OXYGENHUB
◆ bare-hashes oxygen / src / cli / workspace.rs
94.8 KiB · Rust · last changed Switch and checkout name the files they take off disk 24 days ago source blame history raw
fce44ae9 Andy McCall ↶ 1 
//! Commands that act on the local repository and working copy.
2
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use super::format::{
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    author_name, deps_line, deps_of, plural, short_id, signature_line, signature_mark_of,
5 
    subject_of, via, when,
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};
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use super::json;
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use super::open;
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use super::ui;
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use anyhow::Result;
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use oxy_core::objects::ChangeKind;
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use oxy_core::repo::SignatureStatus;
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use oxy_core::repo::{render_change, ChangeStatus, Repo};
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use std::io::Write;
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use std::path::PathBuf;
16
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pub fn init(path: Option<PathBuf>, bare: bool, store: Option<&str>) -> Result<i32> {
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    let path = path.unwrap_or(std::env::current_dir()?);
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    let repo = Repo::init_new(&path, bare, store)?;
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    println!(
21 
        "{} {}oxy repository in {}",
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        ui::done("Initialized"),
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        if bare { "bare " } else { "" },
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        ui::path(repo.root().display())
25 
    );
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    println!(
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        "{}",
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        ui::kv("bookmark", ui::bookmark(&repo.config.bookmark))
29 
    );
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    if let Some(url) = &repo.config.storage_url {
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        println!(
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            "{}",
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            ui::kv(
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                "store",
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                format!(
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                    "{url} (cache in {}, up to {} MiB)",
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                    ui::path(repo.root().join(".oxy/cache").display()),
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                    repo.config.storage_cache >> 20
39 
                )
40 
            )
41 
        );
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    }
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    println!(
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        "{}",
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        ui::kv(
46 
            "author",
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            format!(
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                "{} <{}>",
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                ui::author(&repo.config.author_name),
50 
                repo.config.author_email
51 
            )
52 
        )
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    );
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    Ok(0)
55 
}
56
57 
fn status_tag(s: ChangeStatus) -> &'static str {
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    match s {
59 
        ChangeStatus::Added => "A",
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        ChangeStatus::Modified => "M",
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        ChangeStatus::Removed => "D",
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        ChangeStatus::Renamed => "R",
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        ChangeStatus::ModeChanged => "X",
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        ChangeStatus::ConflictEdited => "C!",
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        ChangeStatus::Resolved => "V",
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    }
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}
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/// New untracked files left out of the snapshot for their size (oxygen#98):
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/// named, with how to keep them out quietly or take them in.
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fn print_skipped_large(repo: &Repo) {
72 
    let skipped = repo.skipped_large();
73 
    if skipped.is_empty() {
74 
        return;
75 
    }
76 
    let size = |n: u64| {
77 
        if n >= 1 << 30 {
78 
            format!("{:.1} GiB", n as f64 / (1u64 << 30) as f64)
79 
        } else {
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            format!("{:.0} MiB", n as f64 / (1u64 << 20) as f64)
81 
        }
82 
    };
83 
    println!();
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    println!(
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        "{} {}",
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        ui::section(ui::warn("Not tracked")),
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        ui::dim(format!("new files over {}", size(repo.config.max_new_file)))
88 
    );
89 
    for (p, n) in &skipped {
90 
        println!("  {} {}  {}", ui::caution(), ui::path(p), ui::dim(size(*n)));
91 
    }
92 
    println!(
93 
        "  {} {}",
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        ui::note(),
95 
        ui::dim(
96 
            "to leave them out quietly, list them in .oxyignore; to track one, \
97 
             raise snapshot.max-new-file-size (oxy config snapshot.max-new-file-size 2G)"
98 
        )
99 
    );
100 
}
101
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/// Name what a checkout removed from the working copy (oxygen#102): a
103 
/// switch to a bookmark lacking files takes them off disk, which an
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/// editor open on the tree notices before a person reading a count does.
105 
fn print_removed(r: &oxy_core::repo::CheckoutReport) {
106 
    if r.removed == 0 {
107 
        return;
108 
    }
109 
    let more = r.removed.saturating_sub(r.removed_paths.len());
110 
    let names = r.removed_paths.join(", ");
111 
    let tail = if more > 0 {
112 
        format!(" and {more} more")
113 
    } else {
114 
        String::new()
115 
    };
116 
    let lead = if r.removed >= 20 {
117 
        ui::caution()
118 
    } else {
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        ui::note()
120 
    };
121 
    println!(
122 
        "  {} {}",
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        lead,
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        ui::dim(format!(
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            "removed from disk (the bookmark does not have them): {names}{tail}"
126 
        ))
127 
    );
128 
}
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/// Folders holding a repository of their own, which oxy leaves out (oxygen#43):
131 
/// named, with how to track them.
132 
fn print_untracked_nested(repo: &Repo, nested: &[String]) {
133 
    if nested.is_empty() {
134 
        return;
135 
    }
136 
    println!();
137 
    println!(
138 
        "{} {}",
139 
        ui::section(ui::warn("Not tracked")),
140 
        ui::dim("folders holding a repository of their own")
141 
    );
142 
    for p in nested {
143 
        let kind = if repo.root().join(p).join(".git").exists() {
144 
            "Git"
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        } else {
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            "Oxygen"
147 
        };
148 
        println!(
149 
            "  {} {}  {}",
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            ui::caution(),
151 
            ui::path(format!("{p}/")),
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            ui::dim(format!("a nested {kind} repository"))
153 
        );
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    }
155 
    println!(
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        "  {} {}",
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        ui::note(),
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        ui::dim(
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            "to track one's files, remove its .git (or .oxy); to keep it a repository of its own, \
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             oxy submodule add URL PATH; to leave it out quietly, list it in .oxyignore"
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        )
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    );
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}
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/// The working copy's changed paths, or that it is clean.
166 
fn print_statuses(statuses: &[oxy_core::repo::PathStatus]) {
167 
    if statuses.is_empty() {
168 
        println!(
169 
            "  {} {}",
170 
            ui::ok(ui::glyph("✔", "*")),
171 
            ui::dim("nothing to commit, working copy clean")
172 
        );
173 
        return;
174 
    }
175 
    println!();
176 
    for s in statuses {
177 
        println!(
178 
            "  {} {}",
179 
            ui::status_mark(status_tag(s.status)),
180 
            ui::path(&s.path)
181 
        );
182 
    }
183 
}
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/// Say when the working copy has fallen behind its own bookmark: a
186 
/// "clean" status there hid a pull that left it on old code (oxygen#89).
187 
fn print_behind(repo: &Repo) {
188 
    if let Ok(Some(n)) = repo.working_copy_behind() {
189 
        println!(
190 
            "  {} {}",
191 
            ui::caution(),
192 
            ui::warn(format!(
193 
                "the working copy is behind {}: it lacks {} the bookmark has; oxy checkout brings it up",
194 
                repo.config.bookmark,
195 
                plural(n, "change")
196 
            ))
197 
        );
198 
    }
199 
}
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pub fn status(json: bool) -> Result<i32> {
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    let repo = open()?;
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    // Answered by the manifest alone, with no history to load (oxygen#35,
204 
    // #41): a clean working copy, or one as the last snapshot left it.
205 
    let known = if json {
206 
        None
207 
    } else {
208 
        repo.status_by_manifest()?
209 
    };
210 
    if let Some(statuses) = known {
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        let (_, wc) = repo.working_copy()?;
212 
        let heads = repo.bookmark_heads()?;
213 
        println!(
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            "{} {}{}working copy {}{}{}",
215 
            ui::dim("On"),
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            ui::bookmark(&repo.config.bookmark),
217 
            ui::sep(),
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            ui::id(wc.change_id.short(8)),
219 
            ui::sep(),
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            ui::dim(plural(heads.len(), "head"))
221 
        );
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        print_behind(&repo);
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        print_statuses(&statuses);
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        print_untracked_nested(&repo, &repo.untracked_nested());
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        print_skipped_large(&repo);
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        return Ok(0);
227 
    }
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    let sp = ui::spinner("Snapshotting the working copy…");
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    let snap = repo.snapshot_status("oxy status")?;
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    let heads = {
231 
        let _t = oxy_core::timing::phase("status: heads");
232 
        repo.bookmark_heads()?
233 
    };
234 
    let _drop = oxy_core::timing::phase("status: print and drop");
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    sp.clear();
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    if json {
237 
        println!("{}", repo.status_json(&snap)?);
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        return Ok(if snap.base_snapshot.is_conflicted() {
239 
            2
240 
        } else {
241 
            0
242 
        });
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    }
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    println!(
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        "{} {}{}working copy {}{}{}",
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        ui::dim("On"),
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        ui::bookmark(&repo.config.bookmark),
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        ui::sep(),
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        ui::id(snap.wc.change_id.short(8)),
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        ui::sep(),
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        ui::dim(plural(heads.len(), "head"))
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    );
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    print_behind(&repo);
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    print_statuses(&snap.statuses);
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    print_untracked_nested(&repo, &snap.untracked_nested);
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    print_skipped_large(&repo);
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    if !snap.base_snapshot.is_conflicted() {
258 
        return Ok(0);
259 
    }
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    println!();
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    println!(
262 
        "{} {}",
263 
        ui::section(ui::err("Conflicts")),
264 
        ui::dim("edit the marked files, or the .oxy-conflict-N candidates, then commit")
265 
    );
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    for c in &snap.base_snapshot.tree.conflicts {
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        println!("  {} tree: {c:?}", ui::err(ui::glyph("✱", "!")));
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    }
269 
    for (p, f) in &snap.base_snapshot.files {
270 
        if f.is_conflicted() {
75167672 Andy McCall 271 
            let state = match snap
272 
                .statuses
273 
                .iter()
274 
                .find(|s| s.path == *p)
275 
                .map(|s| s.status)
276 
            {
277 
                Some(ChangeStatus::Resolved) => {
278 
                    ui::ok(format!("{} resolved in working copy", ui::glyph("✔", "*")))
279 
                }
280 
                Some(ChangeStatus::ConflictEdited) => {
281 
                    ui::warn(format!("{} markers remain", ui::glyph("‼", "!")))
282 
                }
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                _ => ui::err(format!("{} unresolved", ui::glyph("✱", "!"))),
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            };
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            println!("  {}  {state}", ui::path(p));
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        }
287 
    }
288 
    Ok(2)
289 
}
290
75167672 Andy McCall 291 
pub fn commit(
292 
    message: &str,
293 
    depends_on: &[String],
294 
    paths: &[String],
295 
    interactive: bool,
296 
    hunks: &[usize],
297 
) -> Result<i32> {
fce44ae9 Andy McCall ↶ 298 
    let repo = open()?;
299 
    let mut deps = Vec::new();
300 
    for d in depends_on {
301 
        deps.push(repo.resolve_change(d)?);
302 
    }
c6aa5bd9 Andy McCall ↶ 303 
    let selection = if !hunks.is_empty() {
304 
        oxy_core::repo::Selection::Hunks(hunks.to_vec())
305 
    } else if interactive {
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        let (_, hunks) = repo.hunks()?;
307 
        if hunks.is_empty() {
308 
            anyhow::bail!("nothing to commit: the working copy matches its base");
309 
        }
75167672 Andy McCall 310 
        let hunks: Vec<_> = hunks
311 
            .into_iter()
312 
            .filter(|h| {
313 
                paths.is_empty()
314 
                    || paths.iter().any(|p| {
315 
                        h.path == *p || h.path.starts_with(&format!("{}/", p.trim_end_matches('/')))
316 
                    })
317 
            })
318 
            .collect();
957fee30 Andy McCall ↶ 319 
        let mut chosen = Vec::new();
320 
        let stdin = std::io::stdin();
321 
        let mut take_rest = false;
322 
        for (n, h) in hunks.iter().enumerate() {
323 
            if take_rest {
324 
                chosen.push(h.index);
325 
                continue;
326 
            }
75167672 Andy McCall 327 
            println!(
328 
                "{} {} {}",
329 
                ui::section(format!("hunk {} of {}", n + 1, hunks.len())),
330 
                ui::path(&h.path),
331 
                ui::dim(format!("(#{})", h.index))
332 
            );
957fee30 Andy McCall ↶ 333 
            for line in h.text.lines() {
75167672 Andy McCall 334 
                let styled = if line.starts_with('+') {
335 
                    ui::ok(line)
336 
                } else if line.starts_with('-') {
337 
                    ui::err(line)
338 
                } else {
339 
                    ui::dim(line)
340 
                };
957fee30 Andy McCall ↶ 341 
                println!("  {styled}");
342 
            }
343 
            loop {
75167672 Andy McCall 344 
                print!(
345 
                    "{} ",
346 
                    ui::warn("Commit this hunk? [y]es [n]o [a]ll remaining [q]uit:")
347 
                );
957fee30 Andy McCall ↶ 348 
                use std::io::Write as _;
349 
                std::io::stdout().flush()?;
350 
                let mut answer = String::new();
351 
                if stdin.read_line(&mut answer)? == 0 {
352 
                    anyhow::bail!("aborted");
353 
                }
354 
                match answer.trim() {
355 
                    "y" | "Y" => {
356 
                        chosen.push(h.index);
357 
                        break;
358 
                    }
359 
                    "n" | "N" | "" => break,
360 
                    "a" | "A" => {
361 
                        chosen.push(h.index);
362 
                        take_rest = true;
363 
                        break;
364 
                    }
365 
                    "q" | "Q" => anyhow::bail!("aborted; nothing committed"),
366 
                    _ => continue,
367 
                }
368 
            }
369 
        }
370 
        if chosen.is_empty() {
371 
            anyhow::bail!("no hunks chosen; nothing committed");
372 
        }
373 
        oxy_core::repo::Selection::Hunks(chosen)
374 
    } else if paths.is_empty() {
375 
        oxy_core::repo::Selection::All
376 
    } else {
377 
        oxy_core::repo::Selection::Paths(paths.to_vec())
378 
    };
135212de Andy McCall ↶ 379 
    let sp = ui::spinner("Committing…");
75051941 Andy McCall ↶ 380 
    let (h, partial) = repo.commit_selection_partial(message, &deps, &selection)?;
5b4c5130 Andy McCall ↶ 381 
    // The metadata only: a first commit's change holds the whole tree.
382 
    let meta = repo.store().get_change_meta(&h)?;
75167672 Andy McCall 383 
    sp.done(&format!(
384 
        "{} {} {}  {}",
385 
        ui::done("Committed"),
5b4c5130 Andy McCall ↶ 386 
        ui::id(meta.change_id.short(8)),
75167672 Andy McCall 387 
        ui::hash(format!("#{}", h.short(12))),
388 
        ui::subject(subject_of(message))
389 
    ));
d4dbab97 Andy McCall ↶ 390 
    print_untracked_nested(&repo, &repo.untracked_nested());
b689779e Andy McCall ↶ 391 
    print_skipped_large(&repo);
75051941 Andy McCall ↶ 392 
    // Only a commit that took part of the working copy leaves anything.
393 
    if partial {
8ab265dc Andy McCall ↶ 394 
        let rest = repo.snapshot_status("oxy commit")?;
957fee30 Andy McCall ↶ 395 
        if !rest.statuses.is_empty() {
75167672 Andy McCall 396 
            println!(
397 
                "  {} {}",
398 
                ui::note(),
399 
                ui::dim(format!(
400 
                    "{} left uncommitted",
401 
                    plural(rest.statuses.len(), "path")
402 
                ))
403 
            );
957fee30 Andy McCall ↶ 404 
        }
405 
    }
98a1620a Andy McCall ↶ 406 
    where_now(&repo);
957fee30 Andy McCall ↶ 407 
    Ok(0)
408 
}
409
410 
pub fn blame(path: &str, json: bool) -> Result<i32> {
411 
    let repo = open()?;
412 
    let lines = repo.blame(path)?;
413 
    if json {
414 
        let items = lines.iter().map(|l| {
415 
            format!(
416 
                "{{\"line\":{},\"change_id\":{},\"hash\":{},\"index\":{},\"author\":{},\"when_ms\":{}}}",
417 
                l.line,
418 
                oxy_core::repo::json_str(&l.change_id.to_hex()),
419 
                oxy_core::repo::json_str(&l.hash.to_hex()),
420 
                l.index,
421 
                oxy_core::repo::json_str(&l.author),
422 
                l.when_ms
423 
            )
424 
        });
425 
        println!("{}", oxy_core::repo::json_array(items));
426 
        return Ok(0);
427 
    }
75167672 Andy McCall 428 
    let width = lines
429 
        .iter()
430 
        .map(|l| l.author.chars().count())
431 
        .max()
432 
        .unwrap_or(0)
433 
        .min(20);
957fee30 Andy McCall ↶ 434 
    let digits = lines.len().to_string().len();
fddf64ba Andy McCall ↶ 435 
    let _t = oxy_core::timing::phase("blame: print");
436 
    // Most lines share their change with many others: each change's id,
437 
    // author and age are formatted once, and the lines go out through one
438 
    // buffered lock on stdout.
