install script for tridactyl native

.local/bin/trinativeinstall

@@ -0,0 +1,60 @@
+#!/bin/sh
+
+echoerr() {
+    red="\\033[31m"
+    normal="\\e[0m"
+    printf "%b\n" "$red$*$normal" >&2
+}
+
+sedEscape() {
+    printf "%s" "$@" | sed 's/[&/\]/\\&/g'
+}
+
+run() {
+    set -e
+
+    XDG_DATA_HOME="${XDG_DATA_HOME:-$HOME/.local/share}"
+    manifest_home="$HOME/.librewolf/native-messaging-hosts/"
+    binary_suffix="Linux"
+    native_version="$(curl -sSL https://api.github.com/repos/tridactyl/native_messenger/releases/latest | grep "tag_name" | cut -d':' -f2- | sed 's|[^0-9\.]||g')"
+
+    manifest_loc="https://raw.githubusercontent.com/tridactyl/native_messenger/$native_version/tridactyl.json"
+    native_loc="https://github.com/tridactyl/native_messenger/releases/download/$native_version/native_main-$binary_suffix"
+    manifest_file="$manifest_home/tridactyl.json"
+    native_file="$XDG_DATA_HOME/tridactyl/native_main"
+
+    echo "Installing manifest here: $manifest_home"
+    echo "Installing script here: XDG_DATA_HOME: $XDG_DATA_HOME/tridactyl"
+
+    mkdir -p "$manifest_home" "$XDG_DATA_HOME"
+    curl -sSL --create-dirs -o "$manifest_file" "$manifest_loc"
+    curl -sSL --create-dirs -o "$native_file" "$native_loc"
+
+    if [ ! -f "$manifest_file" ] ; then
+        echoerr "Failed to create '$manifest_file'. Please make sure that the directories exist and that you have the necessary permissions."
+        exit 1
+    fi
+
+    if [ ! -f "$native_file" ] ; then
+        echoerr "Failed to create '$native_file'. Please make sure that the directories exist and that you have the necessary permissions."
+        exit 1
+    fi
+
+    sed -i.bak "s/REPLACE_ME_WITH_SED/$(sedEscape "$native_file")/" "$manifest_file"
+    chmod +x "$native_file"
+
+    echo
+    echo "Successfully installed Tridactyl native messenger!"
+    echo "Run ':native' in Firefox to check."
+}
+
+# Run the run function in a subshell so that it can be exited early if an error
+# occurs
+if ret="$(run "$@")"; then
+    # Print captured output
+    printf "%b\n" "$ret"
+else
+    # Print captured output, ${ret:+\n} adds a newline only if ret isn't empty
+    printf "%b" "$ret${ret:+\n}"
+    echoerr 'Failed to install!'
+fi