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  1. 4
      CHANGELOG.md
  2. 674
      COPYING
  3. 13
      Cargo.toml
  4. 133
      README.md
  5. 962
      src/lib.rs

4
CHANGELOG.md
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0.1.0 (2019-06-12)
==================
* Initial version.

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COPYING
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GNU GENERAL PUBLIC LICENSE
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You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<https://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<https://www.gnu.org/licenses/why-not-lgpl.html>.

13
Cargo.toml
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@ -0,0 +1,13 @@
[package]
name = "gtp"
version = "0.1.0"
authors = ["Weird Constructor <weirdconstructor@gmail.com>"]
edition = "2018"
license = "GPL-3.0-or-later"
description = "GTP (Go Text Protocol) controller implementation for Rust"
repository = "https://github.com/WeirdConstructor/gtp-rs"
readme = "README.md"
keywords = ["GTP","Go","Baduk","Weiqi","protocol"]
categories = ["parsing","parser-implementations","network-programming"]
[dependencies]

133
README.md
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@ -1,3 +1,130 @@
# gtp-rs
GTP (Go Text Protocol) controller implementation for Rust.
GTP - A Go Text Protocol controller implementation for Rust
===========================================================
This crate implements currently just a parser and serializer for
the Go Text Protocol as needed for writing a GTP controller to
control a GTP engine.
See also:
* [GTP (Go Text Protocol)](https://www.lysator.liu.se/~gunnar/gtp/)
# Usage
Sending commands:
```
use gtp;
let mut c = gtp::Command::new("list_commands");
assert_eq!(c.to_string(), "list_commands\n");
```
Sending commands with entities:
```
use gtp::Command;
assert_eq!(Command::new("clear_board").to_string(), "clear_board\n");
assert_eq!(Command::new_with_args("boardsize", |eb| eb.i(19)).to_string(),
"boardsize 19\n");
```
Receiving Responses:
```
let mut rp = gtp::ResponseParser::new();
rp.feed("= o");
rp.feed("k\n\n");
rp.feed("=\nA\nB\n\n= white b3\n\n");
assert_eq!(rp.get_response().unwrap().unwrap().text(), "ok");
assert_eq!(rp.get_response().unwrap().unwrap().text(), "\nA\nB\n");
// And processing entities in the response:
let mut ep = gtp::EntityParser::new(&rp.get_response().unwrap().unwrap().text());
let res = ep.mv().result().unwrap();
assert_eq!(res[0].to_string(), "w B3");
match res[0] {
gtp::Entity::Move((color, (h, v))) => {
assert_eq!(color, gtp::Color::W);
assert_eq!(h, 2);
assert_eq!(v, 3);
},
_ => {},
}
```
# Future
Currently I work on a GTP controller via tokio_process, as the dependency on tokio is quite heavy I
would not like to burden this little crate with that. But what I could see is a GTP controller
based on std::process which uses threads for communicating with the GTP engine in the background.
# License
This project is licensed under the GNU General Public License Version 3 or later.
## Why GPL?
Picking a license for my code bothered me for a long time. I read many
discussions about this topic. Read the license explanations. And discussed
this matter with other developers.
First about _why I write code for free_ at all:
- It's my passion to write computer programs. In my free time I can
write the code I want, when I want and the way I want. I can freely
allocate my time and freely choose the projects I want to work on.
- To help a friend or member of my family.
- To solve a problem I have.
Those are the reasons why I write code for free. Now the reasons
_why I publish the code_, when I could as well keep it to myself:
- So that it may bring value to users and the free software community.
- Show my work as an artist.
- To get into contact with other developers.
- And it's a nice change to put some more polish on my private projects.
Most of those reasons don't yet justify GPL. The main point of the GPL, as far
as I understand: The GPL makes sure the software stays free software until
eternity. That the user of the software always stays in control. That the users
have _at least the means_ to adapt the software to new platforms or use cases.
Even if the original authors don't maintain the software anymore.
It ultimately prevents _"vendor lock in"_. I really dislike vendor lock in,
especially as developer. Especially as developer I want and need to stay
in control of the computers I use.
Another point is, that my work has a value. If I give away my work without
_any_ strings attached, I effectively work for free. Work for free for
companies. I would compromise the price I can demand for my skill, workforce
and time.
This makes two reasons for me to choose the GPL:
1. I do not want to support vendor lock in scenarios. At least not for free.
I want to prevent those when I have a choice.
And before you ask, yes I work for a company that sells closed source
software. I am not happy about the closed source fact.
But it pays my bills and gives me the freedom to write free software
in my free time.
