Vendor the external cookbooks

Knife-Zero doesn't include Berkshelf support, so vendoring everything in
the repo is convenient again

cookbooks/poise-languages/files/halite_gem/poise_languages/utils.rb

@@ -0,0 +1,68 @@
+#
+# Copyright 2015-2017, Noah Kantrowitz
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+require 'shellwords'
+
+require 'poise_languages/utils/which'
+
+
+module PoiseLanguages
+  module Utils
+    include Which
+    extend self
+
+    # Default whitelist for {#shelljoin}.
+    SHELLJOIN_WHITELIST = [/^2?[><]/]
+
+    # An improved version of Shellwords.shelljoin that doesn't escape a few
+    # things.
+    #
+    # @param cmd [Array<String>] Command array to join.
+    # @param whitelist [Array<Regexp>] Array of patterns to whitelist.
+    # @return [String]
+    def shelljoin(cmd, whitelist: SHELLJOIN_WHITELIST)
+      cmd.map do |str|
+        if whitelist.any? {|pat| str =~ pat }
+          str
+        else
+          Shellwords.shellescape(str)
+        end
+      end.join(' ')
+    end
+
+    # Convert the executable in a string or array command to an absolute path.
+    #
+    # @param cmd [String, Array<String>] Command to fix up.
+    # @param path [String, nil] Replacement $PATH for executable lookup.
+    # @return [String, Array<String>]
+    def absolute_command(cmd, path: nil)
+      was_array = cmd.is_a?(Array)
+      cmd = if was_array
+        cmd.dup
+      else
+        Shellwords.split(cmd)
+      end
+      # Don't try to touch anything if the first value looks like a flag or a path.
+      if cmd.first && !cmd.first.start_with?('-') && !cmd.first.include?(::File::SEPARATOR)
+        # If which returns false, just leave it I guess.
+        cmd[0] = which(cmd.first, path: path) || cmd.first
+      end
+      cmd = shelljoin(cmd) unless was_array
+      cmd
+    end
+
+  end
+end