439 
    let mut prefix: std::collections::HashMap<oxy_core::hash::ChangeHash, String> =
440 
        std::collections::HashMap::new();
441 
    let bar = ui::dim(ui::glyph("│", "|"));
442 
    let mut out = std::io::BufWriter::with_capacity(1 << 16, std::io::stdout().lock());
957fee30 Andy McCall ↶ 443 
    for l in &lines {
fddf64ba Andy McCall ↶ 444 
        let p = prefix.entry(l.hash).or_insert_with(|| {
445 
            let author: String = l.author.chars().take(20).collect();
446 
            format!(
447 
                "{} {} {}",
448 
                ui::id(l.change_id.short(8)),
449 
                ui::author(format!("{author:<width$}")),
450 
                ui::dim(ui::ago(l.when_ms))
451 
            )
452 
        });
957fee30 Andy McCall ↶ 453 
        let text = String::from_utf8_lossy(&l.text);
fddf64ba Andy McCall ↶ 454 
        if writeln!(
455 
            out,
456 
            "{p} {:>digits$}{bar} {}",
957fee30 Andy McCall ↶ 457 
            l.line,
458 
            text.trim_end_matches('\n')
fddf64ba Andy McCall ↶ 459 
        )
460 
        .is_err()
461 
        {
462 
            // A closed pipe (blame | head): stop quietly.
463 
            return Ok(0);
464 
        }
957fee30 Andy McCall ↶ 465 
    }
fddf64ba Andy McCall ↶ 466 
    let _ = out.flush();
957fee30 Andy McCall ↶ 467 
    Ok(0)
468 
}
469
470 
fn bisect_report(repo: &Repo, step: &oxy_core::repo::BisectStep) -> Result<i32> {
471 
    use oxy_core::repo::BisectStep::*;
472 
    match step {
473 
        NeedMarks { good, bad } => {
75167672 Andy McCall 474 
            println!(
475 
                "{} {} {}",
476 
                ui::note(),
477 
                ui::dim(format!("{good} good, {bad} bad;")),
478 
                ui::dim(if *good == 0 {
479 
                    "mark a known-good change or bookmark: oxy bisect good CHANGE"
480 
                } else {
481 
                    "mark a known-bad change or bookmark: oxy bisect bad CHANGE"
482 
                })
483 
            );
957fee30 Andy McCall ↶ 484 
            Ok(0)
485 
        }
75167672 Andy McCall 486 
        Testing {
487 
            heads,
488 
            remaining,
489 
            steps_left,
490 
        } => {
491 
            println!(
492 
                "{} {} {}",
493 
                ui::done("Testing"),
494 
                ui::dim(format!(
495 
                    "{} in the state under test;",
496 
                    plural(heads.len(), "head")
497 
                )),
498 
                ui::dim(format!(
499 
                    "{remaining} candidates left, about {steps_left} more steps"
500 
                ))
501 
            );
502 
            println!(
503 
                "  {} {}",
504 
                ui::note(),
505 
                ui::dim("run your test, then oxy bisect good | bad | skip")
506 
            );
957fee30 Andy McCall ↶ 507 
            Ok(0)
508 
        }
509 
        Found { culprit } => {
510 
            let c = repo.store().get_change(culprit)?;
75167672 Andy McCall 511 
            println!(
512 
                "{} {} {}  {}",
513 
                ui::done("Found"),
514 
                ui::id(short_id(&c)),
515 
                ui::hash(format!("#{}", culprit.short(12))),
516 
                ui::subject(subject_of(&c.message))
517 
            );
957fee30 Andy McCall ↶ 518 
            println!("  {} {}", ui::note(), ui::dim("the first change whose inclusion makes the state bad; oxy bisect reset to return"));
519 
            Ok(0)
520 
        }
521 
        Inconclusive { candidates } => {
75167672 Andy McCall 522 
            println!(
523 
                "{} {}",
524 
                ui::caution(),
525 
                ui::warn(format!(
526 
                    "every remaining candidate was skipped ({}); oxy bisect reset to return",
527 
                    plural(candidates.len(), "change")
528 
                ))
529 
            );
957fee30 Andy McCall ↶ 530 
            Ok(1)
531 
        }
532 
    }
533 
}
534
535 
pub fn bisect_start() -> Result<i32> {
536 
    let repo = open()?;
537 
    repo.bisect_start()?;
75167672 Andy McCall 538 
    println!(
539 
        "{} bisect; {}",
540 
        ui::done("Started"),
541 
        ui::dim("now: oxy bisect good CHANGE and oxy bisect bad CHANGE")
542 
    );
957fee30 Andy McCall ↶ 543 
    Ok(0)
544 
}
545
546 
pub fn bisect_mark(good: Option<bool>, changes: &[String]) -> Result<i32> {
547 
    let repo = open()?;
548 
    let mut heads = Vec::new();
549 
    for c in changes {
550 
        heads.extend(repo.resolve_heads(c)?);
551 
    }
552 
    let step = repo.bisect_mark(good, &heads)?;
553 
    bisect_report(&repo, &step)
554 
}
555
556 
pub fn bisect_run(command: &[String]) -> Result<i32> {
557 
    let repo = open()?;
558 
    let step = repo.bisect_run(command)?;
559 
    bisect_report(&repo, &step)
560 
}
561
c6aa5bd9 Andy McCall ↶ 562 
pub fn bisect_status(as_json: bool) -> Result<i32> {
957fee30 Andy McCall ↶ 563 
    let repo = open()?;
c6aa5bd9 Andy McCall ↶ 564 
    if as_json {
565 
        use oxy_core::repo::BisectStep::*;
566 
        let v = match repo.bisect_status()? {
567 
            None => "null".to_string(),
75167672 Andy McCall 568 
            Some(NeedMarks { good, bad }) => json::obj([
569 
                ("state", json::s("need-marks")),
570 
                ("good", json::n(good)),
571 
                ("bad", json::n(bad)),
572 
            ]),
573 
            Some(Testing {
574 
                heads,
575 
                remaining,
576 
                steps_left,
577 
            }) => json::obj([
578 
                ("state", json::s("testing")),
579 
                ("heads", json::hashes(&heads)),
580 
                ("remaining", json::n(remaining)),
581 
                ("steps_left", json::n(steps_left)),
582 
            ]),
583 
            Some(Found { culprit }) => json::obj([
584 
                ("state", json::s("found")),
585 
                ("culprit", json::s(&culprit.to_hex())),
586 
            ]),
587 
            Some(Inconclusive { candidates }) => json::obj([
588 
                ("state", json::s("inconclusive")),
589 
                ("candidates", json::hashes(&candidates)),
590 
            ]),
c6aa5bd9 Andy McCall ↶ 591 
        };
592 
        println!("{v}");
593 
        return Ok(0);
594 
    }
957fee30 Andy McCall ↶ 595 
    match repo.bisect_status()? {
596 
        None => {
597 
            println!("{}", ui::dim("No bisect in progress."));
598 
            Ok(0)
599 
        }
600 
        Some(step) => bisect_report(&repo, &step),
601 
    }
602 
}
603
604 
pub fn bisect_reset() -> Result<i32> {
605 
    let repo = open()?;
606 
    repo.bisect_reset()?;
607 
    println!("{} bisect; working copy restored", ui::done("Reset"));
fce44ae9 Andy McCall ↶ 608 
    Ok(0)
609 
}
610
94084087 Andy McCall ↶ 611 
/// The log: one entry per change, newest first, joined by a rail. The
612 
/// default view is the subject and a metadata line; `verbose` adds the full
613 
/// message, dependencies, and the authenticating key.
c6aa5bd9 Andy McCall ↶ 614 
fn signature_json(repo: &Repo, h: &oxy_core::hash::ChangeHash) -> Result<String> {
615 
    Ok(match repo.authenticate_change(h)? {
616 
        SignatureStatus::Unsigned => json::obj([("status", json::s("unsigned"))]),
75167672 Andy McCall 617 
        SignatureStatus::Valid {
618 
            key,
619 
            name,
620 
            email,
621 
            sealed,
622 
            revoked,
623 
        } => json::obj([
c6aa5bd9 Andy McCall ↶ 624 
            ("status", json::s(if sealed { "sealed" } else { "signed" })),
625 
            ("key", json::s(&key.to_hex())),
626 
            ("name", json::s(&name)),
627 
            ("email", json::s(&email)),
628 
            ("revoked", json::b(revoked)),
629 
        ]),
75167672 Andy McCall 630 
        SignatureStatus::Invalid(why) => {
631 
            json::obj([("status", json::s("invalid")), ("reason", json::s(&why))])
632 
        }
c6aa5bd9 Andy McCall ↶ 633 
    })
634 
}
635
636 
fn log_entry_json(repo: &Repo, e: &oxy_core::repo::LogEntry) -> Result<String> {
637 
    let c = &e.change;
638 
    Ok(json::obj([
639 
        ("hash", json::s(&e.hash.to_hex())),
640 
        ("change_id", json::s(&c.change_id.to_hex())),
641 
        ("author", json::s(&author_name(repo, c))),
642 
        ("author_key", json::s(&c.author.to_hex())),
5cde7882 Andy McCall ↶ 643 
        (
644 
            "via",
645 
            match via(
646 
                repo,
647 
                &repo.authenticate_change_known(&e.hash, Some(c))?,
648 
                &c.author,
649 
            ) {
650 
                Some(v) => json::obj([
651 
                    ("name", json::s(&v.name)),
652 
                    ("email", json::s(&v.email)),
653 
                    ("key", json::s(&v.key.to_hex())),
654 
                    ("scope", json::opt(v.scope.as_deref(), json::s)),
655 
                    ("expires_ms", json::opt(v.expires, json::n)),
656 
                    ("revoked", json::b(v.revoked)),
657 
                ]),
658 
                None => "null".to_string(),
659 
            },
660 
        ),
c6aa5bd9 Andy McCall ↶ 661 
        ("when_ms", json::n(c.hlc.wall_ms)),
662 
        ("message", json::s(&c.message)),
663 
        ("kind", json::s(&format!("{:?}", c.kind).to_lowercase())),
664 
        ("deps", json::hashes(&c.deps)),
665 
        ("head", json::b(e.is_head)),
666 
        ("working_copy", json::b(e.is_working_copy)),
75167672 Andy McCall 667 
        (
668 
            "signature",
669 
            if e.is_working_copy {
670 
                "null".into()
671 
            } else {
672 
                signature_json(repo, &e.hash)?
673 
            },
674 
        ),
c6aa5bd9 Andy McCall ↶ 675 
    ]))
676 
}
677
83d61e80 Andy McCall ↶ 678 
/// `START,END:PATH` for `oxy log -L`.
679 
fn parse_line_range(spec: &str) -> Result<(usize, usize, &str)> {
680 
    let bad = || anyhow::anyhow!("-L {spec}: expected START,END:PATH, as 10,24:src/lib.rs");
681 
    let (range, path) = spec.split_once(':').ok_or_else(bad)?;
682 
    let (a, b) = range.split_once(',').ok_or_else(bad)?;
683 
    Ok((
684 
        a.trim().parse().map_err(|_| bad())?,
685 
        b.trim().parse().map_err(|_| bad())?,
686 
        path,
687 
    ))
688 
}
689
690 
pub fn log(
47ce8b8e Andy McCall ↶ 691 
    revset: Option<&str>,
83d61e80 Andy McCall ↶ 692 
    limit: Option<usize>,
693 
    verbose: bool,
694 
    path: Option<&str>,
695 
    lines: Option<&str>,
696 
    as_json: bool,
697 
) -> Result<i32> {
fce44ae9 Andy McCall ↶ 698 
    let repo = open()?;
69816d68 Andy McCall ↶ 699 
    // Whether the working copy is clean and conflicted: from the manifest
700 
    // when it proves the working copy clean, else from a snapshot.
33472ccc Andy McCall ↶ 701 
    // The working copy as last recorded, without looking at the files (as
702 
    // Git's log does not): whether its change holds edits, and whether its
703 
    // base was conflicted. `oxy status` is what checks the disk.
704 
    let conflicted = !repo.is_at_op() && repo.recorded_conflicted()?;
4cce912a Andy McCall ↶ 705 
    let listing = oxy_core::timing::phase("log: entries");
83d61e80 Andy McCall ↶ 706 
    let entries = match (path, lines) {
47ce8b8e Andy McCall ↶ 707 
        _ if revset.is_some() => repo.log_revset(revset.unwrap_or_default())?,
83d61e80 Andy McCall ↶ 708 
        (_, Some(spec)) => {
709 
            let (first, last, p) = parse_line_range(spec)?;
69816d68 Andy McCall ↶ 710 
            let (_, wc) = repo.working_copy()?;
711 
            let base = repo.load_state_history(&wc.deps)?.maximal(&wc.deps);
712 
            repo.line_history(&base, p, first, last)?
83d61e80 Andy McCall ↶ 713 
        }
714 
        (Some(p), None) => repo.log_for_path(p)?,
715 
        (None, None) => repo.log()?,
c6aa5bd9 Andy McCall ↶ 716 
    };
4cce912a Andy McCall ↶ 717 
    drop(listing);
718 
    let _print = oxy_core::timing::phase("log: print");
c6aa5bd9 Andy McCall ↶ 719 
    if as_json {
720 
        let shown = limit.unwrap_or(entries.len()).min(entries.len());
721 
        let mut items = Vec::new();
722 
        for e in entries.iter().take(shown) {
723 
            items.push(log_entry_json(&repo, e)?);
724 
        }
75167672 Andy McCall 725 
        println!(
726 
            "{}",
727 
            json::obj([
728 
                ("bookmark", json::s(&repo.config.bookmark)),
729 
                ("total", json::n(entries.len())),
730 
                ("changes", json::arr(items))
731 
            ])
732 
        );
c6aa5bd9 Andy McCall ↶ 733 
        return Ok(0);
734 
    }
94084087 Andy McCall ↶ 735 
    let total = entries.len();
736 
    let shown = limit.unwrap_or(total).min(total);
2bf22305 Andy McCall ↶ 737 
    // Lay out a little past what is shown, so edges into the cut are drawn.
738 
    let window: Vec<(ChangeHash, Vec<ChangeHash>)> = entries
739 
        .iter()
740 
        .take((shown + MAX_EDGE).min(total))
741 
        .map(|e| (e.hash, e.change.deps.clone()))
742 
        .collect();
743 
    let rows = oxy_core::lanes::graph(&window, MAX_EDGE);
744 
    // Highlight the shortest prefix that names each change: against the
745 
    // whole log, which is what `resolve_change` searches.
746 
    let everything;
47ce8b8e Andy McCall ↶ 747 
    let all = if path.is_some() || lines.is_some() || revset.is_some() {
2bf22305 Andy McCall ↶ 748 
        everything = repo.log()?;
749 
        &everything
750 
    } else {
751 
        &entries
752 
    };
79b5a90f Andy McCall ↶ 753 
    let prefixes = oxy_core::timing::phase("log: id prefixes");
754 
    let id_prefix = id_prefixes(
755 
        all.iter().map(|e| e.change.change_id.0).collect(),
756 
        entries.iter().take(shown).map(|e| e.change.change_id.0),
757 
    );
758 
    drop(prefixes);
2bf22305 Andy McCall ↶ 759 
    let labels = reference_labels(&repo)?;
760 
    for (e, row) in entries.iter().take(shown).zip(&rows) {
fce44ae9 Andy McCall ↶ 761 
        let c = &e.change;
75167672 Andy McCall 762 
        let bullet = ui::log_bullet(
763 
            e.is_working_copy,
764 
            e.is_head,
765 
            e.is_working_copy && conflicted,
766 
        );
2bf22305 Andy McCall ↶ 767 
        let id = c.change_id.to_hex();
79b5a90f Andy McCall ↶ 768 
        let n = id_prefix.get(&c.change_id.0).copied().unwrap_or(8).min(8);
2bf22305 Andy McCall ↶ 769 
        let mut head = vec![format!("{}{}", ui::id(&id[..n]), ui::dim(&id[n..8]))];
770 
        head.push(ui::author(author_name(&repo, c)));
771 
        head.push(ui::dim(ui::ago(c.hlc.wall_ms)));
772 
        if let Some(names) = labels.get(&e.hash) {
773 
            head.push(names.join(" "));
fce44ae9 Andy McCall ↶ 774 
        }
94084087 Andy McCall ↶ 775 
        if c.kind == ChangeKind::Resolution {
2bf22305 Andy McCall ↶ 776 
            head.push(ui::warn("resolution"));
fce44ae9 Andy McCall ↶ 777 
        }
2bf22305 Andy McCall ↶ 778 
        if !e.is_working_copy {
779 
            head.push(ui::hash(format!("#{}", e.hash.short(8))));
5cde7882 Andy McCall ↶ 780 
            let status = repo.authenticate_change_known(&e.hash, Some(c))?;
781 
            if let Some(agent) = via(&repo, &status, &c.author) {
782 
                head.push(ui::dim(format!("via {}", agent.name)));
783 
            }
784 
            head.push(signature_mark_of(&status));
2bf22305 Andy McCall ↶ 785 
        }
786 
        println!("{}{}", node_line(row, &bullet), head.join(" "));
94084087 Andy McCall ↶ 787 
        let subject = if e.is_working_copy && c.message.is_empty() {
33472ccc Andy McCall ↶ 788 
            let edited = repo
789 
                .store()
790 
                .get_change(&e.hash)
791 
                .is_ok_and(|w| !w.tree_ops.is_empty() || !w.edits.is_empty());
792 
            ui::dim(if edited {
2bf22305 Andy McCall ↶ 793 
                "(working copy, uncommitted changes)"
33472ccc Andy McCall ↶ 794 
            } else {
795 
                "(working copy)"
75167672 Andy McCall 796 
            })
2bf22305 Andy McCall ↶ 797 
        } else if c.message.trim().is_empty() {
798 
            ui::dim("(no description)")
94084087 Andy McCall ↶ 799 
        } else {
2bf22305 Andy McCall ↶ 800 
            subject_of(&c.message).to_string()
94084087 Andy McCall ↶ 801 
        };
2bf22305 Andy McCall ↶ 802 
        println!("{}{subject}", below_line(row));
94084087 Andy McCall ↶ 803 
        if verbose {
2bf22305 Andy McCall ↶ 804 
            let rail = continuation(row);
94084087 Andy McCall ↶ 805 
            if !e.is_working_copy {
75167672 Andy McCall 806 
                println!(
2bf22305 Andy McCall ↶ 807 
                    "{rail}{}",
75167672 Andy McCall 808 
                    ui::dim(format!(
809 
                        "{} {}",
810 
                        when(c.hlc.wall_ms),
811 
                        signature_line(&repo, &e.hash)?
