view mercurial/hgweb/hgwebdir_mod.py @ 5331:8ee5b8129e7b

hgweb: don't raise an exception when displying empty repos

The nullid node claims it's in the default branch, but the branch dict
is empty.  This fixes the main symptom from issue696, but we may want
to set branchtags()['default'] = nullid somewhere for empty repos.

# hgweb/hgwebdir_mod.py - Web interface for a directory of repositories.
#
# 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.

from mercurial import demandimport; demandimport.enable()
import os, mimetools, cStringIO
from mercurial.i18n import gettext as _
from mercurial import ui, hg, util, templater
from common import get_mtime, staticfile, style_map, paritygen
from hgweb_mod import hgweb

# This is a stopgap
class hgwebdir(object):
    def __init__(self, config, parentui=None):
        def cleannames(items):
            return [(util.pconvert(name.strip(os.sep)), path)
                    for name, path in items]

        self.parentui = parentui
        self.motd = None
        self.style = None
        self.stripecount = None
        self.repos_sorted = ('name', False)
        if isinstance(config, (list, tuple)):
            self.repos = cleannames(config)
            self.repos_sorted = ('', False)
        elif isinstance(config, dict):
            self.repos = cleannames(config.items())
            self.repos.sort()
        else:
            if isinstance(config, util.configparser):
                cp = config
            else:
                cp = util.configparser()
                cp.read(config)
            self.repos = []
            if cp.has_section('web'):
                if cp.has_option('web', 'motd'):
                    self.motd = cp.get('web', 'motd')
                if cp.has_option('web', 'style'):
                    self.style = cp.get('web', 'style')
                if cp.has_option('web', 'stripes'):
                    self.stripecount = int(cp.get('web', 'stripes'))
            if cp.has_section('paths'):
                self.repos.extend(cleannames(cp.items('paths')))
            if cp.has_section('collections'):
                for prefix, root in cp.items('collections'):
                    for path in util.walkrepos(root):
                        repo = os.path.normpath(path)
                        name = repo
                        if name.startswith(prefix):
                            name = name[len(prefix):]
                        self.repos.append((name.lstrip(os.sep), repo))
            self.repos.sort()

    def run(self):
        if not os.environ.get('GATEWAY_INTERFACE', '').startswith("CGI/1."):
            raise RuntimeError("This function is only intended to be called while running as a CGI script.")
        import mercurial.hgweb.wsgicgi as wsgicgi
        from request import wsgiapplication
        def make_web_app():
            return self
        wsgicgi.launch(wsgiapplication(make_web_app))

    def run_wsgi(self, req):
        def header(**map):
            header_file = cStringIO.StringIO(
                ''.join(tmpl("header", encoding=util._encoding, **map)))
            msg = mimetools.Message(header_file, 0)
            req.header(msg.items())
            yield header_file.read()

        def footer(**map):
            yield tmpl("footer", **map)

        def motd(**map):
            if self.motd is not None:
                yield self.motd
            else:
                yield config('web', 'motd', '')

        parentui = self.parentui or ui.ui(report_untrusted=False,
                                          interactive=False)

        def config(section, name, default=None, untrusted=True):
            return parentui.config(section, name, default, untrusted)

        url = req.env['REQUEST_URI'].split('?')[0]
        if not url.endswith('/'):
            url += '/'

        staticurl = config('web', 'staticurl') or url + 'static/'
        if not staticurl.endswith('/'):
            staticurl += '/'

        style = self.style
        if style is None:
            style = config('web', 'style', '')
        if req.form.has_key('style'):
            style = req.form['style'][0]
        if self.stripecount is None:
            self.stripecount = int(config('web', 'stripes', 1))
        mapfile = style_map(templater.templatepath(), style)
        tmpl = templater.templater(mapfile, templater.common_filters,
                                   defaults={"header": header,
                                             "footer": footer,
                                             "motd": motd,
                                             "url": url,
                                             "staticurl": staticurl})

        def archivelist(ui, nodeid, url):
            allowed = ui.configlist("web", "allow_archive", untrusted=True)
            for i in [('zip', '.zip'), ('gz', '.tar.gz'), ('bz2', '.tar.bz2')]:
                if i[0] in allowed or ui.configbool("web", "allow" + i[0],
                                                    untrusted=True):
                    yield {"type" : i[0], "extension": i[1],
                           "node": nodeid, "url": url}

