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use lib::core::node_descriptors::NodeDescriptor;
use lib::git::{Commit, NonZeroOid};
#[cfg(unix)]
pub fn prompt_select_commit(
header: Option<&str>,
initial_query: &str,
commits: Vec<Commit>,
commit_descriptors: &mut [&mut dyn NodeDescriptor],
) -> eyre::Result<Option<NonZeroOid>> {
skim::prompt_skim(header, initial_query, commits, commit_descriptors)
}
#[cfg(not(unix))]
pub fn prompt_select_commit(
header: Option<&str>,
initial_query: &str,
commits: Vec<Commit>,
commit_descriptors: &mut [&mut dyn NodeDescriptor],
) -> eyre::Result<Option<NonZeroOid>> {
unimplemented!("Non-unix targets are currently unsupported for prompting")
}
#[cfg(unix)]
mod skim {
use eyre::eyre;
use std::borrow::Cow;
use std::convert::TryFrom;
use std::sync::Arc;
use itertools::Itertools;
use lib::core::formatting::Glyphs;
use lib::core::node_descriptors::{render_node_descriptors, NodeDescriptor, NodeObject};
use lib::git::{Commit, NonZeroOid};
use skim::{
prelude::SkimOptionsBuilder, AnsiString, DisplayContext, ItemPreview, Matches,
PreviewContext, Skim, SkimItem, SkimItemReceiver, SkimItemSender,
};
#[derive(Debug)]
pub struct CommitSkimItem {
pub oid: NonZeroOid,
pub styled_summary: String,
pub styled_preview: String,
}
impl SkimItem for CommitSkimItem {
fn text(&self) -> Cow<str> {
AnsiString::parse(&self.styled_summary).into_inner()
}
fn display<'b>(&'b self, context: DisplayContext<'b>) -> AnsiString<'b> {
let mut text = AnsiString::parse(&self.styled_summary);
match context.matches {
Matches::CharIndices(indices) => {
text.override_attrs(
indices
.iter()
.map(|&i| {
(
context.highlight_attr,
(u32::try_from(i).unwrap(), u32::try_from(i + 1).unwrap()),
)
})
.collect(),
);
}
Matches::CharRange(start, end) => {
text.override_attrs(vec![(
context.highlight_attr,
(u32::try_from(start).unwrap(), u32::try_from(end).unwrap()),
)]);
}
Matches::ByteRange(start, end) => {
let start = text.stripped()[..start].chars().count();
let end = start + text.stripped()[start..end].chars().count();
text.override_attrs(vec![(
context.highlight_attr,
(u32::try_from(start).unwrap(), u32::try_from(end).unwrap()),
)]);
}
Matches::None => (),
}
text
}
fn preview(&self, _context: PreviewContext) -> ItemPreview {
ItemPreview::AnsiText(self.styled_preview.to_owned())
}
}
impl CommitSkimItem {
fn from_descriptors(
commit: &Commit,
commit_descriptors: &mut [&mut dyn NodeDescriptor],
) -> eyre::Result<Self> {
let glyphs = Glyphs::pretty();
let styled_summary = render_node_descriptors(
&glyphs,
&NodeObject::Commit {
commit: commit.clone(),
},
commit_descriptors,
)?;
Ok(CommitSkimItem {
oid: commit.get_oid(),
styled_summary: glyphs.render(styled_summary)?,
styled_preview: Glyphs::pretty().render(commit.friendly_preview()?)?,
})
}
}
#[cfg(unix)]
pub fn prompt_skim(
header: Option<&str>,
initial_query: &str,
commits: Vec<Commit>,
commit_descriptors: &mut [&mut dyn NodeDescriptor],
) -> eyre::Result<Option<NonZeroOid>> {
let options = SkimOptionsBuilder::default()
.height(Some("100%"))
.preview(Some(""))
.preview_window(Some("up:70%"))
.sync(true) .bind(vec!["Enter:accept"])
.header(header)
.query(Some(initial_query))
.build()
.map_err(|e| eyre!("building Skim options failed: {}", e))?;
let items: Vec<CommitSkimItem> = commits
.iter()
.map(|commit| CommitSkimItem::from_descriptors(commit, commit_descriptors))
.try_collect()?;
let rx_item = {
let (tx_item, rx_item): (SkimItemSender, SkimItemReceiver) = skim::prelude::unbounded();
for i in items {
tx_item.send(Arc::new(i))?;
}
rx_item
};
match Skim::run_with(&options, Some(rx_item)) {
Some(result) => {
if result.is_abort {
return Ok(None);
}
let selected = result
.selected_items
.first()
.and_then(|item| (*item).as_any().downcast_ref::<CommitSkimItem>());
Ok(selected.map(|c| c.oid))
}
None => Ok(None),
}
}
}