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Tweak the rules for to_canonical to better handle subdirs.

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This commit is contained in:
Chase Sterling 2015-12-09 22:03:43 -05:00
parent 93df0e081a
commit 6d62d6b8b4
1 changed files with 12 additions and 11 deletions
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23
realms/lib/util.py
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@ -83,24 +83,25 @@ def clean_url(url):
def to_canonical(s):
"""
Remove leading/trailing whitespace
Remove leading underscores and backslashes "/"
Remove leading/trailing whitespace (from all path components)
Remove leading underscores and slashes "/"
Convert spaces to dashes "-"
Limit to first 128 chars
Limit path components to 63 chars and total size to 436 chars
"""
reserved_chars = "&$+,:;=?@#"
unsafe_chars = "?<>[]{}|\^~%"
s = s.encode('utf8')
s = str(s)
s = s.strip()
s = s.lstrip('_')
s = s.lstrip('/')
s = re.sub(r"\s", "-", s)
s = re.sub(r"/+", "/", s)
s = s.encode("utf8")
s = re.sub(r"\s+", " ", s)
s = s.lstrip("_/ ")
s = re.sub(r"[" + re.escape(reserved_chars) + "]", "", s)
s = re.sub(r"[" + re.escape(unsafe_chars) + "]", "", s)
s = s[:128]
# Strip leading/trailing spaces from path components, replace internal spaces
# with '-', and truncate to 63 characters.
parts = (part.strip().replace(" ", "-")[:63] for part in s.split("/"))
# Join any non-empty path components back together
s = "/".join(filter(None, parts))
s = s[:436]
return s