view mercurial/hgweb/hgwebdir_mod.py @ 6302:8e3dc3de7e73

Use the pager given by the environment to display long output

Unix systems usually have a PAGER environment variable set.
If it is set, mercurial will use the pager application to display
output.

Two configuration variables are available to influence the behaviour of the
pager. ui.pager sets the pager application. The pager is
only used if ui.usepager is true. By default ui.usepager is disabled.

# 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.

import os
from mercurial.i18n import gettext as _
from mercurial.repo import RepoError
from mercurial import ui, hg, util, templater, templatefilters
from common import ErrorResponse, get_mtime, staticfile, style_map, paritygen,\
                   get_contact, HTTP_OK, HTTP_NOT_FOUND, HTTP_SERVER_ERROR
from hgweb_mod import hgweb
from request import wsgirequest

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

        self.parentui = parentui or ui.ui(report_untrusted=False,
                                          interactive = False)
        self.motd = None
        self.style = None
        self.stripecount = None
        self.repos_sorted = ('name', False)
        self._baseurl = None
        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_option('web', 'baseurl'):
                    self._baseurl = cp.get('web', 'baseurl')
            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, followsym=True):
                        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
        wsgicgi.launch(self)

    def __call__(self, env, respond):
        req = wsgirequest(env, respond)
        self.run_wsgi(req)
        return req

    def run_wsgi(self, req):

        try:
            try:

                virtual = req.env.get("PATH_INFO", "").strip('/')
                tmpl = self.templater(req)
                ctype = tmpl('mimetype', encoding=util._encoding)
                ctype = templater.stringify(ctype)

                # a static file
                if virtual.startswith('static/') or 'static' in req.form:
                    static = os.path.join(templater.templatepath(), 'static')
                    if virtual.startswith('static/'):
                        fname = virtual[7:]
                    else:
                        fname = req.form['static'][0]
                    req.write(staticfile(static, fname, req))
                    return

                # top-level index
                elif not virtual:
                    req.respond(HTTP_OK, ctype)
                    req.write(self.makeindex(req, tmpl))
                    return

                # nested indexes and hgwebs

                repos = dict(self.repos)
                while virtual:
                    real = repos.get(virtual)
                    if real:
                        req.env['REPO_NAME'] = virtual
                        try:
                            repo = hg.repository(self.parentui, real)
                            hgweb(repo).run_wsgi(req)
                            return
                        except IOError, inst:
                            msg = inst.strerror
                            raise ErrorResponse(HTTP_SERVER_ERROR, msg)
                        except RepoError, inst:
                            raise ErrorResponse(HTTP_SERVER_ERROR, str(inst))

                    # browse subdirectories
                    subdir = virtual + '/'
                    if [r for r in repos if r.startswith(subdir)]:
                        req.respond(HTTP_OK, ctype)
                        req.write(self.makeindex(req, tmpl, subdir))
                        return

                    up = virtual.rfind('/')
                    if up < 0:
                        break
                    virtual = virtual[:up]

                # prefixes not found
                req.respond(HTTP_NOT_FOUND, ctype)
                req.write(tmpl("notfound", repo=virtual))

            except ErrorResponse, err:
                req.respond(err.code, ctype)
                req.write(tmpl('error', error=err.message or ''))
        finally:
            tmpl = None

    def makeindex(self, req, tmpl, subdir=""):

        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, subdir="", **map):
            def sessionvars(**map):
                fields = []
                if 'style' in req.form:
                    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:
                if not name.startswith(subdir):
                    continue
                name = name[len(subdir):]

                u = ui.ui(parentui=self.parentui)
                try:
                    u.readconfig(os.path.join(path, '.hg', 'hgrc'))
                except Exception, e:
                    u.warn(_('error reading %s/.hg/hgrc: %s\n' % (path, e)))
                    continue
                def get(section, name, default=None):
                    return u.config(section, name, default, untrusted=True)

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

                parts = [req.env['PATH_INFO'].rstrip('/'), name]
                if req.env['SCRIPT_NAME']:
                    parts.insert(0, req.env['SCRIPT_NAME'])
                url = ('/'.join(parts).replace("//", "/")) + '/'

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

                contact = get_contact(get)
                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

        sortable = ["name", "description", "contact", "lastchange"]
        sortcolumn, descending = self.repos_sorted
        if 'sort' in req.form:
            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]

        if self._baseurl is not None:
            req.env['SCRIPT_NAME'] = self._baseurl

        return tmpl("index", entries=entries, subdir=subdir,
                    sortcolumn=sortcolumn, descending=descending,
                    **dict(sort))

    def templater(self, req):

        def header(**map):
            yield tmpl('header', encoding=util._encoding, **map)

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

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

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

        if self._baseurl is not None:
            req.env['SCRIPT_NAME'] = self._baseurl

        url = req.env.get('SCRIPT_NAME', '')
        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 'style' in req.form:
            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, templatefilters.filters,
                                   defaults={"header": header,
                                             "footer": footer,
                                             "motd": motd,
                                             "url": url,
                                             "staticurl": staticurl})
        return tmpl