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

   1 package be.nikiroo.fanfix.supported;
   2
   3 import java.io.File;
   4 import java.io.FileInputStream;
   5 import java.io.FileNotFoundException;
   6 import java.io.IOException;
   7 import java.io.InputStream;
   8 import java.net.URL;
   9 import java.util.ArrayList;
  10 import java.util.List;
  11
  12 import be.nikiroo.fanfix.data.MetaData;
  13 import be.nikiroo.utils.MarkableFileInputStream;
  14
  15 // not complete: no "description" tag
  16 public class InfoReader {
  17         public static MetaData readMeta(File infoFile) throws IOException {
  18                 if (infoFile == null) {
  19                         throw new IOException("File is null");
  20                 }
  21
  22                 if (infoFile.exists()) {
  23                         InputStream in = new MarkableFileInputStream(new FileInputStream(
  24                                         infoFile));
  25                         try {
  26                                 return createMeta(infoFile.toURI().toURL(), in);
  27                         } finally {
  28                                 in.close();
  29                                 in = null;
  30                         }
  31                 } else {
  32                         throw new FileNotFoundException(
  33                                         "File given as argument does not exists: "
  34                                                         + infoFile.getAbsolutePath());
  35                 }
  36         }
  37
  38         private static MetaData createMeta(URL sourceInfoFile, InputStream in)
  39                         throws IOException {
  40                 MetaData meta = new MetaData();
  41
  42                 meta.setTitle(getInfoTag(in, "TITLE"));
  43                 meta.setAuthor(getInfoTag(in, "AUTHOR"));
  44                 meta.setDate(getInfoTag(in, "DATE"));
  45                 meta.setTags(getInfoTagList(in, "TAGS", ","));
  46                 meta.setSource(getInfoTag(in, "SOURCE"));
  47                 meta.setUrl(getInfoTag(in, "URL"));
  48                 meta.setPublisher(getInfoTag(in, "PUBLISHER"));
  49                 meta.setUuid(getInfoTag(in, "UUID"));
  50                 meta.setLuid(getInfoTag(in, "LUID"));
  51                 meta.setLang(getInfoTag(in, "LANG"));
  52                 meta.setSubject(getInfoTag(in, "SUBJECT"));
  53                 meta.setType(getInfoTag(in, "TYPE"));
  54                 meta.setImageDocument(getInfoTagBoolean(in, "IMAGES_DOCUMENT", false));
  55                 meta.setCover(BasicSupport.getImage(null, sourceInfoFile,
  56                                 getInfoTag(in, "COVER")));
  57                 try {
  58                         meta.setWords(Long.parseLong(getInfoTag(in, "WORDCOUNT")));
  59                 } catch (NumberFormatException e) {
  60                         meta.setWords(0);
  61                 }
  62                 meta.setCreationDate(getInfoTag(in, "CREATION_DATE"));
  63
  64                 if (meta.getCover() == null) {
  65                         meta.setCover(BasicSupport.getDefaultCover(meta.getSubject()));
  66                 }
  67
  68                 return meta;
  69         }
  70
  71         private static boolean getInfoTagBoolean(InputStream in, String key,
  72                         boolean def) throws IOException {
  73                 Boolean value = getInfoTagBoolean(in, key);
  74                 return value == null ? def : value;
  75         }
  76
  77         private static Boolean getInfoTagBoolean(InputStream in, String key)
  78                         throws IOException {
  79                 String value = getInfoTag(in, key);
  80                 if (value != null && !value.trim().isEmpty()) {
  81                         value = value.toLowerCase().trim();
  82                         return value.equals("1") || value.equals("on")
  83                                         || value.equals("true") || value.equals("yes");
  84                 }
  85
  86                 return null;
  87         }
  88
  89         private static List<String> getInfoTagList(InputStream in, String key,
  90                         String separator) throws IOException {
  91                 List<String> list = new ArrayList<String>();
  92                 String tt = getInfoTag(in, key);
  93                 if (tt != null) {
  94                         for (String tag : tt.split(separator)) {
  95                                 list.add(tag.trim());
  96                         }
  97                 }
  98
  99                 return list;
 100         }
 101
 102         /**
 103          * Return the value of the given tag in the <tt>.info</tt> file if present.
 104          *
 105          * @param key
 106          *            the tag key
 107          *
 108          * @return the value or NULL
 109          *
 110          * @throws IOException
 111          *             in case of I/O error
 112          */
 113         private static String getInfoTag(InputStream in, String key)
 114                         throws IOException {
 115                 key = "^" + key + "=";
 116
 117                 if (in != null) {
 118                         in.reset();
 119                         String value = BasicSupport.getLine(in, key, 0);
 120                         if (value != null && !value.isEmpty()) {
 121                                 value = value.trim().substring(key.length() - 1).trim();
 122                                 if (value.startsWith("'") && value.endsWith("'")
 123                                                 || value.startsWith("\"") && value.endsWith("\"")) {
 124                                         value = value.substring(1, value.length() - 1).trim();
 125                                 }
 126
 127                                 return value;
 128                         }
 129                 }
 130
 131                 return null;
 132         }
 133 }