# replace a target file with a new contents - checks for changes
# return True if a change occurred, in which case
# chown/chmod settings should be taken care of
-def replace_file_with_string (target, new_contents):
+def replace_file_with_string (target, new_contents, chmod=None, remove_if_empty=False):
try:
current=file(target).read()
except:
current=""
- # xxx if verbose, report diffs...
if current==new_contents:
+ # if turns out to be an empty string, and remove_if_empty is set,
+ # then make sure to trash the file if it exists
+ if remove_if_empty and os.path.isfile(target):
+ try: os.unlink(target)
+ finally: return True
return False
# overwrite target file
f=file(target,'w')
f.write(new_contents)
f.close()
+ if chmod: os.chmod(target,chmod)
return True
# not needed yet - should that unlink the new file ?