X-Git-Url: https://rtime.felk.cvut.cz/gitweb/l4.git/blobdiff_plain/3cad43658cb8e7fddfa0d985e79b35737f686359..fd980739ae24a91109f0a29eb2792a9136ff5013:/kernel/fiasco/tool/kconfig/scripts/kconfig/expr.c

diff --git a/kernel/fiasco/tool/kconfig/scripts/kconfig/expr.c b/kernel/fiasco/tool/kconfig/scripts/kconfig/expr.c
index edd3f39a0..d83f23228 100644
--- a/kernel/fiasco/tool/kconfig/scripts/kconfig/expr.c
+++ b/kernel/fiasco/tool/kconfig/scripts/kconfig/expr.c
@@ -1097,9 +1097,32 @@ void expr_fprint(struct expr *e, FILE *out)
 
 static void expr_print_gstr_helper(void *data, struct symbol *sym, const char *str)
 {
-	str_append((struct gstr*)data, str);
+	struct gstr *gs = (struct gstr*)data;
+	const char *sym_str = NULL;
+
+	if (sym)
+		sym_str = sym_get_string_value(sym);
+
+	if (gs->max_width) {
+		unsigned extra_length = strlen(str);
+		const char *last_cr = strrchr(gs->s, '\n');
+		unsigned last_line_length;
+
+		if (sym_str)
+			extra_length += 4 + strlen(sym_str);
+
+		if (!last_cr)
+			last_cr = gs->s;
+
+		last_line_length = strlen(gs->s) - (last_cr - gs->s);
+
+		if ((last_line_length + extra_length) > gs->max_width)
+			str_append(gs, "\\\n");
+	}
+
+	str_append(gs, str);
 	if (sym)
-		str_printf((struct gstr*)data, " [=%s]", sym_get_string_value(sym));
+		str_printf(gs, " [=%s]", sym_str);
 }
 
 void expr_gstr_print(struct expr *e, struct gstr *gs)