cmder/vendor/clink.lua

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-- default script for clink, called by init.bat when injecting clink
-- !!! THIS FILE IS OVERWRITTEN WHEN CMDER IS UPDATED
-- !!! Use "%CMDER_ROOT%\config\<whatever>.lua" to add your lua startup scripts
-- At first, load the original clink.lua file
-- this is needed as we set the script path to this dir and therefore the original
-- clink.lua is not loaded.
local clink_lua_file = clink.get_env('CMDER_ROOT')..'\\vendor\\clink\\clink.lua'
dofile(clink_lua_file)
-- now add our own things...
---
-- Setting the prompt in clink means that commands which rewrite the prompt do
-- not destroy our own prompt. It also means that started cmds (or batch files
-- which echo) don't get the ugly '{lamb}' shown.
---
function set_prompt_filter()
-- get_cwd() is differently encoded than the clink.prompt.value, so everything other than
-- pure ASCII will get garbled. So try to parse the current directory from the original prompt
-- and only if that doesn't work, use get_cwd() directly.
-- The matching relies on the default prompt which ends in X:\PATH\PATH>
-- (no network path possible here!)
local old_prompt = clink.prompt.value
local cwd = old_prompt:match('.*(.:[^>]*)>')
if cwd == nil then cwd = clink.get_cwd() end
-- environment systems like pythons virtualenv change the PROMPT and usually
-- set some variable. But the variables are differently named and we would never
-- get them all, so try to parse the env name out of the PROMPT.
-- envs are usually put in round or square parentheses and before the old prompt
local env = old_prompt:match('.*%(([^%)]+)%).+:')
-- also check for square brackets
if env == nil then env = old_prompt:match('.*%[([^%]]+)%].+:') end
-- build our own prompt
-- orig: $E[1;32;40m$P$S{git}{hg}$S$_$E[1;30;40m{lamb}$S$E[0m
-- color codes: "\x1b[1;37;40m"
local cmder_prompt = "\x1b[1;32;40m{cwd} {git}{hg} \n\x1b[1;30;40m{lamb} \x1b[0m"
cmder_prompt = string.gsub(cmder_prompt, "{cwd}", cwd)
if env == nil then
lambda = "λ"
else
lambda = "("..env..") λ"
end
clink.prompt.value = string.gsub(cmder_prompt, "{lamb}", lambda)
end
---
-- Resolves closest directory location for specified directory.
-- Navigates subsequently up one level and tries to find specified directory
-- @param {string} path Path to directory will be checked. If not provided
-- current directory will be used
-- @param {string} dirname Directory name to search for
-- @return {string} Path to specified directory or nil if such dir not found
local function get_dir_contains(path, dirname)
-- return parent path for specified entry (either file or directory)
local function pathname(path)
local prefix = ""
local i = path:find("[\\/:][^\\/:]*$")
if i then
prefix = path:sub(1, i-1)
end
return prefix
end
-- Navigates up one level
local function up_one_level(path)
if path == nil then path = '.' end
if path == '.' then path = clink.get_cwd() end
return pathname(path)
end
-- Checks if provided directory contains git directory
local function has_specified_dir(path, specified_dir)
if path == nil then path = '.' end
local found_dirs = clink.find_dirs(path..'/'..specified_dir)
if #found_dirs > 0 then return true end
return false
end
-- Set default path to current directory
if path == nil then path = '.' end
-- If we're already have .git directory here, then return current path
if has_specified_dir(path, dirname) then
return path..'/'..dirname
else
-- Otherwise go up one level and make a recursive call
local parent_path = up_one_level(path)
if parent_path == path then
return nil
else
return get_dir_contains(parent_path, dirname)
end
end
end
local function get_hg_dir(path)
return get_dir_contains(path, '.hg')
end
-- adapted from from clink-completions' git.lua
local function get_git_dir(path)
-- return parent path for specified entry (either file or directory)
local function pathname(path)
local prefix = ""
local i = path:find("[\\/:][^\\/:]*$")
if i then
prefix = path:sub(1, i-1)
end
return prefix
end
-- Checks if provided directory contains git directory
