add hg and python

sys/lib/python/mercurial/hgweb/request.py

@@ -0,0 +1,134 @@
+# hgweb/request.py - An http request from either CGI or the standalone server.
+#
+# Copyright 21 May 2005 - (c) 2005 Jake Edge <jake@edge2.net>
+# Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>
+#
+# This software may be used and distributed according to the terms of the
+# GNU General Public License version 2, incorporated herein by reference.
+
+import socket, cgi, errno
+from mercurial import util
+from common import ErrorResponse, statusmessage
+
+shortcuts = {
+    'cl': [('cmd', ['changelog']), ('rev', None)],
+    'sl': [('cmd', ['shortlog']), ('rev', None)],
+    'cs': [('cmd', ['changeset']), ('node', None)],
+    'f': [('cmd', ['file']), ('filenode', None)],
+    'fl': [('cmd', ['filelog']), ('filenode', None)],
+    'fd': [('cmd', ['filediff']), ('node', None)],
+    'fa': [('cmd', ['annotate']), ('filenode', None)],
+    'mf': [('cmd', ['manifest']), ('manifest', None)],
+    'ca': [('cmd', ['archive']), ('node', None)],
+    'tags': [('cmd', ['tags'])],
+    'tip': [('cmd', ['changeset']), ('node', ['tip'])],
+    'static': [('cmd', ['static']), ('file', None)]
+}
+
+def expand(form):
+    for k in shortcuts.iterkeys():
+        if k in form:
+            for name, value in shortcuts[k]:
+                if value is None:
+                    value = form[k]
+                form[name] = value
+            del form[k]
+    return form
+
+class wsgirequest(object):
+    def __init__(self, wsgienv, start_response):
+        version = wsgienv['wsgi.version']
+        if (version < (1, 0)) or (version >= (2, 0)):
+            raise RuntimeError("Unknown and unsupported WSGI version %d.%d"
+                               % version)
+        self.inp = wsgienv['wsgi.input']
+        self.err = wsgienv['wsgi.errors']
+        self.threaded = wsgienv['wsgi.multithread']
+        self.multiprocess = wsgienv['wsgi.multiprocess']
+        self.run_once = wsgienv['wsgi.run_once']
+        self.env = wsgienv
+        self.form = expand(cgi.parse(self.inp, self.env, keep_blank_values=1))
+        self._start_response = start_response
+        self.server_write = None
+        self.headers = []
+
+    def __iter__(self):
+        return iter([])
+
+    def read(self, count=-1):
+        return self.inp.read(count)
+
+    def drain(self):
+        '''need to read all data from request, httplib is half-duplex'''
+        length = int(self.env.get('CONTENT_LENGTH', 0))
+        for s in util.filechunkiter(self.inp, limit=length):
+            pass
+
+    def respond(self, status, type=None, filename=None, length=0):
+        if self._start_response is not None:
+
+            self.httphdr(type, filename, length)
+            if not self.headers:
+                raise RuntimeError("request.write called before headers sent")
+
+            for k, v in self.headers:
+                if not isinstance(v, str):
+                    raise TypeError('header value must be string: %r' % v)
+
+            if isinstance(status, ErrorResponse):
+                self.header(status.headers)
+                status = statusmessage(status.code)
+            elif status == 200:
+                status = '200 Script output follows'
+            elif isinstance(status, int):
+                status = statusmessage(status)
+
+            self.server_write = self._start_response(status, self.headers)
+            self._start_response = None
+            self.headers = []
+
+    def write(self, thing):
+        if hasattr(thing, "__iter__"):
+            for part in thing:
+                self.write(part)
+        else:
+            thing = str(thing)
+            try:
+                self.server_write(thing)
+            except socket.error, inst:
+                if inst[0] != errno.ECONNRESET:
+                    raise
+
+    def writelines(self, lines):
+        for line in lines:
+            self.write(line)
+
+    def flush(self):
+        return None
+
+    def close(self):
+        return None
+
+    def header(self, headers=[('Content-Type','text/html')]):
+        self.headers.extend(headers)
+
+    def httphdr(self, type=None, filename=None, length=0, headers={}):
+        headers = headers.items()
+        if type is not None:
+            headers.append(('Content-Type', type))
+        if filename:
+            filename = (filename.split('/')[-1]
+                        .replace('\\', '\\\\').replace('"', '\\"'))
+            headers.append(('Content-Disposition',
+                            'inline; filename="%s"' % filename))
+        if length:
+            headers.append(('Content-Length', str(length)))
+        self.header(headers)
+
+def wsgiapplication(app_maker):
+    '''For compatibility with old CGI scripts. A plain hgweb() or hgwebdir()
+    can and should now be used as a WSGI application.'''
+    application = app_maker()
+    def run_wsgi(env, respond):
+        return application(env, respond)
+    return run_wsgi