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Documented make_short_filename a little bit, since it is not that intuitive to understand.

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This commit is contained in:
Philipp Wolfer
2009-10-04 13:28:24 +02:00
parent 10d9a6a535
commit be669e335c
1 changed files with 10 additions and 2 deletions
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12
picard/util/__init__.py
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@@ -203,12 +203,20 @@ _re_slashes = re.compile(r'[\\/]', re.UNICODE)
def sanitize_filename(string, repl="_"):
return _re_slashes.sub(repl, string)
def make_short_filename(prefix, filename, length=240, max_length=200,
def make_short_filename(prefix, filename, max_path_length=240, max_length=200,
mid_length=32, min_length=2):
"""
Attempts to shorten the file name to the maximum allowed length.
max_path_length: The maximum length of the complete path.
max_length: The maximum length of a single file or directory name.
mid_length: The medium preferred length of a single file or directory.
min_length: The minimum allowed length of a single file or directory.
"""
parts = [part.strip() for part in _re_slashes.split(filename)]
parts.reverse()
filename = os.path.join(*parts)
left = len(prefix) + len(filename) + 1 - length
left = len(prefix) + len(filename) + 1 - max_path_length
for i in range(len(parts)):
left -= max(0, len(parts[i]) - max_length)