From 80e893e4edd9fe3e2f3c7eae0e49d193f19f2a16 Mon Sep 17 00:00:00 2001
From: Shiar <shiar@shiar.org>
Date: Mon, 12 Nov 2007 05:24:26 +0100
Subject: [PATCH] also read replay header in screp

Parses the header leading commands (no problem since it should always
have a constant size), so input (extractor) needs to be modified.
Recognizes most data, but players array can benefit from some additional
parsing and usage in commands output.
---
 screp | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)

diff --git a/screp b/screp
index 1922415..10a2554 100755
--- a/screp
+++ b/screp
@@ -417,6 +417,53 @@ sub showtime {
 	return sprintf "%d:%04.1f", $minutes, $time - $minutes * 60;
 }
 
+sub unpackhash {
+	my ($template, $expr, @elements) = @_;
+	my @data = unpack $template, $expr;
+	my %map;
+	$map{$_} = shift @data for @elements;
+	return (\%map, @data);
+}
+
+local $_ = Data::StarCraft::Replay::_read(undef, \*STDIN, 633)
+	and my ($head, @headdata) = unpackhash("CVa3Va12Z28v2Z16Z24Ca26a38a*", $_, qw(
+		engine frames mag1 time mag2 name width height
+		unknown1 creator unknown2 map unknown3
+	))
+	or die "Couldn't read replay header\n";
+
+$_ eq "\0\0\110" or warn sprintf(
+	"Mismatch in first header constant: %s\n",
+	join ",", map ord, split //, $_
+) for $head->{mag1};
+$_ eq "\10"x8 . "\0"x4 or warn sprintf(
+	"Mismatch in second header constant: %s\n",
+	join ",", map ord, split //, $_
+) for $head->{mag2};
+delete $head->{$_} for qw(mag1 mag2 unknown1 unknown2);
+
+my @playdata = unpack "a36"x12 . "V8C8", $headdata[0]
+	or die "Couldn't parse player data in replay header\n";
+
+my @player;
+push @player, unpackhash("x11Z25", shift @playdata, qw/name/) for 0 .. 11;
+$player[$_]->{color} = shift @playdata for 0 .. 7;
+$player[$_]->{index} = shift @playdata for 0 .. 7;
+
+printf "%s: %s\n", $_, $head->{$_} for qw(name creator);
+use Date::Format;
+printf "created: %s\n", time2str('%Y-%m-%d %X', $_) for $head->{time};
+printf "map: %s (%dx%d)\n", map $head->{$_}, qw(map width height);
+printf "frames: %s (%s)\n", $_, showtime($_) for $head->{frames};
+print "\n";
+
+if ($SHOWWARN) {
+	print Dumper $head;
+	print Dumper \@player;
+	#printf ":%s\n", join ",", map sprintf('%X', ord $_), split // for @headdata;
+	print "\n";
+}
+
 my $map = Data::StarCraft::Replay->new->open(\*STDIN);
 
 if ($SHOWWARN) {
-- 
2.30.0