shell.rb in fulmar-shell-1.8.0

- old
+ new

@@ -1,28 +1,30 @@
 require 'open3'
+require 'fulmar/ringbuffer'
 
 # This shell is part of the fulmar deployment tools
 # it can be used stand-alone, though
 module Fulmar
   # Implements simple access to shell commands
   class Shell
-    VERSION = '1.7.0'
+    VERSION = '1.8.0'
 
     attr_accessor :debug, :last_output, :last_error, :quiet, :strict, :interactive
     attr_reader :path
 
+    DEFAULT_BUFFER_SIZE = 1000
+
     DEFAULT_OPTIONS = {
       login: false,
       escape_bundler: false
     }
 
     def initialize(path = '.', host = 'localhost')
       @host = host.nil? ? 'no_hostname_set' : host
       @path = (path.nil? || path.empty?) ? '.' : path
       @path = File.expand_path(@path) if local?
-      @last_output = []
-      @last_error = []
+      reset_output
       @debug = false
       @quiet = true
       @strict = false
       @interactive = false
       @clean_environment = [] # list of things to clean from environment variables
@@ -32,11 +34,11 @@
       @interactive = interactive
       @quiet = false if interactive
     end
 
     def run(command, options = DEFAULT_OPTIONS)
-      reset_output
+      reset_output(@last_output.max_size)
       command = [command] if command.class == String
 
       # is a custom path given?
       if options[:in]
         # is it absolute?
@@ -68,14 +70,18 @@
 
     def path=(path)
       @path = local? ? File.expand_path(path) : path
     end
 
+    def buffer_size(size)
+      reset_output(size)
+    end
+
     protected
 
-    def reset_output
-      @last_output = []
-      @last_error = []
+    def reset_output(size = DEFAULT_BUFFER_SIZE)
+      @last_output = Fulmar::RingBuffer.new(size)
+      @last_error = Fulmar::RingBuffer.new(size)
     end
 
     def shell_command(login)
       login ? "env -i HOME=\"#{ENV['HOME']}\" LANG=\"#{ENV['LANG']}\" bash -lc" : 'bash -c'
     end