From: Bastian Dehn <hhaalo@arcor.de>
Date: Sat, 3 Feb 2024 12:27:54 +0000 (+0100)
Subject: add cancel
X-Git-Tag: v1.0.0^2~362
X-Git-Url: https://gitweb.hhaalo.de/?a=commitdiff_plain;h=a55da63e1006deb772b64528b490b45ab1fea6a7;p=sane-kds-s2000w-net.git

add cancel
---

diff --git a/src/kds_s2000w_net.c b/src/kds_s2000w_net.c
index e465452..37e798c 100644
--- a/src/kds_s2000w_net.c
+++ b/src/kds_s2000w_net.c
@@ -8,6 +8,7 @@
 
 SANE_Option_Descriptor* option_descriptors = NULL;
 SANE_Device* device_info = NULL;
+int cancel = 0;
 
 SANE_Status _sane_kds_s2000w_net_init(SANE_Int* version_code, SANE_Auth_Callback authorize)
 {
@@ -180,6 +181,7 @@ SANE_Status _sane_kds_s2000w_net_get_parameters(SANE_Handle handle,
 
 SANE_Status _sane_kds_s2000w_net_start(SANE_Handle handle)
 {
+	cancel = 0;
 	return SANE_STATUS_GOOD;
 }
 
@@ -187,7 +189,11 @@ SANE_Status _sane_kds_s2000w_net_read(SANE_Handle handle, SANE_Byte* data,
 	SANE_Int max_length, SANE_Int* length)
 {
 	int length_count = 0;
-	while(length_count < max_length) {	
+	while(length_count < max_length) {
+		if (cancel) {
+			*length = 0;
+			return SANE_STATUS_CANCELLED;
+		}
 		data[length_count] = 0;
 		length_count++;
 	}
@@ -199,6 +205,7 @@ SANE_Status _sane_kds_s2000w_net_read(SANE_Handle handle, SANE_Byte* data,
 
 void _sane_kds_s2000w_net_cancel(SANE_Handle handle)
 {
+	cancel = 1;
 	return;
 }