2. I don't want to low ball my own wage and prices by giving away free software
with no strings attached (for companies).
## If you need a permissive or private license (MIT)
Please contact me if you need a different license and really want to use
my code. As long as I am the only author, I can change the license.
We might find an agreement.
# Contribution
Unless you explicitly state otherwise, any contribution intentionally submitted
for inclusion in WLambda by you, shall be licensed as GPLv3 or later,
without any additional terms or conditions.
# Authors
* Weird Constructor <weirdconstructor@gmail.com>
(You may find me as `WeirdConstructor` on the Rust Discord.)

962
src/lib.rs
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@ -0,0 +1,962 @@
// Copyright (c) 2019 Weird Constructor <weirdconstructor@gmail.com>
// This is a part of gtp-rs. See README.md and COPYING for details.
/*!
A GTP (Go Text Protocol) controller implementation for Rust
===========================================================
This crate implements currently just a parser and serializer for
the Go Text Protocol as needed for writing a GTP controller to
control a GTP engine.
See also:
* [GTP (Go Text Protocol)](https://www.lysator.liu.se/~gunnar/gtp/)
# Usage
Sending commands:
```
use gtp;
let mut c = gtp::Command::new("list_commands");
assert_eq!(c.to_string(), "list_commands\n");
```
Sending commands with entities:
```
use gtp::Command;
assert_eq!(Command::new("clear_board").to_string(), "clear_board\n");
assert_eq!(Command::new_with_args("boardsize", |eb| eb.i(19)).to_string(),
"boardsize 19\n");
```
Receiving Responses:
```
let mut rp = gtp::ResponseParser::new();
rp.feed("= o");
rp.feed("k\n\n");
rp.feed("=\nA\nB\n\n= white b3\n\n");
assert_eq!(rp.get_response().unwrap().unwrap().text(), "ok");
assert_eq!(rp.get_response().unwrap().unwrap().text(), "\nA\nB\n");
// And processing entities in the response:
let mut ep = gtp::EntityParser::new(&rp.get_response().unwrap().unwrap().text());
let res = ep.mv().result().unwrap();
assert_eq!(res[0].to_string(), "w B3");
match res[0] {
gtp::Entity::Move((color, (h, v))) => {
assert_eq!(color, gtp::Color::W);
assert_eq!(h, 2);
assert_eq!(v, 3);
},
_ => {},
}
```
# Future
Currently I work on a GTP controller via tokio_process, as the dependency on tokio is quite heavy I
would not like to burden this little crate with that. But what I could see is a GTP controller
based on std::process which uses threads for communicating with the GTP engine in the background.
# License
This project is licensed under the GNU General Public License Version 3 or
later.
## Why GPL?
Picking a license for my code bothered me for a long time. I read many
discussions about this topic. Read the license explanations. And discussed
this matter with other developers.
First about _why I write code for free_ at all:
- It's my passion to write computer programs. In my free time I can
write the code I want, when I want and the way I want. I can freely
allocate my time and freely choose the projects I want to work on.
- To help a friend or member of my family.
- To solve a problem I have.
Those are the reasons why I write code for free. Now the reasons
_why I publish the code_, when I could as well keep it to myself:
- So that it may bring value to users and the free software community.
- Show my work as an artist.
- To get into contact with other developers.
- And it's a nice change to put some more polish on my private projects.
Most of those reasons don't yet justify GPL. The main point of the GPL, as far
as I understand: The GPL makes sure the software stays free software until
eternity. That the user of the software always stays in control. That the users
have _at least the means_ to adapt the software to new platforms or use cases.
Even if the original authors don't maintain the software anymore.
It ultimately prevents _"vendor lock in"_. I really dislike vendor lock in,
especially as developer. Especially as developer I want and need to stay
in control of the computers I use.
Another point is, that my work has a value. If I give away my work without
_any_ strings attached, I effectively work for free. Work for free for
companies. I would compromise the price I can demand for my skill, workforce
and time.
This makes two reasons for me to choose the GPL:
1. I do not want to support vendor lock in scenarios. At least not for free.
I want to prevent those when I have a choice.
And before you ask, yes I work for a company that sells closed source
software. I am not happy about the closed source fact.
But it pays my bills and gives me the freedom to write free software
in my free time.
2. I don't want to low ball my own wage and prices by giving away free software
with no strings attached (for companies).
## If you need a permissive or private license (MIT)
Please contact me if you need a different license and really want to use
my code. As long as I am the only author, I can change the license.
We might find an agreement.
