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POFile.delete throws Errno:EACCESS Permission Denied in ruby
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  1. POFile.delete throws Errno:EACCESS Permission Denied in ruby
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    copied!<p>The following code that is meant to delete lines that match a regular expression fails</p> <pre><code>def delete_entry(name) puts "Deleting #{name}.." if $DEBUG begin File.open("#{@file_name}.tmp", 'w') do |out_file| File.open(@file_name, 'r').each do |line| unless line =~ /^#{name},/ out_file.print line else puts "Deleted #{line}!" end end end File.delete(@file_name) File.rename("#{@file_name}.tmp", @file_name) rescue Exception puts "Exception thrown in PhoneBook::delete_entry(#{name}): #{$!}" end end </code></pre> <p>The temporary file works just fine. The corresponding entries are deleted properly. But when I try to delete the old file, and rename the tmp to the new file, File.delete throws the following: (line 56 is the call to File#delete)</p> <pre><code>Exception `Errno::EACCES' at PhoneBook.rb:56 - Permission denied - file-io-sampl es/phonebooks/test.csv Exception thrown in PhoneBook::delete_entry(Mike): Permission denied - file-io-s amples/phonebooks/test.csv </code></pre> <p>Any help would be appreciated. This is on Windows 7 using a NTFS filesystem if that helps matters.</p> <p>Edit: As per Az's suggestion in the comments I added:</p> <pre><code>ObjectSpace.each_object(File) { |f| p f if f.path == @file_name &amp;&amp; !f.closed? } </code></pre> <p>Just before the call to File.delete. The output is below:</p> <pre><code>C:\Pickaxe&gt;ruby PhoneBook.rb true Enter a phonebook! test.csv Using test.csv.. Open Called! Name: Richard Sex: Male Age: 22 Name: Midori Sex: Female Age: 22 Name: Mike Sex: Male Age: 18 Name: Richard Sex: Male Age: 44 Deleting Mike.. Deleted Mike,Male, 18 ! #&lt;File:file-io-samples/phonebooks/test.csv&gt; #&lt;File:file-io-samples/phonebooks/test.csv&gt; Exception `Errno::EACCES' at PhoneBook.rb:56 - Permission denied - file-io-sampl es/phonebooks/test.csv Exception thrown in PhoneBook::delete_entry(Mike): Permission denied - file-io-s amples/phonebooks/test.csv C:\Pickaxe&gt; </code></pre> <p>The two lines prefixed with # is the output of the ObjectSpace call.</p>
 

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