mercurial/hgweb/common.py
author Alexis S. L. Carvalho <alexis@cecm.usp.br>
Thu, 23 Aug 2007 01:48:29 -0300
changeset 5210 90d9ec0dc69d
parent 4461 12e4d9524951
permissions -rw-r--r--
merge: forcefully mark files that we get from the second parent as dirty After a hg merge, we want to include in the commit all the files that we got from the second parent, so that we have the correct file-level history. To make them visible to hg commit, we try to mark them as dirty. Unfortunately, right now we can't really mark them as dirty[1] - the best we can do is to mark them as needing a full comparison of their contents, but they will still be considered clean if they happen to be identical to the version in the first parent. This changeset extends the dirstate format in a compatible way, so that we can mark a file as dirty: Right now we use a negative file size to indicate we don't have valid stat data for this entry. In practice, this size is always -1. This patch uses -2 to indicate that the entry is dirty. Older versions of hg won't choke on this dirstate, but they may happily mark the file as clean after a full comparison, destroying all of our hard work. The patch adds a dirstate.normallookup method with the semantics of the current normaldirty, and changes normaldirty to forcefully mark the entry as dirty. This should fix issue522. [1] - well, we could put them in state 'm', but that state has a different meaning.

# 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, 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)

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