" Options: 
let php_noindent_switch=0    " set this to '1' to not try to indent switch/case statements
"set sw=3                     " default shiftwidth of 3 spaces


if exists("b:did_indent")
  finish
endif
let b:did_indent = 1

setlocal indentexpr=GetPhpIndent()
"setlocal indentkeys+=0=,0),=EO
setlocal indentkeys+=0=,0),=EO,o,O,*<Return>,<>>,<bs>,{,}

" Only define the function once.
if exists("*GetPhpIndent")
  finish
endif

" Handle option(s)
if exists("php_noindent_switch")
  let b:php_noindent_switch=1
endif

if exists('g:html_indent_tags')
  unlet g:html_indent_tags
endif

function GetPhpIndent()
  " Find a non-empty line above the current line.
  let lnum = prevnonblank(v:lnum - 1)

  " Hit the start of the file, use zero indent.
  if lnum == 0
    return 0
  endif

  let line = getline(lnum)    " last line
  let cline = getline(v:lnum) " current line
  let pline = getline(lnum - 1) " previous to last line
  let ind = indent(lnum)

  let restore_ic=&ic
  let &ic=1 " ignore case

  let ind = <SID>HtmlIndentSum(lnum, -1)
  let ind = ind + <SID>HtmlIndentSum(v:lnum, 0)

  let &ic=restore_ic

  let ind = indent(lnum) + (&sw * ind)

  " Indent after php open tags 
  if line =~ '<?php' && line !~ '?>'
    let ind = ind + &sw
  endif
  if cline =~ '^\s*[?>]' " // Fix from Holger Dzeik <dzeik@nentec.de> Thanks!
    let ind = ind - &sw
  endif


  if exists("b:php_noindent_switch") " version 1 behavior, diy switch/case,etc
    " Indent blocks enclosed by {} or ()
    if line =~ '[{(]\s*\(#[^)}]*\)\=$'
      let ind = ind + &sw
    endif
    if cline =~ '^\s*[)}]'
      let ind = ind - &sw
    endif
    return ind
  else " Try to indent switch/case statements as well
    " Indent blocks enclosed by {} or () or case statements, with some anal requirements
    if line =~ 'case.*:\|[{(]\s*\(#[^)}]*\)\=$'
      let ind = ind + &sw
      " return if the current line is not another case statement of the previous line is a bracket open
      if cline !~ '.*case.*:\|default:' || line =~ '[{(]\s*\(#[^)}]*\)\=$'
        return ind
      endif
    endif
    if cline =~ '^\s*case.*:\|^\s*default:\|^\s*[)}]'
      let ind = ind - &sw
      " if the last line is a break or return, or the current line is a close bracket,
      " or if the previous line is a default statement, subtract another
      if line =~ '^\s*break;\|^\s*return\|' && cline =~ '^\s*[)}]' && pline =~ 'default:'
        let ind = ind - &sw
      endif
    endif

    if line =~ 'default:'
      let ind = ind + &sw
    endif
    return ind
  endif
endfunction


" [-- local settings (must come before aborting the script) --]
"setlocal indentexpr=HtmlIndentGet(v:lnum)
"setlocal indentkeys=o,O,*<Return>,<>>,<bs>,{,}



" [-- helper function to assemble tag list --]
fun! <SID>HtmlIndentPush(tag)
  if exists('g:html_indent_tags')
    let g:html_indent_tags = g:html_indent_tags.'\|'.a:tag
  else
    let g:html_indent_tags = a:tag
  endif
endfun


