www.pudn.com > QRcode.rar > QRCodeDataBlockReader.java
/*
* 作成日： 2004/10/04
*
* TODO この生成されたファイルのテンプレートを変更するには次を参照。
* ウィンドウ ＞ 設定 ＞ Java ＞ コード・スタイル ＞ コード・テンプレート
*/
package jp.sourceforge.qrcode.codec.reader;
import jp.sourceforge.qrcode.codec.util.DebugCanvas;
/**
* @author Owner
*
* TODO この生成された型コメントのテンプレートを変更するには次を参照。
* ウィンドウ ＞ 設定 ＞ Java ＞ コード・スタイル ＞ コード・テンプレート
*/
public class QRCodeDataBlockReader {
int[] blocks;
int version;
int mode = -1;
int blockPointer;
int bitPointer;
int dataLength;
DebugCanvas canvas;
final int MODE_NUMBER = 1;
final int MODE_ROMAN_AND_NUMBER = 2;
final int MODE_8BIT_BYTE = 4;
final int MODE_KANJI = 8;
public QRCodeDataBlockReader(int[] blocks, int version) {
blockPointer = 0;
bitPointer = 7;
dataLength = 0;
this.blocks = blocks;
this.version = version;
canvas = DebugCanvas.getCanvas();
}
int getNextBits(int numBits) throws ArrayIndexOutOfBoundsException {
// System.out.println("numBits:" + String.valueOf(numBits));
// System.out.println("blockPointer:" + String.valueOf(blockPointer));
// System.out.println("bitPointer:" + String.valueOf(bitPointer));
if (numBits < bitPointer + 1) { // 1つのブロックで収まる
int mask = 0;
for (int i = 0; i < numBits; i++) {
mask += 1 << i;
}
mask <<= (bitPointer - numBits + 1);
int bits = (blocks[blockPointer] & mask) >> (bitPointer - numBits + 1);
bitPointer -= numBits;
return bits;
}
else if (numBits < bitPointer + 1 + 8) { //2つのブロックにまたがる
int mask1 = 0;
for (int i = 0; i < bitPointer + 1; i++) {
mask1 += 1 << i;
}
int bits = (blocks[blockPointer] & mask1) << (numBits - (bitPointer + 1));
blockPointer++;
bits += (blocks[blockPointer]) >> (8 - (numBits - (bitPointer + 1)));
bitPointer = bitPointer - numBits % 8;
if (bitPointer < 0) {
bitPointer = 8 + bitPointer;
}
return bits;
}
else if (numBits < bitPointer + 1 + 16) { //3つのブロックにまたがる
int mask1 = 0; //第1ブロックのマスク
int mask3 = 0; //第3ブロックのマスク
//bitPointer + 1 : 第1ブロックのビット数
//8 : 第2ブロックのビット数(常に8)
//numBits - (bitPointer + 1 + 8) : 第3ブロックのビット数
for (int i = 0; i < bitPointer + 1; i++) {
mask1 += 1 << i;
}
int bitsFirstBlock = (blocks[blockPointer] & mask1) << (numBits - (bitPointer + 1));
blockPointer++;
int bitsSecondBlock = blocks[blockPointer] << (numBits - (bitPointer + 1 + 8));
blockPointer++;
for (int i = 0; i < numBits - (bitPointer + 1 + 8); i++) {
mask3 += 1 << i;
}
mask3 <<= 8 - (numBits - (bitPointer + 1 + 8));
int bitsThirdBlock = (blocks[blockPointer] & mask3) >> (8 - (numBits - (bitPointer + 1 + 8)));
int bits = bitsFirstBlock + bitsSecondBlock + bitsThirdBlock;
bitPointer = bitPointer - (numBits - 8) % 8;
if (bitPointer < 0) {
bitPointer = 8 + bitPointer;
}
return bits;
}
else {
System.out.println("ERROR!");
return 0;
}
}
int getNextMode() throws ArrayIndexOutOfBoundsException {
return getNextBits(4);
}
int guessMode(int mode) {
//0001 0010 0011 0100
//0101 0110 0111 1000
if (mode == 3)
return MODE_ROMAN_AND_NUMBER;
// else if (mode == 5 || mode == 6)
// return MODE_8BIT_BYTE;
else // mode > 8
return MODE_KANJI;
}
int getDataLength(int mode) throws ArrayIndexOutOfBoundsException {
switch (mode) {
case MODE_NUMBER:
if (version <= 9)
return getNextBits(10);
else if (version >= 10 && version <= 26)
return getNextBits(12);
case MODE_ROMAN_AND_NUMBER:
if (version <= 9)
return getNextBits(9);
else if (version >= 10 && version <= 26)
return getNextBits(11);
case MODE_8BIT_BYTE:
if (version <= 9)
return getNextBits(8);
else if (version >= 10 && version <= 26)
return getNextBits(16);
case MODE_KANJI:
if (version <= 9)
return getNextBits(8);
else if (version >= 10 && version <= 26)
return getNextBits(10);
default:
return 0;
}
}
public String getDataString() throws ArrayIndexOutOfBoundsException {
canvas.println("Reading data blocks.");
String dataString = "";
do {
mode = getNextMode();
//System.out.println("mode: " + mode);
if (mode == 0)
break;
//if (mode != 1 && mode != 2 && mode != 4 && mode != 8)
// break;
//}
if (mode != MODE_NUMBER && mode != MODE_ROMAN_AND_NUMBER &&
mode != MODE_8BIT_BYTE && mode != MODE_KANJI) {
mode = guessMode(mode);
