From 8ff13c6ba6cc3eb35ca92682634425e2229486a6 Mon Sep 17 00:00:00 2001
From: EuAndreh <eu@euandre.org>
Date: Tue, 28 Mar 2023 12:21:20 -0300
Subject: src/bin/paku.in: Add WIP version of Alpine support, based off of
 Debian

---
 src/bin/paku.in | 154 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 154 insertions(+)

(limited to 'src')

diff --git a/src/bin/paku.in b/src/bin/paku.in
index 3b2d221..e7c43f3 100755
--- a/src/bin/paku.in
+++ b/src/bin/paku.in
@@ -32,6 +32,7 @@ sub help($fh) {
 		  ACTION        what to emit, one of:
 		                - guix
 		                - debian
+		                - alpine
 		                - nix
 		                - html
 		                - guix-channel-key
@@ -499,6 +500,127 @@ sub emit_debian() {
 	print @targets;
 }
 
+sub emit_alpine() {
+	my $json = load_json();
+	my @apks    = ();
+	my @targets = ();
+
+	for my $pkg (@{$json->{packages}}) {
+		push @targets, <<~EOF;
+			\$(DIR)/tarballs/$pkg->{fname}:
+				mkdir -p \$(\@D)
+				wget -O \$\@ \\
+					'$pkg->{url}'
+
+			\$(DIR)/checkouts/$pkg->{name}-$pkg->{version}: \$(DIR)/tarballs/$pkg->{fname}
+				mkdir -p \$(\@D)
+				tar -C \$(\@D) -xf \$(DIR)/tarballs/$pkg->{fname}
+				touch \$\@
+
+			EOF
+
+
+		next if $pkg->{architectures} ne 'any';
+
+
+		my $deb_name = "$pkg->{name}_" . (
+			$pkg->{label} eq 'latest' ? 'latest' : $pkg->{version}
+		) . "_all.deb";
+		my $deb_path = "\$(DIR)/debian/$deb_name";
+
+		push @apks, "\t$deb_path \\\n";
+
+		my $ver = $pkg->{label} eq 'latest' ? '0.' . $pkg->{version} . '.latest' : $pkg->{version};
+		$ver =~ s/^v//;
+
+		push @targets, <<~EOF;
+			\$(DIR)/builddirs/$pkg->{name}-$pkg->{version}/DEBIAN: \$(DIR)/checkouts/$pkg->{name}-$pkg->{version}
+				\$(MAKE) \\
+					-C \$(DIR)/checkouts/$pkg->{name}-$pkg->{version} \\
+					install \\
+					PREFIX=/usr \\
+					DESTDIR="\$\$PWD"/\$(\@D)
+				mkdir -p \$\@
+				touch \$\@
+
+			\$(DIR)/builddirs/$pkg->{name}-$pkg->{version}/DEBIAN/control: \$(DIR)/builddirs/$pkg->{name}-$pkg->{version}/DEBIAN
+				printf '' > \$\@
+				printf 'Package: $pkg->{name}\\n'              >> \$\@
+				printf 'Version: $ver\\n'                      >> \$\@
+				printf 'Section: custom\\n'                    >> \$\@
+				printf 'Depends:\\n'                           >> \$\@
+				printf 'Priority: optional\\n'                 >> \$\@
+				printf 'Architecture: all\\n'                  >> \$\@
+				printf 'Essential: no\\n'                      >> \$\@
+
+				printf 'Maintainer: '                          >> \$\@
+				printf '$pkg->{"maintainer-b64"}' | base64 -d  >> \$\@
+				printf '\\n'                                   >> \$\@
+
+				printf 'Description: '                         >> \$\@
+				printf '$pkg->{"description-b64"}' | base64 -d >> \$\@
+				printf '\\n'                                   >> \$\@
+
+				printf '$pkg->{'long-description-b64'}' | \\
+					base64 -d |    \\
+					sed 's|^\$\$|.|' | \\
+					sed 's|^| |'                           >> \$\@
+				printf '\\n'                                   >> \$\@
+
+			\$(DIR)/builddirs/$pkg->{name}-$pkg->{version}.deb: \$(DIR)/builddirs/$pkg->{name}-$pkg->{version}/DEBIAN/control
+				dpkg-deb --build \$(DIR)/builddirs/$pkg->{name}-$pkg->{version}
+