812 
                    ))
813 
                );
94084087 Andy McCall ↶ 814 
            }
815 
            if !c.deps.is_empty() {
75167672 Andy McCall 816 
                println!(
2bf22305 Andy McCall ↶ 817 
                    "{rail}{} {}",
75167672 Andy McCall 818 
                    ui::dim(ui::glyph("↳", "->")),
819 
                    ui::dim(deps_of(&c.deps))
820 
                );
94084087 Andy McCall ↶ 821 
            }
75167672 Andy McCall 822 
            let body: Vec<&str> = c
823 
                .message
824 
                .lines()
825 
                .skip(1)
826 
                .skip_while(|l| l.trim().is_empty())
827 
                .collect();
2bf22305 Andy McCall ↶ 828 
            for line in body {
829 
                println!("{rail}  {line}");
94084087 Andy McCall ↶ 830 
            }
fce44ae9 Andy McCall ↶ 831 
        }
832 
    }
94084087 Andy McCall ↶ 833 
    if shown < total {
2bf22305 Andy McCall ↶ 834 
        if let Some(last) = rows.get(shown.saturating_sub(1)) {
835 
            let cut: String = last
836 
                .below
837 
                .iter()
838 
                .map(|c| match c {
839 
                    Cell::Blank | Cell::Elided | Cell::JoinRight => "  ",
840 
                    _ => "~ ",
841 
                })
842 
                .collect();
843 
            if cut.trim().is_empty() {
844 
                println!("{}", ui::dim("~"));
845 
            } else {
846 
                println!("{}", ui::dim(cut.trim_end()));
847 
            }
848 
        }
75167672 Andy McCall 849 
        println!(
850 
            "{}",
851 
            ui::dim(format!(
852 
                "{} {} more; pass -n to see them",
853 
                ui::glyph("…", "..."),
854 
                total - shown
855 
            ))
856 
        );
94084087 Andy McCall ↶ 857 
    }
fce44ae9 Andy McCall ↶ 858 
    Ok(0)
2bf22305 Andy McCall ↶ 859 
}
860
861 
/// Rows a drawn edge may span in `oxy log`; a longer one is elided (`~`).
862 
const MAX_EDGE: usize = 12;
863
864 
use oxy_core::hash::ChangeHash;
865 
use oxy_core::lanes::{Cell, GraphRow};
866
867 
/// A graph cell, two columns wide.
868 
fn cell(c: Cell) -> &'static str {
869 
    match c {
870 
        Cell::Blank => "  ",
871 
        Cell::Line => ui::glyph("│ ", "| "),
872 
        Cell::Elided => "~ ",
873 
        Cell::JoinLeft => ui::glyph("├─", "|-"),
874 
        Cell::JoinPass => ui::glyph("──", "--"),
875 
        Cell::JoinCross => ui::glyph("┼─", "+-"),
876 
        Cell::JoinRight => ui::glyph("╯ ", "' "),
877 
    }
878 
}
879
880 
/// The graph part of a change's own line, its bullet in its column.
881 
fn node_line(row: &GraphRow, bullet: &str) -> String {
882 
    let width = row
883 
        .passing
884 
        .iter()
885 
        .copied()
886 
        .max()
887 
        .unwrap_or(0)
888 
        .max(row.column)
889 
        + 1;
890 
    let mut out = String::new();
891 
    for c in 0..width {
892 
        if c == row.column {
893 
            out.push_str(bullet);
894 
            out.push(' ');
895 
        } else if row.passing.contains(&c) {
896 
            out.push_str(&ui::dim(cell(Cell::Line)));
897 
        } else {
898 
            out.push_str("  ");
899 
        }
900 
    }
901 
    out.push(' ');
902 
    out
903 
}
904
905 
/// The graph part of the line under a change: lanes carrying on, a join,
906 
/// or `~` for an elided edge.
907 
fn below_line(row: &GraphRow) -> String {
908 
    let g: String = row.below.iter().map(|c| cell(*c)).collect();
909 
    format!("{} ", ui::dim(g))
910 
}
911
912 
/// The graph part of any further line of a change (`-v`).
913 
fn continuation(row: &GraphRow) -> String {
914 
    let g: String = row
915 
        .below
916 
        .iter()
917 
        .map(|c| match c {
918 
            Cell::Line | Cell::JoinLeft | Cell::JoinCross => cell(Cell::Line),
919 
            _ => "  ",
920 
        })
921 
        .collect();
922 
    format!("{} ", ui::dim(g))
923 
}
924
925 
/// For each hex ID, the length of its shortest prefix no other ID shares.
79b5a90f Andy McCall ↶ 926 
/// The shortest prefix, in hex digits, that names each of `wanted` among
927 
/// `all`: worked out for the few shown rather than for the whole history.
928 
fn id_prefixes(
929 
    mut all: Vec<[u8; 16]>,
930 
    wanted: impl Iterator<Item = [u8; 16]>,
931 
) -> std::collections::HashMap<[u8; 16], usize> {
932 
    all.sort_unstable();
933 
    all.dedup();
934 
    // Hex digits two ids share at the start.
935 
    let common = |a: &[u8; 16], b: &[u8; 16]| {
936 
        let bytes = a.iter().zip(b).take_while(|(x, y)| x == y).count();
937 
        match (a.get(bytes), b.get(bytes)) {
938 
            (Some(x), Some(y)) if x >> 4 == y >> 4 => 2 * bytes + 1,
939 
            _ => 2 * bytes,
940 
        }
941 
    };
942 
    let mut out = std::collections::HashMap::new();
943 
    for id in wanted {
944 
        let Ok(i) = all.binary_search(&id) else {
945 
            continue;
946 
        };
947 
        let before = i.checked_sub(1).map_or(0, |j| common(&all[j], &id));
948 
        let after = all.get(i + 1).map_or(0, |n| common(&id, n));
949 
        out.insert(id, before.max(after) + 1);
950 
    }
951 
    out
952 
}
953
2bf22305 Andy McCall ↶ 954 
fn unique_prefixes(ids: impl Iterator<Item = String>) -> std::collections::HashMap<String, usize> {
955 
    let mut v: Vec<String> = ids.collect();
956 
    v.sort();
957 
    v.dedup();
958 
    let common = |a: &str, b: &str| a.bytes().zip(b.bytes()).take_while(|(x, y)| x == y).count();
959 
    let mut out = std::collections::HashMap::with_capacity(v.len());
960 
    for i in 0..v.len() {
961 
        let before = if i > 0 { common(&v[i - 1], &v[i]) } else { 0 };
962 
        let after = if i + 1 < v.len() {
963 
            common(&v[i], &v[i + 1])
964 
        } else {
965 
            0
966 
        };
967 
        out.insert(v[i].clone(), before.max(after) + 1);
968 
    }
969 
    out
970 
}
971
972 
/// Bookmark, remote bookmark and tag names to show beside the changes they
973 
/// point at. A name is shown on each head of its state; one with more than
974 
/// three heads names too much of the log to help, so it is left out (oxy
975 
/// bookmark list shows it). A remote bookmark at the same state as the
976 
/// local one of that name is not repeated.
977 
fn reference_labels(repo: &Repo) -> Result<std::collections::HashMap<ChangeHash, Vec<String>>> {
978 
    const MAX_HEADS: usize = 3;
979 
    let view = repo.view()?;
980 
    let mut out: std::collections::HashMap<ChangeHash, Vec<String>> = Default::default();
981 
    let mut add = |heads: Vec<ChangeHash>, label: String| {
982 
        if heads.len() <= MAX_HEADS {
983 
            for h in heads {
984 
                out.entry(h).or_default().push(label.clone());
985 
            }
986 
        }
987 
    };
988 
    for (name, st) in &view.bookmarks {
989 
        add(repo.store().get_state(st)?.heads, ui::bookmark(name));
990 
    }
991 
    for (remote, bookmarks) in &view.remotes {
992 
        for (name, st) in bookmarks {
993 
            if view.bookmarks.get(name) == Some(st) {
994 
                continue;
995 
            }
996 
            add(
997 
                repo.store().get_state(st)?.heads,
998 
                ui::dim(format!("{remote}/{name}")),
999 
            );
1000 
        }
1001 
    }
1002 
    for t in repo.tags()? {
1003 
        add(t.heads.clone(), ui::warn(&t.name));
1004 
    }
1005 
    Ok(out)
fce44ae9 Andy McCall ↶ 1006 
}
1007
c6aa5bd9 Andy McCall ↶ 1008 
pub fn diff(change: Option<&str>, as_json: bool) -> Result<i32> {
1009 
    let repo = open()?;
1010 
    let hash = change.map(|c| repo.resolve_change(c)).transpose()?;
1011 
    if as_json {
1012 
        let files = repo.diff_files(hash.as_ref())?;
1013 
        let items = files.iter().map(|f| {
1014 
            json::obj([
1015 
                ("path", json::s(&f.path)),
1016 
                ("kind", json::s(&f.kind)),
1017 
                ("from", json::opt(f.from.as_deref(), json::s)),
1018 
                (
1019 
                    "hunks",
1020 
                    json::arr(f.hunks.iter().map(|h| {
1021 
                        json::obj([
1022 
                            ("base_line", json::n(h.base_line)),
75167672 Andy McCall 1023 
                            (
1024 
                                "added",
1025 
                                json::arr(
1026 
                                    h.added.iter().map(|l| json::s(&String::from_utf8_lossy(l))),
1027 
                                ),
1028 
                            ),
1029 
                            (
1030 
                                "removed",
1031 
                                json::arr(h.removed.iter().map(|(n, l)| {
1032 
                                    json::obj([
1033 
                                        ("line", json::n(*n)),
1034 
                                        ("text", json::s(&String::from_utf8_lossy(l))),
1035 
                                    ])
1036 
                                })),
1037 
                            ),
c6aa5bd9 Andy McCall ↶ 1038 
                        ])
1039 
                    })),
1040 
                ),
1041 
            ])
1042 
        });
75167672 Andy McCall 1043 
        println!(
1044 
            "{}",
1045 
            json::obj([
1046 
                ("change", json::opt(hash, |h| json::s(&h.to_hex()))),
1047 
                ("files", json::arr(items))
1048 
            ])
1049 
        );
c6aa5bd9 Andy McCall ↶ 1050 
        return Ok(0);
1051 
    }
1052 
    match hash {
1053 
        Some(h) => {
1054 
            let c = repo.store().get_change(&h)?;
8ab265dc Andy McCall ↶ 1055 
            let (base, snapshot) = repo.change_base(&c)?;
c6aa5bd9 Andy McCall ↶ 1056 
            print!("{}", render_change(&c, &base, &snapshot));
1057 
        }
1058 
        None => {
77445673 Andy McCall ↶ 1059 
            let (wc, base, snapshot) = repo.working_copy_with_base()?;
10b4fd43 Andy McCall ↶ 1060 
            let text = {
1061 
                let _t = oxy_core::timing::phase("diff: render the change");
1062 
                render_change(&wc, &base, &snapshot)
1063 
            };
1064 
            print!("{text}");
1065 
            // The process ends here: freeing the base's tree and graphs
1066 
            // one by one would only cost time (about 27 ms on Linux).
1067 
            std::mem::forget((wc, base, snapshot));
c6aa5bd9 Andy McCall ↶ 1068 
        }
1069 
    }
1070 
    Ok(0)
1071 
}
1072
1073 
pub fn cat(path: &str, change: Option<&str>) -> Result<i32> {
1074 
    let repo = open()?;
1075 
    let heads = change.map(|c| repo.resolve_heads(c)).transpose()?;
b0a0c9af Andy McCall ↶ 1076 
    let bytes = match repo.file_at(path, heads.as_deref()) {
1077 
        Ok(b) => b,
1078 
        // -r CHANGE reads that change's dependency closure, not the
1079 
        // bookmark it is on: say so when the bookmark has the file
1080 
        // (oxygen#76).
1081 
        Err(e) => match change {
1082 
            Some(c)
1083 
                if !repo.view()?.bookmarks.contains_key(c)
1084 
                    && repo.tag_heads(c)?.is_none()
1085 
                    && repo.file_at(path, None).is_ok() =>
1086 
            {
1087 
                anyhow::bail!(
1088 
                    "{path} is not in {c}'s dependency closure (the change and what it \
1089 
                     depends on); it is on the bookmark: try -r {}, or --at-op OP for the \
1090 
                     state at an operation",
1091 
                    repo.config.bookmark
1092 
                )
1093 
            }
1094 
            _ => return Err(e.into()),
1095 
        },
1096 
    };
c6aa5bd9 Andy McCall ↶ 1097 
    use std::io::Write as _;
1098 
    std::io::stdout().write_all(&bytes)?;
1099 
    Ok(0)
1100 
}
1101
1102 
pub fn root(as_json: bool) -> Result<i32> {
1103 
    let Ok(repo) = Repo::open(&std::env::current_dir()?) else {
1104 
        if as_json {
1105 
            println!("null");
1106 
        }
1107 
        return Ok(1);
1108 
    };
1109 
    if as_json {
75167672 Andy McCall 1110 
        println!(
1111 
            "{}",
1112 
            json::obj([
1113 
                ("root", json::s(&repo.root().to_string_lossy())),
1114 
                ("workspace", json::s(&repo.workspace().to_hex())),
1115 
                ("bookmark", json::s(&repo.config.bookmark))
1116 
            ])
1117 
        );
c6aa5bd9 Andy McCall ↶ 1118 
    } else {
1119 
        println!("{}", repo.root().display());
1120 
    }
1121 
    Ok(0)
1122 
}
1123
1124 
pub fn version(as_json: bool) -> Result<i32> {
1125 
    if as_json {
75167672 Andy McCall 1126 
        println!(
1127 
            "{}",
1128 
            json::obj([
1129 
                ("version", json::s(env!("CARGO_PKG_VERSION"))),
e293c90d Andy McCall ↶ 1130 
                // What was built: a release's or install's `oxy describe`,
1131 
                // a Flow build's heads, or "local build".
1132 
                ("build", json::s(env!("OXY_BUILD_ID"))),
75167672 Andy McCall 1133 
                ("protocol", json::n(oxy_core::protocol::PROTOCOL_VERSION)),
1134 
                ("format", json::n(2))
1135 
            ])
1136 
        );
c6aa5bd9 Andy McCall ↶ 1137 
    } else {
75167672 Andy McCall 1138 
        println!(
1139 
            "oxy {} (repository format 2, protocol {})",
e293c90d Andy McCall ↶ 1140 
            env!("OXY_VERSION_LONG"),
75167672 Andy McCall 1141 
            oxy_core::protocol::PROTOCOL_VERSION
1142 
        );
c6aa5bd9 Andy McCall ↶ 1143 
    }
1144 
    Ok(0)
1145 
}
1146
1147 
pub fn discard(paths: &[String], hunks: &[usize]) -> Result<i32> {
1148 
    let repo = open()?;
1149 
    if paths.is_empty() && hunks.is_empty() {
1150 
        anyhow::bail!("name paths to restore, or --hunks to undo chosen hunks");
1151 
    }
1152 
    let mut n = 0;
1153 
    if !hunks.is_empty() {
1154 
        n += repo.discard_hunks(hunks)?;
1155 
    }
1156 
    if !paths.is_empty() {
1157 
        n += repo.discard(paths)?;
1158 
    }
75167672 Andy McCall 1159 
    println!(
1160 
        "{} {} restored to the working copy's base",
1161 
        ui::done("Discarded"),
1162 
        plural(n, "path")
1163 
    );
c6aa5bd9 Andy McCall ↶ 1164 
    Ok(0)
1165 
}
1166
1167 
pub fn hunks(as_json: bool) -> Result<i32> {
fce44ae9 Andy McCall ↶ 1168 
    let repo = open()?;
c6aa5bd9 Andy McCall ↶ 1169 
    let (_, hunks) = repo.hunks()?;
1170 
    if as_json {
75167672 Andy McCall 1171 
        println!(
1172 
            "{}",
1173 
            json::arr(hunks.iter().map(|h| json::obj([
1174 
                ("index", json::n(h.index)),
1175 
                ("path", json::s(&h.path)),
1176 
                ("text", json::s(&h.text))
1177 
            ])))
1178 
        );
c6aa5bd9 Andy McCall ↶ 1179 
        return Ok(0);
1180 
    }
1181 
    if hunks.is_empty() {
75167672 Andy McCall 1182 
        println!(
1183 
            "{}",
1184 
            ui::dim("No hunks: the working copy matches its base.")
