* lib/ftools.rb (File.safe_unlink): do not modify a symlinked file.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@8355 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Tue Apr 19 23:37:09 2005  WATANABE Hirofumi  <eban@ruby-lang.org>
+
+	* lib/ftools.rb (File.safe_unlink): do not modify a symlinked file.
+
 Tue Apr 19 23:02:40 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* eval.c (search_required): deal with features with path too.

lib/ftools.rb

@@ -1,7 +1,7 @@
 # 
 # = ftools.rb: Extra tools for the File class
 #
-# Author:: WANTANABE, Hirofumi
+# Author:: WATANABE, Hirofumi
 # Documentation:: Zachary Landau
 #
 # This library can be distributed under the terms of the Ruby license.
@@ -45,8 +45,8 @@ class << File
   # in +to+. 
   #
   def catname(from, to)
-    if FileTest.directory? to
-      File.join to.sub(%r([/\\]$), ''), basename(from)
+    if directory? to
+      join to.sub(%r([/\\]$), ''), basename(from)
     else
       to
     end
@@ -88,7 +88,7 @@ class << File
   # is printed.
   #
   def copy(from, to, verbose = false)
-    $deferr.print from, " -> ", catname(from, to), "\n" if verbose
+    $stderr.print from, " -> ", catname(from, to), "\n" if verbose
     syscopy from, to
   end
 
@@ -101,9 +101,9 @@ class << File
   #
   def move(from, to, verbose = false)
     to = catname(from, to)
-    $deferr.print from, " -> ", to, "\n" if verbose
+    $stderr.print from, " -> ", to, "\n" if verbose
 
-    if RUBY_PLATFORM =~ /djgpp|(cyg|ms|bcc)win|mingw/ and FileTest.file? to
+    if RUBY_PLATFORM =~ /djgpp|(cyg|ms|bcc)win|mingw/ and file? to
       unlink to
     end
     fstat = stat(from)
@@ -111,7 +111,7 @@ class << File
       rename from, to
     rescue
       begin
-        symlink File.readlink(from), to and unlink from
+        symlink readlink(from), to and unlink from
       rescue
 	from_stat = stat(from)
 	syscopy from, to and unlink from
@@ -131,7 +131,7 @@ class << File
   # identical. If +verbose+ is +true+, <tt>from <=> to</tt> is printed.
   #
   def compare(from, to, verbose = false)
-    $deferr.print from, " <=> ", to, "\n" if verbose
+    $stderr.print from, " <=> ", to, "\n" if verbose
 
     return false if stat(from).size != stat(to).size
 
@@ -170,12 +170,22 @@ class << File
   #
   def safe_unlink(*files)
     verbose = if files[-1].is_a? String then false else files.pop end
-    begin
-      $deferr.print files.join(" "), "\n" if verbose
-      chmod 0777, *files
-      unlink(*files)
-    rescue
-#      $deferr.print "warning: Couldn't unlink #{files.join ' '}\n"
+    files.each do |file|
+      begin
+        unlink file
+        $stderr.print "removing ", file, "\n" if verbose
+      rescue Errno::EACCES # for Windows
+        continue if symlink? file
+        begin
+          mode = stat(file).mode
+          o_chmod mode | 0200, file
+          unlink file
+          $stderr.print "removing ", file, "\n" if verbose
+        rescue
+          o_chmod mode, file rescue nil
+        end
+      rescue
+      end
     end
   end
 
@@ -197,18 +207,17 @@ class << File
   #
   def makedirs(*dirs)
     verbose = if dirs[-1].is_a? String then false else dirs.pop end
-#    mode = if dirs[-1].is_a? Fixnum then dirs.pop else 0755 end
     mode = 0755
     for dir in dirs
       parent = dirname(dir)
-      next if parent == dir or FileTest.directory? dir
-      makedirs parent unless FileTest.directory? parent
-      $deferr.print "mkdir ", dir, "\n" if verbose
+      next if parent == dir or directory? dir
+      makedirs parent unless directory? parent
+      $stderr.print "mkdir ", dir, "\n" if verbose
       if basename(dir) != ""
         begin
           Dir.mkdir dir, mode
         rescue SystemCallError
-          raise unless File.directory? dir
+          raise unless directory? dir
         end
       end
     end
@@ -230,7 +239,7 @@ class << File
   #
   def chmod(mode, *files)
     verbose = if files[-1].is_a? String then false else files.pop end
-    $deferr.printf "chmod %04o %s\n", mode, files.join(" ") if verbose
+    $stderr.printf "chmod %04o %s\n", mode, files.join(" ") if verbose
     o_chmod mode, *files
   end
   $VERBOSE = vsave
@@ -243,8 +252,8 @@ class << File
   #
   def install(from, to, mode = nil, verbose = false)
     to = catname(from, to)
-    unless FileTest.exist? to and cmp from, to
-      safe_unlink to if FileTest.exist? to
+    unless exist? to and cmp from, to
+      safe_unlink to if exist? to
       cp from, to, verbose
       chmod mode, to, verbose if mode
     end