我目前正在尝试开发您的 TracMasterTicket 插件，以便它可以在 Python3 和 Trac 1.6 下运行。我希望我能就此问你一个简短的问题。在 web_ui.py 中，使用了 Trac 1.6 中不再存在的 ITemplateStreamFilter。我找到了一些通用的 Infos 如何替换 ITemplateStreamFilter 但这并没有真正帮助我很多。您能否提供一些简短的建议，如何在该特定项目中替换 ITemplateStreamFilter？
如果我只是删除 ITemplateSTreamFilter 并且它的实现 ist 不再工作（令人惊讶）
import functools
import graphviz
import os
import re
import subprocess
import textwrap
from trac.config import BoolOption, ChoiceOption, ListOption, Option
from trac.core import Component, TracError, implements
from trac.mimeview import Mimeview
from trac.resource import ResourceNotFound, get_resource_summary
from trac.ticket.model import Ticket
from trac.ticket.query import Query
from trac.util import as_int, to_unicode
from trac.util.html import html, escape
from trac.util.presentation import classes
from trac.util.translation import _, tag_
from trac.web.api import IRequestFilter, IRequestHandler, ITemplateStreamFilter
from trac.web.chrome import ITemplateProvider, add_ctxtnav, add_script
from model import TicketLinks
class MasterTicketsModule(Component):
"""Provides support for ticket dependencies."""
implements(IRequestFilter, IRequestHandler, ITemplateProvider, ITemplateStreamFilter)
dot_path = Option('mastertickets', 'dot_path', default='dot',
doc="Path to the dot executable.")
gs_path = Option('mastertickets', 'gs_path', default='gs',
doc="Path to the ghostscript executable.")
use_gs = BoolOption('mastertickets', 'use_gs', default=False,
doc="If enabled, use ghostscript to produce nicer output.")
acceptable_formats = ListOption('mastertickets', 'acceptable_formats',
default='svg,png,cmapx', sep=',',
doc="""The formats that may be chosen. Execute dot -T? for a
list of options. The first format in the list will be used
by default. If the list is empty, the png format will be used.
""")
closed_color = Option('mastertickets', 'closed_color', default='green',
doc="Color of closed tickets")
opened_color = Option('mastertickets', 'opened_color', default='red',
doc="Color of opened tickets")
show_key = BoolOption('mastertickets', 'show_key', default=False,
doc="Show a key for open/closed nodes")
closed_text = Option('mastertickets', 'closed_text', default='Done',
doc="Text for key showing closed tickets")
opened_text = Option('mastertickets', 'opened_text', default='ToDo',
doc="Text for key showing opened tickets")
highlight_target = BoolOption('mastertickets', 'highlight_target',
default=False,
doc="Highlight target tickets in graph")
full_graph = BoolOption('mastertickets', 'full_graph', default=False,
doc="Show full dep. graph, not just direct blocking links")
graph_direction = ChoiceOption('mastertickets', 'graph_direction',
choices=['TD', 'LR', 'DT', 'RL'],
doc="""Direction of the dependency graph (TD = Top Down,
DT = Down Top, LR = Left Right, RL = Right Left).""")
fields = set(['blocking', 'blockedby'])
# IRequestFilter methods
def pre_process_request(self, req, handler):
return handler
def post_process_request(self, req, template, data, content_type):
if template is not None:
if req.path_info.startswith('/ticket/'):
# In case of an invalid ticket, the data is invalid
if not data:
return template, data, content_type
tkt = data['ticket']
links = TicketLinks(self.env, tkt)
for i in links.blocked_by:
if Ticket(self.env, i)['status'] != 'closed':
add_script(req, 'mastertickets/js/disable_resolve.js')
