Merge branch 'release-0.11'

[jSite.git] / src / main / java / de / todesbaum / util / io / LineInputStream.java

diff --git a/src/main/java/de/todesbaum/util/io/LineInputStream.java b/src/main/java/de/todesbaum/util/io/LineInputStream.java
new file mode 100644 (file)
index 0000000..4fe0d07
--- /dev/null
+++ b/src/main/java/de/todesbaum/util/io/LineInputStream.java
@@ -0,0 +1,63 @@
+/*
+ * jSite - LineInputStream.java - Copyright © 2006–2012 David Roden
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+package de.todesbaum.util.io;
+
+import java.io.FilterInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+
+/**
+ * @author David Roden <droden@gmail.com>
+ * @version $Id$
+ */
+public class LineInputStream extends FilterInputStream {
+
+       private boolean skipLinefeed = false;
+       private StringBuffer lineBuffer = new StringBuffer();
+
+       /**
+        * @param in
+        */
+       public LineInputStream(InputStream in) {
+               super(in);
+       }
+
+       public synchronized String readLine() throws IOException {
+               lineBuffer.setLength(0);
+               int c = 0;
+               while (c != -1) {
+                       c = read();
+                       if ((c == -1) && lineBuffer.length() == 0)
+                               return null;
+                       if (skipLinefeed && (c == '\n')) {
+                               skipLinefeed = false;
+                               continue;
+                       }
+                       skipLinefeed = (c == '\r');
+                       if ((c == '\r') || (c == '\n')) {
+                               c = -1;
+                       } else {
+                               lineBuffer.append((char) c);
+                       }
+               }
+               return lineBuffer.toString();
+       }
+
+}