--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lwcc/cc-main.c	Sat Sep 21 13:53:18 2013 -0600
@@ -0,0 +1,259 @@
+/*
+lwcc/cpp-main.c
+
+Copyright © 2013 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 <errno.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <lw_stringlist.h>
+#include <lw_cmdline.h>
+#include <lw_string.h>
+
+#include "cpp.h"
+
+int process_file(const char *);
+static void do_error(const char *f, ...);
+
+/* command line option handling */
+#define PROGVER "lwcc-cc from " PACKAGE_STRING
+char *program_name;
+
+/* input files */
+lw_stringlist_t input_files;
+lw_stringlist_t includedirs;
+lw_stringlist_t sysincludedirs;
+lw_stringlist_t macrolist;
+
+/* various flags */
+int trigraphs = 0;
+char *output_file = NULL;
+FILE *output_fp = NULL;
+
+static struct lw_cmdline_options options[] =
+{
+	{ "output",		'o',	"FILE",		0,							"Output to FILE"},
+	{ "include",	'i',	"FILE",		0,							"Pre-include FILE" },
+	{ "includedir",	'I',	"PATH",		0,							"Add entry to the user include path" },
+	{ "sincludedir", 'S',	"PATH",		0,							"Add entry to the system include path" },
+	{ "define", 	'D',	"SYM[=VAL]",0, 							"Automatically define SYM to be VAL (or 1)"},
+	{ "trigraphs",	0x100,	NULL,		0,							"Enable interpretation of trigraphs" },
+	{ 0 }
+};
+
+static int parse_opts(int key, char *arg, void *state)
+{
+	switch (key)
+	{
+	case 'o':
+		if (output_file)
+			do_error("Output file specified more than once.");
+		output_file = arg;
+		break;
+		
+	case 0x100:
+		trigraphs = 1;
+		break;
+
+	case 'I':
+		lw_stringlist_addstring(includedirs, arg);
+		break;
+	
+	case 'S':
+		lw_stringlist_addstring(sysincludedirs, arg);
+		break;
+
+	case 'D':
+		lw_stringlist_addstring(macrolist, arg);
+		break;
+		
+	case lw_cmdline_key_end:
+		break;
+	
+	case lw_cmdline_key_arg:
+		lw_stringlist_addstring(input_files, arg);
+		break;
+		
+	default:
+		return lw_cmdline_err_unknown;
+	}
+	return 0;
+}
+
+static struct lw_cmdline_parser cmdline_parser =
+{
+	options,
+	parse_opts,
+	"INPUTFILE",
+	"lwcc-cc - C compiler for lwcc",
+	PROGVER
+};
+
+int main(int argc, char **argv)
+{
+	program_name = argv[0];
+	int retval = 0;
+	
+	input_files = lw_stringlist_create();
+	includedirs = lw_stringlist_create();
+	sysincludedirs = lw_stringlist_create();
+	macrolist = lw_stringlist_create();
+	
+	/* parse command line arguments */	
+	lw_cmdline_parse(&cmdline_parser, argc, argv, 0, 0, NULL);
+
+	/* set up output file */
+	if (output_file == NULL || strcmp(output_file, "-") == 0)
+	{
+		output_fp = stdout;
+	}
+	else
+	{
+		output_fp = fopen(output_file, "wb");
+		if (output_fp == NULL)
+		{
+			do_error("Failed to create output file %s: %s", output_file, strerror(errno)); 
+		}
+	}
+	
+	if (lw_stringlist_nstrings(input_files) == 0)
+	{
+		/* if no input files, work on stdin */
+		retval = process_file("-");
+	}
+	else
+	{
+		char *s;
+		lw_stringlist_reset(input_files);
+		for (s = lw_stringlist_current(input_files); s; s = lw_stringlist_next(input_files))
+		{
+			retval = process_file(s);
+			if (retval != 0)
+				break;
+		}
+	}
+	lw_stringlist_destroy(input_files);
+	lw_stringlist_destroy(includedirs);
+	lw_stringlist_destroy(sysincludedirs);
+	lw_stringlist_destroy(macrolist);
+	exit(retval);
+}
+
+static void print_line_marker(FILE *fp, int line, const char *fn, int flag)
+{
+	fprintf(fp, "\n# %d \"", line);
+	while (*fn)
+	{
+		if (*fn < 32 || *fn == 34 || *fn > 126)
+		{
+			fprintf(fp, "\\%03o", *fn);
+		}
+		else
+		{
+			fprintf(fp, "%c", *fn);
+		}
+		fn++;
+	}
+	fprintf(fp, "\" %d", flag);
+}
+
+int process_file(const char *fn)
+{
+	struct preproc_info *pp;
+	struct token *tok = NULL;
+	int last_line = 0;
+	char *last_fn = NULL;
+	char *tstr;
+		
+	pp = preproc_init(fn);
+	if (!pp)
+		return -1;
+
+	/* set up the include paths */
+	lw_stringlist_reset(includedirs);
+	for (tstr = lw_stringlist_current(includedirs); tstr; tstr = lw_stringlist_next(includedirs))
+	{
+		preproc_add_include(pp, tstr, 0);
+	}
+
+	lw_stringlist_reset(sysincludedirs);
+	for (tstr = lw_stringlist_current(sysincludedirs); tstr; tstr = lw_stringlist_next(sysincludedirs))
+	{
+		preproc_add_include(pp, tstr, 1);
+	}
+
+	/* set up pre-defined macros */
+	lw_stringlist_reset(macrolist);
+	for (tstr = lw_stringlist_current(macrolist); tstr; tstr = lw_stringlist_next(macrolist))
+	{
+		preproc_add_macro(pp, tstr);
+	}
+
+	print_line_marker(output_fp, 1, fn, 1);
+	last_fn = lw_strdup(fn);	
+	for (;;)
+	{
+		tok = preproc_next(pp);
+		if (tok -> ttype == TOK_EOF)
+			break;
+		if (strcmp(tok -> fn, last_fn) != 0)
+		{
+			int lt = 1;
+			if (tok -> lineno != 1)
+			{
+				lt = 2;
+			}
+			lw_free(last_fn);
+			last_fn = lw_strdup(tok -> fn);
+			last_line = tok -> lineno;
+			print_line_marker(output_fp, last_line, last_fn, lt);
+		}
+		else
+		{
+			while (tok -> lineno > last_line)
+			{
+				fprintf(output_fp, "\n");
+				last_line++;
+			}
+		}
+		token_print(tok, output_fp);
+		if (tok -> ttype == TOK_EOL)
+			last_line++;
+		token_free(tok);
+	}
+	token_free(tok);
+	lw_free(last_fn);
+//	symtab_dump(pp);
+	preproc_finish(pp);
+	return 0;
+}
+
+static void do_error(const char *f, ...)
+{
+	va_list args;
+	va_start(args, f);
+	fprintf(stderr, "ERROR: ");
+	vfprintf(stderr, f, args);
+	va_end(args);
+	fprintf(stderr, "\n");
+	exit(1);
+}