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#!/usr/bin/env python

import plistlib

def main():
    from optparse import OptionParser, OptionGroup
    parser = OptionParser("""\
Usage: %prog [options] <path>

Utility for dumping Clang-style logged diagnostics.\
""")
    parser.add_option("-a", "--all", action="store_true", dest="all",
                      default=False, help="dump all messages.")
    parser.add_option("-e", "--error", action="store_true", dest="error",
                      default=False, help="dump 'error' messages.")
    parser.add_option("-f", "--fatal", action="store_true", dest="fatal",
                      default=False, help="dump 'fatal error' messages.")
    parser.add_option("-i", "--ignored", action="store_true", dest="ignored",
                      default=False, help="dump 'ignored' messages.")
    parser.add_option("-n", "--note", action="store_true", dest="note",
                      default=False, help="dump 'note' messages.")
    parser.add_option("-w", "--warning", action="store_true", dest="warning",
                      default=False, help="dump 'warning' messages.")
    (opts, args) = parser.parse_args()

    if len(args) != 1:
        parser.error("invalid number of arguments")

    levels = {'error': False, 'fatal error': False, 'ignored': False,
              'note': False, 'warning': False}
    if opts.error:
        levels['error'] = True
    if opts.fatal:
        levels['fatal error'] = True
    if opts.ignored:
        levels['ignored'] = True
    if opts.note:
        levels['note'] = True
    if opts.warning:
        levels['warning'] = True

    path, = args

    # Read the diagnostics log.
    f = open(path)
    try:
        data = f.read()
    finally:
        f.close()

    # Complete the plist (the log itself is just the chunks).
    data = """\
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" \
"http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<array>
%s
</array>
</plist>""" % data

    # Load the diagnostics.
    diags = plistlib.readPlistFromString(data)

    # Print out the diagnostics.
    print
    print "**** BUILD DIAGNOSTICS ****"
    for i, file_diags in enumerate(diags):
        file = file_diags.get('main-file')
        print "*** %s ***" % file
        for d in file_diags.get('diagnostics', ()):
            if levels[d.get('level')] or opts.all:
                print " %s:%s:%s: %s: %s" % (
                    d.get('filename'), d.get('line'), d.get('column'),
                    d.get('level'), d.get('message'))

if __name__ == "__main__":
    main()
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