io: add linux support

io/sys/windows/path.c

@@ -123,7 +123,7 @@ struct fx_path *fx_path_create_from_cstr(const char *cstr)
 		prev = c;
 	}
 
-	while (fx_string_back(path->pathstr) == '/') {
+	while (fx_string_get_last_char(path->pathstr) == '/') {
 		fx_string_pop_back(path->pathstr);
 	}
 
@@ -138,8 +138,8 @@ static void append_path(struct fx_path *dest, const struct fx_path *src)
 		return;
 	}
 
-	if (fx_string_back(dest->pathstr) != '/'
-	    && fx_string_front(src->pathstr) != '/') {
+	if (fx_string_get_last_char(dest->pathstr) != '/'
+	    && fx_string_get_first_char(src->pathstr) != '/') {
 		char s[] = {'/', 0};
 		fx_string_append_cstr(dest->pathstr, s);
 	}
@@ -181,7 +181,7 @@ struct fx_path *fx_path_make_canonical(const struct fx_path *in)
 
 bool fx_path_is_absolute(const struct fx_path *path)
 {
-	const char *s = fx_string_ptr(path->pathstr);
+	const char *s = fx_string_get_cstr(path->pathstr);
 
 	size_t i;
 	for (i = 0; s[i]; i++) {
@@ -231,7 +231,7 @@ bool fx_path_is_directory(const struct fx_path *path)
 
 const char *fx_path_ptr(const struct fx_path *path)
 {
-	return fx_string_ptr(path->pathstr);
+	return fx_string_get_cstr(path->pathstr);
 }
 
 void path_release(struct fx_dsref* obj)
@@ -244,5 +244,5 @@ void path_to_string(struct fx_dsref* obj, struct fx_stringstream* out)
 {
 	struct fx_path *path = (struct fx_path *)obj;
 
-	fx_stringstream_add(out, fx_string_ptr(path->pathstr));
+	fx_stringstream_add(out, fx_string_get_cstr(path->pathstr));
 }