| #!/usr/bin/env python |
| # |
| # Copyright 2001 Google Inc. All Rights Reserved. |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| """Simple web server for browsing dependency graph data. |
| |
| This script is inlined into the final executable and spawned by |
| it when needed. |
| """ |
| |
| import BaseHTTPServer |
| import subprocess |
| import sys |
| import webbrowser |
| from collections import namedtuple |
| |
| Node = namedtuple('Node', ['inputs', 'rule', 'target', 'outputs']) |
| |
| # Ideally we'd allow you to navigate to a build edge or a build node, |
| # with appropriate views for each. But there's no way to *name* a build |
| # edge so we can only display nodes. |
| # |
| # For a given node, it has at most one input edge, which has n |
| # different inputs. This becomes node.inputs. (We leave out the |
| # outputs of the input edge due to what follows.) The node can have |
| # multiple dependent output edges. Rather than attempting to display |
| # those, they are summarized by taking the union of all their outputs. |
| # |
| # This means there's no single view that shows you all inputs and outputs |
| # of an edge. But I think it's less confusing than alternatives. |
| |
| def match_strip(line, prefix): |
| if not line.startswith(prefix): |
| return (False, line) |
| return (True, line[len(prefix):]) |
| |
| def parse(text): |
| lines = iter(text.split('\n')) |
| |
| target = None |
| rule = None |
| inputs = [] |
| outputs = [] |
| |
| try: |
| target = lines.next()[:-1] # strip trailing colon |
| |
| line = lines.next() |
| (match, rule) = match_strip(line, ' input: ') |
| if match: |
| (match, line) = match_strip(lines.next(), ' ') |
| while match: |
| type = None |
| (match, line) = match_strip(line, '| ') |
| if match: |
| type = 'implicit' |
| (match, line) = match_strip(line, '|| ') |
| if match: |
| type = 'order-only' |
| inputs.append((line, type)) |
| (match, line) = match_strip(lines.next(), ' ') |
| |
| match, _ = match_strip(line, ' outputs:') |
| if match: |
| (match, line) = match_strip(lines.next(), ' ') |
| while match: |
| outputs.append(line) |
| (match, line) = match_strip(lines.next(), ' ') |
| except StopIteration: |
| pass |
| |
| return Node(inputs, rule, target, outputs) |
| |
| def generate_html(node): |
| print '''<!DOCTYPE html> |
| <style> |
| body { |
| font-family: sans; |
| font-size: 0.8em; |
| margin: 4ex; |
| } |
| h1 { |
| font-weight: normal; |
| font-size: 140%; |
| text-align: center; |
| margin: 0; |
| } |
| h2 { |
| font-weight: normal; |
| font-size: 120%; |
| } |
| tt { |
| font-family: WebKitHack, monospace; |
| white-space: nowrap; |
| } |
| .filelist { |
| -webkit-columns: auto 2; |
| } |
| </style>''' |
| |
| print '<h1><tt>%s</tt></h1>' % node.target |
| |
| if node.inputs: |
| print '<h2>target is built using rule <tt>%s</tt> of</h2>' % node.rule |
| if len(node.inputs) > 0: |
| print '<div class=filelist>' |
| for input, type in sorted(node.inputs): |
| extra = '' |
| if type: |
| extra = ' (%s)' % type |
| print '<tt><a href="?%s">%s</a>%s</tt><br>' % (input, input, extra) |
| print '</div>' |
| |
| if node.outputs: |
| print '<h2>dependent edges build:</h2>' |
| print '<div class=filelist>' |
| for output in sorted(node.outputs): |
| print '<tt><a href="?%s">%s</a></tt><br>' % (output, output) |
| print '</div>' |
| |
| def ninja_dump(target): |
| proc = subprocess.Popen([sys.argv[1], '-t', 'query', target], |
| stdout=subprocess.PIPE) |
| return proc.communicate()[0] |
| |
| class RequestHandler(BaseHTTPServer.BaseHTTPRequestHandler): |
| def do_GET(self): |
| assert self.path[0] == '/' |
| target = self.path[1:] |
| |
| if target == '': |
| self.send_response(302) |
| self.send_header('Location', '?' + sys.argv[2]) |
| self.end_headers() |
| return |
| |
| if not target.startswith('?'): |
| self.send_response(404) |
| self.end_headers() |
| return |
| target = target[1:] |
| |
| input = ninja_dump(target) |
| |
| self.send_response(200) |
| self.end_headers() |
| stdout = sys.stdout |
| sys.stdout = self.wfile |
| try: |
| generate_html(parse(input.strip())) |
| finally: |
| sys.stdout = stdout |
| |
| def log_message(self, format, *args): |
| pass # Swallow console spam. |
| |
| port = 8000 |
| httpd = BaseHTTPServer.HTTPServer(('',port), RequestHandler) |
| try: |
| print 'Web server running on port %d, ctl-C to abort...' % port |
| webbrowser.open_new('http://localhost:%s' % port) |
| httpd.serve_forever() |
| except KeyboardInterrupt: |
| print |
| pass # Swallow console spam. |
| |
| |
