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authormatz <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>1998-01-16 12:19:09 +0000
committermatz <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>1998-01-16 12:19:09 +0000
commit62e41d3f2e48422bbdf1bb2db83ae60b255b1a1a (patch)
tree4d0edb1c1986e1578b181ebe2441acfee27f1fab /lib/importenv.rb
parent3db12e8b236ac8f88db8eb4690d10e4a3b8dbcd4 (diff)
Initial revision
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@8 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'lib/importenv.rb')
-rw-r--r--lib/importenv.rb29
1 files changed, 29 insertions, 0 deletions
diff --git a/lib/importenv.rb b/lib/importenv.rb
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+++ b/lib/importenv.rb
@@ -0,0 +1,29 @@
+# importenv.rb -- imports environment variables as global variables
+#
+# Usage:
+#
+# require 'importenv'
+# p $USER
+# $USER = "matz"
+# p ENV["USER"]
+
+for k,v in ENV
+ next unless /^[a-zA-Z][_a-zA-Z0-9]*/ =~ k
+ eval <<EOS
+ $#{k} = %q!#{v}!
+ trace_var "$#{k}", proc{|v|
+ ENV[%q!#{k}!] = v;
+ $#{k} = %q!#{v}!
+ if v == nil
+ untrace_var "$#{k}"
+ end
+ }
+EOS
+end
+
+p $TERM
+$TERM = nil
+p $TERM
+p ENV["TERM"]
+$TERM = "foo"
+p ENV["TERM"]