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202 lines
8.5 KiB
Markdown
202 lines
8.5 KiB
Markdown
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---
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layout: default
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title: PTY
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parent: API
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nav_order: 1
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permalink: /api/pty
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---
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# PTY
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**Inherits:** [Node] < [Object]
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*Linux and macOS only.*
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Node for forking processes (e.g. bash, nodejs, python) with pseudoterminal file descriptors.
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Can be used with the [Terminal] node to get an actual shell.
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Not currently supported on Windows, but it could be in the future using [ConPTY](https://docs.microsoft.com/en-us/windows/console) or [WinPTY](https://github.com/rprichard/winpty).
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See issue [\#25](https://github.com/lihop/godot-xterm/issues/25).
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## Overview
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<sub>"PTY Diagram" is a derivative of [Termios-script-diagram.svg](https://commons.wikimedia.org/wiki/File:Termios-script-diagram.svg) by [Krishnavedala](https://en.wikipedia.org/wiki/User:Krishnavedala?rdfrom=commons:User:Krishnavedala), used under [CC0](https://creativecommons.org/share-your-work/public-domain/cc0/).
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## Properties
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| Type | Name | Default |
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|--------------|--------------------------------------|--------------------------------------------------------|
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| [NodePath] | [terminal_path](#prop-terminal_path) | None |
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| [int] | [cols](#prop-cols) | `80` |
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| [int] | [rows](#prop-rows) | `24` |
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| [Dictionary] | [env](#prop-env) | `{ COLORTERM = "truecolor", TERM = "xterm-256color" }` |
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| [bool] | [use_os_env](#prop-use_os_env) | `true` |
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## Methods
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| Returns | Signature |
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|---------|-------------------------------------------------------------------------------------------------------------------------------------|
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| [Error] | [fork](#mthd-fork) **(** [String] file=`$SHELL`, [PoolStringArray] args=[], [String] cwd=`$PWD`, [int] cols=80, [int] rows=24 **)** |
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| void | [kill](#mthd-kill) **(** [int] signum **)** |
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| [Error] | [open](#mthd-open) **(** [int] cols=80, [int] rows=24 **)** |
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| void | [resize](#mthd-resize) **(** [int] cols, [int] rows **)** |
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| void | [resizev](#mthd-resizev) **(** [Vector2] size **)** |
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| void | [write](#mthd-write) **(** [String]\|[PoolByteArray] data **)** |
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## Signals
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- <a name="sgnl-data_received" /> **data_received** **(** [PoolByteArray] data **)**
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Emitted when data is read from the pseudoterminal master device.
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---
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- <a name="sgnl-exited" /> **exited** **(** [int] exit_code, [int] signum **)**
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Emitted when the child program exits. `exit_code` is the exit status of the child program and `signum` is the number of the signal that terminated the child program.
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## Enumerations
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### <a name="enum-signal" /> enum **Signal**:
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- **SIGHUP** = 1 --- Hangup.
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- **SIGINT** = 2 --- Terminal interrupt signal.
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- **SIGQUIT** = 3 --- Terminal quit signal.
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- **SIGILL** = 4 --- Illegal instruction.
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- **SIGTRAP** = 5 --- Trace/breakpoint trap.
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- **SIGABRT** = 6 --- Process abort signal.
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- **SIGFPE** = 8 --- Erroneous arithmetic operation.
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- **SIGKILL** = 9 --- Kill (cannot be caught or ignored).
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- **SIGSEGV** = 11 --- Invalid memory reference.
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- **SIGPIPE** = 13 --- Write on a pipe with no one to read it.
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- **SIGALRM** = 14 --- Alarm clock.
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- **SIGTERM** = 15 --- Termination signal.
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## Property Descriptions
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### <a name="prop-terminal_path" /> [NodePath] **terminal_path**
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|-----------|--------------------------|
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| *Default* | None |
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| *Setter* | set_terminal_path(value) |
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| *Getter* | None |
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[NodePath] to a [Terminal]. Setting this path will automatically connect the appropriate signals of both nodes for standard operation. It will also disconnected the signals of the previously set terminal, if any.
