avoid IO::File for anonymous temporary files

We do not need to import IO::File into the main programs
since Perl 5.8+ supports literal "undef" for generating
anonymous temporary file handles.

4 files changed, 9 insertions, 11 deletions

diff --git a/lib/PublicInbox/GitHTTPBackend.pm b/lib/PublicInbox/GitHTTPBackend.pm
index 322005b5..1987a013 100644
--- a/lib/PublicInbox/GitHTTPBackend.pm
+++ b/lib/PublicInbox/GitHTTPBackend.pm
@@ -7,7 +7,7 @@ package PublicInbox::GitHTTPBackend;
 use strict;
 use warnings;
 use Fcntl qw(:seek);
-use IO::File;
+use IO::Handle;
 use HTTP::Date qw(time2str);
 use HTTP::Status qw(status_message);
 use Plack::Util;
@@ -272,7 +272,7 @@ sub serve_smart {
 
 sub input_to_file {
         my ($env) = @_;
-        my $in = IO::File->new_tmpfile;
+        open(my $in, '+>', undef);
         unless (defined $in) {
                 err($env, "could not open temporary file: $!");
                 return;
diff --git a/lib/PublicInbox/HTTP.pm b/lib/PublicInbox/HTTP.pm
index 729d46fb..cac14be3 100644
--- a/lib/PublicInbox/HTTP.pm
+++ b/lib/PublicInbox/HTTP.pm
@@ -17,7 +17,7 @@ use Plack::HTTPParser qw(parse_http_request); # XS or pure Perl
 use HTTP::Status qw(status_message);
 use HTTP::Date qw(time2str);
 use Scalar::Util qw(weaken);
-use IO::File;
+use IO::Handle;
 use constant {
         CHUNK_START => -1,   # [a-f0-9]+\r\n
         CHUNK_END => -2,     # \r\n
@@ -43,7 +43,7 @@ sub process_pipelineq () {
 our $MAX_REQUEST_BUFFER = $ENV{GIT_HTTP_MAX_REQUEST_BUFFER} ||
                         (10 * 1024 * 1024);
 
-my $null_io = IO::File->new('/dev/null', '<');
+open(my $null_io, '<', '/dev/null') or die "failed to open /dev/null: $!";
 my $http_date;
 my $prev = 0;
 sub http_date () {
@@ -335,10 +335,10 @@ sub input_prepare {
                         quit($self, 413);
                         return;
                 }
-                $input = IO::File->new_tmpfile;
+                open($input, '+>', undef);
         } elsif (env_chunked($env)) {
                 $len = CHUNK_START;
-                $input = IO::File->new_tmpfile;
+                open($input, '+>', undef);
         }
 
         # TODO: expire idle clients on ENFILE / EMFILE
diff --git a/lib/PublicInbox/Spamcheck/Spamc.pm b/lib/PublicInbox/Spamcheck/Spamc.pm
index 5190c269..30eec95c 100644
--- a/lib/PublicInbox/Spamcheck/Spamc.pm
+++ b/lib/PublicInbox/Spamcheck/Spamc.pm
@@ -4,7 +4,7 @@ package PublicInbox::Spamcheck::Spamc;
 use strict;
 use warnings;
 use PublicInbox::Spawn qw(popen_rd spawn);
-use IO::File;
+use IO::Handle;
 use Fcntl qw(:DEFAULT SEEK_SET);
 
 sub new {
@@ -72,13 +72,12 @@ sub _devnull {
 
 sub _msg_to_fd {
         my ($self, $msg, $tmpref) = @_;
-        my $tmpfh;
         my $fd;
         if (my $ref = ref($msg)) {
                 my $fileno = eval { fileno($msg) };
                 return $fileno if defined $fileno;
 
-                $tmpfh = IO::File->new_tmpfile;
+                open(my $tmpfh, '+>', undef) or die "failed to open: $!";
                 $tmpfh->autoflush(1);
                 $msg = \($msg->as_string) if $ref ne 'SCALAR';
                 print $tmpfh $$msg or die "failed to print: $!";
diff --git a/t/httpd-corner.t b/t/httpd-corner.t
index 1e8465c2..8a0337c2 100644
--- a/t/httpd-corner.t
+++ b/t/httpd-corner.t
@@ -243,7 +243,6 @@ my $check_self = sub {
 
 SKIP: {
         use POSIX qw(dup2);
-        use IO::File;
         my $have_curl = 0;
         foreach my $p (split(':', $ENV{PATH})) {
                 -x "$p/curl" or next;
@@ -255,7 +254,7 @@ SKIP: {
         my $url = 'http://' . $sock->sockhost . ':' . $sock->sockport . '/sha1';
         my ($r, $w);
         pipe($r, $w) or die "pipe: $!";
-        my $tout = IO::File->new_tmpfile or die "new_tmpfile: $!";
+        open(my $tout, '+>', undef) or die "open temporary file: $!";
         my $pid = fork;
         defined $pid or die "fork: $!";
         my @cmd = (qw(curl --tcp-nodelay --no-buffer -T- -HExpect: -sS), $url);