Support file names or string urls when loading Rasters

Author: jericks

src/main/groovy/geoscript/layer/Format.groovy

@@ -230,6 +230,27 @@ class Format {
      * @return A Format
      */
     static Format getFormat(Object input) {
+        // Support file names and string urls
+        if (input instanceof String) {
+            String str = input as String
+            boolean isFileOrUrl = ['tif','png','jpg','jpeg','gif','arx','sid','asc','nc'].find { String ext ->
+                str.endsWith(ext)
+            }
+            if (isFileOrUrl) {
+                boolean isUrl = false
+                try {
+                    URL url = new URL(str)
+                    isUrl = true
+                } catch(MalformedURLException ex) {
+                    // Do nothing, just means that it must be a file
+                }
+                if (isUrl) {
+                    input = new URL(str)
+                } else {
+                    input = new File(str)
+                }
+            }
+        }
         if(input instanceof File) {
             File file = input as File
             if (file.exists()) {
@@ -280,7 +301,7 @@ class Format {
             AbstractGridFormat format = GridFormatFinder.findFormat(input);
             if (format == null || format instanceof UnknownFormat) {
                 return null
-            }else{
+            } else {
                 return new Format(format, input)
             }
         }

src/test/groovy/geoscript/layer/FormatTestCase.groovy

@@ -1,5 +1,6 @@
 package geoscript.layer
 
+import geoscript.geom.Geometry
 import org.junit.Test
 import static org.junit.Assert.*
 
@@ -24,13 +25,26 @@ class FormatTestCase {
         assertNotNull(format.stream)
         assertTrue(format instanceof NetCDF)
 
-        // New file
+        // New png file
         file = new File("doesnotexist.png")
         format = Format.getFormat(file)
         assertNotNull(format)
         assertNotNull(format.stream)
         assertTrue(format instanceof WorldImage)
 
+        // New tif File
+        file = new File("doesnotexist.tif")
+        format = Format.getFormat(file)
+        assertNotNull(format)
+        assertNotNull(format.stream)
+        assertTrue(format instanceof GeoTIFF)
+
+        // New tif File name
+        format = Format.getFormat("doesnotexist.tif")
+        assertNotNull(format)
+        assertNotNull(format.stream)
+        assertTrue(format instanceof GeoTIFF)
+
         // Not a Raster form a new file
         file = new File("states.shp")
         format = Format.getFormat(file)