# requirez(commandLine.awk)
BEGIN { Who  = "Tim Menzies";
        What = "bars";
        When = "2006";
        How  = "b:cd:hk:m:nt:v:w:B";
        Why  = "show column data as histograms";
}
function usage() {  about(Who,What,When,Why);
 prints("Usage: "What" [FLAGS] FILE"," ",
        "FILE is columns of data."," ",
	    " -b NUM    width of bars; default=["Col3"]",
        " -c        show copyright",
        " -d CHAR   field seperator",
        " -h        show help",
        " -k NUM    width of 'key' column;default=["Col1"]",
		" -m CHAR   character to draw one histogram dot; default=["Mark"]",
	    " -n        no sorting of keys",
	    " -t NUM    target column; default=["Collect"]",
	    " -v NUM    width of 'value' column; default=["Col2"]",
        " -w NUM    width of each data bin; default=["Round"]",
		" -B        displays all bins including empty bins");
}
function defaults() {
	    NoSort=0;
        inits(How,"-b 20 -d , -k 4 -m * -t 2 -v 3 -w 10");
}
function set(x,y) {
		if (x == "b")  {return Col3=y     };
        if (x == "c")  {copyleft();   exit};
        #if (x == "d")  {return FS=","     };
        if (x == "d")  {return FS=y       };
        if (x == "h")  {usage();      exit};
		if (x == "k")  {return Col1=y     };
		if (x == "m")  {return Mark=y     };
		if (x == "n")  {return NoSort=1   };
		if (x == "t")  {return Collect=y  };
		if (x == "v")  {return Col2=y     };
		if (x == "w")  {return Round=y     };
		if (x == "B")  {return DispEmpty=1	};
        bad(x "? usage: " What " " How); exit;
}