1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
|
#!/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.
"""
from __future__ import print_function
try:
import http.server as httpserver
except ImportError:
import BaseHTTPServer as httpserver
import subprocess
import sys
import webbrowser
import urllib2
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 = next(lines)[:-1] # strip trailing colon
line = next(lines)
(match, rule) = match_strip(line, ' input: ')
if match:
(match, line) = match_strip(next(lines), ' ')
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(next(lines), ' ')
match, _ = match_strip(line, ' outputs:')
if match:
(match, line) = match_strip(next(lines), ' ')
while match:
outputs.append(line)
(match, line) = match_strip(next(lines), ' ')
except StopIteration:
pass
return Node(inputs, rule, target, outputs)
def create_page(body):
return '''<!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>
''' + body
def generate_html(node):
document = ['<h1><tt>%s</tt></h1>' % node.target]
if node.inputs:
document.append('<h2>target is built using rule <tt>%s</tt> of</h2>' %
node.rule)
if len(node.inputs) > 0:
document.append('<div class=filelist>')
for input, type in sorted(node.inputs):
extra = ''
if type:
extra = ' (%s)' % type
document.append('<tt><a href="?%s">%s</a>%s</tt><br>' %
(input, input, extra))
document.append('</div>')
if node.outputs:
document.append('<h2>dependent edges build:</h2>')
document.append('<div class=filelist>')
for output in sorted(node.outputs):
document.append('<tt><a href="?%s">%s</a></tt><br>' %
(output, output))
document.append('</div>')
return '\n'.join(document)
def ninja_dump(target):
proc = subprocess.Popen([sys.argv[1], '-t', 'query', target],
stdout=subprocess.PIPE, stderr=subprocess.PIPE,
universal_newlines=True)
return proc.communicate() + (proc.returncode,)
class RequestHandler(httpserver.BaseHTTPRequestHandler):
def do_GET(self):
assert self.path[0] == '/'
target = urllib2.unquote(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:]
ninja_output, ninja_error, exit_code = ninja_dump(target)
if exit_code == 0:
page_body = generate_html(parse(ninja_output.strip()))
else:
# Relay ninja's error message.
page_body = '<h1><tt>%s</tt></h1>' % ninja_error
self.send_response(200)
self.end_headers()
self.wfile.write(create_page(page_body).encode('utf-8'))
def log_message(self, format, *args):
pass # Swallow console spam.
port = 8000
httpd = httpserver.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.
|
