[Assorted-commits] SF.net SVN: assorted:[980] python-commons/trunk/src/commons/files.py

[<yan...@us...>]

Revision: 980
          http://assorted.svn.sourceforge.net/assorted/?rev=980&view=rev
Author:   yangzhang
Date:     2008-10-02 19:13:44 +0000 (Thu, 02 Oct 2008)

Log Message:
-----------
added read_file, write_file, write_or_rm, is_nonempty_file from 6.00 code

Modified Paths:
--------------
    python-commons/trunk/src/commons/files.py

Modified: python-commons/trunk/src/commons/files.py
===================================================================
--- python-commons/trunk/src/commons/files.py	2008-10-02 18:47:14 UTC (rev 979)
+++ python-commons/trunk/src/commons/files.py	2008-10-02 19:13:44 UTC (rev 980)
@@ -169,3 +169,22 @@
     else:
         # cache up-to-date (should be available since dlcs-timestamp exists!)
         with file(cache_path) as f: return load(f)
+
+def read_file(path):
+    f = file(path)
+    try: return f.read()
+    finally: f.close()
+
+def write_file(path, contents):
+    f = file(path,'w')
+    try: f.write(contents)
+    finally: f.close()
+
+def write_or_rm(p, contents):
+    'Write the file or remove it if contents is empty.'
+    p = path(p)
+    if contents.strip(): write_file(p, contents)
+    elif p.isfile(): p.remove()
+
+def is_nonempty_file(path):
+    return path.isfile() and read_file(path).strip() != ''


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