File clamav-updateclamconf of Package clamav.606

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File clamav-updateclamconf of Package clamav.606

#!/usr/bin/awk -f
#
# updateclamconf
#
# Merge two clamd.conf or freshclam.conf files and write the result to
# the standard output. The result file contains all comments from the
# second file with the active (i.e. not commented-out) settings from
# the first file merged into it. Settings which were only in the first
# file file and not mentioned in the second file any more, are appended
# at the end, but commented out.
#
# Any comment must start with a hash and a space:
#        # comment
# while any commented out setting must start with a hash and no space:
#        #settingname settingvalue
#
# The first file may optionally have the format that was used up to
# version 0.88.7. In that case the settings will be converted to the
# format that is used in version 0.90 and newer.
#
# Known issues:
#
# If an option exists more than once in eiter file, only the first
# occurance will be moved over from the first file. AFAIK this
# currently only applies to the DatabaseMirror option in
# freshclam.conf.

# Copyright (c) 2006 SUSE LINUX Products GmbH, Nuernberg, Germany.
#
# Authors: Reinhard Max <max@suse.de>
#          Kurt Keller <Kurt@pinboard.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

BEGIN {
    if (ARGC != 3) {
	print "usage: updateclamconf oldfile newfile" > "/dev/stderr"
	exit 1
    }
    # some options may be overridden from the command line
    $0 = override
    for (i=1; i<=NF; i+=2) {
	options[$i] = $i " " $(i+1)
    }
    pass = 0
}
lastname != FILENAME {
    lastname = FILENAME
    pass++
}
# collect options from the first file
pass == 1 && $0 ~ /^[[:space:]]*#?[^[:space:]]/ {
    if (NF == 1) {
	$2 = "yes"
    }
    # copy $1, so that sub() doesn't modify $0
    o = $1
    sub("^#", "", o)
    if (!(o in options)) {
	options[o] = $0
    }
}
# merge options into the content of the second file
pass == 2 {
    # copy $1, so that sub() doesn't modify $0
    o = $1
    sub("^[[:space:]]*#", "", o)
    if (o in options) {
        if (options[o] ~ /^[[:space:]]*#/ && $0 ~ /^[[:space:]]*#/) {
            print
        } else {
            print options[o] 
        }
        delete options[o]
    } else { 
        print
    }
}
# print out any options that were only found in the first file
END {
    for (o in options) {
	print "\n# These options weren't found in the new config file"
	for (o in options) {
	    print "# " options[o]
	}
	break
    }
}

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