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#! /usr/bin/env python3
"""Transform gprof(1) output into useful HTML."""
import html
import os
import re
import sys
import webbrowser
header = """\
<html>
<head>
<title>gprof output (%s)</title>
</head>
<body>
<pre>
"""
trailer = """\
</pre>
</body>
</html>
"""
def add_escapes(filename):
with open(filename) as fp:
for line in fp:
yield html.escape(line)
def main():
filename = "gprof.out"
if sys.argv[1:]:
filename = sys.argv[1]
outputfilename = filename + ".html"
input = add_escapes(filename)
output = open(outputfilename, "w")
output.write(header % filename)
for line in input:
output.write(line)
if line.startswith(" time"):
break
labels = {}
for line in input:
m = re.match(r"(.* )(\w+)\n", line)
if not m:
output.write(line)
break
stuff, fname = m.group(1, 2)
labels[fname] = fname
output.write('%s<a name="flat:%s" href="#call:%s">%s</a>\n' %
(stuff, fname, fname, fname))
for line in input:
output.write(line)
if line.startswith("index % time"):
break
for line in input:
m = re.match(r"(.* )(\w+)(( <cycle.*>)? \[\d+\])\n", line)
if not m:
output.write(line)
if line.startswith("Index by function name"):
break
continue
prefix, fname, suffix = m.group(1, 2, 3)
if fname not in labels:
output.write(line)
continue
if line.startswith("["):
output.write('%s<a name="call:%s" href="#flat:%s">%s</a>%s\n' %
(prefix, fname, fname, fname, suffix))
else:
output.write('%s<a href="#call:%s">%s</a>%s\n' %
(prefix, fname, fname, suffix))
for line in input:
for part in re.findall(r"(\w+(?:\.c)?|\W+)", line):
if part in labels:
part = '<a href="#call:%s">%s</a>' % (part, part)
output.write(part)
output.write(trailer)
output.close()
webbrowser.open("file:" + os.path.abspath(outputfilename))
if __name__ == '__main__':
main()
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