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"""Simple web server for browsing dependency graph data. |
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This script is inlined into the final executable and spawned by |
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it when needed. |
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""" |
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try: |
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import http.server as httpserver |
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import socketserver |
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except ImportError: |
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import BaseHTTPServer as httpserver |
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import SocketServer as socketserver |
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import argparse |
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import os |
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import socket |
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import subprocess |
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import sys |
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import webbrowser |
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if sys.version_info >= (3, 2): |
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from html import escape |
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else: |
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from cgi import escape |
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try: |
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from urllib.request import unquote |
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except ImportError: |
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from urllib2 import unquote |
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from collections import namedtuple |
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Node = namedtuple('Node', ['inputs', 'rule', 'target', 'outputs']) |
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def match_strip(line, prefix): |
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if not line.startswith(prefix): |
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return (False, line) |
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return (True, line[len(prefix):]) |
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def html_escape(text): |
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return escape(text, quote=True) |
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def parse(text): |
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lines = iter(text.split('\n')) |
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target = None |
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rule = None |
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inputs = [] |
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outputs = [] |
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try: |
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target = next(lines)[:-1] |
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line = next(lines) |
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(match, rule) = match_strip(line, ' input: ') |
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if match: |
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(match, line) = match_strip(next(lines), ' ') |
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while match: |
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type = None |
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(match, line) = match_strip(line, '| ') |
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if match: |
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type = 'implicit' |
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(match, line) = match_strip(line, '|| ') |
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if match: |
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type = 'order-only' |
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inputs.append((line, type)) |
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(match, line) = match_strip(next(lines), ' ') |
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match, _ = match_strip(line, ' outputs:') |
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if match: |
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(match, line) = match_strip(next(lines), ' ') |
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while match: |
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outputs.append(line) |
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(match, line) = match_strip(next(lines), ' ') |
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except StopIteration: |
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pass |
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return Node(inputs, rule, target, outputs) |
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def create_page(body): |
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return '''<!DOCTYPE html> |
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<style> |
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body { |
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font-family: sans; |
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font-size: 0.8em; |
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margin: 4ex; |
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} |
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h1 { |
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font-weight: normal; |
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font-size: 140%; |
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text-align: center; |
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margin: 0; |
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} |
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h2 { |
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font-weight: normal; |
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font-size: 120%; |
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} |
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tt { |
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font-family: WebKitHack, monospace; |
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white-space: nowrap; |
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} |
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.filelist { |
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-webkit-columns: auto 2; |
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} |
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</style> |
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''' + body |
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def generate_html(node): |
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document = ['<h1><tt>%s</tt></h1>' % html_escape(node.target)] |
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if node.inputs: |
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document.append('<h2>target is built using rule <tt>%s</tt> of</h2>' % |
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html_escape(node.rule)) |
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if len(node.inputs) > 0: |
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document.append('<div class=filelist>') |
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for input, type in sorted(node.inputs): |
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extra = '' |
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if type: |
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extra = ' (%s)' % html_escape(type) |
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document.append('<tt><a href="?%s">%s</a>%s</tt><br>' % |
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(html_escape(input), html_escape(input), extra)) |
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document.append('</div>') |
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if node.outputs: |
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document.append('<h2>dependent edges build:</h2>') |
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document.append('<div class=filelist>') |
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for output in sorted(node.outputs): |
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document.append('<tt><a href="?%s">%s</a></tt><br>' % |
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(html_escape(output), html_escape(output))) |
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document.append('</div>') |
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return '\n'.join(document) |
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def ninja_dump(target): |
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cmd = [args.ninja_command, '-f', args.f, '-t', 'query', target] |
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proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, |
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universal_newlines=True) |
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return proc.communicate() + (proc.returncode,) |
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class RequestHandler(httpserver.BaseHTTPRequestHandler): |
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def do_GET(self): |
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assert self.path[0] == '/' |
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target = unquote(self.path[1:]) |
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if target == '': |
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self.send_response(302) |
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self.send_header('Location', '?' + args.initial_target) |
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self.end_headers() |
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return |
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if not target.startswith('?'): |
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self.send_response(404) |
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self.end_headers() |
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return |
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target = target[1:] |
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ninja_output, ninja_error, exit_code = ninja_dump(target) |
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if exit_code == 0: |
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page_body = generate_html(parse(ninja_output.strip())) |
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else: |
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page_body = '<h1><tt>%s</tt></h1>' % html_escape(ninja_error) |
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self.send_response(200) |
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self.end_headers() |
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self.wfile.write(create_page(page_body).encode('utf-8')) |
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def log_message(self, format, *args): |
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pass |
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parser = argparse.ArgumentParser(prog='ninja -t browse') |
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parser.add_argument('--port', '-p', default=8000, type=int, |
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help='Port number to use (default %(default)d)') |
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parser.add_argument('--hostname', '-a', default='localhost', type=str, |
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help='Hostname to bind to (default %(default)s)') |
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parser.add_argument('--no-browser', action='store_true', |
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help='Do not open a webbrowser on startup.') |
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parser.add_argument('--ninja-command', default='ninja', |
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help='Path to ninja binary (default %(default)s)') |
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parser.add_argument('-f', default='build.ninja', |
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help='Path to build.ninja file (default %(default)s)') |
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parser.add_argument('initial_target', default='all', nargs='?', |
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help='Initial target to show (default %(default)s)') |
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class HTTPServer(socketserver.ThreadingMixIn, httpserver.HTTPServer): |
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daemon_threads = True |
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args = parser.parse_args() |
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port = args.port |
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hostname = args.hostname |
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httpd = HTTPServer((hostname,port), RequestHandler) |
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try: |
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if hostname == "": |
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hostname = socket.gethostname() |
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print('Web server running on %s:%d, ctl-C to abort...' % (hostname,port) ) |
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print('Web server pid %d' % os.getpid(), file=sys.stderr ) |
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if not args.no_browser: |
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webbrowser.open_new('http://%s:%s' % (hostname, port) ) |
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httpd.serve_forever() |
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except KeyboardInterrupt: |
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print() |
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pass |
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