"""Macintosh-specific module for conversion between pathnames and URLs. Do not import directly; use urllib instead.""" import urllib.parse 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.parse.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.parse.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): # We want to quote slashes return urllib.parse.quote(component[:31], safe='') SIMPAN PERUBAHAN