1185 
        );
c6aa5bd9 Andy McCall ↶ 1186 
    }
1187 
    for h in &hunks {
75167672 Andy McCall 1188 
        println!(
1189 
            "{} {}",
1190 
            ui::section(format!("hunk {}", h.index)),
1191 
            ui::path(&h.path)
1192 
        );
c6aa5bd9 Andy McCall ↶ 1193 
        for line in h.text.lines() {
75167672 Andy McCall 1194 
            let styled = if line.starts_with('+') {
1195 
                ui::ok(line)
1196 
            } else if line.starts_with('-') {
1197 
                ui::err(line)
1198 
            } else {
1199 
                ui::dim(line)
1200 
            };
c6aa5bd9 Andy McCall ↶ 1201 
            println!("  {styled}");
1202 
        }
1203 
    }
fce44ae9 Andy McCall ↶ 1204 
    Ok(0)
1205 
}
1206
2c9ddac3 Andy McCall ↶ 1207 
pub fn show(change: Option<&str>, revset: Option<&str>, as_json: bool) -> Result<i32> {
fce44ae9 Andy McCall ↶ 1208 
    let repo = open()?;
cc7a0056 Andy McCall ↶ 1209 
    repo.snapshot_status("oxy show")?;
2c9ddac3 Andy McCall ↶ 1210 
    let Some(r) = revset else {
1211 
        let h = repo.resolve_change(change.unwrap_or("@"))?;
1212 
        return show_one(&repo, h, as_json, false);
1213 
    };
1214 
    // Several changes: a JSON array, or the changes one after another.
1215 
    let hashes = repo.revset(r)?.hashes;
1216 
    if as_json {
1217 
        print!("[");
1218 
        for (i, h) in hashes.iter().enumerate() {
1219 
            if i > 0 {
1220 
                print!(",");
1221 
            }
1222 
            show_one(&repo, *h, true, true)?;
1223 
        }
1224 
        println!("]");
1225 
        return Ok(0);
1226 
    }
1227 
    if hashes.is_empty() {
1228 
        println!("{}", ui::dim(format!("No change matches {r:?}.")));
1229 
        return Ok(0);
1230 
    }
1231 
    for (i, h) in hashes.iter().enumerate() {
1232 
        if i > 0 {
1233 
            println!();
1234 
        }
1235 
        show_one(&repo, *h, false, false)?;
1236 
    }
1237 
    Ok(0)
1238 
}
1239
1240 
/// One change, as `oxy show` prints it; `inline` JSON goes without its
1241 
/// newline, for an array.
1242 
fn show_one(repo: &Repo, h: ChangeHash, as_json: bool, inline: bool) -> Result<i32> {
fce44ae9 Andy McCall ↶ 1243 
    let c = repo.store().get_change(&h)?;
c6aa5bd9 Andy McCall ↶ 1244 
    if as_json {
1245 
        let files = repo.diff_files(Some(&h))?;
1246 
        let heads = repo.bookmark_heads()?;
75167672 Andy McCall 1247 
        let entry = oxy_core::repo::LogEntry {
1248 
            hash: h,
1249 
            change: oxy_core::state::ChangeMeta::of(&c),
1250 
            is_working_copy: c.kind == oxy_core::objects::ChangeKind::WorkingCopy,
1251 
            is_head: heads.contains(&h),
1252 
        };
2c9ddac3 Andy McCall ↶ 1253 
        let mut body = log_entry_json(repo, &entry)?;
c6aa5bd9 Andy McCall ↶ 1254 
        body.pop();
75167672 Andy McCall 1255 
        body.push_str(&format!(
1256 
            ",{}:{}}}",
1257 
            json::s("files"),
1258 
            json::arr(files.iter().map(|f| json::obj([
1259 
                ("path", json::s(&f.path)),
1260 
                ("kind", json::s(&f.kind)),
1261 
                ("from", json::opt(f.from.as_deref(), json::s))
1262 
            ])))
1263 
        ));
2c9ddac3 Andy McCall ↶ 1264 
        if inline {
1265 
            print!("{body}");
1266 
        } else {
1267 
            println!("{body}");
1268 
        }
c6aa5bd9 Andy McCall ↶ 1269 
        return Ok(0);
1270 
    }
75167672 Andy McCall 1271 
    println!(
1272 
        "{} {} {}",
1273 
        ui::section("change"),
1274 
        ui::id(short_id(&c)),
1275 
        ui::hash(format!("#{h}"))
1276 
    );
94084087 Andy McCall ↶ 1277 
    println!("{}", ui::kv("kind", format!("{:?}", c.kind).to_lowercase()));
b35df36b Andy McCall ↶ 1278 
    // Fetched but not pulled (oxygen#56): say where it is.
1279 
    if let Some(at) = repo.remote_only_location(&h)? {
1280 
        println!(
1281 
            "{}",
1282 
            ui::kv(
1283 
                "only in",
1284 
                ui::warn(format!(
1285 
                    "{at}: fetched, not yet in a local bookmark (oxy pull)"
1286 
                ))
1287 
            )
1288 
        );
1289 
    }
5cde7882 Andy McCall ↶ 1290 
    let meta = oxy_core::state::ChangeMeta::of(&c);
1291 
    let status = repo.authenticate_change_known(&h, Some(&meta))?;
1292 
    println!("{}", ui::kv("author", ui::author(author_name(repo, &meta))));
1293 
    if let Some(agent) = via(repo, &status, &meta.author) {
1294 
        println!("{}", ui::kv("via", agent.line()));
1295 
    }
75167672 Andy McCall 1296 
    println!(
1297 
        "{}",
1298 
        ui::kv(
1299 
            "date",
1300 
            format!(
1301 
                "{} {}",
1302 
                when(c.hlc.wall_ms),
1303 
                ui::dim(format!("({})", ui::ago(c.hlc.wall_ms)))
1304 
            )
1305 
        )
1306 
    );
94084087 Andy McCall ↶ 1307 
    println!("{}", ui::kv("deps", ui::dim(deps_line(&c))));
2c9ddac3 Andy McCall ↶ 1308 
    println!("{}", ui::kv("sig", signature_line(repo, &h)?));
94084087 Andy McCall ↶ 1309 
    println!();
75167672 Andy McCall 1310 
    for line in (if c.message.is_empty() {
1311 
        "(no description)"
1312 
    } else {
1313 
        &c.message
1314 
    })
1315 
    .lines()
1316 
    {
94084087 Andy McCall ↶ 1317 
        println!("    {line}");
1318 
    }
1319 
    println!();
fce44ae9 Andy McCall ↶ 1320 
    print!("{}", repo.describe_change(&h)?);
1321 
    Ok(0)
1322 
}
1323
1c2bd9ab Andy McCall ↶ 1324 
pub fn checkout(changes: &[String], discard: bool, carry: bool) -> Result<i32> {
fce44ae9 Andy McCall ↶ 1325 
    let repo = open()?;
a46f3e4f Andy McCall ↶ 1326 
    // `oxy checkout BOOKMARK` is being on that bookmark, as `git checkout
1327 
    // BRANCH` is: checking its files out under another bookmark's name
1328 
    // made the next commit move the wrong bookmark (oxygen#60).
1329 
    if let [name] = changes {
1330 
        if *name != repo.config.bookmark && names_bookmark(&repo, name)? {
1331 
            drop(repo);
1332 
            return bookmark_switch(name, discard, carry);
1333 
        }
1334 
    }
fce44ae9 Andy McCall ↶ 1335 
    let heads = if changes.is_empty() {
1336 
        repo.bookmark_heads()?
1337 
    } else {
132b884b Andy McCall ↶ 1338 
        let mut heads = Vec::new();
1339 
        for c in changes {
1340 
            heads.extend(repo.resolve_heads(c)?);
1341 
        }
1342 
        heads
fce44ae9 Andy McCall ↶ 1343 
    };
75167672 Andy McCall 1344 
    let spec = if changes.is_empty() {
1345 
        repo.config.bookmark.clone()
1346 
    } else {
1347 
        changes.join(" ")
1348 
    };
135212de Andy McCall ↶ 1349 
    let sp = ui::spinner(&format!("Checking out {spec}…"));
1c2bd9ab Andy McCall ↶ 1350 
    let command = format!("oxy checkout {spec}");
1351 
    let (r, carried) = if carry {
1352 
        repo.checkout_carry(&heads, &spec, &command)?
1353 
    } else {
1354 
        (repo.checkout(&heads, discard, &command)?, vec![])
1355 
    };
75167672 Andy McCall 1356 
    sp.done(&format!(
1c2bd9ab Andy McCall ↶ 1357 
        "{} on {}: {} written, {} removed{}",
75167672 Andy McCall 1358 
        ui::done("Working copy"),
1359 
        ui::bookmark(&spec),
1360 
        plural(r.written, "file"),
1c2bd9ab Andy McCall ↶ 1361 
        r.removed,
1362 
        if carried.is_empty() {
1363 
            String::new()
1364 
        } else {
1365 
            format!("; carried {}", plural(carried.len(), "changed path"))
1366 
        }
75167672 Andy McCall 1367 
    ));
9b723f69 Andy McCall ↶ 1368 
    print_removed(&r);
4dee277c Andy McCall ↶ 1369 
    for n in &r.notes {
1370 
        println!("  {} {n}", ui::note());
1371 
    }
fce44ae9 Andy McCall ↶ 1372 
    if r.conflicted {
75167672 Andy McCall 1373 
        println!(
1374 
            "  {} {}",
1375 
            ui::caution(),
1376 
            ui::warn("this state has conflicts; see oxy status")
1377 
        );
fce44ae9 Andy McCall ↶ 1378 
    }
98a1620a Andy McCall ↶ 1379 
    where_now(&repo);
fce44ae9 Andy McCall ↶ 1380 
    Ok(0)
1381 
}
1382
c6aa5bd9 Andy McCall ↶ 1383 
pub fn resolve(as_json: bool) -> Result<i32> {
fce44ae9 Andy McCall ↶ 1384 
    let repo = open()?;
1385 
    let snap = repo.snapshot("oxy resolve")?;
c6aa5bd9 Andy McCall ↶ 1386 
    if as_json {
1387 
        println!("{}", repo.status_json(&snap)?);
75167672 Andy McCall 1388 
        return Ok(if snap.base_snapshot.is_conflicted() {
1389 
            2
1390 
        } else {
1391 
            0
1392 
        });
c6aa5bd9 Andy McCall ↶ 1393 
    }
fce44ae9 Andy McCall ↶ 1394 
    if !snap.base_snapshot.is_conflicted() {
1395 
        println!("The working copy's base has no conflicts.");
1396 
        return Ok(0);
1397 
    }
1398 
    let mut remaining = 0;
1399 
    for (p, f) in &snap.base_snapshot.files {
1400 
        if !f.is_conflicted() {
1401 
            continue;
1402 
        }
75167672 Andy McCall 1403 
        match snap
1404 
            .statuses
1405 
            .iter()
1406 
            .find(|s| s.path == *p)
1407 
            .map(|s| s.status)
1408 
        {
fce44ae9 Andy McCall ↶ 1409 
            Some(ChangeStatus::Resolved) => println!("resolved   {p}"),
1410 
            Some(ChangeStatus::ConflictEdited) => {
1411 
                remaining += 1;
1412 
                println!("markers    {p}");
1413 
            }
1414 
            _ => {
1415 
                remaining += 1;
1416 
                println!("unresolved {p}");
1417 
            }
1418 
        }
1419 
    }
1420 
    for c in &snap.base_snapshot.tree.conflicts {
1421 
        remaining += 1;
1422 
        println!("tree       {c:?}");
1423 
    }
1424 
    if remaining == 0 {
1425 
        println!("All conflicts are resolved; `oxy commit` will record the resolution.");
1426 
        Ok(0)
1427 
    } else {
1428 
        Ok(2)
1429 
    }
1430 
}
1431
1432 
pub fn undo() -> Result<i32> {
1433 
    let repo = open()?;
530a0fc6 Andy McCall ↶ 1434 
    let u = repo.undo()?;
1435 
    println!("{} {}", ui::done("Undone:"), u.command);
1436 
    for c in &u.changes {
1437 
        println!("  {} {}", ui::note(), change_words(&repo, c));
1438 
    }
1439 
    if u.others_kept > 0 {
1440 
        let s = if u.others_kept == 1 { "" } else { "s" };
1441 
        println!(
1442 
            "  {} {}",
1443 
            ui::note(),
1444 
            ui::dim(format!(
1445 
                "{} newer operation{s} from other workspaces left as they are",
1446 
                u.others_kept
1447 
            ))
1448 
        );
1449 
    }
1450 
    for (bookmark, remote) in &u.pushed {
1451 
        println!(
1452 
            "  {} {}",
1453 
            ui::caution(),
1454 
            ui::warn(format!(
1455 
                "{remote}/{bookmark} already has what this undid: undone here only; the next push of {bookmark} needs --force to take it back there"
1456 
            ))
1457 
        );
1458 
    }
98a1620a Andy McCall ↶ 1459 
    where_now(&repo);
fce44ae9 Andy McCall ↶ 1460 
    Ok(0)
1461 
}
1462
98a1620a Andy McCall ↶ 1463 
pub fn op_log(limit: Option<usize>, as_json: bool) -> Result<i32> {
fce44ae9 Andy McCall ↶ 1464 
    let repo = open()?;
98a1620a Andy McCall ↶ 1465 
    let ops = repo.op_log()?;
1466 
    // What each operation changed, against the one before it.
1467 
    let changes_of = |i: usize| -> Result<Vec<oxy_core::repo::ViewChange>> {
1468 
        match ops.get(i + 1) {
1469 
            Some((_, before)) => Ok(repo.view_changes(&before.view, &ops[i].1.view)?),
1470 
            None => Ok(vec![]),
1471 
        }
1472 
    };
c6aa5bd9 Andy McCall ↶ 1473 
    if as_json {
98a1620a Andy McCall ↶ 1474 
        let mut items = Vec::new();
1475 
        for (i, (r, op)) in ops.iter().enumerate().take(limit.unwrap_or(usize::MAX)) {
1476 
            let summary: Vec<String> = changes_of(i)?
1477 
                .iter()
1478 
                .map(|c| change_words(&repo, c))
1479 
                .collect();
1480 
            items.push(json::obj([
1481 
                ("id", json::s(&r.to_hex())),
1482 
                ("when_ms", json::n(op.hlc.wall_ms)),
1483 
                ("command", json::s(&op.command)),
1484 
                ("snapshot", json::b(op.is_snapshot())),
1485 
                ("current", json::b(i == 0)),
1486 
                ("changes", json::arr(summary.iter().map(|x| json::s(x)))),
1487 
            ]));
1488 
        }
1489 
        println!("{}", json::arr(items));
c6aa5bd9 Andy McCall ↶ 1490 
        return Ok(0);
1491 
    }
98a1620a Andy McCall ↶ 1492 
    let id_prefix = unique_prefixes(ops.iter().map(|(r, _)| r.to_hex()));
1493 
    let id = |r: &oxy_core::hash::ObjectRef| {
1494 
        let hex = r.to_hex();
1495 
        let n = id_prefix.get(&hex).copied().unwrap_or(12).min(12);
1496 
        format!("{}{}", ui::id(&hex[..n]), ui::dim(&hex[n..12]))
1497 
    };
1498 
    let rail = ui::dim(ui::glyph("│", "|"));
1499 
    let (mut i, mut shown) = (0, 0);
1500 
    while i < ops.len() && shown < limit.unwrap_or(usize::MAX) {
1501 
        let (r, op) = &ops[i];
75167672 Andy McCall 1502 
        let bullet = if i == 0 {
98a1620a Andy McCall ↶ 1503 
            ui::ok(ui::glyph("@", "@"))
75167672 Andy McCall 1504 
        } else {
1505 
            ui::dim(ui::glyph("○", "o"))
1506 
        };
98a1620a Andy McCall ↶ 1507 
        // A run of snapshots folds into one entry.
1508 
        let mut run = 1;
1509 
        while op.is_snapshot() && i + run < ops.len() && ops[i + run].1.is_snapshot() {
1510 
            run += 1;
1511 
        }
1512 
        let when = ui::dim(ui::ago(op.hlc.wall_ms));
1513 
        if op.is_snapshot() {
1514 
            let span = if run > 1 {
1515 
                format!("{} {}", ui::dim("…"), id(&ops[i + run - 1].0))
1516 
            } else {
1517 
                String::new()
1518 
            };
1519 
            println!(
1520 
                "{bullet}  {}{} {when}",
1521 
                id(r),
1522 
                if span.is_empty() {
1523 
                    String::new()
1524 
                } else {
1525 
                    format!(" {span}")
1526 
                }
1527 
            );
1528 
            println!(
1529 
                "{rail}  {}",
1530 
                ui::dim(if run == 1 {
1531 
                    "working-copy snapshot".to_string()
1532 
                } else {
1533 
                    format!("{run} working-copy snapshots")
1534 
                })
1535 
            );
1536 
        } else {
1537 
            println!("{bullet}  {} {when}", id(r));
1538 
            let words: Vec<String> = changes_of(i)?
