"======================================================================
"
" compat.vim - 
"
" Created by skywind on 2023/08/03
" Last Modified: 2023/08/03 23:45:25
"
"======================================================================


"----------------------------------------------------------------------
" internal 
"----------------------------------------------------------------------
let s:windows = has('win32') || has('win95') || has('win64') || has('win16')
let s:scripthome = fnamemodify(resolve(expand('<sfile>:p')), ':h')
let s:python = -1


"----------------------------------------------------------------------
" glob files
"----------------------------------------------------------------------
function! asyncrun#compat#glob( ... )
	let l:nosuf = (a:0 > 1 && a:2)
	let l:list = (a:0 > 2 && a:3)
	if l:nosuf
		let l:save_wildignore = &wildignore
		set wildignore=
	endif
	try
		let l:result = call('glob', [a:1])
		return (l:list ? split(l:result, '\n') : l:result)
	finally
		if exists('l:save_wildignore')
			let &wildignore = l:save_wildignore
		endif
	endtry
endfunc


"----------------------------------------------------------------------
" list files
"----------------------------------------------------------------------
function! asyncrun#compat#list(path, ...)
	let nosuf = (a:0 > 0)? (a:1) : 0
	if !isdirectory(a:path)
		return []
	endif
	let path = a:path . '/*'
	let part = asyncrun#compat#glob(path, nosuf)
	let candidate = []
	for n in split(part, "\n")
		let f = fnamemodify(n, ':t')
		if !empty(f)
			call add(candidate, f)
		endif
	endfor
	return candidate
endfunc


"----------------------------------------------------------------------
" check python
"----------------------------------------------------------------------
function! asyncrun#compat#check_python()
	if s:python >= 0
		return s:python
	endif
	if !has('python3')
		if !has('python2')
			if !has('python')
				let s:python = 0
				return 0
			endif
		endif
	endif
	let s:python = 0
	try
		silent! pyx import os as __os
		silent! pyx import vim as __vim
		silent! pyx __vim.execute('let avail = 1')
		silent! let s:python = pyxeval('1')
	catch
	endtry
	return s:python
endfunc