610 lines
15 KiB
Ruby
610 lines
15 KiB
Ruby
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require 'zip/zip'
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module Zip
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# The ZipFileSystem API provides an API for accessing entries in
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# a zip archive that is similar to ruby's builtin File and Dir
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# classes.
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#
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# Requiring 'zip/zipfilesystem' includes this module in ZipFile
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# making the methods in this module available on ZipFile objects.
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#
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# Using this API the following example creates a new zip file
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# <code>my.zip</code> containing a normal entry with the name
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# <code>first.txt</code>, a directory entry named <code>mydir</code>
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# and finally another normal entry named <code>second.txt</code>
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#
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# require 'zip/zipfilesystem'
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#
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# Zip::ZipFile.open("my.zip", Zip::ZipFile::CREATE) {
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# |zipfile|
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# zipfile.file.open("first.txt", "w") { |f| f.puts "Hello world" }
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# zipfile.dir.mkdir("mydir")
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# zipfile.file.open("mydir/second.txt", "w") { |f| f.puts "Hello again" }
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# }
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#
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# Reading is as easy as writing, as the following example shows. The
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# example writes the contents of <code>first.txt</code> from zip archive
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# <code>my.zip</code> to standard out.
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#
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# require 'zip/zipfilesystem'
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#
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# Zip::ZipFile.open("my.zip") {
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# |zipfile|
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# puts zipfile.file.read("first.txt")
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# }
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module ZipFileSystem
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def initialize # :nodoc:
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mappedZip = ZipFileNameMapper.new(self)
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@zipFsDir = ZipFsDir.new(mappedZip)
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@zipFsFile = ZipFsFile.new(mappedZip)
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@zipFsDir.file = @zipFsFile
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@zipFsFile.dir = @zipFsDir
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end
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# Returns a ZipFsDir which is much like ruby's builtin Dir (class)
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# object, except it works on the ZipFile on which this method is
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# invoked
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def dir
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@zipFsDir
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end
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# Returns a ZipFsFile which is much like ruby's builtin File (class)
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# object, except it works on the ZipFile on which this method is
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# invoked
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def file
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@zipFsFile
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end
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# Instances of this class are normally accessed via the accessor
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# ZipFile::file. An instance of ZipFsFile behaves like ruby's
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# builtin File (class) object, except it works on ZipFile entries.
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#
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# The individual methods are not documented due to their
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# similarity with the methods in File
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class ZipFsFile
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attr_writer :dir
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# protected :dir
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class ZipFsStat
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def initialize(zipFsFile, entryName)
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@zipFsFile = zipFsFile
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@entryName = entryName
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end
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def forward_invoke(msg)
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@zipFsFile.send(msg, @entryName)
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end
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def kind_of?(t)
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super || t == ::File::Stat
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end
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forward_message :forward_invoke, :file?, :directory?, :pipe?, :chardev?
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forward_message :forward_invoke, :symlink?, :socket?, :blockdev?
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forward_message :forward_invoke, :readable?, :readable_real?
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forward_message :forward_invoke, :writable?, :writable_real?
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forward_message :forward_invoke, :executable?, :executable_real?
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forward_message :forward_invoke, :sticky?, :owned?, :grpowned?
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forward_message :forward_invoke, :setuid?, :setgid?
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forward_message :forward_invoke, :zero?
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forward_message :forward_invoke, :size, :size?
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forward_message :forward_invoke, :mtime, :atime, :ctime
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def blocks; nil; end
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def get_entry
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@zipFsFile.__send__(:get_entry, @entryName)
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end
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private :get_entry
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def gid
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e = get_entry
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if e.extra.member? "IUnix"
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e.extra["IUnix"].gid || 0
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else
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0
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end
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end
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def uid
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e = get_entry
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if e.extra.member? "IUnix"
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e.extra["IUnix"].uid || 0
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else
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0
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end
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end
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def ino; 0; end
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def dev; 0; end
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def rdev; 0; end
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def rdev_major; 0; end
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def rdev_minor; 0; end
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def ftype
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if file?
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return "file"
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elsif directory?
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return "directory"
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else
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raise StandardError, "Unknown file type"
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end
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end
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def nlink; 1; end
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def blksize; nil; end
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def mode
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e = get_entry
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if e.fstype == 3
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e.externalFileAttributes >> 16
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else
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33206 # 33206 is equivalent to -rw-rw-rw-
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end
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end
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end
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def initialize(mappedZip)
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@mappedZip = mappedZip
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end
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def get_entry(fileName)
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if ! exists?(fileName)
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raise Errno::ENOENT, "No such file or directory - #{fileName}"
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end
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@mappedZip.find_entry(fileName)
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end
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private :get_entry
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def unix_mode_cmp(fileName, mode)
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begin
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e = get_entry(fileName)
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e.fstype == 3 && ((e.externalFileAttributes >> 16) & mode ) != 0
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rescue Errno::ENOENT
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false
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end
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end
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private :unix_mode_cmp
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def exists?(fileName)
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expand_path(fileName) == "/" || @mappedZip.find_entry(fileName) != nil
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end
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alias :exist? :exists?
