diff --git a/java/.gitignore b/java/.gitignore new file mode 100644 index 0000000..e7058b2 --- /dev/null +++ b/java/.gitignore @@ -0,0 +1,26 @@ +# Built application files +/build +/classes + +# Local configuration file (sdk path, etc) +local.properties +gradle.properties + +# Gradle generated files +.gradle/ + +# Signing files +.signing/ + +# User-specific configurations +/.idea +*.iml + +# OS-specific files +.DS_Store +.DS_Store? +._* +.Spotlight-V100 +.Trashes +ehthumbs.db +Thumbs.db \ No newline at end of file diff --git a/java/advanced/.gitignore b/java/advanced/.gitignore new file mode 100644 index 0000000..42afabf --- /dev/null +++ b/java/advanced/.gitignore @@ -0,0 +1 @@ +/build \ No newline at end of file diff --git a/java/advanced/build.gradle b/java/advanced/build.gradle new file mode 100644 index 0000000..c0612d3 --- /dev/null +++ b/java/advanced/build.gradle @@ -0,0 +1,3 @@ +dependencies { + compile project(':core') +} \ No newline at end of file diff --git a/java/advanced/resources/qr_kanji_to_unicode.bin b/java/advanced/resources/qr_kanji_to_unicode.bin new file mode 100644 index 0000000..684f6a1 Binary files /dev/null and b/java/advanced/resources/qr_kanji_to_unicode.bin differ diff --git a/java/advanced/src/io/nayuki/qrcodegen/QrSegmentAdvanced.java b/java/advanced/src/io/nayuki/qrcodegen/QrSegmentAdvanced.java new file mode 100644 index 0000000..b2ca23b --- /dev/null +++ b/java/advanced/src/io/nayuki/qrcodegen/QrSegmentAdvanced.java @@ -0,0 +1,313 @@ +/* + * QR Code generator library - Optional advanced logic (Java) + * + * Copyright (c) Project Nayuki + * https://www.nayuki.io/page/qr-code-generator-library + * + * (MIT License) + * Permission is hereby granted, free of charge, to any person obtaining a copy of + * this software and associated documentation files (the "Software"), to deal in + * the Software without restriction, including without limitation the rights to + * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of + * the Software, and to permit persons to whom the Software is furnished to do so, + * subject to the following conditions: + * - The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * - The Software is provided "as is", without warranty of any kind, express or + * implied, including but not limited to the warranties of merchantability, + * fitness for a particular purpose and noninfringement. In no event shall the + * authors or copyright holders be liable for any claim, damages or other + * liability, whether in an action of contract, tort or otherwise, arising from, + * out of or in connection with the Software or the use or other dealings in the + * Software. + */ + +package io.nayuki.qrcodegen; + +import io.nayuki.qrcodegen.QrSegment.Mode; + +import java.io.ByteArrayOutputStream; +import java.io.IOException; +import java.io.InputStream; +import java.nio.charset.StandardCharsets; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.List; + + +public final class QrSegmentAdvanced { + + /*---- Optimal list of segments encoder ----*/ + + /** + * Returns a new mutable list of zero or more segments to represent the specified Unicode text string. + * The resulting list optimally minimizes the total encoded bit length, subjected to the constraints given + * by the specified {error correction level, minimum version number, maximum version number}, plus the additional + * constraint that the segment modes {NUMERIC, ALPHANUMERIC, BYTE} can be used but KANJI cannot be used. + *

This function can be viewed as a significantly more sophisticated and slower replacement + * for {@link QrSegment#makeSegments(String)}, but requiring more input parameters in a way + * that overlaps with {@link QrCode#encodeSegments(List, QrCode.Ecc, int, int, int, boolean)}.

+ * + * @param text the text to be encoded, which can be any Unicode string + * @param ecl the error correction level to use + * @param minVersion the minimum allowed version of the QR symbol (at least 1) + * @param maxVersion the maximum allowed version of the QR symbol (at most 40) + * @return a list of segments containing the text, minimizing the bit length with respect to the constraints + * @throws NullPointerException if the data or error correction level is {@code null} + * @throws IllegalArgumentException if 1 ≤ minVersion ≤ maxVersion ≤ 40 is violated, + * or if the data is too long to fit in a QR Code at maxVersion at the ECL + */ + public static List makeSegmentsOptimally(String text, QrCode.Ecc ecl, int minVersion, int maxVersion) { + // Check arguments + Objects.requireNonNull(text); + Objects.requireNonNull(ecl); + if (!(1 <= minVersion && minVersion <= maxVersion && maxVersion <= 40)) + throw new IllegalArgumentException("Invalid value"); + + // Iterate through version numbers, and make tentative segments + List segs = null; + for (int version = minVersion; version <= maxVersion; version++) { + if (version == minVersion || version == 10 || version == 27) + segs = makeSegmentsOptimally(text, version); + + // Check if the segments fit + int dataCapacityBits = QrCode.getNumDataCodewords(version, ecl) * 8; + int dataUsedBits = QrSegment.getTotalBits(segs, version); + if (dataUsedBits != -1 && dataUsedBits <= dataCapacityBits) + return segs; + } + throw new IllegalArgumentException("Data too long"); + } + + + // Returns a list of segments that is optimal for the given text at the given version number. + private static List makeSegmentsOptimally(String text, int version) { + byte[] data = text.getBytes(StandardCharsets.UTF_8); + int[][] bitCosts = computeBitCosts(data, version); + Mode[] charModes = computeCharacterModes(data, version, bitCosts); + return splitIntoSegments(data, charModes); + } + + + private static int[][] computeBitCosts(byte[] data, int version) { + // Segment header sizes, measured in 1/6 bits + int bytesCost = (4 + Mode.BYTE.numCharCountBits(version)) * 6; + int alphnumCost = (4 + Mode.ALPHANUMERIC.numCharCountBits(version)) * 6; + int numberCost = (4 + Mode.NUMERIC.numCharCountBits(version)) * 6; + + // result[mode][len] is the number of 1/6 bits to encode the first len characters of the text, ending in the mode + int[][] result = new int[3][data.length + 1]; + Arrays.fill(result[1], Integer.MAX_VALUE / 2); + Arrays.fill(result[2], Integer.MAX_VALUE / 2); + result[0][0] = bytesCost; + result[1][0] = alphnumCost; + result[2][0] = numberCost; + + // Calculate the cost table using dynamic programming + for (int i = 0; i < data.length; i++) { + // Encode a character + int j = i + 1; + char c = (char) data[i]; + result[0][j] = result[0][i] + 48; // 8 bits per byte + if (isAlphanumeric(c)) + result[1][j] = result[1][i] + 33; // 5.5 bits per alphanumeric char + if (isNumeric(c)) + result[2][j] = result[2][i] + 20; // 3.33 bits per digit + + // Switch modes, rounding up fractional bits + result[0][j] = Math.min((Math.min(result[1][j], result[2][j]) + 5) / 6 * 6 + bytesCost, result[0][j]); + result[1][j] = Math.min((Math.min(result[2][j], result[0][j]) + 5) / 6 * 6 + alphnumCost, result[1][j]); + result[2][j] = Math.min((Math.min(result[0][j], result[1][j]) + 5) / 6 * 6 + numberCost, result[2][j]); + } + return result; + } + + + private static Mode[] computeCharacterModes(byte[] data, int version, int[][] bitCosts) { + // Segment header sizes, measured in 1/6 bits + int bytesCost = (4 + Mode.BYTE.numCharCountBits(version)) * 6; + int alphnumCost = (4 + Mode.ALPHANUMERIC.numCharCountBits(version)) * 6; + int numberCost = (4 + Mode.NUMERIC.numCharCountBits(version)) * 6; + + // Infer the mode used for last character by taking