# Contribution
Unless you explicitly state otherwise, any contribution intentionally submitted
for inclusion in WLambda by you, shall be licensed as GPLv3 or later,
without any additional terms or conditions.
# Authors
* Weird Constructor <weirdconstructor@gmail.com>
(You may find me as `WeirdConstructor` on the Rust Discord.)
*/
/// The color of a move
#[derive(Debug, Clone, Copy, PartialEq)]
pub enum Color {
W,
B,
}
/// Helper class for constructing an Entity data structure.
///
/// Use it like this:
/// ```
/// use gtp;
/// let mut eb = gtp::EntityBuilder::new();
/// eb.v((19, 19));
/// assert_eq!(eb.build().to_string(), "T19");
/// ```
///
/// Alternatively you can use the [`entity`](fn.entity.html) function:
///
/// ```
/// use gtp;
/// let ent = gtp::entity(|eb| eb.v((19, 19)));
/// assert_eq!(ent.to_string(), "T19");
/// ```
#[derive(Debug, Clone, PartialEq)]
pub struct EntityBuilder {
list: Vec<Entity>,
current: Option<Entity>,
}
/// Entity building helper function.
///
/// ```
/// use gtp;
/// assert_eq!(gtp::entity(|eb| eb.v_pass()).to_string(), "pass");
/// ```
pub fn entity<T>(f: T) -> Entity
where T: Fn(&mut EntityBuilder) -> &mut EntityBuilder {
let mut b = EntityBuilder::new();
f(&mut b);
b.build()
}
impl EntityBuilder {
/// Constructs a new entity builder.
///
/// Please note there are helper functions like [`entity`](fn.entity.html)
/// Or [`args` of Command](struct.Command.html#method.args).
pub fn new() -> EntityBuilder {
EntityBuilder {
list: Vec::new(),
current: None,
}
}
pub fn i(&mut self, i: u32) -> &mut Self {
if self.current.is_some() { self.list.push(self.current.take().unwrap()); }
self.current = Some(Entity::Int(i));
self
}
pub fn f(&mut self, f: f32) -> &mut Self {
if self.current.is_some() { self.list.push(self.current.take().unwrap()); }
self.current = Some(Entity::Float(f));
self
}
pub fn s(&mut self, s: &str) -> &mut Self {
if self.current.is_some() { self.list.push(self.current.take().unwrap()); }
self.current = Some(Entity::String(s.to_string()));
self
}
pub fn v_pass(&mut self) -> &mut Self {
if self.current.is_some() { self.list.push(self.current.take().unwrap()); }
self.current = Some(Entity::Vertex((0, 0)));
self
}
pub fn v(&mut self, v: (i32, i32)) -> &mut Self {
if self.current.is_some() { self.list.push(self.current.take().unwrap()); }
self.current = Some(Entity::Vertex(v));
self
}
pub fn w(&mut self) -> &mut Self {
if self.current.is_some() { self.list.push(self.current.take().unwrap()); }
self.current = Some(Entity::Color(Color::W));
self
}
pub fn b(&mut self) -> &mut Self {
if self.current.is_some() { self.list.push(self.current.take().unwrap()); }
self.current = Some(Entity::Color(Color::B));
self
}
pub fn bool(&mut self, b: bool) -> &mut Self {
if self.current.is_some() { self.list.push(self.current.take().unwrap()); }
self.current = Some(Entity::Boolean(b));
self
}
pub fn color(&mut self, b: bool) -> &mut Self {
if self.current.is_some() { self.list.push(self.current.take().unwrap()); }
self.current = Some(Entity::Color(if b { Color::W } else { Color::B }));
self
}
pub fn mv_w(&mut self, v: (i32, i32)) -> &mut Self {
if self.current.is_some() { self.list.push(self.current.take().unwrap()); }
self.current = Some(Entity::Move((Color::W, v)));
self
}
pub fn mv_b(&mut self, v: (i32, i32)) -> &mut Self {
if self.current.is_some() { self.list.push(self.current.take().unwrap()); }
self.current = Some(Entity::Move((Color::B, v)));
self
}
pub fn mv(&mut self, color: bool, v: (i32, i32)) -> &mut Self {
if self.current.is_some() { self.list.push(self.current.take().unwrap()); }
self.current = Some(Entity::Move((if color { Color::W } else { Color::B }, v)));
self
}
pub fn list(&mut self) -> &mut Self {
if self.current.is_some() { self.list.push(self.current.take().unwrap()); }
self.current = Some(Entity::List(self.list.clone()));
self.list = Vec::new();
self
}
pub fn build(&self) -> Entity {
self.current.clone().expect("Did not setup any entitiy in EntityBuilder!")
