From defab3aeca9d460cf07267a2d1f59146f5528e65 Mon Sep 17 00:00:00 2001
From: Maik Fischer <maikf@qu.cx>
Date: Thu, 26 Oct 2017 12:07:00 +0200
Subject: [PATCH] use cget_return() to wait for a RETURN key press

---
 include/general.h    |  1 +
 src/credit_manager.c |  6 +++---
 src/general.c        | 11 +++++++++++
 src/itemz.c          |  2 +-
 src/kasse.c          | 12 ++++++------
 5 files changed, 22 insertions(+), 10 deletions(-)

diff --git a/include/general.h b/include/general.h
index 66294bf..82a0db9 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);
+void cget_return(void);
 char retry_or_quit(void);
 char *format_euro(char *s, int maxlen, int cent);
 void c128_perror(BYTE, char *);
diff --git a/src/credit_manager.c b/src/credit_manager.c
index 347326a..728aa32 100644
--- a/src/credit_manager.c
+++ b/src/credit_manager.c
@@ -90,7 +90,7 @@ void deposit_credit(char *input) {
 
   print_the_buffer();
   cprintf("\r\nEinzahlung durchgef" uUML "hrt, dr" uUML "cke RETURN...\r\n");
-  input = get_input();
+  cget_return();
 }
 
 static void new_credit(void) {
@@ -101,7 +101,7 @@ static void new_credit(void) {
   if (credits.num_items == 75) {
     cprintf("\rEs ist bereits die maximale Anzahl an Eintr" aUML
             "gen erreicht, dr" uUML "cke RETURN...\r\n");
-    input = get_input();
+    cget_return();
     return;
   }
 
@@ -189,7 +189,7 @@ void credit_manager() {
       return;
     default:
       cprintf("Unbekannter Befehl, dr" uUML "cke RETURN...\r\n");
-      get_input();
+      cget_return();
     }
   }
 }
diff --git a/src/general.c b/src/general.c
index ec06ef4..87cdd07 100644
--- a/src/general.c
+++ b/src/general.c
@@ -66,6 +66,17 @@ char *get_input(void) {
   return output;
 }
 
+/* wait until user pressed RETURN, ignore all other input */
+void cget_return() {
+  BYTE c;
+  while (1) {
+    c = cgetc();
+    if (c == PETSCII_CR) {
+      return;
+    }
+  }
+}
+
 char retry_or_quit(void) {
   char *c;
   do {
diff --git a/src/itemz.c b/src/itemz.c
index f04678c..7751b68 100644
--- a/src/itemz.c
+++ b/src/itemz.c
@@ -128,7 +128,7 @@ static void itemz_manager() {
       exit(0);
     default:
       cprintf("Unbekannter Befehl, druecke RETURN...\r\n");
-      get_input();
+      cget_return();
     }
   }
 }
diff --git a/src/kasse.c b/src/kasse.c
index 734599a..aa112f3 100644
--- a/src/kasse.c
+++ b/src/kasse.c
@@ -177,7 +177,7 @@ static signed int buy(char *name, unsigned int price) {
     }
     if (c == PETSCII_ESC) {
       cprintf("Kauf abgebrochen, dr" uUML "cke RETURN...\r\n");
-      get_input();
+      cget_return();
       return 1;
     }
     if (c == '-' && i == 0) {
@@ -309,14 +309,14 @@ static signed int buy(char *name, unsigned int price) {
               "cke RETURN...\r\n",
               nickname, rest);
       textcolor(TC_LIGHT_GRAY);
-      get_input();
+      cget_return();
       matches++;
     } else {
       textcolor(TC_LIGHT_RED);
       cprintf("\r\nNickname nicht gefunden in der Guthabenverwaltung! Abbruch, "
               "dr" uUML "cke RETURN...\r\n");
       textcolor(TC_LIGHT_GRAY);
-      get_input();
+      cget_return();
       return 0;
     }
   } else {
@@ -336,7 +336,7 @@ static signed int buy(char *name, unsigned int price) {
 void buy_stock(BYTE n) {
   if (n >= status.num_items || status.status[n].item_name == NULL) {
     cprintf("FEHLER: Diese Einheit existiert nicht.\r\n");
-    get_input();
+    cget_return();
     return;
   }
 
@@ -367,7 +367,7 @@ void buy_custom(void) {
     cputc(c);
     if (c == PETSCII_ESC) {
       cprintf("Kauf abgebrochen, dr" uUML "cke RETURN...\r\n");
-      get_input();
+      cget_return();
       return;
     } else if (c == '-' && i == 0)
       negative = -1;
@@ -472,7 +472,7 @@ int main(void) {
       log_flush();
       cprintf("ok\r\nStatefile/Creditfile/Log gesichert, dr" uUML
               "cke RETURN...\r\n");
-      get_input();
+      cget_return();
     } else if (*c == 'g') {
       credit_manager();
     } else if (*c == 'z') {
-- 
2.39.5