the minimum + Mode curMode; + int end = bitCosts[0].length - 1; + if (bitCosts[0][end] <= Math.min(bitCosts[1][end], bitCosts[2][end])) + curMode = Mode.BYTE; + else if (bitCosts[1][end] <= bitCosts[2][end]) + curMode = Mode.ALPHANUMERIC; + else + curMode = Mode.NUMERIC; + + // Work backwards to calculate optimal encoding mode for each character + Mode[] result = new Mode[data.length]; + if (data.length == 0) + return result; + result[data.length - 1] = curMode; + for (int i = data.length - 2; i >= 0; i--) { + char c = (char) data[i]; + if (curMode == Mode.NUMERIC) { + if (isNumeric(c)) + curMode = Mode.NUMERIC; + else if (isAlphanumeric(c) && (bitCosts[1][i] + 33 + 5) / 6 * 6 + numberCost == bitCosts[2][i + 1]) + curMode = Mode.ALPHANUMERIC; + else + curMode = Mode.BYTE; + } else if (curMode == Mode.ALPHANUMERIC) { + if (isNumeric(c) && (bitCosts[2][i] + 20 + 5) / 6 * 6 + alphnumCost == bitCosts[1][i + 1]) + curMode = Mode.NUMERIC; + else if (isAlphanumeric(c)) + curMode = Mode.ALPHANUMERIC; + else + curMode = Mode.BYTE; + } else if (curMode == Mode.BYTE) { + if (isNumeric(c) && (bitCosts[2][i] + 20 + 5) / 6 * 6 + bytesCost == bitCosts[0][i + 1]) + curMode = Mode.NUMERIC; + else if (isAlphanumeric(c) && (bitCosts[1][i] + 33 + 5) / 6 * 6 + bytesCost == bitCosts[0][i + 1]) + curMode = Mode.ALPHANUMERIC; + else + curMode = Mode.BYTE; + } else + throw new AssertionError(); + result[i] = curMode; + } + return result; + } + + + private static List splitIntoSegments(byte[] data, Mode[] charModes) { + List result = new ArrayList<>(); + if (data.length == 0) + return result; + + // Accumulate run of modes + Mode curMode = charModes[0]; + int start = 0; + for (int i = 1; i < data.length; i++) { + if (charModes[i] != curMode) { + if (curMode == Mode.BYTE) + result.add(QrSegment.makeBytes(Arrays.copyOfRange(data, start, i))); + else { + String temp = new String(data, start, i - start, StandardCharsets.US_ASCII); + if (curMode == Mode.NUMERIC) + result.add(QrSegment.makeNumeric(temp)); + else if (curMode == Mode.ALPHANUMERIC) + result.add(QrSegment.makeAlphanumeric(temp)); + else + throw new AssertionError(); + } + curMode = charModes[i]; + start = i; + } + } + + // Final segment + if (curMode == Mode.BYTE) + result.add(QrSegment.makeBytes(Arrays.copyOfRange(data, start, data.length))); + else { + String temp = new String(data, start, data.length - start, StandardCharsets.US_ASCII); + if (curMode == Mode.NUMERIC) + result.add(QrSegment.makeNumeric(temp)); + else if (curMode == Mode.ALPHANUMERIC) + result.add(QrSegment.makeAlphanumeric(temp)); + else + throw new AssertionError(); + } + return result; + } + + + private static boolean isAlphanumeric(char c) { + return isNumeric(c) || 'A' <= c && c <= 'Z' || " $%*+./:-".indexOf(c) != -1; + } + + private static boolean isNumeric(char c) { + return '0' <= c && c <= '9'; + } + + + /*---- Kanji mode segment encoder ----*/ + + /** + * Returns a segment representing the specified string encoded in kanji mode. + *

Note that broadly speaking, the set of encodable characters are {kanji used in Japan, hiragana, katakana, + * Asian punctuation, full-width ASCII}.
+ * In particular, non-encodable characters are {normal ASCII, half-width katakana, more extensive Chinese hanzi}. + * + * @param text the text to be encoded, which must fall in the kanji mode subset of characters + * @return a segment containing the data + * @throws NullPointerException if the string is {@code null} + * @throws IllegalArgumentException if the string contains non-kanji-mode characters + * @see #isEncodableAsKanji(String) + */ + public static QrSegment makeKanjiSegment(String text) { + Objects.requireNonNull(text); + BitBuffer bb = new BitBuffer(); + for (int i = 0; i < text.length(); i++) { + int val = UNICODE_TO_QR_KANJI[text.charAt(i)]; + if (val == -1) + throw new IllegalArgumentException("String contains non-kanji-mode characters"); + bb.appendBits(val, 13); + } + return new QrSegment(Mode.KANJI, text.length(), bb.getBytes(), bb.bitLength()); + } + + + /** + * Tests whether the specified text string can be encoded as a segment in kanji mode. + *

Note that broadly speaking, the set of encodable characters are {kanji used in Japan, hiragana, katakana, + * Asian punctuation, full-width ASCII}.
+ * In particular, non-encodable characters are {normal ASCII, half-width katakana, more extensive Chinese hanzi}. + * + * @param text the string to test for encodability + * @return {@code true} if and only if the string can be encoded in kanji mode + * @throws NullPointerException if the string is {@code null} + * @see #makeKanjiSegment(String) + */ + public static boolean isEncodableAsKanji(String text) { + Objects.requireNonNull(text); + for (int i = 0; i < text.length(); i++) { + if (UNICODE_TO_QR_KANJI[text.charAt(i)] == -1) + return false; + } + return true; + } + + + private static short[] UNICODE_TO_QR_KANJI = new short[65536]; + + static { // Unpack the Shift JIS table into a more computation-friendly form + Arrays.fill(UNICODE_TO_QR_KANJI, (short) -1); + ByteArrayOutputStream os = new ByteArrayOutputStream(); + InputStream is = null; + try { + ClassLoader classloader = Thread.currentThread().getContextClassLoader(); + is = classloader.getResourceAsStream("qr_kanji_to_unicode.bin"); + byte[] buffer = new byte[8192]; + int read; + while ((read = is.read(buffer)) != -1) { + os.write(buffer, 0, read); + } + } catch (IOException e) { + throw new RuntimeException(e); + } finally { + try { + if (is != null) { + is.close(); + } + } catch (IOException e) { + // Ignore + } + } + final byte[] bytes = os.toByteArray(); + for (int i = 0; i < bytes.length; i += 2) { + int j = ((bytes[i] & 0xFF) << 8) | (bytes[i + 1] & 0xFF); + if (j == 0xFFFF) + continue; + if (UNICODE_TO_QR_KANJI[j] != -1) + throw new AssertionError(); + UNICODE_TO_QR_KANJI[j] = (short) (i / 2); + } + } + +} diff --git a/java/android/.gitignore b/java/android/.gitignore new file mode 100644 index 0000000..42afabf --- /dev/null +++ b/java/android/.gitignore @@ -0,0 +1 @@ +/build \ No newline at end of file diff --git a/java/android/build.gradle b/java/android/build.gradle new file mode 100644 index 0000000..535a8da --- /dev/null +++ b/java/android/build.gradle @@ -0,0 +1,10 @@ +configurations { providedCompile } + +sourceSets.main.compileClasspath += configurations.providedCompile +sourceSets.test.compileClasspath += configurations.providedCompile +sourceSets.test.runtimeClasspath += configurations.providedCompile + +dependencies { + compile project(':core') + providedCompile 'com.google.android:android:4.1.1.4' +} \ No newline at end of file diff --git a/java/android/src/io/nayuki/qrcodegen/QrCodeAndroid.java b/java/android/src/io/nayuki/qrcodegen/QrCodeAndroid.java new file mode 100644 index 0000000..ea56dd5 --- /dev/null +++ b/java/android/src/io/nayuki/qrcodegen/QrCodeAndroid.java @@ -0,0 +1,34 @@ +package io.nayuki.qrcodegen; + +import android.graphics.Bitmap; + + +public class QrCodeAndroid { + + /** + * Returns a new bitmap object representing this QR Code, with the specified module scale and number + * of border modules. For example, the arguments scale=10, border=4 means to pad the QR Code symbol + * with 4 white border modules on all four edges, then use 10*10 pixels to represent each module. + * The resulting image only contains the hex colors FF000000 and FFFFFFFF. + * + * @param scale the module scale factor, which must be positive + * @param border the number of border modules to add, which must be non-negative + * @return a bitmap representing this QR Code, with padding and scaling + * @throws IllegalArgumentException if the scale or border is out of range + */ + public static Bitmap toBitmap(QrCode qrCode, int scale, int border, Bitmap.Config config) { + if (scale <= 0 || border < 0) + throw new IllegalArgumentException("Value out of range"); + final int size = qrCode.size; + Bitmap result = Bitmap.createBitmap((size + border * 2) * scale, (size + border * 2) * scale, + config); + for (int y = 0; y < result.getHeight(); y++) { + for (int x = 0; x < result.getWidth(); x++) { + int val = qrCode.getModule(x / scale - border, y / scale - border); // 0 or 1 + result.setPixel(x, y, val == 1 ? 