Convert output from Google's cpplint.py to the cppcheck XML format for consumption by Jenkins cppcheck plugin

cpplint_to_cppcheckxml.py

#!/usr/bin/env python

# Convert output from Google's cpplint.py to the cppcheck XML format for
# consumption by the Jenkins cppcheck plugin.

# Reads from stdin and writes to stderr (to mimic cppcheck)

# https://stackoverflow.com/questions/14172232/how-to-make-cpplint-work-with-jenkins-warnings-plugin

import sys
import re
import xml.sax.saxutils

def cpplint_score_to_cppcheck_severity(score):
    # I'm making this up
    if score == 1:
        return 'style'
    elif score == 2:
        return 'style'
    elif score == 3:
        return 'warning'
    elif score == 4:
        return 'warning'
    elif score == 5:
        return 'error'

def parse():
    # TODO: do this properly, using the xml module.
    # Write header
    sys.stderr.write('''<?xml version="1.0" encoding="UTF-8"?>\n''')
    sys.stderr.write('''<results>\n''')

    # Do line-by-line conversion
    r = re.compile('([^:]*):([0-9]*):  ([^\[]*)\[([^\]]*)\] \[([0-9]*)\].*')

    for l in sys.stdin.readlines():
        m = r.match(l.strip())
        if not m:
            continue
        g = m.groups()
        if len(g) != 5:
            continue
        fname, lineno, rawmsg, label, score = g  
        # Protect Jenkins from bad XML, which makes it barf
        msg = xml.sax.saxutils.escape(rawmsg)
        # A "[google] prefix to make easy to distinguish ccplint warning from cppcheck messages
        label = "[google]/" + label
        # prepare data to be used as an attribute value
        msg = xml.sax.saxutils.quoteattr(msg)
        severity = cpplint_score_to_cppcheck_severity(int(score))
        sys.stderr.write('''<error file="%s" line="%s" id="%s" severity="%s" msg=%s/>\n'''%(fname, lineno, label, severity, msg))

    # Write footer
    sys.stderr.write('''</results>\n''')


if __name__ == '__main__':
    parse()