1539 
                .iter()
1540 
                .map(|c| change_words(&repo, c))
1541 
                .collect();
1542 
            let summary = if words.is_empty() {
1543 
                if i + 1 == ops.len() {
1544 
                    "created the repository".to_string()
1545 
                } else {
1546 
                    "no bookmark or working-copy change".to_string()
1547 
                }
1548 
            } else {
1549 
                words.join("; ")
1550 
            };
1551 
            println!(
1552 
                "{rail}  {}",
1553 
                if i == 0 {
1554 
                    ui::subject(&summary)
1555 
                } else {
1556 
                    summary
1557 
                }
1558 
            );
1559 
            let cmd = op.command.lines().next().unwrap_or("");
1560 
            let cmd: String = cmd.chars().take(100).collect();
1561 
            println!("{rail}  {}", ui::dim(cmd));
1562 
        }
1563 
        i += run;
1564 
        shown += 1;
1565 
    }
1566 
    if i < ops.len() {
75167672 Andy McCall 1567 
        println!(
98a1620a Andy McCall ↶ 1568 
            "{}",
1569 
            ui::dim(format!(
1570 
                "{} {} older; pass -n to see more",
1571 
                ui::glyph("…", "..."),
1572 
                plural(ops.len() - i, "operation")
1573 
            ))
1574 
        );
1575 
    }
1576 
    Ok(0)
1577 
}
1578
1579 
/// One change an operation made, in words.
1580 
fn change_words(repo: &Repo, c: &oxy_core::repo::ViewChange) -> String {
1581 
    use oxy_core::repo::ViewChange::*;
1582 
    match c {
1583 
        BookmarkCreated { name, heads } => {
1584 
            format!("created bookmark {name} ({})", plural(*heads, "head"))
1585 
        }
1586 
        BookmarkDeleted { name } => format!("deleted bookmark {name}"),
1587 
        BookmarkMoved { name, from, to } if from == to => format!("moved {name}"),
1588 
        BookmarkMoved { name, from, to } => format!(
1589 
            "{name}: {from} {} {}",
1590 
            ui::glyph("→", "->"),
1591 
            plural(*to, "head")
1592 
        ),
1593 
        RemoteMoved { remote, name } => format!("{remote}/{name} updated"),
1594 
        TagCreated { name } => format!("tagged {name}"),
1595 
        TagDeleted { name } => format!("removed tag {name}"),
1596 
        Policy => "trust policy changed".to_string(),
1597 
        WorkingCopy { change } => match repo.store().get_change_meta(change) {
1598 
            Ok(m) => format!("working copy now {}", m.change_id.short(8)),
1599 
            Err(_) => "working copy moved".to_string(),
1600 
        },
1601 
    }
1602 
}
1603
1604 
pub fn op_restore(op: &str, discard: bool) -> Result<i32> {
1605 
    let repo = open()?;
1606 
    let sp = ui::spinner(&format!("Restoring to operation {op}…"));
1607 
    let r = repo.op_restore(op, discard)?;
1608 
    sp.done(&format!(
1609 
        "{} to operation {} {}",
1610 
        ui::done("Restored"),
1611 
        ui::hash(r.op.short(12)),
1612 
        ui::dim(r.command.lines().next().unwrap_or(""))
1613 
    ));
1614 
    println!(
1615 
        "  {} {}",
1616 
        ui::note(),
1617 
        ui::dim(format!(
1618 
            "{} written, {} removed; oxy undo goes back again",
1619 
            plural(r.checkout.written, "file"),
1620 
            r.checkout.removed
1621 
        ))
1622 
    );
1623 
    where_now(&repo);
1624 
    Ok(0)
1625 
}
1626
1627 
pub fn op_revert(op: &str) -> Result<i32> {
1628 
    let repo = open()?;
1629 
    let r = repo.op_revert(op)?;
1630 
    let view = repo.view()?;
1631 
    let names: Vec<String> = r
1632 
        .reverted
1633 
        .iter()
1634 
        .map(|n| {
1635 
            if view.bookmarks.contains_key(n) {
1636 
                ui::bookmark(n)
75167672 Andy McCall 1637 
            } else {
98a1620a Andy McCall ↶ 1638 
                format!("{} (removed)", ui::bookmark(n))
75167672 Andy McCall 1639 
            }
98a1620a Andy McCall ↶ 1640 
        })
1641 
        .collect();
1642 
    println!(
1643 
        "{} operation {} {}",
1644 
        ui::done("Reverted"),
1645 
        ui::hash(r.op.short(12)),
1646 
        ui::dim(r.command.lines().next().unwrap_or(""))
1647 
    );
1648 
    println!(
1649 
        "  {} {}",
1650 
        ui::note(),
1651 
        ui::dim(format!("as before it: {}", names.join(", ")))
1652 
    );
1653 
    if !r.kept.is_empty() {
1654 
        println!(
1655 
            "  {} {}",
1656 
            ui::caution(),
1657 
            ui::warn(format!(
1658 
                "left as they are, having moved again since: {}",
1659 
                r.kept.join(", ")
1660 
            ))
75167672 Andy McCall 1661 
        );
fce44ae9 Andy McCall ↶ 1662 
    }
98a1620a Andy McCall ↶ 1663 
    if !r.checked_out && r.reverted.contains(&repo.config.bookmark) {
1664 
        println!(
1665 
            "  {} {}",
1666 
            ui::note(),
1667 
            ui::dim("the working copy has work of its own: oxy checkout to move it")
1668 
        );
1669 
    }
1670 
    where_now(&repo);
fce44ae9 Andy McCall ↶ 1671 
    Ok(0)
98a1620a Andy McCall ↶ 1672 
}
1673
1674 
/// Where the working copy and bookmark are now, after a command moved
1675 
/// them (as jj says "Working copy now at").
1676 
pub fn where_now(repo: &Repo) {
1677 
    let Ok((_, wc)) = repo.working_copy() else {
1678 
        return;
1679 
    };
1680 
    let heads = repo.bookmark_heads().unwrap_or_default();
1681 
    let newest = heads
1682 
        .iter()
1683 
        .filter_map(|h| repo.store().get_change_meta(h).ok().map(|m| (m, *h)))
1684 
        .max_by_key(|(m, _)| m.hlc);
1685 
    println!(
1686 
        "  {} {}",
1687 
        ui::dim(format!("{:<13}", "Working copy")),
1688 
        ui::id(wc.change_id.short(8))
1689 
    );
1690 
    let tail = match newest {
1691 
        Some((m, _)) => format!(
1692 
            ", newest {} {}",
1693 
            ui::id(m.change_id.short(8)),
1694 
            subject_of(&m.message)
1695 
        ),
1696 
        None => String::new(),
1697 
    };
1698 
    println!(
1699 
        "  {} {}: {}{tail}",
1700 
        ui::dim(format!("{:<13}", "Bookmark")),
1701 
        ui::bookmark(&repo.config.bookmark),
1702 
        plural(heads.len(), "head")
1703 
    );
fce44ae9 Andy McCall ↶ 1704 
}
d02e545d Andy McCall ↶ 1705
b689779e Andy McCall ↶ 1706 
pub fn gc(now: bool, expire_snapshots: bool) -> Result<i32> {
1707 
    let mut repo = open()?;
1708 
    if expire_snapshots {
1709 
        repo.config.snapshot_retention_days = 0;
1710 
    }
135212de Andy McCall ↶ 1711 
    let sp = ui::spinner("Packing and pruning…");
9ae4d15a Andy McCall ↶ 1712 
    let r = repo.gc_with(now, &mut |phase| sp.set(&format!("{phase}…")))?;
135212de Andy McCall ↶ 1713 
    sp.clear();
ba160f60 Andy McCall ↶ 1714 
    if r.packed.objects > 0 {
d02e545d Andy McCall ↶ 1715 
        println!(
da652d63 Andy McCall ↶ 1716 
            "Packed {} into one pack: {} bytes -> {} bytes ({:.0}%).",
1717 
            plural(r.packed.objects, "object"),
ba160f60 Andy McCall ↶ 1718 
            r.packed.raw_bytes,
1719 
            r.packed.packed_bytes,
1720 
            100.0 * r.packed.packed_bytes as f64 / r.packed.raw_bytes.max(1) as f64
d02e545d Andy McCall ↶ 1721 
        );
1722 
    }
75167672 Andy McCall 1723 
    println!(
1724 
        "{} reachable; pruned {} ({} bytes){}{}; {} present.",
ba160f60 Andy McCall ↶ 1725 
        plural(r.reachable, "object"),
1726 
        plural(r.pruned.objects, "unreachable object"),
1727 
        r.pruned.bytes,
75167672 Andy McCall 1728 
        if r.pruned.deferred > 0 {
1729 
            format!(
1730 
                "; {} deferred by the grace period (use --now)",
1731 
                plural(r.pruned.deferred, "object")
1732 
            )
1733 
        } else {
1734 
            String::new()
1735 
        },
1736 
        if r.merged_packs > 0 {
1737 
            format!("; merged {} into one", plural(r.merged_packs, "pack"))
1738 
        } else {
1739 
            String::new()
1740 
        },
ba160f60 Andy McCall ↶ 1741 
        plural(repo.store().pack_count(), "pack")
1742 
    );
d02e545d Andy McCall ↶ 1743 
    Ok(0)
1744 
}
614541c3 Andy McCall ↶ 1745
d8d93678 Andy McCall ↶ 1746 
/// `oxy gc --remote NAME`: fold a store remote's bundles into one.
1747 
pub fn gc_remote(name: &str, now: bool) -> Result<i32> {
1748 
    let repo = open()?;
1749 
    let sp = ui::spinner(&format!("Folding {name}'s bundles…"));
1750 
    let r = repo.gc_remote(name, now)?;
1751 
    sp.clear();
1752 
    if r.merged > 0 {
1753 
        println!(
1754 
            "{} {} into one of {} bytes ({})",
1755 
            ui::done("Folded"),
1756 
            plural(r.merged, "bundle"),
1757 
            r.bundle_bytes,
1758 
            plural(r.changes, "change")
1759 
        );
1760 
    } else {
1761 
        println!(
1762 
            "{} {}",
1763 
            ui::note(),
1764 
            ui::dim("nothing to fold: one bundle holds everything")
1765 
        );
1766 
    }
1767 
    println!(
1768 
        "  {} {}",
1769 
        ui::note(),
1770 
        ui::dim(format!(
1771 
            "removed {}{}",
1772 
            plural(r.deleted, "superseded bundle"),
1773 
            if r.deferred > 0 {
1774 
                format!(
1775 
                    "; {} kept for readers that may still fetch them (use --now)",
1776 
                    plural(r.deferred, "bundle")
1777 
                )
1778 
            } else {
1779 
                String::new()
1780 
            }
1781 
        ))
1782 
    );
1783 
    Ok(0)
1784 
}
1785
3e5772cc Andy McCall ↶ 1786 
/// `oxy doctor`: exit 1 when a check fails, 0 otherwise (warnings allowed).
1787 
pub fn doctor(offline: bool, as_json: bool) -> Result<i32> {
1788 
    use oxy_core::repo::Health;
1789 
    let repo = open()?;
1790 
    let sp = ui::spinner(if offline {
1791 
        "Checking…"
1792 
    } else {
1793 
        "Checking, and contacting remotes…"
1794 
    });
1795 
    let r = repo.doctor(!offline);
1796 
    sp.clear();
1797 
    let code = if r.worst() == Health::Fail { 1 } else { 0 };
1798 
    let word = |h: Health| match h {
1799 
        Health::Ok => "ok",
1800 
        Health::Warn => "warning",
1801 
        Health::Fail => "fail",
1802 
    };
1803 
    if as_json {
1804 
        let checks: Vec<String> = r
1805 
            .checks
1806 
            .iter()
1807 
            .map(|c| {
1808 
                json::obj([
1809 
                    ("area", json::s(&c.area)),
1810 
                    ("health", json::s(word(c.health))),
1811 
                    ("message", json::s(&c.message)),
1812 
                    ("hint", json::opt(c.hint.as_deref(), json::s)),
1813 
                ])
1814 
            })
1815 
            .collect();
1816 
        println!(
1817 
            "{}",
1818 
            json::obj([("ok", json::b(code == 0)), ("checks", json::arr(checks))])
1819 
        );
1820 
        return Ok(code);
1821 
    }
1822 
    let mut last = "";
1823 
    for c in &r.checks {
1824 
        if c.area != last {
1825 
            println!("{}", ui::section(&c.area));
1826 
            last = &c.area;
1827 
        }
1828 
        let mark = match c.health {
1829 
            Health::Ok => ui::ok(ui::glyph("✔", "v")),
1830 
            Health::Warn => ui::caution(),
1831 
            Health::Fail => ui::err(ui::glyph("✖", "x")),
1832 
        };
1833 
        println!("  {mark} {}", c.message);
1834 
        if let Some(h) = &c.hint {
1835 
            println!("    {} {}", ui::dim("→"), ui::dim(h));
1836 
        }
1837 
    }
1838 
    let fails = r.checks.iter().filter(|c| c.health == Health::Fail).count();
1839 
    let warns = r.checks.iter().filter(|c| c.health == Health::Warn).count();
1840 
    if fails + warns == 0 {
1841 
        println!("{}", ui::done("Everything looks right."));
1842 
    } else {
1843 
        println!(
1844 
            "{} {}, {}.",
1845 
            if fails > 0 {
1846 
                ui::err(ui::glyph("✖", "x"))
1847 
            } else {
1848 
                ui::caution()
1849 
            },
1850 
            plural(fails, "problem"),
1851 
            plural(warns, "warning")
1852 
        );
1853 
    }
1854 
    Ok(code)
1855 
}
1856
387335ff Andy McCall ↶ 1857 
/// `oxy fsck`: exit 0 when sound (warnings allowed), 1 on any error.
1858 
pub fn fsck(as_json: bool) -> Result<i32> {
1859 
    use oxy_core::repo::Severity;
1860 
    let repo = open()?;
1861 
    let sp = ui::spinner("Checking every object…");
1862 
    let r = repo.fsck()?;
1863 
    sp.clear();
1864 
    let code = if r.errors() > 0 { 1 } else { 0 };
1865 
    if as_json {
1866 
        let problems: Vec<String> = r
1867 
            .problems
1868 
            .iter()
1869 
            .map(|p| {
1870 
                json::obj([
1871 
                    (
1872 
                        "severity",
1873 
                        json::s(match p.severity {
1874 
                            Severity::Error => "error",
1875 
                            Severity::Warning => "warning",
1876 
                        }),
1877 
                    ),
1878 
                    (
1879 
                        "object",
1880 
                        json::opt(p.object.map(|o| o.to_hex()).as_deref(), json::s),
1881 
                    ),
1882 
                    ("what", json::s(&p.what)),
1883 
                ])
1884 
            })
1885 
            .collect();
1886 
        println!(
1887 
            "{}",
1888 
            json::obj([
1889 
                ("ok", json::b(code == 0)),
1890 
                ("objects", json::n(r.objects)),
1891 
                ("ops", json::n(r.ops)),
1892 
                ("changes", json::n(r.changes)),
1893 
                ("signed", json::n(r.signed)),
1894 
                ("unsigned", json::n(r.unsigned)),
1895 
                ("checkpoints", json::n(r.checkpoints)),
1896 
                ("attestations", json::n(r.attestations)),
1897 
                ("errors", json::n(r.errors())),
1898 
                ("warnings", json::n(r.warnings())),
1899 
                ("problems", json::arr(problems)),
1900 
            ])
1901 
        );
1902 
        return Ok(code);
1903 
    }
1904 
    println!(
1905 
        "Checked {}, {}, {} ({} signed or sealed, {} unsigned), {}, {}.",
1906 
        plural(r.objects, "object"),
1907 
        plural(r.ops, "operation"),
1908 
        plural(r.changes, "change"),
1909 
        r.signed,
1910 
        r.unsigned,
1911 
        plural(r.checkpoints, "checkpoint"),
1912 
        plural(r.attestations, "attestation"),
1913 
    );
1914 
    for p in &r.problems {
1915 
        let obj = p
1916 
            .object
1917 
            .map(|o| format!("{} ", ui::hash(format!("#{}", o.short(12)))))
1918 
            .unwrap_or_default();
1919 
        match p.severity {
1920 
            Severity::Error => println!("{} {obj}{}", ui::err(ui::glyph("✖", "x")), p.what),
1921 
            Severity::Warning => println!("{} {obj}{}", ui::caution(), p.what),
1922 
        }
1923 
    }
1924 
    if r.problems.is_empty() {
1925 
        println!("{}", ui::done("No problems found."));
1926 
    } else if code == 0 {
1927 
        println!(
1928 
            "{}",
1929 
            ui::done(format!("Sound, with {}.", plural(r.warnings(), "warning")))
1930 
        );
1931 
    } else {
1932 
        println!(
1933 
            "{} {} and {}. Fetch missing objects from a remote with `oxy pull`, or clone afresh and compare.",
1934 
            ui::err(ui::glyph("✖", "x")),
1935 
            plural(r.errors(), "error"),
1936 
            plural(r.warnings(), "warning")
1937 
        );
1938 
    }
1939 
    Ok(code)
1940 
}
1941
79d03f82 Andy McCall ↶ 1942 
/// The head the working copy sits on, for commands that default to it. With
1943 
/// several heads beneath the working copy, the most recently made one is
1944 
/// chosen and announced.
