ref: c22ebef4e1221a3fb276524a86bc3b25d2662653
dir: /sys/src/cmd/hg/mercurial/hgweb/common.py/
# hgweb/common.py - Utility functions needed by hgweb_mod and hgwebdir_mod
#
# 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 errno, mimetypes, os
HTTP_OK = 200
HTTP_BAD_REQUEST = 400
HTTP_UNAUTHORIZED = 401
HTTP_FORBIDDEN = 403
HTTP_NOT_FOUND = 404
HTTP_METHOD_NOT_ALLOWED = 405
HTTP_SERVER_ERROR = 500
class ErrorResponse(Exception):
def __init__(self, code, message=None, headers=[]):
Exception.__init__(self)
self.code = code
self.headers = headers
if message is not None:
self.message = message
else:
self.message = _statusmessage(code)
def _statusmessage(code):
from BaseHTTPServer import BaseHTTPRequestHandler
responses = BaseHTTPRequestHandler.responses
return responses.get(code, ('Error', 'Unknown error'))[0]
def statusmessage(code):
return '%d %s' % (code, _statusmessage(code))
def get_mtime(repo_path):
store_path = os.path.join(repo_path, ".hg")
if not os.path.isdir(os.path.join(store_path, "data")):
store_path = os.path.join(store_path, "store")
cl_path = os.path.join(store_path, "00changelog.i")
if os.path.exists(cl_path):
return os.stat(cl_path).st_mtime
else:
return os.stat(store_path).st_mtime
def staticfile(directory, fname, req):
"""return a file inside directory with guessed Content-Type header
fname always uses '/' as directory separator and isn't allowed to
contain unusual path components.
Content-Type is guessed using the mimetypes module.
Return an empty string if fname is illegal or file not found.
"""
parts = fname.split('/')
for part in parts:
if (part in ('', os.curdir, os.pardir) or
os.sep in part or os.altsep is not None and os.altsep in part):
return ""
fpath = os.path.join(*parts)
if isinstance(directory, str):
directory = [directory]
for d in directory:
path = os.path.join(d, fpath)
if os.path.exists(path):
break
try:
os.stat(path)
ct = mimetypes.guess_type(path)[0] or "text/plain"
req.respond(HTTP_OK, ct, length = os.path.getsize(path))
return open(path, 'rb').read()
except TypeError:
raise ErrorResponse(HTTP_SERVER_ERROR, 'illegal filename')
except OSError, err:
if err.errno == errno.ENOENT:
raise ErrorResponse(HTTP_NOT_FOUND)
else:
raise ErrorResponse(HTTP_SERVER_ERROR, err.strerror)
def paritygen(stripecount, offset=0):
"""count parity of horizontal stripes for easier reading"""
if stripecount and offset:
# account for offset, e.g. due to building the list in reverse
count = (stripecount + offset) % stripecount
parity = (stripecount + offset) / stripecount & 1
else:
count = 0
parity = 0
while True:
yield parity
count += 1
if stripecount and count >= stripecount:
parity = 1 - parity
count = 0
def get_contact(config):
"""Return repo contact information or empty string.
web.contact is the primary source, but if that is not set, try
ui.username or $EMAIL as a fallback to display something useful.
"""
return (config("web", "contact") or
config("ui", "username") or
os.environ.get("EMAIL") or "")