mirror of
https://github.com/python/cpython.git
synced 2025-11-03 23:21:29 +00:00
71 lines
2.4 KiB
Python
71 lines
2.4 KiB
Python
"""riscos specific module for conversion between pathnames and URLs.
|
|
Based on macurl2path.
|
|
Do not import directly, use urllib instead."""
|
|
|
|
import string
|
|
import urllib
|
|
import os
|
|
|
|
__all__ = ["url2pathname","pathname2url"]
|
|
|
|
__slash_dot = string.maketrans("/.", "./")
|
|
|
|
def url2pathname(url):
|
|
"""OS-specific conversion from a relative URL of the 'file' scheme
|
|
to a file system path; not recommended for general use."""
|
|
tp = urllib.splittype(url)[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 url[:3] == '///':
|
|
url = url[2:]
|
|
elif url[:2] == '//':
|
|
raise RuntimeError, 'Cannot convert non-local URL to pathname'
|
|
components = string.split(url, '/')
|
|
if not components[0]:
|
|
if '$' in components:
|
|
del components[0]
|
|
else:
|
|
components[0] = '$'
|
|
# 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 -= 1
|
|
elif components[i] == '..':
|
|
components[i] = '^'
|
|
i += 1
|
|
elif components[i] == '' and i > 0 and components[i-1] <> '':
|
|
del components[i]
|
|
else:
|
|
i += 1
|
|
components = map(lambda x: urllib.unquote(x).translate(__slash_dot), components)
|
|
return '.'.join(components)
|
|
|
|
def pathname2url(pathname):
|
|
"""OS-specific conversion from a file system path to a relative URL
|
|
of the 'file' scheme; not recommended for general use."""
|
|
return urllib.quote('///' + pathname.translate(__slash_dot), "/$:")
|
|
|
|
def test():
|
|
for url in ["index.html",
|
|
"/SCSI::SCSI4/$/Anwendung/Comm/Apps/!Fresco/Welcome",
|
|
"/SCSI::SCSI4/$/Anwendung/Comm/Apps/../!Fresco/Welcome",
|
|
"../index.html",
|
|
"bar/index.html",
|
|
"/foo/bar/index.html",
|
|
"/foo/bar/",
|
|
"/"]:
|
|
print '%r -> %r' % (url, url2pathname(url))
|
|
print "*******************************************************"
|
|
for path in ["SCSI::SCSI4.$.Anwendung",
|
|
"PythonApp:Lib",
|
|
"PythonApp:Lib.rourl2path/py"]:
|
|
print '%r -> %r' % (path, pathname2url(path))
|
|
|
|
if __name__ == '__main__':
|
|
test()
|