mercurial/hgweb/common.py
author Vadim Gelfer <vadim.gelfer@gmail.com>
Fri, 14 Jul 2006 11:17:22 -0700
changeset 2612 ffb895f16925
parent 2514 419c42223bee
child 2858 345bac2bc4ec
permissions -rw-r--r--
add support for streaming clone. existing clone code uses pull to get changes from remote repo. is very slow, uses lots of memory and cpu. new clone code has server write file data straight to client, client writes file data straight to disk. memory and cpu used are very low, clone is much faster over lan. new client can still clone with pull, can still clone from older servers. new server can still serve older clients.

# 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 Matt Mackall <mpm@selenic.com>
#
# This software may be used and distributed according to the terms
# of the GNU General Public License, incorporated herein by reference.

import os, mimetypes
import os.path

def get_mtime(repo_path):
    hg_path = os.path.join(repo_path, ".hg")
    cl_path = os.path.join(hg_path, "00changelog.i")
    if os.path.exists(os.path.join(cl_path)):
        return os.stat(cl_path).st_mtime
    else:
        return os.stat(hg_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('/')
    path = directory
    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 ""
        path = os.path.join(path, part)
    try:
        os.stat(path)
        ct = mimetypes.guess_type(path)[0] or "text/plain"
        req.header([('Content-type', ct),
                    ('Content-length', os.path.getsize(path))])
        return file(path).read()
    except (TypeError, OSError):
        # illegal fname or unreadable file
        return ""