X-Git-Url: http://gitweb.fperrin.net/?p=GpsPrune.git;a=blobdiff_plain;f=src%2Ftim%2Fprune%2FExternalTools.java;fp=src%2Ftim%2Fprune%2FExternalTools.java;h=8cd1aef178f44c80674af5923a7a4937ec9e4466;hp=0000000000000000000000000000000000000000;hb=ce6f2161b8596f7018d6a76bff79bc9e571f35fd;hpb=2d8cb72e84d5cc1089ce77baf1e34ea3ea2f8465

diff --git a/src/tim/prune/ExternalTools.java b/src/tim/prune/ExternalTools.java
new file mode 100644
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--- /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;
+		}
+	}
+}