diff options
| author | kientzle <kientzle@5914aa95-5b3a-0410-a3b5-7b719e7fe9b2> | 2008-03-18 18:24:32 +0000 |
|---|---|---|
| committer | kientzle <kientzle@5914aa95-5b3a-0410-a3b5-7b719e7fe9b2> | 2008-03-18 18:24:32 +0000 |
| commit | a9aa9e93ab46f067bfe912aae3612a17f2743720 (patch) | |
| tree | bed621f2d5dda9eace6fede1b083a3c09ad8e980 /freebase/uritemplate.py | |
| parent | 1abc18880a041188e8259bc637c437a4d3780526 (diff) | |
Move the "freebase.api" module into a "freebase-api" directory so that
we can provide a couple of different parallel implementations.
git-svn-id: http://freebase-python.googlecode.com/svn/trunk@34 5914aa95-5b3a-0410-a3b5-7b719e7fe9b2
Diffstat (limited to 'freebase/uritemplate.py')
| -rwxr-xr-x | freebase/uritemplate.py | 143 |
1 files changed, 0 insertions, 143 deletions
diff --git a/freebase/uritemplate.py b/freebase/uritemplate.py deleted file mode 100755 index 0a81147..0000000 --- a/freebase/uritemplate.py +++ /dev/null @@ -1,143 +0,0 @@ -# ======================================================================== -# Copyright (c) 2007, Metaweb Technologies, Inc. -# All rights reserved. -# -# Redistribution and use in source and binary forms, with or without -# modification, are permitted provided that the following conditions -# are met: -# * Redistributions of source code must retain the above copyright -# notice, this list of conditions and the following disclaimer. -# * Redistributions in binary form must reproduce the above -# copyright notice, this list of conditions and the following -# disclaimer in the documentation and/or other materials provided -# with the distribution. -# -# THIS SOFTWARE IS PROVIDED BY METAWEB TECHNOLOGIES AND CONTRIBUTORS -# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS -# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL METAWEB -# TECHNOLOGIES OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, -# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, -# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; -# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER -# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT -# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN -# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE -# POSSIBILITY OF SUCH DAMAGE. -# ======================================================================== - -# -# URI Templating in Python -# -# see http://bitworking.org/projects/URI-Templates/ -# and http://bitworking.org/news/URI_Templates -# -# note that this implementation may go away soon in -# favor of joe gregorio's own code: -# http://code.google.com/p/uri-templates/ -# -# -# this implementation can also parse URIs, as long as the -# template is sufficiently specific. to allow this to work -# the '/' character is forbidden in keys when parsing. -# later it should be possible to loosen this restriction. -# -# -# example: -# from whatever.uritemplate import expand_uri_template -# expand_uri_template('http://{host}/{file}', -# dict(host='example.org', -# file='fred')) -# -# TODO: -# allow parsing to be aware of http://www. and trailing / -# nail down quoting issues -# - -import os, sys, re -import urllib - -__all__ = ['expand_uri_template', 'URITemplate'] - - -def expand_uri_template(template, args): - """Expand a URI template using the given args dictionary. - """ - return URITemplate(template).run(args) - -def _uri_encode_var(v): - return urllib.quote(v, safe="-_.~!$&'()*+,;=:/?[]#@") - - -class URITemplate(object): - """a URITemplate is a URI with simple variable substitution. - """ - - VARREF = re.compile(r'\{([0-9a-zA-Z_]+)\}') - - def __init__(self, s): - """Compile a URITemplate from a string. - """ - self.template = s; - - self.params = [] - tsplit = self.VARREF.split(s) - rxs = ['^'] - for i in range(len(tsplit)): - if i % 2: - # track the vars used - self.params.append(tsplit[i]) - # vars match any string - # vars are assumed to lack '/' - this is imperfect... - rxs.append('([^/]*)') - else: - # quote special chars regexp interpretation - rxs.append(re.escape(tsplit[i])) - rxs.append('$') - self._parser = re.compile(''.join(rxs)) - - def __repr__(self): - return '<URITemplate %r>' % self.template - - def run (self, args): - """Expand the template using the given args. - """ - def repl(m): - key = m.group(1) - return _uri_encode_var(args.get(key, '')) - uri = self.VARREF.sub(repl,self.template) - - #if self.parse(uri) is None: - # print 're-parsing generated uri failed: %r, %r' % (uri, self.template) - return uri - - - def parse(self, uri): - """Try to parse a URI, extracting variable values. - """ - m = self._parser.match(uri) - if m is None: - return None - return dict(zip(self.params, m.groups())) - - -if __name__ == '__main__': - # - # testcases are imported from the URI::Template module on CPAN - # - import urllib2, simplejson - fp = urllib2.urlopen('http://search.cpan.org/src/BRICAS/URI-Template-0.09/t/data/spec.json') - testsuite = simplejson.loads(fp.read()) - vars = dict([(k.encode('utf-8'),v) for k,v in testsuite['variables'].items()]) - nsucceed = 0 - nfail = 0 - for test in testsuite['tests']: - ut = URITemplate(test['template']) - uri = ut.run(vars) - if uri != test['expected']: - print 'FAILED %r expected %r' % (uri, test['expected']) - print ' vars: %r' % (vars,) - nfail += 1 - else: - nsucceed += 1 - print 'tests: %d succeeded, %d failed' % (nsucceed, nfail) |
