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in subprojects/performance/src/files/pleac03.groovy [239:370]
121 lines of code
13 McCabe index (conditional complexity)

From: someone@somewhere.com
To: <pleac-discuss@lists.sourceforge.net>
Date: Sun, 31 Dec 2006 02:14:57 +1100
Subject: Re: [Pleac-discuss] C/Posix/GNU - @@pleac@@_10x
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Sender: pleac-discuss-bounces@lists.sourceforge.net
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----- Original Message -----
From: someone@somewhere.com
To: otherperson@somewhereelse.com
Cc: <pleac-discuss@lists.sourceforge.net>
Sent: Wednesday, December 27, 2006 9:18 AM
Subject: Re: [Pleac-discuss] C/Posix/GNU - @@pleac@@_10x

I really like that description of PLEAC.
'''
expected = '''
Sender                    Recipient                 Time              Delta
<origin>                  somewhere.com             01:14:57 06/12/31 
win2K001                  omta05ps.mx.bigpond.com   01:14:57 06/12/31 1m 14s
omta05ps.mx.bigpond.com   mail.sourceforge.net      01:16:11 06/12/31 8s
sc8-sf-mx1-b.sourceforge. sc8-sf-list2-new.sourcefo 01:16:19 06/12/31 1s
sc8-sf-list2-new.sourcefo sc8-sf-spam2.sourceforge. 01:16:20 06/12/31 4s
unknown                   bne012m.server-web.com    01:16:24 06/12/31 1s
'''

class MailHopDelta {
    def headers, firstSender, firstDate, out

    MailHopDelta(mail) {
        extractHeaders(mail)
        out = new StringBuffer()
        def m = (mail =~ /(?m)^Date:\s+(.*)/)
        firstDate = parseDate(m[0][1])
        firstSender = (mail =~ /(?m)^From.*\@([^\s>]*)/)[0][1]
        out('Sender Recipient Time Delta'.split(' '))
    }

    def parseDate(date) {
        try {
            return new SimpleDateFormat('EEE, dd MMM yyyy hh:mm:ss Z').parse(date)
        } catch(java.text.ParseException ex) {}
        try {
            return new SimpleDateFormat('dd MMM yyyy hh:mm:ss Z').parse(date)
        } catch(java.text.ParseException ex) {}
        try {
            return DateFormat.getDateInstance(DateFormat.FULL).parse(date)
        } catch(java.text.ParseException ex) {}
        DateFormat.getDateInstance(DateFormat.LONG).parse(date)
    }

    def extractHeaders(mail) {
        headers = []
        def isHeader = true
        def currentHeader = ''
        mail.split('\n').each{ line ->
            if (!isHeader) return
            switch(line) {
                case ~/^\s*$/:
                    isHeader = false
                    if (currentHeader) headers << currentHeader
                    break
                case ~/^\s+.*/:
                    currentHeader += line; break
                default:
                    if (currentHeader) headers << currentHeader
                    currentHeader = line
            }
        }
    }

    def out(line) {
        out << line[0][0..<[25,line[0].size()].min()].padRight(26)
        out << line[1][0..<[25,line[1].size()].min()].padRight(26)
        out << line[2].padRight(17) + ' '
        out << line[3] + '\n'
    }

    def prettyDate(date) {
        new SimpleDateFormat('hh:mm:ss yy/MM/dd').format(date)
    }

    def process() {
        out(['<origin>', firstSender, prettyDate(firstDate), ''])
        def prevDate = firstDate
        headers.grep(~/^Received:\sfrom.*/).reverseEach{ hop ->
            def from = (hop =~ /from\s+(\S+)|\((.*?)\)/)[0][1]
            def by   = (hop =~ /by\s+(\S+\.\S+)/)[0][1]
            def hopDate = parseDate(hop[hop.lastIndexOf(';')+2..-1])
            out([from, by, prettyDate(prevDate), prettyDelta(hopDate.time - prevDate.time)])
            prevDate = hopDate
        }
        return out.toString()
    }

    def prettyField(secs, sign, ch, multiplier, sb) {
        def whole = (int)(secs / multiplier)
        if (!whole) return 0
        sb << '' + (sign * whole) + ch + ' '
        return whole * multiplier
    }

    def prettyDelta(millis) {
        def sign = millis < 0 ? -1 : 1
        def secs = (int)Math.abs(millis/1000)
        def sb = new StringBuffer()
        secs -= prettyField(secs, sign, 'd', 60 * 60 * 24, sb)
        secs -= prettyField(secs, sign, 'h', 60 * 60, sb)
        secs -= prettyField(secs, sign, 'm', 60, sb)
        prettyField(secs, sign, 's', 1, sb)
        return sb.toString().trim()
    }
}