--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/app/django/contrib/gis/gdal/prototypes/srs.py	Tue Oct 14 16:00:59 2008 +0000
@@ -0,0 +1,71 @@
+from ctypes import c_char_p, c_int, c_void_p, POINTER
+from django.contrib.gis.gdal.libgdal import lgdal, std_call
+from django.contrib.gis.gdal.prototypes.generation import \
+    const_string_output, double_output, int_output, \
+    srs_output, string_output, void_output
+
+## Shortcut generation for routines with known parameters.
+def srs_double(f):
+    """
+    Creates a function prototype for the OSR routines that take
+    the OSRSpatialReference object and
+    """
+    return double_output(f, [c_void_p, POINTER(c_int)], errcheck=True)
+
+def units_func(f):
+    """
+    Creates a ctypes function prototype for OSR units functions, e.g.,
+    OSRGetAngularUnits, OSRGetLinearUnits.
+    """
+    return double_output(f, [c_void_p, POINTER(c_char_p)], strarg=True)
+
+# Creation & destruction.
+clone_srs = srs_output(std_call('OSRClone'), [c_void_p])
+new_srs = srs_output(std_call('OSRNewSpatialReference'), [c_char_p])
+release_srs = void_output(lgdal.OSRRelease, [c_void_p], errcheck=False)
+destroy_srs = void_output(std_call('OSRDestroySpatialReference'), [c_void_p], errcheck=False)
+srs_validate = void_output(lgdal.OSRValidate, [c_void_p])
+
+# Getting the semi_major, semi_minor, and flattening functions.
+semi_major = srs_double(lgdal.OSRGetSemiMajor)
+semi_minor = srs_double(lgdal.OSRGetSemiMinor)
+invflattening = srs_double(lgdal.OSRGetInvFlattening)
+
+# WKT, PROJ, EPSG, XML importation routines.
+from_wkt = void_output(lgdal.OSRImportFromWkt, [c_void_p, POINTER(c_char_p)])
+from_proj = void_output(lgdal.OSRImportFromProj4, [c_void_p, c_char_p])
+from_epsg = void_output(std_call('OSRImportFromEPSG'), [c_void_p, c_int])
+from_xml = void_output(lgdal.OSRImportFromXML, [c_void_p, c_char_p])
+
+# Morphing to/from ESRI WKT.
+morph_to_esri = void_output(lgdal.OSRMorphToESRI, [c_void_p])
+morph_from_esri = void_output(lgdal.OSRMorphFromESRI, [c_void_p])
+
+# Identifying the EPSG
+identify_epsg = void_output(lgdal.OSRAutoIdentifyEPSG, [c_void_p])
+
+# Getting the angular_units, linear_units functions
+linear_units = units_func(lgdal.OSRGetLinearUnits)
+angular_units = units_func(lgdal.OSRGetAngularUnits)
+
+# For exporting to WKT, PROJ.4, "Pretty" WKT, and XML.
+to_wkt = string_output(std_call('OSRExportToWkt'), [c_void_p, POINTER(c_char_p)])
+to_proj = string_output(std_call('OSRExportToProj4'), [c_void_p, POINTER(c_char_p)])
+to_pretty_wkt = string_output(std_call('OSRExportToPrettyWkt'), [c_void_p, POINTER(c_char_p), c_int], offset=-2)
+
+# Memory leak fixed in GDAL 1.5; still exists in 1.4.
+to_xml = string_output(lgdal.OSRExportToXML, [c_void_p, POINTER(c_char_p), c_char_p], offset=-2)
+
+# String attribute retrival routines.
+get_attr_value = const_string_output(std_call('OSRGetAttrValue'), [c_void_p, c_char_p, c_int])
+get_auth_name = const_string_output(lgdal.OSRGetAuthorityName, [c_void_p, c_char_p])
+get_auth_code = const_string_output(lgdal.OSRGetAuthorityCode, [c_void_p, c_char_p])
+
+# SRS Properties
+isgeographic = int_output(lgdal.OSRIsGeographic, [c_void_p])
+islocal = int_output(lgdal.OSRIsLocal, [c_void_p])
+isprojected = int_output(lgdal.OSRIsProjected, [c_void_p])
+
+# Coordinate transformation
+new_ct= srs_output(std_call('OCTNewCoordinateTransformation'), [c_void_p, c_void_p])
+destroy_ct = void_output(std_call('OCTDestroyCoordinateTransformation'), [c_void_p], errcheck=False)