0xFF000000 : 0xFFFFFFFF); + } + } + return result; + } + +} diff --git a/java/build.gradle b/java/build.gradle new file mode 100644 index 0000000..268211f --- /dev/null +++ b/java/build.gradle @@ -0,0 +1,28 @@ +subprojects { + apply plugin: 'maven' + apply plugin: 'java' + + group 'com.github.nayuki.QR-Code-generator' + version '1.0' + + sourceCompatibility = JavaVersion.VERSION_1_7 + targetCompatibility = JavaVersion.VERSION_1_7 + + sourceSets { + main { + java { + srcDirs = ['src'] + } + resources { + srcDirs = ['resources'] + } + } + } + + repositories { + mavenLocal() + jcenter() + maven { url 'https://jitpack.io/' } + } + +} \ No newline at end of file diff --git a/java/core/.gitignore b/java/core/.gitignore new file mode 100644 index 0000000..42afabf --- /dev/null +++ b/java/core/.gitignore @@ -0,0 +1 @@ +/build \ No newline at end of file diff --git a/java/core/build.gradle b/java/core/build.gradle new file mode 100644 index 0000000..e69de29 diff --git a/java/io/nayuki/qrcodegen/BitBuffer.java b/java/core/src/io/nayuki/qrcodegen/BitBuffer.java similarity index 99% rename from java/io/nayuki/qrcodegen/BitBuffer.java rename to java/core/src/io/nayuki/qrcodegen/BitBuffer.java index 4c5d0ee..7350b03 100644 --- a/java/io/nayuki/qrcodegen/BitBuffer.java +++ b/java/core/src/io/nayuki/qrcodegen/BitBuffer.java @@ -25,7 +25,6 @@ package io.nayuki.qrcodegen; import java.util.Arrays; -import java.util.Objects; /** diff --git a/java/core/src/io/nayuki/qrcodegen/Objects.java b/java/core/src/io/nayuki/qrcodegen/Objects.java new file mode 100644 index 0000000..c02fadc --- /dev/null +++ b/java/core/src/io/nayuki/qrcodegen/Objects.java @@ -0,0 +1,14 @@ +package io.nayuki.qrcodegen; + +/** + * Created by mariotaku on 2017/4/5. + */ +public class Objects { + + static T requireNonNull(T obj) { + if (obj == null) + throw new NullPointerException(); + return obj; + } + +} diff --git a/java/io/nayuki/qrcodegen/QrCode.java b/java/core/src/io/nayuki/qrcodegen/QrCode.java similarity index 92% rename from java/io/nayuki/qrcodegen/QrCode.java rename to java/core/src/io/nayuki/qrcodegen/QrCode.java index 4642fe2..9c32718 100644 --- a/java/io/nayuki/qrcodegen/QrCode.java +++ b/java/core/src/io/nayuki/qrcodegen/QrCode.java @@ -24,11 +24,9 @@ package io.nayuki.qrcodegen; -import java.awt.image.BufferedImage; import java.util.Arrays; +import java.util.Collections; import java.util.List; -import java.util.Objects; - /** * Represents an immutable square grid of black and white cells for a QR Code symbol, and @@ -74,7 +72,7 @@ public final class QrCode { Objects.requireNonNull(data); Objects.requireNonNull(ecl); QrSegment seg = QrSegment.makeBytes(data); - return encodeSegments(Arrays.asList(seg), ecl); + return encodeSegments(Collections.singletonList(seg), ecl); } @@ -271,66 +269,7 @@ public final class QrCode { return 0; // Infinite white border } - - /** - * Returns a new image object representing this QR Code, with the specified module scale and number - * of border modules. For example, the arguments scale=10, border=4 means to pad the QR Code symbol - * with 4 white border modules on all four edges, then use 10*10 pixels to represent each module. - * The resulting image only contains the hex colors 000000 and FFFFFF. - * @param scale the module scale factor, which must be positive - * @param border the number of border modules to add, which must be non-negative - * @return an image representing this QR Code, with padding and scaling - * @throws IllegalArgumentException if the scale or border is out of range - */ - public BufferedImage toImage(int scale, int border) { - if (scale <= 0 || border < 0) - throw new IllegalArgumentException("Value out of range"); - BufferedImage result = new BufferedImage((size + border * 2) * scale, (size + border * 2) * scale, BufferedImage.TYPE_INT_RGB); - for (int y = 0; y < result.getHeight(); y++) { - for (int x = 0; x < result.getWidth(); x++) { - int val = getModule(x / scale - border, y / scale - border); // 0 or 1 - result.setRGB(x, y, val == 1 ? 0x000000 : 0xFFFFFF); - } - } - return result; - } - - - /** - * Based on the specified number of border modules to add as padding, this returns a - * string whose contents represents an SVG XML file that depicts this QR Code symbol. - * Note that Unix newlines (\n) are always used, regardless of the platform. - * @param border the number of border modules to add, which must be non-negative - * @return a string representing this QR Code as an SVG document - */ - public String toSvgString(int border) { - if (border < 0) - throw new IllegalArgumentException("Border must be non-negative"); - StringBuilder sb = new StringBuilder(); - sb.append("\n"); - sb.append("\n"); - sb.append(String.format("\n", size + border * 2)); - sb.append("\t\n"); - sb.append("\t\n"); - sb.append("\n"); - return sb.toString(); - } - - - + /*---- Private helper methods for constructor: Drawing function modules ----*/ private void drawFunctionPatterns() { @@ -863,5 +802,5 @@ public final class QrCode { } } - + } diff --git a/java/io/nayuki/qrcodegen/QrSegment.java b/java/core/src/io/nayuki/qrcodegen/QrSegment.java similarity index 99% rename from java/io/nayuki/qrcodegen/QrSegment.java rename to java/core/src/io/nayuki/qrcodegen/QrSegment.java index 59aa5df..9b0833a 100644 --- a/java/io/nayuki/qrcodegen/QrSegment.java +++ b/java/core/src/io/nayuki/qrcodegen/QrSegment.java @@ -28,7 +28,6 @@ import java.nio.charset.StandardCharsets; import java.util.ArrayList; import java.util.Arrays; import java.util.List; -import java.util.Objects; import java.util.regex.Pattern; @@ -138,7 +137,7 @@ public final class QrSegment { /** The length of this segment's unencoded data, measured in characters. Always zero or positive. */ public final int numChars; - /** The bits of this segment packed into a byte array in big endian. Accessed through {@link getByte(int)}. Not {@code null}. */ + /** The bits of this segment packed into a byte array in big endian. Accessed through {@link #getByte(int)}. Not {@code null}. */ private final byte[] data; /** The length of this segment's encoded data, measured in bits. Satisfies 0 ≤ {@code bitLength} ≤ {@code data.length} × 8. */ diff --git a/java/demo/.gitignore b/java/demo/.gitignore new file mode 100644 index 0000000..42afabf --- /dev/null +++ b/java/demo/.gitignore @@ -0,0 +1 @@ +/build \ No newline at end of file diff --git a/java/demo/build.gradle b/java/demo/build.gradle new file mode 100644 index 0000000..b710011 --- /dev/null +++ b/java/demo/build.gradle @@ -0,0 +1,6 @@ +dependencies { + compile project(':core') + compile project(':javase') + compile project(':svg') + compile project(':advanced') +} \ No newline at end of file diff --git a/java/demo/src/io/nayuki/qrcodegen/QrCodeGeneratorDemo.java b/java/demo/src/io/nayuki/qrcodegen/QrCodeGeneratorDemo.java new file mode 100644 index 0000000..d800e33 --- /dev/null +++ b/java/demo/src/io/nayuki/qrcodegen/QrCodeGeneratorDemo.java @@ -0,0 +1,143 @@ +/* + * QR Code generator demo (Java) + * + * Run this command-line program with no arguments. The program creates/overwrites a bunch of + * PNG and SVG files in the current working directory to demonstrate the creation of QR Codes. + * + * Copyright (c) Project Nayuki + * https://www.nayuki.io/page/qr-code-generator-library + * + * (MIT License) + * Permission is hereby granted, free of charge, to any person obtaining a copy of + * this software and associated documentation files (the "Software"), to deal in + * the Software without restriction, including without limitation the rights to + * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of + * the Software, and to permit persons to whom the Software is furnished to do so, + * subject to the following conditions: + * - The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * - The Software is provided "as is", without warranty of any kind, express or + * implied, including but not limited to the warranties of merchantability, + * fitness for a particular purpose and noninfringement. In no event shall the + * authors or copyright holders be liable for any claim, damages or other + * liability, whether in an action of contract, tort or otherwise, arising from, + * out of or in connection with the Software or the use or other dealings in the + * Software. + */ + +package io.nayuki.qrcodegen; + +import javax.imageio.ImageIO; +import java.awt.image.BufferedImage; +import java.io.*; +import java.nio.charset.StandardCharsets; +import java.util.Arrays; +import java.util.List; + + +public final class QrCodeGeneratorDemo { + + // The main application program. + public static void main(String[] args) throws IOException { + doBasicDemo(); + doVarietyDemo(); + doSegmentDemo(); + } + + + // Creates a single QR Code, then writes it to a PNG file and an SVG file. + private static void doBasicDemo() throws IOException { + String text = "Hello, world!"; // User-supplied Unicode text + QrCode.Ecc errCorLvl = QrCode.Ecc.LOW; // Error correction level + + QrCode qr = QrCode.encodeText(text, errCorLvl); // Make the QR Code symbol + + BufferedImage img = QrCodeJavaSE.toImage(qr, 10, 4); // Convert to bitmap image + File imgFile = new File("hello-world-QR.png"); // File path for output + ImageIO.write(img, "png", imgFile); // Write image to file + + String svg = QrCodeJavaSVG.toSvgString(qr, 4); // Convert to SVG XML code + try (Writer out = new OutputStreamWriter( + new FileOutputStream("hello-world-QR.svg"), + StandardCharsets.UTF_8)) { + out.write(svg); // Create/overwrite file and write SVG data + } + } + + + // Creates a variety of QR Codes that exercise different features of the library, and writes each one to file. + private static void doVarietyDemo() throws IOException { + QrCode qr; + + // Project Nayuki URL + qr = QrCode.encodeText("https://www.nayuki.io/", QrCode.Ecc.HIGH); + qr = new QrCode(qr, 3); // Change mask, forcing to mask #3 + writePng(QrCodeJavaSE.toImage(qr, 8, 6), "project-nayuki-QR.png"); + + // Numeric mode encoding (3.33 bits per digit) + qr = QrCode.encodeText("314159265358979323846264338327950288419716939937510", QrCode.Ecc.MEDIUM); + writePng(QrCodeJavaSE.toImage(qr, 13, 1), "pi-digits-QR.png"); + + // Alphanumeric mode encoding (5.5 bits per character) + qr = QrCode.encodeText("DOLLAR-AMOUNT:$39.87 PERCENTAGE:100.00% OPERATIONS:+-*/", QrCode.Ecc.HIGH); + writePng(QrCodeJavaSE.toImage(qr, 10, 2), "alphanumeric-QR.png"); + + // Unicode text as UTF-8, and different masks + qr = QrCode.encodeText("こんにちwa、世界！ αβγδ", QrCode.Ecc.QUARTILE); + writePng(QrCodeJavaSE.toImage(new QrCode(qr, 0), 10, 3), "unicode-mask0-QR.png"); + writePng(QrCodeJavaSE.toImage(new QrCode(qr, 1), 10, 3), "unicode-mask1-QR.png"); + writePng(QrCodeJavaSE.toImage(new QrCode(qr, 5), 10, 3), "unicode-mask5-QR.png"); + writePng(QrCodeJavaSE.toImage(new QrCode(qr, 7), 10, 3), "unicode-mask7-QR.png"); + + // Moderately large QR Code using longer text (from Lewis Carroll's Alice in Wonderland) + qr = QrCode.encodeText( + "Alice was beginning to get very tired of sitting by her sister on the bank, " + + "and of having nothing to do: once or twice she had peeped into the book her sister was reading, " + + "but it had no pictures or conversations in it, 'and what is the use of a book,' thought Alice " + + "'without pictures or conversations?' So she was considering in her own mind (as well as she could, " + + "for the hot day made her feel very sleepy and stupid), whether the pleasure of making a " + + "daisy-chain would be worth the trouble of getting up and picking the daisies, when suddenly " + + "a White Rabbit with pink eyes ran close by her.", QrCode.Ecc.HIGH); + writePng(QrCodeJavaSE.toImage(qr, 6, 10), "alice-wonderland-QR.png"); + } + + + // Creates QR Codes with manually specified segments for better compactness. + private static void doSegmentDemo() throws IOException { + QrCode qr; + List segs; + + // Illustration "silver" + String silver0 = "THE SQUARE ROOT OF 2 IS 1."; + String silver1 = "41421356237309504880168872420969807856967187537694807317667973799"; + qr = QrCode.encodeText(silver0 + silver1, QrCode.Ecc.LOW); + writePng(QrCodeJavaSE.toImage(qr, 10, 3), "sqrt2-monolithic-QR.png"); + + segs = Arrays.asList( + QrSegment.makeAlphanumeric(silver0), + QrSegment.makeNumeric(silver1)); + qr = QrCode.encodeSegments(segs, QrCode.Ecc.LOW); + writePng(QrCodeJavaSE.toImage(qr, 10, 3), "sqrt2-segmented-QR.png"); + + // Illustration "golden" + String golden0 = "Golden ratio φ = 1."; + String golden1 = "6180339887498948482045868343656381177203091798057628621354486227052604628189024497072072041893911374"; + String golden2 = "......"; + qr = QrCode.encodeText(golden0 + golden1 + golden2, QrCode.Ecc.LOW); + writePng(QrCodeJavaSE.toImage(qr, 8, 5), "phi-monolithic-QR.png"); + + segs = Arrays.asList( + QrSegment.makeBytes(golden0.getBytes(StandardCharsets.UTF_8)), + QrSegment.makeNumeric(golden1), + QrSegment.makeAlphanumeric(golden2)); + qr = QrCode.encodeSegments(segs, QrCode.Ecc.LOW); + writePng(QrCodeJavaSE.toImage(qr, 8, 5), "phi-segmented-QR.png"); + } + + + // Helper function to reduce code duplication. + private static void writePng(BufferedImage img, String filepath) throws IOException { + ImageIO.write(img, "png", new File(filepath)); + } + +} diff --git a/java/gradle/wrapper/gradle-wrapper.jar b/java/gradle/wrapper/gradle-wrapper.jar new file mode 100644 index 0000000..cbc462c Binary files /dev/null and b/java/gradle/wrapper/gradle-wrapper.jar differ diff --git a/java/gradle/wrapper/gradle-wrapper.properties b/java/gradle/wrapper/gradle-wrapper.properties new file mode 100644 index 0000000..c5a2250 --- /dev/null +++ b/java/gradle/wrapper/gradle-wrapper.properties @@ -0,0 +1,6 @@ +#Wed Apr 05 10:32:27 CST 2017 +distributionBase=GRADLE_USER_HOME +distributionPath=wrapper/dists +zipStoreBase=GRADLE_USER_HOME +zipStorePath=wrapper/dists +distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-bin.zip diff --git a/java/gradlew b/java/gradlew new file mode 100755 index 0000000..4453cce --- /dev/null +++ b/java/gradlew @@ -0,0 +1,172 @@ +#!/usr/bin/env sh + +############################################################################## +## +## Gradle start up script for UN*X +## +############################################################################## + +# Attempt to set APP_HOME +# Resolve links: $0 may be a link +PRG="$0" +# Need this for relative symlinks. +while [ -h "$PRG" ] ; do + ls=`ls -ld "$PRG"` + link=`expr "$ls" : '.*-> \(.*\)$'` + if expr "$link" : '/.