break
# Add link to depgraph if needed.
if links:
add_ctxtnav(req, 'Depgraph',
req.href.depgraph('ticket', tkt.id))
for change in data.get('changes', {}):
if 'fields' not in change:
continue
for field, field_data in change['fields'].iteritems():
if field in self.fields:
if field_data['new'].strip():
new = to_int_set(field_data['new'])
else:
new = set()
if field_data['old'].strip():
old = to_int_set(field_data['old'])
else:
old = set()
add = new - old
sub = old - new
elms = html()
if add:
elms.append(
html.em(u', '.join(to_unicode(n)
for n in sorted(add)))
)
elms.append(u' added')
if add and sub:
elms.append(u'; ')
if sub:
elms.append(
html.em(u', '.join(to_unicode(n)
for n in sorted(sub)))
)
elms.append(u' removed')
field_data['rendered'] = elms
# Add a link to generate a dependency graph for all the tickets
# in the milestone
if req.path_info.startswith('/milestone/'):
if not data:
return template, data, content_type
milestone = data['milestone']
add_ctxtnav(req, 'Depgraph',
req.href.depgraph('milestone', milestone.name))
return template, data, content_type
# ITemplateStreamFilter methods
def filter_stream(self, req, method, filename, stream, data):
if not data:
return stream
# Try all at the same time to catch changed or processed templates.
if filename in ['report_view.html', 'query_results.html',
'ticket.html', 'query.html']:
# For ticket.html
if 'fields' in data and isinstance(data['fields'], list):
for field in data['fields']:
for f in self.fields:
if field['name'] == f and data['ticket'][f]:
field['rendered'] = \
self._link_tickets(req, data['ticket'][f])
# For query_results.html and query.html
if 'groups' in data and isinstance(data['groups'], list):
for group, tickets in data['groups']:
for ticket in tickets:
for f in self.fields:
if f in ticket:
ticket[f] = self._link_tickets(req, ticket[f])
# For report_view.html
if 'row_groups' in data and isinstance(data['row_groups'], list):
for group, rows in data['row_groups']:
for row in rows:
if 'cell_groups' in row and \
isinstance(row['cell_groups'], list):
for cells in row['cell_groups']:
for cell in cells:
# If the user names column in the report
# differently (blockedby AS "blocked by")
# then this will not find it
if cell.get('header', {}).get('col') \
in self.fields:
cell['value'] = \
self._link_tickets(req,
cell['value'])
return stream
# ITemplateProvider methods
def get_htdocs_dirs(self):
from pkg_resources import resource_filename
return [('mastertickets', resource_filename(__name__, 'htdocs'))]
def get_templates_dirs(self):
from pkg_resources import resource_filename
return [resource_filename(__name__, 'templates')]
# IRequestHandler methods
def match_request(self, req):
match = re.match(r'^/depgraph/(?P<realm>ticket|milestone)/'
r'(?P<id>((?!depgraph).)+)(/depgraph)?$',
req.path_info)
if match:
req.args['realm'] = match.group('realm')
req.args['id'] = match.group('id')
return True
def process_request(self, req):
req.perm.require('TICKET_VIEW')
realm = req.args['realm']
id_ = req.args['id']
if not which(self.dot_path):
raise TracError(_("Path to dot executable is invalid: %(path)s",
path=self.dot_path))
# Urls to generate the depgraph for a ticket is /depgraph/ticketnum
# Urls to generate the depgraph for a milestone is
# /depgraph/milestone/milestone_name
# List of tickets to generate the depgraph.
if realm == 'milestone':
# We need to query the list of tickets in the milestone
query = Query(self.env, constraints={'milestone': [id_]}, max=0)
tkt_ids = [fields['id'] for fields in query.execute(req)]
else:
tid = as_int(id_, None)
if tid is None:
raise TracError(tag_("%(id)s is not a valid ticket id.",
id=html.tt(id_)))
tkt_ids = [tid]
# The summary argument defines whether we place the ticket id or
# its summary in the node's label
label_summary = 0
if 'summary' in req.args:
label_summary = int(req.args.get('summary'))
g = self._build_graph(req, tkt_ids, label_summary=label_summary)
if req.path_info.endswith('/depgraph') or 'format' in req.args:
format_ = req.args.get('format')
if format_ == 'text':
# In case g.__str__ returns unicode, convert it in ascii
req.send(to_unicode(g).encode('ascii', 'replace'),
'text/plain')
elif format_ == 'debug':
import pprint
req.send(
pprint.pformat(
[TicketLinks(self.env, tkt_id) for tkt_id in tkt_ids]
),
'text/plain')
elif format_ is not None:
if format_ in self.acceptable_formats:
mimetype = Mimeview(self.env). \
mime_map.get(format_, 'text/plain')
req.send(g.render(self.dot_path, format_), mimetype)
else:
raise TracError(_("The %(format)s format is not allowed.",
format=format_))
if self.use_gs:
ps = g.render(self.dot_path, 'ps2')
gs = subprocess.Popen(
[self.gs_path, '-q', '-dTextAlphaBits=4',
'-dGraphicsAlphaBits=4', '-sDEVICE=png16m',
'-sOutputFile=%stdout%', '-'],
stdin=subprocess.PIPE, stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
img, err = gs.communicate(ps)
if err:
self.log.debug('MasterTickets: Error from gs: %s', err)
else:
img = g.render(self.dot_path)
req.send(img, 'image/png')
else:
