Struct tinf::Desc

pub struct Desc { /* fields omitted */ }

The names and capabilities that make up a terminal description.

Predefined capabilities are read by indexing a Desc object with a Boolean, Number, or String capability name. For example, desc[bw] returns a bool, desc[cols] returns a u16, and &desc[setaf] returns a &[u8]. User-defined capabilities are queried using the get_*_ext() methods.

An absent capability will be false, 0xffff, or an empty slice, for booleans, numbers, and strings respectively.

The desc! macro provides syntax for Desc literals.

Examples

Read the description for xterm-256color and look up the rs1 capability:

use tinf::Desc;
use tinf::cap::rs1;

let mut file = Desc::file("xterm-256color")?;
let desc = Desc::parse(&mut file)?;
assert_eq!(&desc[rs1], b"\x1bc\x1b]104\x07");

Methods

impl Desc

fn file(term_name: &str) -> Result<File, DescError>

Finds and opens the compiled terminfo description for the terminal named by term_name.

This assumes that the local terminfo database uses a directory tree format for storing compiled descriptions, and it searches in these directories:

1. The directory named by the TERMINFO environment variable.
2. $HOME/.terminfo
3. The list of directories named by the TERMINFO_DIRS environment variable (with empty entries replaced by /usr/share/terminfo).
4. /etc/terminfo
5. /lib/terminfo
6. /usr/share/terminfo

For each directory, file checks for a description named term_name in a subdirectory named by the first letter of term_name as a character or hex representation, for example /x/xterm or /78/xterm. (Note that if term_name has more than one path component, only the last one is used).

Errors

This returns an error if file could not find and open a description for term_name, or if term_name is invalid.

fn parse(r: &mut Read) -> Result<Desc, DescError>

Creates a Desc from a compiled terminfo description.

Errors

This returns an error if the input is not a valid terminfo description.

fn current() -> &'static Desc

The description for the terminal type from the TERM environment variable, or the "dumb terminal" description if TERM is empty.

fn names(&self) -> &[String]

The terminal's names.

fn get_bool_ext(&self, name: &UserDef) -> bool

Query a user-defined boolean capability.

If the capability is absent, returns false.

fn bool_exts(&self) -> Vec<&UserDef>

List the names of any user-defined boolean capabilities.

fn get_num_ext(&self, name: &UserDef) -> u16

Query a user-defined numeric capability.

If the capability is absent, returns 0xffff.

fn num_exts(&self) -> Vec<&UserDef>

List the names of any user-defined numeric capabilities.

fn get_str_ext(&self, name: &UserDef) -> &[u8]

Query a user-defined string capability.

If the capability is absent, returns an empty slice.

fn str_exts(&self) -> Vec<&UserDef>

List the names of any user-defined string capabilities.

Trait Implementations

impl Index<Boolean> for Desc

type Output = bool

The returned type after indexing

fn index(&self, idx: Boolean) -> &bool

The value of the boolean capability named by index.

impl Index<Number> for Desc

type Output = u16

The returned type after indexing

fn index(&self, idx: Number) -> &u16

The value of the numeric capability named by index.

impl Index<String> for Desc

type Output = [u8]

The returned type after indexing

fn index(&self, idx: String) -> &[u8]

The value of the string capability named by index.

impl Clone for Desc

fn clone(&self) -> Desc

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Desc

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.