*' > /dev/null; then + PRG="$link" + else + PRG=`dirname "$PRG"`"/$link" + fi +done +SAVED="`pwd`" +cd "`dirname \"$PRG\"`/" >/dev/null +APP_HOME="`pwd -P`" +cd "$SAVED" >/dev/null + +APP_NAME="Gradle" +APP_BASE_NAME=`basename "$0"` + +# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +DEFAULT_JVM_OPTS="" + +# Use the maximum available, or set MAX_FD != -1 to use that value. +MAX_FD="maximum" + +warn ( ) { + echo "$*" +} + +die ( ) { + echo + echo "$*" + echo + exit 1 +} + +# OS specific support (must be 'true' or 'false'). +cygwin=false +msys=false +darwin=false +nonstop=false +case "`uname`" in + CYGWIN* ) + cygwin=true + ;; + Darwin* ) + darwin=true + ;; + MINGW* ) + msys=true + ;; + NONSTOP* ) + nonstop=true + ;; +esac + +CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar + +# Determine the Java command to use to start the JVM. +if [ -n "$JAVA_HOME" ] ; then + if [ -x "$JAVA_HOME/jre/sh/java" ] ; then + # IBM's JDK on AIX uses strange locations for the executables + JAVACMD="$JAVA_HOME/jre/sh/java" + else + JAVACMD="$JAVA_HOME/bin/java" + fi + if [ ! -x "$JAVACMD" ] ; then + die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." + fi +else + JAVACMD="java" + which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." +fi + +# Increase the maximum file descriptors if we can. +if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then + MAX_FD_LIMIT=`ulimit -H -n` + if [ $? -eq 0 ] ; then + if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then + MAX_FD="$MAX_FD_LIMIT" + fi + ulimit -n $MAX_FD + if [ $? -ne 0 ] ; then + warn "Could not set maximum file descriptor limit: $MAX_FD" + fi + else + warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT" + fi +fi + +# For Darwin, add options to specify how the application appears in the dock +if $darwin; then + GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\"" +fi + +# For Cygwin, switch paths to Windows format before running java +if $cygwin ; then + APP_HOME=`cygpath --path --mixed "$APP_HOME"` + CLASSPATH=`cygpath --path --mixed "$CLASSPATH"` + JAVACMD=`cygpath --unix "$JAVACMD"` + + # We build the pattern for arguments to be converted via cygpath + ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null` + SEP="" + for dir in $ROOTDIRSRAW ; do + ROOTDIRS="$ROOTDIRS$SEP$dir" + SEP="|" + done + OURCYGPATTERN="(^($ROOTDIRS))" + # Add a user-defined pattern to the cygpath arguments + if [ "$GRADLE_CYGPATTERN" != "" ] ; then + OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)" + fi + # Now convert the arguments - kludge to limit ourselves to /bin/sh + i=0 + for arg in "$@" ; do + CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -` + CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option + + if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition + eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"` + else + eval `echo args$i`="\"$arg\"" + fi + i=$((i+1)) + done + case $i in + (0) set -- ;; + (1) set -- "$args0" ;; + (2) set -- "$args0" "$args1" ;; + (3) set -- "$args0" "$args1" "$args2" ;; + (4) set -- "$args0" "$args1" "$args2" "$args3" ;; + (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;; + (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;; + (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;; + (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;; + (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;; + esac +fi + +# Escape application args +save ( ) { + for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done + echo " " +} +APP_ARGS=$(save "$@") + +# Collect all arguments for the java command, following the shell quoting and substitution rules +eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS" + +# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong +if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then + cd "$(dirname "$0")" +fi + +exec "$JAVACMD" "$@" diff --git a/java/gradlew.bat b/java/gradlew.bat new file mode 100644 index 0000000..f955316 --- /dev/null +++ b/java/gradlew.bat @@ -0,0 +1,84 @@ +@if "%DEBUG%" == "" @echo off +@rem ########################################################################## +@rem +@rem Gradle startup script for Windows +@rem +@rem ########################################################################## + +@rem Set local scope for the variables with windows NT shell +if "%OS%"=="Windows_NT" setlocal + +set DIRNAME=%~dp0 +if "%DIRNAME%" == "" set DIRNAME=. +set APP_BASE_NAME=%~n0 +set APP_HOME=%DIRNAME% + +@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +set DEFAULT_JVM_OPTS= + +@rem Find java.exe +if defined JAVA_HOME goto findJavaFromJavaHome + +set JAVA_EXE=java.exe +%JAVA_EXE% -version >NUL 2>&1 +if "%ERRORLEVEL%" == "0" goto init + +echo. +echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. +echo. +echo Please set the JAVA_HOME variable in your environment to match the +echo location of your Java installation. + +goto fail + +:findJavaFromJavaHome +set JAVA_HOME=%JAVA_HOME:"=% +set JAVA_EXE=%JAVA_HOME%/bin/java.exe + +if exist "%JAVA_EXE%" goto init + +echo. +echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% +echo. +echo Please set the JAVA_HOME variable in your environment to match the +echo location of your Java installation. + +goto fail + +:init +@rem Get command-line arguments, handling Windows variants + +if not "%OS%" == "Windows_NT" goto win9xME_args + +:win9xME_args +@rem Slurp the command line arguments. +set CMD_LINE_ARGS= +set _SKIP=2 + +:win9xME_args_slurp +if "x%~1" == "x" goto execute + +set CMD_LINE_ARGS=%* + +:execute +@rem Setup the command line + +set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar + +@rem Execute Gradle +"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS% + +:end +@rem End local scope for the variables with windows NT shell +if "%ERRORLEVEL%"=="0" goto mainEnd + +:fail +rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of +rem the _cmd.exe /c_ return code! +if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 +exit /b 1 + +:mainEnd +if "%OS%"=="Windows_NT" endlocal + +:omega diff --git a/java/io/nayuki/qrcodegen/QrCodeGeneratorDemo.java b/java/io/nayuki/qrcodegen/QrCodeGeneratorDemo.java deleted file mode 100644 index 509a126..0000000 --- a/java/io/nayuki/qrcodegen/QrCodeGeneratorDemo.java +++ /dev/null @@ -1,147 +0,0 @@ -/* - * QR Code generator demo (Java) - * - * Run this command-line program with no arguments. The program creates/overwrites a bunch of - * PNG and SVG files in the current working directory to demonstrate the creation of QR Codes. - * - * Copyright (c) Project Nayuki - * https://www.nayuki.io/page/qr-code-generator-library - * - * (MIT License) - * Permission is hereby granted, free of charge, to any person obtaining a copy of - * this software and associated documentation files (the "Software"), to deal in - * the Software without restriction, including without limitation the rights to - * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of - * the Software, and to permit persons to whom the Software is furnished to do so, - * subject to the following conditions: - * - The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - The Software is provided "as is", without warranty of any kind, express or - * implied, including but not limited to the warranties of merchantability, - * fitness for a particular purpose and noninfringement. In no event shall the - * authors or copyright holders be liable for any claim, damages or other - * liability, whether in an action of contract, tort or otherwise, arising from, - * out of or in connection