}
}
#[derive(Debug, Clone, PartialEq)]
pub enum Entity {
Int(u32),
Float(f32),
String(String),
Vertex((i32, i32)),
Color(Color),
Move((Color, (i32, i32))),
Boolean(bool),
List(Vec<Entity>),
}
fn gen_move_char(i: u32) -> char {
let c = if i <= 8 {
('A' as u32) + (i - 1)
} else {
('A' as u32) + i
};
if let Some(c) = std::char::from_u32(c) {
c
} else {
'Z'
}
}
impl Entity {
pub fn to_string(&self) -> String {
match self {
Entity::Int(i) => format!("{}", i),
Entity::Float(f) => format!("{}", f),
Entity::String(s) => format!("{}", s),
Entity::Vertex((h, v)) => {
let mut s = String::from("");
if *h <= 0 || *v <= 0 {
s += &format!("pass");
} else {
s += &format!("{}", gen_move_char(*h as u32));
s += &format!("{}", v);
}
s
},
Entity::Color(Color::W) => format!("w"),
Entity::Color(Color::B) => format!("b"),
Entity::Move((Color::W, (h, v))) => {
let mut s = String::from("");
if *h <= 0 || *v <= 0 {
s += &format!("w pass");
} else {
s += &format!("w {}", gen_move_char(*h as u32));
s += &format!("{}", v);
}
s
},
Entity::Move((Color::B, (h, v))) => {
let mut s = String::from("");
if *h <= 0 || *v <= 0 {
s += &format!("b pass");
} else {
s += &format!("b {}", gen_move_char(*h as u32));
s += &format!("{}", v);
}
s
},
Entity::Boolean(true) => format!("true"),
Entity::Boolean(false) => format!("false"),
Entity::List(vec) => {
let mut s = String::from("");
if vec.is_empty() { return s; }
// Try to handle at least 2 dimensional lists
// on output correctly:
let sep = if let Entity::List(_) = vec[0] {
"\n"
} else {
" "
};
for (i, e) in vec.iter().enumerate() {
if i > 0 { s += sep; }
s += &e.to_string();
}
s
}
}
}
}
#[derive(Debug, Clone, PartialEq)]
pub struct EntityParser {
buffer: String,
entities: Vec<Entity>,
parse_error: bool,
}
impl EntityParser {
pub fn new(s: &str) -> Self {
EntityParser {
buffer: String::from(s),
entities: Vec::new(),
parse_error: false,
}
}
pub fn result(&self) -> Option<Vec<Entity>> {
if self.parse_error { return None; }
return Some(self.entities.clone());
}
pub fn next(&mut self) -> String {
self.buffer = self.buffer.chars().skip_while(|c| *c == ' ' || *c == '\n').collect();
let mut s = String::from("");
let mut skip_count = 0;
for c in self.buffer.chars() {
skip_count += 1;
if c == ' ' { break; }
s.push(c);
}
self.buffer = self.buffer.chars().skip(skip_count).collect();
s
}
pub fn is_eof(&self) -> bool { self.buffer.is_empty() }
pub fn s(&mut self) -> &mut Self {
let s = self.next();
if s.is_empty() { self.parse_error = true; return self; }
self.entities.push(Entity::String(s));
self
}
pub fn i(&mut self) -> &mut Self {
let s = self.next();
if let Ok(i) = s.parse::<u32>() {
self.entities.push(Entity::Int(i));
} else {
self.parse_error = true;
}
self
}
pub fn f(&mut self) -> &mut Self {
let s = self.next();
if let Ok(f) = s.parse::<f32>() {
self.entities.push(Entity::Float(f));
} else {
self.parse_error = true;
}
self
}
pub fn color(&mut self) -> &mut Self {
let s = self.next();
let s = s.to_lowercase();
if s == "w" || s == "white" { self.entities.push(Entity::Color(Color::W)); return self; }
if s == "b" || s == "black" { self.entities.push(Entity::Color(Color::B)); return self; }
self.parse_error = true;
self
}
pub fn vertex(&mut self) -> &mut Self {
let s = self.next();
let s = s.to_uppercase();
if s == "PASS" { self.entities.push(Entity::Vertex((0, 0))); return self; }
if s.len() < 2 || s.len() > 3 {
self.parse_error = true;
return self;
}
let h = s.chars().nth(0).unwrap();
if !h.is_ascii_alphabetic() {
self.parse_error = true;
return self;
}
let h = h as u32;
let mut h = (h - ('A' as u32)) + 1;
if h > 8 { h -= 1; }
let v : String = s.chars().skip(1).collect();
if let Ok(v) = i32::from_str_radix(&v, 10) {
self.entities.push(Entity::Vertex((h as i32, v)));
} else {
self.parse_error = true;
}
self
}
pub fn mv(&mut self) -> &mut Self {
self.color();
if self.parse_error { return self; }
self.vertex();
if self.parse_error { self.entities.pop(); }
let m = self.entities.pop().unwrap();
let c = self.entities.pop().unwrap();
if let Entity::Vertex((h, v)) = m {
if let Entity::Color(c) = c {
self.entities.push(Entity::Move((c, (h, v))));
return self;
}
}
self.parse_error = true;
self
}
pub fn bool(&mut self) -> &mut Self {
let s = self.next();
let s = s.to_uppercase();
if s == "TRUE" { self.entities.push(Entity::Boolean(true)); return self; }
if s == "FALSE" { self.entities.push(Entity::Boolean(false)); return self; }
self.parse_error = true;
self
}
}
/// Representation of a GTP controller to engine command.