+			$deb_path: \$(DIR)/builddirs/$pkg->{name}-$pkg->{version}.deb
+				mkdir -p \$(\@D)
+				cp \$(DIR)/builddirs/$pkg->{name}-$pkg->{version}.deb \$\@
+
+
+			EOF
+	}
+
+
+	print <<~EOF;
+		.POSIX:
+
+		DIR = $json->{datadir}
+
+		apks = \\
+		EOF
+
+	# print @apks, "\n";
+	print "\n\n";
+	print <<~EOF;
+		RSAKEY = '$json->{maintainer}{email}'
+
+
+		all: \$(DIR)/alpine/public/x86_64/APKINDEX.tar.gz \$(DIR)/alpine/public/\$(RSAKEY).rsa.pub
+
+		public-dir:
+			\@printf '\$(DIR)/alpine/public'
+
+
+		\$(DIR)/alpine/x86_64/APKINDEX: \$(apks)
+			mkdir -p \$(\@D) # FIXME
+			touch \$\@
+
+		\$(DIR)/alpine/x86_64/DESCRIPTION: \$(DIR)/alpine/x86_64/APKINDEX
+			echo xablau > \$\@
+
+		\$(DIR)/alpine/public/x86_64/APKINDEX.tar.gz: \$(DIR)/alpine/x86_64/APKINDEX \\
+				\$(DIR)/alpine/x86_64/DESCRIPTION
+			mkdir -p \$(\@D) # FIXME
+			tar -C \$(DIR)/alpine/x86_64 -cvf \$\@ APKINDEX DESCRIPTION
+
+
+		\$(DIR)/alpine/public/\$(RSAKEY).rsa.pub: \$(apks)
+			mkdir -p \$(\@D) # FIXME
+			gpg --export-ssh-key \$(RSAKEY) | ssh-keygen -f/dev/stdin -e -m pem > \$\@
+
+
+		EOF
+	# print @targets;
+}
+
 sub pascal_case($s) {
 	return join('', map(ucfirst, split '-', $s))
 }
@@ -640,6 +762,17 @@ sub emit_html() {
 		              </p>
 		              <pre><code># apt install $pkg->{name}$apt_suffix</code></pre>
 		            </section>
+		            <section>
+		              <h2>Alpine</h2>
+		              <p>
+		                After folowwing the
+		                <a href="#alpine-instructions">Alpine instructions</a>
+		                to include this repository to
+		                <code>/etc/apk/repositories</code>, you can
+		                install it:
+		              </p>
+		              <pre><code># apk add $pkg->{name}</code></pre>
+		            </section>
 		            <section>
 		              <h2>Nix</h2>
 		              <p>
@@ -723,6 +856,26 @@ sub emit_html() {
 		          be available.
 		        </p>
 		      </article>
+		      <article id="alpine-instructions">
+		        <h2>Alpine instructions</h2>
+		        <p>
+		          Get my public key used to sign the repository:
+		        </p>
+		        <pre><code>\$ wget -qO- $json->{'base-url'}/alpine/$json->{maintainer}{email}.rsa.pub |
+		    doas tee /etc/apk/keys/$json->{maintainer}{email}.rsa.pub</code></pre>
+		        <p>
+		          Then include this repository in the
+		          <code>apk-repositories(5)</code> list that
+		          <code>apk(8)</code> uses to retrive package files for
+		          installation:
+		        </p>
+		        <pre><code>\$ echo '$json->{'base-url'}/alpine' |
+		    doas tee -a /etc/apk/repositories</code></pre>
+		        <p>
+		          After that the packages frmo this repository will be
+		          available.
+		        </p>
+		      </article>
 		      <article id="nix-instructions">
 		        <h2>Nix instructions</h2>
 		        <p>
@@ -793,6 +946,7 @@ my %actions = (
 	guix               => \&emit_guix,
 	'guix-channel-key' => \&emit_guix_channel_key,
 	debian             => \&emit_debian,
+	alpine             => \&emit_alpine,
 	homebrew           => \&emit_homebrew,
 	html               => \&emit_html,
 );
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