Dgit.pm: git_slurp_config_src: Break out from dgit

[dgit.git] / Debian / Dgit.pm

diff --git a/Debian/Dgit.pm b/Debian/Dgit.pm
index 5b5591d5499695def37c47f023a00f854bfa1738..3d97848ff2df75b96491a8fc2ac2d6bd5224a86a 100644 (file)
--- a/Debian/Dgit.pm
+++ b/Debian/Dgit.pm
@@ -29,6 +29,7 @@ use Config;
 use Digest::SHA;
 use Data::Dumper;
 use IPC::Open2;
+use File::Path;
 
 BEGIN {
     use Exporter   ();
@@ -55,7 +56,10 @@ BEGIN {
                       initdebug enabledebug enabledebuglevel
                       printdebug debugcmd
                       $debugprefix *debuglevel *DEBUG
-                      shellquote printcmd messagequote);
+                      shellquote printcmd messagequote
+                      $negate_harmful_gitattrs
+                     git_slurp_config_src
+                      workarea_setup);
     # implicitly uses $main::us
     %EXPORT_TAGS = ( policyflags => [qw(NOFFCHECK FRESHREPO NOCOMMITCHECK)] );
     @EXPORT_OK   = @{ $EXPORT_TAGS{policyflags} };
@@ -82,6 +86,8 @@ sub NOCOMMITCHECK () { return 0x8; }
 our $debugprefix;
 our $debuglevel = 0;
 
+our $negate_harmful_gitattrs = "-text -eol -crlf -ident -filter";
+
 our $forkcheck_mainprocess;
 
 sub forkcheck_setup () {
@@ -412,4 +418,50 @@ sub is_fast_fwd ($$) {
     }
 }
 
+sub git_slurp_config_src ($) {
+    my ($src) = @_;
+    # returns $r such that $r->{KEY}[] = VALUE
+    my @cmd = (qw(git config -z --get-regexp), "--$src", qw(.*));
+    debugcmd "|",@cmd;
+
+    local ($debuglevel) = $debuglevel-2;
+    local $/="\0";
+
+    my $r = { };
+    open GITS, "-|", @cmd or die $!;
+    while (<GITS>) {
+       chomp or die;
+       printdebug "=> ", (messagequote $_), "\n";
+       m/\n/ or die "$_ ?";
+       push @{ $r->{$`} }, $'; #';
+    }
+    $!=0; $?=0;
+    close GITS
+       or ($!==0 && $?==256)
+       or failedcmd @cmd;
+    return $r;
+}
+
+sub workarea_setup ($) {
+    # for use in the workarea
+    my ($t_local_git_cfg) = @_;
+    # should be run in a directory .git/FOO/BAR of a working tree
+    runcmd qw(git init -q);
+    runcmd qw(git config gc.auto 0);
+    foreach my $copy (qw(user.email user.name user.useConfigOnly
+                         core.sharedRepository
+                         core.compression core.looseCompression
+                         core.bigFileThreshold core.fsyncObjectFiles)) {
+       my $v = $t_local_git_cfg->{$copy};
+       next unless $v;
+       runcmd qw(git config), $copy, $_ foreach @$v;
+    }
+    rmtree('.git/objects');
+    symlink '../../../../objects','.git/objects' or die $!;
+    ensuredir '.git/info';
+    open GA, "> .git/info/attributes" or die $!;
+    print GA "* $negate_harmful_gitattrs\n" or die $!;
+    close GA or die $!;
+}
+
 1;