From b5072525db877edaf2194fa5decbd19f6fc51600 Mon Sep 17 00:00:00 2001
From: Maik Fischer <maikf@qu.cx>
Date: Thu, 26 Oct 2017 13:38:16 +0200
Subject: [PATCH] kasse: use cgetn_input() to simplify logic

---
 include/general.h | 1 +
 src/general.c     | 7 ++++++-
 src/kasse.c       | 7 ++-----
 3 files changed, 9 insertions(+), 6 deletions(-)

diff --git a/include/general.h b/include/general.h
index 82a0db9..e07176e 100644
--- a/include/general.h
+++ b/include/general.h
@@ -12,6 +12,7 @@ typedef input_terminator_t input_terminator_mask_t;
 input_terminator_t get_input_terminated_by(input_terminator_mask_t terminators,
                                            char *out, BYTE outlen);
 char *get_input(void);
+BYTE cgetn_input(char *s, BYTE len);
 void cget_return(void);
 char retry_or_quit(void);
 char *format_euro(char *s, int maxlen, int cent);
diff --git a/src/general.c b/src/general.c
index 87cdd07..91318aa 100644
--- a/src/general.c
+++ b/src/general.c
@@ -66,7 +66,12 @@ char *get_input(void) {
   return output;
 }
 
-/* wait until user pressed RETURN, ignore all other input */
+BYTE cgetn_input(char *s, BYTE len) {
+  memset(s, '\0', len);
+  get_input_terminated_by(INPUT_TERMINATOR_RETURN, s, len);
+  return strlen(s);
+}
+
 void cget_return() {
   BYTE c;
   while (1) {
diff --git a/src/kasse.c b/src/kasse.c
index aa112f3..b59d44d 100644
--- a/src/kasse.c
+++ b/src/kasse.c
@@ -348,15 +348,12 @@ void buy_custom(void) {
   BYTE c = 0, i = 0;
   int negative = 1;
   char entered[5] = {'1', 0, 0, 0, 0};
-  char *input, name[20];
+  char name[MAX_ITEM_NAME_LENGTH + 1];
   int price;
 
   clrscr();
-  memset(name, '\0', sizeof(name));
   cprintf("\r\nWas soll gekauft werden?\r\n");
-  input = get_input();
-  strncpy(name, input, sizeof(name));
-  if (*name == '\0')
+  if (cgetn_input(name, sizeof(name)) == 0)
     return;
 
   cprintf("\r\nWie teuer ist \"%s\" (in cents)?\r\n", name);
-- 
2.39.2