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