From d8cffb8ae7c949a85b35a15f344fec592d7df060 Mon Sep 17 00:00:00 2001
From: Curtis McEnroe <june@causal.agency>
Date: Wed, 27 Feb 2019 00:17:59 -0500
Subject: [PATCH] Add /move command

---
 catgirl.1 | 10 ++++++++++
 chat.h    |  1 +
 input.c   | 10 ++++++++++
 ui.c      | 39 +++++++++++++++++++++++++++++++--------
 4 files changed, 52 insertions(+), 8 deletions(-)

diff --git a/catgirl.1 b/catgirl.1
index cb2826a..c7dd091 100644
--- a/catgirl.1
+++ b/catgirl.1
@@ -162,6 +162,16 @@ Close the current window.
 .It Ic /help , /man
 View this manual.
 .
+.It Ic /move Ar num
+Move window to number.
+If
+.Ar num
+starts with
+.Cm +
+or
+.Cm - ,
+the number is relative to the current window.
+.
 .It Ic /open Op Ar range
 Open a
 .Ar range
diff --git a/chat.h b/chat.h
index 6f08a01..a3ce3f9 100644
--- a/chat.h
+++ b/chat.h
@@ -126,6 +126,7 @@ void uiExit(int status);
 void uiPrompt(bool nickChanged);
 void uiShowTag(struct Tag tag);
 void uiShowNum(int num, bool relative);
+void uiMoveTag(struct Tag tag, int num, bool relative);
 void uiCloseTag(struct Tag tag);
 
 enum UIHeat {
diff --git a/input.c b/input.c
index 45de9f1..bbbc0d3 100644
--- a/input.c
+++ b/input.c
@@ -117,6 +117,15 @@ static void inputMan(struct Tag tag, char *params) {
 	eventWait((const char *[]) { "man", "1", "catgirl", NULL });
 }
 
+static void inputMove(struct Tag tag, char *params) {
+	char *num = strsep(&params, " ");
+	if (num) {
+		uiMoveTag(tag, strtol(num, NULL, 0), num[0] == '+' || num[0] == '-');
+	} else {
+		uiLog(tag, UIHot, L"/move requires a number");
+	}
+}
+
 static void inputOpen(struct Tag tag, char *params) {
 	if (params && !isdigit(params[0])) {
 		urlOpenMatch(tag, params);
@@ -174,6 +183,7 @@ static const struct {
 	{ "/join", inputJoin },
 	{ "/man", inputMan },
 	{ "/me", inputMe },
+	{ "/move", inputMove },
 	{ "/names", inputWho },
 	{ "/nick", inputNick },
 	{ "/open", inputOpen },
diff --git a/ui.c b/ui.c
index 643d627..1273028 100644
--- a/ui.c
+++ b/ui.c
@@ -76,6 +76,15 @@ static void windowAppend(struct Window *win) {
 	windows.tag[win->tag.id] = win;
 }
 
+static void windowInsert(struct Window *win, struct Window *next) {
+	win->prev = next->prev;
+	win->next = next;
+	if (win->prev) win->prev->next = win;
+	win->next->prev = win;
+	if (!win->prev) windows.head = win;
+	windows.tag[win->tag.id] = win;
+}
+
 static void windowRemove(struct Window *win) {
 	windows.tag[win->tag.id] = NULL;
 	if (win->prev) win->prev->next = win->next;
@@ -365,6 +374,17 @@ void uiShowTag(struct Tag tag) {
 	uiShowWindow(windowFor(tag));
 }
 
+static void uiShowAuto(void) {
+	struct Window *unread = NULL;
+	struct Window *hot;
+	for (hot = windows.head; hot; hot = hot->next) {
+		if (hot->hot) break;
+		if (!unread && hot->unread) unread = hot;
+	}
+	if (!hot && !unread) return;
+	uiShowWindow(hot ? hot : unread);
+}
+
 void uiShowNum(int num, bool relative) {
 	struct Window *win = (relative ? windows.active : windows.head);
 	if (num < 0) {
@@ -375,15 +395,18 @@ void uiShowNum(int num, bool relative) {
 	if (win) uiShowWindow(win);
 }
 
-static void uiShowAuto(void) {
-	struct Window *unread = NULL;
-	struct Window *hot;
-	for (hot = windows.head; hot; hot = hot->next) {
-		if (hot->hot) break;
-		if (!unread && hot->unread) unread = hot;
+void uiMoveTag(struct Tag tag, int num, bool relative) {
+	struct Window *win = windowFor(tag);
+	windowRemove(win);
+	struct Window *ins = (relative ? win : windows.head);
+	if (num < 0) {
+		for (; ins; ins = ins->prev) if (!num++) break;
+	} else {
+		if (relative) ins = ins->next;
+		for (; ins; ins = ins->next) if (!num--) break;
 	}
-	if (!hot && !unread) return;
-	uiShowWindow(hot ? hot : unread);
+	ins ? windowInsert(win, ins) : windowAppend(win);
+	uiStatus();
 }
 
 void uiCloseTag(struct Tag tag) {