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# Permissions not implemented, so if the file exists it is accessible
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alias owned? exists?
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alias grpowned? exists?
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def readable?(fileName)
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unix_mode_cmp(fileName, 0444)
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end
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alias readable_real? readable?
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def writable?(fileName)
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unix_mode_cmp(fileName, 0222)
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end
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alias writable_real? writable?
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def executable?(fileName)
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unix_mode_cmp(fileName, 0111)
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end
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alias executable_real? executable?
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def setuid?(fileName)
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unix_mode_cmp(fileName, 04000)
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end
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def setgid?(fileName)
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unix_mode_cmp(fileName, 02000)
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end
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def sticky?(fileName)
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unix_mode_cmp(fileName, 01000)
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end
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def umask(*args)
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::File.umask(*args)
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end
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def truncate(fileName, len)
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raise StandardError, "truncate not supported"
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end
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def directory?(fileName)
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entry = @mappedZip.find_entry(fileName)
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expand_path(fileName) == "/" || (entry != nil && entry.directory?)
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end
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def open(fileName, openMode = "r", &block)
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case openMode
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when "r"
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@mappedZip.get_input_stream(fileName, &block)
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when "w"
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@mappedZip.get_output_stream(fileName, &block)
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else
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raise StandardError, "openmode '#{openMode} not supported" unless openMode == "r"
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end
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end
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def new(fileName, openMode = "r")
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open(fileName, openMode)
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end
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def size(fileName)
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@mappedZip.get_entry(fileName).size
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end
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# Returns nil for not found and nil for directories
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def size?(fileName)
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entry = @mappedZip.find_entry(fileName)
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return (entry == nil || entry.directory?) ? nil : entry.size
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end
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def chown(ownerInt, groupInt, *filenames)
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filenames.each { |fileName|
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e = get_entry(fileName)
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unless e.extra.member?("IUnix")
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e.extra.create("IUnix")
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end
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e.extra["IUnix"].uid = ownerInt
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e.extra["IUnix"].gid = groupInt
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}
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filenames.size
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end
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def chmod (modeInt, *filenames)
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filenames.each { |fileName|
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e = get_entry(fileName)
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e.fstype = 3 # force convertion filesystem type to unix
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e.externalFileAttributes = modeInt << 16
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}
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filenames.size
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end
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def zero?(fileName)
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sz = size(fileName)
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sz == nil || sz == 0
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rescue Errno::ENOENT
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false
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end
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def file?(fileName)
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entry = @mappedZip.find_entry(fileName)
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entry != nil && entry.file?
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end
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def dirname(fileName)
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::File.dirname(fileName)
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end
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def basename(fileName)
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::File.basename(fileName)
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end
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def split(fileName)
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::File.split(fileName)
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end
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def join(*fragments)
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::File.join(*fragments)
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end
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def utime(modifiedTime, *fileNames)
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fileNames.each { |fileName|
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get_entry(fileName).time = modifiedTime
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}
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end
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def mtime(fileName)
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@mappedZip.get_entry(fileName).mtime
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end
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def atime(fileName)
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e = get_entry(fileName)
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if e.extra.member? "UniversalTime"
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e.extra["UniversalTime"].atime
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else
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nil
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end
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end
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def ctime(fileName)
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e = get_entry(fileName)
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if e.extra.member? "UniversalTime"
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e.extra["UniversalTime"].ctime
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else
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nil
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end
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end
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def pipe?(filename)
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false
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end
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def blockdev?(filename)
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false
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end
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def chardev?(filename)
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false
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end
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def symlink?(fileName)
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false
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end
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def socket?(fileName)
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false
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end
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def ftype(fileName)
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@mappedZip.get_entry(fileName).directory? ? "directory" : "file"
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end
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def readlink(fileName)
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raise NotImplementedError, "The readlink() function is not implemented"
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end
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def symlink(fileName, symlinkName)
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raise NotImplementedError, "The symlink() function is not implemented"
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end
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def link(fileName, symlinkName)
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raise NotImplementedError, "The link() function is not implemented"
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end
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def pipe
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raise NotImplementedError, "The pipe() function is not implemented"
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end
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def stat(fileName)
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if ! exists?(fileName)
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raise Errno::ENOENT, fileName
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end
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ZipFsStat.new(self, fileName)
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end
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alias lstat stat
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def readlines(fileName)
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open(fileName) { |is| is.readlines }
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end
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def read(fileName)
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@mappedZip.read(fileName)
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end
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def popen(*args, &aProc)
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File.popen(*args, &aProc)
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end
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def foreach(fileName, aSep = $/, &aProc)
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open(fileName) { |is| is.each_line(aSep, &aProc) }
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end
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def delete(*args)
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args.each {
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|fileName|
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if directory?(fileName)
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raise Errno::EISDIR, "Is a directory - \"#{fileName}\""
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end
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@mappedZip.remove(fileName)
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}
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end
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def rename(fileToRename, newName)
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@mappedZip.rename(fileToRename, newName) { true }
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end
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alias :unlink :delete
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def expand_path(aPath)
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@mappedZip.expand_path(aPath)
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end
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end
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# Instances of this class are normally accessed via the accessor
