screen_utils: add function screen_get_yesno

diff --git a/src/screen_utils.c b/src/screen_utils.c
index 1203a938c8c4ca657c1f31b2a78bb7b316e470ce..8889ac13277b8b8cb0b2edf53609847bc469ae80 100644 (file)
--- a/src/screen_utils.c
+++ b/src/screen_utils.c
@@ -27,6 +27,7 @@
 #include "wreadln.h"
 
 #include <mpd/client.h>
+#include <ctype.h>
 
 void
 screen_bell(void)
@@ -66,6 +67,21 @@ screen_getch(const char *prompt)
        return key;
 }
 
+bool
+screen_get_yesno(const char *prompt, bool def)
+{
+       /* NOTE: if one day a translator decides to use a multi-byte character
+          for one of the yes/no keys, we'll have to parse it properly */
+
+       int key = tolower(screen_getch(prompt));
+       if (key == YES[0])
+               return true;
+       else if (key == NO[0])
+               return false;
+       else
+               return def;
+}
+
 char *
 screen_readln(const char *prompt,
              const char *value,

diff --git a/src/screen_utils.h b/src/screen_utils.h
index 1691e2b7edf83df8411b5fcf41df7198cf91f077..c418142a2d526e7dae96fd320e61ddb7eefadc38 100644 (file)
--- a/src/screen_utils.h
+++ b/src/screen_utils.h
@@ -32,6 +32,15 @@ void screen_bell(void);
 /* read a character from the status window */
 int screen_getch(const char *prompt);
 
+/**
+ * display a prompt, wait for the user to press a key, and compare it with
+ * the default keys for "yes" and "no" (and their upper-case pendants).
+ *
+ * @returns true, if the user pressed the key for "yes"; false, if the user
+ *         pressed the key for "no"; def otherwise
+ */
+bool screen_get_yesno(const char *prompt, bool def);
+
 char *
 screen_read_password(const char *prompt);