--- /dev/null
+/*
+ * Copyright (C) 2010 ZXing authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.zxing.common;
+
+import java.util.Hashtable;
+
+import com.google.zxing.DecodeHintType;
+
+/**
+ * Common string-related functions.
+ *
+ * @author Sean Owen
+ */
+public final class StringUtils {
+
+ private static final String PLATFORM_DEFAULT_ENCODING =
+ System.getProperty("file.encoding");
+ public static final String SHIFT_JIS = "SJIS";
+ private static final String EUC_JP = "EUC_JP";
+ private static final String UTF8 = "UTF8";
+ private static final String ISO88591 = "ISO8859_1";
+ private static final boolean ASSUME_SHIFT_JIS =
+ SHIFT_JIS.equalsIgnoreCase(PLATFORM_DEFAULT_ENCODING) ||
+ EUC_JP.equalsIgnoreCase(PLATFORM_DEFAULT_ENCODING);
+
+ private StringUtils() {}
+
+ /**
+ * @param bytes bytes encoding a string, whose encoding should be guessed
+ * @param hints decode hints if applicable
+ * @return name of guessed encoding; at the moment will only guess one of:
+ * {@link #SHIFT_JIS}, {@link #UTF8}, {@link #ISO88591}, or the platform
+ * default encoding if none of these can possibly be correct
+ */
+ public static String guessEncoding(byte[] bytes, Hashtable hints) {
+ if (hints != null) {
+ String characterSet = (String) hints.get(DecodeHintType.CHARACTER_SET);
+ if (characterSet != null) {
+ return characterSet;
+ }
+ }
+ // Does it start with the UTF-8 byte order mark? then guess it's UTF-8
+ if (bytes.length > 3 &&
+ bytes[0] == (byte) 0xEF &&
+ bytes[1] == (byte) 0xBB &&
+ bytes[2] == (byte) 0xBF) {
+ return UTF8;
+ }
+ // For now, merely tries to distinguish ISO-8859-1, UTF-8 and Shift_JIS,
+ // which should be by far the most common encodings. ISO-8859-1
+ // should not have bytes in the 0x80 - 0x9F range, while Shift_JIS
+ // uses this as a first byte of a two-byte character. If we see this
+ // followed by a valid second byte in Shift_JIS, assume it is Shift_JIS.
+ // If we see something else in that second byte, we'll make the risky guess
+ // that it's UTF-8.
+ int length = bytes.length;
+ boolean canBeISO88591 = true;
+ boolean canBeShiftJIS = true;
+ boolean canBeUTF8 = true;
+ int utf8BytesLeft = 0;
+ int maybeDoubleByteCount = 0;
+ int maybeSingleByteKatakanaCount = 0;
+ boolean sawLatin1Supplement = false;
+ boolean sawUTF8Start = false;
+ boolean lastWasPossibleDoubleByteStart = false;
+
+ for (int i = 0;
+ i < length && (canBeISO88591 || canBeShiftJIS || canBeUTF8);
+ i++) {
+
+ int value = bytes[i] & 0xFF;
+
+ // UTF-8 stuff
+ if (value >= 0x80 && value <= 0xBF) {
+ if (utf8BytesLeft > 0) {
+ utf8BytesLeft--;
+ }
+ } else {
+ if (utf8BytesLeft > 0) {
+ canBeUTF8 = false;
+ }
+ if (value >= 0xC0 && value <= 0xFD) {
+ sawUTF8Start = true;
+ int valueCopy = value;
+ while ((valueCopy & 0x40) != 0) {
+ utf8BytesLeft++;
+ valueCopy <<= 1;
+ }
+ }
+ }
+
+ // ISO-8859-1 stuff
+
+ if ((value == 0xC2 || value == 0xC3) && i < length - 1) {
+ // This is really a poor hack. The slightly more exotic characters people might want to put in
+ // a QR Code, by which I mean the Latin-1 supplement characters (e.g. u-umlaut) have encodings
+ // that start with 0xC2 followed by [0xA0,0xBF], or start with 0xC3 followed by [0x80,0xBF].