data = {}
# Add a context link to enable/disable labels in nodes.
if label_summary:
add_ctxtnav(req, 'Without labels',
req.href(req.path_info, summary=0))
else:
add_ctxtnav(req, 'With labels',
req.href(req.path_info, summary=1))
if realm == 'milestone':
add_ctxtnav(req, 'Back to Milestone: %s' % id_,
req.href.milestone(id_))
data['milestone'] = id_
else:
data['ticket'] = id_
add_ctxtnav(req, 'Back to Ticket #%s' % id_,
req.href.ticket(id_))
try:
data['format'] = self.acceptable_formats[0]
except IndexError:
data['format'] = 'png'
data['graph'] = g
data['graph_render'] = functools.partial(g.render, self.dot_path)
data['use_gs'] = self.use_gs
return 'depgraph.html', data, None
def _build_graph(self, req, tkt_ids, label_summary=0):
g = graphviz.Graph(log=self.log)
g.label_summary = label_summary
g.attributes['rankdir'] = self.graph_direction
node_default = g['node']
node_default['style'] = 'filled'
edge_default = g['edge']
edge_default['style'] = ''
# Force this to the top of the graph
for tid in tkt_ids:
g[tid]
if self.show_key:
g[-1]['label'] = self.closed_text
g[-1]['fillcolor'] = self.closed_color
g[-1]['shape'] = 'box'
g[-2]['label'] = self.opened_text
g[-2]['fillcolor'] = self.opened_color
g[-2]['shape'] = 'box'
links = TicketLinks.walk_tickets(self.env, tkt_ids, self.full_graph)
links = sorted(links, key=lambda link: link.tkt.id)
for link in links:
tkt = link.tkt
node = g[tkt.id]
if label_summary:
label = u'#%s %s' % (tkt.id, tkt['summary'])
else:
label = u'#%s' % tkt.id
node['label'] = escape('\n'.join(textwrap.wrap(label, 30)))
node['fillcolor'] = tkt['status'] == 'closed' and \
self.closed_color or self.opened_color
node['URL'] = req.href.ticket(tkt.id)
node['alt'] = u'Ticket #%s' % tkt.id
node['tooltip'] = escape('#%s (%s) %s' % (tkt.id, tkt['status'],
tkt['summary']))
if self.highlight_target and tkt.id in tkt_ids:
node['penwidth'] = 3
for n in link.blocking:
node > g[n]
return g
def _link_tickets(self, req, tickets):
items = []
for i, word in enumerate(re.split(r'([;,\s]+)', tickets)):
if i % 2:
items.append(word)
elif word:
tid = word
word = '#%s' % word
try:
ticket = Ticket(self.env, tid)
if 'TICKET_VIEW' in req.perm(ticket.resource):
word = \
html.a(
'#%s' % ticket.id,
href=req.href.ticket(ticket.id),
class_=classes(ticket['status'], 'ticket'),
title=get_resource_summary(self.env,
ticket.resource)
)
except ResourceNotFound:
pass
items.append(word)
if items:
return html(items)
else:
return None
def to_int_set(splittable):
return set(int(n) for n in re.split(r'[\s,]+', splittable))
def which(program):
def is_exe(fpath):
return os.path.isfile(fpath) and os.access(fpath, os.X_OK)
fpath, fname = os.path.split(program)
if fpath:
if is_exe(program):
return program
else:
for path in os.environ["PATH"].split(os.pathsep):
path = path.strip('"')
exe_file = os.path.join(path, program)
if is_exe(exe_file):
return exe_file
return None
致以诚挚的问候 保罗
尝试看看这个：https://github.com/Ya55iiiine/MasterTicketsPlugin 我目前正在努力升级它