[RFC PATCH 12/28] cli: lil: Check for ctrl-c

[Sean Anderson <seanga2@gmail.com>]

Check for ctrl-c in lil_parse. This works out to around every time a
function or command is called. We also check at the beginning of
lil_eval_expr so that constructs like

	while {1} {}

get interrupted. Since there are no non-trivial commands in that example,
lil_parse never gets to its ctrlc check. However, we do need to evaluate
the loop expression, so that's a good place to put a check.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
---

 common/cli_lil.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/common/cli_lil.c b/common/cli_lil.c
index c19a25b2bf..50e314a643 100644
--- a/common/cli_lil.c
+++ b/common/cli_lil.c
@@ -10,6 +10,7 @@
 
 #include <common.h>
 #include <cli_lil.h>
+#include <console.h>
 #include <ctype.h>
 #include <stdlib.h>
 #include <stdio.h>
@@ -1117,6 +1118,11 @@ struct lil_value *lil_parse(struct lil *lil, const char *code, size_t codelen,
 			lil_free_value(val);
 		val = NULL;
 
+		if (ctrlc()) {
+			lil_set_error(lil, LIL_ERR_INTR, "interrupted");
+			goto cleanup;
+		}
+
 		words = substitute(lil);
 		if (!words || lil->err)
 			goto cleanup;
@@ -1671,6 +1677,11 @@ struct lil_value *lil_eval_expr(struct lil *lil, struct lil_value *code)
 {
 	struct expreval ee;
 
+	if (ctrlc()) {
+		lil_set_error(lil, LIL_ERR_INTR, "interrupted");
+		return NULL;
+	}
+
 	code = lil_subst_to_value(lil, code);
 	if (lil->err)
 		return NULL;
-- 
2.32.0