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Remove terminfo dependency

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Fixes #4597.

Co-authored-by: Christian Duerr <contact@christianduerr.com>
This commit is contained in:
Caden Haustein 2020-12-22 02:38:50 +00:00 committed by GitHub
parent 5725f5812c
commit 8982000f01
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 50 additions and 75 deletions
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69
Cargo.lock generated
View file

@ -75,6 +75,7 @@ dependencies = [
"alacritty_config_derive",
"base64",
"bitflags",
"dirs",
"libc",
"log",
"mio",
@ -89,7 +90,6 @@ dependencies = [
"serde_json",
"serde_yaml",
"signal-hook",
"terminfo",
"unicode-width",
"vte",
"winapi 0.3.9",
@ -1482,44 +1482,6 @@ version = "2.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d4fd5641d01c8f18a23da7b6fe29298ff4b55afcccdf78973b24cf3175fee32e"
[[package]]
name = "phf"
version = "0.8.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "3dfb61232e34fcb633f43d12c58f83c1df82962dcdfa565a4e866ffc17dafe12"
dependencies = [
"phf_shared",
]
[[package]]
name = "phf_codegen"
version = "0.8.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "cbffee61585b0411840d3ece935cce9cb6321f01c45477d30066498cd5e1a815"
dependencies = [
"phf_generator",
"phf_shared",
]
[[package]]
name = "phf_generator"
version = "0.8.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "17367f0cc86f2d25802b2c26ee58a7b23faeccf78a396094c13dced0d0182526"
dependencies = [
"phf_shared",
"rand",
]
[[package]]
name = "phf_shared"
version = "0.8.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "c00cf8b9eafe68dde5e9eaa2cef8ee84a9336a47d566ec55ca16589633b65af7"
dependencies = [
"siphasher",
]
[[package]]
name = "pkg-config"
version = "0.3.19"
@ -1587,7 +1549,6 @@ dependencies = [
"rand_chacha",
"rand_core",
"rand_hc",
"rand_pcg",
]
[[package]]
@ -1618,15 +1579,6 @@ dependencies = [
"rand_core",
]
[[package]]
name = "rand_pcg"
version = "0.2.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "16abd0c1b639e9eb4d7c50c0b8100b0d0f849be2349829c740fe8e6eb4816429"
dependencies = [
"rand_core",
]
[[package]]
name = "raw-window-handle"
version = "0.3.3"
@ -1879,12 +1831,6 @@ dependencies = [
"libc",
]
[[package]]
name = "siphasher"
version = "0.3.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "fa8f3741c7372e75519bd9346068370c9cdaabcc1f9599cbcf2a2719352286b7"
[[package]]
name = "slab"
version = "0.4.2"
@ -1991,19 +1937,6 @@ dependencies = [
"winapi-util",
]
[[package]]
name = "terminfo"
version = "0.7.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "76971977e6121664ec1b960d1313aacfa75642adc93b9d4d53b247bd4cb1747e"
dependencies = [
"dirs",
"fnv",
"nom",
"phf",
"phf_codegen",
]
[[package]]
name = "textwrap"
version = "0.11.0"

2
alacritty_terminal/Cargo.toml
View file

@ -24,8 +24,8 @@ mio-extras = "2"
log = "0.4"
unicode-width = "0.1"
base64 = "0.12.0"
terminfo = "0.7.1"
regex-automata = "0.1.9"
dirs = "2.0.2"
[target.'cfg(unix)'.dependencies]
nix = "0.18.0"

54
alacritty_terminal/src/tty/mod.rs
View file

@ -1,9 +1,8 @@
//! TTY related functionality.
use std::path::PathBuf;
use std::{env, io};
use terminfo::Database;
use crate::config::Config;
#[cfg(not(windows))]
@ -65,10 +64,8 @@ pub fn setup_env<C>(config: &Config<C>) {
// Default to 'alacritty' terminfo if it is available, otherwise
// default to 'xterm-256color'. May be overridden by user's config
// below.
env::set_var(
"TERM",
if Database::from_name("alacritty").is_ok() { "alacritty" } else { "xterm-256color" },
);
let terminfo = if terminfo_exists("alacritty") { "alacritty" } else { "xterm-256color" };
env::set_var("TERM", terminfo);
// Advertise 24-bit color support.
env::set_var("COLORTERM", "truecolor");
@ -81,3 +78,48 @@ pub fn setup_env<C>(config: &Config<C>) {
env::set_var(key, value);
}
}
/// Check if a terminfo entry exists on the system.
fn terminfo_exists(terminfo: &str) -> bool {
// Get first terminfo character for the parent directory.
let first = terminfo.get(..1).unwrap_or_default();
let first_hex = format!("{:x}", first.chars().next().unwrap_or_default() as usize);
// Return true if the terminfo file exists at the specified location.
macro_rules! check_path {
($path:expr) => {
if $path.join(first).join(terminfo).exists()
|| $path.join(&first_hex).join(terminfo).exists()
{
return true;
}
};
}
if let Some(dir) = env::var_os("TERMINFO") {
check_path!(PathBuf::from(&dir));
} else if let Some(home) = dirs::home_dir() {
check_path!(home.join(".terminfo"));
}
if let Ok(dirs) = env::var("TERMINFO_DIRS") {
for dir in dirs.split(':') {
check_path!(PathBuf::from(dir));
}
}
if let Ok(prefix) = env::var("PREFIX") {
let path = PathBuf::from(prefix);
check_path!(path.join("etc/terminfo"));
check_path!(path.join("lib/terminfo"));
check_path!(path.join("share/terminfo"));
}
check_path!(PathBuf::from("/etc/terminfo"));
check_path!(PathBuf::from("/lib/terminfo"));
check_path!(PathBuf::from("/usr/share/terminfo"));
check_path!(PathBuf::from("/boot/system/data/terminfo"));
// No valid terminfo path has been found.
false
}