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---
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- <a name="prop-cols" /> [int] **cols**
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|-----------|--------------------------|
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| *Default* | `80` |
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| *Setter* | set_cols(value) |
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| *Getter* | None |
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The column size in characters.
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---
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- <a name="prop-rows" /> [int] **rows**
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|-----------|--------------------------|
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| *Default* | `24` |
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| *Setter* | set_rows(value) |
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| *Getter* | None |
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The row size in characters.
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---
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- <a name="prop-env" /> [Dictionary] **env**
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|-----------|--------------------------------------------------------|
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| *Default* | `{ COLORTERM = "truecolor", TERM = "xterm-256color" }` |
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| *Setter* | None |
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| *Getter* | None |
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Environment variables to be set for the child program.
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---
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- <a name="prop-use_os_env" /> [bool] **use_os_env**
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|-----------|--------|
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| *Default* | `true` |
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| *Setter* | None |
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| *Getter* | None |
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If `true` the environment variables from `env` will be merged with the environment variables of the current program (i.e. Godot), with the variables from `env` taking precedence over the environment variables of the current program.
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## Method Descriptions
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- <a name="mthd-fork" /> [Error] **fork** **(** [String] file=`$SHELL`, [PoolStringArray] args=[], [String] cwd=`$PWD`, [int] cols=80, [int] rows=24 **)**
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{ .red }
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Opens a pseudoterminal and starts a new process using the program specified by `file`.
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`file` defaults to the value of the `SHELL` environment variable, falling back to `sh`.
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The arguments specified in `args` are passed to the program.
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`cwd` is the directory in which the program will be executed. Defaults to the working directory of the current program (typically the project directory, when running from editor).
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`cols` is the initial number of columns and `rows` is the initial number of rows.
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Returns [OK] if successful.
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See also Godot's [OS.execute()](https://docs.godotengine.org/en/stable/classes/class_os.html#class-os-method-execute) method.
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---
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- <a name="mthd-kill" /> void **kill** **(** [int] signum=1 **)**
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Sends the specified signal (`signum`) to the PTY's child process, if any. Defaults to 1 (SIGHUP).
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See also Godot's [OS.kill()](https://docs.godotengine.org/en/stable/classes/class_os.html#class-os-method-kill) method.
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---
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- <a name="mthd-open" /> [Error] **open** **(** [int] cols=80, [int] rows=24 **)**
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Opens a pseudoterminal but does not start any process. Returns [OK] if successful.
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---
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- <a name="mthd-resize" /> void **resize** **(** [int] cols, [int] rows **)**
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Resizes the dimensions of the pseudoterminal.
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---
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- <a name="mthd-resizev" /> void **resizev** **(** [Vector2] size **)**
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Same as resize, but accepts a [Vector2] where `x` is cols and `y` is rows.
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---
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- <a name="mthd-write" /> void **write** **(** [String] \| [PoolByteArray] data **)**
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Writes data to the pseudoterminal master device.
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[Dictionary]: https://docs.godotengine.org/en/stable/classes/class_dictionary.html
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[Error]: https://docs.godotengine.org/en/stable/classes/class_%40globalscope.html#enum-globalscope-error
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[Node]: https://docs.godotengine.org/en/stable/classes/class_node.html
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[NodePath]: https://docs.godotengine.org/en/stable/classes/class_nodepath.html
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[Object]: https://docs.godotengine.org/en/stable/classes/class_object.html
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[OK]: https://docs.godotengine.org/en/stable/classes/class_%40globalscope.html#class-globalscope-constant-ok
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[PoolByteArray]: https://docs.godotengine.org/en/stable/classes/class_poolbytearray.html
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[PoolStringArray]: https://docs.godotengine.org/en/stable/classes/class_poolstringarray.html
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[String]: https://docs.godotengine.org/en/stable/classes/class_string.html
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[Terminal]: /api/terminal
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[Vector2]: https://docs.godotengine.org/en/stable/classes/class_vector2.html
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[bool]: https://docs.godotengine.org/en/stable/classes/class_bool.html
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[int]: https://docs.godotengine.org/en/stable/classes/class_int.html
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