614541c3 Andy McCall ↶ 1945 
fn current_head(repo: &Repo) -> Result<oxy_core::hash::ChangeHash> {
cc7a0056 Andy McCall ↶ 1946 
    let snap = repo.snapshot_status("oxy")?;
614541c3 Andy McCall ↶ 1947 
    let base = snap.base.maximal(&snap.wc.deps);
1948 
    match base.as_slice() {
79d03f82 Andy McCall ↶ 1949 
        [] => anyhow::bail!("the working copy sits on no change yet"),
614541c3 Andy McCall ↶ 1950 
        [h] => Ok(*h),
79d03f82 Andy McCall ↶ 1951 
        many => {
1952 
            let latest = many
1953 
                .iter()
1954 
                .max_by_key(|h| snap.base.get(h).map(|c| (c.hlc, **h)))
1955 
                .copied()
1956 
                .unwrap();
1957 
            let c = repo.store().get_change(&latest)?;
75167672 Andy McCall 1958 
            println!(
1959 
                "Defaulting to {} #{} (most recent of the {} heads under the working copy)",
1960 
                short_id(&c),
1961 
                latest.short(12),
1962 
                many.len()
1963 
            );
79d03f82 Andy McCall ↶ 1964 
            Ok(latest)
1965 
        }
614541c3 Andy McCall ↶ 1966 
    }
1967 
}
1968
6a81dbab Andy McCall ↶ 1969 
/// `oxy describe` without -m: the working copy's name for a build.
1970 
pub fn describe_name(as_json: bool) -> Result<i32> {
1971 
    let repo = open()?;
1972 
    let d = repo.describe_working_copy()?;
1973 
    if as_json {
1974 
        println!(
1975 
            "{}",
1976 
            json::obj([
1977 
                ("describe", json::s(&d.line())),
1978 
                ("tag", json::opt(d.tag.as_ref(), |t| json::s(t))),
1979 
                ("distance", json::n(d.distance)),
1980 
                ("bookmark", json::s(&d.bookmark)),
1981 
                ("change", json::s(&d.change.to_hex())),
1982 
                ("hash", json::s(&d.hash.to_hex())),
1983 
                ("dirty", json::b(d.dirty)),
1984 
            ])
1985 
        );
1986 
    } else {
1987 
        println!("{}", d.line());
1988 
    }
1989 
    Ok(0)
1990 
}
1991
614541c3 Andy McCall ↶ 1992 
pub fn describe(message: &str, change: Option<&str>) -> Result<i32> {
1993 
    let repo = open()?;
1994 
    let h = match change {
1995 
        Some(c) => repo.resolve_change(c)?,
1996 
        None => current_head(&repo)?,
1997 
    };
1998 
    let new = repo.describe(&h, message)?;
631fc897 Andy McCall ↶ 1999 
    let c = repo.store().get_change_meta(&new)?;
75167672 Andy McCall 2000 
    println!(
2001 
        "{} {} {}  {}",
2002 
        ui::done("Described"),
631fc897 Andy McCall ↶ 2003 
        ui::id(c.change_id.short(8)),
75167672 Andy McCall 2004 
        ui::hash(format!("#{}", new.short(12))),
2005 
        ui::subject(subject_of(message))
2006 
    );
614541c3 Andy McCall ↶ 2007 
    Ok(0)
2008 
}
2009
23b217d7 Andy McCall ↶ 2010 
pub fn amend(message: Option<&str>, into: Option<&str>) -> Result<i32> {
614541c3 Andy McCall ↶ 2011 
    let repo = open()?;
530a0fc6 Andy McCall ↶ 2012 
    let before = repo.view()?;
23b217d7 Andy McCall ↶ 2013 
    let new = match into {
2014 
        Some(spec) => {
2015 
            let target = repo.resolve_change(spec)?;
2016 
            repo.amend_into(&target, message)?
2017 
        }
2018 
        None => repo.amend(message)?,
2019 
    };
631fc897 Andy McCall ↶ 2020 
    let c = repo.store().get_change_meta(&new)?;
75167672 Andy McCall 2021 
    println!(
2022 
        "{} {} {}  {}",
2023 
        ui::done("Amended"),
631fc897 Andy McCall ↶ 2024 
        ui::id(c.change_id.short(8)),
75167672 Andy McCall 2025 
        ui::hash(format!("#{}", new.short(12))),
2026 
        ui::subject(subject_of(&c.message))
2027 
    );
530a0fc6 Andy McCall ↶ 2028 
    // Rewriting what a remote already has means the next push replaces it
2029 
    // there (oxygen#99): say so now, not when the push is refused.
2030 
    let bookmark = repo.config.bookmark.clone();
2031 
    let (had, has) = (
2032 
        repo.heads_of(&before, &bookmark)?,
2033 
        repo.heads_of(&repo.view()?, &bookmark)?,
2034 
    );
2035 
    for (remote, bookmarks) in &before.remotes {
2036 
        let Some(st) = bookmarks.get(&bookmark) else {
2037 
            continue;
2038 
        };
2039 
        let theirs = repo.store().get_state(st)?.heads;
2040 
        if theirs.iter().any(|h| had.contains(h) && !has.contains(h)) {
2041 
            println!(
2042 
                "  {} {}",
2043 
                ui::caution(),
2044 
                ui::warn(format!(
2045 
                    "{remote}/{bookmark} has the change as it was: the next push of {bookmark} needs --force to replace it"
2046 
                ))
2047 
            );
2048 
        }
2049 
    }
98a1620a Andy McCall ↶ 2050 
    where_now(&repo);
614541c3 Andy McCall ↶ 2051 
    Ok(0)
2052 
}
2053
2c9ddac3 Andy McCall ↶ 2054 
pub fn abandon(change: Option<&str>, revset: Option<&str>, yes: bool) -> Result<i32> {
614541c3 Andy McCall ↶ 2055 
    let repo = open()?;
2c9ddac3 Andy McCall ↶ 2056 
    let Some(r) = revset else {
2057 
        let h = repo.resolve_change(change.unwrap_or_default())?;
2058 
        abandon_one(&repo, h)?;
2059 
        where_now(&repo);
2060 
        return Ok(0);
2061 
    };
2062 
    // A revset: say what it selects, refuse an empty set, ask above a few.
2063 
    let selected = repo.revset(r)?;
2064 
    let wc = repo.working_copy().ok().map(|(h, _)| h);
2065 
    let hashes: Vec<ChangeHash> = selected
2066 
        .hashes
2067 
        .iter()
2068 
        .copied()
2069 
        .filter(|h| Some(*h) != wc)
2070 
        .collect();
2071 
    if hashes.is_empty() {
2072 
        anyhow::bail!("{r:?} selects no change to abandon");
2073 
    }
2074 
    println!(
2075 
        "{} {} selects {}:",
2076 
        ui::section("abandon"),
2077 
        ui::id(r),
2078 
        plural(hashes.len(), "change")
2079 
    );
2080 
    for h in &hashes {
2081 
        if let Some(m) = selected.metas.get(h) {
2082 
            println!(
2083 
                "  {} {}  {}",
2084 
                ui::id(m.change_id.short(8)),
2085 
                ui::hash(format!("#{}", h.short(12))),
2086 
                subject_of(&m.message)
2087 
            );
2088 
        }
2089 
    }
2090 
    const ASK_ABOVE: usize = 5;
2091 
    if hashes.len() > ASK_ABOVE && !yes {
2092 
        anyhow::bail!("that is more than {ASK_ABOVE} changes; pass --yes to abandon them all");
2093 
    }
2094 
    // Newest first: abandoning a change rewrites what depends on it, so a
2095 
    // later member is found again by its ChangeId.
2096 
    let mut done = 0;
2097 
    for h in &hashes {
2098 
        let Some(m) = selected.metas.get(h) else {
2099 
            continue;
2100 
        };
2101 
        let now = match repo.resolve_change(&m.change_id.to_hex()) {
2102 
            Ok(h) => h,
2103 
            Err(_) => continue,
2104 
        };
2105 
        abandon_one(&repo, now)?;
2106 
        done += 1;
2107 
    }
2108 
    println!("{} {}", ui::done("Abandoned"), plural(done, "change"));
2109 
    where_now(&repo);
2110 
    Ok(0)
2111 
}
2112
2113 
fn abandon_one(repo: &Repo, h: ChangeHash) -> Result<()> {
631fc897 Andy McCall ↶ 2114 
    let c = repo.store().get_change_meta(&h)?;
6706bdcf Andy McCall ↶ 2115 
    let notes = repo.abandon(&h)?;
75167672 Andy McCall 2116 
    println!(
2117 
        "{} {} {}  {}",
2118 
        ui::done("Abandoned"),
631fc897 Andy McCall ↶ 2119 
        ui::id(c.change_id.short(8)),
75167672 Andy McCall 2120 
        ui::hash(format!("#{}", h.short(12))),
2121 
        ui::dim("its content remains on disk as uncommitted work if the working copy sat on it")
2122 
    );
6706bdcf Andy McCall ↶ 2123 
    for n in notes {
94084087 Andy McCall ↶ 2124 
        println!("  {} {n}", ui::note());
6706bdcf Andy McCall ↶ 2125 
    }
2c9ddac3 Andy McCall ↶ 2126 
    Ok(())
614541c3 Andy McCall ↶ 2127 
}
252e8cb2 Andy McCall ↶ 2128
2129 
pub fn checkpoint() -> Result<i32> {
2130 
    let repo = open()?;
135212de Andy McCall ↶ 2131 
    let sp = ui::spinner("Writing checkpoint…");
252e8cb2 Andy McCall ↶ 2132 
    let (r, changes, bytes) = repo.checkpoint()?;
75167672 Andy McCall 2133 
    sp.done(&format!(
2134 
        "{} {} of {} ({} bytes) for {}",
2135 
        ui::done("Checkpoint"),
2136 
        ui::hash(format!("#{}", r.short(12))),
2137 
        plural(changes, "change"),
2138 
        bytes,
2139 
        ui::id(&repo.config.bookmark)
2140 
    ));
135212de Andy McCall ↶ 2141 
    Ok(0)
2142 
}
2143
2144 
/// For shell prompts: silent (exit 1) outside a repository, otherwise one line.
694805cc Andy McCall ↶ 2145 
pub fn prompt(format: &str, glyphs: bool, color: Option<&str>) -> Result<i32> {
75167672 Andy McCall 2146 
    let Ok(repo) = Repo::open(&std::env::current_dir()?) else {
2147 
        return Ok(1);
2148 
    };
135212de Andy McCall ↶ 2149 
    let info = repo.quick_status()?;
75167672 Andy McCall 2150 
    let fmt = if glyphs && format == oxy_core::repo::DEFAULT_PROMPT_FORMAT {
2151 
        oxy_core::repo::GLYPH_PROMPT_FORMAT
2152 
    } else {
2153 
        format
2154 
    };
694805cc Andy McCall ↶ 2155 
    let line = match color {
2156 
        Some("bash") => info.format_colored(fmt, ("\\[", "\\]")),
2157 
        Some("zsh") => info.format_colored(fmt, ("%{", "%}")),
2158 
        Some(_) => info.format_colored(fmt, ("", "")),
2159 
        None => info.format(fmt),
2160 
    };
2161 
    println!("{line}");
252e8cb2 Andy McCall ↶ 2162 
    Ok(0)
2163 
}
7421309f Andy McCall ↶ 2164
2165 
pub fn sparse(paths: &[String]) -> Result<i32> {
2166 
    let mut repo = open()?;
2167 
    if paths.is_empty() {
2168 
        if repo.config.sparse_paths.is_empty() {
2169 
            println!("No sparse filter: the whole tree is materialized.");
2170 
        } else {
2171 
            println!("{}", ui::heading("Sparse filter"));
2172 
            for p in &repo.config.sparse_paths {
2173 
                println!("  {}", ui::path(p));
2174 
            }
2175 
        }
2176 
        return Ok(0);
2177 
    }
2178 
    let snap = repo.snapshot("oxy sparse")?;
2179 
    if !snap.wc.tree_ops.is_empty() || !snap.wc.edits.is_empty() {
75167672 Andy McCall 2180 
        anyhow::bail!(
2181 
            "the working copy has changes; commit them before changing the sparse filter"
2182 
        );
7421309f Andy McCall ↶ 2183 
    }
2184 
    repo.config.set("filter.paths", &paths.join(","))?;
2185 
    repo.save_config()?;
2186 
    let heads = repo.bookmark_heads()?;
2187 
    let sp = ui::spinner("Re-checking out with the new filter…");
2188 
    let r = repo.checkout(&heads, true, "oxy sparse (checkout)")?;
75167672 Andy McCall 2189 
    sp.done(&format!(
2190 
        "{} {}: {} written, {} removed",
c07406bc Andy McCall ↶ 2191 
        ui::done("Sparse filter set to"),
75167672 Andy McCall 2192 
        ui::path(paths.join(",")),
2193 
        plural(r.written, "file"),
2194 
        r.removed
2195 
    ));
7421309f Andy McCall ↶ 2196 
    Ok(0)
2197 
}
132b884b Andy McCall ↶ 2198
2199 
pub fn tag_create(name: &str, changes: &[String], message: &str) -> Result<i32> {
2200 
    let repo = open()?;
cc7a0056 Andy McCall ↶ 2201 
    repo.snapshot_status("oxy tag")?;
132b884b Andy McCall ↶ 2202 
    let heads = if changes.is_empty() {
2203 
        repo.bookmark_heads()?
2204 
    } else {
2205 
        let mut heads = Vec::new();
2206 
        for c in changes {
2207 
            heads.extend(repo.resolve_heads(c)?);
2208 
        }
2209 
        heads
2210 
    };
2211 
    let t = repo.tag_create(name, &heads, message)?;
2212 
    println!(
94084087 Andy McCall ↶ 2213 
        "{} {} {} {} ({}){}",
2214 
        ui::done("Tagged"),
2215 
        ui::bookmark(&t.name),
2216 
        ui::dim(ui::glyph("→", "->")),
132b884b Andy McCall ↶ 2217 
        ui::hash(format!("#{}", t.state.short(12))),
2218 
        plural(t.heads.len(), "head"),
75167672 Andy McCall 2219 
        t.signer
2220 
            .map(|s| format!(", signed by {s}"))
2221 
            .unwrap_or_else(|| ui::dim(", unsigned"))
132b884b Andy McCall ↶ 2222 
    );
2223 
    Ok(0)
2224 
}
2225
1196b29b Andy McCall ↶ 2226 
pub fn tag_list(as_json: bool) -> Result<i32> {
132b884b Andy McCall ↶ 2227 
    let repo = open()?;
2228 
    let tags = repo.tags()?;
1196b29b Andy McCall ↶ 2229 
    if as_json {
2230 
        println!(
2231 
            "{}",
2232 
            json::arr(tags.iter().map(|t| {
2233 
                json::obj([
2234 
                    ("name", json::s(&t.name)),
2235 
                    ("state", json::s(&t.state.to_hex())),
2236 
                    ("heads", json::hashes(&t.heads)),
2237 
                    ("message", json::s(&t.message)),
75167672 Andy McCall 2238 
                    (
2239 
                        "signer",
2240 
                        json::opt(t.signer.as_ref(), |s| json::s(&s.to_string())),
2241 
                    ),
1196b29b Andy McCall ↶ 2242 
                ])
2243 
            }))
2244 
        );
2245 
        return Ok(0);
2246 
    }
132b884b Andy McCall ↶ 2247 
    if tags.is_empty() {
2248 
        println!("{}", ui::dim("No tags."));
2249 
    }
2250 
    for t in tags {
2251 
        println!(
94084087 Andy McCall ↶ 2252 
            "{} {} {}{}{}{}",
2253 
            ui::ok(ui::glyph("⚑", "#")),
2254 
            ui::bookmark(&t.name),
6a81dbab Andy McCall ↶ 2255 
            // The heads, as `oxy log` shows changes, not the state hash.
2256 
            ui::hash(
2257 
                t.heads
2258 
                    .iter()
2259 
                    .map(|h| format!("#{}", h.short(12)))
2260 
                    .collect::<Vec<_>>()
2261 
                    .join(" ")
2262 
            ),
94084087 Andy McCall ↶ 2263 
            ui::sep() + &ui::dim(plural(t.heads.len(), "head")),
75167672 Andy McCall 2264 
            if t.message.is_empty() {
2265 
                String::new()
2266 
            } else {
2267 
                format!("  {}", ui::subject(subject_of(&t.message)))
2268 
            },
2269 
            t.signer
2270 
                .map(|s| ui::sep() + &ui::ok(format!("{} {s}", ui::glyph("✔", "v"))))
2271 
                .unwrap_or_default()
132b884b Andy McCall ↶ 2272 
        );
2273 
    }
2274 
    Ok(0)
a46f3e4f Andy McCall ↶ 2275 
}
2276
2277 
/// Whether `name` is a bookmark, here or only on a remote: what checkout
2278 
/// and workspace add take as "be on this bookmark" (oxygen#60).
2279 
fn names_bookmark(repo: &oxy_core::repo::Repo, name: &str) -> Result<bool> {
2280 
    Ok(repo.view()?.bookmarks.contains_key(name)
2281 
        || repo
2282 
            .remote_only_bookmarks()?
