#!/usr/bin/env perl
# $Id: tracemunch,v 1.17 2017/12/23 17:51:31 tom Exp $
##############################################################################
# Copyright (c) 1998-2005,2017 Free Software Foundation, Inc.                #
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# copy of this software and associated documentation files (the "Software"), #
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##############################################################################
# tracemunch -- compactify ncurses trace logs
#
# The error logs produced by ncurses with tracing enabled can be very tedious
# to wade through.  This script helps by compacting runs of log lines that
# can be conveniently expressed as higher-level operations.

use strict;
use warnings;

our $putattr =
  "PutAttrChar\\({{ '(.)' = 0[0-7]+ }}\\) at \\(([0-9]+), ([0-9]+)\\)";
our $waddnstr =
  "waddnstr\\(0x([[:xdigit:]]+),\"([^\"]+)\",[0-9]+\\) called {A_NORMAL}";

our $scr_nums = 0;
our $thr_nums = 0;
our $try_nums = 0;
our $win_nums = 0;
our $curscr   = "";
our $newscr   = "";
our $stdscr   = "";
our %scr_addr;
our %thr_addr;
our %try_addr;
our %win_addr;

sub transaddr {
    my $n;
    my $arg = $_[0];

    $arg =~ s/\b$curscr\b/curscr/g if ($curscr);
    $arg =~ s/\b$newscr\b/newscr/g if ($newscr);
    $arg =~ s/\b$stdscr\b/stdscr/g if ($stdscr);
    foreach my $addr ( keys %scr_addr ) {
        $n = $scr_addr{$addr};
        $arg =~ s/\b$addr\b/screen$n/g;
    }
    foreach my $addr ( keys %thr_addr ) {
        $n = $thr_addr{$addr};
        $arg =~ s/\b$addr\b/thread$n/g;
    }
    foreach my $addr ( keys %try_addr ) {
        $n = $try_addr{$addr};
        $arg =~ s/\b$addr\b/tries_$n/g;
    }
    foreach my $addr ( keys %win_addr ) {
        $n = $win_addr{$addr};
        $arg =~ s/\b$addr\b/window$n/g;
    }
    if ( $arg =~ /add_wch\((window\d+,)?0x[[:xdigit:]]+\)/i ) {
        $arg =~ s/(0x[[:xdigit:]]+)[)]/\&wch)/i;
    }
    elsif ( $arg =~ /color_content\((screen\d+,)?\d+(,0x[[:xdigit:]]+){3}/i ) {
        $arg =~ s/(,0x[[:xdigit:]]+){3}[)]/,\&r,\&g,\&b)/i;
    }
    elsif ( $arg =~ /pair_content\((screen\d+,)?\d+(,0x[[:xdigit:]]+){2}/i ) {
        $arg =~ s/(,0x[[:xdigit:]]+){2}[)]/,\&fg,\&bg)/i;
    }

    return $arg;
}

while (<STDIN>) {
    my $addr;
    my $n;
    my $awaiting = "";

  CLASSIFY: {

        my $thread = "";
        if ( $_ =~ /^(0x[[:xdigit:]]+):/ ) {
            $thr_addr{$1} = ++$thr_nums unless defined $thr_addr{$1};
            $thread = "thread" . $thr_addr{$1} . ":";
            $_ =~ s/^[^:]*://;
        }

        # Transform window pointer addresses so it's easier to compare logs
        $awaiting = "curscr" if ( $_ =~ /creating curscr/ );
        $awaiting = "newscr" if ( $_ =~ /creating newscr/ );
        $awaiting = "stdscr" if ( $_ =~ /creating stdscr/ );
        $awaiting = "screen" if ( $_ =~ /^(\+ )*called {new_prescr\(\)/ );
        if ( $_ =~ /^create :window 0x([[:xdigit:]]+)/ ) {
            $addr = "0x$1";
            if ( $awaiting eq "curscr" ) {
                $curscr = $addr;
            }
            elsif ( $awaiting eq "newscr" ) {
                $newscr = $addr;
            }
            elsif ( $awaiting eq "stdscr" ) {
                $stdscr = $addr;
            }
            else {
                $win_addr{$addr} = $win_nums++;
            }
            $awaiting = "";
        }
        elsif ( $_ =~ /^(\+ )*called {_nc_add_to_try\((0x[[:xdigit:]]+),/ ) {
            $try_addr{$2} = ++$try_nums unless defined $try_addr{$2};
        }
        elsif ( $_ =~ /^(\+ )*_nc_alloc_screen_sp 0x([[:xdigit:]]+)/ ) {
            $addr = "0x$2";
            $scr_addr{$addr} = ++$scr_nums unless ( $scr_addr{$addr} );
            $awaiting = "";
        }
        elsif ( $_ =~ /^(\+ )*return }0x([[:xdigit:]]+)/ ) {
            $addr = "0x$2";
            if ( $awaiting eq "screen" ) {
                $scr_addr{$addr} = ++$scr_nums unless ( $scr_addr{$addr} );
            }
        }
        elsif ( $_ =~ /^\.\.\.deleted win=0x([[:xdigit:]]+)/ ) {
            $addr = "0x$1";
            $_    = &transaddr($_);
            if ( $addr eq $curscr ) {
                $curscr = "";
            }
            elsif ( $addr eq $newscr ) {
                $newscr = "";
            }
            elsif ( $addr eq $stdscr ) {
                $stdscr = "";
            }
            else {
                undef $win_addr{$addr};
            }
        }

        # Compactify runs of PutAttrChar calls (TR_CHARPUT)
        if ( $_ =~ /$putattr/ ) {
            my $putattr_chars = $1;
            my $starty        = $2;
            my $startx        = $3;
            while (<STDIN>) {
                if ( $_ =~ /$putattr/ ) {
                    $putattr_chars .= $1;
                }
                else {
                    last;
                }
            }
            print
"RUN of PutAttrChar()s: \"$putattr_chars\" from ${starty}, ${startx}\n";
            redo CLASSIFY;
        }

        # Compactify runs of waddnstr calls (TR_CALLS)
        if ( $_ =~ /$waddnstr/ ) {
            my $waddnstr_chars = $2;
            my $winaddr        = $1;
            while (<STDIN>) {
                if ( $_ =~ /$waddnstr/ && $1 eq $winaddr ) {
                    $waddnstr_chars .= $2;
                }
                else {
                    last;
                }
            }
            my $winaddstr = &transaddr($winaddr);
            print "RUN of waddnstr()s: $winaddr, \"$waddnstr_chars\"\n";
            redo CLASSIFY;
        }

        # More transformations can go here

        # Repeated runs of anything
        my $anyline     = &transaddr($_);
        my $repeatcount = 1;
        while (<STDIN>) {
            if ( &transaddr($_) eq $anyline ) {
                $repeatcount++;
            }
            else {
                last;
            }
        }
        if ( $repeatcount > 1 ) {
            print "${repeatcount} REPEATS OF $anyline";
        }
        else {
            print $thread . $anyline;
        }
        redo CLASSIFY if $_;

    }    # :CLASSIFY
}

# tracemunch ends here
