refactor(git): split watcher out of repo

This commit is contained in:
2026-04-30 17:16:21 +02:00
parent 8e6b13a7a3
commit 7fa05d4895
3 changed files with 211 additions and 205 deletions
+206
View File
@@ -0,0 +1,206 @@
local repo = require("git.repo")
local util = require("git.util")
local M = {}
---@param code string
---@return string?
local function format(code)
local char, hl = repo.indicator(code)
if not char then
return nil
end
return string.format("%%#%s#%s%%*", hl, char)
end
---@class ow.Git.Repo
---@field gitdir string
---@field worktree string
---@field buffers table<integer, true>
---@field watcher? uv.uv_fs_event_t
---@field refresh fun(self: ow.Git.Repo)
---@field refresh_handle ow.Git.Util.DebounceHandle
local Repo = {}
Repo.__index = Repo
function Repo:start_watcher()
local watcher = assert(vim.uv.new_fs_event())
assert(watcher:start(self.gitdir, {}, function(err, filename)
if err or (filename ~= "index" and filename ~= "HEAD") then
return
end
self:refresh()
end))
self.watcher = watcher
end
function Repo:stop_watcher()
-- Stop the libuv watcher first so no further fs-events can trigger
-- self:refresh(). Tearing down the debounce handle first leaves a
-- window where an in-flight watcher callback hits a closed timer.
if self.watcher then
self.watcher:stop()
self.watcher:close()
self.watcher = nil
end
self.refresh_handle.close()
end
---@param buf integer
function Repo:add_buffer(buf)
self.buffers[buf] = true
end
---@param buf integer
function Repo:remove_buffer(buf)
self.buffers[buf] = nil
end
---@return boolean
function Repo:has_buffers()
return next(self.buffers) ~= nil
end
---@param r ow.Git.Repo
local function do_refresh(r)
vim.system(
{
"git",
"-c",
"core.quotePath=false",
"status",
"--porcelain=v1",
"--branch",
},
{ cwd = r.worktree, text = true },
vim.schedule_wrap(function(obj)
local statuses = {}
if obj.code == 0 then
for line in (obj.stdout or ""):gmatch("[^\r\n]+") do
if line:sub(1, 2) ~= "##" then
local code = line:sub(1, 2)
local x = code:sub(1, 1)
local y = code:sub(2, 2)
local path_part = line:sub(4)
if x == "R" or x == "C" or y == "R" or y == "C" then
local arrow = path_part:find(" -> ", 1, true)
if arrow then
path_part = path_part:sub(arrow + 4)
end
end
statuses[vim.fs.joinpath(r.worktree, path_part)] =
format(code)
end
end
else
util.warning(
"git status failed: %s",
vim.trim(obj.stderr or "")
)
end
local dirty = false
for buf in pairs(r.buffers) do
if not vim.api.nvim_buf_is_valid(buf) then
r.buffers[buf] = nil
else
local status = statuses[vim.api.nvim_buf_get_name(buf)]
if vim.b[buf].git_status ~= status then
vim.b[buf].git_status = status
dirty = true
end
end
end
if dirty then
vim.cmd.redrawstatus({ bang = true })
end
vim.api.nvim_exec_autocmds("User", {
pattern = "GitRefresh",
data = {
gitdir = r.gitdir,
worktree = r.worktree,
porcelain_stdout = obj.code == 0 and obj.stdout or nil,
},
})
end)
)
end
---@param gitdir string
---@param worktree string
---@return ow.Git.Repo
function Repo.new(gitdir, worktree)
local self = setmetatable({
gitdir = gitdir,
worktree = worktree,
buffers = {},
}, Repo)
self.refresh, self.refresh_handle = util.debounce(do_refresh, 50)
self:start_watcher()
return self
end
---@type table<string, ow.Git.Repo>
local repo_by_gitdir = {}
---@type table<integer, ow.Git.Repo>
local repo_by_buf = {}
---@param buf integer
---@return ow.Git.Repo?
local function register(buf)
local existing = repo_by_buf[buf]
if existing then
return existing
end
local path = vim.api.nvim_buf_get_name(buf)
if path == "" then
return nil
end
local gitdir, worktree = repo.resolve(path)
if not gitdir or not worktree then
return nil
end
local r = repo_by_gitdir[gitdir]
if not r then
r = Repo.new(gitdir, worktree)
repo_by_gitdir[gitdir] = r
end
r:add_buffer(buf)
repo_by_buf[buf] = r
return r
end
---@param buf integer
function M.unregister(buf)
local r = repo_by_buf[buf]
if not r then
return
end
repo_by_buf[buf] = nil
r:remove_buffer(buf)
if not r:has_buffers() then
r:stop_watcher()
repo_by_gitdir[r.gitdir] = nil
end
end
---@param buf integer
function M.refresh_buf(buf)
if not vim.api.nvim_buf_is_valid(buf) or vim.bo[buf].buftype ~= "" then
return
end
local r = register(buf)
if not r then
vim.b[buf].git_status = nil
return
end
r:refresh()
end
function M.stop_all()
for _, r in pairs(repo_by_gitdir) do
r:stop_watcher()
end
end
return M