diff --git a/Cargo.lock b/Cargo.lock
index ebdd46c..380c73c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,5 +1,13 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+[[package]]
+name = "aho-corasick"
+version = "0.7.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "memchr 2.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "ansi_term"
 version = "0.11.0"
@@ -42,16 +50,47 @@ name = "glob"
 version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "itoa"
+version = "0.4.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "lazy_static"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "libc"
 version = "0.2.55"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "memchr"
+version = "2.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "numtoa"
 version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "proc-macro2"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "quote"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "redox_syscall"
 version = "0.1.54"
@@ -65,12 +104,64 @@ dependencies = [
  "redox_syscall 0.1.54 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "regex"
+version = "1.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "aho-corasick 0.7.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "memchr 2.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex-syntax 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
+ "thread_local 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "regex-syntax"
+version = "0.6.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "rot8"
 version = "0.1.1"
 dependencies = [
  "clap 2.33.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "glob 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "ryu"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "serde"
+version = "1.0.99"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "serde_derive 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "serde_derive"
+version = "1.0.99"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "serde_json"
+version = "1.0.40"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "itoa 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ryu 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -78,6 +169,16 @@ name = "strsim"
 version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "syn"
+version = "1.0.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "termion"
 version = "1.5.2"
@@ -97,11 +198,24 @@ dependencies = [
  "unicode-width 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "thread_local"
+version = "0.3.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "unicode-width"
 version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "unicode-xid"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "vec_map"
 version = "0.8.1"
@@ -127,19 +241,34 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [metadata]
+"checksum aho-corasick 0.7.6 (registry+https://github.com/rust-lang/crates.io-index)" = "58fb5e95d83b38284460a5fda7d6470aa0b8844d283a0b614b8535e880800d2d"
 "checksum ansi_term 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ee49baf6cb617b853aa8d93bf420db2383fab46d314482ca2803b40d5fde979b"
 "checksum atty 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "9a7d5b8723950951411ee34d271d99dddcc2035a16ab25310ea2c8cfd4369652"
 "checksum bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "228047a76f468627ca71776ecdebd732a3423081fcf5125585bcd7c49886ce12"
 "checksum clap 2.33.0 (registry+https://github.com/rust-lang/crates.io-index)" = "5067f5bb2d80ef5d68b4c87db81601f0b75bca627bc2ef76b141d7b846a3c6d9"
 "checksum glob 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "9b919933a397b79c37e33b77bb2aa3dc8eb6e165ad809e58ff75bc7db2e34574"
+"checksum itoa 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)" = "501266b7edd0174f8530248f87f99c88fbe60ca4ef3dd486835b8d8d53136f7f"
+"checksum lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 "checksum libc 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)" = "42914d39aad277d9e176efbdad68acb1d5443ab65afe0e0e4f0d49352a950880"
+"checksum memchr 2.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "88579771288728879b57485cc7d6b07d648c9f0141eb955f8ab7f9d45394468e"
 "checksum numtoa 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b8f8bdf33df195859076e54ab11ee78a1b208382d3a26ec40d142ffc1ecc49ef"
+"checksum proc-macro2 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "175a40b9cf564ce9bf050654633dbf339978706b8ead1a907bb970b63185dd95"
+"checksum quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "053a8c8bcc71fcce321828dc897a98ab9760bef03a4fc36693c231e5b3216cfe"
 "checksum redox_syscall 0.1.54 (registry+https://github.com/rust-lang/crates.io-index)" = "12229c14a0f65c4f1cb046a3b52047cdd9da1f4b30f8a39c5063c8bae515e252"
 "checksum redox_termios 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7e891cfe48e9100a70a3b6eb652fef28920c117d366339687bd5576160db0f76"
+"checksum regex 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "dc220bd33bdce8f093101afe22a037b8eb0e5af33592e6a9caafff0d4cb81cbd"
+"checksum regex-syntax 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)" = "11a7e20d1cce64ef2fed88b66d347f88bd9babb82845b2b858f3edbf59a4f716"
+"checksum ryu 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c92464b447c0ee8c4fb3824ecc8383b81717b9f1e74ba2e72540aef7b9f82997"
+"checksum serde 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)" = "fec2851eb56d010dc9a21b89ca53ee75e6528bab60c11e89d38390904982da9f"
+"checksum serde_derive 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)" = "cb4dc18c61206b08dc98216c98faa0232f4337e1e1b8574551d5bad29ea1b425"
+"checksum serde_json 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)" = "051c49229f282f7c6f3813f8286cc1e3323e8051823fce42c7ea80fe13521704"
 "checksum strsim 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
+"checksum syn 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)" = "66850e97125af79138385e9b88339cbcd037e3f28ceab8c5ad98e64f0f1f80bf"
 "checksum termion 1.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "dde0593aeb8d47accea5392b39350015b5eccb12c0d98044d856983d89548dea"
 "checksum textwrap 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d326610f408c7a4eb6f51c37c330e496b08506c9457c9d34287ecc38809fb060"
+"checksum thread_local 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "c6b53e329000edc2b34dbe8545fd20e55a333362d0a321909685a19bd28c3f1b"
 "checksum unicode-width 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "882386231c45df4700b275c7ff55b6f3698780a650026380e72dabe76fa46526"
+"checksum unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "826e7639553986605ec5979c7dd957c7895e93eabed50ab2ffa7f6128a75097c"
 "checksum vec_map 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "05c78687fb1a80548ae3250346c3db86a80a7cdd77bda190189f2d0a0987c81a"
 "checksum winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)" = "f10e386af2b13e47c89e7236a7a14a086791a2b88ebad6df9bf42040195cf770"
 "checksum winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
diff --git a/Cargo.toml b/Cargo.toml
index ccad21c..ac8a890 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,5 +11,8 @@ keywords = ["sway", "x11", "display", "rotation"]
 edition = "2018"
 
