Simple line-oriented config file parser.


Comment lines have a hash "#" as initial non-white-space token
	|# This is a comment line
	|  # This comment line has initial white space.
	|tag # this is not a comment!

Empty lines, white-space only or comment lines, are ignored.


tag lines
<tag> <ws> <val> <ws> <val> <ws> <val> <EOL>

E.G.
	# Comment line
	# abc is a tag, def is the argument
	abc def
	# 3 arguments
	xyzzy 1 2 3

In main program:
	#include <cfgf.h>
	int func_abc(int argc, const char** argv) {
	   ...
	   return 0;
	}
	int func_xyzzy(int argc, const char** argv) {
	   ...
	   return 0;
	}
	cfgf_tagtab_t tab[] = {
		{ "abc", 1, func_abc },
		{ "xyzzy", 3, func_xyzzy },
		{ 0,0,0 } /* Terminator*/
	};

	int main()
	{
	  if ( cfgf_read_file( config_file_name, tab) )
	    fprintf(stderr,"Bad config file\n");
	}