2283 
            .iter()
2284 
            .any(|b| b.name == name || format!("{}/{}", b.remote, b.name) == name))
132b884b Andy McCall ↶ 2285 
}
4e88e774 Andy McCall ↶ 2286
2287 
pub fn workspace_add(path: &std::path::Path, changes: &[String]) -> Result<i32> {
2288 
    let repo = open()?;
a46f3e4f Andy McCall ↶ 2289 
    // One bookmark named: the new workspace is on it (oxygen#60), not on
2290 
    // this workspace's bookmark with that one's files.
2291 
    if let [name] = changes {
2292 
        if names_bookmark(&repo, name)? {
2293 
            let (local, _) = repo.local_bookmark_for(name)?;
2294 
            let heads = repo.resolve_heads(&local)?;
2295 
            let sp = ui::spinner(&format!("Creating workspace at {}…", path.display()));
2296 
            let ws = repo.workspace_add_on(path, Some(&heads), Some(&local))?;
2297 
            sp.done(&format!(
2298 
                "{} {} (workspace {}) on {}",
2299 
                ui::done("Workspace created at"),
2300 
                ui::path(ws.root().display()),
2301 
                ui::id(ws.workspace().short(8)),
2302 
                ui::bookmark(&local)
2303 
            ));
2304 
            return Ok(0);
2305 
        }
2306 
    }
4e88e774 Andy McCall ↶ 2307 
    let heads = if changes.is_empty() {
2308 
        None
2309 
    } else {
2310 
        let mut heads = Vec::new();
2311 
        for c in changes {
2312 
            heads.extend(repo.resolve_heads(c)?);
2313 
        }
2314 
        Some(heads)
2315 
    };
2316 
    let sp = ui::spinner(&format!("Creating workspace at {}…", path.display()));
2317 
    let ws = repo.workspace_add(path, heads.as_deref())?;
75167672 Andy McCall 2318 
    sp.done(&format!(
2319 
        "{} {} (workspace {})",
2320 
        ui::done("Workspace created at"),
2321 
        ui::path(ws.root().display()),
2322 
        ui::id(ws.workspace().short(8))
2323 
    ));
4e88e774 Andy McCall ↶ 2324 
    Ok(0)
2325 
}
2326
1196b29b Andy McCall ↶ 2327 
pub fn workspace_list(as_json: bool) -> Result<i32> {
4e88e774 Andy McCall ↶ 2328 
    let repo = open()?;
1196b29b Andy McCall ↶ 2329 
    if as_json {
2330 
        println!(
2331 
            "{}",
2332 
            json::arr(repo.workspaces()?.iter().map(|w| {
2333 
                json::obj([
2334 
                    ("id", json::s(&w.id.to_hex())),
2335 
                    ("path", json::s(&w.path.to_string_lossy())),
2336 
                    ("current", json::b(w.current)),
75167672 Andy McCall 2337 
                    (
2338 
                        "working_copy",
2339 
                        json::opt(w.working_copy, |h| json::s(&h.to_hex())),
2340 
                    ),
1196b29b Andy McCall ↶ 2341 
                ])
2342 
            }))
2343 
        );
2344 
        return Ok(0);
2345 
    }
4e88e774 Andy McCall ↶ 2346 
    for w in repo.workspaces()? {
2347 
        println!(
2348 
            "{} {} {}{}",
75167672 Andy McCall 2349 
            if w.current {
2350 
                ui::ok(ui::glyph("●", "*"))
2351 
            } else {
2352 
                ui::dim(ui::glyph("○", "o"))
2353 
            },
4e88e774 Andy McCall ↶ 2354 
            ui::id(w.id.short(8)),
2355 
            ui::path(w.path.display()),
75167672 Andy McCall 2356 
            w.working_copy
2357 
                .map(|h| ui::sep() + &ui::dim(format!("working copy #{}", h.short(12))))
2358 
                .unwrap_or_else(|| ui::sep() + &ui::warn("not in view"))
4e88e774 Andy McCall ↶ 2359 
        );
2360 
    }
2361 
    Ok(0)
2362 
}
2363
2364 
pub fn workspace_forget(spec: &str) -> Result<i32> {
2365 
    let repo = open()?;
2366 
    let all = repo.workspaces()?;
2367 
    let target = std::fs::canonicalize(spec).ok();
75167672 Andy McCall 2368 
    let matches: Vec<_> = all
2369 
        .iter()
2370 
        .filter(|w| w.id.starts_with_hex(spec) || target.as_ref().is_some_and(|t| *t == w.path))
2371 
        .collect();
4e88e774 Andy McCall ↶ 2372 
    let w = match matches.as_slice() {
2373 
        [w] => *w,
2374 
        [] => anyhow::bail!("no workspace matches {spec:?}"),
2375 
        _ => anyhow::bail!("{spec:?} is ambiguous"),
2376 
    };
2377 
    repo.workspace_forget(&w.id)?;
75167672 Andy McCall 2378 
    println!(
2379 
        "{} workspace {} at {}; its files were left in place.",
2380 
        ui::done("Forgot"),
2381 
        ui::id(w.id.short(8)),
2382 
        ui::path(w.path.display())
2383 
    );
4e88e774 Andy McCall ↶ 2384 
    Ok(0)
2385 
}
cdb5beba Andy McCall ↶ 2386
2387 
pub fn lock(path: &str) -> Result<i32> {
2388 
    let repo = open()?;
2389 
    repo.lock_path(path)?;
75167672 Andy McCall 2390 
    println!(
2391 
        "{} {} {}",
2392 
        ui::done("Locked"),
2393 
        ui::path(path),
2394 
        ui::dim("(advisory, local)")
2395 
    );
cdb5beba Andy McCall ↶ 2396 
    Ok(0)
2397 
}
2398
2399 
pub fn unlock(path: &str) -> Result<i32> {
2400 
    let repo = open()?;
2401 
    repo.unlock_path(path)?;
94084087 Andy McCall ↶ 2402 
    println!("{} {}", ui::done("Unlocked"), ui::path(path));
cdb5beba Andy McCall ↶ 2403 
    Ok(0)
2404 
}
23b217d7 Andy McCall ↶ 2405
2406 
pub fn split(change: &str, paths: &[String]) -> Result<i32> {
2407 
    let repo = open()?;
2408 
    let h = repo.resolve_change(change)?;
2409 
    let (h1, h2) = repo.split(&h, paths)?;
631fc897 Andy McCall ↶ 2410 
    let c1 = repo.store().get_change_meta(&h1)?;
2411 
    let c2 = repo.store().get_change_meta(&h2)?;
75167672 Andy McCall 2412 
    println!(
2413 
        "{} into {} {} and {} {}",
2414 
        ui::done("Split"),
631fc897 Andy McCall ↶ 2415 
        ui::id(c1.change_id.short(8)),
75167672 Andy McCall 2416 
        ui::hash(format!("#{}", h1.short(12))),
631fc897 Andy McCall ↶ 2417 
        ui::id(c2.change_id.short(8)),
75167672 Andy McCall 2418 
        ui::hash(format!("#{}", h2.short(12)))
2419 
    );
23b217d7 Andy McCall ↶ 2420 
    Ok(0)
2421 
}
7b9809e6 Andy McCall ↶ 2422
2423 
fn heads_from(repo: &Repo, changes: &[String]) -> Result<Vec<oxy_core::hash::ChangeHash>> {
2424 
    let mut heads = Vec::new();
2425 
    for c in changes {
2426 
        heads.extend(repo.resolve_heads(c)?);
2427 
    }
2428 
    Ok(heads)
2429 
}
2430
4fe7d604 Andy McCall ↶ 2431 
pub fn bookmark_create(name: &str, changes: &[String], upto: bool, only: bool) -> Result<i32> {
7b9809e6 Andy McCall ↶ 2432 
    let repo = open()?;
cc7a0056 Andy McCall ↶ 2433 
    repo.snapshot_status("oxy bookmark create")?;
75167672 Andy McCall 2434 
    let heads = if changes.is_empty() {
2435 
        None
2436 
    } else {
4fe7d604 Andy McCall ↶ 2437 
        let named = heads_from(&repo, changes)?;
2438 
        let (_, wc) = repo.working_copy()?;
2439 
        let gap = repo.state_gap(&wc.deps, &named)?;
2440 
        if upto {
2441 
            Some(gap.upto)
2442 
        } else if only || gap.earlier.is_empty() {
2443 
            Some(named)
2444 
        } else {
2445 
            anyhow::bail!(
2446 
                "{name} at {} would lack {} of the current state recorded before it:\n{}\n\
2447 
                 A state is its heads and what they depend on, not everything recorded before them.\n\
2448 
                 Pass --upto for everything of the current state up to {0} (as a Git branch would hold),\n\
2449 
                 or --only for just {0} and what it depends on.",
2450 
                changes.join(" "),
2451 
                plural(gap.earlier.len(), "change"),
2452 
                listed_changes(&repo, &gap.earlier)
2453 
            );
2454 
        }
75167672 Andy McCall 2455 
    };
7b9809e6 Andy McCall ↶ 2456 
    let heads = repo.bookmark_create(name, heads.as_deref())?;
75167672 Andy McCall 2457 
    println!(
2458 
        "{} bookmark {} {} {}",
2459 
        ui::done("Created"),
2460 
        ui::bookmark(name),
2461 
        ui::dim(ui::glyph("→", "->")),
2462 
        ui::dim(plural(heads.len(), "head"))
2463 
    );
2464 
    println!(
2465 
        "  {} {}",
2466 
        ui::note(),
2467 
        ui::dim(format!("switch to it with oxy bookmark switch {name}"))
2468 
    );
7b9809e6 Andy McCall ↶ 2469 
    Ok(0)
2470 
}
2471
4fe7d604 Andy McCall ↶ 2472 
/// Up to five changes, newest last, as `  #hash subject` lines.
2473 
fn listed_changes(repo: &Repo, changes: &[oxy_core::hash::ChangeHash]) -> String {
2474 
    let shown = changes.len().min(5);
2475 
    let mut lines: Vec<String> = changes[changes.len() - shown..]
2476 
        .iter()
2477 
        .map(|h| {
2478 
            let subject = repo
2479 
                .store()
2480 
                .get_change(h)
2481 
                .map(|c| subject_of(&c.message).to_string())
2482 
                .unwrap_or_default();
2483 
            format!("  #{} {subject}", h.short(12))
2484 
        })
2485 
        .collect();
2486 
    if changes.len() > shown {
2487 
        lines.insert(0, format!("  … and {} earlier", changes.len() - shown));
2488 
    }
2489 
    lines.join("\n")
2490 
}
2491
06d16dc2 Andy McCall ↶ 2492 
pub fn bookmark_set(name: &str, changes: &[String], upto: bool, only: bool) -> Result<i32> {
7b9809e6 Andy McCall ↶ 2493 
    let repo = open()?;
cc7a0056 Andy McCall ↶ 2494 
    repo.snapshot_status("oxy bookmark set")?;
06d16dc2 Andy McCall ↶ 2495 
    let named = heads_from(&repo, changes)?;
2496 
    // What the bookmark holds now and the new heads would leave out.
2497 
    let current = repo
2498 
        .bookmarks()?
2499 
        .into_iter()
2500 
        .find(|b| b.name == name)
2501 
        .map(|b| b.heads)
2502 
        .ok_or_else(|| anyhow::anyhow!("no bookmark {name}"))?;
2503 
    let gap = repo.state_gap(&current, &named)?;
4afab467 Andy McCall ↶ 2504 
    // A fast-forward: the new heads hold the bookmark's newest head, so
2505 
    // what they leave out is older work nothing since has built on, such
2506 
    // as an early change no later one depends on (oxygen#78). Keep it, as
2507 
    // --upto does, and say so.
2508 
    let newest = current
2509 
        .iter()
2510 
        .filter_map(|h| repo.store().get_change_meta(h).ok().map(|m| (m.hlc, *h)))
2511 
        .max()
2512 
        .map(|(_, h)| h);
2513 
    // Ahead, too: a head the bookmark holds already (it would only drop
2514 
    // the others) is not a move forward.
2515 
    let ahead = repo
2516 
        .load_state_history(&current)
2517 
        .is_ok_and(|st| named.iter().any(|h| !st.contains(h)));
2518 
    let forward = !only
2519 
        && ahead
2520 
        && !gap.earlier.is_empty()
2521 
        && newest.is_some_and(|n| {
2522 
            repo.load_state_history(&named)
2523 
                .is_ok_and(|st| st.contains(&n))
2524 
        });
06d16dc2 Andy McCall ↶ 2525 
    let heads = if upto {
4afab467 Andy McCall ↶ 2526 
        gap.upto
2527 
    } else if forward {
2528 
        println!(
2529 
            "  {} {}",
2530 
            ui::note(),
2531 
            ui::dim(format!(
2532 
                "{} builds on {name}'s newest head; keeping {} it holds that {0} does not depend on",
2533 
                changes.join(" "),
2534 
                plural(gap.earlier.len(), "change")
2535 
            ))
2536 
        );
06d16dc2 Andy McCall ↶ 2537 
        gap.upto
2538 
    } else if only || gap.earlier.is_empty() {
2539 
        named
2540 
    } else {
2541 
        anyhow::bail!(
2542 
            "{name} at {} would lose {} it holds now, recorded before it:\n{}\n\
2543 
             A state is its heads and what they depend on, not everything recorded before them.\n\
2544 
             Pass --upto to keep everything {name} holds up to {0} (as a Git branch would),\n\
2545 
             or --only for just {0} and what it depends on.",
2546 
            changes.join(" "),
2547 
            plural(gap.earlier.len(), "change"),
2548 
            listed_changes(&repo, &gap.earlier)
2549 
        );
2550 
    };
7b9809e6 Andy McCall ↶ 2551 
    let heads = repo.bookmark_set(name, &heads)?;
75167672 Andy McCall 2552 
    println!(
2553 
        "{} bookmark {} {} {}",
2554 
        ui::done("Moved"),
2555 
        ui::bookmark(name),
2556 
        ui::dim(ui::glyph("→", "->")),
2557 
        ui::dim(plural(heads.len(), "head"))
2558 
    );
7b9809e6 Andy McCall ↶ 2559 
    Ok(0)
2560 
}
2561
2562 
pub fn bookmark_delete(name: &str) -> Result<i32> {
2563 
    let repo = open()?;
2564 
    repo.bookmark_delete(name)?;
75167672 Andy McCall 2565 
    println!(
2566 
        "{} bookmark {} {}",
2567 
        ui::done("Deleted"),
2568 
        ui::bookmark(name),
2569 
        ui::dim("(its changes stay until unreachable)")
2570 
    );
7b9809e6 Andy McCall ↶ 2571 
    Ok(0)
2572 
}
2573
bf3a6781 Andy McCall ↶ 2574 
/// Heads with their metadata, newest first.
2575 
fn heads_newest_first(
2576 
    repo: &Repo,
2577 
    heads: &[oxy_core::hash::ChangeHash],
2578 
) -> Vec<(oxy_core::hash::ChangeHash, oxy_core::state::ChangeMeta)> {
2579 
    let mut out: Vec<_> = heads
2580 
        .iter()
2581 
        .filter_map(|h| repo.store().get_change_meta(h).ok().map(|m| (*h, m)))
2582 
        .collect();
2583 
    out.sort_by_key(|(_, m)| std::cmp::Reverse(m.hlc));
2584 
    out
2585 
}
2586
2587 
/// One head as a line: id, hash, author, when, subject.
2588 
fn print_head(
2589 
    repo: &Repo,
2590 
    indent: &str,
2591 
    h: &oxy_core::hash::ChangeHash,
2592 
    m: &oxy_core::state::ChangeMeta,
2593 
) {
2594 
    println!(
2595 
        "{indent}{} {} {}{}{}{}{}",
2596 
        ui::id(m.change_id.short(8)),
2597 
        ui::dim(format!("#{}", &h.to_hex()[..8])),
2598 
        author_name(repo, m),
2599 
        ui::sep(),
2600 
        ui::dim(ui::ago(m.hlc.wall_ms)),
2601 
        ui::sep(),
2602 
        ui::subject(subject_of(&m.message))
2603 
    );
2604 
}
2605
2606 
pub fn bookmark_show(name: Option<&str>, as_json: bool) -> Result<i32> {
7b9809e6 Andy McCall ↶ 2607 
    let repo = open()?;
bf3a6781 Andy McCall ↶ 2608 
    let name = name.unwrap_or(&repo.config.bookmark).to_string();
2609 
    let view = repo.view()?;
2610 
    let st = match view.bookmarks.get(&name) {
2611 
        Some(st) => *st,
2612 
        None => match oxy_core::repo::remote_bookmark(&view, &name) {
2613 
            Some((_, _, st)) => st,
2614 
            None => anyhow::bail!("no bookmark {name}: oxy bookmark list --all lists them"),
2615 
        },
2616 
    };
2617 
    let heads = repo.store().get_state(&st)?.heads;
2618 
    let shown = heads_newest_first(&repo, &heads);
2619 
    if as_json {
2620 
        println!(
2621 
            "{}",
2622 
            json::obj([
2623 
                ("name", json::s(&name)),
2624 
                ("current", json::b(name == repo.config.bookmark)),
2625 
                (
2626 
                    "heads",
2627 
                    json::arr(shown.iter().map(|(h, m)| {
2628 
                        json::obj([
2629 
                            ("hash", json::s(&h.to_hex())),
2630 
                            ("id", json::s(&m.change_id.to_string())),
2631 
                            ("author", json::s(&author_name(&repo, m))),
2632 
                            ("time_ms", json::n(m.hlc.wall_ms)),
2633 
                            ("subject", json::s(subject_of(&m.message))),
2634 
                        ])
2635 
                    }))
2636 
                ),
2637 
            ])
2638 
        );
2639 
        return Ok(0);
2640 
    }
2641 
    println!(
2642 
        "{} {}{}{}",
2643 
        ui::ok(ui::glyph("●", "*")),
2644 
        ui::bookmark(&name),
2645 
        ui::sep(),
2646 
        ui::dim(plural(heads.len(), "head"))
2647 
    );
2648 
    for (h, m) in &shown {
2649 
        print_head(&repo, "  ", h, m);
2650 
    }
2651 
    if heads.len() > 1 {
2652 
        println!(
2653 
            "  {}",
2654 
            ui::dim("None depends on another: the bookmark is all of them and their dependencies.")
