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-rw-r--r--lib/jython/Lib/urlparse.py261
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diff --git a/lib/jython/Lib/urlparse.py b/lib/jython/Lib/urlparse.py
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+"""Parse (absolute and relative) URLs.
+
+See RFC 1808: "Relative Uniform Resource Locators", by R. Fielding,
+UC Irvine, June 1995.
+"""
+
+__all__ = ["urlparse", "urlunparse", "urljoin"]
+
+# A classification of schemes ('' means apply by default)
+uses_relative = ['ftp', 'http', 'gopher', 'nntp', 'wais', 'file',
+ 'https', 'shttp',
+ 'prospero', 'rtsp', 'rtspu', '']
+uses_netloc = ['ftp', 'http', 'gopher', 'nntp', 'telnet', 'wais',
+ 'file',
+ 'https', 'shttp', 'snews',
+ 'prospero', 'rtsp', 'rtspu', '']
+non_hierarchical = ['gopher', 'hdl', 'mailto', 'news', 'telnet', 'wais',
+ 'snews', 'sip',
+ ]
+uses_params = ['ftp', 'hdl', 'prospero', 'http',
+ 'https', 'shttp', 'rtsp', 'rtspu', 'sip',
+ '']
+uses_query = ['http', 'wais',
+ 'https', 'shttp',
+ 'gopher', 'rtsp', 'rtspu', 'sip',
+ '']
+uses_fragment = ['ftp', 'hdl', 'http', 'gopher', 'news', 'nntp', 'wais',
+ 'https', 'shttp', 'snews',
+ 'file', 'prospero', '']
+
+# Characters valid in scheme names
+scheme_chars = ('abcdefghijklmnopqrstuvwxyz'
+ 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+ '0123456789'
+ '+-.')
+
+MAX_CACHE_SIZE = 20
+_parse_cache = {}
+
+def clear_cache():
+ """Clear the parse cache."""
+ global _parse_cache
+ _parse_cache = {}
+
+
+def urlparse(url, scheme = '', allow_fragments = 1):
+ """Parse a URL into 6 components:
+ <scheme>://<netloc>/<path>;<params>?<query>#<fragment>
+ Return a 6-tuple: (scheme, netloc, path, params, query, fragment).
+ Note that we don't break the components up in smaller bits
+ (e.g. netloc is a single string) and we don't expand % escapes."""
+ key = url, scheme, allow_fragments
+ cached = _parse_cache.get(key, None)
+ if cached:
+ return cached
+ if len(_parse_cache) >= MAX_CACHE_SIZE: # avoid runaway growth
+ clear_cache()
+ netloc = path = params = query = fragment = ''
+ i = url.find(':')
+ if i > 0:
+ if url[:i] == 'http': # optimize the common case
+ scheme = url[:i].lower()
+ url = url[i+1:]
+ if url[:2] == '//':
+ i = url.find('/', 2)
+ if i < 0:
+ i = len(url)
+ netloc = url[2:i]
+ url = url[i:]
+ if allow_fragments:
+ i = url.rfind('#')
+ if i >= 0:
+ fragment = url[i+1:]
+ url = url[:i]
+ i = url.find('?')
+ if i >= 0:
+ query = url[i+1:]
+ url = url[:i]
+ i = url.find(';')
+ if i >= 0:
+ params = url[i+1:]
+ url = url[:i]
+ tuple = scheme, netloc, url, params, query, fragment
+ _parse_cache[key] = tuple
+ return tuple
+ for c in url[:i]:
+ if c not in scheme_chars:
+ break
+ else:
+ scheme, url = url[:i].lower(), url[i+1:]
+ if scheme in uses_netloc:
+ if url[:2] == '//':
+ i = url.find('/', 2)
+ if i < 0:
+ i = len(url)
+ netloc, url = url[2:i], url[i:]
+ if allow_fragments and scheme in uses_fragment:
+ i = url.rfind('#')
+ if i >= 0:
+ url, fragment = url[:i], url[i+1:]
+ if scheme in uses_query:
+ i = url.find('?')
+ if i >= 0:
+ url, query = url[:i], url[i+1:]
+ if scheme in uses_params:
+ i = url.find(';')
+ if i >= 0:
+ url, params = url[:i], url[i+1:]
+ tuple = scheme, netloc, url, params, query, fragment
+ _parse_cache[key] = tuple
+ return tuple
+
+def urlunparse((scheme, netloc, url, params, query, fragment)):
+ """Put a parsed URL back together again. This may result in a
+ slightly different, but equivalent URL, if the URL that was parsed
+ originally had redundant delimiters, e.g. a ? with an empty query
+ (the draft states that these are equivalent)."""
