swig: add python (decode) support

similar to Java, simple interface only

Change-Id: I8a3d344e5d89f73627e4e0cb2067512260d46fdd

swig/setup.py

@@ -0,0 +1,40 @@
+#!/usr/bin/python
+
+"""distutils script for libwebp python module."""
+
+from distutils.core import setup
+from distutils.extension import Extension
+import os
+import shutil
+import tempfile
+
+tmpdir = tempfile.mkdtemp()
+package = "com.google.webp"
+package_path = os.path.join(tmpdir, *package.split("."))
+os.makedirs(package_path)
+
+# Create __init_.py files along the package path.
+initpy_path = tmpdir
+for d in package.split("."):
+  initpy_path = os.path.join(initpy_path, d)
+  open(os.path.join(initpy_path, "__init__.py"), "w").close()
+
+shutil.copy2("libwebp.py", package_path)
+setup(name="libwebp",
+      version="0.0",
+      description="libwebp python wrapper",
+      long_description="Provides access to 'simple' libwebp decode interface",
+      license="BSD",
+      url="http://developers.google.com/speed/webp",
+      ext_package=package,
+      ext_modules=[Extension("_libwebp",
+                             ["libwebp_python_wrap.c"],
+                             libraries=["webp"],
+                            ),
+                  ],
+      package_dir={"": tmpdir},
+      packages=["com", "com.google", "com.google.webp"],
+      py_modules=[package + ".libwebp"],
+     )
+
+shutil.rmtree(tmpdir)