Merge branch 'gp/avoid-explicit-mention-of-dot-git-refs'

diff --git a/perl/Git.pm b/perl/Git.pm
index 497f420178a73061901393f8c21a9feb17054b6d..a56d1e76f797cdba83510a5488945425f1936c2d 100644 (file)
--- a/perl/Git.pm
+++ b/perl/Git.pm
@@ -58,7 +58,8 @@ =head1 SYNOPSIS
                 command_output_pipe command_input_pipe command_close_pipe
                 command_bidi_pipe command_close_bidi_pipe
                 version exec_path html_path hash_object git_cmd_try
-                remote_refs
+                remote_refs prompt
+                get_tz_offset
                 temp_acquire temp_release temp_reset temp_path);
 
 
@@ -102,6 +103,7 @@ =head1 DESCRIPTION
 use Cwd qw(abs_path cwd);
 use IPC::Open2 qw(open2);
 use Fcntl qw(SEEK_SET SEEK_CUR);
+use Time::Local qw(timegm);
 }
 
 
@@ -512,6 +514,79 @@ sub version {
 sub html_path { command_oneline('--html-path') }
 
 
+=item get_tz_offset ( TIME )
+
+Return the time zone offset from GMT in the form +/-HHMM where HH is
+the number of hours from GMT and MM is the number of minutes.  This is
+the equivalent of what strftime("%z", ...) would provide on a GNU
+platform.
+
+If TIME is not supplied, the current local time is used.
+
+=cut
+
+sub get_tz_offset {
+       # some systmes don't handle or mishandle %z, so be creative.
+       my $t = shift || time;
+       my $gm = timegm(localtime($t));
+       my $sign = qw( + + - )[ $gm <=> $t ];
+       return sprintf("%s%02d%02d", $sign, (gmtime(abs($t - $gm)))[2,1]);
+}
+
+
+=item prompt ( PROMPT , ISPASSWORD  )
+
+Query user C<PROMPT> and return answer from user.
+
+Honours GIT_ASKPASS and SSH_ASKPASS environment variables for querying
+the user. If no *_ASKPASS variable is set or an error occoured,
+the terminal is tried as a fallback.
+If C<ISPASSWORD> is set and true, the terminal disables echo.
+
+=cut
+
+sub prompt {
+       my ($prompt, $isPassword) = @_;
+       my $ret;
+       if (exists $ENV{'GIT_ASKPASS'}) {
+               $ret = _prompt($ENV{'GIT_ASKPASS'}, $prompt);
+       }
+       if (!defined $ret && exists $ENV{'SSH_ASKPASS'}) {
+               $ret = _prompt($ENV{'SSH_ASKPASS'}, $prompt);
+       }
+       if (!defined $ret) {
+               print STDERR $prompt;
+               STDERR->flush;
+               if (defined $isPassword && $isPassword) {
+                       require Term::ReadKey;
+                       Term::ReadKey::ReadMode('noecho');
+                       $ret = '';
+                       while (defined(my $key = Term::ReadKey::ReadKey(0))) {
+                               last if $key =~ /[\012\015]/; # \n\r
+                               $ret .= $key;
+                       }
+                       Term::ReadKey::ReadMode('restore');
+                       print STDERR "\n";
+                       STDERR->flush;
+               } else {
+                       chomp($ret = <STDIN>);
+               }
+       }
+       return $ret;
+}
+
+sub _prompt {
+       my ($askpass, $prompt) = @_;
+       return unless length $askpass;
+       $prompt =~ s/\n/ /g;
+       my $ret;
+       open my $fh, "-|", $askpass, $prompt or return;
+       $ret = <$fh>;
+       $ret =~ s/[\015\012]//g; # strip \r\n, chomp does not work on all systems (i.e. windows) as expected
+       close ($fh);
+       return $ret;
+}
+
 =item repo_path ()
 
 Return path to the git repository. Must be called on a repository instance.