/*
* Copyright (C) 2011-2012 Dr. John Lindsay <jlindsay@uoguelph.ca>
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
package plugins;
import java.io.*;
import whitebox.geospatialfiles.WhiteboxRaster;
import whitebox.interfaces.InteropPlugin;
import whitebox.interfaces.WhiteboxPlugin;
import whitebox.interfaces.WhiteboxPluginHost;
/**
* This tool can be used to export a Whitebox GAT raster file to a Surfer (Golden Software) ASCII grid file.
* @author Dr. John Lindsay email: jlindsay@uoguelph.ca
*/
public class ExportSurferAsciiGrid implements WhiteboxPlugin, InteropPlugin {
private WhiteboxPluginHost myHost = null;
private String[] args;
/**
* Used to retrieve the plugin tool's name. This is a short, unique name containing no spaces.
* @return String containing plugin name.
*/
@Override
public String getName() {
return "ExportSurferAsciiGrid";
}
/**
* Used to retrieve the plugin tool's descriptive name. This can be a longer name (containing spaces) and is used in the interface to list the tool.
* @return String containing the plugin descriptive name.
*/
@Override
public String getDescriptiveName() {
return "Export Surfer ASCII Grid";
}
/**
* Used to retrieve a short description of what the plugin tool does.
* @return String containing the plugin's description.
*/
@Override
public String getToolDescription() {
return "Exports a Surfer ASCII grid file (.grd).";
}
/**
* Used to identify which toolboxes this plugin tool should be listed in.
* @return Array of Strings.
*/
@Override
public String[] getToolbox() {
String[] ret = {"IOTools"};
return ret;
}
/**
* Sets the WhiteboxPluginHost to which the plugin tool is tied. This is the class
* that the plugin will send all feedback messages, progress updates, and return objects.
* @param host The WhiteboxPluginHost that called the plugin tool.
*/
@Override
public void setPluginHost(WhiteboxPluginHost host) {
myHost = host;
}
/**
* Used to communicate feedback pop-up messages between a plugin tool and the main Whitebox user-interface.
* @param feedback String containing the text to display.
*/
private void showFeedback(String message) {
if (myHost != null) {
myHost.showFeedback(message);
} else {
System.out.println(message);
}
}
/**
* Used to communicate a return object from a plugin tool to the main Whitebox user-interface.
* @return Object, such as an output WhiteboxRaster.
*/
private void returnData(Object ret) {
if (myHost != null) {
myHost.returnData(ret);
}
}
private int previousProgress = 0;
private String previousProgressLabel = "";
/**
* Used to communicate a progress update between a plugin tool and the main Whitebox user interface.
* @param progressLabel A String to use for the progress label.
* @param progress Float containing the progress value (between 0 and 100).
*/
private void updateProgress(String progressLabel, int progress) {
if (myHost != null && ((progress != previousProgress)
|| (!progressLabel.equals(previousProgressLabel)))) {
myHost.updateProgress(progressLabel, progress);
}
previousProgress = progress;
previousProgressLabel = progressLabel;
}
/**
* Used to communicate a progress update between a plugin tool and the main Whitebox user interface.
* @param progress Float containing the progress value (between 0 and 100).
*/
private void updateProgress(int progress) {
if (myHost != null && progress != previousProgress) {
myHost.updateProgress(progress);
}
previousProgress = progress;
}
/**
* Sets the arguments (parameters) used by the plugin.
* @param args An array of string arguments.
*/
@Override
public void setArgs(String[] args) {
this.args = args.clone();
}
private boolean cancelOp = false;
/**
* Used to communicate a cancel operation from the Whitebox GUI.
* @param cancel Set to true if the plugin should be canceled.
*/
@Override
public void setCancelOp(boolean cancel) {
cancelOp = cancel;
}
private void cancelOperation() {
showFeedback("Operation cancelled.");
updateProgress("Progress: ", 0);
}
private boolean amIActive = false;
/**
* Used by the Whitebox GUI to tell if this plugin is still running.
* @return a boolean describing whether or not the plugin is actively being used.
*/
@Override
public boolean isActive() {
return amIActive;
}
/**
* Used to execute this plugin tool.
