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mirror of https://github.com/wez/wezterm.git synced 2024-12-24 05:42:03 +03:00

add truncate_left_to_width

refs: #647
This commit is contained in:
Wez Furlong 2021-04-27 06:20:37 -07:00
parent 7e996950f6
commit c4dc358282
4 changed files with 50 additions and 1 deletions

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@ -151,6 +151,37 @@ pub fn make_lua_context(config_file: &Path) -> anyhow::Result<Lua> {
)?,
)?;
wezterm_mod.set(
"truncate_left_to_width",
lua.create_function(
|_, (s, max_width, min_width): (String, usize, Option<usize>)| {
let mut result = vec![];
let mut len = 0;
for g in s.graphemes(true).rev() {
let g_len = grapheme_column_width(g);
if g_len + len > max_width {
break;
}
result.push(g);
len += g_len;
}
if let Some(min_width) = min_width {
while len < min_width {
if len >= max_width {
break;
}
result.push(" ");
len += 1;
}
}
result.reverse();
Ok(result.join(""))
},
)?,
)?;
wezterm_mod.set("font", lua.create_function(font)?)?;
wezterm_mod.set(
"font_with_fallback",

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@ -46,7 +46,7 @@ As features stabilize some brief notes about them will accumulate here.
* Fixed: tabs would remain hovered after moving the mouse down into the main terminal area [#591](https://github.com/wez/wezterm/issues/591)
* New: [tab_bar_at_bottom](config/lua/config/tab_bar_at_bottom.md) setting to put the tab bar at the bottom of the window [#278](https://github.com/wez/wezterm/issues/278)
* New: [wezterm.column_width](config/lua/wezterm/column_width.md) function for measuring the displayed width of a string
* New: [wezterm.truncate_to_width](config/lua/wezterm/truncate_to_width.md) function for truncating/padding a string based on its displayed width
* New: [wezterm.truncate_to_width](config/lua/wezterm/truncate_to_width.md) and [wezterm.truncate_left_to_width](config/lua/wezterm/truncate_left_to_width.md) function for truncating/padding a string based on its displayed width
### 20210405-110924-a5bb5be8

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@ -0,0 +1,15 @@
# wezterm.truncate_left_to_width(string, max_width, min_width)
*Since: nightly builds only*
Returns a copy of `string` that is no longer than `max_width` columns
(as measured by [wezterm.column_width](column_width.md)), and, optionally,
no shorter than `min_width` columns, padding out with spaces.
Truncation and padding occur on the left hand side of the string.
For example, `wezterm.truncate_to_width("hello", 3)` returns `"llo"`,
and `wezterm.truncate_to_width("a", 10, 5)` returns " a"`.
See also: [wezterm.truncate_to_width](truncate_to_width.md)

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@ -6,6 +6,9 @@ Returns a copy of `string` that is no longer than `max_width` columns
(as measured by [wezterm.column_width](column_width.md)), and, optionally,
no shorter than `min_width` columns, padding out with spaces.
Truncation and padding occur on the right hand side of the string.
For example, `wezterm.truncate_to_width("hello", 3)` returns `"hel"`,
and `wezterm.truncate_to_width("a", 10, 5)` returns "a "`.
See also: [wezterm.truncate_left_to_width](truncate_left_to_width.md)