From e13e3e027bd44371bb02854be50d22a38e6d2720 Mon Sep 17 00:00:00 2001
From: Matthias Kruk <m@m10k.eu>
Date: Sat, 3 Apr 2021 11:26:28 +0900
Subject: [PATCH] include/clip: Add functions for clipboard manipulation

This commit adds some convenience functions for reading from, writing to,
and swapping X clipboards.
---
 include/clip.sh | 67 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100644 include/clip.sh

diff --git a/include/clip.sh b/include/clip.sh
new file mode 100644
index 0000000..1af36f5
--- /dev/null
+++ b/include/clip.sh
@@ -0,0 +1,67 @@
+#!/bin/bash
+
+__init() {
+	return 0
+}
+
+clip_get() {
+	local sel
+
+	sel="$1"
+
+	if ! xclip -selection "$sel" -o 2>/dev/null; then
+		return 1
+	fi
+
+	return 0
+}
+
+clip_get_any() {
+	if clip_get "primary"; then
+		return 0
+	fi
+
+	if clip_get "clipboard"; then
+		return 0
+	fi
+
+	if clip_get "secondary"; then
+		return 0
+	fi
+
+	return 1
+}
+
+clip_set() {
+	local sel
+	local data
+
+	sel="$1"
+	data="$2"
+
+	if (( $# < 2 )); then
+		data=$(</dev/stdin)
+	fi
+
+	if ! printf "$data" | xclip -selection "$sel" 2>/dev/null; then
+		return 1
+	fi
+
+	return 0
+}
+
+clip_swap() {
+	local left
+	local right
+
+	local left_data
+
+	left="$1"
+	right="$2"
+
+        left_data=$(clip_get "$left")
+	clip_get "$right" | clip_set "$left"
+	clip_set "$right" <<< "$left_data"
+
+	return 0
+}
-- 
2.47.3