Change directory structure.

[dvibrowser/dvi2epub.git] / src / main / java / jp / sourceforge / dvibrowser / dvicore / image / pnm / PnmBitAsciiFilter.java

diff --git a/src/main/java/jp/sourceforge/dvibrowser/dvicore/image/pnm/PnmBitAsciiFilter.java b/src/main/java/jp/sourceforge/dvibrowser/dvicore/image/pnm/PnmBitAsciiFilter.java
new file mode 100644 (file)
index 0000000..c0e6f3c
--- /dev/null
+++ b/src/main/java/jp/sourceforge/dvibrowser/dvicore/image/pnm/PnmBitAsciiFilter.java
@@ -0,0 +1,73 @@
+package jp.sourceforge.dvibrowser.dvicore.image.pnm;
+/*
+ * Copyright (c) 2009, Takeyuki Nagao
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the
+ * following conditions are met:
+ * 
+ *  * Redistributions of source code must retain the above
+ *    copyright notice, this list of conditions and the
+ *    following disclaimer.
+ *  * Redistributions in binary form must reproduce the above
+ *    copyright notice, this list of conditions and the
+ *    following disclaimer in the documentation and/or other
+ *    materials provided with the distribution.
+ *    
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ */
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+
+public class PnmBitAsciiFilter
+extends AbstractPnmAsciiFilter
+{
+  public PnmBitAsciiFilter(InputStream in) {
+    super(in);
+  }
+  
+  protected synchronized byte [] fillBuffer() throws IOException
+  {
+    ByteArrayOutputStream baos = new ByteArrayOutputStream();
+    String line = reader.readLine();
+    if (line == null) {
+      throw new IOException("EOF detected while reading the input");
+    }
+    while (line.length() > 0) {
+      String d = null;
+      if (line.length() >= 8) {
+        d = line.substring(0, 8);
+        line = line.substring(8);
+      } else {
+        d = (line + "0000000").substring(0, 8);
+        line = "";
+      }
+      try {
+        baos.write(Integer.parseInt(d, 2));
+      } catch (NumberFormatException e) {
+        throw new IOException("Input format error: data is not binary: " + line);
+      }
+    }
+    if (baos.size() == 0) {
+      throw new IOException("EOF detected while reading the input");
+    }
+    return baos.toByteArray();
+  }
+}