From 76f8611ee3345268e2091a9d2e81b53a8b05889c Mon Sep 17 00:00:00 2001
From: Yves Fischer <yvesf+git@xapek.org>
Date: Wed, 13 Oct 2021 23:22:16 +0200
Subject: ebus parser in rust

---
 ebus-rust/src/model/mod.rs | 126 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 126 insertions(+)
 create mode 100644 ebus-rust/src/model/mod.rs

(limited to 'ebus-rust/src/model/mod.rs')

diff --git a/ebus-rust/src/model/mod.rs b/ebus-rust/src/model/mod.rs
new file mode 100644
index 0000000..fd738fa
--- /dev/null
+++ b/ebus-rust/src/model/mod.rs
@@ -0,0 +1,126 @@
+use serde::Deserialize;
+
+use quick_xml::de::{from_reader};
+
+pub fn read_config(xml: &[u8]) -> Result<Ebus, String> {
+    let ebus_configuration = from_reader(xml).map_err(|e| format!("failed to read xml: {}", e))?;
+    Ok(ebus_configuration)
+}
+
+#[derive(Debug, Deserialize, PartialEq)]
+pub struct Description {
+    pub lang: String,
+    #[serde(rename = "$value")]
+    pub text: String,
+}
+
+#[derive(Debug, Deserialize, PartialEq)]
+#[serde(rename_all = "lowercase")]
+pub enum DeviceType {
+    Master,
+    Slave,
+    Broadcast,
+}
+
+#[derive(Debug, Deserialize, PartialEq)]
+pub struct Device {
+    pub address: u8,
+    #[serde(rename = "type", default)]
+    pub device_type: Option<DeviceType>,
+    pub name: String,
+    #[serde(rename = "description", default)]
+    pub descriptions: Vec<Description>,
+}
+
+#[derive(Debug, Deserialize, PartialEq)]
+pub struct Devices {
+    #[serde(rename = "device", default)]
+    pub devices: Vec<Device>,
+}
+
+#[derive(Debug, Deserialize, PartialEq, Clone)]
+pub struct ByteEnumOption {
+    pub value: u8,
+    pub name: String,
+}
+
+#[derive(Debug, Deserialize, PartialEq, Clone)]
+pub struct ByteEnumList(pub Vec<ByteEnumOption>);
+
+impl ByteEnumList {
+    pub fn get(&self, value: u8) -> Option<String> {
+        self.0
+            .iter()
+            .find(|v| v.value == value)
+            .map(|v| v.name.clone())
+    }
+}
+
+#[derive(Debug, Deserialize, PartialEq, Clone)]
+pub enum PacketField {
+    #[serde(rename = "byte")]
+    Byte { offset: u8, name: String },
+    #[serde(rename = "data1b")]
+    Data1b { offset: u8, name: String },
+    #[serde(rename = "data1c")]
+    Data1c { offset: u8, name: String },
+    #[serde(rename = "data2b")]
+    Data2b { offset: u8, name: String },
+    #[serde(rename = "data2c")]
+    Data2c { offset: u8, name: String },
+    #[serde(rename = "byteEnum")]
+    ByteEnum {
+        offset: u8,
+        name: String,
+        #[serde(rename = "option")]
+        options: ByteEnumList,
+    },
+    #[serde(rename = "bcd")]
+    Bcd { offset: u8, name: String },
+    #[serde(rename = "bit")]
+    Bit { offset: u8, name: String },
+    #[serde(rename = "word")]
+    Word { offset: u8, name: String },
+    #[serde(rename = "string")]
+    String {
+        offset: u8,
+        name: String,
+        length: u8,
+    },
+}
+
+#[derive(Debug, Deserialize, PartialEq)]
+pub struct PacketFields {
+    #[serde(rename = "$value")]
+    pub fields: Option<Vec<PacketField>>,
+}
+
+#[derive(Debug, Deserialize, PartialEq)]
+pub struct Packet {
+    pub primary: u8,
+    pub secondary: u8,
+    pub name: String,
+    #[serde(rename = "description", default)]
+    pub descriptions: Vec<Description>,
+    pub fields: PacketFields,
+}
+
+#[derive(Debug, Deserialize, PartialEq)]
+pub struct Packets {
+    #[serde(rename = "packet", default)]
+    pub packets: Vec<Packet>,
+}
+
+impl Packets {
+    pub fn get(&self, primary: u8, secondary: u8) -> Option<&Packet> {
+        self.packets
+            .iter()
+            .find(|p| p.primary == primary && p.secondary == secondary)
+    }
+}
+
+#[derive(Debug, Deserialize, PartialEq)]
+pub struct Ebus {
+    pub devices: Devices,
+    pub packets: Packets,
+}
-- 
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