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-rw-r--r--lib/Env.rb31
1 files changed, 31 insertions, 0 deletions
diff --git a/lib/Env.rb b/lib/Env.rb
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+++ b/lib/Env.rb
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+# Env.rb -- imports environment variables as global variables
+#
+# Usage:
+#
+# require 'Env'
+# 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
+
+if __FILE__ == $0
+ p $TERM
+ $TERM = nil
+ p $TERM
+ p ENV["TERM"]
+ $TERM = "foo"
+ p ENV["TERM"]
+end