43 lines
1.4 KiB
Diff
43 lines
1.4 KiB
Diff
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Index: lib/rubygems/installer.rb
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===================================================================
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--- lib/rubygems/installer.rb (revision 1195)
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+++ lib/rubygems/installer.rb (working copy)
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@@ -7,6 +7,8 @@ require 'rubygems/dependency_list'
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module Gem
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+ class InstallError < Gem::Exception; end
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+
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class DependencyRemovalException < Gem::Exception; end
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##
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@@ -321,14 +323,20 @@ TEXT
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#
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def extract_files(directory, format)
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require 'fileutils'
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- wd = Dir.getwd
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- Dir.chdir directory do
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- format.file_entries.each do |entry, file_data|
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- path = entry['path']
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- FileUtils.mkdir_p File.dirname(path)
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- File.open(path, "wb") do |out|
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- out.write file_data
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- end
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+ format.file_entries.each do |entry, file_data|
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+ path = entry['path']
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+ if path =~ /\A\// then # for extra sanity
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+ raise Gem::InstallError,
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+ "attempt to install file into #{entry['path'].inspect}"
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+ end
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+ path = File.expand_path File.join(directory, path)
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+ if path !~ /\A#{Regexp.escape(File.expand_path(directory))}/ then
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+ raise Gem::InstallError,
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+ "attempt to install file into #{entry['path'].inspect}"
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+ end
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+ FileUtils.mkdir_p File.dirname(path)
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+ File.open(path, "wb") do |out|
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+ out.write file_data
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end
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end
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end
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