Compiler/Simple file inclusion pre processor: Difference between revisions

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 Since Julia already has an include function, adding another seems superfluous.  However, one can be created for the purpose, and will be shown below.  Such a Julia program could be compiled and run as the file <code>preprocess.jl</code>.
+To use the program, run <code>julia preprocess.jl infile.jl outfile.jl</code> and include files using
+the standard Julia syntax. Calls to the <code>include</code> function that contain a single argument which is a string in parentheses will be preproccessed.  Other calls to <code>include</code> with different arguments will not be preprocessed by <code>preprocess.jl</code>.
 <lang julia># preprocess.jl convert includes to file contenets
-infile = length(ARGS) < 1 ? stdin : ARGS[1]
+infile = length(ARGS) > 0 ? ARGS[1] : stdin
-outfile = length(ARGS) < 2 ? stdout : ARGS[2]
+outfile = length(ARGS) > 1 ? ARGS[2] : stdout
 function includefile(s)
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 input = read(infile, String)
+output = replace(input, r"\sinclude\(\"[^\"]+\"\)\s" => includefile)
-output = replace(input, r"\sinclude\(\"[^\"]+\"\s\)" => includefile)
 write(outfile, output)
 </lang>