git-remote-mediawiki: put long code into a subroutine

Signed-off-by: Célestin Matte <celestin.matte@ensimag.fr>
Signed-off-by: Matthieu Moy <matthieu.moy@grenoble-inp.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

contrib/mw-to-git/git-remote-mediawiki.perl

@@ -122,32 +122,10 @@
 $wiki_name =~ s/^.*@//;
 
 # Commands parser
-my @cmd;
 while (<STDIN>) {
 	chomp;
-	@cmd = split(/ /);
-	if (defined($cmd[0])) {
-		# Line not blank
-		if ($cmd[0] eq "capabilities") {
-			die("Too many arguments for capabilities\n") if (defined($cmd[1]));
-			mw_capabilities();
-		} elsif ($cmd[0] eq "list") {
-			die("Too many arguments for list\n") if (defined($cmd[2]));
-			mw_list($cmd[1]);
-		} elsif ($cmd[0] eq "import") {
-			die("Invalid arguments for import\n") if ($cmd[1] eq "" || defined($cmd[2]));
-			mw_import($cmd[1]);
-		} elsif ($cmd[0] eq "option") {
-			die("Too many arguments for option\n") if ($cmd[1] eq "" || $cmd[2] eq "" || defined($cmd[3]));
-			mw_option($cmd[1],$cmd[2]);
-		} elsif ($cmd[0] eq "push") {
-			mw_push($cmd[1]);
-		} else {
-			print STDERR "Unknown command. Aborting...\n";
-			last;
-		}
-	} else {
-		# blank line: we should terminate
+
+	if (!parse_command($_)) {
 		last;
 	}
 
@@ -157,6 +135,36 @@
 
 ########################## Functions ##############################
 
+sub parse_command {
+	my ($line) = @_;
+	my @cmd = split(/ /, $line);
+	if (!defined $cmd[0]) {
+		return 0;
+	}
+	if ($cmd[0] eq "capabilities") {
+		die("Too many arguments for capabilities\n")
+		    if (defined($cmd[1]));
+		mw_capabilities();
+	} elsif ($cmd[0] eq "list") {
+		die("Too many arguments for list\n") if (defined($cmd[2]));
+		mw_list($cmd[1]);
+	} elsif ($cmd[0] eq "import") {
+		die("Invalid arguments for import\n")
+		    if ($cmd[1] eq "" || defined($cmd[2]));
+		mw_import($cmd[1]);
+	} elsif ($cmd[0] eq "option") {
+		die("Too many arguments for option\n")
+		    if ($cmd[1] eq "" || $cmd[2] eq "" || defined($cmd[3]));
+		mw_option($cmd[1],$cmd[2]);
+	} elsif ($cmd[0] eq "push") {
+		mw_push($cmd[1]);
+	} else {
+		print STDERR "Unknown command. Aborting...\n";
+		return 0;
+	}
+	return 1;
+}
+
 # MediaWiki API instance, created lazily.
 my $mediawiki;