src/be/nikiroo/fanfix/supported/Cbz.java

   1 package be.nikiroo.fanfix.supported;
   2
   3 import java.io.File;
   4 import java.io.IOException;
   5 import java.io.InputStream;
   6 import java.net.URL;
   7 import java.util.ArrayList;
   8 import java.util.Collections;
   9 import java.util.HashMap;
  10 import java.util.List;
  11 import java.util.Map;
  12 import java.util.zip.ZipEntry;
  13 import java.util.zip.ZipInputStream;
  14
  15 import be.nikiroo.fanfix.Instance;
  16 import be.nikiroo.fanfix.data.Chapter;
  17 import be.nikiroo.fanfix.data.MetaData;
  18 import be.nikiroo.fanfix.data.Paragraph;
  19 import be.nikiroo.fanfix.data.Paragraph.ParagraphType;
  20 import be.nikiroo.fanfix.data.Story;
  21 import be.nikiroo.utils.IOUtils;
  22 import be.nikiroo.utils.Image;
  23 import be.nikiroo.utils.Progress;
  24 import be.nikiroo.utils.streams.MarkableFileInputStream;
  25
  26 /**
  27  * Support class for CBZ files (works better with CBZ created with this program,
  28  * as they have some metadata available).
  29  *
  30  * @author niki
  31  */
  32 class Cbz extends Epub {
  33         @Override
  34         protected boolean supports(URL url) {
  35                 return url.toString().toLowerCase().endsWith(".cbz");
  36         }
  37
  38         @Override
  39         protected String getDataPrefix() {
  40                 return "";
  41         }
  42
  43         @Override
  44         protected boolean requireInfo() {
  45                 return false;
  46         }
  47
  48         @Override
  49         protected boolean isImagesDocumentByDefault() {
  50                 return true;
  51         }
  52
  53         @Override
  54         protected boolean getCover() {
  55                 return false;
  56         }
  57
  58         @Override
  59         public Story doProcess(Progress pg) throws IOException {
  60                 if (pg == null) {
  61                         pg = new Progress();
  62                 } else {
  63                         pg.setMinMax(0, 100);
  64                 }
  65
  66                 Progress pgMeta = new Progress();
  67                 pg.addProgress(pgMeta, 10);
  68                 Story story = processMeta(true, pgMeta);
  69                 MetaData meta = story.getMeta();
  70
  71                 pgMeta.done(); // 10%
  72
  73                 File tmpDir = Instance.getTempFiles().createTempDir("info-text");
  74                 String basename = null;
  75
  76                 Map<String, Image> images = new HashMap<String, Image>();
  77                 InputStream cbzIn = null;
  78                 ZipInputStream zipIn = null;
  79                 try {
  80                         cbzIn = new MarkableFileInputStream(getSourceFileOriginal());
  81                         zipIn = new ZipInputStream(cbzIn);
  82                         for (ZipEntry entry = zipIn.getNextEntry(); entry != null; entry = zipIn
  83                                         .getNextEntry()) {
  84                                 if (!entry.isDirectory()
  85                                                 && entry.getName().startsWith(getDataPrefix())) {
  86                                         String entryLName = entry.getName().toLowerCase();
  87                                         boolean imageEntry = false;
  88                                         for (String ext : bsImages.getImageExt(false)) {
  89                                                 if (entryLName.endsWith(ext)) {
  90                                                         imageEntry = true;
  91                                                 }
  92                                         }
  93
  94                                         if (imageEntry) {
  95                                                 String uuid = meta.getUuid() + "_" + entry.getName();
  96                                                 try {
  97                                                         images.put(uuid, new Image(zipIn));
  98                                                 } catch (Exception e) {
  99                                                         Instance.getTraceHandler().error(e);
 100                                                 }
 101
 102                                                 if (pg.getProgress() < 85) {
 103                                                         pg.add(1);
 104                                                 }
 105                                         } else if (entryLName.endsWith(".info")) {
 106                                                 basename = entryLName.substring(0, entryLName.length()
 107                                                                 - ".info".length());
 108                                                 IOUtils.write(zipIn, new File(tmpDir, entryLName));
 109                                         } else if (entryLName.endsWith(".txt")) {
 110                                                 IOUtils.write(zipIn, new File(tmpDir, entryLName));
 111                                         }
 112                                 }
 113                         }
 114
 115                         pg.setProgress(85);
 116
 117                         // ZIP order is not correct for us
 118                         List<String> imagesList = new ArrayList<String>(images.keySet());
 119                         Collections.sort(imagesList);
 120
 121                         pg.setProgress(90);
 122
 123                         // only the description is kept
 124                         Story origStory = getStoryFromTxt(tmpDir, basename);
 125                         if (origStory != null) {
 126                                 if (origStory.getMeta().getCover() == null) {
 127                                         origStory.getMeta().setCover(story.getMeta().getCover());
 128                                 }
 129                                 story.setMeta(origStory.getMeta());
 130                         }
 131                         story.setChapters(new ArrayList<Chapter>());
 132
 133                         // Check if we can find non-images chapters, for hybrid-cbz support
 134                         if (origStory != null) {
 135                                 for (Chapter chap : origStory) {
 136                                         Boolean isImages = null;
 137                                         for (Paragraph para : chap) {
 138                                                 ParagraphType t = para.getType();
 139                                                 if (isImages == null && !t.isText(true)) {
 140                                                         isImages = true;
 141                                                 }
 142                                                 if (t.isText(false)) {
 143                                                         String line = para.getContent();
 144                                                         // Images are saved in text mode as "[image-link]"
 145                                                         if (!(line.startsWith("[") && line.endsWith("]"))) {
 146                                                                 isImages = false;
 147                                                         }
 148                                                 }
 149                                         }
 150
 151                                         if (isImages != null && !isImages) {
 152                                                 story.getChapters().add(chap);
 153                                                 chap.setNumber(story.getChapters().size());
 154                                         }
 155                                 }
 156                         }
 157
 158                         if (!imagesList.isEmpty()) {
 159                                 Chapter chap = new Chapter(story.getChapters().size() + 1, null);
 160                                 story.getChapters().add(chap);
 161
 162                                 for (String uuid : imagesList) {
 163                                         try {
 164                                                 chap.getParagraphs().add(
 165                                                                 new Paragraph(images.get(uuid)));
 166                                         } catch (Exception e) {
 167                                                 Instance.getTraceHandler().error(e);
 168                                         }
 169                                 }
 170                         }
 171
 172                         if (meta.getCover() == null && !images.isEmpty()) {
 173                                 meta.setCover(images.get(imagesList.get(0)));
 174                                 meta.setFakeCover(true);
 175                         }
 176                 } finally {
 177                         IOUtils.deltree(tmpDir);
 178                         if (zipIn != null) {
 179                                 zipIn.close();
 180                         }
 181                         if (cbzIn != null) {
 182                                 cbzIn.close();
 183                         }
 184                 }
 185
 186                 pg.setProgress(100);
 187                 return story;
 188         }
 189
 190         private Story getStoryFromTxt(File tmpDir, String basename) {
 191                 Story origStory = null;
 192
 193                 File txt = new File(tmpDir, basename + ".txt");
 194                 if (!txt.exists()) {
 195                         basename = null;
 196                 }
 197                 if (basename != null) {
 198                         try {
 199                                 BasicSupport support = BasicSupport.getSupport(txt.toURI()
 200                                                 .toURL());
 201                                 origStory = support.process(null);
 202                         } catch (Exception e) {
 203                                 basename = null;
 204                         }
 205                 }
 206
 207                 return origStory;
 208
 209         }
 210 }