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use {
super::{
argparse::{Action, Engine, Options},
fs_pipe::{slurp, spit},
input::LineIn,
types::Die,
udiff::{apply_patches, patches, pure_diffs, udiff},
},
ansi_term::Colour,
std::{ffi::OsString, path::PathBuf, sync::Arc},
};
impl Engine {
fn replace(&self, before: &str) -> String {
match self {
Self::AhoCorasick(ac, replace) => ac.replace_all(before, &[replace.as_str()]),
Self::Regex(re, replace) => re.replace_all(before, replace.as_str()).into(),
}
}
}
impl LineIn {
const fn path(&self) -> &PathBuf {
match self {
Self::Entire(path) | Self::Piecewise(path, _) => path,
}
}
}
pub async fn displace(opts: &Arc<Options>, input: LineIn) -> Result<OsString, Die> {
let path = input.path().clone();
let name = opts
.cwd
.as_ref()
.and_then(|cwd| path.strip_prefix(cwd).ok())
.unwrap_or_else(|| path.as_ref())
.as_os_str()
.to_owned();
let slurped = slurp(&path).await?;
let before = slurped.content;
let after = opts.engine.replace(&before);
if *before == after {
Ok(OsString::default())
} else {
let print = match (&opts.action, input) {
(Action::Preview, LineIn::Entire(_)) => udiff(None, opts.unified, &name, &before, &after),
(Action::Preview, LineIn::Piecewise(_, ranges)) => {
udiff(Some(&ranges), opts.unified, &name, &before, &after)
}
(Action::Commit, LineIn::Entire(_)) => {
spit(&path, &slurped.meta, &after).await?;
let mut out = name;
out.push("\n");
out
}
(Action::Commit, LineIn::Piecewise(_, ranges)) => {
let patches = patches(opts.unified, &before, &after);
let after = apply_patches(patches, &ranges, &before);
spit(&path, &slurped.meta, &after).await?;
let mut out = name;
out.push("\n");
out
}
(Action::FzfPreview(_, _), _) => {
let ranges = pure_diffs(opts.unified, &before, &after);
let mut fzf_lines = OsString::new();
for range in ranges {
let repr = Colour::Red.paint(format!("{range}"));
fzf_lines.push(&name);
let line = format!("\n\n\n\n{repr}\0");
fzf_lines.push(&line);
}
fzf_lines
}
};
Ok(print)
}
}
|
