#! /usr/bin/perl
use strict;
use warnings;

sub gitmark($) {
  my($s)=@_;
  return "" if $s!~m{^(... )([^/]*/+[^/]*)/};
  my($pfx,$dir)=($1,$2);
  local *GIT;
  $dir.="/build/gdbgit";
  return "" if !-d $dir;
  open GIT,"cd '$dir';git log --format=%H HEAD^..HEAD|" or return "";
  my $git=do { local $/; <GIT>; };
  close GIT;
  chomp $git;
  return "${pfx}GIT commit $git\n" if $git=~/^[0-9a-f]{40}$/;
  return "";
}

my @ignore=(
qr{^.PASS: }o,
qr{^.KPASS: }o,
qr{^-FAIL: }o,
qr{^-KFAIL: }o,
qr{^-XFAIL: }o,
qr{^.Test Run By }o,
qr{^.gnatbind }o,
qr{^.gnatlink }o,
qr{^.gnatlink: }o,
qr{^.gnatmake: }o,
qr{^.gcc }o,
qr{^./usr/bin/ld: .* architecture of input file .* is incompatible with .* output\n$}o,
qr{^.collect2: }o,
#qr{^.UNSUPPORTED: }o,
#qr{^.UNTESTED: }o,
#qr{^.UNRESOLVED: }o,
#qr{^.ERROR: }o,
#qr{^.WARNING: }o,
qr{^.[^:]*[.]ad[sb]:[0-9]}o,
qr{^.gdb compile failed, }o,
qr{^.gdb compile failed, /usr/bin/ld: /tmp/[a-zA-Z0-9]*.o: relocation R_X86_64_32S against `a local symbol. can not be used when making a shared object; recompile with -fPIC\n$}o,
qr{^./tmp/[a-zA-Z0-9]*.o: could not read symbols: Bad value\n$}o,
qr{^./tmp/[a-zA-Z0-9]*.s:\d+: Error: unrecognized symbol type "gnu_indirect_function"\n$}o,
qr{^./tmp/[a-zA-Z0-9]*.o: In function `\S+':\n$}o,
qr{^./tmp/[a-zA-Z0-9]*.o:.*: undefined reference to `.*'\n$}o,
qr{^./tmp/[a-zA-Z0-9]*.s:\d+: Error: syntax error; found `.' but expected `,'\n$}o,
qr{^./tmp/[a-zA-Z0-9]*.s:\d+: Error: junk at end of line: `.(?:plt|local)'\n$}o,
qr{^./usr/bin/ld: /tmp/[a-zA-Z0-9]*.o\(\.text\+0x[0-9a-f]+\): unresolvable R_PPC64_REL24 relocation against symbol `\S+'\n$}o,
qr{^.# of }o,
qr{^./home/}o,
qr{^.\.\./as-new [0-9.]*\n$}o,
qr{^.(?:/unsafe)?ld/ld-new [0-9.]*\n$}o,
qr{\bgdb version  \d\S+ -nw -nx\b}o,
qr{^.FAIL: \S+\.exp: valgrind check \d+\n$}o,
qr{^.KFAIL: gdb.threads/watchthreads2.exp: gdb can drop watchpoints in multithreaded app \(PRMS: gdb/10116\)\n$}o,
qr{^.FAIL: gdb.base/info-os.exp: .*\n$}o,
qr{^.FAIL: gdb.threads/multiple-step-overs.exp: .*\n$}o,
qr{^.FAIL: gdb.base/random-signal.exp: stop with control-c \Q(timeout)\E\n$}o,
qr{^.(?:XFAIL|PASS): gdb.threads/attach-many-short-lived-threads.exp: iter \d+: attach(?: \(EPERM\))?\n$}o,
);
my $ignore=shift @ignore;
$ignore=qr/$ignore|$_/ for @ignore;

my $opt_new;
while (1) {
  if ($ARGV[0] eq "-r") {
    $ignore=undef;
    shift;
    next;
  }
  if ($ARGV[0] eq "-N") {
    $opt_new=1;
    shift;
    next;
  }
  last;
}

my $last;
my $lastfile;
local *DIFF;
my(@diff)=("diff","-rU-1",@ARGV);
open DIFF,"-|",@diff or die join(" ",@diff).": $!";
while (<DIFF>) {
  next if /^diff /;
  my($thisname)=m{^.(?:Running (?:.*/)?|[A-Z]+: )(gdb[.]\w+/\S+[.]exp)(?: \Q...\E|: .*)$};
  $thisname||=(m{^.\t\t=== gdb (Summary) ===\n$})[0];
  $thisname||=(m{^(Only in) })[0];
  my $this;
  if (!$thisname || ($last && $thisname eq $last->{"name"})) {
#if (!$thisname) { print "X: !thisname\n"; } else { print "X: \"".$last->{"name"}."\" -> \"$thisname\"\n"; }
    $this=$last;
  } else {
#print "X: new \"$thisname\"\n";
    $last=$this={"name"=>$thisname,"+Running"=>(/^[+]/||0)};
  }
  next if /^@@ .* @@\n$/;
  if ($this->{"print"}) {
    print;
    next;
  }
  if (/^Only in /) {
    $lastfile=$_;
  }
  if (/^--- /) {
    $lastfile=$_.gitmark($_);
    next;
  }
  if (/^\Q+++\E /) {
    $lastfile.=$_.gitmark($_);
    next;
  }
  $this->{"buffer"}.=$_;
  next if /^ /;
  next if /^[+]Running / && $thisname && !$opt_new;
  next if $ignore && /$ignore/o;
  next if /^[+]FAIL: / && $this->{"+Running"};
  next if /^[+]KFAIL: / && $this->{"+Running"};
  next if /^[+]XFAIL: / && $this->{"+Running"};
  next if /^[+]UNTESTED: / && $this->{"+Running"};
  next if /^[+]gdb compile failed, / && $this->{"+Running"};
  next if /^[+].*: Error: bad register name `%.*'\n$/ && $this->{"+Running"};
  next if /^[+].*: Error: `.*' is only supported in 64-bit mode\n$/ && $this->{"+Running"};

  $this->{"print"}=1;
  print $lastfile||""; $lastfile=undef();
  print "\n#".($this->{"name"}||"???")."\n";
  print $this->{"buffer"}; $this->{"buffer"}=undef();
  next;
}