 [dependencies]
-glob = "0.3"
 clap = "2.33"
+glob = "0.3"
+regex = "1"
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
diff --git a/src/main.rs b/src/main.rs
index ad2a09e..3f4c0ee 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,37 +1,107 @@
 extern crate clap;
 extern crate glob;
+extern crate regex;
+
 use clap::{App, Arg};
 use glob::glob;
+use serde::Deserialize;
 use std::fs;
 use std::process::Command;
 use std::thread;
 use std::time::Duration;
 
-enum BackendMode {
+enum Backend {
     Sway,
     Xorg,
 }
 
+#[derive(Deserialize)]
+struct SwayOutput {
+    name: String,
+    transform: String,
+}
+
+fn get_window_server_rotation_state(display: &str, backend: &Backend) -> Result<String, String> {
+    match backend {
+        Backend::Sway => {
+            let raw_rotation_state = String::from_utf8(
+                Command::new("swaymsg")
+                    .arg("-t")
+                    .arg("get_outputs")
+                    .arg("--raw")
+                    .output()
+                    .expect("Swaymsg get outputs command failed to start")
+                    .stdout,
+            )
+            .unwrap();
+            let deserialized: Vec<SwayOutput> = serde_json::from_str(&raw_rotation_state)
+                .expect("Unable to deserialize swaymsg JSON output");
+            for output in deserialized {
+                if output.name == display {
+                    return Ok(output.transform);
+                }
+            }
+
+            return Err(format!(
+                "Unable to determine rotation state: display {} not found in 'swaymsg -t get_outputs'",
+                display
+            )
+            .to_owned());
+        }
+        Backend::Xorg => {
+            let raw_rotation_state = String::from_utf8(
+                Command::new("xrandr")
+                    .output()
+                    .expect("Xrandr get outputs command failed to start")
+                    .stdout,
+            )
+            .unwrap();
+            let xrandr_output_pattern = regex::Regex::new(format!(
+                    r"^{} connected .+? .+? (normal |inverted |left |right )?\(normal left inverted right x axis y axis\) .+$",
+                    regex::escape(display),
+            ).as_str()).unwrap();
+            for xrandr_output_line in raw_rotation_state.split("\n") {
+                if !xrandr_output_pattern.is_match(xrandr_output_line) {
+                    continue;
+                }
+
+                let xrandr_output_captures =
+                    xrandr_output_pattern.captures(xrandr_output_line).unwrap();
+                if let Some(transform) = xrandr_output_captures.get(1) {
+                    return Ok(transform.as_str().to_owned());
+                } else {
+                    return Ok("normal".to_owned());
+                }
+            }
+
+            return Err(format!(
+                "Unable to determine rotation state: display {} not found in xrandr output",
+                display
+            )
+            .to_owned());
+        }
+    }
+}
+
 fn main() -> Result<(), String> {
-    let mut old_state = "normal";
     let mut new_state: &str;
     let mut path_x: String = "".to_string();
     let mut path_y: String = "".to_string();
     let mut matrix: [&str; 9];
     let mut x_state: &str;
 