+ int nextValue = bytes[i + 1] & 0xFF;
+ if (nextValue <= 0xBF &&
+ ((value == 0xC2 && nextValue >= 0xA0) || (value == 0xC3 && nextValue >= 0x80))) {
+ sawLatin1Supplement = true;
+ }
+ }
+ if (value >= 0x7F && value <= 0x9F) {
+ canBeISO88591 = false;
+ }
+
+ // Shift_JIS stuff
+
+ if (value >= 0xA1 && value <= 0xDF) {
+ // count the number of characters that might be a Shift_JIS single-byte Katakana character
+ if (!lastWasPossibleDoubleByteStart) {
+ maybeSingleByteKatakanaCount++;
+ }
+ }
+ if (!lastWasPossibleDoubleByteStart &&
+ ((value >= 0xF0 && value <= 0xFF) || value == 0x80 || value == 0xA0)) {
+ canBeShiftJIS = false;
+ }
+ if (((value >= 0x81 && value <= 0x9F) || (value >= 0xE0 && value <= 0xEF))) {
+ // These start double-byte characters in Shift_JIS. Let's see if it's followed by a valid
+ // second byte.
+ if (lastWasPossibleDoubleByteStart) {
+ // If we just checked this and the last byte for being a valid double-byte
+ // char, don't check starting on this byte. If this and the last byte
+ // formed a valid pair, then this shouldn't be checked to see if it starts
+ // a double byte pair of course.
+ lastWasPossibleDoubleByteStart = false;
+ } else {
+ // ... otherwise do check to see if this plus the next byte form a valid
+ // double byte pair encoding a character.
+ lastWasPossibleDoubleByteStart = true;
+ if (i >= bytes.length - 1) {
+ canBeShiftJIS = false;
+ } else {
+ int nextValue = bytes[i + 1] & 0xFF;
+ if (nextValue < 0x40 || nextValue > 0xFC) {
+ canBeShiftJIS = false;
+ } else {
+ maybeDoubleByteCount++;
+ }
+ // There is some conflicting information out there about which bytes can follow which in
+ // double-byte Shift_JIS characters. The rule above seems to be the one that matches practice.
+ }
+ }
+ } else {
+ lastWasPossibleDoubleByteStart = false;
+ }
+ }
+ if (utf8BytesLeft > 0) {
+ canBeUTF8 = false;
+ }
+
+ // Easy -- if assuming Shift_JIS and no evidence it can't be, done
+ if (canBeShiftJIS && ASSUME_SHIFT_JIS) {
+ return SHIFT_JIS;
+ }
+ if (canBeUTF8 && sawUTF8Start) {
+ return UTF8;
+ }
+ // Distinguishing Shift_JIS and ISO-8859-1 can be a little tough. The crude heuristic is:
+ // - If we saw
+ // - at least 3 bytes that starts a double-byte value (bytes that are rare in ISO-8859-1), or
+ // - over 5% of bytes could be single-byte Katakana (also rare in ISO-8859-1),
+ // - and, saw no sequences that are invalid in Shift_JIS, then we conclude Shift_JIS
+ if (canBeShiftJIS && (maybeDoubleByteCount >= 3 || 20 * maybeSingleByteKatakanaCount > length)) {
+ return SHIFT_JIS;
+ }
+ // Otherwise, we default to ISO-8859-1 unless we know it can't be
+ if (!sawLatin1Supplement && canBeISO88591) {
+ return ISO88591;
+ }
+ // Otherwise, we take a wild guess with platform encoding
+ return PLATFORM_DEFAULT_ENCODING;
+ }
+
+}
package com.google.zxing.qrcode.decoder;
-import com.google.zxing.DecodeHintType;
import com.google.zxing.FormatException;
import com.google.zxing.common.BitSource;
import com.google.zxing.common.CharacterSetECI;
import com.google.zxing.common.DecoderResult;
+import com.google.zxing.common.StringUtils;
import java.io.UnsupportedEncodingException;
import java.util.Hashtable;
'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
' ', '$', '%', '*', '+', '-', '.', '/', ':'
};
- private static final String SHIFT_JIS = "SJIS";
- private static final String EUC_JP = "EUC_JP";
- private static final boolean ASSUME_SHIFT_JIS;
- private static final String UTF8 = "UTF8";
- private static final String ISO88591 = "ISO8859_1";
-
- static {
- String platformDefault = System.getProperty("file.encoding");
- ASSUME_SHIFT_JIS = SHIFT_JIS.equalsIgnoreCase(platformDefault) || EUC_JP.equalsIgnoreCase(platformDefault);
- }
private DecodedBitStreamParser() {
}
}
// Shift_JIS may not be supported in some environments:
try {
- result.append(new String(buffer, SHIFT_JIS));
+ result.append(new String(buffer, StringUtils.SHIFT_JIS));
} catch (UnsupportedEncodingException uee) {
throw FormatException.getFormatInstance();
}
// upon decoding. I have seen ISO-8859-1 used as well as
// Shift_JIS -- without anything like an ECI designator to
// give a hint.