//System.out.println("guessed mode: " + mode);
}
dataLength = getDataLength(mode);
//System.out.println("length: " + dataLength);
switch (mode) {
case MODE_NUMBER: //数字モード
//canvas.println("Mode: Figure");
dataString += getFigureString(dataLength);
break;
case MODE_ROMAN_AND_NUMBER: //英数字モード
//canvas.println("Mode: Roman&Figure");
dataString += getRomanAndFigureString(dataLength);
break;
case MODE_8BIT_BYTE: //8ビットバイトモード
//canvas.println("Mode: 8bit Byte");
dataString += get8bitByteString(dataLength);
break;
case MODE_KANJI: //漢字モード
//canvas.println("Mode: Kanji");
dataString += getKanjiString(dataLength);
break;
}
//canvas.println("DataLength: " + dataLength);
//System.out.println(dataString);
} while (true);
System.out.println("");
return dataString;
}
String getFigureString(int dataLength) throws ArrayIndexOutOfBoundsException {
int length = dataLength;
int intData = 0;
String strData = "";
do {
if (length >= 3) {
intData = getNextBits(10);
if (intData < 100) strData += "0";
if (intData < 10) strData += "0";
length -= 3;
}
else if (length == 2) {
intData = getNextBits(7);
if (intData < 10) strData += "0";
length -= 2;
}
else if (length == 1) {
intData = getNextBits(4);
length -= 1;
}
strData += Integer.toString(intData);
} while (length > 0);
return strData;
}
String getRomanAndFigureString(int dataLength) throws ArrayIndexOutOfBoundsException {
int length = dataLength;
int intData = 0;
String strData = "";
final char[] tableRomanAndFigure = {
'0', '1', '2', '3', '4', '5',
'6', '7', '8', '9', 'A', 'B',
'C', 'D', 'E', 'F', 'G', 'H',
'I', 'J', 'K', 'L', 'M', 'N',
'O', 'P', 'Q', 'R', 'S', 'T',
'U', 'V', 'W', 'X', 'Y', 'Z',
' ', '$', '%', '*', '+', '-',
'.', '/', ':'
};
do {
if (length > 1) {
intData = getNextBits(11);
int firstLetter = intData / 45;
int secondLetter = intData % 45;
strData += String.valueOf(tableRomanAndFigure[firstLetter]);
strData += String.valueOf(tableRomanAndFigure[secondLetter]);
length -= 2;
}
else if (length == 1) {
intData = getNextBits(6);
strData += String.valueOf(tableRomanAndFigure[intData]);
length -= 1;
}
} while (length > 0);
return strData;
}
String get8bitByteString(int dataLength) throws ArrayIndexOutOfBoundsException {
int length = dataLength;
int intData = 0;
String strData = "";
final char[] table8bitByte = {
' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', '\n', ' ', ' ', ' ', ' ', ' ',
' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
' ', '!', '"', '#', '$', '%', '&', '\'', '(', ')', '*', '+', ',', '-', '.', '/',
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', ':', ';', '<', '=', '>', '?',
'@', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '[', '\\', ']', '^', '_',
'`', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '{', '|', '}', '~', ' ',
' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
' ', '｡', '｢', '｣', '､', '･', 'ｦ', 'ｧ', 'ｨ', 'ｩ', 'ｪ', 'ｫ', 'ｬ', 'ｭ', 'ｮ', 'ｯ',
'-', 'ｱ', 'ｲ', 'ｳ', 'ｴ', 'ｵ', 'ｶ', 'ｷ', 'ｸ', 'ｹ', 'ｺ', 'ｻ', 'ｼ', 'ｽ', 'ｾ', 'ｿ',
'ﾀ', 'ﾁ', 'ﾂ', 'ﾃ', 'ﾄ', 'ﾅ', 'ﾆ', 'ﾇ', 'ﾈ', 'ﾉ', 'ﾊ', 'ﾋ', 'ﾌ', 'ﾍ', 'ﾎ', 'ﾏ',
'ﾐ', 'ﾑ', 'ﾒ', 'ﾓ', 'ﾔ', 'ﾕ', 'ﾖ', 'ﾗ', 'ﾘ', 'ﾙ', 'ﾚ', 'ﾛ', 'ﾜ', 'ﾝ', 'ﾞ', 'ﾟ',
' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' '
};
do {
intData = getNextBits(8);
strData += String.valueOf(table8bitByte[intData]);
length--;
} while (length > 0);
return strData;
}
String getKanjiString(int dataLength) throws ArrayIndexOutOfBoundsException {
int length = dataLength;
int intData = 0;
String unicodeString = "";
do {
intData = getNextBits(13);
int lowerByte = intData % 0xC0;
int higherByte = intData / 0xC0;
int tempWord = (higherByte << 8) + lowerByte;
int shiftjisWord = 0;
if (tempWord + 0x8140 <= 0x9FFC) { //8140 〜 9FFC の間
shiftjisWord = tempWord + 0x8140;
}
else { // E040 〜 EBBF の間
shiftjisWord = tempWord + 0xC140;
}
byte[] tempByte = new byte[2];
tempByte[0] = (byte)(shiftjisWord >> 8);
tempByte[1] = (byte)(shiftjisWord & 0xFF);
unicodeString += new String(tempByte);
length--;
} while (length > 0);
return unicodeString;
}
}