with the Software or the use or other dealings in the - * Software. - */ - -package io.nayuki.qrcodegen; - -import java.awt.image.BufferedImage; -import java.io.File; -import java.io.FileOutputStream; -import java.io.IOException; -import java.io.OutputStreamWriter; -import java.io.Writer; -import java.nio.charset.StandardCharsets; -import java.util.Arrays; -import java.util.List; -import javax.imageio.ImageIO; - - -public final class QrCodeGeneratorDemo { - - // The main application program. - public static void main(String[] args) throws IOException { - doBasicDemo(); - doVarietyDemo(); - doSegmentDemo(); - } - - - // Creates a single QR Code, then writes it to a PNG file and an SVG file. - private static void doBasicDemo() throws IOException { - String text = "Hello, world!"; // User-supplied Unicode text - QrCode.Ecc errCorLvl = QrCode.Ecc.LOW; // Error correction level - - QrCode qr = QrCode.encodeText(text, errCorLvl); // Make the QR Code symbol - - BufferedImage img = qr.toImage(10, 4); // Convert to bitmap image - File imgFile = new File("hello-world-QR.png"); // File path for output - ImageIO.write(img, "png", imgFile); // Write image to file - - String svg = qr.toSvgString(4); // Convert to SVG XML code - try (Writer out = new OutputStreamWriter( - new FileOutputStream("hello-world-QR.svg"), - StandardCharsets.UTF_8)) { - out.write(svg); // Create/overwrite file and write SVG data - } - } - - - // Creates a variety of QR Codes that exercise different features of the library, and writes each one to file. - private static void doVarietyDemo() throws IOException { - QrCode qr; - - // Project Nayuki URL - qr = QrCode.encodeText("https://www.nayuki.io/", QrCode.Ecc.HIGH); - qr = new QrCode(qr, 3); // Change mask, forcing to mask #3 - writePng(qr.toImage(8, 6), "project-nayuki-QR.png"); - - // Numeric mode encoding (3.33 bits per digit) - qr = QrCode.encodeText("314159265358979323846264338327950288419716939937510", QrCode.Ecc.MEDIUM); - writePng(qr.toImage(13, 1), "pi-digits-QR.png"); - - // Alphanumeric mode encoding (5.5 bits per character) - qr = QrCode.encodeText("DOLLAR-AMOUNT:$39.87 PERCENTAGE:100.00% OPERATIONS:+-*/", QrCode.Ecc.HIGH); - writePng(qr.toImage(10, 2), "alphanumeric-QR.png"); - - // Unicode text as UTF-8, and different masks - qr = QrCode.encodeText("こんにちwa、世界！ αβγδ", QrCode.Ecc.QUARTILE); - writePng(new QrCode(qr, 0).toImage(10, 3), "unicode-mask0-QR.png"); - writePng(new QrCode(qr, 1).toImage(10, 3), "unicode-mask1-QR.png"); - writePng(new QrCode(qr, 5).toImage(10, 3), "unicode-mask5-QR.png"); - writePng(new QrCode(qr, 7).toImage(10, 3), "unicode-mask7-QR.png"); - - // Moderately large QR Code using longer text (from Lewis Carroll's Alice in Wonderland) - qr = QrCode.encodeText( - "Alice was beginning to get very tired of sitting by her sister on the bank, " - + "and of having nothing to do: once or twice she had peeped into the book her sister was reading, " - + "but it had no pictures or conversations in it, 'and what is the use of a book,' thought Alice " - + "'without pictures or conversations?' So she was considering in her own mind (as well as she could, " - + "for the hot day made her feel very sleepy and stupid), whether the pleasure of making a " - + "daisy-chain would be worth the trouble of getting up and picking the daisies, when suddenly " - + "a White Rabbit with pink eyes ran close by her.", QrCode.Ecc.HIGH); - writePng(qr.toImage(6, 10), "alice-wonderland-QR.png"); - } - - - // Creates QR Codes with manually specified segments for better compactness. - private static void doSegmentDemo() throws IOException { - QrCode qr; - List segs; - - // Illustration "silver" - String silver0 = "THE SQUARE ROOT OF 2 IS 1."; - String silver1 = "41421356237309504880168872420969807856967187537694807317667973799"; - qr = QrCode.encodeText(silver0 + silver1, QrCode.Ecc.LOW); - writePng(qr.toImage(10, 3), "sqrt2-monolithic-QR.png"); - - segs = Arrays.asList( - QrSegment.makeAlphanumeric(silver0), - QrSegment.makeNumeric(silver1)); - qr = QrCode.encodeSegments(segs, QrCode.Ecc.LOW); - writePng(qr.toImage(10, 3), "sqrt2-segmented-QR.png"); - - // Illustration "golden" - String golden0 = "Golden ratio φ = 1."; - String golden1 = "6180339887498948482045868343656381177203091798057628621354486227052604628189024497072072041893911374"; - String golden2 = "......"; - qr = QrCode.encodeText(golden0 + golden1 + golden2, QrCode.Ecc.LOW); - writePng(qr.toImage(8, 5), "phi-monolithic-QR.png"); - - segs = Arrays.asList( - QrSegment.makeBytes(golden0.getBytes(StandardCharsets.UTF_8)), - QrSegment.makeNumeric(golden1), - QrSegment.makeAlphanumeric(golden2)); - qr = QrCode.encodeSegments(segs, QrCode.Ecc.LOW); - writePng(qr.toImage(8, 5), "phi-segmented-QR.png"); - } - - - // Helper function to reduce code duplication. - private static void writePng(BufferedImage img, String filepath) throws IOException { - ImageIO.write(img, "png", new File(filepath)); - } - -} diff --git a/java/io/nayuki/qrcodegen/QrSegmentAdvanced.java b/java/io/nayuki/qrcodegen/QrSegmentAdvanced.java deleted file mode 100644 index 8a65084..0000000 --- a/java/io/nayuki/qrcodegen/QrSegmentAdvanced.java +++ /dev/null @@ -1,403 +0,0 @@ -/* - * QR Code generator library - Optional advanced logic (Java) - * - * Copyright (c) Project Nayuki - * https://www.nayuki.io/page/qr-code-generator-library - * - * (MIT License) - * Permission is hereby granted, free of charge, to any person obtaining a copy of - * this software and associated documentation files (the "Software"), to deal in - * the Software without restriction, including without limitation the rights to - * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of - * the Software, and to permit persons to whom the Software is furnished to do so, - * subject to the following conditions: - * - The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - The Software is provided "as is", without warranty of any kind, express or - * implied, including but not limited to the warranties of merchantability, - * fitness for a particular purpose and noninfringement. In no event shall the - * authors or copyright holders be liable for any claim, damages or other - * liability, whether in an action of contract, tort or otherwise, arising from, - * out of or in connection with the Software or the use or other dealings in the - * Software. - */ - -package io.nayuki.qrcodegen; - -import static io.nayuki.qrcodegen.QrSegment.Mode.ALPHANUMERIC; -import static io.nayuki.qrcodegen.QrSegment.Mode.BYTE; -import static io.nayuki.qrcodegen.QrSegment.Mode.NUMERIC; -import java.nio.charset.StandardCharsets; -import java.util.ArrayList; -import java.util.Arrays; -import java.util.Base64; -import java.util.List; -import java.util.Objects; - - -public final class QrSegmentAdvanced { - - /*---- Optimal list of segments encoder ----*/ - - /** - * Returns a new mutable list of zero or more segments to represent the specified Unicode text string. - * The resulting list optimally minimizes the total encoded bit length, subjected to the constraints given - * by the specified {error correction level, minimum version number, maximum version number}, plus the additional - * constraint that the segment modes {NUMERIC, ALPHANUMERIC, BYTE} can be used but KANJI cannot be used. - *

This function can be viewed as a significantly more sophisticated and slower replacement - * for {@link QrSegment#makeSegments(String)}, but requiring more input parameters in a way - * that overlaps with {@link QrCode#encodeSegments(List,QrCode.Ecc,int,int,int,boolean)}.

