$VERSION = 1.00;
@ISA = qw(Exporter);
- @EXPORT = qw(parse_branch_spec current_tb_branch run_git_1line
- setup_config check_no_unwanted_metadata);
+ @EXPORT = qw(debug
+ run_git run_git_1line run_git_check_nooutput
+ run_git_test_anyoutput
+ git_config git_dir chdir_toplevel
+ current_branch parse_branch_spec
+ setup_config check_no_unwanted_metadata
+ wf_start wf wf_abort wf_done wf_contents);
%EXPORT_TAGS = ( );
@EXPORT_OK = qw();
}
print STDERR "DEBUG: $msg\n" or die $!;
}
-sub run_git_1line {
+sub run_git {
+ # takes optional prefix arguments:
+ # coderef hook to call for each line read,
+ # with $_ containing chomped line; if not supplied,
+ # output is not read
+ # scalarref place to store exit status; if not supplied,
+ # nonzero exit status is fatal
+ my ($estatusr,$linecallr);
+ while (ref $_[0]) {
+ my $ref = shift @_;
+ if (ref $ref eq 'SCALAR') {
+ $estatusr = $ref;
+ } elsif (ref $ref eq 'CODE') {
+ $linecallr = $ref;
+ } else {
+ die ref($ref)." @_ ?";
+ }
+ }
open GIT, "-|", 'git', @_ or die $!;
- my $l = <GIT>;
- $?=0;
- close GIT or die "git @_ failed ($?)\n";
- chomp $l or die "@_ ?";
+ if ($linecallr) {
+ while (<GIT>) {
+ chomp or die "$_ ?";
+ $linecallr->();
+ }
+ GIT->eof or die $!;
+ }
+ if (!close GIT) {
+ die "git @_ $!" if $!;
+ die unless $?;
+ die "git @_ ($?)" unless $estatusr;
+ $$estatusr = $?;
+ } else {
+ $$estatusr = 0 if $estatusr;
+ }
+}
+
+sub run_git_1line {
+ my $l;
+ run_git(sub { $l = $_; }, @_);
+ die "git @_ ?" unless defined $l;
return $l;
}
-sub run_git_1line_estatus {
- open GIT, "-|", 'git', @_ or die $!;
- my $l = <GIT>;
- $?=0;
- if (close GIT) {
- chomp $l or die "@_ ?";
- return (0,$l);
- } else {
- die unless $?;
- return ($?,undef);
- }
+sub run_git_check_nooutput {
+ my ($what) = shift @_;
+ run_git(sub { die "$what $_\n"; }, @_);
}
-sub run_git_nooutput {
- my $rc = system('git', @_);
- die "git @_ failed ($rc)" if $rc;
+sub run_git_test_anyoutput {
+ my $any = 0;
+ run_git(sub { $any=1; }, @_);
+ return $any;
+}
+
+sub git_config ($$) {
+ my ($cfgvar, $default) = @_;
+ my ($l, $estatus);
+ run_git(\$estatus, sub {
+ die if defined $l;
+ $l = $_; },
+ qw(config), $cfgvar);
+ if (defined $l) {
+ die "$cfgvar ($estatus)" if $estatus;
+ return $l;
+ } else {
+ die "$cfgvar ($estatus)" unless $estatus==0 || $estatus==256;
+ return $default;
+ }
}
sub git_dir () {
return $git_dir;
}
-sub current_tb_branch () {
+sub chdir_toplevel () {
+ my $toplevel;
+ run_git(sub { $toplevel = $_; },
+ qw(rev-parse --show-toplevel));
+ die "not in working tree?\n" unless defined $toplevel;
+ chdir $toplevel or die "chdir toplevel $toplevel: $!\n";
+}
+
+sub current_branch () {
open R, git_dir().'/HEAD' or die "open HEAD $!";
my $ref = <R>; defined $ref or die $!;
close R;
}
}
if (defined $rel_levels) {
- my $branch = current_tb_branch();
+ my $branch = current_branch();
if (!defined $branch->{Nick}) {
die "relative branch spec \`$orig',".
" but current branch not a topbloke branch\n";
}
sub setup_config () {
- my (@files) = (qw(msg deps included flags));
+ my (@files) = (qw(msg deps included flags pflags));
my $version = 1;
foreach my $iteration (qw(0 1)) {
foreach my $file (@files) {
my $cfgname = "merge.topbloke-$file";
- my ($current_estatus, $current) =
- run_git_1line_estatus(qw(config), "$cfgname.driver");
+ my ($current, $current_estatus);
+ run_git(\$current_estatus,
+ sub { $current = $_; },
+ qw(config), "$cfgname.driver");
$current = "## failed $current_estatus" if $current_estatus;
next if $current =~ m/^topbloke-merge-driver --v$version /o;
die "$file $current ?" if $iteration;
debug("setting merge driver $file");
- run_git_nooutput(qw(config), "$cfgname.name",
- "topbloke merge driver for $file");
- run_git_nooutput(qw(config), "$cfgname.driver",
- "topbloke-merge-driver --v$version".
- " $file %O %A %B %L");
+ run_git(qw(config), "$cfgname.name",
+ "topbloke merge driver for $file");
+ run_git(qw(config), "$cfgname.driver",
+ "topbloke-merge-driver --v$version".
+ " $file %O %A %B %L");
}
my ($newattrs, $attrsfile);
foreach my $file (@files) {
}
sub check_no_unwanted_metadata ($) {
+ # for checking foreign branches aren't contaminated
my ($gitbranch) = @_;
- open GIT, "-|", 'git', qw(ls-tree --name-status),
- "$gitbranch:", qw(.topbloke/included .topbloke/flags)
- or die $!;
- while (<GIT>) {
- chomp or die;
- die "foreign unexpectedly contains $_\n";
- }
- GIT->error and die $!;
- close GIT or die $!;
+ run_git_check_nooutput('foreign unexpectedly contains',
+ qw(ls-tree --name-only),
+ "$gitbranch:",
+ qw(.topbloke));
+}
+
+sub wf_start ($) {
+ my ($path) = @_;
+ my $fh = new IO::File "$path.tmp", '>' or die "create $path.tmp: $!\n";
+ return [ $fh, $path ];
+}
+
+sub wf ($$) {
+ my ($wf, $data) = @_;
+ my ($fh, $path) = @$wf;
+ print $fh $data or die "write $path.tmp: $!\n";
+}
+
+sub wf_abort ($) {
+ my ($wf) = @_;
+ my ($fh, $path) = @$wf;
+ close $fh;
+ unlink "$path.tmp" or die "remove $path.tmp: $!\n";
+}
+
+sub wf_done ($) {
+ my ($wf) = @_;
+ my ($fh, $path) = @$wf;
+ close $fh or die "finish writing $path.tmp: $!\n";
+ rename "$path.tmp", $path or die "install new $path: $!\n";
+}
+
+sub wf_contents ($$) {
+ my ($path,$contents) = @_;
+ my $wf = wf_start($path);
+ wf($wf, $contents);
+ wf_done($wf);
}
1;
~ian / topbloke.git / blobdiff