2655 
        );
2656 
    }
2657 
    Ok(0)
2658 
}
2659
2660 
pub fn bookmark_list(all: bool, verbose: bool, as_json: bool) -> Result<i32> {
2661 
    let repo = open()?;
14edbaaf Andy McCall ↶ 2662 
    let remote_only = repo.remote_only_bookmarks()?;
c6aa5bd9 Andy McCall ↶ 2663 
    if as_json {
14edbaaf Andy McCall ↶ 2664 
        let mut items: Vec<String> = repo
2665 
            .bookmarks()?
2666 
            .into_iter()
2667 
            .map(|b| {
2668 
                json::obj([
2669 
                    ("name", json::s(&b.name)),
2670 
                    ("heads", json::hashes(&b.heads)),
2671 
                    ("current", json::b(b.current)),
2672 
                    ("ahead", json::opt(b.ahead, json::n)),
2673 
                    ("behind", json::opt(b.behind, json::n)),
42ccf504 Andy McCall ↶ 2674 
                    ("remote", json::opt(b.remote.as_deref(), json::s)),
14edbaaf Andy McCall ↶ 2675 
                ])
2676 
            })
2677 
            .collect();
2678 
        if all {
2679 
            items.extend(remote_only.iter().map(|b| {
2680 
                json::obj([
2681 
                    ("name", json::s(&format!("{}/{}", b.remote, b.name))),
2682 
                    ("heads", json::hashes(&b.heads)),
2683 
                    ("current", json::b(false)),
2684 
                    ("ahead", "null".into()),
2685 
                    ("behind", "null".into()),
2686 
                    ("remote", json::s(&b.remote)),
2687 
                ])
2688 
            }));
2689 
        }
c6aa5bd9 Andy McCall ↶ 2690 
        println!("{}", json::arr(items));
2691 
        return Ok(0);
2692 
    }
7b9809e6 Andy McCall ↶ 2693 
    for b in repo.bookmarks()? {
75167672 Andy McCall 2694 
        let mark = if b.current {
2695 
            ui::ok(ui::glyph("●", "*"))
2696 
        } else {
2697 
            ui::dim(ui::glyph("○", "o"))
2698 
        };
7b9809e6 Andy McCall ↶ 2699 
        let mut tail = String::new();
2700 
        if let Some(n) = b.ahead.filter(|n| *n > 0) {
2701 
            tail += &ui::ok(format!(" {}{n}", ui::glyph("↑", "+")));
2702 
        }
2703 
        if let Some(n) = b.behind.filter(|n| *n > 0) {
2704 
            tail += &ui::warn(format!(" {}{n}", ui::glyph("↓", "-")));
2705 
        }
42ccf504 Andy McCall ↶ 2706 
        // Which remote, when there is a choice (oxygen#83).
2707 
        if !tail.is_empty() && repo.config.remotes.len() > 1 {
2708 
            if let Some(r) = &b.remote {
2709 
                tail += &ui::dim(format!(" {r}"));
2710 
            }
2711 
        }
bf3a6781 Andy McCall ↶ 2712 
        let shown = heads_newest_first(&repo, &b.heads);
2713 
        // The newest head's subject, so a busy bookmark shows its latest work.
2714 
        let head = match shown.first() {
2715 
            Some(_) if verbose => String::new(),
2716 
            Some((_, m)) if b.heads.len() > 1 => format!(
2717 
                "{} {}",
2718 
                ui::dim("newest"),
2719 
                ui::subject(subject_of(&m.message))
2720 
            ),
2721 
            Some((_, m)) => ui::subject(subject_of(&m.message)),
2722 
            None => ui::dim("(empty)"),
2723 
        };
2724 
        let head = if head.is_empty() {
2725 
            head
2726 
        } else {
2727 
            format!("  {head}")
2728 
        };
75167672 Andy McCall 2729 
        println!(
bf3a6781 Andy McCall ↶ 2730 
            "{mark} {}{}{}{tail}{head}",
75167672 Andy McCall 2731 
            ui::bookmark(&b.name),
14edbaaf Andy McCall ↶ 2732 
            ui::sep(),
2733 
            ui::dim(plural(b.heads.len(), "head"))
2734 
        );
bf3a6781 Andy McCall ↶ 2735 
        if verbose {
2736 
            for (h, m) in &shown {
2737 
                print_head(&repo, "    ", h, m);
2738 
            }
2739 
        }
14edbaaf Andy McCall ↶ 2740 
    }
2741 
    if remote_only.is_empty() {
2742 
        return Ok(0);
2743 
    }
2744 
    if !all {
2745 
        println!(
2746 
            "{}",
2747 
            ui::dim(format!(
2748 
                "  and {} only on a remote: oxy bookmark list --all",
2749 
                plural(remote_only.len(), "bookmark")
2750 
            ))
2751 
        );
2752 
        return Ok(0);
2753 
    }
2754 
    for b in &remote_only {
2755 
        println!(
2756 
            "{} {}{}{}",
2757 
            ui::dim(ui::glyph("◌", ".")),
2758 
            ui::dim(format!("{}/{}", b.remote, b.name)),
75167672 Andy McCall 2759 
            ui::sep(),
2760 
            ui::dim(plural(b.heads.len(), "head"))
2761 
        );
7b9809e6 Andy McCall ↶ 2762 
    }
14edbaaf Andy McCall ↶ 2763 
    println!(
2764 
        "  {} {}",
2765 
        ui::note(),
2766 
        ui::dim("oxy bookmark switch NAME makes a local bookmark from a remote's")
2767 
    );
7b9809e6 Andy McCall ↶ 2768 
    Ok(0)
2769 
}
2770
61e3bce7 Andy McCall ↶ 2771 
pub fn bookmark_switch(name: &str, discard: bool, carry: bool) -> Result<i32> {
7b9809e6 Andy McCall ↶ 2772 
    let mut repo = open()?;
4fe7d604 Andy McCall ↶ 2773 
    let from = repo.config.bookmark.clone();
14edbaaf Andy McCall ↶ 2774 
    let (local, created_from) = repo.local_bookmark_for(name)?;
2775 
    if let Some(remote) = created_from {
2776 
        println!(
2777 
            "{} {} from {}",
2778 
            ui::done("Created"),
2779 
            ui::bookmark(&local),
2780 
            ui::dim(format!("{remote}/{local}"))
2781 
        );
2782 
    }
2783 
    let name = local.as_str();
72484195 Andy McCall ↶ 2784 
    // Only behind its remote: take the remote's state, so the switch does
2785 
    // not check out a stale one (oxygen#74).
2786 
    if let Some(n) = repo.catch_up_bookmark(name)? {
2787 
        println!(
2788 
            "{} {} with {}: {} it lacked",
2789 
            ui::done("Caught up"),
2790 
            ui::bookmark(name),
2791 
            ui::dim(format!("{}/{name}", repo.default_remote())),
2792 
            plural(n, "change")
2793 
        );
2794 
    }
7b9809e6 Andy McCall ↶ 2795 
    let sp = ui::spinner(&format!("Switching to {name}…"));
61e3bce7 Andy McCall ↶ 2796 
    let (r, carried) = if carry {
2797 
        repo.bookmark_switch_carry(name)?
2798 
    } else {
2799 
        (repo.bookmark_switch(name, discard)?, vec![])
2800 
    };
75167672 Andy McCall 2801 
    sp.done(&format!(
61e3bce7 Andy McCall ↶ 2802 
        "{} to {}: {} written, {} removed{}",
75167672 Andy McCall 2803 
        ui::done("Switched"),
2804 
        ui::bookmark(name),
2805 
        plural(r.written, "file"),
61e3bce7 Andy McCall ↶ 2806 
        r.removed,
2807 
        if carried.is_empty() {
2808 
            String::new()
2809 
        } else {
2810 
            format!("; carried {}", plural(carried.len(), "changed path"))
2811 
        }
75167672 Andy McCall 2812 
    ));
9b723f69 Andy McCall ↶ 2813 
    print_removed(&r);
7b9809e6 Andy McCall ↶ 2814 
    if r.conflicted {
75167672 Andy McCall 2815 
        println!(
2816 
            "  {} {}",
2817 
            ui::caution(),
2818 
            ui::warn("this state has conflicts; see oxy status")
2819 
        );
4fe7d604 Andy McCall ↶ 2820 
    }
2821 
    // Say when the new state leaves out work the old one had: a state is
2822 
    // its heads and what they depend on, which can be far less than a Git
2823 
    // user expects.
d3cd7ef9 Andy McCall ↶ 2824 
    if r.lacks > 0 {
2825 
        println!(
2826 
            "  {} {}",
2827 
            ui::note(),
2828 
            ui::dim(format!(
2829 
                "{name} lacks {} that {from} has",
2830 
                plural(r.lacks, "change")
2831 
            ))
2832 
        );
7b9809e6 Andy McCall ↶ 2833 
    }
14edbaaf Andy McCall ↶ 2834 
    super::sync::subrepos_behind(&repo);
98a1620a Andy McCall ↶ 2835 
    where_now(&repo);
7b9809e6 Andy McCall ↶ 2836 
    Ok(0)
2837 
}
2838
2839 
pub fn merge(bookmark: &str) -> Result<i32> {
2840 
    let repo = open()?;
2841 
    let sp = ui::spinner(&format!("Merging {bookmark}…"));
2842 
    let r = repo.merge(bookmark)?;
2843 
    if !r.changed {
75167672 Andy McCall 2844 
        sp.done(&format!(
2845 
            "{} {}",
2846 
            ui::ok(ui::glyph("✔", "*")),
2847 
            ui::dim(format!(
2848 
                "{} already contains {bookmark}",
2849 
                repo.config.bookmark
2850 
            ))
2851 
        ));
7b9809e6 Andy McCall ↶ 2852 
        return Ok(0);
2853 
    }
2854 
    sp.done(&format!(
2855 
        "{} {} into {}: now {}{}",
2856 
        ui::done("Merged"),
2857 
        ui::bookmark(bookmark),
2858 
        ui::bookmark(&repo.config.bookmark),
2859 
        plural(r.heads.len(), "head"),
75167672 Andy McCall 2860 
        ui::dim(if r.checked_out {
2861 
            "; working copy updated"
2862 
        } else {
2863 
            "; run oxy checkout to update the working copy"
2864 
        })
7b9809e6 Andy McCall ↶ 2865 
    ));
2866 
    let snap = repo.snapshot("oxy merge")?;
2867 
    if snap.base_snapshot.is_conflicted() {
75167672 Andy McCall 2868 
        println!(
2869 
            "  {} {}",
2870 
            ui::caution(),
2871 
            ui::warn("the result has conflicts; see oxy status")
2872 
        );
7b9809e6 Andy McCall ↶ 2873 
    }
98a1620a Andy McCall ↶ 2874 
    where_now(&repo);
7b9809e6 Andy McCall ↶ 2875 
    Ok(0)
2876 
}
2877
728da0f9 Andy McCall ↶ 2878 
pub fn squash(change: &str, into: &str) -> Result<i32> {
2879 
    let repo = open()?;
2880 
    let c = repo.resolve_change(change)?;
2881 
    let d = repo.resolve_change(into)?;
2882 
    let sp = ui::spinner("Squashing…");
2883 
    let h = repo.squash(&c, &d)?;
631fc897 Andy McCall ↶ 2884 
    let new = repo.store().get_change_meta(&h)?;
75167672 Andy McCall 2885 
    sp.done(&format!(
2886 
        "{} into {} {}  {}",
2887 
        ui::done("Squashed"),
631fc897 Andy McCall ↶ 2888 
        ui::id(new.change_id.short(8)),
75167672 Andy McCall 2889 
        ui::hash(format!("#{}", h.short(12))),
2890 
        ui::subject(subject_of(&new.message))
2891 
    ));
728da0f9 Andy McCall ↶ 2892 
    Ok(0)
2893 
}
2894
e266b7d4 Andy McCall ↶ 2895 
pub fn rebase(change: &str, onto: &[String], into_working_copy: bool) -> Result<i32> {
728da0f9 Andy McCall ↶ 2896 
    let repo = open()?;
2897 
    let c = repo.resolve_change(change)?;
2898 
    let mut heads = Vec::new();
2899 
    for o in onto {
2900 
        heads.extend(repo.resolve_heads(o)?);
2901 
    }
2902 
    let sp = ui::spinner("Rebasing…");
e266b7d4 Andy McCall ↶ 2903 
    let h = match repo.rebase(&c, &heads) {
2904 
        Err(oxy_core::repo::RepoError::Conflicted(_)) if into_working_copy => {
2905 
            let r = repo.rebase_into_working_copy(&c, &heads)?;
2906 
            sp.done(&format!(
2907 
                "{} {} into {}: now {}",
2908 
                ui::done("Merged"),
2909 
                onto.join(" "),
2910 
                ui::bookmark(&repo.config.bookmark),
2911 
                plural(r.heads.len(), "head"),
2912 
            ));
2913 
            if r.checked_out {
2914 
                println!(
2915 
                    "  {} {}",
2916 
                    ui::caution(),
2917 
                    ui::warn("the conflict is in the working copy: fix the marked files (see oxy status), then oxy commit")
2918 
                );
2919 
            } else {
2920 
                println!(
2921 
                    "  {} {}",
2922 
                    ui::caution(),
2923 
                    ui::warn("the working copy has changes of its own: commit or discard them, then oxy checkout to take the conflict in")
2924 
                );
2925 
            }
98a1620a Andy McCall ↶ 2926 
            where_now(&repo);
e266b7d4 Andy McCall ↶ 2927 
            return Ok(0);
2928 
        }
2929 
        other => other?,
2930 
    };
631fc897 Andy McCall ↶ 2931 
    let new = repo.store().get_change_meta(&h)?;
75167672 Andy McCall 2932 
    sp.done(&format!(
2933 
        "{} {} {}  {}",
2934 
        ui::done("Rebased"),
631fc897 Andy McCall ↶ 2935 
        ui::id(new.change_id.short(8)),
75167672 Andy McCall 2936 
        ui::hash(format!("#{}", h.short(12))),
2937 
        ui::dim(format!(
2938 
            "now depends on {}",
2939 
            plural(new.deps.len(), "change")
2940 
        ))
2941 
    ));
98a1620a Andy McCall ↶ 2942 
    where_now(&repo);
728da0f9 Andy McCall ↶ 2943 
    Ok(0)
79b5a90f Andy McCall ↶ 2944 
}
2945
2946 
#[cfg(test)]
2947 
mod tests {
2948 
    use super::*;
2949
2950 
    #[test]
2951 
    fn id_prefixes_agree_with_the_whole_list() {
2952 
        // Ids that share long prefixes, and some that differ only in a
2953 
        // half byte, from a fixed sequence.
2954 
        let mut x: u64 = 0x9e37_79b9_7f4a_7c15;
2955 
        let mut next = || {
2956 
            x ^= x << 13;
2957 
            x ^= x >> 7;
2958 
            x ^= x << 17;
2959 
            x
2960 
        };
2961 
        let mut ids: Vec<[u8; 16]> = Vec::new();
2962 
        for _ in 0..2000 {
2963 
            let mut id = [0u8; 16];
2964 
            id[..8].copy_from_slice(&next().to_le_bytes());
2965 
            id[8..].copy_from_slice(&next().to_le_bytes());
2966 
            let share = (next() % 4) as usize;
2967 
            if let Some(prev) = ids.last() {
2968 
                id[..share].copy_from_slice(&prev[..share]);
2969 
                if next() % 2 == 0 {
2970 
                    id[share] = (prev[share] & 0xf0) | (id[share] & 0x0f);
2971 
                }
2972 
            }
2973 
            ids.push(id);
2974 
        }
2975 
        let hex = |id: &[u8; 16]| oxy_core::ids::ChangeId(*id).to_hex();
2976 
        let whole = unique_prefixes(ids.iter().map(hex));
2977 
        let some = id_prefixes(ids.clone(), ids.iter().copied());
2978 
        for id in &ids {
2979 
            assert_eq!(some[id], whole[&hex(id)], "{}", hex(id));
2980 
        }
2981 
    }
728da0f9 Andy McCall ↶ 2982 
}