282 lines
8.4 KiB
Rust
282 lines
8.4 KiB
Rust
#[macro_use]
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#[path = "messages.rs"] pub mod messages;
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#[path = "key_operations.rs"] pub mod key_operations;
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extern crate hidapi;
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use std::process;
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use colored::*;
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#[derive(Copy, Clone)]
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enum Type {
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Unconfigured = 0,
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Key = 1,
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Mouse = 2,
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MouseKey = 3,
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String = 4
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}
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impl Type {
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fn value(value:u8) -> Option<Type> {
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match value {
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0 => Some(Type::Unconfigured),
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1 => Some(Type::Key),
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2 => Some(Type::Mouse),
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3 => Some(Type::MouseKey),
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4 => Some(Type::String),
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_ => None
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}
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}
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}
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pub struct PedalsData {
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header: [u8; 8],
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data: [u8; 48],
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length: u8,
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}
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pub struct Pedals {
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start: [u8; 8],
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ped_data: Vec<PedalsData>,
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}
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impl Pedals {
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pub fn new() -> Pedals {
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// Prepare variables
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let start = [0x01u8, 0x80, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00];
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let header_0 = [0x01u8, 0x81, 0x08, 0x01, 0x00, 0x00, 0x00, 0x00];
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let header_1 = [0x01u8, 0x81, 0x08, 0x02, 0x00, 0x00, 0x00, 0x00];
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let header_2 = [0x01u8, 0x81, 0x08, 0x03, 0x00, 0x00, 0x00, 0x00];
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let mut default_data = [0u8; 48];
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default_data[0] = 0x08;
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// Initialize actual object
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Pedals {
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start: start,
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ped_data: vec![
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PedalsData {
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header: header_0,
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data: default_data,
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length: 8,
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},
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PedalsData {
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header: header_1,
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data: default_data,
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length: 8,
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},
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PedalsData {
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header: header_2,
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data: default_data,
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length: 8, },
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]
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}
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}
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pub fn read_pedal(&self, dev: & hidapi::HidDevice, ped:& u8) -> [u8; 8] {
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let mut buf = [0u8; 8];
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let mut query = [0x01u8, 0x82, 0x08, 0x01, 0x00, 0x00, 0x00, 0x00];
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query[3] += ped;
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// Write query to device
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dev.write(&query).unwrap();
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// Read answer
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dev.read(&mut buf[..]).unwrap();
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buf
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}
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/// Read the current values of the pedals
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pub fn read_pedals(&self, dev: & hidapi::HidDevice, peds: Vec<u8>) {
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// This is kind of hacky, but for number of pedals == 2, the table shifts.
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let total_width = 55 as usize;
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// Check if passed pedal number is valid
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for i in peds.iter() {
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if *i > 2 {
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error!("Pedal value {} is larger than 2 and thus not valid!", i);
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}
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}
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// Print header
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println!("├{}┐", "─".repeat(total_width));
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println!("│{name:^width$}│", name = "Programmed Keys", width = total_width);
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println!("╞{}╡", "═".repeat(total_width));
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// Read and print keys
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for (i, ped) in peds.iter().enumerate() {
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// Read value from pedal and directly translate it to a key
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let mut key_value = self.read_pedal(dev, ped);
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let key_name_option = match Type::value(key_value[1]) {
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Some(Type::Unconfigured) => None,
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Some(Type::Key) => key_operations::print_key(&key_value),
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Some(Type::Mouse) => key_operations::print_key(&key_value),
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Some(Type::MouseKey) => key_operations::print_key(&key_value),
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Some(Type::String) => self.print_string(dev, & mut key_value),
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None => error!("The key type which was returned by the pedal was invalid!")
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};
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let key_name = match key_name_option {
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Some(key) => key,
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None => "< None >".to_string(),
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};
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println!("│ Pedal {ped} │ {name:<-width$}│", ped = i, name = key_name, width = total_width - 14);
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// Print spacer between lines
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if i != peds.len() - 1 {
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println!("│ {}┼{name:<-width$}│", "─".repeat(10), name = "─".repeat(total_width - 14), width = total_width - 12);
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}
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}
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// Print simple footer
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println!("├{}┘", "─".repeat(total_width));
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}
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/// Sets the type of the function. False (0) if everything went fine, True (1) if
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/// an error occurred.
