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Tests if hgweb can run without touching sys.stdin, as is required
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by the WSGI standard and strictly implemented by mod_wsgi.
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$ hg init repo
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$ cd repo
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$ echo foo > bar
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$ hg add bar
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$ hg commit -m "test"
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$ cat > request.py <<EOF
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> from mercurial import dispatch
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> from mercurial.hgweb.hgweb_mod import hgweb
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> from mercurial.ui import ui
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> from mercurial import hg
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> from StringIO import StringIO
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> import os, sys
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>
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> class FileLike(object):
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> def __init__(self, real):
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> self.real = real
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> def fileno(self):
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> print >> sys.__stdout__, 'FILENO'
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> return self.real.fileno()
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> def read(self):
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> print >> sys.__stdout__, 'READ'
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> return self.real.read()
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> def readline(self):
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> print >> sys.__stdout__, 'READLINE'
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> return self.real.readline()
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>
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> sys.stdin = FileLike(sys.stdin)
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> errors = StringIO()
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> input = StringIO()
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> output = StringIO()
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>
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> def startrsp(status, headers):
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> print '---- STATUS'
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> print status
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> print '---- HEADERS'
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> print [i for i in headers if i[0] != 'ETag']
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> print '---- DATA'
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> return output.write
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>
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> env = {
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> 'wsgi.version': (1, 0),
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> 'wsgi.url_scheme': 'http',
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> 'wsgi.errors': errors,
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> 'wsgi.input': input,
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> 'wsgi.multithread': False,
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> 'wsgi.multiprocess': False,
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> 'wsgi.run_once': False,
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> 'REQUEST_METHOD': 'GET',
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> 'SCRIPT_NAME': '',
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> 'PATH_INFO': '',
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> 'QUERY_STRING': '',
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> 'SERVER_NAME': '127.0.0.1',
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> 'SERVER_PORT': os.environ['HGPORT'],
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> 'SERVER_PROTOCOL': 'HTTP/1.0'
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> }
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>
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> i = hgweb('.')
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> for c in i(env, startrsp):
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> pass
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> print '---- ERRORS'
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> print errors.getvalue()
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> print '---- OS.ENVIRON wsgi variables'
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> print sorted([x for x in os.environ if x.startswith('wsgi')])
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> print '---- request.ENVIRON wsgi variables'
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> with i._obtainrepo() as repo:
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> print sorted([x for x in repo.ui.environ if x.startswith('wsgi')])
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> EOF
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$ python request.py
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---- STATUS
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200 Script output follows
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---- HEADERS
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[('Content-Type', 'text/html; charset=ascii')]
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---- DATA
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---- ERRORS
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---- OS.ENVIRON wsgi variables
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[]
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---- request.ENVIRON wsgi variables
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['wsgi.errors', 'wsgi.input', 'wsgi.multiprocess', 'wsgi.multithread', 'wsgi.run_once', 'wsgi.url_scheme', 'wsgi.version']
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$ cd ..
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