- * @param text the text to be encoded, which can be any Unicode string - * @param ecl the error correction level to use - * @param minVersion the minimum allowed version of the QR symbol (at least 1) - * @param maxVersion the maximum allowed version of the QR symbol (at most 40) - * @return a list of segments containing the text, minimizing the bit length with respect to the constraints - * @throws NullPointerException if the data or error correction level is {@code null} - * @throws IllegalArgumentException if 1 ≤ minVersion ≤ maxVersion ≤ 40 is violated, - * or if the data is too long to fit in a QR Code at maxVersion at the ECL - */ - public static List makeSegmentsOptimally(String text, QrCode.Ecc ecl, int minVersion, int maxVersion) { - // Check arguments - Objects.requireNonNull(text); - Objects.requireNonNull(ecl); - if (!(1 <= minVersion && minVersion <= maxVersion && maxVersion <= 40)) - throw new IllegalArgumentException("Invalid value"); - - // Iterate through version numbers, and make tentative segments - List segs = null; - for (int version = minVersion; version <= maxVersion; version++) { - if (version == minVersion || version == 10 || version == 27) - segs = makeSegmentsOptimally(text, version); - - // Check if the segments fit - int dataCapacityBits = QrCode.getNumDataCodewords(version, ecl) * 8; - int dataUsedBits = QrSegment.getTotalBits(segs, version); - if (dataUsedBits != -1 && dataUsedBits <= dataCapacityBits) - return segs; - } - throw new IllegalArgumentException("Data too long"); - } - - - // Returns a list of segments that is optimal for the given text at the given version number. - private static List makeSegmentsOptimally(String text, int version) { - byte[] data = text.getBytes(StandardCharsets.UTF_8); - int[][] bitCosts = computeBitCosts(data, version); - QrSegment.Mode[] charModes = computeCharacterModes(data, version, bitCosts); - return splitIntoSegments(data, charModes); - } - - - private static int[][] computeBitCosts(byte[] data, int version) { - // Segment header sizes, measured in 1/6 bits - int bytesCost = (4 + BYTE .numCharCountBits(version)) * 6; - int alphnumCost = (4 + ALPHANUMERIC.numCharCountBits(version)) * 6; - int numberCost = (4 + NUMERIC .numCharCountBits(version)) * 6; - - // result[mode][len] is the number of 1/6 bits to encode the first len characters of the text, ending in the mode - int[][] result = new int[3][data.length + 1]; - Arrays.fill(result[1], Integer.MAX_VALUE / 2); - Arrays.fill(result[2], Integer.MAX_VALUE / 2); - result[0][0] = bytesCost; - result[1][0] = alphnumCost; - result[2][0] = numberCost; - - // Calculate the cost table using dynamic programming - for (int i = 0; i < data.length; i++) { - // Encode a character - int j = i + 1; - char c = (char)data[i]; - result[0][j] = result[0][i] + 48; // 8 bits per byte - if (isAlphanumeric(c)) - result[1][j] = result[1][i] + 33; // 5.5 bits per alphanumeric char - if (isNumeric(c)) - result[2][j] = result[2][i] + 20; // 3.33 bits per digit - - // Switch modes, rounding up fractional bits - result[0][j] = Math.min((Math.min(result[1][j], result[2][j]) + 5) / 6 * 6 + bytesCost , result[0][j]); - result[1][j] = Math.min((Math.min(result[2][j], result[0][j]) + 5) / 6 * 6 + alphnumCost, result[1][j]); - result[2][j] = Math.min((Math.min(result[0][j], result[1][j]) + 5) / 6 * 6 + numberCost , result[2][j]); - } - return result; - } - - - private static QrSegment.Mode[] computeCharacterModes(byte[] data, int version, int[][] bitCosts) { - // Segment header sizes, measured in 1/6 bits - int bytesCost = (4 + BYTE .numCharCountBits(version)) * 6; - int alphnumCost = (4 + ALPHANUMERIC.numCharCountBits(version)) * 6; - int numberCost = (4 + NUMERIC .numCharCountBits(version)) * 6; - - // Infer the mode used for last character by taking the minimum - QrSegment.Mode curMode; - int end = bitCosts[0].length - 1; - if (bitCosts[0][end] <= Math.min(bitCosts[1][end], bitCosts[2][end])) - curMode = BYTE; - else if (bitCosts[1][end] <= bitCosts[2][end]) - curMode = ALPHANUMERIC; - else - curMode = NUMERIC; - - // Work backwards to calculate optimal encoding mode for each character - QrSegment.Mode[] result = new QrSegment.Mode[data.length]; - if (data.length == 0) - return result; - result[data.length - 1] = curMode; - for (int i = data.length - 2; i >= 0; i--) { - char c = (char)data[i]; - if (curMode == NUMERIC) { - if (isNumeric(c)) - curMode = NUMERIC; - else if (isAlphanumeric(c) && (bitCosts[1][i] + 33 + 5) / 6 * 6 + numberCost == bitCosts[2][i + 1]) - curMode = ALPHANUMERIC; - else - curMode = BYTE; - } else if (curMode == ALPHANUMERIC) { - if (isNumeric(c) && (bitCosts[2][i] + 20 + 5) / 6 * 6 + alphnumCost == bitCosts[1][i + 1]) - curMode = NUMERIC; - else if (isAlphanumeric(c)) - curMode = ALPHANUMERIC; - else - curMode = BYTE; - } else if (curMode == BYTE) { - if (isNumeric(c) && (bitCosts[2][i] + 20 + 5) / 6 * 6 + bytesCost == bitCosts[0][i + 1]) - curMode = NUMERIC; - else if (isAlphanumeric(c) && (bitCosts[1][i] + 33 + 5) / 6 * 6 + bytesCost == bitCosts[0][i + 1]) - curMode = ALPHANUMERIC; - else - curMode = BYTE; - } else - throw new AssertionError(); - result[i] = curMode; - } - return result; - } - - - private static List splitIntoSegments(byte[] data, QrSegment.Mode[] charModes) { - List result = new ArrayList<>(); - if (data.length == 0) - return result; - - // Accumulate run of modes - QrSegment.Mode curMode = charModes[0]; - int start = 0; - for (int i = 1; i < data.length; i++) { - if (charModes[i] != curMode) { - if (curMode == BYTE) - result.add(QrSegment.makeBytes(Arrays.copyOfRange(data, start, i))); - else { - String temp = new String(data, start, i - start, StandardCharsets.US_ASCII); - if (curMode == NUMERIC) - result.add(QrSegment.makeNumeric(temp)); - else if (curMode == ALPHANUMERIC) - result.add(QrSegment.makeAlphanumeric(temp)); - else - throw new AssertionError(); - } - curMode = charModes[i]; - start = i; - } - } - - // Final segment - if (curMode == BYTE) - result.add(QrSegment.makeBytes(Arrays.copyOfRange(data, start, data.length))); - else { - String temp = new String(data, start, data.length - start, StandardCharsets.US_ASCII); - if (curMode == NUMERIC) - result.add(QrSegment.makeNumeric(temp)); - else if (curMode == ALPHANUMERIC) - result.add(QrSegment.makeAlphanumeric(temp)); - else - throw new AssertionError(); - } - return result; - } - - - private static boolean isAlphanumeric(char c) { - return isNumeric(c) || 'A' <= c && c <= 'Z' || " $%*+./:-".indexOf(c) != -1; - } - - private static boolean isNumeric(char c) { - return '0' <= c && c <= '9'; - } - - - /*---- Kanji mode segment encoder ----*/ - - /** - * Returns a segment representing the specified string encoded in kanji mode. - *

Note that broadly speaking, the set of encodable characters are {kanji used in Japan, hiragana, katakana, - * Asian punctuation, full-width ASCII}.
