1 files changed, 53 insertions, 0 deletions
diff --git a/paste/util/filemixin.py b/paste/util/filemixin.py
new file mode 100644
index 0000000..b06b039
--- /dev/null
+++ b/paste/util/filemixin.py
@@ -0,0 +1,53 @@
+# (c) 2005 Ian Bicking and contributors; written for Paste (http://pythonpaste.org)
+# Licensed under the MIT license: http://www.opensource.org/licenses/mit-license.php
+
+class FileMixin(object):
+
+    """
+    Used to provide auxiliary methods to objects simulating files.
+    Objects must implement write, and read if they are input files.
+    Also they should implement close.
+
+    Other methods you may wish to override:
+    * flush()
+    * seek(offset[, whence])
+    * tell()
+    * truncate([size])
+
+    Attributes you may wish to provide:
+    * closed
+    * encoding (you should also respect that in write())
+    * mode
+    * newlines (hard to support)
+    * softspace
+    """
+
+    def flush(self):
+        pass
+
+    def next(self):
+        return self.readline()
+
+    def readline(self, size=None):
+        # @@: This is a lame implementation; but a buffer would probably
+        # be necessary for a better implementation
+        output = []
+        while 1:
+            next = self.read(1)
+            if not next:
+                return ''.join(output)
+            output.append(next)
+            if size and size > 0 and len(output) >= size:
+                return ''.join(output)
+            if next == '\n':
+                # @@: also \r?
+                return ''.join(output)
+
+    def xreadlines(self):
+        return self
+
+    def writelines(self, lines):
+        for line in lines:
+            self.write(line)
+
+