mirror of
https://github.com/neovim/neovim.git
synced 2024-12-29 14:41:06 -07:00
368 lines
11 KiB
Lua
368 lines
11 KiB
Lua
local M = {}
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local iswin = vim.uv.os_uname().sysname == 'Windows_NT'
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--- Iterate over all the parents of the given path.
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---
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--- Example:
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--- <pre>lua
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--- local root_dir
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--- for dir in vim.fs.parents(vim.api.nvim_buf_get_name(0)) do
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--- if vim.fn.isdirectory(dir .. "/.git") == 1 then
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--- root_dir = dir
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--- break
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--- end
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--- end
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---
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--- if root_dir then
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--- print("Found git repository at", root_dir)
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--- end
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--- </pre>
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---
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---@param start (string) Initial path.
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---@return fun(_, dir: string): string? # Iterator
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---@return nil
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---@return string|nil
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function M.parents(start)
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return function(_, dir)
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local parent = M.dirname(dir)
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if parent == dir then
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return nil
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end
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return parent
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end,
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nil,
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start
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end
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--- Return the parent directory of the given path
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---
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---@param file (string) Path
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---@return string|nil Parent directory of {file}
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function M.dirname(file)
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if file == nil then
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return nil
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end
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vim.validate({ file = { file, 's' } })
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if iswin and file:match('^%w:[\\/]?$') then
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return (file:gsub('\\', '/'))
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elseif not file:match('[\\/]') then
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return '.'
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elseif file == '/' or file:match('^/[^/]+$') then
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return '/'
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end
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local dir = file:match('[/\\]$') and file:sub(1, #file - 1) or file:match('^([/\\]?.+)[/\\]')
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if iswin and dir:match('^%w:$') then
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return dir .. '/'
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end
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return (dir:gsub('\\', '/'))
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end
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--- Return the basename of the given path
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---
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---@param file string Path
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---@return string|nil Basename of {file}
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function M.basename(file)
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if file == nil then
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return nil
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end
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vim.validate({ file = { file, 's' } })
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if iswin and file:match('^%w:[\\/]?$') then
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return ''
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end
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return file:match('[/\\]$') and '' or (file:match('[^\\/]*$'):gsub('\\', '/'))
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end
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--- Concatenate directories and/or file paths into a single path with normalization
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--- (e.g., `"foo/"` and `"bar"` get joined to `"foo/bar"`)
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---
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---@param ... string
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---@return string
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function M.joinpath(...)
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return (table.concat({ ... }, '/'):gsub('//+', '/'))
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end
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---@alias Iterator fun(): string?, string?
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--- Return an iterator over the items located in {path}
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---
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---@param path (string) An absolute or relative path to the directory to iterate
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--- over. The path is first normalized |vim.fs.normalize()|.
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--- @param opts table|nil Optional keyword arguments:
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--- - depth: integer|nil How deep the traverse (default 1)
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--- - skip: (fun(dir_name: string): boolean)|nil Predicate
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--- to control traversal. Return false to stop searching the current directory.
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--- Only useful when depth > 1
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---
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---@return Iterator over items in {path}. Each iteration yields two values: "name" and "type".
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--- "name" is the basename of the item relative to {path}.
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--- "type" is one of the following:
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--- "file", "directory", "link", "fifo", "socket", "char", "block", "unknown".
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function M.dir(path, opts)
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opts = opts or {}
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vim.validate({
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path = { path, { 'string' } },
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depth = { opts.depth, { 'number' }, true },
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skip = { opts.skip, { 'function' }, true },
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})
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if not opts.depth or opts.depth == 1 then
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local fs = vim.uv.fs_scandir(M.normalize(path))
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return function()
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if not fs then
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return
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end
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return vim.uv.fs_scandir_next(fs)
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end
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end
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--- @async
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return coroutine.wrap(function()
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local dirs = { { path, 1 } }
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while #dirs > 0 do
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--- @type string, integer
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local dir0, level = unpack(table.remove(dirs, 1))
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local dir = level == 1 and dir0 or M.joinpath(path, dir0)
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local fs = vim.uv.fs_scandir(M.normalize(dir))
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while fs do
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local name, t = vim.uv.fs_scandir_next(fs)
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if not name then
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break
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end
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local f = level == 1 and name or M.joinpath(dir0, name)
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coroutine.yield(f, t)
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if
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opts.depth
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and level < opts.depth
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and t == 'directory'
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and (not opts.skip or opts.skip(f) ~= false)
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then
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dirs[#dirs + 1] = { f, level + 1 }
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end
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end
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end
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end)
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end
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--- @class vim.fs.find.opts
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--- @field path string
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--- @field upward boolean
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--- @field stop string
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--- @field type string
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--- @field limit number
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--- Find files or directories (or other items as specified by `opts.type`) in the given path.
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---
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--- Finds items given in {names} starting from {path}. If {upward} is "true"
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--- then the search traverses upward through parent directories; otherwise,
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--- the search traverses downward. Note that downward searches are recursive
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--- and may search through many directories! If {stop} is non-nil, then the
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--- search stops when the directory given in {stop} is reached. The search
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--- terminates when {limit} (default 1) matches are found. You can set {type}
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--- to "file", "directory", "link", "socket", "char", "block", or "fifo"
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--- to narrow the search to find only that type.
