1 files changed, 108 insertions, 0 deletions
diff --git a/cmd-show-prompt-history.c b/cmd-show-prompt-history.c
new file mode 100644
index 0000000..c85950b
--- /dev/null
+++ b/cmd-show-prompt-history.c
@@ -0,0 +1,108 @@
+/* $OpenBSD$ */
+
+/*
+ * Copyright (c) 2021 Anindya Mukherjee <anindya49@hotmail.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
+ * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "tmux.h"
+
+#include <stdlib.h>
+
+/*
+ * Show or clear prompt history.
+ */
+
+static enum cmd_retval	cmd_show_prompt_history_exec(struct cmd *,
+			    struct cmdq_item *);
+
+const struct cmd_entry cmd_show_prompt_history_entry = {
+	.name = "show-prompt-history",
+	.alias = "showphist",
+
+	.args = { "T:", 0, 0, NULL },
+	.usage = "[-T type]",
+
+	.flags = CMD_AFTERHOOK,
+	.exec = cmd_show_prompt_history_exec
+};
+
+const struct cmd_entry cmd_clear_prompt_history_entry = {
+	.name = "clear-prompt-history",
+	.alias = "clearphist",
+
+	.args = { "T:", 0, 0, NULL },
+	.usage = "[-T type]",
+
+	.flags = CMD_AFTERHOOK,
+	.exec = cmd_show_prompt_history_exec
+};
+
+static enum cmd_retval
+cmd_show_prompt_history_exec(struct cmd *self, struct cmdq_item *item)
+{
+	struct args		*args = cmd_get_args(self);
+	const char		*typestr = args_get(args, 'T');
+	enum prompt_type	 type;
+	u_int			 tidx, hidx;
+
+	if (cmd_get_entry(self) == &cmd_clear_prompt_history_entry) {
+		if (typestr == NULL) {
+			for (tidx = 0; tidx < PROMPT_NTYPES; tidx++) {
+				free(status_prompt_hlist[tidx]);
+				status_prompt_hlist[tidx] = NULL;
+				status_prompt_hsize[tidx] = 0;
+			}
+		} else {
+			type = status_prompt_type(typestr);
+			if (type == PROMPT_TYPE_INVALID) {
+				cmdq_error(item, "invalid type: %s", typestr);
+				return (CMD_RETURN_ERROR);
+			}
+			free(status_prompt_hlist[type]);
+			status_prompt_hlist[type] = NULL;
+			status_prompt_hsize[type] = 0;
+		}
+
+		return (CMD_RETURN_NORMAL);
+	}
+
+	if (typestr == NULL) {
+		for (tidx = 0; tidx < PROMPT_NTYPES; tidx++) {
+			cmdq_print(item, "History for %s:\n",
+			    status_prompt_type_string(tidx));
+			for (hidx = 0; hidx < status_prompt_hsize[tidx];
+			    hidx++) {
+				cmdq_print(item, "%d: %s", hidx + 1,
+				    status_prompt_hlist[tidx][hidx]);
+			}
+			cmdq_print(item, "%s", "");
+		}
+	} else {
+		type = status_prompt_type(typestr);
+		if (type == PROMPT_TYPE_INVALID) {
+			cmdq_error(item, "invalid type: %s", typestr);
+			return (CMD_RETURN_ERROR);
+		}
+		cmdq_print(item, "History for %s:\n",
+		    status_prompt_type_string(type));
+		for (hidx = 0; hidx < status_prompt_hsize[type]; hidx++) {
+			cmdq_print(item, "%d: %s", hidx + 1,
+			    status_prompt_hlist[type][hidx]);
+		}
+		cmdq_print(item, "%s", "");
+	}
+
+	return (CMD_RETURN_NORMAL);
+}