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.setPublisher(getInfoTag(in, "PUBLISHER"));
  46                 meta.setUuid(getInfoTag(in, "UUID"));
  47                 meta.setLuid(getInfoTag(in, "LUID"));
  48                 meta.setLang(getInfoTag(in, "LANG"));
  49                 meta.setSubject(getInfoTag(in, "SUBJECT"));
  50                 meta.setType(getInfoTag(in, "TYPE"));
  51                 meta.setImageDocument(getInfoTagBoolean(in, "IMAGES_DOCUMENT", false));
  52                 meta.setCover(BasicSupport.getImage(null, getInfoTag(in, "COVER")));
  53
  54                 if (meta.getCover() == null) {
  55                         meta.setCover(BasicSupport.getDefaultCover(meta.getSubject()));
  56                 }
  57
  58                 return meta;
  59         }
  60
  61         private static boolean getInfoTagBoolean(InputStream in, String key,
  62                         boolean def) throws IOException {
  63                 Boolean value = getInfoTagBoolean(in, key);
  64                 return value == null ? def : value;
  65         }
  66
  67         private static Boolean getInfoTagBoolean(InputStream in, String key)
  68                         throws IOException {
  69                 String value = getInfoTag(in, key);
  70                 if (value != null && !value.trim().isEmpty()) {
  71                         value = value.toLowerCase().trim();
  72                         return value.equals("1") || value.equals("on")
  73                                         || value.equals("true") || value.equals("yes");
  74                 }
  75
  76                 return null;
  77         }
  78
  79         private static List<String> getInfoTagList(InputStream in, String key,
  80                         String separator) throws IOException {
  81                 List<String> list = new ArrayList<String>();
  82                 String tt = getInfoTag(in, key);
  83                 if (tt != null) {
  84                         for (String tag : tt.split(separator)) {
  85                                 list.add(tag.trim());
  86                         }
  87                 }
  88
  89                 return list;
  90         }
  91
  92         /**
  93          * Return the value of the given tag in the <tt>.info</tt> file if present.
  94          *
  95          * @param key
  96          *            the tag key
  97          *
  98          * @return the value or NULL
  99          *
 100          * @throws IOException
 101          *             in case of I/O error
 102          */
 103         private static String getInfoTag(InputStream in, String key)
 104                         throws IOException {
 105                 key = "^" + key + "=";
 106
 107                 if (in != null) {
 108                         in.reset();
 109                         String value = BasicSupport.getLine(in, key, 0);
 110                         if (value != null && !value.isEmpty()) {
 111                                 value = value.trim().substring(key.length() - 1).trim();
 112                                 if (value.startsWith("'") && value.endsWith("'")
 113                                                 || value.startsWith("\"") && value.endsWith("\"")) {
 114                                         value = value.substring(1, value.length() - 1).trim();
 115                                 }
 116
 117                                 return value;
 118                         }
 119                 }
 120
 121                 return null;
 122         }
 123 }