- * In particular, non-encodable characters are {normal ASCII, half-width katakana, more extensive Chinese hanzi}. - * @param text the text to be encoded, which must fall in the kanji mode subset of characters - * @return a segment containing the data - * @throws NullPointerException if the string is {@code null} - * @throws IllegalArgumentException if the string contains non-kanji-mode characters - * @see #isEncodableAsKanji(String) - */ - public static QrSegment makeKanjiSegment(String text) { - Objects.requireNonNull(text); - BitBuffer bb = new BitBuffer(); - for (int i = 0; i < text.length(); i++) { - int val = UNICODE_TO_QR_KANJI[text.charAt(i)]; - if (val == -1) - throw new IllegalArgumentException("String contains non-kanji-mode characters"); - bb.appendBits(val, 13); - } - return new QrSegment(QrSegment.Mode.KANJI, text.length(), bb.getBytes(), bb.bitLength()); - } - - - /** - * Tests whether the specified text string can be encoded as a segment in kanji mode. - *

Note that broadly speaking, the set of encodable characters are {kanji used in Japan, hiragana, katakana, - * Asian punctuation, full-width ASCII}.
- * In particular, non-encodable characters are {normal ASCII, half-width katakana, more extensive Chinese hanzi}. - * @param text the string to test for encodability - * @return {@code true} if and only if the string can be encoded in kanji mode - * @throws NullPointerException if the string is {@code null} - * @see #makeKanjiSegment(String) - */ - public static boolean isEncodableAsKanji(String text) { - Objects.requireNonNull(text); - for (int i = 0; i < text.length(); i++) { - if (UNICODE_TO_QR_KANJI[text.charAt(i)] == -1) - return false; - } - return true; - } - - - // Data derived from ftp://ftp.unicode.org/Public/MAPPINGS/OBSOLETE/EASTASIA/JIS/SHIFTJIS.TXT - private static final String PACKED_QR_KANJI_TO_UNICODE = - "MAAwATAC/wz/DjD7/xr/G/8f/wEwmzCcALT/QACo/z7/4/8/MP0w/jCdMJ4wA07dMAUwBjAHMPwgFSAQ/w8AXDAcIBb/XCAmICUgGCAZIBwgHf8I/wkwFDAV/zv/Pf9b/10wCDAJMAowCzAMMA0wDjAPMBAwEf8LIhIAsQDX//8A9/8dImD/HP8eImYiZyIeIjQmQiZA" + - "ALAgMiAzIQP/5f8EAKIAo/8F/wP/Bv8K/yAApyYGJgUlyyXPJc4lxyXGJaEloCWzJbIlvSW8IDswEiGSIZAhkSGTMBP/////////////////////////////IggiCyKGIocigiKDIioiKf////////////////////8iJyIoAKwh0iHUIgAiA///////////////////" + - 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"////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////" + - "////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////" + - "/////////////////////////////////////////////w=="; - - - private static short[] UNICODE_TO_QR_KANJI = new short[65536]; - - static { // Unpack the Shift JIS table into a more computation-friendly form - Arrays.fill(UNICODE_TO_QR_KANJI, (short)-1); - byte[] bytes = Base64.getDecoder().decode(PACKED_QR_KANJI_TO_UNICODE); - for (int i = 0; i < bytes.length; i += 2) { - int j = ((bytes[i] & 0xFF) << 8) | (bytes[i + 1] & 0xFF); - if (j == 0xFFFF) - continue; - if (UNICODE_TO_QR_KANJI[j] != -1) - throw new AssertionError(); - UNICODE_TO_QR_KANJI[j] = (short)(i / 2); - } - } - -} diff --git a/java/javase/.gitignore b/java/javase/.gitignore new file mode 100644 index 0000000..42afabf --- /dev/null +++ b/java/javase/.gitignore @@ -0,0 +1 @@ +/build \ No newline at end of file diff --git a/java/javase/build.gradle b/java/javase/build.gradle new file mode 100644 index 0000000..c0612d3 --- /dev/null +++ b/java/javase/build.gradle @@ -0,0 +1,3 @@ +dependencies { + compile project(':core') +} \ No newline at end of file diff --git a/java/javase/src/io/nayuki/qrcodegen/QrCodeJavaSE.java b/java/javase/src/io/nayuki/qrcodegen/QrCodeJavaSE.java new file mode 100644 index 0000000..d2691e9 --- /dev/null +++ b/java/javase/src/io/nayuki/qrcodegen/QrCodeJavaSE.java @@ -0,0 +1,32 @@ +package io.nayuki.qrcodegen; + +import java.awt.image.BufferedImage; + +public class QrCodeJavaSE { + + /** + * Returns a new image object representing this QR Code, with the specified module scale and number + * of border modules. For example, the arguments scale=10, border=4 means to pad the QR Code symbol + * with 4 white border modules on all four edges, then use 10*10 pixels to represent each module. + * The resulting image only contains the hex colors 000000 and FFFFFF. + * + * @param scale the module scale factor, which must be positive + * @param border the number of border modules to add, which must be non-negative + * @return an image representing this QR Code, with padding and scaling + * @throws IllegalArgumentException if the scale or border is out of range + */ + public static BufferedImage toImage(QrCode qrCode, int scale, int border) { + if (scale <= 0 || border < 0) + throw new IllegalArgumentException("Value out of range"); + final int size = qrCode.size; + BufferedImage result = new BufferedImage((size + border * 2) * scale, (size + border * 2) * scale, BufferedImage.TYPE_INT_RGB); + for (int y = 0; y < result.getHeight(); y++) { + for (int x = 0; x < result.getWidth(); x++) { + int val = qrCode.getModule(x / scale - border, y / scale - border); // 0 or 1 + result.setRGB(x, y, val == 1 ? 0x000000 : 0xFFFFFF); + } + } + return result; + } + +} diff --git a/java/settings.gradle b/java/settings.gradle new file mode 100644 index 0000000..daaf440 --- /dev/null +++ b/java/settings.gradle @@ -0,0 +1,7 @@ +include ':core' +include ':advanced' +include ':javase' +include ':android' +include ':svg' +include ':demo' + diff --git a/java/svg/.gitignore b/java/svg/.gitignore new file mode 100644 index 0000000..42afabf --- /dev/null +++ b/java/svg/.gitignore @@ -0,0 +1 @@ +/build \ No newline at end of file diff --git a/java/svg/build.gradle b/java/svg/build.gradle new file mode 100644 index 0000000..c0612d3 --- /dev/null +++ b/java/svg/build.gradle @@ -0,0 +1,3 @@ +dependencies { + compile project(':core') +} \ No newline at end of file diff --git a/java/svg/src/io/nayuki/qrcodegen/QrCodeJavaSVG.java b/java/svg/src/io/nayuki/qrcodegen/QrCodeJavaSVG.java new file mode 100644 index 0000000..7165651 --- /dev/null +++ b/java/svg/src/io/nayuki/qrcodegen/QrCodeJavaSVG.java @@ -0,0 +1,43 @@ +package io.nayuki.qrcodegen; + +import java.util.Locale; + +public class QrCodeJavaSVG { + + /** + * Based on the specified number of border modules to add as padding, this returns a + * string whose contents represents an SVG XML file that depicts this QR Code symbol. + * Note that Unix newlines (\n) are always used, regardless of the platform. + * + * @param border the number of border modules to add, which must be non-negative + * @return a string representing this QR Code as an SVG document + */ + public static String toSvgString(QrCode qr, int border) { + if (border < 0) + throw new IllegalArgumentException("Border must be non-negative"); + final int size = qr.size; + + StringBuilder sb = new StringBuilder(); + sb.append("\n"); + sb.append("\n"); + sb.append(String.format(Locale.US, "\n", size + border * 2)); + sb.append("\t\n"); + sb.append("\t\n"); + sb.append("\n"); + return sb.toString(); + } + +}