83 lines
2.7 KiB
Python
83 lines
2.7 KiB
Python
"""riscos specific module for conversion between pathnames and URLs.
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Based on macurl2path.
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Do not import directly, use urllib instead."""
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import string
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import urllib
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import os
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def url2pathname(pathname):
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"Convert /-delimited pathname to mac pathname"
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#
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# XXXX The .. handling should be fixed...
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#
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tp = urllib.splittype(pathname)[0]
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if tp and tp <> 'file':
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raise RuntimeError, 'Cannot convert non-local URL to pathname'
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components = string.split(pathname, '/')
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# Remove . and embedded ..
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i = 0
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while i < len(components):
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if components[i] == '.':
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del components[i]
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elif components[i] == '..' and i > 0 and \
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components[i-1] not in ('', '..'):
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del components[i-1:i+1]
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i = i-1
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elif components[i] == '' and i > 0 and components[i-1] <> '':
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del components[i]
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else:
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if components[i]<>'..' and string.find(components[i], '.')<>-1 :
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components[i] = string.join(string.split(components[i],'.'),'/')
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i = i+1
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if not components[0]:
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# Absolute unix path, don't start with colon
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return string.join(components[1:], '.')
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else:
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# relative unix path, start with colon. First replace
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# leading .. by empty strings (giving ::file)
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i = 0
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while i < len(components) and components[i] == '..':
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components[i] = '^'
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i = i + 1
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return string.join(components, '.')
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def pathname2url(pathname):
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"convert mac pathname to /-delimited pathname"
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if '/' in pathname:
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raise RuntimeError, "Cannot convert pathname containing slashes"
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components = string.split(pathname, ':')
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# Replace empty string ('::') by .. (will result in '/../' later)
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for i in range(1, len(components)):
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if components[i] == '':
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components[i] = '..'
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# Truncate names longer than 31 bytes
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components = map(lambda x: x[:31], components)
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if os.path.isabs(pathname):
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return '/' + string.join(components, '/')
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else:
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return string.join(components, '/')
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def test():
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for url in ["index.html",
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"/SCSI::SCSI4/$/Anwendung/Comm/Apps/!Fresco/Welcome",
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"../index.html",
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"bar/index.html",
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"/foo/bar/index.html",
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"/foo/bar/",
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"/"]:
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print `url`, '->', `url2pathname(url)`
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for path in ["drive:",
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"drive:dir:",
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"drive:dir:file",
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"drive:file",
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"file",
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":file",
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":dir:",
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":dir:file"]:
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print `path`, '->', `pathname2url(path)`
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if __name__ == '__main__':
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test()
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