From 6dae7a234e92d40a2479fd7e386cf5372ca391f7 Mon Sep 17 00:00:00 2001
From: Damien George <damien.p.george@gmail.com>
Date: Thu, 4 Jun 2015 22:46:08 +0100
Subject: [PATCH] ffilib: Initial version of wrapper for ffi module.

---
 ffilib/ffilib.py    | 29 +++++++++++++++++++++++++++++
 ffilib/metadata.txt |  7 +++++++
 ffilib/setup.py     | 18 ++++++++++++++++++
 3 files changed, 54 insertions(+)
 create mode 100644 ffilib/ffilib.py
 create mode 100644 ffilib/metadata.txt
 create mode 100644 ffilib/setup.py

diff --git a/ffilib/ffilib.py b/ffilib/ffilib.py
new file mode 100644
index 00000000..df9222ca
--- /dev/null
+++ b/ffilib/ffilib.py
@@ -0,0 +1,29 @@
+import sys
+import ffi
+
+_cache = {}
+
+def open(name, maxver=10, extra=()):
+    try:
+        return _cache[name]
+    except KeyError:
+        pass
+    def libs():
+        if sys.platform == "linux":
+            yield '%s.so' % name
+            for i in range(maxver, -1, -1):
+                yield '%s.so.%u' % (name, i)
+        else:
+            for ext in ('dylib', 'dll'):
+                yield '%s.%s' % (name, ext)
+        for n in extra:
+            yield n
+    err = None
+    for n in libs():
+        try:
+            l = ffi.open(n)
+            _cache[name] = l
+            return l
+        except OSError as e:
+            err = e
+    raise err
diff --git a/ffilib/metadata.txt b/ffilib/metadata.txt
new file mode 100644
index 00000000..aeaccb0b
--- /dev/null
+++ b/ffilib/metadata.txt
@@ -0,0 +1,7 @@
+dist_name = ffilib
+srctype = micropython-lib
+type = module
+version = 0.1.0
+author = Damien George
+desc = MicroPython FFI helper module
+long_desc = MicroPython FFI helper module to easily interface with underlying shared libraries
diff --git a/ffilib/setup.py b/ffilib/setup.py
new file mode 100644
index 00000000..eb83f4ac
--- /dev/null
+++ b/ffilib/setup.py
@@ -0,0 +1,18 @@
+import sys
+# Remove current dir from sys.path, otherwise setuptools will peek up our
+# module instead of system.
+sys.path.pop(0)
+from setuptools import setup
+
+
+setup(name='micropython-ffilib',
+      version='0.1.0',
+      description='MicroPython FFI helper module',
+      long_description='MicroPython FFI helper module to easily interface with underlying shared libraries',
+      url='https://github.com/micropython/micropython/issues/405',
+      author='Damien George',
+      author_email='micro-python@googlegroups.com',
+      maintainer='MicroPython Developers',
+      maintainer_email='micro-python@googlegroups.com',
+      license='MIT',
+      py_modules=['ffilib'])