mirror of https://github.com/helix-editor/helix
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
79 lines
2.3 KiB
Rust
79 lines
2.3 KiB
Rust
use anyhow::{bail, Result};
|
|
use arc_swap::ArcSwap;
|
|
use std::{path::Path, sync::Arc};
|
|
|
|
#[cfg(feature = "git")]
|
|
pub use git::Git;
|
|
#[cfg(not(feature = "git"))]
|
|
pub use Dummy as Git;
|
|
|
|
#[cfg(feature = "git")]
|
|
mod git;
|
|
|
|
mod diff;
|
|
|
|
pub use diff::{DiffHandle, Hunk};
|
|
|
|
pub trait DiffProvider {
|
|
/// Returns the data that a diff should be computed against
|
|
/// if this provider is used.
|
|
/// The data is returned as raw byte without any decoding or encoding performed
|
|
/// to ensure all file encodings are handled correctly.
|
|
fn get_diff_base(&self, file: &Path) -> Result<Vec<u8>>;
|
|
fn get_current_head_name(&self, file: &Path) -> Result<Arc<ArcSwap<Box<str>>>>;
|
|
}
|
|
|
|
#[doc(hidden)]
|
|
pub struct Dummy;
|
|
impl DiffProvider for Dummy {
|
|
fn get_diff_base(&self, _file: &Path) -> Result<Vec<u8>> {
|
|
bail!("helix was compiled without git support")
|
|
}
|
|
|
|
fn get_current_head_name(&self, _file: &Path) -> Result<Arc<ArcSwap<Box<str>>>> {
|
|
bail!("helix was compiled without git support")
|
|
}
|
|
}
|
|
|
|
pub struct DiffProviderRegistry {
|
|
providers: Vec<Box<dyn DiffProvider>>,
|
|
}
|
|
|
|
impl DiffProviderRegistry {
|
|
pub fn get_diff_base(&self, file: &Path) -> Option<Vec<u8>> {
|
|
self.providers
|
|
.iter()
|
|
.find_map(|provider| match provider.get_diff_base(file) {
|
|
Ok(res) => Some(res),
|
|
Err(err) => {
|
|
log::info!("{err:#?}");
|
|
log::info!("failed to open diff base for {}", file.display());
|
|
None
|
|
}
|
|
})
|
|
}
|
|
|
|
pub fn get_current_head_name(&self, file: &Path) -> Option<Arc<ArcSwap<Box<str>>>> {
|
|
self.providers
|
|
.iter()
|
|
.find_map(|provider| match provider.get_current_head_name(file) {
|
|
Ok(res) => Some(res),
|
|
Err(err) => {
|
|
log::info!("{err:#?}");
|
|
log::info!("failed to obtain current head name for {}", file.display());
|
|
None
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
impl Default for DiffProviderRegistry {
|
|
fn default() -> Self {
|
|
// currently only git is supported
|
|
// TODO make this configurable when more providers are added
|
|
let git: Box<dyn DiffProvider> = Box::new(Git);
|
|
let providers = vec![git];
|
|
DiffProviderRegistry { providers }
|
|
}
|
|
}
|