chore: initial commit

lua/git/log_view.lua

@@ -0,0 +1,143 @@
+local repo = require("git.core.repo")
+local util = require("git.core.util")
+
+local M = {}
+
+local LOG_FORMAT = "%h %ad {%an}%d %s"
+
+local cr = vim.api.nvim_replace_termcodes("<CR>", true, false, true)
+
+---@param buf integer
+---@return boolean opened
+local function open_under_cursor(buf)
+    local r = repo.resolve(buf)
+    -- Anchor past the leading graph chars (matches the leading sha column,
+    -- not any hex word that happens to appear later in the subject).
+    local sha = r
+        and vim.api.nvim_get_current_line():match("^[*|/\\_ ]*(%x%x%x%x%x%x%x+)")
+    if not sha then
+        return false
+    end
+    ---@cast r -nil
+    require("git.object").open(r, sha, { split = false })
+    return true
+end
+
+---@param buf integer
+local function attach_dispatch(buf)
+    vim.keymap.set("n", "<CR>", function()
+        if not open_under_cursor(buf) then
+            vim.api.nvim_feedkeys(cr, "n", false)
+        end
+    end, { buffer = buf, silent = true, desc = "Open commit" })
+    vim.keymap.set("n", "gd", function()
+        open_under_cursor(buf)
+    end, { buffer = buf, silent = true, desc = "Open commit" })
+end
+
+---@param worktree string
+---@param max_count integer?
+---@return string?
+local function fetch(worktree, max_count)
+    local args = {
+        "log",
+        "--graph",
+        "--all",
+        "--decorate",
+        "--date=short",
+        "--format=format:" .. LOG_FORMAT,
+    }
+    if max_count then
+        table.insert(args, "--max-count=" .. max_count)
+    end
+    return util.git(args, { cwd = worktree })
+end
+
+---@type table<string, integer> -- worktree -> max_count
+local max_counts = {}
+
+---@param buf integer
+---@param r ow.Git.Repo
+local function populate(buf, r)
+    local stdout = fetch(r.worktree, max_counts[r.worktree])
+    if not stdout then
+        return
+    end
+    util.set_buf_lines(buf, 0, -1, util.split_lines(stdout))
+end
+
+---@class ow.Git.Log.OpenOpts
+---@field max_count integer?
+
+---@type table<string, fun(s: string): any>
+M.opt_parsers = {
+    max_count = tonumber,
+}
+
+---@param opts ow.Git.Log.OpenOpts?
+function M.open(opts)
+    opts = opts or {}
+    local r = repo.resolve()
+    if not r then
+        util.error("not in a git repository")
+        return
+    end
+
+    max_counts[r.worktree] = opts.max_count
+    local buf = vim.fn.bufadd(r.worktree .. "/GitLog")
+
+    local visible = vim.fn.bufwinid(buf)
+    if visible ~= -1 then
+        vim.api.nvim_set_current_win(visible)
+        populate(buf, r)
+        vim.api.nvim_win_set_cursor(visible, { 1, 0 })
+        return
+    end
+
+    vim.fn.bufload(buf)
+    repo.bind(buf, r)
+    util.setup_scratch(buf, { bufhidden = "hide" })
+    vim.bo[buf].filetype = "gitlog"
+    attach_dispatch(buf)
+
+    local win = util.place_buf(buf, nil)
+    vim.api.nvim_win_set_cursor(win, { 1, 0 })
+    populate(buf, r)
+end
+
+---@param cmd_opts table
+function M.run_glog(cmd_opts)
+    local parsed = { max_count = 1000 }
+    for _, a in ipairs(cmd_opts.fargs) do
+        local k, v = a:match("^([%w_]+)=(.*)$")
+        if not k then
+            util.error("invalid argument: %s", a)
+            return
+        end
+        ---@cast v -nil
+        local parser = M.opt_parsers[k]
+        if parser then
+            local value = parser(v)
+            if value ~= nil then
+                parsed[k] = value
+            end
+        end
+    end
+    M.open(parsed)
+end
+
+---@param arg_lead string
+---@return string[]
+function M.complete_glog(arg_lead)
+    local matches = {}
+    for k in pairs(M.opt_parsers) do
+        local prefix = k .. "="
+        if prefix:sub(1, #arg_lead) == arg_lead then
+            table.insert(matches, prefix)
+        end
+    end
+    table.sort(matches)
+    return matches
+end
+
+return M