Use class methods of `File` over `Kernel.open` and `IO.read`

sample/coverage.rb

@@ -49,7 +49,7 @@ at_exit do
         end
       end
 
-      open(cfile, "w") do |out|
+      File.open(cfile, "w") do |out|
         covs.zip(sources, pcovs).each_with_index do |(cov, line, pcov), idx|
           cov += pcov || 0 if cov
           cov = (cov ? (cov == 0 ? "#####" : cov.to_s) : "-").rjust(9)

sample/from.rb

@@ -62,7 +62,7 @@ def from_main
   if File.exist?(file)
     atime = File.atime(file)
     mtime = File.mtime(file)
-    open(file, "r") do |f|
+    File.open(file, "r") do |f|
       until f.eof?
         header = {}
         f.each_line do |line|

sample/mpart.rb

@@ -2,11 +2,29 @@
 # split into multi part
 # usage: mpart.rb [-nnn] file..
 
+class MPart < File
+  def self.new(basename, extname, part, parts)
+    super(sprintf("%s.%s%02d", basename, extname, part), "w").
+      begin_mpart(basename, part, parts)
+  end
+
+  def begin_mpart(basename, part, parts)
+    printf("%s part%02d/%02d\n", basename, part, parts)
+    write("BEGIN--cut here--cut here\n")
+    self
+  end
+
+  def close
+    write("END--cut here--cut here\n")
+    super
+  end
+end
+
 lines = 1000
 
 if (ARGV[0] =~ /^-(\d+)$/ )
-  lines = $1.to_i;
-  ARGV.shift;
+  lines = $1.to_i
+  ARGV.shift
 end
 
 basename = ARGV[0]
@@ -14,31 +32,23 @@ extname = "part"
 
 part = 1
 line = 0
+ofp = nil
 
 fline = 0
-for i in ifp = open(basename)
-  fline = fline + 1
-end
-ifp.close
+File.foreach(basename) {fline += 1}
 
 parts = fline / lines + 1
 
-for i in ifp = open(basename)
+File.foreach(basename) do |i|
   if line == 0
-    ofp = open(sprintf("%s.%s%02d", basename, extname, part), "w")
-    printf(ofp, "%s part%02d/%02d\n", basename, part, parts)
-    ofp.write("BEGIN--cut here--cut here\n")
+    ofp = MPart.new(basename, extname, part, parts)
   end
   ofp.write(i)
-  line = line + 1
-  if line >= lines and !ifp.eof?
-    ofp.write("END--cut here--cut here\n")
+  line += 1
+  if line >= lines
     ofp.close
-    part = part + 1
+    part += 1
     line = 0
   end
 end
-ofp.write("END--cut here--cut here\n")
 ofp.close
-
-ifp.close

sample/uumerge.rb

@@ -15,7 +15,7 @@ while line = gets()
     if out_stdout
       out = STDOUT
     else
-      out = open($file, "w") if $file != ""
+      out = File.open($file, "w") if $file != ""
     end
     out.binmode
     break

tool/lib/test/unit.rb

@@ -729,7 +729,7 @@ module Test
           return result
         ensure
           if file = @options[:timetable_data]
-            open(file, 'w'){|f|
+            File.open(file, 'w'){|f|
               @records.each{|(worker, suite), (st, ed)|
                 f.puts '[' + [worker.dump, suite.dump, st.to_f * 1_000, ed.to_f * 1_000].join(", ") + '],'
               }

tool/lib/webrick/httputils.rb

@@ -112,7 +112,7 @@ module WEBrick
     def load_mime_types(file)
       # note: +file+ may be a "| command" for now; some people may
       # rely on this, but currently we do not use this method by default.
-      open(file){ |io|
+      File.open(file){ |io|
         hash = Hash.new
         io.each{ |line|
           next if /^#/ =~ line

tool/mk_builtin_loader.rb

@@ -276,10 +276,10 @@ def mk_builtin_header file
   collect_builtin(base, Ripper.sexp(code), 'top', bs = {}, inlines = {})
 
   begin
-    f = open(ofile, 'w')
-  rescue Errno::EACCES
+    f = File.open(ofile, 'w')
+  rescue SystemCallError # EACCES, EPERM, EROFS, etc.
     # Fall back to the current directory
-    f = open(File.basename(ofile), 'w')
+    f = File.open(File.basename(ofile), 'w')
   end
   begin
     if File::ALT_SEPARATOR

tool/test/webrick/test_filehandler.rb

@@ -85,12 +85,12 @@ class WEBrick::TestFileHandler < Test::Unit::TestCase
           "Content-Type: text/plain\r\n" \
           "Content-Range: bytes 0-0/#{filesize}\r\n" \
           "\r\n" \
-          "#{IO.read(__FILE__, 1)}\r\n" \
+          "#{File.read(__FILE__, 1)}\r\n" \
           "--#{boundary}\r\n" \
           "Content-Type: text/plain\r\n" \
           "Content-Range: bytes #{off}-#{last}/#{filesize}\r\n" \
           "\r\n" \
-          "#{IO.read(__FILE__, 2, off)}\r\n" \
+          "#{File.read(__FILE__, 2, off)}\r\n" \
           "--#{boundary}--\r\n"
     assert_equal exp, body
   end

tool/test/webrick/test_httprequest.rb

@@ -245,7 +245,7 @@ GET /
 
     _end_of_message_
     msg.gsub!(/^ {6}/, "")
-    open(__FILE__){|io|
+    File.open(__FILE__){|io|
       while chunk = io.read(100)
         msg << chunk.size.to_s(16) << crlf
         msg << chunk << crlf

tool/transcode-tblgen.rb

@@ -725,7 +725,7 @@ def citrus_decode_mapsrc(ces, csid, mapsrcs)
     path << ".src"
     path[path.rindex('/')] = '%'
     STDOUT.puts 'load mapsrc %s' % path if VERBOSE_MODE > 1
-    open(path, 'rb') do |f|
+    File.open(path, 'rb') do |f|
       f.each_line do |l|
         break if /^BEGIN_MAP/ =~ l
       end

win32/resource.rb

@@ -53,7 +53,7 @@ end
   [$so_name,     '.dll',           'VFT_DLL', 'DLL', dll_icons.join],
 ].each do |base, ext, type, desc, icon|
   next if $output and $output != base
-  open(base + '.rc', "w") { |f|
+  File.open(base + '.rc', "w") { |f|
     f.binmode if /mingw/ =~ RUBY_PLATFORM
 
     f.print <<EOF