X-Git-Url: http://deadsoftware.ru/gitweb?p=dsw-obn.git;a=blobdiff_plain;f=src%2Fmain.c;h=05ea89235061fc67b83013bfd2386ebeb2e3cbc4;hp=a97f2d7d71606da039bf0ded4764654dd8b64005;hb=HEAD;hpb=bc1691627adee054210acf7e801361fa574f8086

diff --git a/src/main.c b/src/main.c
index a97f2d7..05ea892 100644
--- a/src/main.c
+++ b/src/main.c
@@ -3,56 +3,137 @@
 #include <string.h>
 #include <assert.h>
 
-#include "../include/oberon.h"
+#include "oberon-internals.h"
+#include "generator.h"
+
+struct string_stack
+{
+	char * string;
+	struct string_stack * next;
+};
 
 static oberon_context_t * ctx;
 static oberon_module_t * mod;
+static const char * module;
+static const char * out_path;
+static struct string_stack * path_list;
+
+static void
+add_to_stack(struct string_stack ** stack, char * string)
+{
+	struct string_stack * p = malloc(sizeof *p);
+	p -> string = string;
+	p -> next = *stack;
+	*stack = p;
+}
+
+static FILE *
+open_file(struct string_stack * path, const char * ext, const char * name, const char * mode, oberon_scanner_t * res)
+{
+	char fname[256];
+	memset(fname, 0, 256);
+
+	FILE * fp = NULL;
+	while(fp == NULL && path != NULL)
+	{
+		snprintf(fname, 256, "%s/%s.%s", path -> string, name, ext);
+		fp = fopen(fname, mode);
+		path = path -> next;
+	}
+
+	if(fp == NULL)
+	{
+		snprintf(fname, 256, "%s.%s", name, ext);
+		fp = fopen(fname, mode);
+	}
+
+	size_t len = strlen(fname);
+	res -> source = malloc(len + 1);
+	memcpy(res -> source, fname, len + 1);
+
+	return fp;
+}
 
-static const char *
+static oberon_scanner_t *
 import_module(const char * name)
 {
-	assert(name);
+	oberon_scanner_t * res = malloc(sizeof *res);
+	memset(res, 0, sizeof *res);
 
 	FILE * fp;
-	char fname[256];
-	snprintf(fname, 256, "%s.obn", name);
-	fp = fopen(fname, "r");
+	fp = open_file(path_list, "obn", name, "r", res);
 	if(fp == NULL)
 	{
-		printf("can't open file %s\n", fname);
-		exit(1);
 		return NULL;
 	}
 
-	char * source;
 	size_t len;
 
 	fseek(fp, 0, SEEK_END);
 	len = ftell(fp);
 	fseek(fp, 0, SEEK_SET);
 
-	source = calloc(1, len + 1);
-	fread(source, len, 1, fp);
+	res -> code = calloc(1, len + 1);
+	fread(res -> code, len, 1, fp);
 
-	return source;
+	return res;
+}
+
+static void
+init(int argc, char ** argv)
+{
+	int i = 1;
+	out_path = ".";
+
+	while(argc > 2)
+	{
+		if(argc > 2 && strcmp(argv[i], "-d") == 0)
+		{
+			out_path = argv[i + 1];
+			argc -= 2;
+			i += 2;
+		}
+		else if(argc > 2 && strcmp(argv[i], "-I") == 0)
+		{
+			add_to_stack(&path_list, argv[i + 1]);
+			argc -= 2;
+			i += 2;
+		}
+		else
+		{
+			break;
+		}
+	}
+
+	if(argc != 2 || argv[i][0] == '-')
+	{
+		printf("usage: obn [-d out_dir] module\n");
+		exit(1);
+	}
+
+	module = argv[i];
 }
 
 int
 main(int argc, char ** argv)
 {
-	const char * code;
+	oberon_scanner_t * s;
 
-	if(argc != 2)
+	init(argc, argv);
+
+	s = import_module(module);
+	if(s == NULL)
 	{
-		printf("use: %s <module>\n", argv[0]);
-		return 1;
+		printf("can't open module source %s\n", module);
+		return 0;
 	}
 
-	code = import_module(argv[1]);
-
 	ctx = oberon_create_context(import_module);
-	mod = oberon_compile_module(ctx, code);
+	oberon_set_out_directory(ctx, out_path);
+
+	mod = oberon_compile_module(ctx, s);
 
 	oberon_destroy_context(ctx);
+
 	return 0;
 }