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gprof2html.py

#! /usr/bin/python2.7

"""Transform gprof(1) output into useful HTML."""

import re, os, sys, cgi, webbrowser

header = """\
<html>
<head>
  <title>gprof output (%s)</title>
</head>
<body>
<pre>
"""

trailer = """\
</pre>
</body>
</html>
"""

def add_escapes(input):
    for line in input:
        yield cgi.escape(line)

def main():
    filename = "gprof.out"
    if sys.argv[1:]:
        filename = sys.argv[1]
    outputfilename = filename + ".html"
    input = add_escapes(file(filename))
    output = file(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+)(( &lt;cycle.*&gt;)? \[\d+\])\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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