implement generationg for last 2 tags

changelog_generator.rb

@@ -49,20 +49,32 @@ class ChangelogGenerator
 
   end
 
-  def compund_changelog_for_last_tag
+  def compund_changelog
     if @options[:verbose]
       puts 'Generating changelog:'
     end
     log = ''
+
+    if @options[:last]
       prev_tag = self.all_tags[1]
       last_tag = self.all_tags[0]
 
       log += self.generate_log_between_tags(prev_tag, last_tag)
+    elsif @options[:tag1] && @options[:tag2]
+      log += self.generate_log_between_tags(@options[:tag1], @options[:tag2])
+    else
+      log += self.generate_log_for_all_tags
+    end
+
     puts log
     File.open('output.txt', 'w') { |file| file.write(log) }
 
   end
 
+  def generate_log_for_all_tags
+
+  end
+
   def is_megred(number)
     @github.pull_requests.merged? $github_user, $github_repo_name, number
   end
@@ -140,9 +152,13 @@ class ChangelogGenerator
     end
 
     github_git_data_commits_get = @github.git_data.commits.get $github_user, $github_repo_name, prev_tag['commit']['sha']
+    if github_git_data_commits_get
       time_string = github_git_data_commits_get['committer']['date']
       Time.parse(time_string)
-
+    else
+      puts "Can't find tag #{prev_tag['name']} -> exit"
+      exit
+    end
   end
 
 end
@@ -151,8 +167,6 @@ if __FILE__ == $0
 
   log_generator = ChangelogGenerator.new
 
-  prev_tag = log_generator.all_tags[0]
-  last_tag = log_generator.all_tags[2]
-  puts log_generator.generate_log_between_tags(prev_tag, last_tag)
+  log_generator.compund_changelog
   # log_generator.generate_log_between_tags(tags[1], tags[2])
 end

parser.rb

@@ -18,6 +18,10 @@ class Parser
       opts.on('-v', '--[no-]verbose', 'Run verbosely') do |v|
         @options[:verbose] = v
       end
+
+      opts.on('-l', '--last-changes', 'generate log between last 2 tags') do |last|
+        @options[:last] = last
+      end
     }
 
     parser.parse!