Add module to parse program arguments

1 files changed, 47 insertions, 0 deletions

diff --git a/optparser.rb b/optparser.rb
new file mode 100644
index 0000000..1886476
--- /dev/null
+++ b/optparser.rb
@@ -0,0 +1,47 @@
+# A simple website generator
+# Copyright (C) 2022  Alessandro Iezzi <aiezzi AT alessandroiezzi DOT it>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+def optparse
+  options = {}
+  optparse = OptionParser.new do |opt|
+    opt.on("-f", "--file-name FILENAME", "File name of the page you want to render") {
+      |o| options[:fileName] = o
+    }
+    opt.on("-t", "--title TITLE", "Title of the rendered page") {
+      |o| options[:title] = o
+    }
+    opt.on("-m", "--master MASTER", "Master file page") {
+      |o| options[:master] = o
+    }
+    opt.on("-n", "--page-name NAME", "Page name") {
+      |o| options[:pageNames] = o
+    }
+    opt.on_tail("-h", "--help", "Show this message") do
+      puts opt
+      exit
+    end
+  end
+
+  if ARGV.length < 1 then
+    puts optparse.help
+    exit 1
+  end
+
+  optparse.parse!
+
+  return options
+
+end