226 lines
8.9 KiB
Java
226 lines
8.9 KiB
Java
package me.ag2s.umdlib.umd;
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import androidx.annotation.NonNull;
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import java.io.IOException;
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import java.io.InputStream;
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import me.ag2s.umdlib.domain.UmdBook;
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import me.ag2s.umdlib.domain.UmdCover;
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import me.ag2s.umdlib.domain.UmdHeader;
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import me.ag2s.umdlib.tool.StreamReader;
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import me.ag2s.umdlib.tool.UmdUtils;
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/**
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* UMD格式的电子书解析
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* 格式规范参考：
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* http://blog.sina.com.cn/s/blog_7c8dc2d501018o5d.html
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* http://blog.sina.com.cn/s/blog_7c8dc2d501018o5l.html
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*
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*/
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public class UmdReader {
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UmdBook book;
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InputStream inputStream;
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int _AdditionalCheckNumber;
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int _TotalContentLen;
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boolean end = false;
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public synchronized UmdBook read(InputStream inputStream) throws Exception {
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book = new UmdBook();
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this.inputStream=inputStream;
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StreamReader reader = new StreamReader(inputStream);
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UmdHeader umdHeader = new UmdHeader();
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book.setHeader(umdHeader);
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if (reader.readIntLe() != 0xde9a9b89) {
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throw new IOException("Wrong header");
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}
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short num1 = -1;
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byte ch = reader.readByte();
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while (ch == 35) {
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//int num2=reader.readByte();
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short segType = reader.readShortLe();
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byte segFlag = reader.readByte();
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short len = (short) (reader.readUint8() - 5);
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System.out.println("块标识:" + segType);
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//short length1 = reader.readByte();
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readSection(segType, segFlag, len, reader, umdHeader);
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if ((int) segType == 241 || (int) segType == 10) {
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segType = num1;
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}
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for (ch = reader.readByte(); ch == 36; ch = reader.readByte()) {
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//int num3 = reader.readByte();
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System.out.println(ch);
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int additionalCheckNumber = reader.readIntLe();
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int length2 = (reader.readIntLe() - 9);
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readAdditionalSection(segType, additionalCheckNumber, length2, reader);
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}
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num1 = segType;
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}
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System.out.println(book.getHeader().toString());
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return book;
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}
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private void readAdditionalSection(short segType, int additionalCheckNumber, int length, StreamReader reader) throws Exception {
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switch (segType) {
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case 14:
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//this._TotalImageList.Add((object) Image.FromStream((Stream) new MemoryStream(reader.ReadBytes((int) length))));
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break;
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case 15:
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//this._TotalImageList.Add((object) Image.FromStream((Stream) new MemoryStream(reader.ReadBytes((int) length))));
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break;
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case 129:
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reader.readBytes(length);
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break;
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case 130:
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//byte[] covers = reader.readBytes(length);
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book.setCover(new UmdCover(reader.readBytes(length)));
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//this._Book.Cover = BitmapImage.FromStream((Stream) new MemoryStream(reader.ReadBytes((int) length)));
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break;
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case 131:
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System.out.println(length / 4);
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book.setNum(length / 4);
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for (int i = 0; i < length / 4; ++i) {
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book.getChapters().addContentLength(reader.readIntLe());
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}
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break;
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case 132:
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//System.out.println(length/4);
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System.out.println(_AdditionalCheckNumber);
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System.out.println(additionalCheckNumber);
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if (this._AdditionalCheckNumber != additionalCheckNumber) {
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System.out.println(length);
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book.getChapters().contents.write(UmdUtils.decompress(reader.readBytes(length)));
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book.getChapters().contents.flush();
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break;
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} else {
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for (int i = 0; i < book.getNum(); i++) {
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short len = reader.readUint8();
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byte[] title = reader.readBytes(len);
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//System.out.println(UmdUtils.unicodeBytesToString(title));
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book.getChapters().addTitle(title);
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}
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}
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break;
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default:
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/*Console.WriteLine("未知内容");
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Console.WriteLine("Seg Type = " + (object) segType);
