source: tools/build/clean_hdr.awk @ 9861ef2

#!/usr/bin/awk -f

BEGIN {
        pattern = "^" path "[0-9A-z]*\\.(cc|h)"
        complete_pattern = "^\\(" path "[0-9A-z]*\\.(cc|h)"
        show = 0
}

$1 !~ /^(Makefile.*|Making.*|CXX)/ {
        if( $1 ~ pattern ) {
                show = 1
        }

        if( $1 ~ complete_pattern ) {
                print
        }

        if( show > 0 )
        {
                print
        }
}

$1 ~ /^---/ {
        show = 0
}

$1 ~ /^CXX/ {
        $1 = "  IWYU   "
        print > "/dev/stderr"
}