#!/bin/sh
# \
exec tclsh8.3 "$0" "$@"

package require xml

set bytes 0
set chars 0
set words 0
set lines 0

proc cdata {data args} {
    global bytes chars words lines

    incr bytes [string bytelength $data]
    incr chars [string length $data]
    incr lines [regsub -all \n $data {} discard]
    regsub -all "\[ \t\r\n\]+" [string trim $data] { } data
    incr words [regsub -all { } $data {} discard]

    return {}
}

set format {%1$7d%2$8d%3$8d %5$10s}

set input {}
foreach opt $argv {
    switch -- $opt {
	--bytes {
	    set format {%4$7d}
	}

	-c -
	--chars {
	    set format {%3$7d}
	}

	-w -
	--words {
	    set format {%2$7d}
	}

	-l -
	--lines {
	    set format {%1$7d}
	}

	-h -
	--help {
	    puts stderr "$argv0 \[-clw\] \[--bytes\] \[--chars\] \[--words\] \[--lines\] \[--help\] \[--version\] \[file...\]"
	    puts stderr "Counts number of bytes, characters, words and lines in an XML document"
	}
	--version {
	    puts stderr "xmlwc version 1.0"
	}

	default {
	    lappend input $opt
	}
    }
}

if {![llength $input]} {
    set p [xml::parser -characterdatacommand cdata]
    if {[catch {$p parse [read stdin]} err]} {
	puts stderr $err
	exit 1
    }
} else {
    foreach in $input {
	if {[catch {open $in} ch]} {
	    puts stderr "unable to open file \"$in\""
	    exit 1
	}
	set p [xml::parser -characterdatacommand cdata]
	if {[catch {$p parse [read $ch]} err]} {
	    puts stderr $err
	    exit 1
	}
	catch {close $ch}
    }
}

puts [format $format $lines $words $chars $bytes $input]
exit 0