🦈🏠🐜❗ Initial Commit ❗🐜🦈🏠

bin/yank.sh

@@ -0,0 +1,67 @@
+#!/usr/bin/env bash
+
+set -eu
+
+cmd_exists() {
+  type "$1" &>/dev/null || return 1
+}
+
+# get data either form stdin or from file
+buf=$(cat "$@")
+
+copy_backend_remote_tunnel_port=$(tmux show-option -gvq "@copy_backend_remote_tunnel_port")
+copy_use_osc52_fallback=$(tmux show-option -gvq "@copy_use_osc52_fallback")
+
+# Resolve copy backend: pbcopy (OSX), reattach-to-user-namespace (OSX), xclip/xsel (Linux)
+copy_backend=""
+if cmd_exists pbcopy; then
+  copy_backend="pbcopy"
+elif cmd_exists reattach-to-user-namespace; then
+  copy_backend="reattach-to-user-namespace pbcopy"
+elif [ -n "${DISPLAY-}" ] && cmd_exists xsel; then
+  copy_backend="xsel -i --clipboard"
+elif [ -n "${DISPLAY-}" ] && cmd_exists xclip; then
+  copy_backend="xclip -i -f -selection primary | xclip -i -selection clipboard"
+elif [ -n "${copy_backend_remote_tunnel_port-}" ] &&
+  (netstat -f inet -nl 2>/dev/null || netstat -4 -nl 2>/dev/null) |
+  grep -q "[.:]$copy_backend_remote_tunnel_port"; then
+  copy_backend="nc localhost $copy_backend_remote_tunnel_port"
+fi
+
+# if copy backend is resolved, copy and exit
+if [ -n "$copy_backend" ]; then
+  printf "%s" "$buf" | eval "$copy_backend"
+  exit
+fi
+
+# If no copy backends were eligible, decide to fallback to OSC 52 escape sequences
+# Note, most terminals do not handle OSC
+if [ "$copy_use_osc52_fallback" == "off" ]; then
+  exit
+fi
+
+# Copy via OSC 52 ANSI escape sequence to controlling terminal
+buflen=$(printf %s "$buf" | wc -c)
+
+# https://sunaku.github.io/tmux-yank-osc52.html
+# The maximum length of an OSC 52 escape sequence is 100_000 bytes, of which
+# 7 bytes are occupied by a "\033]52;c;" header, 1 byte by a "\a" footer, and
+# 99_992 bytes by the base64-encoded result of 74_994 bytes of copyable text
+maxlen=74994
+
+# warn if exceeds maxlen
+if [ "$buflen" -gt "$maxlen" ]; then
+  printf "input is %d bytes too long" "$((buflen - maxlen))" >&2
+fi
+
+# build up OSC 52 ANSI escape sequence
+esc="\033]52;c;$(printf %s "$buf" | head -c $maxlen | base64 | tr -d '\r\n')\a"
+esc="\033Ptmux;\033$esc\033\\"
+
+# resolve target terminal to send escape sequence
+# if we are on remote machine, send directly to SSH_TTY to transport escape sequence
+# to terminal on local machine, so data lands in clipboard on our local machine
+pane_active_tty=$(tmux list-panes -F "#{pane_active} #{pane_tty}" | awk '$1=="1" { print $2 }')
+target_tty="${SSH_TTY:-$pane_active_tty}"
+
+printf '%s' "$esc" >"$target_tty"