feat: new git.yazi plugin

git.yazi/README.md

@@ -0,0 +1,32 @@
+# git.yazi
+
+Show Git file changes as linemode in the file list.
+
+## Installation
+
+```sh
+ya pack -a yazi-rs/plugins:git
+```
+
+## Setup
+
+Add the following to your `~/.config/yazi/init.lua`:
+
+```lua
+require("git"):setup {
+}
+```
+
+And register it as fetchers in your `~/.config/yazi/yazi.toml`:
+
+```toml
+[[plugin.prepend_fetchers]]
+id   = "git"
+name = "*"
+run  = "git"
+
+[[plugin.prepend_fetchers]]
+id   = "git"
+name = "*/"
+run  = "git"
+```

git.yazi/init.lua

@@ -0,0 +1,122 @@
+local PATS = {
+	{ "!$", "." }, -- Ignored
+	{ "?$", "?" }, -- Untracked
+	{ "U", "U" }, -- Updated
+	{ "[AD][AD]", "U" }, -- Updated
+	{ "[MT]", "M" }, -- Modified
+	{ "[AC]", "A" }, -- Added
+}
+
+local PRIOS = {
+	[""] = 1,
+	["."] = 2,
+	["?"] = 3,
+	["U"] = 4,
+	["M"] = 5,
+	["A"] = 6,
+}
+
+local function match(s)
+	for _, p in ipairs(PATS) do
+		if s:find(p[1]) then
+			return p[2]
+		end
+	end
+end
+
+local function root(cwd)
+	repeat
+		local cha = fs.cha(cwd:join(".git"))
+		if cha and cha.is_dir then
+			return string.format("%s%s", cwd, ya.target_family() == "windows" and "\\" or "/")
+		end
+		cwd = cwd:parent()
+	until not cwd
+end
+
+local save = ya.sync(function(st, states)
+	st.states = st.states or {}
+	for k, v in pairs(states) do
+		st.states[k] = v ~= "" and v or nil
+	end
+	ya.render()
+end)
+
+local function setup(st, opts)
+	st.states = {}
+	local styles = {
+		["."] = THEME.git_ignored and ui.Style(THEME.git_ignored) or ui.Style():fg("gray"),
+		["?"] = THEME.git_staged and ui.Style(THEME.git_staged) or ui.Style():fg("yellow"),
+		["U"] = THEME.git_untracked and ui.Style(THEME.git_untracked) or ui.Style():fg("blue"),
+		["M"] = THEME.git_modified and ui.Style(THEME.git_modified) or ui.Style():fg("red"),
+		["A"] = THEME.git_deleted and ui.Style(THEME.git_deleted) or ui.Style():fg("green"),
+	}
+
+	Linemode:children_add(function(self)
+		local state = st.states[tostring(self._file.url)]
+		if state then
+			return ui.Line { ui.Span(" "), ui.Span(state):style(styles[state]), ui.Span(" ") }
+		else
+			return ui.Line {}
+		end
+	end, 5000)
+end
+
+local function fetch(self)
+	local paths = {}
+	for _, file in ipairs(self.files) do
+		paths[#paths + 1] = tostring(file.url)
+	end
+
+	local cwd = self.files[1].url:parent()
+	local output, err = Command("git")
+		:cwd(tostring(cwd))
+		:args({ "-c", "core.quotePath=", "status", "--porcelain", "-unormal", "--no-renames", "--ignored=matching" })
+		:args(paths)
+		:stdout(Command.PIPED)
+		:output()
+	if not output then
+		ya.err("Cannot spawn git command, error code " .. tostring(err))
+		return 0
+	end
+
+	local prefix = root(cwd)
+	if not prefix then
+		return 1
+	end
+
+	local states = {}
+	for line in output.stdout:gmatch("[^\r\n]+") do
+		local s = match(line:sub(1, 2))
+		if s and line:find("[/\\]$") then
+			states[prefix .. line:sub(4, -2)] = s
+		else
+			states[prefix .. line:sub(4)] = s
+		end
+	end
+
+	prefix = Url(prefix)
+	if self.files[1].cha.is_dir then
+		local parents = {}
+		for k, v in pairs(states) do
+			local url = Url(k):parent()
+			while url and url ~= prefix do
+				local s = tostring(url)
+				parents[s] = (PRIOS[parents[s]] or 0) > PRIOS[v] and parents[s] or v
+				url = url:parent()
+			end
+		end
+		for k, v in pairs(parents) do
+			states[k] = v
+		end
+	end
+
+	for _, p in ipairs(paths) do
+		states[p] = states[p] or ""
+	end
+	save(states)
+
+	return 3
+end
+
+return { setup = setup, fetch = fetch }