[PATCH 2/2] git-svn, perl/Git.pm: extend and use Git->prompt method for querying users

[Sven Strickroth <sven.strickroth@tu-clausthal.de>]

git-svn reads usernames and other user queries from an interactive
terminal. This cause GUIs (w/o STDIN connected) to hang waiting forever
for git-svn to complete (http://code.google.com/p/tortoisegit/issues/detail?id=967).

This change extends the Git->prompt method, so that it can also be used
for non password queries, and makes use of it instead of using
hand-rolled prompt-response code that only works with the interactive
terminal.

Signed-off-by: Sven Strickroth <email@cs-ware.de>
---
 git-svn.perl |   16 +++++-----------
 perl/Git.pm  |   25 +++++++++++++++----------
 2 files changed, 20 insertions(+), 21 deletions(-)

diff --git a/git-svn.perl b/git-svn.perl
index bcee8aa..1f30dc2 100755
--- a/git-svn.perl
+++ b/git-svn.perl
@@ -4357,11 +4357,10 @@ sub ssl_server_trust {
 	                               issuer_dname fingerprint);
 	my $choice;
 prompt:
-	print STDERR $may_save ?
+	my $options = $may_save ?
 	      "(R)eject, accept (t)emporarily or accept (p)ermanently? " :
 	      "(R)eject or accept (t)emporarily? ";
-	STDERR->flush;
-	$choice = lc(substr(<STDIN> || 'R', 0, 1));
+	$choice = substr(Git->prompt("Certificate unknown. " . $options) || 'R', 0, 1);
 	if ($choice =~ /^t$/i) {
 		$cred->may_save(undef);
 	} elsif ($choice =~ /^r$/i) {
@@ -4378,10 +4377,7 @@ prompt:
 sub ssl_client_cert {
 	my ($cred, $realm, $may_save, $pool) = @_;
 	$may_save = undef if $_no_auth_cache;
-	print STDERR "Client certificate filename: ";
-	STDERR->flush;
-	chomp(my $filename = <STDIN>);
-	$cred->cert_file($filename);
+	$cred->cert_file(Git->prompt("Client certificate filename: "));
 	$cred->may_save($may_save);
 	$SVN::_Core::SVN_NO_ERROR;
 }
@@ -4404,9 +4400,7 @@ sub username {
 	if (defined $_username) {
 		$username = $_username;
 	} else {
-		print STDERR "Username: ";
-		STDERR->flush;
-		chomp($username = <STDIN>);
+		$username = Git->prompt("Username: ");
 	}
 	$cred->username($username);
 	$cred->may_save($may_save);
@@ -4415,7 +4409,7 @@ sub username {

 sub _read_password {
 	my ($prompt, $realm) = @_;
-	my $password = Git->prompt($prompt);
+	my $password = Git->prompt($prompt, 1);
 	$password;
 }

diff --git a/perl/Git.pm b/perl/Git.pm
index b1c7c50..62b824c 100644
--- a/perl/Git.pm
+++ b/perl/Git.pm
@@ -512,18 +512,19 @@ C<git --html-path>). Useful mostly only internally.
 sub html_path { command_oneline('--html-path') }


-=item prompt ( PROMPT )
+=item prompt ( PROMPT , ISPASSWORD )

 Query user C<PROMPT> and return answer from user.

 Check if GIT_ASKPASS or SSH_ASKPASS is set, use first matching for querying
 user and return answer. If no *_ASKPASS variable is set, the variable is
 empty 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 ($self, $prompt) = _maybe_self(@_);
+	my ($self, $prompt, $isPassword) = _maybe_self(@_);
 	my $ret;
 	if (exists $ENV{'GIT_ASKPASS'}) {
 		$ret = _prompt($ENV{'GIT_ASKPASS'}, $prompt);
@@ -534,15 +535,19 @@ sub prompt {
 	if (!defined $ret) {
 		print STDERR $prompt;
 		STDERR->flush;
-		require Term::ReadKey;
-		Term::ReadKey::ReadMode('noecho');
-		while (defined(my $key = Term::ReadKey::ReadKey(0))) {
-			last if $key =~ /[\012\015]/; # \n\r
-			$ret .= $key;
+		if (defined $isPassword && $isPassword) {
+			require Term::ReadKey;
+			Term::ReadKey::ReadMode('noecho');
+			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>);
 		}
-		Term::ReadKey::ReadMode('restore');
-		print STDERR "\n";
-		STDERR->flush;
 	}
 	return $ret;
 }
-- 
Best regards,
 Sven Strickroth
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