Barrett Ruth
3c3b27a2cb
Problem: get_repo_root() shells out on every call, causing 4-6 redundant subprocesses per gdiff_file() invocation. highlight_vim_syntax() leaks a scratch buffer if nvim_buf_call errors. lib.ensure() silently drops callbacks during download, permanently missing intra-line highlights. The debounce timer callback can operate on an invalid buffer. Solution: Cache get_repo_root() results by parent directory. Wrap nvim_buf_call and nvim_buf_delete in pcall so the scratch buffer is always cleaned up. Queue pending callbacks in lib.ensure() so all callers receive the handle once the download completes. Guard the debounce timer callback with nvim_buf_is_valid.
119 lines
3 KiB
Lua
119 lines
3 KiB
Lua
local M = {}
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local repo_root_cache = {}
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---@param filepath string
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---@return string?
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function M.get_repo_root(filepath)
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local dir = vim.fn.fnamemodify(filepath, ':h')
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if repo_root_cache[dir] ~= nil then
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return repo_root_cache[dir]
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end
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local result = vim.fn.systemlist({ 'git', '-C', dir, 'rev-parse', '--show-toplevel' })
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if vim.v.shell_error ~= 0 then
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return nil
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end
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repo_root_cache[dir] = result[1]
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return result[1]
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end
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---@param revision string
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---@param filepath string
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---@return string[]?, string?
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function M.get_file_content(revision, filepath)
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local repo_root = M.get_repo_root(filepath)
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if not repo_root then
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return nil, 'not in a git repository'
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end
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local rel_path = vim.fn.fnamemodify(filepath, ':.')
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if vim.startswith(filepath, repo_root) then
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rel_path = filepath:sub(#repo_root + 2)
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end
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local result = vim.fn.systemlist({ 'git', '-C', repo_root, 'show', revision .. ':' .. rel_path })
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if vim.v.shell_error ~= 0 then
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return nil, 'failed to get file at revision: ' .. revision
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end
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return result, nil
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end
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---@param filepath string
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---@return string?
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function M.get_relative_path(filepath)
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local repo_root = M.get_repo_root(filepath)
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if not repo_root then
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return nil
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end
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if vim.startswith(filepath, repo_root) then
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return filepath:sub(#repo_root + 2)
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end
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return vim.fn.fnamemodify(filepath, ':.')
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end
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---@param filepath string
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---@return string[]?, string?
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function M.get_index_content(filepath)
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local repo_root = M.get_repo_root(filepath)
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if not repo_root then
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return nil, 'not in a git repository'
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end
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local rel_path = M.get_relative_path(filepath)
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if not rel_path then
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return nil, 'could not determine relative path'
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end
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local result = vim.fn.systemlist({ 'git', '-C', repo_root, 'show', ':0:' .. rel_path })
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if vim.v.shell_error ~= 0 then
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return nil, 'file not in index'
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end
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return result, nil
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end
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---@param filepath string
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---@return string[]?, string?
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function M.get_working_content(filepath)
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if vim.fn.filereadable(filepath) ~= 1 then
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return nil, 'file not readable'
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end
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local lines = vim.fn.readfile(filepath)
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return lines, nil
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end
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---@param filepath string
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---@return boolean
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function M.file_exists_in_index(filepath)
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local repo_root = M.get_repo_root(filepath)
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if not repo_root then
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return false
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end
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local rel_path = M.get_relative_path(filepath)
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if not rel_path then
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return false
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end
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vim.fn.system({ 'git', '-C', repo_root, 'ls-files', '--stage', '--', rel_path })
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return vim.v.shell_error == 0
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end
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---@param revision string
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---@param filepath string
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---@return boolean
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function M.file_exists_at_revision(revision, filepath)
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local repo_root = M.get_repo_root(filepath)
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if not repo_root then
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return false
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end
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local rel_path = M.get_relative_path(filepath)
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if not rel_path then
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return false
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end
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vim.fn.system({ 'git', '-C', repo_root, 'cat-file', '-e', revision .. ':' .. rel_path })
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return vim.v.shell_error == 0
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end
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return M
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