Make some perl scripts output to stdout

And only generate one output "file" at a time for objects.pl
Reviewed-by: NRichard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5432)

Configurations/unix-Makefile.tmpl

@@ -651,13 +651,18 @@ generate_crypto_bn:
 	( cd $(SRCDIR); $(PERL) crypto/bn/bn_prime.pl > crypto/bn/bn_prime.h )
 
 generate_crypto_objects:
+	( cd $(SRCDIR); $(PERL) crypto/objects/objects.pl -n \
+				crypto/objects/objects.txt \
+				crypto/objects/obj_mac.num \
+				> crypto/objects/obj_mac.new && \
+	    mv crypto/objects/obj_mac.new crypto/objects/obj_mac.num )
 	( cd $(SRCDIR); $(PERL) crypto/objects/objects.pl \
 				crypto/objects/objects.txt \
 				crypto/objects/obj_mac.num \
-				include/openssl/obj_mac.h )
+				> include/openssl/obj_mac.h )
 	( cd $(SRCDIR); $(PERL) crypto/objects/obj_dat.pl \
 				include/openssl/obj_mac.h \
-				crypto/objects/obj_dat.h )
+				> crypto/objects/obj_dat.h )
 	( cd $(SRCDIR); $(PERL) crypto/objects/objxref.pl \
 				crypto/objects/obj_mac.num \
 				crypto/objects/obj_xref.txt \

crypto/objects/obj_dat.pl

@@ -152,8 +152,7 @@ for (my $i = 0; $i < $n; $i++) {
 }
 
 # Finally ready to generate the output.
-open(OUT, ">$ARGV[1]") || die "Can't open output file $ARGV[1], $!";
-print OUT <<"EOF";
+print <<"EOF";
 /*
  * WARNING: do not edit!
  * Generated by crypto/objects/obj_dat.pl
@@ -167,44 +166,44 @@ print OUT <<"EOF";
 
 EOF
 
-print OUT "/* Serialized OID's */\n";
-printf OUT "static const unsigned char so[%d] = {\n", $lvalues + 1;
-print OUT @lvalues;
-print OUT "};\n\n";
+print "/* Serialized OID's */\n";
+printf "static const unsigned char so[%d] = {\n", $lvalues + 1;
+print @lvalues;
+print "};\n\n";
 
-printf OUT "#define NUM_NID %d\n", $n;
-printf OUT "static const ASN1_OBJECT nid_objs[NUM_NID] = {\n";
-print OUT @out;
-print  OUT "};\n\n";
+printf "#define NUM_NID %d\n", $n;
+printf "static const ASN1_OBJECT nid_objs[NUM_NID] = {\n";
+print @out;
+print  "};\n\n";
 
 {
     no warnings "uninitialized";
     @a = grep(defined $sn{$nid{$_}}, 0 .. $n);
 }
-printf OUT "#define NUM_SN %d\n", $#a + 1;
-printf OUT "static const unsigned int sn_objs[NUM_SN] = {\n";
+printf "#define NUM_SN %d\n", $#a + 1;
+printf "static const unsigned int sn_objs[NUM_SN] = {\n";
 foreach (sort { $sn{$nid{$a}} cmp $sn{$nid{$b}} } @a) {
-    printf OUT "    %4d,    /* \"$sn{$nid{$_}}\" */\n", $_;
+    printf "    %4d,    /* \"$sn{$nid{$_}}\" */\n", $_;
 }
-print  OUT "};\n\n";
+print  "};\n\n";
 
 {
     no warnings "uninitialized";
     @a = grep(defined $ln{$nid{$_}}, 0 .. $n);
 }
-printf OUT "#define NUM_LN %d\n", $#a + 1;
-printf OUT "static const unsigned int ln_objs[NUM_LN] = {\n";
+printf "#define NUM_LN %d\n", $#a + 1;
+printf "static const unsigned int ln_objs[NUM_LN] = {\n";
 foreach (sort { $ln{$nid{$a}} cmp $ln{$nid{$b}} } @a) {
-    printf OUT "    %4d,    /* \"$ln{$nid{$_}}\" */\n", $_;
+    printf "    %4d,    /* \"$ln{$nid{$_}}\" */\n", $_;
 }
-print  OUT "};\n\n";
+print  "};\n\n";
 
