view mercurial/hgweb/common.py @ 4485:82bc6aef8b43

patchbomb: Don't prompt for headers until sure we have revs to export.

The prior behaviour was to always prompt for headers, and only then
bomb out if there were actually no revs to send.

# hgweb/common.py - Utility functions needed by hgweb_mod and hgwebdir_mod
#
# Copyright 21 May 2005 - (c) 2005 Jake Edge <[e-mail]>
# Copyright 2005, 2006 Matt Mackall <[e-mail]>
#
# This software may be used and distributed according to the terms
# of the GNU General Public License, incorporated herein by reference.

import os, mimetypes

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('/')
    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', str(os.path.getsize(path)))])
        return file(path, 'rb').read()
    except (TypeError, OSError):
        # illegal fname or unreadable file
        return ""

def style_map(templatepath, style):
    """Return path to mapfile for a given style.

    Searches mapfile in the following locations:
    1. templatepath/style/map
    2. templatepath/map-style
    3. templatepath/map
    """
    locations = style and [os.path.join(style, "map"), "map-"+style] or []
    locations.append("map")
    for location in locations:
        mapfile = os.path.join(templatepath, location)
        if os.path.isfile(mapfile):
            return mapfile
    raise RuntimeError("No hgweb templates found in %r" % templatepath)