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fn set_type(& mut self, ped:usize, typ:Type) {
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let set_value = if self.ped_data[ped].data[1] == 0 { true } else { false };
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if set_value {
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self.ped_data[ped].data[1] = typ as u8;
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}
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let ret = match typ {
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Type::String => {
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// If nothing is set, set type to string and length to 2
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if set_value {
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self.ped_data[ped].length = 2;
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}
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// Check if pedal type is set to String, otherwise error
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self.ped_data[ped].data[1] != Type::String as u8
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}
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_ => {
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let ret;
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if self.ped_data[ped].data[1] == Type::String as u8 {
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// if type is Key or Mouse, and String is already set, return false
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ret = true;
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}
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else {
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// else, set type to new type and return true
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self.ped_data[ped].data[1] |= typ as u8;
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ret = false;
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}
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ret
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}
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};
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if ret {
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error!("Invalid combination of options!");
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}
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}
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fn write_pedal(&self, dev: & hidapi::HidDevice, ped:usize) {
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// First, write header
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dev.write(&self.ped_data[ped].header).unwrap();
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// Write data to device in 8 byte chunks
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let mut up:usize = 0;
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for i in 0..(self.ped_data[ped].length / 8) {
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// Set bounds
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let low = (i * 8) as usize;
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up = 8 * (i + 1) as usize;
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// Write to device
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dev.write(&self.ped_data[ped].data[low..up]).unwrap();
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}
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// Write remaining values to device
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if self.ped_data[ped].length % 8 > 0 {
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dev.write(&self.ped_data[ped].data[up..(self.ped_data[ped].length as usize)]).unwrap();
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}
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}
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/// This method writes all data from Pedals.peddata to the device
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pub fn write_pedals(&self, dev: & hidapi::HidDevice) {
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dev.write(&self.start).unwrap();
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for (i, _pedal) in self.ped_data.iter().enumerate() {
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self.write_pedal(dev, i)
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}
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}
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pub fn set_key(& mut self, ped:usize, key:&str) {
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if let Some(encoded_key) = key_operations::encode_byte(key) {
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self.set_type(ped, Type::Key);
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self.ped_data[ped].data[3] = encoded_key;
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}
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else {
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error!("Key '{}' is not recognized! Please provide a valid key, listed in './footswitch-rs --listkeys 4'", key);
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}
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}
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pub fn print_string(&self, dev: & hidapi::HidDevice, response: & mut [u8]) -> Option<String> {
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let mut string = String::new();
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let mut len = response[0] - 2;
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let mut ind = 2;
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while len > 0 {
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if ind == 8 {
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dev.read(&mut response[..]).unwrap();
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ind = 0;
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}
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if let Some(key_str) = key_operations::decode_byte(&response[ind]) {
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string.push_str(&key_str[..]);
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}
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len -= 1;
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ind += 1;
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}
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Some(string)
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}
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pub fn set_string(& mut self, ped:usize, key:&str) {
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self.set_type(ped, Type::String);
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if key.len() > 38 {
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error!("The size of each string must be smaller than or equal to 38.");
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}
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let encoded_vector = match key_operations::encode_string(&key) {
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Some(x) => x,
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None => error!("Could not encode string!"),
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};
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self.compile_string_data(ped, encoded_vector);
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}
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fn compile_string_data(& mut self, ped:usize, enc_vec:Vec<u8>) {
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let len = enc_vec.len() as u8;
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if self.ped_data[ped].length + len > 38 {
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error!("The size of the accumulated string must be smaller than or equal to 38.")
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}
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let start_byte = self.ped_data[ped].length as usize;
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for (i, c) in enc_vec.iter().enumerate() {
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self.ped_data[ped].data[start_byte + i] = *c;
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}
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self.ped_data[ped].length += len;
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self.ped_data[ped].header[2] = self.ped_data[ped].length;
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self.ped_data[ped].data[0] = self.ped_data[ped].length;
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}
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}
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