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/*
* Copyright 2017 Huy Cuong Nguyen
* Copyright 2013 ZXing authors
*/
// SPDX-License-Identifier: Apache-2.0
#include "aztec/AZEncoder.h"
#include "BitArray.h"
#include "BitArrayUtility.h"
#include "BitMatrixIO.h"
#include "gtest/gtest.h"
#include <algorithm>
#include <stdexcept>
namespace ZXing {
namespace Aztec {
void GenerateModeMessage(bool compact, int layers, int messageSizeInWords, BitArray& modeMessage);
void StuffBits(const BitArray& bits, int wordSize, BitArray& out);
}
}
using namespace ZXing;
namespace {
void TestEncode(const std::string& data, bool compact, int layers, const BitMatrix& expected) {
Aztec::EncodeResult aztec = Aztec::Encoder::Encode(data, 33, Aztec::Encoder::DEFAULT_AZTEC_LAYERS);
EXPECT_EQ(aztec.compact, compact) << "Unexpected symbol format (compact)";
EXPECT_EQ(aztec.layers, layers) << "Unexpected nr. of layers";
EXPECT_EQ(aztec.matrix, expected) << "encode() failed";
}
std::string StripSpaces(std::string str) {
#ifdef __cpp_lib_erase_if
std::erase_if(str, isspace);
#else
str.erase(std::remove_if(str.begin(), str.end(), isspace), str.end());
#endif
return str;
}
void TestModeMessage(bool compact, int layers, int words, const std::string& expected) {
BitArray bits;
Aztec::GenerateModeMessage(compact, layers, words, bits);
auto expectedBits = Utility::ParseBitArray(StripSpaces(expected));
EXPECT_EQ(bits, expectedBits) << "generateModeMessage() failed";
}
void TestStuffBits(int wordSize, const std::string& bits, const std::string& expected) {
BitArray in = Utility::ParseBitArray(StripSpaces(bits));
BitArray expectedBits = Utility::ParseBitArray(StripSpaces(expected));
BitArray stuffed;
Aztec::StuffBits(in, wordSize, stuffed);
EXPECT_EQ(stuffed, expectedBits) << "stuffBits() failed for input string: " + bits;
}
}
TEST(AZEncoderTest, GenerateModeMessage)
{
TestModeMessage(true, 2, 29, ".X .XXX.. ...X XX.. ..X .XX. .XX.X");
TestModeMessage(true, 4, 64, "XX XXXXXX .X.. ...X ..XX .X.. XX..");
TestModeMessage(false, 21, 660, "X.X.. .X.X..X..XX .XXX ..X.. .XXX. .X... ..XXX");
TestModeMessage(false, 32, 4096, "XXXXX XXXXXXXXXXX X.X. ..... XXX.X ..X.. X.XXX");
}
TEST(AZEncoderTest, StuffBits)
{
TestStuffBits(5, ".X.X. X.X.X .X.X.",
".X.X. X.X.X .X.X.");
TestStuffBits(5, ".X.X. ..... .X.X",
".X.X. ....X ..X.X");
TestStuffBits(3, "XX. ... ... ..X XXX .X. ..",
"XX. ..X ..X ..X ..X .XX XX. .X. ..X");
TestStuffBits(6, ".X.X.. ...... ..X.XX",
".X.X.. .....X. ..X.XX XXXX.");
TestStuffBits(6, ".X.X.. ...... ...... ..X.X.",
".X.X.. .....X .....X ....X. X.XXXX");
TestStuffBits(6, ".X.X.. XXXXXX ...... ..X.XX",
".X.X.. XXXXX. X..... ...X.X XXXXX.");
TestStuffBits(6,
"...... ..XXXX X..XX. .X.... .X.X.X .....X .X.... ...X.X .....X ....XX ..X... ....X. X..XXX X.XX.X",
".....X ...XXX XX..XX ..X... ..X.X. X..... X.X... ....X. X..... X....X X..X.. .....X X.X..X XXX.XX .XXXXX");
}
TEST(AZEncoderTest, Encode1)
{
TestEncode(
"This is an example Aztec symbol for Wikipedia.",
true, 3, ParseBitMatrix(
"X X X X X X X X \n"
"X X X X X X X X X X \n"
"X X X X X X X X X X X \n"
"X X X X X X X X X X X \n"
" X X X X X X X X X X X \n"
" X X X X X X X X X X X X X \n"
" X X X X X X X X X X X X \n"
"X X X X X X X X X X X X X X X X \n"
"X X X X X X X X X X X \n"
"X X X X X X X X X X X X X X X X \n"
"X X X X X X X X X X \n"
"X X X X X X X X X X \n"
" X X X X X X X X X X \n"
" X X X X X X X X X X X X X X X X X X \n"
" X X X X X X X X X X X X \n"
" X X X X X X X X X X X X X X X X \n"
" X X X X X X X X X X X \n"
" X X X X X X X X \n"
" X X X X X X X X X X X X X X X X \n"
" X X X X X X X X X X X X \n"
" X X X \n"
" X X X X X X X X X X \n"
" X X X X X X X X X X \n"
, 'X', true)
);
}
TEST(AZEncoderTest, Encode2)
{
TestEncode(
"Aztec Code is a public domain 2D matrix barcode symbology"
" of nominally square symbols built on a square grid with a "
"distinctive square bullseye pattern at their center.",
false, 6, ParseBitMatrix(
" X X X X X X X X X X X X X X X \n"
" X X X X X X X X X X X X X X X \n"
" X X X X X X X X X X X X X X X X X X X \n"
"X X X X X X X X X X X X X X \n"
