91 lines
2.2 KiB
Ruby
91 lines
2.2 KiB
Ruby
# With ziprequire you can load ruby modules from a zip file. This means
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# ruby's module include path can include zip-files.
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#
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# The following example creates a zip file with a single entry
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# <code>log/simplelog.rb</code> that contains a single function
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# <code>simpleLog</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", true) {
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# |zf|
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# zf.file.open("log/simplelog.rb", "w") {
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# |f|
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# f.puts "def simpleLog(v)"
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# f.puts ' Kernel.puts "INFO: #{v}"'
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# f.puts "end"
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# }
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# }
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#
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# To use the ruby module stored in the zip archive simply require
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# <code>zip/ziprequire</code> and include the <code>my.zip</code> zip
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# file in the module search path. The following command shows one
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# way to do this:
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#
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# ruby -rzip/ziprequire -Imy.zip -e " require 'log/simplelog'; simpleLog 'Hello world' "
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#$: << 'data/rubycode.zip' << 'data/rubycode2.zip'
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require 'zip/zip'
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class ZipList #:nodoc:all
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def initialize(zipFileList)
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@zipFileList = zipFileList
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end
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def get_input_stream(entry, &aProc)
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@zipFileList.each {
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|zfName|
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Zip::ZipFile.open(zfName) {
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|zf|
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begin
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return zf.get_input_stream(entry, &aProc)
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rescue Errno::ENOENT
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end
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}
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}
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raise Errno::ENOENT,
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"No matching entry found in zip files '#{@zipFileList.join(', ')}' "+
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" for '#{entry}'"
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end
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end
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module Kernel #:nodoc:all
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alias :oldRequire :require
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def require(moduleName)
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zip_require(moduleName) || oldRequire(moduleName)
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end
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def zip_require(moduleName)
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return false if already_loaded?(moduleName)
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get_resource(ensure_rb_extension(moduleName)) {
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|zis|
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eval(zis.read); $" << moduleName
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}
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return true
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rescue Errno::ENOENT => ex
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return false
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end
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def get_resource(resourceName, &aProc)
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zl = ZipList.new($:.grep(/\.zip$/))
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zl.get_input_stream(resourceName, &aProc)
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end
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def already_loaded?(moduleName)
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moduleRE = Regexp.new("^"+moduleName+"(\.rb|\.so|\.dll|\.o)?$")
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$".detect { |e| e =~ moduleRE } != nil
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end
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def ensure_rb_extension(aString)
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aString.sub(/(\.rb)?$/i, ".rb")
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end
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end
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# Copyright (C) 2002 Thomas Sondergaard
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# rubyzip is free software; you can redistribute it and/or
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# modify it under the terms of the ruby license.
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