- encoding = guessEncoding(readBytes, hints);
+ encoding = StringUtils.guessEncoding(readBytes, hints);
} else {
encoding = currentCharacterSetECI.getEncodingName();
}
result.append(ALPHANUMERIC_CHARS[digitBits]);
}
}
-
- private static String guessEncoding(byte[] bytes, Hashtable hints) {
- if (hints != null) {
- String characterSet = (String) hints.get(DecodeHintType.CHARACTER_SET);
- if (characterSet != null) {
- return characterSet;
- }
- }
- if (ASSUME_SHIFT_JIS) {
- return SHIFT_JIS;
- }
- // Does it start with the UTF-8 byte order mark? then guess it's UTF-8
- if (bytes.length > 3 && bytes[0] == (byte) 0xEF && bytes[1] == (byte) 0xBB && bytes[2] == (byte) 0xBF) {
- return UTF8;
- }
- // For now, merely tries to distinguish ISO-8859-1, UTF-8 and Shift_JIS,
- // which should be by far the most common encodings. ISO-8859-1
- // should not have bytes in the 0x80 - 0x9F range, while Shift_JIS
- // uses this as a first byte of a two-byte character. If we see this
- // followed by a valid second byte in Shift_JIS, assume it is Shift_JIS.
- // If we see something else in that second byte, we'll make the risky guess
- // that it's UTF-8.
- int length = bytes.length;
- boolean canBeISO88591 = true;
- boolean canBeShiftJIS = true;
- int maybeDoubleByteCount = 0;
- int maybeSingleByteKatakanaCount = 0;
- boolean sawLatin1Supplement = false;
- boolean lastWasPossibleDoubleByteStart = false;
- for (int i = 0; i < length && (canBeISO88591 || canBeShiftJIS); i++) {
- int value = bytes[i] & 0xFF;
- if ((value == 0xC2 || value == 0xC3) && i < length - 1) {
- // This is really a poor hack. The slightly more exotic characters people might want to put in
- // a QR Code, by which I mean the Latin-1 supplement characters (e.g. u-umlaut) have encodings
- // that start with 0xC2 followed by [0xA0,0xBF], or start with 0xC3 followed by [0x80,0xBF].
- int nextValue = bytes[i + 1] & 0xFF;
- if (nextValue <= 0xBF && ((value == 0xC2 && nextValue >= 0xA0) || (value == 0xC3 && nextValue >= 0x80))) {
- sawLatin1Supplement = true;
- }
- }
- if (value >= 0x7F && value <= 0x9F) {
- canBeISO88591 = false;
- }
- if (value >= 0xA1 && value <= 0xDF) {
- // count the number of characters that might be a Shift_JIS single-byte Katakana character
- if (!lastWasPossibleDoubleByteStart) {
- maybeSingleByteKatakanaCount++;
- }
- }
- if (!lastWasPossibleDoubleByteStart && ((value >= 0xF0 && value <= 0xFF) || value == 0x80 || value == 0xA0)) {
- canBeShiftJIS = false;
- }
- if (((value >= 0x81 && value <= 0x9F) || (value >= 0xE0 && value <= 0xEF))) {
- // These start double-byte characters in Shift_JIS. Let's see if it's followed by a valid
- // second byte.
