Library scanning much quicker

[fanfix.git] / src / be / nikiroo / fanfix / supported / InfoReader.java

diff --git a/src/be/nikiroo/fanfix/supported/InfoReader.java b/src/be/nikiroo/fanfix/supported/InfoReader.java
new file mode 100644 (file)
index 0000000..1695ebd
--- /dev/null
+++ b/src/be/nikiroo/fanfix/supported/InfoReader.java
@@ -0,0 +1,123 @@
+package be.nikiroo.fanfix.supported;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.ArrayList;
+import java.util.List;
+
+import be.nikiroo.fanfix.data.MetaData;
+import be.nikiroo.utils.MarkableFileInputStream;
+
+// not complete: no "description" tag
+public class InfoReader {
+       public static MetaData readMeta(File infoFile) throws IOException {
+               if (infoFile == null) {
+                       throw new IOException("File is null");
+               }
+
+               if (infoFile.exists()) {
+                       InputStream in = new MarkableFileInputStream(new FileInputStream(
+                                       infoFile));
+                       try {
+                               return createMeta(in);
+                       } finally {
+                               in.close();
+                               in = null;
+                       }
+               } else {
+                       throw new FileNotFoundException(
+                                       "File given as argument does not exists: "
+                                                       + infoFile.getAbsolutePath());
+               }
+       }
+
+       private static MetaData createMeta(InputStream in) throws IOException {
+               MetaData meta = new MetaData();
+
+               meta.setTitle(getInfoTag(in, "TITLE"));
+               meta.setAuthor(getInfoTag(in, "AUTHOR"));
+               meta.setDate(getInfoTag(in, "DATE"));
+               meta.setTags(getInfoTagList(in, "TAGS", ","));
+               meta.setSource(getInfoTag(in, "SOURCE"));
+               meta.setPublisher(getInfoTag(in, "PUBLISHER"));
+               meta.setUuid(getInfoTag(in, "UUID"));
+               meta.setLuid(getInfoTag(in, "LUID"));
+               meta.setLang(getInfoTag(in, "LANG"));
+               meta.setSubject(getInfoTag(in, "SUBJECT"));
+               meta.setType(getInfoTag(in, "TYPE"));
+               meta.setImageDocument(getInfoTagBoolean(in, "IMAGES_DOCUMENT", false));
+               meta.setCover(BasicSupport.getImage(null, getInfoTag(in, "COVER")));
+
+               if (meta.getCover() == null) {
+                       meta.setCover(BasicSupport.getDefaultCover(meta.getSubject()));
+               }
+
+               return meta;
+       }
+
+       private static boolean getInfoTagBoolean(InputStream in, String key,
+                       boolean def) throws IOException {
+               Boolean value = getInfoTagBoolean(in, key);
+               return value == null ? def : value;
+       }
+
+       private static Boolean getInfoTagBoolean(InputStream in, String key)
+                       throws IOException {
+               String value = getInfoTag(in, key);
+               if (value != null && !value.trim().isEmpty()) {
+                       value = value.toLowerCase().trim();
+                       return value.equals("1") || value.equals("on")
+                                       || value.equals("true") || value.equals("yes");
+               }
+
+               return null;
+       }
+
+       private static List<String> getInfoTagList(InputStream in, String key,
+                       String separator) throws IOException {
+               List<String> list = new ArrayList<String>();
+               String tt = getInfoTag(in, key);
+               if (tt != null) {
+                       for (String tag : tt.split(separator)) {
+                               list.add(tag.trim());
+                       }
+               }
+
+               return list;
+       }
+
+       /**
+        * Return the value of the given tag in the <tt>.info</tt> file if present.
+        * 
+        * @param key
+        *            the tag key
+        * 
+        * @return the value or NULL
+        * 
+        * @throws IOException
+        *             in case of I/O error
+        */
+       private static String getInfoTag(InputStream in, String key)
+                       throws IOException {
+               key = "^" + key + "=";
+
+               if (in != null) {
+                       in.reset();
+                       String value = BasicSupport.getLine(in, key, 0);
+                       if (value != null && !value.isEmpty()) {
+                               value = value.trim().substring(key.length() - 1).trim();
+                               if (value.startsWith("'") && value.endsWith("'")
+                                               || value.startsWith("\"") && value.endsWith("\"")) {
+                                       value = value.substring(1, value.length() - 1).trim();
+                               }
+
+                               return value;
+                       }
+               }
+
+               return null;
+       }
+}