"X X X X X X X X X X X X X X X X X X X X X \n"
" X X X X X X X X X X X X X X X X \n"
"X X X X X X X X X X X X X X X X X X X X \n"
" X X X X X X X X X X X X X X X X X X X X X X \n"
"X X X X X X X X X X X X X X X X X X X X X X X X X X X X \n"
" X X X X X X X X X X X X X X X X X X X X \n"
" X X X X X X X X X X X X X X X X X X X X \n"
" X X X X X X X X X X X X X X X X X X X X X X X \n"
"X X X X X X X X X X X X X X X X X X X X X \n"
" X X X X X X X X X X X X X X X \n"
" X X X X X X X X X X X X X X X X X X X X X X X X X X X \n"
" X X X X X X X X X X X \n"
" X X X X X X X X X X X X X X X X X X X X X X X X X \n"
" X X X X X X X X X X X X X X X \n"
"X X X X X X X X X X X X X X X X X X X X X X X X X X \n"
"X X X X X X X X X X X X X X X X X X X X \n"
"X X X X X X X X X X X X X X X X X X X X X \n"
" X X X X X X X X X X X X \n"
" X X X X X X X X X X X X X X X X X X X X X X X \n"
"X X X X X X X X X X X X X X X X X \n"
" X X X X X X X X X X X X X X X X X X X X X X X X X X X \n"
" X X X X X X X X X X X X X X X X \n"
" X X X X X X X X X X X X X X X X X X X X X X X X X X X \n"
" X X X X X X X X X X X X X X X X X \n"
"X X X X X X X X X X X X X X X X X \n"
"X X X X X X X X X X X X X X X X X X X X X X X X \n"
" X X X X X X X X X X X X X X X X X X X X \n"
"X X X X X X X X X X X X X X X \n"
" X X X X X X X X X X X X X X X X X X X X X X X X X \n"
" X X X X X X X X X X X X X X X X X \n"
"X X X X X X X X X X X X X X X X X X \n"
"X X X X X X X X X X X X X X X X X X X X X X X \n"
"X X X X X X X X X X X X X X X X X X X X X \n"
"X X X X X X X X X X X X X X X X \n"
"X X X X X X X X X X X X X X X X X X X X X \n"
" X X X X X X X X X X X X X X X X \n"
"X X X X X X X X X X X X X \n"
, 'X', true)
);
}
TEST(AZEncoderTest, UserSpecifiedLayers)
{
std::string alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
Aztec::EncodeResult aztec;
aztec = Aztec::Encoder::Encode(alphabet, 25, -2);
EXPECT_EQ(aztec.layers, 2);
EXPECT_TRUE(aztec.compact);
aztec = Aztec::Encoder::Encode(alphabet, 25, 32);
EXPECT_EQ(aztec.layers, 32);
EXPECT_FALSE(aztec.compact);
EXPECT_THROW({Aztec::Encoder::Encode(alphabet, 25, 33);}, std::invalid_argument );
EXPECT_THROW({Aztec::Encoder::Encode(alphabet, 25, -1);}, std::invalid_argument );
}
TEST(AZEncoderTest, BorderCompact4Case)
{
// Compact(4) con hold 608 bits of information, but at most 504 can be data. Rest must
// be error correction
std::string alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
// encodes as 26 * 5 * 4 = 520 bits of data
std::string alphabet4 = alphabet + alphabet + alphabet + alphabet;
EXPECT_THROW({Aztec::Encoder::Encode(alphabet4, 0, -4);}, std::invalid_argument );
// If we just try to encode it normally, it will go to a non-compact 4 layer
auto aztec = Aztec::Encoder::Encode(alphabet4, 0, Aztec::Encoder::DEFAULT_AZTEC_LAYERS);
EXPECT_FALSE(aztec.compact);
EXPECT_EQ(aztec.layers, 4);
// But shortening the string to 100 bytes (500 bits of data), compact works fine, even if we
// include more error checking.
aztec = Aztec::Encoder::Encode(alphabet4.substr(0, 100), 10, Aztec::Encoder::DEFAULT_AZTEC_LAYERS);
EXPECT_TRUE(aztec.compact);
EXPECT_EQ(aztec.layers, 4);
}
TEST(AZEncoderTest, Rune)
{
{
Aztec::EncodeResult aztec = Aztec::Encoder::Encode("\x19", 0, Aztec::Encoder::AZTEC_RUNE_LAYERS);
EXPECT_EQ(aztec.layers, 0);
EXPECT_EQ(aztec.matrix, ParseBitMatrix(
"X X X X X X X \n"
"X X X X X X X X X X X \n"
" X X X \n"
" X X X X X X X X \n"
" X X X X \n"
"X X X X X X X \n"
"X X X X X X \n"
"X X X X X X X X \n"
"X X X X \n"
" X X X X X X X X X X \n"
" X X \n"
));
}
{
Aztec::EncodeResult aztec = Aztec::Encoder::Encode("\xFF", 0, Aztec::Encoder::AZTEC_RUNE_LAYERS);
EXPECT_EQ(aztec.layers, 0);
EXPECT_EQ(aztec.matrix, ParseBitMatrix(
"X X X X X X \n"
"X X X X X X X X X X X \n"
" X X X \n"
"X X X X X X X X X \n"
"X X X X X X \n"
" X X X X X X \n"
" X X X X \n"
"X X X X X X X X X \n"
"X X X \n"
" X X X X X X X X X X \n"
" X X X X X \n"
));
}
{
Aztec::EncodeResult aztec = Aztec::Encoder::Encode("\x44", 0, Aztec::Encoder::AZTEC_RUNE_LAYERS);
std::cout << ToString(aztec.matrix, 'X', ' ', true);
}
}
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