1 files changed, 23 insertions, 38 deletions
diff --git a/sample/view.rb b/sample/view.rb
index 300b3b9..66e861a 100755
--- a/sample/view.rb
+++ b/sample/view.rb
@@ -3,54 +3,41 @@
 require "curses"
 include Curses
 
-#
-# main
-#
-
-if ARGV.size != 1 then
-  printf("usage: view file\n");
+unless ARGV.size == 1
+  puts "usage: #{$0} file"
   exit
 end
+
 begin
-  fp = open(ARGV[0], "r")
+  data_lines = File.readlines(ARGV[0])
 rescue
-  raise "cannot open file: #{ARGV[1]}"
+  raise "cannot open file: #{ARGV[0]}"
 end
 
-# signal(SIGINT, finish)
-
 init_screen
-#keypad(stdscr, TRUE)
+#keypad(stdscr, true)
 nonl
 cbreak
 noecho
-#scrollok(stdscr, TRUE)
-
-# slurp the file
-data_lines = []
-fp.each_line { |l|
-  data_lines.push(l)
-}
-fp.close
-
+#scrollok(stdscr, true)
 
 lptr = 0
-while TRUE
-  i = 0
-  while i < lines
+loop do
+  lines.times do |i|
     setpos(i, 0)
     #clrtoeol
-    addstr(data_lines[lptr + i] || '')
-    i += 1
+    addstr(data_lines[lptr + i] || "")
   end
   refresh
 
-  explicit = FALSE
+  explicit = false
   n = 0
-  while TRUE
+  c = nil
+  loop do
     c = getch
     if c =~ /[0-9]/
       n = 10 * n + c.to_i
+      explicit = true
     else
       break
     end
@@ -61,31 +48,29 @@ while TRUE
   case c
   when "n"  #when KEY_DOWN
     i = 0
-    while i < n
-      if lptr + lines < data_lines.size then
-	lptr += 1
+    n.times do
+      if lptr + lines < data_lines.size
+        lptr += 1
       else
-	break
+        break
       end
       i += 1
     end
     #wscrl(i)
-
   when "p"  #when KEY_UP
     i = 0
-    while i < n
-      if lptr > 0 then
-	lptr -= 1
+    n.times do
+      if lptr > 0
+        lptr -= 1
       else
-	break
+        break
       end
       i += 1
     end
     #wscrl(-i)
-
   when "q"
     break
   end
-
 end
+
 close_screen