 {
     no warnings "uninitialized";
     @a = grep(defined $obj{$nid{$_}}, 0 .. $n);
 }
-printf OUT "#define NUM_OBJ %d\n", $#a + 1;
-printf OUT "static const unsigned int obj_objs[NUM_OBJ] = {\n";
+printf "#define NUM_OBJ %d\n", $#a + 1;
+printf "static const unsigned int obj_objs[NUM_OBJ] = {\n";
 
 # Compare DER; prefer shorter; if some length, use the "smaller" encoding.
 sub obj_cmp
@@ -224,8 +223,6 @@ foreach (sort obj_cmp @a) {
     my $v = $objd{$m};
     $v =~ s/L//g;
     $v =~ s/,/ /g;
-    printf OUT "    %4d,    /* %-32s %s */\n", $_, $m, $v;
+    printf "    %4d,    /* %-32s %s */\n", $_, $m, $v;
 }
-print  OUT "};\n";
-
-close OUT;
+print  "};\n";

crypto/objects/objects.pl

@@ -6,7 +6,12 @@
 # in the file LICENSE in the source distribution or at
 # https://www.openssl.org/source/license.html
 
-# Output year depends on the year of the script and the input files.
+use Getopt::Std;
+
+our($opt_n);
+getopts('n');
+
+# Output year depends on the year of the script and the input file.
 my $YEAR = [localtime([stat($0)]->[9])]->[5] + 1900;
 my $iYEAR = [localtime([stat($ARGV[0])]->[9])]->[5] + 1900;
 $YEAR = $iYEAR if $iYEAR > $YEAR;
@@ -123,15 +128,15 @@ print STDERR "Added OID $Cname\n";
 	}
 close IN;
 
-open (NUMOUT,">$ARGV[1]") || die "Can't open output file $ARGV[1]";
-foreach (sort { $a <=> $b } keys %nidn)
-	{
-	print NUMOUT $nidn{$_},"\t\t",$_,"\n";
-	}
-close NUMOUT;
+if ( $opt_n ) {
+    foreach (sort { $a <=> $b } keys %nidn)
+            {
+            print $nidn{$_},"\t\t",$_,"\n";
+            }
+    exit;
+}
 
-open (OUT,">$ARGV[2]") || die "Can't open output file $ARGV[2]";
-print OUT <<"EOF";
+print <<"EOF";
 /*
  * WARNING: do not edit!
  * Generated by crypto/objects/objects.pl
@@ -161,15 +166,13 @@ sub expand
 foreach (sort { $a <=> $b } keys %ordern)
 	{
 	$Cname=$ordern{$_};
-	print OUT "\n";
-	print OUT expand("#define SN_$Cname\t\t\"$sn{$Cname}\"\n") if $sn{$Cname} ne "";
-	print OUT expand("#define LN_$Cname\t\t\"$ln{$Cname}\"\n") if $ln{$Cname} ne "";
-	print OUT expand("#define NID_$Cname\t\t$nid{$Cname}\n") if $nid{$Cname} ne "";
-	print OUT expand("#define OBJ_$Cname\t\t$obj{$Cname}\n") if $obj{$Cname} ne "";
+	print "\n";
+	print expand("#define SN_$Cname\t\t\"$sn{$Cname}\"\n") if $sn{$Cname} ne "";
+	print expand("#define LN_$Cname\t\t\"$ln{$Cname}\"\n") if $ln{$Cname} ne "";
+	print expand("#define NID_$Cname\t\t$nid{$Cname}\n") if $nid{$Cname} ne "";
+	print expand("#define OBJ_$Cname\t\t$obj{$Cname}\n") if $obj{$Cname} ne "";
 	}
 
-close OUT;
-
 sub process_oid
 	{
 	local($oid)=@_;