[pkgsrc/trunk]: pkgsrc/pkgtools/url2pkg/files pkgtools/url2pkg: refactor gene...

[rillig <rillig%pkgsrc.org@localhost>]

details:   https://anonhg.NetBSD.org/pkgsrc/rev/90846064385a
branches:  trunk
changeset: 399870:90846064385a
user:      rillig <rillig%pkgsrc.org@localhost>
date:      Sun Aug 18 06:10:38 2019 +0000

description:
pkgtools/url2pkg: refactor generation of Makefiles

By generating the content of the files before actually writing it to
disk, the code becomes easier to test.

diffstat:

 pkgtools/url2pkg/files/url2pkg.pl |  74 +++++++++++++++++++++++---------------
 1 files changed, 44 insertions(+), 30 deletions(-)

diffs (164 lines):

diff -r 0abd7b34f2e6 -r 90846064385a pkgtools/url2pkg/files/url2pkg.pl
--- a/pkgtools/url2pkg/files/url2pkg.pl Sun Aug 18 05:54:42 2019 +0000
+++ b/pkgtools/url2pkg/files/url2pkg.pl Sun Aug 18 06:10:38 2019 +0000
@@ -1,5 +1,5 @@
 #! @PERL@
-# $NetBSD: url2pkg.pl,v 1.48 2019/08/18 05:47:53 rillig Exp $
+# $NetBSD: url2pkg.pl,v 1.49 2019/08/18 06:10:38 rillig Exp $
 #
 
 # Copyright (c) 2010 The NetBSD Foundation, Inc.
@@ -65,26 +65,26 @@
        return $ENV{"PKGMAINTAINER"} || $ENV{"REPLYTO"} || "INSERT_YOUR_MAIL_ADDRESS_HERE";
 }
 
-sub print_section($$) {
-       my ($f, $vars) = @_;
+sub add_section($$) {
+       my ($lines, $vars) = @_;
 
        return if scalar(@$vars) == 0;
 
        my $width = 0;
        foreach my $var (@{$vars}) {
-               next if $var->[1] eq "";
-               my $varname = $var->[0];
-               my $len = (length("$varname= ") + 7) & -8;
+               my ($name, $value) = @$var;
+               next if $value eq "";
+               my $len = (length("$name= ") + 7) & -8;
                $width = ($len > $width) ? $len : $width;
        }
 
        foreach my $var (@{$vars}) {
-               next if $var->[1] eq "";
-               my ($varname, $varvalue) = @$var;
-               my $ntabs = ($width - length("$varname=") + 7) / 8;
-               printf $f ("%s=%s%s\n", $varname, "\t" x $ntabs, $varvalue);
+               my ($name, $value) = @$var;
+               next if $value eq "";
+               my $tabs = "\t" x (($width - length("$name=") + 7) / 8);
+               push(@$lines, "$name=$tabs$value");
        }
-       printf $f ("\n");
+       push(@$lines, "");
 }
 
 # The following magic_* subroutines are called after the distfiles have
@@ -371,15 +371,15 @@
        `pwd` =~ qr".*/([^/]+)/[^/]+$" or die;
        $categories = $1;
 
-       open(MF, ">", "Makefile") or die;
-       print MF ("# \$" . "NetBSD\$\n");
-       print MF ("\n");
-
        if ($extract_sufx eq ".tar.gz" || $extract_sufx eq ".gem") {
                $extract_sufx = "";
        }
 
-       print_section(*MF, [
+       my @lines;
+       push(@lines, "# \$" . "NetBSD\$");
+       push(@lines, "");
+
+       add_section(\@lines, [
                ["GITHUB_PROJECT", $github_project],
                ["DISTNAME", $distname],
                ["CATEGORIES", $categories],
@@ -389,15 +389,20 @@
                ["DIST_SUBDIR", $dist_subdir],
        ]);
 
-       print_section(*MF, [
+       add_section(\@lines, [
                ["MAINTAINER", get_maintainer()],
                ["HOMEPAGE", $homepage],
                ["COMMENT", "TODO: Short description of the package"],
                ["#LICENSE", "# TODO: (see mk/license.mk)"],
        ]);
 
-       print MF ("# url2pkg-marker (please do not remove this line.)\n");
-       print MF (".include \"../../mk/bsd.pkg.mk\"\n");
+       push(@lines, "# url2pkg-marker (please do not remove this line.)");
+       push(@lines, ".include \"../../mk/bsd.pkg.mk\"");
+
+       open(MF, ">", "Makefile") or die;
+       foreach my $line (@lines) {
+               print MF "$line\n";
+       }
        close(MF) or die;
 }
 
@@ -470,28 +475,30 @@
 
        print("url2pkg> Adjusting the Makefile.\n");
 
+       my @lines;
+
        open(MF1, "<", "Makefile") or die;
-       open(MF2, ">", "Makefile-url2pkg.new") or die;
 
        # Copy the user-edited part of the Makefile.
        while (defined(my $line = <MF1>)) {
+               chomp($line);
+
                if ($line =~ qr"^# url2pkg-marker\b") {
                        $seen_marker = true;
                        last;
                }
-               print MF2 ($line);
+               push(@lines, $line);
 
-               # Note: This is not elegant, but works.
                if (defined($pkgname) && $line =~ qr"^DISTNAME=(\t+)") {
-                       print MF2 ("PKGNAME=$1${pkgname}\n");
+                       push(@lines, "PKGNAME=$1$pkgname");
                }
        }
 
        if (@todo) {
                foreach my $todo (@todo) {
-                       print MF2 ("# TODO: ${todo}\n");
+                       push(@lines, "# TODO: $todo");
                }
-               print MF2 ("\n");
+               push(@lines, "");
        }
 
        my @depend_vars;
@@ -501,22 +508,29 @@
        foreach my $dep (@depends) {
                push(@depend_vars, ["DEPENDS+", $dep]);
        }
-       print_section(*MF2, \@depend_vars);
+       add_section(\@lines, \@depend_vars);
 
-       print_section(*MF2, \@build_vars);
-       print_section(*MF2, \@extra_vars);
+       add_section(\@lines, \@build_vars);
+       add_section(\@lines, \@extra_vars);
 
        foreach my $f (@includes) {
-               print MF2 (".include \"${f}\"\n");
+               push(@lines, ".include \"$f\"");
        }
 
        # Copy the rest of the user-edited part of the Makefile.
        while (defined(my $line = <MF1>)) {
-               print MF2 ($line);
+               chomp($line);
+               push(@lines, $line);
        }
 
        close(MF1);
+
+       open(MF2, ">", "Makefile-url2pkg.new") or die;
+       foreach my $line (@lines) {
+               print MF2 "$line\n";
+       }
        close(MF2) or die;
+
        if ($seen_marker) {
                rename("Makefile-url2pkg.new", "Makefile") or die;
        } else {