#[derive(Debug, Clone, PartialEq)]
pub struct Command {
id: Option<u32>,
name: String,
args: Option<Entity>,
}
impl Command {
/// Constructs a new GTP controller command to be sent to the
/// GTP engine.
///
/// ```
/// use gtp;
///
/// let mut c = gtp::Command::new("list_commands");
/// c.args(|eb| eb.i(10).f(10.20).s("OK").list());
/// // send with:
/// let gtp_bytes = c.to_bytes();
/// // or if you need the string:
/// let gtp_str = c.to_string();
/// ```
pub fn new(name: &str) -> Command {
Command {
name: String::from(name),
id: None,
args: None,
}
}
/// Builds a new GTP engine command ready with the arguments:
///
/// ```
/// use gtp;
/// assert_eq!(
/// gtp::Command::new_with_args("boardsize", |eb| eb.i(9)).to_string(),
/// "boardsize 9\n");
/// ```
pub fn new_with_args<T>(name: &str, args: T) -> Command
where T: Fn(&mut EntityBuilder) -> &mut EntityBuilder {
let mut cmd = Self::new(name);
cmd.args(args);
cmd
}
/// Sets the ID of the command.
///
/// ```
/// use gtp;
///
/// let mut c = gtp::Command::new("list_commands");
/// c.set_id(12);
/// assert_eq!(c.to_string(), "12 list_commands\n");
/// ```
pub fn set_id(&mut self, id: u32) {
self.id = Some(id);
}
/// Helper function to construct Entity arguments for this Command.
///
/// ```
/// use gtp;
///
/// let mut c = gtp::Command::new("list_commands");
/// c.args(|eb| eb.i(10).f(10.20).s("OK").list());
/// assert_eq!(c.to_string(), "list_commands 10 10.2 OK\n");
/// ```
pub fn args<T>(&mut self, f: T)
where T: Fn(&mut EntityBuilder) -> &mut EntityBuilder {
let mut b = EntityBuilder::new();
f(&mut b);
self.set_args(&b.build());
}
/// Function to set Entity arguments:
///
/// ```
/// use gtp;
///
/// let mut c = gtp::Command::new("list_commands");
/// c.set_args(&gtp::entity(|eb| eb.v((19, 19))));
/// ```
pub fn set_args(&mut self, args: &Entity) {
self.args = Some(args.clone());
}
/// Generates a String representation of the GTP command.
pub fn to_string(&self) -> String {
let mut out = String::from("");
if self.id.is_some() {
out += &format!("{}", self.id.unwrap());
out += " ";
}
out += &self.name;
if !self.args.is_none() {
out += " ";
out += &self.args.as_ref().unwrap().to_string();
}
out += "\n";
out
}
/// Generates a byte vector representation of the GTP command,
/// ready to be sent to another process.
#[allow(dead_code)]
pub fn to_bytes(&self) -> Vec<u8> {
Vec::from(self.to_string().as_bytes())
}
}
/// Represents a GTP response from the GTP engine.
#[derive(Debug, Clone, PartialEq)]
pub enum Response {
Error((Option<u32>, String)),
Result((Option<u32>, String)),
}
impl Response {
pub fn text(&self) -> String {
match self {
Response::Error((_, t)) => t.clone(),
Response::Result((_, t)) => t.clone(),
}
}
}
/// A parser for a GTP response.
#[derive(Debug, Clone, PartialEq)]
pub struct ResponseParser {
buffer: String,
}