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---
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--- Examples:
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--- <pre>lua
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--- -- location of Cargo.toml from the current buffer's path
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--- local cargo = vim.fs.find('Cargo.toml', {
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--- upward = true,
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--- stop = vim.uv.os_homedir(),
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--- path = vim.fs.dirname(vim.api.nvim_buf_get_name(0)),
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--- })
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---
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--- -- list all test directories under the runtime directory
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--- local test_dirs = vim.fs.find(
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--- {'test', 'tst', 'testdir'},
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--- {limit = math.huge, type = 'directory', path = './runtime/'}
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--- )
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---
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--- -- get all files ending with .cpp or .hpp inside lib/
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--- local cpp_hpp = vim.fs.find(function(name, path)
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--- return name:match('.*%.[ch]pp$') and path:match('[/\\\\]lib$')
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--- end, {limit = math.huge, type = 'file'})
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--- </pre>
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---
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---@param names (string|string[]|fun(name: string, path: string): boolean) Names of the items to find.
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--- Must be base names, paths and globs are not supported when {names} is a string or a table.
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--- If {names} is a function, it is called for each traversed item with args:
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--- - name: base name of the current item
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--- - path: full path of the current item
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--- The function should return `true` if the given item is considered a match.
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---
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---@param opts (table) Optional keyword arguments:
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--- - path (string): Path to begin searching from. If
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--- omitted, the |current-directory| is used.
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--- - upward (boolean, default false): If true, search
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--- upward through parent directories. Otherwise,
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--- search through child directories
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--- (recursively).
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--- - stop (string): Stop searching when this directory is
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--- reached. The directory itself is not searched.
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--- - type (string): Find only items of the given type.
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--- If omitted, all items that match {names} are included.
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--- - limit (number, default 1): Stop the search after
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--- finding this many matches. Use `math.huge` to
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--- place no limit on the number of matches.
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---@return (string[]) # Normalized paths |vim.fs.normalize()| of all matching items
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function M.find(names, opts)
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opts = opts or {} --[[@as vim.fs.find.opts]]
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vim.validate({
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names = { names, { 's', 't', 'f' } },
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path = { opts.path, 's', true },
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upward = { opts.upward, 'b', true },
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stop = { opts.stop, 's', true },
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type = { opts.type, 's', true },
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limit = { opts.limit, 'n', true },
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})
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if type(names) == 'string' then
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names = { names }
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end
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local path = opts.path or vim.uv.cwd()
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local stop = opts.stop
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local limit = opts.limit or 1
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local matches = {} --- @type string[]
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local function add(match)
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matches[#matches + 1] = M.normalize(match)
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if #matches == limit then
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return true
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end
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end
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if opts.upward then
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local test --- @type fun(p: string): string[]
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if type(names) == 'function' then
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test = function(p)
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local t = {}
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for name, type in M.dir(p) do
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if (not opts.type or opts.type == type) and names(name, p) then
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table.insert(t, M.joinpath(p, name))
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end
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end
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return t
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end
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else
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test = function(p)
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local t = {} --- @type string[]
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for _, name in ipairs(names) do
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local f = M.joinpath(p, name)
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local stat = vim.uv.fs_stat(f)
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if stat and (not opts.type or opts.type == stat.type) then
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t[#t + 1] = f
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end
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end
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return t
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end
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end
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for _, match in ipairs(test(path)) do
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if add(match) then
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return matches
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end
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end
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for parent in M.parents(path) do
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if stop and parent == stop then
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break
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end
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for _, match in ipairs(test(parent)) do
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if add(match) then
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return matches
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end
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end
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end
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else
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local dirs = { path }
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while #dirs > 0 do
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local dir = table.remove(dirs, 1)
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if stop and dir == stop then
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break
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end
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for other, type_ in M.dir(dir) do
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local f = M.joinpath(dir, other)
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if type(names) == 'function' then
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if (not opts.type or opts.type == type_) and names(other, dir) then
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if add(f) then
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return matches
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end
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end
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else
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for _, name in ipairs(names) do
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if name == other and (not opts.type or opts.type == type_) then
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if add(f) then
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return matches
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end
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end
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end
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end
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if type_ == 'directory' then
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dirs[#dirs + 1] = f
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end
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end
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end
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end
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return matches
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end
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--- Normalize a path to a standard format. A tilde (~) character at the
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--- beginning of the path is expanded to the user's home directory and any
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--- backslash (\\) characters are converted to forward slashes (/). Environment
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--- variables are also expanded.
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---
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--- Examples:
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--- <pre>lua
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--- vim.fs.normalize('C:\\\\Users\\\\jdoe')
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--- --> 'C:/Users/jdoe'
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---
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--- vim.fs.normalize('~/src/neovim')
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--- --> '/home/jdoe/src/neovim'
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---
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--- vim.fs.normalize('$XDG_CONFIG_HOME/nvim/init.vim')
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--- --> '/Users/jdoe/.config/nvim/init.vim'
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--- </pre>
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---
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---@param path (string) Path to normalize
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---@param opts table|nil Options:
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--- - expand_env: boolean Expand environment variables (default: true)
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---@return (string) Normalized path
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function M.normalize(path, opts)
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opts = opts or {}
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vim.validate({
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path = { path, { 'string' } },
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expand_env = { opts.expand_env, { 'boolean' }, true },
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})
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if path:sub(1, 1) == '~' then
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local home = vim.uv.os_homedir() or '~'
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if home:sub(-1) == '\\' or home:sub(-1) == '/' then
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home = home:sub(1, -2)
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end
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path = home .. path:sub(2)
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end
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if opts.expand_env == nil or opts.expand_env then
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path = path:gsub('%$([%w_]+)', vim.uv.os_getenv)
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end
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path = path:gsub('\\', '/'):gsub('/+', '/')
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if iswin and path:match('^%w:/$') then
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return path
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end
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return (path:gsub('(.)/$', '%1'))
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end
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return M
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