cpython/Lib/plat-riscos/rourl2path.py

83 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
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:
if components[i]<>'..' and string.find(components[i], '.')<>-1 :
components[i] = string.join(string.split(components[i],'.'),'/')
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",
"/SCSI::SCSI4/$/Anwendung/Comm/Apps/!Fresco/Welcome",
"../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()