-    let mode = if String::from_utf8(Command::new("pidof").arg("sway").output().unwrap().stdout)
+    let backend = if String::from_utf8(Command::new("pidof").arg("sway").output().unwrap().stdout)
         .unwrap()
         .len()
         >= 1
     {
-        BackendMode::Sway
+        Backend::Sway
     } else if String::from_utf8(Command::new("pidof").arg("Xorg").output().unwrap().stdout)
         .unwrap()
         .len()
         >= 1
     {
-        BackendMode::Xorg
+        Backend::Xorg
     } else {
         return Err("Unable to find Sway or Xorg procceses".to_owned());
     };
@@ -66,6 +136,8 @@ fn main() -> Result<(), String> {
     let sleep = matches.value_of("sleep").unwrap_or("default.conf");
     let display = matches.value_of("display").unwrap_or("default.conf");
     let touchscreen = matches.value_of("touchscreen").unwrap_or("default.conf");
+    let old_state_owned = get_window_server_rotation_state(display, &backend)?;
+    let mut old_state = old_state_owned.as_str();
 
     for entry in glob("/sys/bus/iio/devices/iio:device*/in_accel_*_raw").unwrap() {
         match entry {
@@ -77,8 +149,7 @@ fn main() -> Result<(), String> {
                 } else if path.to_str().unwrap().contains("z_raw") {
                     continue;
                 } else {
-                    println!("{:?}", path);
-                    panic!();
+                    panic!("Unknown accelerometer device path {:?}", path);
                 }
             }
             Err(e) => println!("{:?}", e),
@@ -124,22 +195,22 @@ fn main() -> Result<(), String> {
         }
 
         if new_state != old_state {
-            match mode {
-                BackendMode::Sway => {
+            match backend {
+                Backend::Sway => {
                     Command::new("swaymsg")
                         .arg("output")
                         .arg(display)
                         .arg("transform")
                         .arg(new_state)
                         .spawn()
-                        .expect("rotate command failed to start");
+                        .expect("Swaymsg rotate command failed to start");
                 }
-                BackendMode::Xorg => {
+                Backend::Xorg => {
                     Command::new("xrandr")
                         .arg("-o")
                         .arg(x_state)
                         .spawn()
-                        .expect("rotate command failed to start");
+                        .expect("Xrandr rotate command failed to start");
 
                     Command::new("xinput")
                         .arg("set-prop")
@@ -149,7 +220,7 @@ fn main() -> Result<(), String> {
                         .arg("Matrix")
                         .args(&matrix)
                         .spawn()
-                        .expect("rotate command failed to start");
+                        .expect("Xinput rotate command failed to start");
                 }
             }
             old_state = new_state;