--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/app/django/contrib/gis/utils/ogrinfo.py	Tue Oct 14 16:00:59 2008 +0000
@@ -0,0 +1,53 @@
+"""
+This module includes some utility functions for inspecting the layout
+of a GDAL data source -- the functionality is analogous to the output
+produced by the `ogrinfo` utility.
+"""
+
+from django.contrib.gis.gdal import DataSource
+from django.contrib.gis.gdal.geometries import GEO_CLASSES
+
+def ogrinfo(data_source, num_features=10):
+    """
+    Walks the available layers in the supplied `data_source`, displaying
+    the fields for the first `num_features` features.
+    """
+
+    # Checking the parameters.
+    if isinstance(data_source, str):
+        data_source = DataSource(data_source)
+    elif isinstance(data_source, DataSource):
+        pass
+    else:
+        raise Exception, 'Data source parameter must be a string or a DataSource object.'
+
+    for i, layer in enumerate(data_source):
+        print "data source : %s" % data_source.name
+        print "==== layer %s" % i
+        print "  shape type: %s" % GEO_CLASSES[layer.geom_type.num].__name__
+        print "  # features: %s" % len(layer)
+        print "         srs: %s" % layer.srs
+        extent_tup = layer.extent.tuple
+        print "      extent: %s - %s" % (extent_tup[0:2], extent_tup[2:4])
+        print "Displaying the first %s features ====" % num_features
+
+        width = max(*map(len,layer.fields))
+        fmt = " %%%ss: %%s" % width
+        for j, feature in enumerate(layer[:num_features]):
+            print "=== Feature %s" % j
+            for fld_name in layer.fields:
+                type_name = feature[fld_name].type_name
+                output = fmt % (fld_name, type_name)
+                val = feature.get(fld_name)
+                if val:
+                    if isinstance(val, str):
+                        val_fmt = ' ("%s")'
+                    else:
+                        val_fmt = ' (%s)'
+                    output += val_fmt % val
+                else:
+                    output += ' (None)'
+                print output
+
+# For backwards compatibility.
+sample = ogrinfo