added recfile.py

VERSION

@@ -1 +1 @@
-Version 2.9.6-stable+timestamp.2014.09.03.16.37.15
+Version 2.9.6-stable+timestamp.2014.09.04.22.16.03

gluon/recfile.py

@@ -0,0 +1,57 @@
+import os, uuid
+
+def generate(filename, depth=2, base=512):
+    dummyhash = sum(ord(c)*256**(i % 4) for i,c in enumerate(filename)) % base**depth
+    folders = []
+    for level in range(depth-1,-1,-1):
+        code, dummyhash = divmod(dummyhash, base**level)
+        folders.append("%03x" % code)
+    folders.append(filename)
+    return os.path.join(*folders)
+
+def exists(filename, path=None):
+    if os.path.exists(filename):
+        return True
+    if path is None:
+        path, filename = os.path.split(filename)
+    fullfilename = os.path.join(path, generate(filename))
+    if os.path.exists(fullfilename):
+        return True
+    return False
+
+def remove(filename, path=None):
+    if os.path.exists(filename):
+        return os.unlink(filename)
+    if path is None:
+        path, filename = os.path.split(filename)
+    fullfilename = os.path.join(path, generate(filename))
+    if os.path.exists(fullfilename):
+        return os.unlink(fullfilename)
+    raise IOError
+
+def open(filename, mode="r", path=None):
+    if not path:
+        path, filename = os.path.split(filename)
+    fullfilename = None
+    if not mode.startswith('w'):
+        fullfilename = os.path.join(path, filename)
+        if not os.path.exists(fullfilename):
+            fullfilename = None
+    if not fullfilename:
+        fullfilename = os.path.join(path, generate(filename))
+        if mode.startswith('w') and not os.path.exists(os.path.dirname(fullfilename)):
+            os.makedirs(os.path.dirname(fullfilename))
+    return file(fullfilename, mode)
+
+def test():
+    if not os.path.exists('tests'):
+        os.mkdir('tests')
+    for k in range(20):
+        filename = os.path.join('tests',str(uuid.uuid4())+'.test')
+        open(filename, "w").write('test')
+        assert open(filename, "r").read()=='test'
+        if exists(filename):
+            remove(filename)
+
+if __name__ == '__main__':
+    test()