77 lines
2.1 KiB
Python
77 lines
2.1 KiB
Python
|
"""Mac specific module for conversion between pathnames and URLs."""
|
||
|
|
|
||
|
|
import string
|
||
|
|
import urllib
|
||
|
|
import os
|
||
|
|
|
||
|
|
def url2pathname(pathname):
|
||
|
|
"Convert /-delimited pathname to mac pathname"
|
||
|
|
#
|
||
|
|
# XXXX The .. handling should be fixed...
|
||
|
|
#
|
||
|
|
tp = urllib.splittype(pathname)[0]
|
||
|
|
if tp and tp <> 'file':
|
||
|
|
raise RuntimeError, 'Cannot convert non-local URL to pathname'
|
||
|
|
components = string.split(pathname, '/')
|
||
|
|
# Remove . and embedded ..
|
||
|
|
i = 0
|
||
|
|
while i < len(components):
|
||
|
|
if components[i] == '.':
|
||
|
|
del components[i]
|
||
|
|
elif components[i] == '..' and i > 0 and \
|
||
|
|
components[i-1] not in ('', '..'):
|
||
|
|
del components[i-1:i+1]
|
||
|
|
i = i-1
|
||
|
|
elif components[i] == '' and i > 0 and components[i-1] <> '':
|
||
|
|
del components[i]
|
||
|
|
else:
|
||
|
|
i = i+1
|
||
|
|
if not components[0]:
|
||
|
|
# Absolute unix path, don't start with colon
|
||
|
|
return string.join(components[1:], ':')
|
||
|
|
else:
|
||
|
|
# relative unix path, start with colon. First replace
|
||
|
|
# leading .. by empty strings (giving ::file)
|
||
|
|
i = 0
|
||
|
|
while i < len(components) and components[i] == '..':
|
||
|
|
components[i] = ''
|
||
|
|
i = i + 1
|
||
|
|
return ':' + string.join(components, ':')
|
||
|
|
|
||
|
|
def pathname2url(pathname):
|
||
|
|
"convert mac pathname to /-delimited pathname"
|
||
|
|
if '/' in pathname:
|
||
|
|
raise RuntimeError, "Cannot convert pathname containing slashes"
|
||
|
|
components = string.split(pathname, ':')
|
||
|
|
# Replace empty string ('::') by .. (will result in '/../' later)
|
||
|
|
for i in range(1, len(components)):
|
||
|
|
if components[i] == '':
|
||
|
|
components[i] = '..'
|
||
|
|
# Truncate names longer than 31 bytes
|
||
|
|
components = map(lambda x: x[:31], components)
|
||
|
|
|
||
|
|
if os.path.isabs(pathname):
|
||
|
|
return '/' + string.join(components, '/')
|
||
|
|
else:
|
||
|
|
return string.join(components, '/')
|
||
|
|
|
||
|
|
def test():
|
||
|
|
for url in ["index.html",
|
||
|
|
"bar/index.html",
|
||
|
|
"/foo/bar/index.html",
|
||
|
|
"/foo/bar/",
|
||
|
|
"/"]:
|
||
|
|
print `url`, '->', `url2pathname(url)`
|
||
|
|
for path in ["drive:",
|
||
|
|
"drive:dir:",
|
||
|
|
"drive:dir:file",
|
||
|
|
"drive:file",
|
||
|
|
"file",
|
||
|
|
":file",
|
||
|
|
":dir:",
|
||
|
|
":dir:file"]:
|
||
|
|
print `path`, '->', `pathname2url(path)`
|
||
|
|
|
||
|
|
if __name__ == '__main__':
|
||
|
|
test()
|