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||
|
|
# ZipFile::dir. An instance of ZipFsDir behaves like ruby's
|
||
|
|
# builtin Dir (class) object, except it works on ZipFile entries.
|
||
|
|
#
|
||
|
|
# The individual methods are not documented due to their
|
||
|
|
# similarity with the methods in Dir
|
||
|
|
class ZipFsDir
|
||
|
|
|
||
|
|
def initialize(mappedZip)
|
||
|
|
@mappedZip = mappedZip
|
||
|
|
end
|
||
|
|
|
||
|
|
attr_writer :file
|
||
|
|
|
||
|
|
def new(aDirectoryName)
|
||
|
|
ZipFsDirIterator.new(entries(aDirectoryName))
|
||
|
|
end
|
||
|
|
|
||
|
|
def open(aDirectoryName)
|
||
|
|
dirIt = new(aDirectoryName)
|
||
|
|
if block_given?
|
||
|
|
begin
|
||
|
|
yield(dirIt)
|
||
|
|
return nil
|
||
|
|
ensure
|
||
|
|
dirIt.close
|
||
|
|
end
|
||
|
|
end
|
||
|
|
dirIt
|
||
|
|
end
|
||
|
|
|
||
|
|
def pwd; @mappedZip.pwd; end
|
||
|
|
alias getwd pwd
|
||
|
|
|
||
|
|
def chdir(aDirectoryName)
|
||
|
|
unless @file.stat(aDirectoryName).directory?
|
||
|
|
raise Errno::EINVAL, "Invalid argument - #{aDirectoryName}"
|
||
|
|
end
|
||
|
|
@mappedZip.pwd = @file.expand_path(aDirectoryName)
|
||
|
|
end
|
||
|
|
|
||
|
|
def entries(aDirectoryName)
|
||
|
|
entries = []
|
||
|
|
foreach(aDirectoryName) { |e| entries << e }
|
||
|
|
entries
|
||
|
|
end
|
||
|
|
|
||
|
|
def foreach(aDirectoryName)
|
||
|
|
unless @file.stat(aDirectoryName).directory?
|
||
|
|
raise Errno::ENOTDIR, aDirectoryName
|
||
|
|
end
|
||
|
|
path = @file.expand_path(aDirectoryName).ensure_end("/")
|
||
|
|
|
||
|
|
subDirEntriesRegex = Regexp.new("^#{path}([^/]+)$")
|
||
|
|
@mappedZip.each {
|
||
|
|
|fileName|
|
||
|
|
match = subDirEntriesRegex.match(fileName)
|
||
|
|
yield(match[1]) unless match == nil
|
||
|
|
}
|
||
|
|
end
|
||
|
|
|
||
|
|
def delete(entryName)
|
||
|
|
unless @file.stat(entryName).directory?
