Added support for exporting mac app icons.

pycns.py

@@ -0,0 +1,28 @@
+from icns_info import *
+from image_utils import Image, nearest_icon_size, resize
+import sys
+
+"""This module takes any image that is readable by PIL and exports it to an icns file.
+The image will be scaled keeping the aspect ratio if it is a non square image.
+"""
+
+def encode_image_to_icns(image_path):
+    """Takes an image and converts it to icns. Image aspect ratio will remain intact."""
+    i = Image(image_path)
+    icns_header = ICNSHeader()
+    f_data = icns_header.parse_image(i)
+    return f_data
+
+def save_icns(image_path, icns_path):
+    im_data = encode_image_to_icns(image_path)
+    icns_path = icns_path if icns_path.endswith('.icns') else icns_path+'.icns'
+    open(icns_path, 'wb+').write(im_data)
+
+if __name__ == '__main__':
+    if len(sys.argv) != 3:
+        print 'Usage: pycns input_image_path output_icns_path'
+        sys.exit()
+
+    image_path, icns_path = sys.argv[1:3]
+
+    save_icns(image_path, icns_path)