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#!/usr/bin/env perl
# $Id$
# Public domain. Originally written by Karl Berry, 2022.
# 
# Update from CTAN to TL. First, run the test import with c2l; then, if
# no files were added or removed (and it was an existing package),
# automatically run c2l -p to "place" the new package in svn.
# Do not run svn commit.  (Code needs to be refactored for common calls.)

use strict; use warnings;

(my $prg = $0) =~ s,.*/,,;

my $place_branch = 0;
#my $chicken = "";
my $chicken = "-p";

exit (&main ());

sub main {
  my $place = 0;
  if ($ARGV[$#ARGV] =~ /^-?p$/) {
    pop (@ARGV);
    $place = 1;
  }
  printf "$prg: running c2l...";
  my @lines = `set -o pipefail; c2l @ARGV </dev/null 2>&1 | tee /tmp/c2l.out`;
  if ($?) {
    print "first c2l failed, exiting.\n";
    print @lines;
    exit $?;
  }

  my $status = 1;
  my $i;
  for ($i = 0; $i < @lines; $i++) {
    if ($lines[$i] =~ /^current vs.\ new/) {
      my $nextline = $lines[$i+1];
      if ($nextline =~ /^[0-9]+ common files, ([0-9]+) changed/) {
        if ($1 == 0) {
          print "seems nothing changed, done.\n";
          print @lines;
	  $status = 0;
          last;
        } else {
          $status = &do_place ("no new or removed files");
          last;
        }

      } elsif ($place) {
        $status = &do_place ("new/removed files, but p(lace) given");
        last;
      
      } else {
        print "have new/removed files, exiting.\n";
        print @lines;
        last;
      }
    }
  }
  
  if ($i == @lines) {
    if ($place) {
      $status = &do_place ("no current vs. new, but p(lace) given");
    } else {
      print "no current vs. new, exiting.\n";  # new package, presumably
      print @lines;
    }
  }
  
  return $status;
}


sub do_place {
  my ($desc,$c2cmd) = @_;

  my $msg;
  if ($c2cmd && $c2cmd eq "c2b") {
    $msg = "$prg: $desc"; # place on branch
  } else {
    $c2cmd = "c2l";
    my $branch_msg = $place_branch ? "(+branch)" : "";
    $msg = "$desc, rerunning for svn$branch_msg...";
  }
  
  print "$msg\n";
  my $cmd = "set -o pipefail;"
            . "$c2cmd $chicken @ARGV </dev/null 2>&1 | tee /tmp/$c2cmd.out";
  my @placelines = `$cmd`;
  my $status = $?;
  print @placelines;
  if ($status) {
    print "$prg: *** do_place($c2cmd) failed, exiting.\n";

  } elsif ($c2cmd ne "c2b" && $place_branch) {
    $status = &do_place ("running c2b for svn branch", "c2b");
  }
  
  return $status;
}