X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Futil%2FPlatform.java;h=3e508eb317ba22ff47b3618cbd9be7f716b77629;hb=ec1d08cc67adaf89176114f7011d5484cc1ff350;hp=e225857d74c1e5931521070bdc37074409340808;hpb=506d60f0e188723ddc91c26824b41ac7034df3fe;p=jalview.git

diff --git a/src/jalview/util/Platform.java b/src/jalview/util/Platform.java
index e225857..3e508eb 100644
--- a/src/jalview/util/Platform.java
+++ b/src/jalview/util/Platform.java
@@ -1,20 +1,19 @@
 /*
- * Jalview - A Sequence Alignment Editor and Viewer (Version 2.4)
- * Copyright (C) 2008 AM Waterhouse, J Procter, G Barton, M Clamp, S Searle
+ * Jalview - A Sequence Alignment Editor and Viewer (Version 2.7)
+ * Copyright (C) 2011 J Procter, AM Waterhouse, J Engelhardt, LM Lui, G Barton, M Clamp, S Searle
  * 
- * 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 file is part of Jalview.
  * 
- * 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.
+ * Jalview 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 3 of the License, or (at your option) any later version.
  * 
- * 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+ * Jalview 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 Jalview.  If not, see <http://www.gnu.org/licenses/>.
  */
 package jalview.util;
 
@@ -36,4 +35,39 @@ public class Platform
 
   }
 
+  public boolean isHeadless()
+  {
+    String hdls = java.lang.System.getProperty("java.awt.headless");
+
+    return hdls != null && hdls.equals("true");
+  }
+
+  /**
+   * 
+   * @return nominal maximum command line length for this platform
+   */
+  public static int getMaxCommandLineLength()
+  {
+    // TODO: determine nominal limits for most platforms.
+    return 2046; // this is the max length for a windows NT system.
+  }
+
+  /**
+   * escape a string according to the local platform's escape character
+   * @param file
+   * @return escaped file
+   */
+  public static String escapeString(String file)
+  {
+    StringBuffer f=new StringBuffer();
+    int p=0,lastp=0;
+    while ((p=file.indexOf('\\',lastp))>-1)
+    {
+      f.append(file.subSequence(lastp,p));
+      f.append("\\\\");
+      lastp=p+1;
+    }
+    f.append(file.substring(lastp));
+    return f.toString();
+  }
 }