+ if netloc or (scheme in uses_netloc and url[:2] == '//'):
+ if url and url[:1] != '/': url = '/' + url
+ url = '//' + (netloc or '') + url
+ if scheme:
+ url = scheme + ':' + url
+ if params:
+ url = url + ';' + params
+ if query:
+ url = url + '?' + query
+ if fragment:
+ url = url + '#' + fragment
+ return url
+
+def urljoin(base, url, allow_fragments = 1):
+ """Join a base URL and a possibly relative URL to form an absolute
+ interpretation of the latter."""
+ if not base:
+ return url
+ if not url:
+ return base
+ bscheme, bnetloc, bpath, bparams, bquery, bfragment = \
+ urlparse(base, '', allow_fragments)
+ scheme, netloc, path, params, query, fragment = \
+ urlparse(url, bscheme, allow_fragments)
+ if scheme != bscheme or scheme not in uses_relative:
+ return url
+ if scheme in uses_netloc:
+ if netloc:
+ return urlunparse((scheme, netloc, path,
+ params, query, fragment))
+ netloc = bnetloc
+ if path[:1] == '/':
+ return urlunparse((scheme, netloc, path,
+ params, query, fragment))
+ if not path:
+ if not params:
+ params = bparams
+ if not query:
+ query = bquery
+ return urlunparse((scheme, netloc, bpath,
+ params, query, fragment))
+ segments = bpath.split('/')[:-1] + path.split('/')
+ # XXX The stuff below is bogus in various ways...
+ if segments[-1] == '.':
+ segments[-1] = ''
+ while '.' in segments:
+ segments.remove('.')
+ while 1:
+ i = 1
+ n = len(segments) - 1
+ while i < n:
+ if (segments[i] == '..'
+ and segments[i-1] not in ('', '..')):
+ del segments[i-1:i+1]
+ break
+ i = i+1
+ else:
+ break
+ if segments == ['', '..']:
+ segments[-1] = ''
+ elif len(segments) >= 2 and segments[-1] == '..':
+ segments[-2:] = ['']
+ return urlunparse((scheme, netloc, '/'.join(segments),
+ params, query, fragment))
+
+def urldefrag(url):
+ """Removes any existing fragment from URL.
+
+ Returns a tuple of the defragmented URL and the fragment. If
+ the URL contained no fragments, the second element is the
+ empty string.
+ """
+ s, n, p, a, q, frag = urlparse(url)
+ defrag = urlunparse((s, n, p, a, q, ''))
+ return defrag, frag
+
+
+test_input = """
+ http://a/b/c/d
+
+ g:h = <URL:g:h>
+ http:g = <URL:http://a/b/c/g>
+ http: = <URL:http://a/b/c/d>
+ g = <URL:http://a/b/c/g>
+ ./g = <URL:http://a/b/c/g>
+ g/ = <URL:http://a/b/c/g/>
+ /g = <URL:http://a/g>
+ //g = <URL:http://g>
+ ?y = <URL:http://a/b/c/d?y>
+ g?y = <URL:http://a/b/c/g?y>
+ g?y/./x = <URL:http://a/b/c/g?y/./x>
+ . = <URL:http://a/b/c/>
+ ./ = <URL:http://a/b/c/>
+ .. = <URL:http://a/b/>
+ ../ = <URL:http://a/b/>
+ ../g = <URL:http://a/b/g>
+ ../.. = <URL:http://a/>
+ ../../g = <URL:http://a/g>
+ ../../../g = <URL:http://a/../g>
+ ./../g = <URL:http://a/b/g>
+ ./g/. = <URL:http://a/b/c/g/>
+ /./g = <URL:http://a/./g>
+ g/./h = <URL:http://a/b/c/g/h>
+ g/../h = <URL:http://a/b/c/h>
+ http:g = <URL:http://a/b/c/g>
+ http: = <URL:http://a/b/c/d>
+ http:?y = <URL:http://a/b/c/d?y>
+ http:g?y = <URL:http://a/b/c/g?y>
+ http:g?y/./x = <URL:http://a/b/c/g?y/./x>
+"""
+# XXX The result for //g is actually http://g/; is this a problem?
+
+def test():
+ import sys
+ base = ''
+ if sys.argv[1:]:
+ fn = sys.argv[1]
+ if fn == '-':
+ fp = sys.stdin
+ else:
+ fp = open(fn)
+ else:
+ import StringIO
+ fp = StringIO.StringIO(test_input)
+ while 1:
+ line = fp.readline()
+ if not line: break
+ words = line.split()
+ if not words:
+ continue
+ url = words[0]
+ parts = urlparse(url)
+ print '%-10s : %s' % (url, parts)
+ abs = urljoin(base, url)
+ if not base:
+ base = abs
+ wrapped = '<URL:%s>' % abs
+ print '%-10s = %s' % (url, wrapped)
+ if len(words) == 3 and words[1] == '=':
+ if wrapped != words[2]:
+ print 'EXPECTED', words[2], '!!!!!!!!!!'
+
+if __name__ == '__main__':
+ test()
generated by cgit v1.2.3 (git 2.39.1) at 2025-02-06 14:43:33 +0000