Mock object for libquirc.so while building docs on the readthedocs.org

svartalf · svartalf · commit 1bddb30aa5a2 · 2012-05-27T12:46:32.000+09:00
diff --git a/quirc/api/functions.py b/quirc/api/functions.py
@@ -3,6 +3,7 @@
 
 __all__ = ('version', 'new', 'destroy', 'resize', 'begin', 'end', 'count', 'extract', 'decode')
 
+import os
 import ctypes
 from ctypes.util import find_library
 
@@ -13,7 +14,14 @@
 c_int_pointer = ctypes.POINTER(ctypes.c_int)
 c_uint8_pointer = ctypes.POINTER(ctypes.c_uint8)
 
-libquirc = ctypes.CDLL(find_library('quirc'))
+try:
+    libquirc = ctypes.CDLL(find_library('quirc'))
+except OSError:
+    if not 'READTHEDOCS' in os.environ:
+        raise
+
+    from quirc.compat import Mock
+    libquirc = Mock()
 
 version = libquirc.quirc_version
 version.restype = ctypes.c_char_p
diff --git a/quirc/compat.py b/quirc/compat.py
@@ -16,3 +16,22 @@
         import Image
     except ImportError:
         have_pil = False
+
+
+class Mock(object):
+    """Simple mock object for replacing `libquirc` library while building a docs on the readthedocs.org"""
+
+    def __init__(self, *args, **kwargs):
+        pass
+
+    def __call__(self, *args, **kwargs):
+        return Mock()
+
+    @classmethod
+    def __getattr__(cls, name):
+        if name in ('__file__', '__path__'):
+            return '/dev/null'
+        elif name[0] == name[0].upper():
+            return type(name, (), {})
+        else:
+            return Mock()
