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Get environment variable

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This function returns the value of the environment variable passed to it, i.e.:

$HOME=getenv("HOME")

It requires that the whole environment is kept in the global varible $ENVSTR, which is faster than using several shell commands to get values. Add the following to your .neditmacro file:

$ENVSTR=shell_command("setenv","")

define getenv {
   if($n_args==0) return $ENVSTR
   else {
      if(search_string($ENVSTR, "(^|[\n])" $1 "[=]", 0, "regex")!=-1) {
         vn=$search_end
         ve=search_string($ENVSTR, "\n", vn, "regex")
         if(ve>=vn) return substring($ENVSTR, vn, ve)
      }
   }
   return ""
}

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Released on Wed, 21 Nov 2001 by C. Denat

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