compile-sass.sh

#!/bin/bash
#
# This script compiles site's SASS into CSS
# It requires either the presence of `sass` command (which will be tried first)
# or the CSS::Sass Perl 5 module: https://metacpan.org/pod/CSS::Sass
#

if [ command -v sass >/dev/null 2>&1 ] ; then
	sass -t compressed assets/sass/style.scss:html/css/style.css &&
	echo "Successfully compiled SASS using 'sass' command" ||
	{ echo "Failed to compile SASS with 'sass' command"; exit 1 };
elif [ perl -MCSS::Sass -e '' >/dev/null 2>&1 ] ; then
	perl -MData::Dumper -MCSS::Sass -wlE '
		my ($css, $err, $stats) = CSS::Sass::sass_compile_file(
			"assets/sass/style.scss",
			output_style => SASS_STYLE_COMPRESSED
		);
		if (defined $err) {
			print Dumper $stats;
			say "Failed to compile sass (see diagnostics above)";
			exit 1
		};
		my $f = "html/css/style.css";
		open my $fh, ">", $f or
			die "Failed to open $f to write CSS into: $!";
		print $fh $css;
	' && echo "Successfully compiled SASS using CSS::Sass module" ||
		{ echo "Failed to compile SASS with CSS::Sass module"; exit 1 }
else
    echo "Need either 'sass' command or CSS::Sass Perl 5 module"
	exit 1
fi