- if (lastWasPossibleDoubleByteStart) {
- // If we just checked this and the last byte for being a valid double-byte
- // char, don't check starting on this byte. If this and the last byte
- // formed a valid pair, then this shouldn't be checked to see if it starts
- // a double byte pair of course.
- lastWasPossibleDoubleByteStart = false;
- } else {
- // ... otherwise do check to see if this plus the next byte form a valid
- // double byte pair encoding a character.
- lastWasPossibleDoubleByteStart = true;
- if (i >= bytes.length - 1) {
- canBeShiftJIS = false;
- } else {
- int nextValue = bytes[i + 1] & 0xFF;
- if (nextValue < 0x40 || nextValue > 0xFC) {
- canBeShiftJIS = false;
- } else {
- maybeDoubleByteCount++;
- }
- // There is some conflicting information out there about which bytes can follow which in
- // double-byte Shift_JIS characters. The rule above seems to be the one that matches practice.
- }
- }
- } else {
- lastWasPossibleDoubleByteStart = false;
- }
- }
- // Distinguishing Shift_JIS and ISO-8859-1 can be a little tough. The crude heuristic is:
- // - If we saw
- // - at least three byte that starts a double-byte value (bytes that are rare in ISO-8859-1), or
- // - over 5% of bytes that could be single-byte Katakana (also rare in ISO-8859-1),
- // - and, saw no sequences that are invalid in Shift_JIS, then we conclude Shift_JIS
- if (canBeShiftJIS && (maybeDoubleByteCount >= 3 || 20 * maybeSingleByteKatakanaCount > length)) {
- return SHIFT_JIS;
- }
- // Otherwise, we default to ISO-8859-1 unless we know it can't be
- if (!sawLatin1Supplement && canBeISO88591) {
- return ISO88591;
- }
- // Otherwise, we take a wild guess with UTF-8
- return UTF8;
- }
private static int parseECIValue(BitSource bits) {
int firstByte = bits.readBits(8);
--- /dev/null
+http://live.fdgm.jp/u/event/hype/hype_top.html \r
+\r
+MEBKM:TITLE:hypeモバイル;URL:http\://live.fdgm.jp/u/event/hype/hype_top.html;;
\ No newline at end of file
--- /dev/null
+MECARD:N:測試;;
\ No newline at end of file
--- /dev/null
+今度のバージョンでは文章の暗号化ができます。
\ No newline at end of file
public QRCodeBlackBox2TestCase() {
super("test/data/blackbox/qrcode-2", new MultiFormatReader(), BarcodeFormat.QR_CODE);
- addTest(21, 21, 0.0f);
- addTest(18, 18, 90.0f);
- addTest(20, 20, 180.0f);
- addTest(18, 18, 270.0f);
+ addTest(23, 23, 0.0f);
+ addTest(21, 21, 90.0f);
+ addTest(23, 23, 180.0f);
+ addTest(20, 21, 270.0f);
}
}
public void testSimpleSJIS() throws Exception {
BitSourceBuilder builder = new BitSourceBuilder();
builder.write(0x04, 4); // Byte mode
- builder.write(0x03, 8); // 3 bytes
+ builder.write(0x04, 8); // 4 bytes
builder.write(0xA1, 8);
builder.write(0xA2, 8);
builder.write(0xA3, 8);
+ builder.write(0xD0, 8);
String result = DecodedBitStreamParser.decode(builder.toByteArray(),
Version.getVersionForNumber(1), null, null).getText();
- assertEquals("\uff61\uff62\uff63", result);
+ assertEquals("\uff61\uff62\uff63\uff90", result);
}
public void testECI() throws Exception {
projects / zxing.git / commitdiff
