scripts/sphinx-pre-install: seek for Noto CJK fonts for pdf output

The translations guide need Noto CJK fonts. So, add a logic that
would suggest its install for distros.

It also fix a few other issues while testing the script
with several distributions.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
diff --git a/scripts/sphinx-pre-install b/scripts/sphinx-pre-install
index 0a5c83a..3b638c0 100755
--- a/scripts/sphinx-pre-install
+++ b/scripts/sphinx-pre-install
@@ -345,6 +345,9 @@
 	if ($pdf) {
 		check_missing_file("/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf",
 				   "fonts-dejavu", 2);
+
+		check_missing_file("/usr/share/fonts/noto-cjk/NotoSansCJK-Regular.ttc",
+				   "fonts-noto-cjk", 2);
 	}
 
 	check_program("dvipng", 2) if ($pdf);
@@ -374,6 +377,7 @@
 	my @fedora_tex_pkgs = (
 		"texlive-collection-fontsrecommended",
 		"texlive-collection-latex",
+		"texlive-xecjk",
 		"dejavu-sans-fonts",
 		"dejavu-serif-fonts",
 		"dejavu-sans-mono-fonts",
@@ -408,6 +412,11 @@
 		$pdf = 0;
 	}
 
+	if ($pdf) {
+		check_missing_file("/usr/share/fonts/google-noto-cjk/NotoSansCJK-Regular.ttc",
+				   "google-noto-sans-cjk-ttc-fonts", 2);
+	}
+
 	check_rpm_missing(\@fedora26_opt_pkgs, 2) if ($pdf && !$old);
 	check_rpm_missing(\@fedora_tex_pkgs, 2) if ($pdf);
 	check_missing_tex(2) if ($pdf);
@@ -456,6 +465,11 @@
 
 	$map{"latexmk"} = "texlive-latexmk-bin";
 
+	# FIXME: add support for installing CJK fonts
+	#
+	# I tried hard, but was unable to find a way to install
+	# "Noto Sans CJK SC" on openSUSE
+
 	check_rpm_missing(\@suse_tex_pkgs, 2) if ($pdf);
 	check_missing_tex(2) if ($pdf);
 	check_missing(\%map);
@@ -483,6 +497,11 @@
 
 	$map{"latexmk"} = "texlive-collection-basic";
 
+	if ($pdf) {
+		check_missing_file("/usr/share/fonts/google-noto-cjk/NotoSansCJK-Regular.ttc",
+				   "google-noto-sans-cjk-ttc-fonts", 2);
+	}
+
 	check_rpm_missing(\@tex_pkgs, 2) if ($pdf);
 	check_missing(\%map);
 
@@ -508,6 +527,11 @@
 	);
 	check_pacman_missing(\@archlinux_tex_pkgs, 2) if ($pdf);
 
+	if ($pdf) {
+		check_missing_file("/usr/share/fonts/noto-cjk/NotoSansCJK-Regular.ttc",
+				   "noto-fonts-cjk", 2);
+	}
+
 	check_missing(\%map);
 
 	return if (!$need && !$optional);
@@ -528,6 +552,11 @@
 	check_missing_file("/usr/share/fonts/dejavu/DejaVuSans.ttf",
 			   "media-fonts/dejavu", 2) if ($pdf);
 
+	if ($pdf) {
+		check_missing_file("/usr/share/fonts/noto-cjk/NotoSansCJKsc-Regular.otf",
+				   "media-fonts/noto-cjk", 2);
+	}
+
 	check_missing(\%map);
 
 	return if (!$need && !$optional);