--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lwcc/cpp/lwcpp.c	Fri Jan 13 22:32:15 2012 -0700
@@ -0,0 +1,168 @@
+/*
+
+This is the main source for lwcpp, the C preprocessor
+
+Copyright © 2012 William Astle
+
+This file is part of LWTOOLS.
+
+LWTOOLS is free software: you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation, either version 3 of the License, or (at your option) any later
+version.
+
+This program is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+more details.
+
+You should have received a copy of the GNU General Public License along with
+this program. If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <lw_alloc.h>
+#include <lw_string.h>
+
+/* command line option handling */
+#define PROGVER "lwcpp from " PACKAGE_STRING
+char *program_name;
+
+/* global state */
+char *output_file = NULL;
+int debug_level = 0;
+
+static void do_help(void);
+static void do_usage(void);
+
+/*
+NOTE:
+
+We can't actually use a standard option parser here due to a raft of weird
+command line syntax and we want to be somewhat compatible with various
+other tools. That means we have a built-in help text that is preformatted.
+
+*/
+
+#define OPTARG(dest,src)	do { char *___s = (src); if (!*___s) { if (i < argc) ___s = argv[i++]; else { fprintf(stderr, "Option %s requires an argument\n", arg); } } (dest) = ___s; } while (0)
+static void parse_cmdline(int argc, char **argv)
+{
+	int i = 1;
+	int eargs = 0;
+	char *arg;
+	
+	while (i < argc)
+	{
+		arg = argv[i++];
+		if (!eargs && arg[0] == '-' && arg[1] != 0)
+		{
+			/* we have an option here */
+			if (arg[1] == '-' && arg[2] == 0)
+			{
+				eargs = 1;
+				continue;
+			}
+			
+			/* consume the '-' */
+			arg++;
+			if (!strcmp(arg, "-help") || !strcmp(arg, "?"))
+			{
+				/* --help */
+				do_help();
+				exit(0);
+			}
+			else if (!strcmp(arg, "-usage"))
+			{
+				/* --usage */
+				do_usage();
+				exit(0);
+			}
+			else if (!strcmp(arg, "version") || !strcmp(arg, "-version"))
+			{
+				/* --version */
+				printf("%s\n", PROGVER);
+				exit(0);
+			}
+			
+			switch (*arg)
+			{
+			case 'o':
+				if (output_file)
+					lw_free(output_file);
+				OPTARG(output_file, arg + 1);
+				continue;
+			
+			case 'd':
+				if (!arg[1])
+					debug_level = 50;
+				else
+					debug_level = atoi(arg + 1);
+				continue;
+			}
+			
+			fprintf(stderr, "Unknown option: %s\n", arg);
+		}
+		else
+		{
+			/* we have an input file here */
+			printf("Input file: %s\n", arg);
+		}
+	}
+}
+
+/*
+static struct lw_cmdline_parser cmdline_parser =
+{
+	options,
+	parse_opts,
+	"INPUTFILE",
+	"lwcc, a HD6309 and MC6809 cross-compiler\vPlease report bugs to lost@l-w.ca.",
+	PROGVER
+};
+*/
+int main(int argc, char **argv)
+{
+	program_name = argv[0];
+
+	parse_cmdline(argc, argv);
+
+	if (!output_file)
+	{
+		output_file = lw_strdup("a.out");
+	}
+
+	exit(0);
+}
+
+void do_usage(void)
+{
+	printf(
+		"Usage: %1$s [options] <input file>\n"
+		"       %1$s --help\n"
+		"       %1$s --version\n"
+		"       %1$s --usage\n",
+		program_name
+	);
+}
+
+void do_help(void)
+{
+	printf(
+		"Usage: %s [options] <input file>\n"
+		"lwcpp, the lwtools C preprocessor\n"
+		"\n"
+		"  -d[LEVEL]                   enable debug output, optionally set verbosity\n"
+		"                              level to LEVEL\n"
+		"  -o FILE                     specify the output file name\n"
+		"  -?, --help                  give this help message\n"
+		"  --usage                     print a short usage message\n"
+		"  -version, --version         print program version\n"
+		"\n"
+		"Please report bugs to lost@l-w.ca.\n",
+		program_name
+	);
+}