tests/bundled/lh-vim-lib/autoload/lh/option.vim @ c839b22aa015

defer "can't load gundo" warning
Only inform that gundo didn't load when an attempt is made to invoke it.
Too many hosts still don't have vim 7.3, but I'd like to do a straight
update of my vimfiles from my dvcs without needing any fiddly
conditionals in order to load vim without a warning message.
author Seth Milliken <seth@janrain.com>
date Wed, 29 Dec 2010 15:16:33 -0800
parents 2b3d5ee5c4a4
children (none)
"=============================================================================
" $Id: option.vim 246 2010-09-19 22:40:58Z luc.hermitte $
" File:		autoload/lh/option.vim                                    {{{1
" Author:	Luc Hermitte <EMAIL:hermitte {at} free {dot} fr>
"		<URL:http://code.google.com/p/lh-vim/>
" Version:	2.2.1
" Created:	24th Jul 2004
" Last Update:	$Date: 2010-09-19 18:40:58 -0400 (Sun, 19 Sep 2010) $ (07th Oct 2006)
"------------------------------------------------------------------------
" Description:
" 	Defines the global function lh#option#get().
"       Aimed at (ft)plugin writers.
" 
"------------------------------------------------------------------------
" Installation:
" 	Drop this file into {rtp}/autoload/lh/
" 	Requires Vim 7+
" History:	
" 	v2.0.5
" 	(*) lh#option#get_non_empty() manages Lists and Dictionaries
" 	(*) lh#option#get() doesn't test emptyness anymore
" 	v2.0.0
" 		Code moved from {rtp}/macros/ 
" }}}1
"=============================================================================


"=============================================================================
let s:cpo_save=&cpo
set cpo&vim

"------------------------------------------------------------------------
" ## Functions {{{1
" # Debug {{{2
function! lh#option#verbose(level)
  let s:verbose = a:level
endfunction

function! s:Verbose(expr)
  if exists('s:verbose') && s:verbose
    echomsg a:expr
  endif
endfunction

function! lh#option#debug(expr)
  return eval(a:expr)
endfunction

" # Public {{{2
" Function: lh#option#get(name, default [, scope])            {{{3
" @return b:{name} if it exists, or g:{name} if it exists, or {default}
" otherwise
" The order of the variables checked can be specified through the optional
" argument {scope}
function! lh#option#get(name,default,...)
  let scope = (a:0 == 1) ? a:1 : 'bg'
  let name = a:name
  let i = 0
  while i != strlen(scope)
    if exists(scope[i].':'.name)
      " \ && (0 != strlen({scope[i]}:{name}))
      return {scope[i]}:{name}
    endif
    let i += 1
  endwhile 
  return a:default
endfunction
function! lh#option#Get(name,default,...)
  let scope = (a:0 == 1) ? a:1 : 'bg'
  return lh#option#get(a:name, a:default, scope)
endfunction

function! s:IsEmpty(variable)
  if     type(a:variable) == type('string') | return 0 == strlen(a:variable)
  elseif type(a:variable) == type(42)       | return 0 == a:variable
  elseif type(a:variable) == type([])       | return 0 == len(a:variable)
  elseif type(a:variable) == type({})       | return 0 == len(a:variable)
  else                                      | return false
  endif
endfunction

" Function: lh#option#get_non_empty(name, default [, scope])            {{{3
" @return of b:{name}, g:{name}, or {default} the first which exists and is not empty 
" The order of the variables checked can be specified through the optional
" argument {scope}
function! lh#option#get_non_empty(name,default,...)
  let scope = (a:0 == 1) ? a:1 : 'bg'
  let name = a:name
  let i = 0
  while i != strlen(scope)
    if exists(scope[i].':'.name) && !s:IsEmpty({scope[i]}:{name})
      return {scope[i]}:{name}
    endif
    let i += 1
  endwhile 
  return a:default
endfunction
function! lh#option#GetNonEmpty(name,default,...)
  let scope = (a:0 == 1) ? a:1 : 'bg'
  return lh#option#get_non_empty(a:name, a:default, scope)
endfunction

" Functions }}}1
"------------------------------------------------------------------------
let &cpo=s:cpo_save
"=============================================================================
" vim600: set fdm=marker: