Add FileManager.findFilesByMimeType API

Core/src/org/sleuthkit/autopsy/casemodule/services/FileManager.java

@@ -65,6 +65,54 @@ public class FileManager implements Closeable {
         this.caseDb = caseDb;
     }
 
+    /**
+     * Finds all files with types that match one of a collection of MIME types.
+     *
+     * @param mimeTypes The MIME types.
+     *
+     * @return The files.
+     *
+     * @throws TskCoreException If there is a problem querying the case
+     *                          database.
+     */
+    public synchronized List<AbstractFile> findFilesByMimeType(Collection<String> mimeTypes) throws TskCoreException {
+        if (null == caseDb) {
+            throw new TskCoreException("File manager has been closed");
+        }
+        return caseDb.findAllFilesWhere(createFileTypeInCondition(mimeTypes));
+    }
+
+    /**
+     * Finds all files in a given data source (image, local/logical files set,
+     * etc.) with types that match one of a collection of MIME types.
+     *
+     * @param dataSource The data source.
+     * @param mimeTypes  The MIME types.
+     *
+     * @return The files.
+     *
+     * @throws TskCoreException If there is a problem querying the case
+     *                          database.
+     */
+    public synchronized List<AbstractFile> findFilesByMimeType(Content dataSource, Collection<String> mimeTypes) throws TskCoreException {
+        if (null == caseDb) {
+            throw new TskCoreException("File manager has been closed");
+        }
+        return caseDb.findAllFilesWhere("data_source_obj_id = " + dataSource.getId() + " AND " + createFileTypeInCondition(mimeTypes));
+    }
+
+    /**
+     * Converts a list of MIME types into an SQL "mime_type IN" condition.
+     *
+     * @param mimeTypes The MIIME types.
+     *
+     * @return The condition string.
+     */
+    private static String createFileTypeInCondition(Collection<String> mimeTypes) {
+        String types = StringUtils.join(mimeTypes, "', '");
+        return "mime_type IN ('" + types + "')";
+    }
+        
     /**
      * Finds all files and directories with a given file name. The name search
      * is for full or partial matches and is case insensitive (a case