98 lines
3.2 KiB
Python
98 lines
3.2 KiB
Python
|
"""Macintosh-specific module for conversion between pathnames and URLs.
|
||
|
|
|
||
|
|
Do not import directly; use urllib instead."""
|
||
|
|
|
||
|
|
import urllib
|
||
|
|
import os
|
||
|
|
|
||
|
|
__all__ = ["url2pathname","pathname2url"]
|
||
|
|
|
||
|
|
def url2pathname(pathname):
|
||
|
|
"""OS-specific conversion from a relative URL of the 'file' scheme
|
||
|
|
to a file system path; not recommended for general use."""
|
||
|
|
#
|
||
|
|
# 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'
|
||
|
|
# Turn starting /// into /, an empty hostname means current host
|
||
|
|
if pathname[:3] == '///':
|
||
|
|
pathname = pathname[2:]
|
||
|
|
elif pathname[:2] == '//':
|
||
|
|
raise RuntimeError, 'Cannot convert non-local URL to pathname'
|
||
|
|
components = pathname.split('/')
|
||
|
|
# 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
|
||
|
|
rv = ':'.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
|
||
|
|
rv = ':' + ':'.join(components)
|
||
|
|
# and finally unquote slashes and other funny characters
|
||
|
|
return urllib.unquote(rv)
|
||
|
|
|
||
|
|
def pathname2url(pathname):
|
||
|
|
"""OS-specific conversion from a file system path to a relative URL
|
||
|
|
of the 'file' scheme; not recommended for general use."""
|
||
|
|
if '/' in pathname:
|
||
|
|
raise RuntimeError, "Cannot convert pathname containing slashes"
|
||
|
|
components = pathname.split(':')
|
||
|
|
# Remove empty first and/or last component
|
||
|
|
if components[0] == '':
|
||
|
|
del components[0]
|
||
|
|
if components[-1] == '':
|
||
|
|
del components[-1]
|
||
|
|
# Replace empty string ('::') by .. (will result in '/../' later)
|
||
|
|
for i in range(len(components)):
|
||
|
|
if components[i] == '':
|
||
|
|
components[i] = '..'
|
||
|
|
# Truncate names longer than 31 bytes
|
||
|
|
components = map(_pncomp2url, components)
|
||
|
|
|
||
|
|
if os.path.isabs(pathname):
|
||
|
|
return '/' + '/'.join(components)
|
||
|
|
else:
|
||
|
|
return '/'.join(components)
|
||
|
|
|
||
|
|
def _pncomp2url(component):
|
||
|
|
component = urllib.quote(component[:31], safe='') # We want to quote slashes
|
||
|
|
return component
|
||
|
|
|
||
|
|
def test():
|
||
|
|
for url in ["index.html",
|
||
|
|
"bar/index.html",
|
||
|
|
"/foo/bar/index.html",
|
||
|
|
"/foo/bar/",
|
||
|
|
"/"]:
|
||
|
|
print '%r -> %r' % (url, url2pathname(url))
|
||
|
|
for path in ["drive:",
|
||
|
|
"drive:dir:",
|
||
|
|
"drive:dir:file",
|
||
|
|
"drive:file",
|
||
|
|
"file",
|
||
|
|
":file",
|
||
|
|
":dir:",
|
||
|
|
":dir:file"]:
|
||
|
|
print '%r -> %r' % (path, pathname2url(path))
|
||
|
|
|
||
|
|
if __name__ == '__main__':
|
||
|
|
test()
|