Cbz.java

   1 package be.nikiroo.fanfix.supported;
   2
   3 import java.io.File;
   4 import java.io.FileInputStream;
   5 import java.io.IOException;
   6 import java.io.InputStream;
   7 import java.net.URL;
   8 import java.util.ArrayList;
   9 import java.util.Collections;
  10 import java.util.HashMap;
  11 import java.util.List;
  12 import java.util.Map;
  13 import java.util.zip.ZipEntry;
  14 import java.util.zip.ZipInputStream;
  15
  16 import be.nikiroo.fanfix.Instance;
  17 import be.nikiroo.fanfix.data.Chapter;
  18 import be.nikiroo.fanfix.data.MetaData;
  19 import be.nikiroo.fanfix.data.Paragraph;
  20 import be.nikiroo.fanfix.data.Story;
  21 import be.nikiroo.utils.IOUtils;
  22 import be.nikiroo.utils.Image;
  23 import be.nikiroo.utils.MarkableFileInputStream;
  24 import be.nikiroo.utils.Progress;
  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         public String getSourceName() {
  40                 return "cbz";
  41         }
  42
  43         @Override
  44         protected String getDataPrefix() {
  45                 return "";
  46         }
  47
  48         @Override
  49         protected boolean requireInfo() {
  50                 return false;
  51         }
  52
  53         @Override
  54         protected boolean isImagesDocumentByDefault() {
  55                 return true;
  56         }
  57
  58         @Override
  59         protected boolean getCover() {
  60                 return false;
  61         }
  62
  63         @Override
  64         public Story doProcess(Progress pg) throws IOException {
  65                 if (pg == null) {
  66                         pg = new Progress();
  67                 } else {
  68                         pg.setMinMax(0, 100);
  69                 }
  70
  71                 Progress pgMeta = new Progress();
  72                 pg.addProgress(pgMeta, 10);
  73                 Story story = processMeta(true, pgMeta);
  74                 MetaData meta = story.getMeta();
  75
  76                 pgMeta.done(); // 10%
  77
  78                 File tmpDir = Instance.getTempFiles().createTempDir("info-text");
  79                 String basename = null;
  80
  81                 Map<String, Image> images = new HashMap<String, Image>();
  82                 InputStream cbzIn = null;
  83                 ZipInputStream zipIn = null;
  84                 try {
  85                         cbzIn = new MarkableFileInputStream(new FileInputStream(
  86                                         getSourceFileOriginal()));
  87                         zipIn = new ZipInputStream(cbzIn);
  88                         for (ZipEntry entry = zipIn.getNextEntry(); entry != null; entry = zipIn
  89                                         .getNextEntry()) {
  90                                 if (!entry.isDirectory()
  91                                                 && entry.getName().startsWith(getDataPrefix())) {
  92                                         String entryLName = entry.getName().toLowerCase();
  93                                         boolean imageEntry = false;
  94                                         for (String ext : BasicSupportImages.getImageExt(false)) {
  95                                                 if (entryLName.endsWith(ext)) {
  96                                                         imageEntry = true;
  97                                                 }
  98                                         }
  99
 100                                         if (imageEntry) {
 101                                                 String uuid = meta.getUuid() + "_" + entry.getName();
 102                                                 try {
 103                                                         images.put(uuid, new Image(zipIn));
 104                                                 } catch (Exception e) {
 105                                                         Instance.getTraceHandler().error(e);
 106                                                 }
 107
 108                                                 if (pg.getProgress() < 85) {
 109                                                         pg.add(1);
 110                                                 }
 111                                         } else if (entryLName.endsWith(".info")) {
 112                                                 basename = entryLName.substring(0, entryLName.length()
 113                                                                 - ".info".length());
 114                                                 IOUtils.write(zipIn, new File(tmpDir, entryLName));
 115                                         } else if (entryLName.endsWith(".txt")) {
 116                                                 IOUtils.write(zipIn, new File(tmpDir, entryLName));
 117                                         }
 118                                 }
 119                         }
 120
 121                         pg.setProgress(85);
 122
 123                         // ZIP order is not correct for us
 124                         List<String> imagesList = new ArrayList<String>(images.keySet());
 125                         Collections.sort(imagesList);
 126
 127                         pg.setProgress(90);
 128
 129                         // include original story
 130                         Story origStory = getStoryFromTxt(tmpDir, basename);
 131                         if (origStory != null) {
 132                                 story.setChapters(origStory.getChapters());
 133                                 story.setMeta(origStory.getMeta());
 134                         } else {
 135                                 story.setChapters(new ArrayList<Chapter>());
 136                         }
 137
 138                         if (!imagesList.isEmpty()) {
 139                                 Chapter chap = new Chapter(story.getChapters().size() + 1, null);
 140                                 story.getChapters().add(chap);
 141
 142                                 for (String uuid : imagesList) {
 143                                         try {
 144                                                 chap.getParagraphs().add(
 145                                                                 new Paragraph(images.get(uuid)));
 146                                         } catch (Exception e) {
 147                                                 Instance.getTraceHandler().error(e);
 148                                         }
 149                                 }
 150                         }
 151
 152                         if (meta.getCover() == null && !images.isEmpty()) {
 153                                 meta.setCover(images.get(imagesList.get(0)));
 154                                 meta.setFakeCover(true);
 155                         }
 156
 157                 } finally {
 158                         IOUtils.deltree(tmpDir);
 159                         if (zipIn != null) {
 160                                 zipIn.close();
 161                         }
 162                         if (cbzIn != null) {
 163                                 cbzIn.close();
 164                         }
 165                 }
 166
 167                 pg.setProgress(100);
 168                 return story;
 169         }
 170
 171         private Story getStoryFromTxt(File tmpDir, String basename) {
 172                 Story origStory = null;
 173
 174                 File txt = new File(tmpDir, basename + ".txt");
 175                 if (!txt.exists()) {
 176                         basename = null;
 177                 }
 178                 if (basename != null) {
 179                         try {
 180                                 BasicSupport support = BasicSupport.getSupport(txt.toURI()
 181                                                 .toURL());
 182                                 origStory = support.process(null);
 183                         } catch (Exception e) {
 184                                 basename = null;
 185                         }
 186                 }
 187
 188                 return origStory;
 189
 190         }
 191 }