local function has_git_dir(dir)
return #clink.find_dirs(dir..'/.git') > 0 and dir..'/.git'
end
local function has_git_file(dir)
local gitfile = io.open(dir..'/.git')
if not gitfile then return false end
local git_dir = gitfile:read():match('gitdir: (.*)')
gitfile:close()
return git_dir and dir..'/'..git_dir
end
-- Set default path to current directory
if not path or path == '.' then path = clink.get_cwd() end
-- Calculate parent path now otherwise we won't be
-- able to do that inside of logical operator
local parent_path = pathname(path)
return has_git_dir(path)
or has_git_file(path)
-- Otherwise go up one level and make a recursive call
or (parent_path ~= path and get_git_dir(parent_path) or nil)
end
---
-- Find out current branch
-- @return {false|mercurial branch name}
---
function get_hg_branch()
for line in io.popen("hg branch 2>nul"):lines() do
local m = line:match("(.+)$")
if m then
return m
end
end
return false
end
---
-- Get the status of working dir
-- @return {bool}
---
function get_hg_status()
for line in io.popen("hg status -0"):lines() do
return false
end
return true
end
function hg_prompt_filter()
-- Colors for mercurial status
local colors = {
clean = "\x1b[1;37;40m",
dirty = "\x1b[31;1m",
}
if get_hg_dir() then
-- if we're inside of mercurial repo then try to detect current branch
local branch = get_hg_branch()
if branch then
-- Has branch => therefore it is a mercurial folder, now figure out status
if get_hg_status() then
color = colors.clean
else
color = colors.dirty
end
clink.prompt.value = string.gsub(clink.prompt.value, "{hg}", color.."("..branch..")")
return false
end
end
-- No mercurial present or not in mercurial file
clink.prompt.value = string.gsub(clink.prompt.value, "{hg}", "")
return false
end
---
-- Find out current branch
-- @return {nil|git branch name}
---
function get_git_branch(git_dir)
local git_dir = git_dir or get_git_dir()
-- If git directory not found then we're probably outside of repo
-- or something went wrong. The same is when head_file is nil
local head_file = git_dir and io.open(git_dir..'/HEAD')
if not head_file then return end
local HEAD = head_file:read()
head_file:close()
-- if HEAD matches branch expression, then we're on named branch
-- otherwise it is a detached commit
local branch_name = HEAD:match('ref: refs/heads/(.+)')
return branch_name or 'HEAD detached at '..HEAD:sub(1, 7)
end
---
-- Get the status of working dir
-- @return {bool}
---
function get_git_status()
local file = io.popen("git status --no-lock-index --porcelain 2>nul")
for line in file:lines() do
file:close()
return false
end
file:close()
return true
end
function git_prompt_filter()
-- Colors for git status
local colors = {
clean = "\x1b[1;37;40m",
dirty = "\x1b[31;1m",
}
local git_dir = get_git_dir()
if git_dir then
-- if we're inside of git repo then try to detect current branch
local branch = get_git_branch(git_dir)
if branch then
-- Has branch => therefore it is a git folder, now figure out status
if get_git_status() then
color = colors.clean
else
color = colors.dirty
end
clink.prompt.value = string.gsub(clink.prompt.value, "{git}", color.."("..branch..")")
return false
end
end
-- No git present or not in git file
clink.prompt.value = string.gsub(clink.prompt.value, "{git}", "")
return false
end
-- insert the set_prompt at the very beginning so that it runs first
clink.prompt.register_filter(set_prompt_filter, 1)
clink.prompt.register_filter(hg_prompt_filter, 50)
clink.prompt.register_filter(git_prompt_filter, 50)
local completions_dir = clink.get_env('CMDER_ROOT')..'/vendor/clink-completions/'
for _,lua_module in ipairs(clink.find_files(completions_dir..'*.lua')) do
-- Skip files that starts with _. This could be useful if some files should be ignored
if not string.match(lua_module, '^_.*') then
local filename = completions_dir..lua_module
-- use dofile instead of require because require caches loaded modules
-- so config reloading using Alt-Q won't reload updated modules.
dofile(filename)
end
end
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