Moved source into separate src directory due to popular request

[GpsPrune.git] / src / tim / prune / ExternalTools.java

diff --git a/src/tim/prune/ExternalTools.java b/src/tim/prune/ExternalTools.java
new file mode 100644 (file)
index 0000000..8cd1aef
--- /dev/null
+++ b/src/tim/prune/ExternalTools.java
@@ -0,0 +1,92 @@
+package tim.prune;
+
+import java.io.IOException;
+
+import tim.prune.config.Config;
+
+
+/**
+ * Class to manage interfaces to external tools, like exiftool
+ */
+public abstract class ExternalTools
+{
+       /** Constant for Exiftool */
+       public static final int TOOL_EXIFTOOL = 0;
+       /** Constant for Gpsbabel */
+       public static final int TOOL_GPSBABEL = 1;
+       /** Constant for Gnuplot */
+       public static final int TOOL_GNUPLOT  = 2;
+       /** Constant for Xerces xml library */
+       public static final int TOOL_XERCES   = 3;
+       /** Config keys in order that the tools are defined above */
+       private static final String[] CONFIG_KEYS = {Config.KEY_EXIFTOOL_PATH, Config.KEY_GPSBABEL_PATH, Config.KEY_GNUPLOT_PATH};
+       /** Verification flags for the tools in the order defined above */
+       private static final String[] VERIFY_FLAGS = {"-v", "-V", "-V"};
+
+
+       /**
+        * Check if the selected tool is installed
+        * @param inToolNum number of tool, from constants
+        * @return true if selected tool is installed
+        */
+       public static boolean isToolInstalled(int inToolNum)
+       {
+               switch (inToolNum) {
+                       case TOOL_EXIFTOOL:
+                       case TOOL_GPSBABEL:
+                       case TOOL_GNUPLOT:
+                               String toolPath = Config.getConfigString(CONFIG_KEYS[inToolNum]);
+                               if (toolPath != null && toolPath.length() > 0) {
+                                       return check(toolPath + " " + VERIFY_FLAGS[inToolNum]);
+                               }
+                               break;
+                       case TOOL_XERCES:
+                               try {
+                                       return Class.forName("org.apache.xerces.parsers.SAXParser").getClassLoader() != null;
+                               }
+                               catch (ClassNotFoundException e) {
+                                       // System.err.println(e.getClass().getName() + " : " + e.getMessage());
+                               }
+                               break;
+               }
+               // Not found
+               return false;
+       }
+
+       /**
+        * Check if the selected tool is installed using the given path
+        * @param inToolNum number of tool, from constants
+        * @param inPath selected path to use instead of configured one
+        * @return true if selected tool is installed
+        */
+       public static boolean isToolInstalled(int inToolNum, String inPath)
+       {
+               if (inPath == null || inPath.equals("")) {return false;}
+               switch (inToolNum) {
+                       case TOOL_EXIFTOOL:
+                       case TOOL_GPSBABEL:
+                       case TOOL_GNUPLOT:
+                               return check(inPath + " " + VERIFY_FLAGS[inToolNum]);
+               }
+               // Not found
+               return false;
+       }
+
+       /**
+        * Attempt to call the specified command
+        * @return true if found, false otherwise
+        */
+       private static boolean check(String inCommand)
+       {
+               try
+               {
+                       Runtime.getRuntime().exec(inCommand);
+                       return true;
+               }
+               catch (IOException ioe)
+               {
+                       // exception thrown, command not found
+                       return false;
+               }
+       }
+}