*/
@Override
public void run() {
amIActive = true;
String inputFilesString = null;
String grassFile = null;
String whiteboxHeaderFile = null;
int i = 0;
int row, col, rows, cols;
String[] imageFiles;
int numImages = 0;
double noData = -32768;
InputStream inStream = null;
OutputStream outStream = null;
int progress = 0;
String str1 = null;
FileWriter fw = null;
BufferedWriter bw = null;
PrintWriter out = null;
if (args.length <= 0) {
showFeedback("Plugin parameters have not been set.");
return;
}
for (i = 0; i < args.length; i++) {
if (i == 0) {
inputFilesString = args[i];
}
}
// check to see that the inputHeader and outputHeader are not null.
if ((inputFilesString == null)) {
showFeedback("One or more of the input parameters have not been set properly.");
return;
}
imageFiles = inputFilesString.split(";");
numImages = imageFiles.length;
try {
for (i = 0; i < numImages; i++) {
if (numImages > 1) {
progress = (int) (100f * i / (numImages - 1));
updateProgress("Loop " + (i + 1) + " of " + numImages + ":", progress);
}
whiteboxHeaderFile = imageFiles[i];
// check to see if the file exists.
if (!((new File(whiteboxHeaderFile)).exists())) {
showFeedback("Whitebox raster file does not exist.");
break;
}
WhiteboxRaster wbr = new WhiteboxRaster(whiteboxHeaderFile, "r");
rows = wbr.getNumberRows();
cols = wbr.getNumberColumns();
noData = wbr.getNoDataValue();
// grass file name.
grassFile = whiteboxHeaderFile.replace(".dep", ".grd");
// see if it exists, and if so, delete it.
(new File(grassFile)).delete();
// deal with the header data first
fw = new FileWriter(grassFile, false);
bw = new BufferedWriter(fw);
out = new PrintWriter(bw, true);
str1 = "DSAA"; // Surfer ASCII GRD ID
out.println(str1);
str1 = String.valueOf(cols) + " " + String.valueOf(rows);
out.println(str1);
double xMin = Math.min(wbr.getEast(), wbr.getWest());
double xMax = Math.max(wbr.getEast(), wbr.getWest());
str1 = String.valueOf(xMin) + " " + String.valueOf(xMax);
out.println(str1);
double yMin = Math.min(wbr.getNorth(), wbr.getSouth());
double yMax = Math.max(wbr.getNorth(), wbr.getSouth());
str1 = String.valueOf(yMin) + " " + String.valueOf(yMax);
out.println(str1);
str1 = String.valueOf(0) + " " + String.valueOf(1);
out.println(str1);
// copy the data file.
double[] data = null;
String line = "";
if (wbr.getDataType() == WhiteboxRaster.DataType.FLOAT ||
wbr.getDataType() == WhiteboxRaster.DataType.DOUBLE) {
for (row = rows - 1; row >= 0; row--) {
data = wbr.getRowValues(row);
line = "";
str1 = "";
for (col = 0; col < cols; col++) {
if (col != 0) {
str1 = " ";
}
if (data[col] != noData) {
str1 += String.valueOf((float) data[col]);
} else {
str1 += "-9999";
}
line += str1;
}
out.println(line);
if (cancelOp) {
cancelOperation();
return;
}
progress = (int) (100f * (rows - 1 - row) / (rows - 1));
updateProgress(progress);
}
} else {
for (row = rows - 1; row >= 0; row--) {
data = wbr.getRowValues(row);
line = "";
str1 = "";
for (col = 0; col < cols; col++) {
if (col != 0) {
str1 = " ";
}
if (data[col] != noData) {
str1 += String.valueOf((int)data[col]);
} else {
str1 += "-9999";
}
line += str1;
}
out.println(line);
if (cancelOp) {
cancelOperation();
return;
}
progress = (int) (100f * (rows - 1 - row) / (rows - 1));
updateProgress(progress);
}
}
wbr.close();
// delete the temp file's header file (data file has already been renamed).
(new File(whiteboxHeaderFile.replace(".dep", "_temp.dep"))).delete();
}
} catch (OutOfMemoryError oe) {
myHost.showFeedback("An out-of-memory error has occurred during operation.");
} catch (Exception e) {
myHost.showFeedback("An error has occurred during operation. See log file for details.");
myHost.logException("Error in " + getDescriptiveName(), e);
} finally {
if (out != null || bw != null) {
out.flush();
out.close();
}
updateProgress("Progress: ", 0);
// tells the main application that this process is completed.
amIActive = false;
myHost.pluginComplete();
}
}
/**
* Used to retrieve the necessary extensions.
* @return String containing the extensions.
*/
@Override
public String[] getExtensions() {
return new String[]{ "txt" };
}
/**
* Used to retrieve the file type name.
* @return String containing the file type name.
*/
@Override
public String getFileTypeName() {
return "ArcGIS ASCII Grid";
}
/**
* Used to check if the file is raster format.
* @return Boolean true if file is raster format.
*/
@Override
public boolean isRasterFormat() {
return true;
}
/**
* Used to retrieve the interoperable plugin type.
* @return
*/
@Override
public InteropPlugin.InteropPluginType getInteropPluginType() {
return InteropPlugin.InteropPluginType.exportPlugin;
}
}