1 files changed, 70 insertions, 0 deletions

diff --git a/lib/libpkg/msg.c b/lib/libpkg/msg.c
new file mode 100644
index 000000000000..0d25ad199007
--- /dev/null
+++ b/lib/libpkg/msg.c
@@ -0,0 +1,70 @@
+/*
+ * FreeBSD install - a package for the installation and maintainance
+ * of non-core utilities.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * Jordan K. Hubbard
+ * 18 July 1993
+ *
+ * Miscellaneous message routines.
+ *
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include "pkg.h"
+#include <err.h>
+#include <paths.h>
+
+/* Die a relatively simple death */
+void
+upchuck(const char *message)
+{
+    cleanup(0);
+    errx(1, "fatal error during execution: %s", message);
+}
+
+/*
+ * As a yes/no question, prompting from the varargs string and using
+ * default if user just hits return.
+ */
+Boolean
+y_or_n(Boolean def, const char *msg, ...)
+{
+    va_list args;
+    int ch = 0;
+    FILE *tty;
+
+    va_start(args, msg);
+    /*
+     * Need to open /dev/tty because file collection may have been
+     * collected on stdin
+     */
+    tty = fopen(_PATH_TTY, "r");
+    if (!tty) {
+	cleanup(0);
+	errx(2, "can't open %s!", _PATH_TTY);
+    }
+    while (ch != 'Y' && ch != 'N') {
+	vfprintf(stderr, msg, args);
+	if (def)
+	    fprintf(stderr, " [yes]? ");
+	else
+	    fprintf(stderr, " [no]? ");
+	fflush(stderr);
+	ch = toupper(fgetc(tty));
+	if (ch == '\n')
+	    ch = (def) ? 'Y' : 'N';
+    }
+    fclose(tty) ;
+    return (ch == 'Y') ? TRUE : FALSE;
+}