Add script to show reported session title.

Author: gnachman

tests/it2title.sh

@@ -0,0 +1,78 @@
+#!/bin/bash
+
+function ctrl_c() {
+  stty "$saved_stty"
+  exit 1
+}
+
+# Read some bytes from stdin. Pass the number of bytes to read as the first argument.
+function read_bytes() {
+  numbytes=$1
+  dd bs=1 count=$numbytes 2>/dev/null
+}
+
+function init() {
+  # Make sure stdin and stdout are a tty.
+  if [ ! -t 0 ] ; then
+    exit 1
+  fi
+  if [ ! -t 1 ] ; then
+    exit 1
+  fi
+
+  # Save the tty's state.
+  saved_stty=$(stty -g)
+
+  # Trap ^C to fix the tty.
+  trap ctrl_c INT
+
+  # Enter raw mode and turn off echo so the terminal and I can chat quietly.
+  stty -echo -icanon raw
+}
+
+# Request the profile name
+function send_title_request() {
+  printf '\e[20t'
+}
+
+function read_osc() {
+  boilerplate=$(read_bytes 2)
+  result=''
+  b=""
+  tab=$(printf "\e")
+  while :
+  do
+    last="$b"
+    b=$(read_bytes 1)
+    if [[ $last == $tab && $b == "\\" ]]
+    then
+      break
+    elif [[ $last == $tab ]]
+    then
+      result="$result$last$b"
+    elif [[ $b != $tab ]]
+    then
+      result="$result$b"
+    fi
+  done
+  echo -n "$result"
+}
+
+function read_title_report() {
+  body=$(read_osc)
+  echo -n ${body:1}
+}
+
+init
+
+# Request a report with the profile name
+send_title_request
+
+# Read teh response
+value=$(read_title_report)
+
+# Restore the terminal to cooked mode.
+stty "$saved_stty"
+
+# Print the profile name
+echo "$value"