        def entries(sortcolumn="", descending=False, **map):
            def sessionvars(**map):
                fields = []
                if req.form.has_key('style'):
                    style = req.form['style'][0]
                    if style != get('web', 'style', ''):
                        fields.append(('style', style))

                separator = url[-1] == '?' and ';' or '?'
                for name, value in fields:
                    yield dict(name=name, value=value, separator=separator)
                    separator = ';'

            rows = []
            parity = paritygen(self.stripecount)
            for name, path in self.repos:
                u = ui.ui(parentui=parentui)
                try:
                    u.readconfig(os.path.join(path, '.hg', 'hgrc'))
                except IOError:
                    pass
                def get(section, name, default=None):
                    return u.config(section, name, default, untrusted=True)

                if u.configbool("web", "hidden", untrusted=True):
                    continue

                url = ('/'.join([req.env["REQUEST_URI"].split('?')[0], name])
                       .replace("//", "/")) + '/'

                # update time with local timezone
                try:
                    d = (get_mtime(path), util.makedate()[1])
                except OSError:
                    continue

                contact = (get("ui", "username") or # preferred
                           get("web", "contact") or # deprecated
                           get("web", "author", "")) # also
                description = get("web", "description", "")
                name = get("web", "name", name)
                row = dict(contact=contact or "unknown",
                           contact_sort=contact.upper() or "unknown",
                           name=name,
                           name_sort=name,
                           url=url,
                           description=description or "unknown",
                           description_sort=description.upper() or "unknown",
                           lastchange=d,
                           lastchange_sort=d[1]-d[0],
                           sessionvars=sessionvars,
                           archives=archivelist(u, "tip", url))
                if (not sortcolumn
                    or (sortcolumn, descending) == self.repos_sorted):
                    # fast path for unsorted output
                    row['parity'] = parity.next()
                    yield row
                else:
                    rows.append((row["%s_sort" % sortcolumn], row))
            if rows:
                rows.sort()
                if descending:
                    rows.reverse()
                for key, row in rows:
                    row['parity'] = parity.next()
                    yield row

        try:
            virtual = req.env.get("PATH_INFO", "").strip('/')
            if virtual.startswith('static/'):
                static = os.path.join(templater.templatepath(), 'static')
                fname = virtual[7:]
                req.write(staticfile(static, fname, req) or
                          tmpl('error', error='%r not found' % fname))
            elif virtual:
                while virtual:
                    real = dict(self.repos).get(virtual)
                    if real:
                        break
                    up = virtual.rfind('/')
                    if up < 0:
                        break
                    virtual = virtual[:up]
                if real:
                    req.env['REPO_NAME'] = virtual
                    try:
                        repo = hg.repository(parentui, real)
                        hgweb(repo).run_wsgi(req)
                    except IOError, inst:
                        req.write(tmpl("error", error=inst.strerror))
                    except hg.RepoError, inst:
                        req.write(tmpl("error", error=str(inst)))
                else:
                    req.write(tmpl("notfound", repo=virtual))
            else:
                if req.form.has_key('static'):
                    static = os.path.join(templater.templatepath(), "static")
                    fname = req.form['static'][0]
                    req.write(staticfile(static, fname, req)
                              or tmpl("error", error="%r not found" % fname))
                else:
                    sortable = ["name", "description", "contact", "lastchange"]
                    sortcolumn, descending = self.repos_sorted
                    if req.form.has_key('sort'):
                        sortcolumn = req.form['sort'][0]
                        descending = sortcolumn.startswith('-')
                        if descending:
                            sortcolumn = sortcolumn[1:]
                        if sortcolumn not in sortable:
                            sortcolumn = ""

                    sort = [("sort_%s" % column,
                             "%s%s" % ((not descending and column == sortcolumn)
                                       and "-" or "", column))
                            for column in sortable]
                    req.write(tmpl("index", entries=entries,
                                   sortcolumn=sortcolumn, descending=descending,
                                   **dict(sort)))
        finally:
            tmpl = None