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llvm-mirror/tools/sancov/coverage-report-server.py
Chandler Carruth ae65e281f3 Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351636
2019-01-19 08:50:56 +00:00

205 lines
6.5 KiB
Python
Executable File

#!/usr/bin/env python3
#===- symcov-report-server.py - Coverage Reports HTTP Serve --*- python -*--===#
#
# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
# See https://llvm.org/LICENSE.txt for license information.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
#
#===------------------------------------------------------------------------===#
'''(EXPERIMENTAL) HTTP server to browse coverage reports from .symcov files.
Coverage reports for big binaries are too huge, generating them statically
makes no sense. Start the server and go to localhost:8001 instead.
Usage:
./tools/sancov/symcov-report-server.py \
--symcov coverage_data.symcov \
--srcpath root_src_dir
Other options:
--port port_number - specifies the port to use (8001)
--host host_name - host name to bind server to (127.0.0.1)
'''
from __future__ import print_function
import argparse
import http.server
import json
import socketserver
import time
import html
import os
import string
import math
INDEX_PAGE_TMPL = """
<html>
<head>
<title>Coverage Report</title>
<style>
.lz { color: lightgray; }
</style>
</head>
<body>
<table>
<tr><th>File</th><th>Coverage</th></tr>
<tr><td><em>Files with 0 coverage are not shown.</em></td></tr>
$filenames
</table>
</body>
</html>
"""
CONTENT_PAGE_TMPL = """
<html>
<head>
<title>$path</title>
<style>
.covered { background: lightgreen; }
.not-covered { background: lightcoral; }
.partially-covered { background: navajowhite; }
.lz { color: lightgray; }
</style>
</head>
<body>
<pre>
$content
</pre>
</body>
</html>
"""
class SymcovData:
def __init__(self, symcov_json):
self.covered_points = frozenset(symcov_json['covered-points'])
self.point_symbol_info = symcov_json['point-symbol-info']
self.file_coverage = self.compute_filecoverage()
def filenames(self):
return self.point_symbol_info.keys()
def has_file(self, filename):
return filename in self.point_symbol_info
def compute_linemap(self, filename):
"""Build a line_number->css_class map."""
points = self.point_symbol_info.get(filename, dict())
line_to_points = dict()
for fn, points in points.items():
for point, loc in points.items():
line = int(loc.split(":")[0])
line_to_points.setdefault(line, []).append(point)
result = dict()
for line, points in line_to_points.items():
status = "covered"
covered_points = self.covered_points & set(points)
if not len(covered_points):
status = "not-covered"
elif len(covered_points) != len(points):
status = "partially-covered"
result[line] = status
return result
def compute_filecoverage(self):
"""Build a filename->pct coverage."""
result = dict()
for filename, fns in self.point_symbol_info.items():
file_points = []
for fn, points in fns.items():
file_points.extend(points.keys())
covered_points = self.covered_points & set(file_points)
result[filename] = int(math.ceil(
len(covered_points) * 100 / len(file_points)))
return result
def format_pct(pct):
pct_str = str(max(0, min(100, pct)))
zeroes = '0' * (3 - len(pct_str))
if zeroes:
zeroes = '<span class="lz">{0}</span>'.format(zeroes)
return zeroes + pct_str
class ServerHandler(http.server.BaseHTTPRequestHandler):
symcov_data = None
src_path = None
def do_GET(self):
if self.path == '/':
self.send_response(200)
self.send_header("Content-type", "text/html; charset=utf-8")
self.end_headers()
filelist = []
for filename in sorted(self.symcov_data.filenames()):
file_coverage = self.symcov_data.file_coverage[filename]
if not file_coverage:
continue
filelist.append(
"<tr><td><a href=\"./{name}\">{name}</a></td>"
"<td>{coverage}%</td></tr>".format(
name=html.escape(filename, quote=True),
coverage=format_pct(file_coverage)))
response = string.Template(INDEX_PAGE_TMPL).safe_substitute(
filenames='\n'.join(filelist))
self.wfile.write(response.encode('UTF-8', 'replace'))
elif self.symcov_data.has_file(self.path[1:]):
filename = self.path[1:]
filepath = os.path.join(self.src_path, filename)
if not os.path.exists(filepath):
self.send_response(404)
self.end_headers()
return
self.send_response(200)
self.send_header("Content-type", "text/html; charset=utf-8")
self.end_headers()
linemap = self.symcov_data.compute_linemap(filename)
with open(filepath, 'r', encoding='utf8') as f:
content = "\n".join(
["<span class='{cls}'>{line}&nbsp;</span>".format(
line=html.escape(line.rstrip()),
cls=linemap.get(line_no, ""))
for line_no, line in enumerate(f, start=1)])
response = string.Template(CONTENT_PAGE_TMPL).safe_substitute(
path=self.path[1:],
content=content)
self.wfile.write(response.encode('UTF-8', 'replace'))
else:
self.send_response(404)
self.end_headers()
def main():
parser = argparse.ArgumentParser(description="symcov report http server.")
parser.add_argument('--host', default='127.0.0.1')
parser.add_argument('--port', default=8001)
parser.add_argument('--symcov', required=True, type=argparse.FileType('r'))
parser.add_argument('--srcpath', required=True)
args = parser.parse_args()
print("Loading coverage...")
symcov_json = json.load(args.symcov)
ServerHandler.symcov_data = SymcovData(symcov_json)
ServerHandler.src_path = args.srcpath
socketserver.TCPServer.allow_reuse_address = True
httpd = socketserver.TCPServer((args.host, args.port), ServerHandler)
print("Serving at {host}:{port}".format(host=args.host, port=args.port))
try:
httpd.serve_forever()
except KeyboardInterrupt:
pass
httpd.server_close()
if __name__ == '__main__':
main()