|
||
|
|
raise Errno::EINVAL, "Invalid argument - #{entryName}"
|
||
|
|
end
|
||
|
|
@mappedZip.remove(entryName)
|
||
|
|
end
|
||
|
|
alias rmdir delete
|
||
|
|
alias unlink delete
|
||
|
|
|
||
|
|
def mkdir(entryName, permissionInt = 0755)
|
||
|
|
@mappedZip.mkdir(entryName, permissionInt)
|
||
|
|
end
|
||
|
|
|
||
|
|
def chroot(*args)
|
||
|
|
raise NotImplementedError, "The chroot() function is not implemented"
|
||
|
|
end
|
||
|
|
|
||
|
|
end
|
||
|
|
|
||
|
|
class ZipFsDirIterator # :nodoc:all
|
||
|
|
include Enumerable
|
||
|
|
|
||
|
|
def initialize(arrayOfFileNames)
|
||
|
|
@fileNames = arrayOfFileNames
|
||
|
|
@index = 0
|
||
|
|
end
|
||
|
|
|
||
|
|
def close
|
||
|
|
@fileNames = nil
|
||
|
|
end
|
||
|
|
|
||
|
|
def each(&aProc)
|
||
|
|
raise IOError, "closed directory" if @fileNames == nil
|
||
|
|
@fileNames.each(&aProc)
|
||
|
|
end
|
||
|
|
|
||
|
|
def read
|
||
|
|
raise IOError, "closed directory" if @fileNames == nil
|
||
|
|
@fileNames[(@index+=1)-1]
|
||
|
|
end
|
||
|
|
|
||
|
|
def rewind
|
||
|
|
raise IOError, "closed directory" if @fileNames == nil
|
||
|
|
@index = 0
|
||
|
|
end
|
||
|
|
|
||
|
|
def seek(anIntegerPosition)
|
||
|
|
raise IOError, "closed directory" if @fileNames == nil
|
||
|
|
@index = anIntegerPosition
|
||
|
|
end
|
||
|
|
|
||
|
|
def tell
|
||
|
|
raise IOError, "closed directory" if @fileNames == nil
|
||
|
|
@index
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
# All access to ZipFile from ZipFsFile and ZipFsDir goes through a
|
||
|
|
# ZipFileNameMapper, which has one responsibility: ensure
|
||
|
|
class ZipFileNameMapper # :nodoc:all
|
||
|
|
include Enumerable
|
||
|
|
|
||
|
|
def initialize(zipFile)
|
||
|
|
@zipFile = zipFile
|
||
|
|
@pwd = "/"
|
||
|
|
end
|
||
|
|
|
||
|
|
attr_accessor :pwd
|
||
|
|
|
||
|
|
def find_entry(fileName)
|
||
|
|
@zipFile.find_entry(expand_to_entry(fileName))
|
||
|
|
end
|
||
|
|
|
||
|
|
def get_entry(fileName)
|
||
|
|
@zipFile.get_entry(expand_to_entry(fileName))
|
||
|
|
end
|
||
|
|
|
||
|
|
def get_input_stream(fileName, &aProc)
|
||
|
|
@zipFile.get_input_stream(expand_to_entry(fileName), &aProc)
|
||
|
|
end
|
||
|
|
|
||
|
|
def get_output_stream(fileName, &aProc)
|
||
|
|
@zipFile.get_output_stream(expand_to_entry(fileName), &aProc)
|
||
|
|
end
|
||
|
|
|
||
|
|
def read(fileName)
|
||
|
|
@zipFile.read(expand_to_entry(fileName))
|
||
|
|
end
|
||
|
|
|
||
|
|
def remove(fileName)
|
||
|
|
@zipFile.remove(expand_to_entry(fileName))
|
||
|
|
end
|
||
|
|
|
||
|
|
def rename(fileName, newName, &continueOnExistsProc)
|
||
|
|
@zipFile.rename(expand_to_entry(fileName), expand_to_entry(newName),
|
||
|
|
&continueOnExistsProc)
|
||
|
|
end
|
||
|
|
|
||
|
|
def mkdir(fileName, permissionInt = 0755)
|
||
|
|
@zipFile.mkdir(expand_to_entry(fileName), permissionInt)
|
||
|
|
end
|
||
|
|
|
||
|
|
# Turns entries into strings and adds leading /
|
||
|
|
# and removes trailing slash on directories
|
||
|
|
def each
|
||
|
|
@zipFile.each {
|
||
|
|
|e|
|
||
|
|
yield("/"+e.to_s.chomp("/"))
|
||
|
|
}
|
||
|
|
end
|
||
|
|
|
||
|
|
def expand_path(aPath)
|
||
|
|
expanded = aPath.starts_with("/") ? aPath : @pwd.ensure_end("/") + aPath
|
||
|
|
expanded.gsub!(/\/\.(\/|$)/, "")
|
||
|
|
expanded.gsub!(/[^\/]+\/\.\.(\/|$)/, "")
|
||
|
|
expanded.empty? ? "/" : expanded
|
||
|
|
end
|
||
|
|
|
||
|
|
private
|
||
|
|
|
||
|
|
def expand_to_entry(aPath)
|
||
|
|
expand_path(aPath).lchop
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
class ZipFile
|
||
|
|
include ZipFileSystem
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
# Copyright (C) 2002, 2003 Thomas Sondergaard
|
||
|
|
# rubyzip is free software; you can redistribute it and/or
|
||
|
|
# modify it under the terms of the ruby license.
|