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authormatz <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>1999-08-13 05:45:20 +0000
committermatz <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>1999-08-13 05:45:20 +0000
commit65a5162550f58047974793cdc8067a970b2435c0 (patch)
tree082bb7d5568f3b2e36e3fe166e9f3039394fcf44 /lib/Env.rb
parentfcd020c83028f5610d382e85a2df00223e12bd7e (diff)
1.4.0
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@520 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'lib/Env.rb')
-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