 @@
+/*
+* Copyright 2016 Nu-book Inc.
+* Copyright 2016 ZXing authors
+*/
+// SPDX-License-Identifier: Apache-2.0
+
+use crate::common::BitMatrix;
+
+/**
+* <p>Encapsulates data masks for the data bits in a QR  and micro QR code, per ISO 18004:2006 6.8.</p>
+*
+* <p>Note that the diagram in section 6.8.1 is misleading since it indicates that i is column position
+* and j is row position. In fact, as the text says, i is row position and j is column position.</p>
+*/
+
+pub fn GetDataMaskBit(maskIndex: u32, x: u32, y: u32, isMicro: Option<bool>) -> bool {
+    let isMicro = isMicro.unwrap_or(false);
+    todo!()
+    // if (isMicro) {
+    // 	if (maskIndex < 0 || maskIndex >= 4)
+    // 		throw std::invalid_argument("QRCode maskIndex out of range");
+    // 	maskIndex = std::array{1, 4, 6, 7}[maskIndex]; // map from MQR to QR indices
+    // }
+
+    // switch (maskIndex) {
+    // case 0: return (y + x) % 2 == 0;
+    // case 1: return y % 2 == 0;
+    // case 2: return x % 3 == 0;
+    // case 3: return (y + x) % 3 == 0;
+    // case 4: return ((y / 2) + (x / 3)) % 2 == 0;
+    // case 5: return (y * x) % 6 == 0;
+    // case 6: return ((y * x) % 6) < 3;
+    // case 7: return (y + x + ((y * x) % 3)) % 2 == 0;
+    // }
+
+    // throw std::invalid_argument("QRCode maskIndex out of range");
+}
+
+pub fn GetMaskedBit(
+    bits: &BitMatrix,
+    x: u32,
+    y: u32,
+    maskIndex: u32,
+    isMicro: Option<bool>,
+) -> bool {
+    return GetDataMaskBit(maskIndex, x, y, isMicro) != bits.get(x, y);
+}