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Console.WriteLine("Seg Len = " + (object) length);
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Console.WriteLine("content = " + (object) reader.ReadBytes((int) length));*/
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break;
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}
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}
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public void readSection(short segType, byte segFlag, short length, StreamReader reader, UmdHeader header) throws IOException {
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switch (segType) {
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case 1://umd文件头 DCTS_CMD_ID_VERSION
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header.setUmdType(reader.readByte());
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reader.readBytes(2);//Random 2
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System.out.println("UMD文件类型:" + header.getUmdType());
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break;
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case 2://文件标题 DCTS_CMD_ID_TITLE
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header.setTitle(UmdUtils.unicodeBytesToString(reader.readBytes(length)));
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System.out.println("文件标题:" + header.getTitle());
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break;
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case 3://作者
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header.setAuthor(UmdUtils.unicodeBytesToString(reader.readBytes(length)));
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System.out.println("作者:" + header.getAuthor());
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break;
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case 4://年
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header.setYear(UmdUtils.unicodeBytesToString(reader.readBytes(length)));
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System.out.println("年:" + header.getYear());
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break;
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case 5://月
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header.setMonth(UmdUtils.unicodeBytesToString(reader.readBytes(length)));
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System.out.println("月:" + header.getMonth());
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break;
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case 6://日
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header.setDay(UmdUtils.unicodeBytesToString(reader.readBytes(length)));
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System.out.println("日:" + header.getDay());
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break;
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case 7://小说类型
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header.setBookType(UmdUtils.unicodeBytesToString(reader.readBytes(length)));
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System.out.println("小说类型:" + header.getBookType());
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break;
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case 8://出版商
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header.setBookMan(UmdUtils.unicodeBytesToString(reader.readBytes(length)));
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System.out.println("出版商:" + header.getBookMan());
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break;
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case 9:// 零售商
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header.setShopKeeper(UmdUtils.unicodeBytesToString(reader.readBytes(length)));
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System.out.println("零售商:" + header.getShopKeeper());
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break;
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case 10://CONTENT ID
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System.out.println("CONTENT ID:" + reader.readHex(length));
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break;
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case 11:
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//内容长度 DCTS_CMD_ID_FILE_LENGTH
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_TotalContentLen = reader.readIntLe();
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book.getChapters().setTotalContentLen(_TotalContentLen);
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System.out.println("内容长度:" + _TotalContentLen);
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break;
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case 12://UMD文件结束
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end = true;
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int num2 = reader.readIntLe();
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System.out.println("整个文件长度" + num2);
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break;
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case 13:
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break;
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case 14:
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int num3 = (int) reader.readByte();
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break;
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case 15:
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reader.readBytes(length);
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break;
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case 129://正文
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case 131://章节偏移
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_AdditionalCheckNumber = reader.readIntLe();
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System.out.println("章节偏移:" + _AdditionalCheckNumber);
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break;
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case 132://章节标题，正文
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_AdditionalCheckNumber = reader.readIntLe();
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System.out.println("章节标题，正文:" + _AdditionalCheckNumber);
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break;
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case 130://封面（jpg）
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int num4 = (int) reader.readByte();
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_AdditionalCheckNumber = reader.readIntLe();
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break;
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case 135://页面偏移（Page Offset）
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reader.readUint8();//fontSize 一字节 字体大小
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reader.readUint8();//screenWidth 屏幕宽度
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reader.readBytes(4);//BlockRandom 指向一个页面偏移数据块
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break;
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case 240://CDS KEY
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break;
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case 241://许可证(LICENCE KEY)
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//System.out.println("整个文件长度" + length);
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System.out.println("许可证(LICENCE KEY):" + reader.readHex(16));
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break;
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default:
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if (length > 0) {
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byte[] numArray = reader.readBytes(length);
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}
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}
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}
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@Override
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@NonNull
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public String toString() {
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return "UmdReader{" +
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"book=" + book +
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'}';
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}
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}
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