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