Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / ipxe / src / include / readline / readline.h

diff --git a/qemu/roms/ipxe/src/include/readline/readline.h b/qemu/roms/ipxe/src/include/readline/readline.h
new file mode 100644 (file)
index 0000000..0449a3f
--- /dev/null
+++ b/qemu/roms/ipxe/src/include/readline/readline.h
@@ -0,0 +1,57 @@
+#ifndef _READLINE_H
+#define _READLINE_H
+
+/** @file
+ *
+ * Minmal readline
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+/** A readline history entry */
+struct readline_history_entry {
+       /** Persistent copy of string */
+       char *string;
+       /** Temporary copy of string
+        *
+        * The temporary copy exists only during the call to
+        * readline().
+        */
+       char *temp;
+};
+
+/** Maximum depth of a readline history buffer
+ *
+ * Must be one less than a power of two.
+ */
+#define READLINE_HISTORY_MAX_DEPTH ( ( 1 << 3 ) - 1 )
+
+/** A readline history buffer */
+struct readline_history {
+       /** History entries
+        *
+        * This is a circular buffer, with entries in chronological
+        * order.  The "next" entry is always empty except during a
+        * call to readline().
+        */
+       struct readline_history_entry entries[READLINE_HISTORY_MAX_DEPTH + 1];
+       /** Position of next entry within buffer
+        *
+        * This is incremented monotonically each time an entry is
+        * added to the buffer.
+        */
+       unsigned int next;
+       /** Current depth within history buffer
+        *
+        * This is valid only during the call to readline()
+        */
+       unsigned int depth;
+};
+
+extern void history_free ( struct readline_history *history );
+extern int readline_history ( const char *prompt, const char *prefill,
+                             struct readline_history *history, char **line );
+extern char * __malloc readline ( const char *prompt );
+
+#endif /* _READLINE_H */