" [-- <ELEMENT ? - - ...> --]
call <SID>HtmlIndentPush('a')
call <SID>HtmlIndentPush('abbr')
call <SID>HtmlIndentPush('acronym')
call <SID>HtmlIndentPush('address')
call <SID>HtmlIndentPush('b')
call <SID>HtmlIndentPush('bdo')
call <SID>HtmlIndentPush('big')
call <SID>HtmlIndentPush('blockquote')
call <SID>HtmlIndentPush('button')
call <SID>HtmlIndentPush('caption')
call <SID>HtmlIndentPush('center')
call <SID>HtmlIndentPush('cite')
call <SID>HtmlIndentPush('code')
call <SID>HtmlIndentPush('colgroup')
call <SID>HtmlIndentPush('del')
call <SID>HtmlIndentPush('dfn')
call <SID>HtmlIndentPush('dir')
call <SID>HtmlIndentPush('div')
call <SID>HtmlIndentPush('dl')
call <SID>HtmlIndentPush('em')
call <SID>HtmlIndentPush('fieldset')
call <SID>HtmlIndentPush('font')
call <SID>HtmlIndentPush('form')
call <SID>HtmlIndentPush('frameset')
call <SID>HtmlIndentPush('h1')
call <SID>HtmlIndentPush('h2')
call <SID>HtmlIndentPush('h3')
call <SID>HtmlIndentPush('h4')
call <SID>HtmlIndentPush('h5')
call <SID>HtmlIndentPush('h6')
call <SID>HtmlIndentPush('i')
call <SID>HtmlIndentPush('iframe')
call <SID>HtmlIndentPush('ins')
call <SID>HtmlIndentPush('kbd')
call <SID>HtmlIndentPush('label')
call <SID>HtmlIndentPush('legend')
call <SID>HtmlIndentPush('map')
call <SID>HtmlIndentPush('menu')
call <SID>HtmlIndentPush('noframes')
call <SID>HtmlIndentPush('noscript')
call <SID>HtmlIndentPush('object')
call <SID>HtmlIndentPush('ol')
call <SID>HtmlIndentPush('optgroup')
call <SID>HtmlIndentPush('pre')
call <SID>HtmlIndentPush('q')
call <SID>HtmlIndentPush('s')
call <SID>HtmlIndentPush('samp')
call <SID>HtmlIndentPush('script')
call <SID>HtmlIndentPush('select')
call <SID>HtmlIndentPush('small')
call <SID>HtmlIndentPush('span')
call <SID>HtmlIndentPush('strong')
call <SID>HtmlIndentPush('style')
call <SID>HtmlIndentPush('sub')
call <SID>HtmlIndentPush('sup')
call <SID>HtmlIndentPush('table')
call <SID>HtmlIndentPush('textarea')
call <SID>HtmlIndentPush('title')
call <SID>HtmlIndentPush('tt')
call <SID>HtmlIndentPush('u')
call <SID>HtmlIndentPush('ul')
call <SID>HtmlIndentPush('var')


" [-- <ELEMENT ? O O ...> --]
if !exists('g:html_indent_strict')
  call <SID>HtmlIndentPush('body')
  call <SID>HtmlIndentPush('head')
  call <SID>HtmlIndentPush('html')
  call <SID>HtmlIndentPush('tbody')
endif


" [-- <ELEMENT ? O - ...> --]
if !exists('g:html_indent_strict_table')
  call <SID>HtmlIndentPush('th')
  call <SID>HtmlIndentPush('td')
  call <SID>HtmlIndentPush('tr')
  call <SID>HtmlIndentPush('tfoot')
  call <SID>HtmlIndentPush('thead')
endif

delfun <SID>HtmlIndentPush

set cpo-=C

" [-- count indent-increasing tags of line a:lnum --]
fun! <SID>HtmlIndentOpen(lnum)
  let s = substitute('x'.getline(a:lnum),
        \ '.\{-}\(\(<\)\('.g:html_indent_tags.'\)\>\)', "\1", 'g')
  let s = substitute(s, "[^\1].*$", '', '')
  return strlen(s)
endfun

" [-- count indent-decreasing tags of line a:lnum --]
fun! <SID>HtmlIndentClose(lnum)
  let s = substitute('x'.getline(a:lnum),
        \ '.\{-}\(\(<\)/\('.g:html_indent_tags.'\)\>>\)', "\1", 'g')
  let s = substitute(s, "[^\1].*$", '', '')
  return strlen(s)
endfun

" [-- count indent-increasing '{' of (java|css) line a:lnum --]
fun! <SID>HtmlIndentOpenAlt(lnum)
  return strlen(substitute(getline(a:lnum), '[^{]\+', '', 'g'))
endfun

" [-- count indent-decreasing '}' of (java|css) line a:lnum --]
fun! <SID>HtmlIndentCloseAlt(lnum)
  return strlen(substitute(getline(a:lnum), '[^}]\+', '', 'g'))
endfun

" [-- return the sum of indents respecting the syntax of a:lnum --]
fun! <SID>HtmlIndentSum(lnum, style)
  if a:style == match(getline(a:lnum), '^\s*</')
    if a:style == match(getline(a:lnum), '^\s*</\<\('.g:html_indent_tags.'\)\>')
      let open = <SID>HtmlIndentOpen(a:lnum)
      let close = <SID>HtmlIndentClose(a:lnum)
      if 0 != open || 0 != close
        return open - close
      endif
    endif
  endif
  if '' != &syntax &&
        \ synIDattr(synID(a:lnum, 1, 1), 'name') =~ '\(css\|java\).*' &&
        \ synIDattr(synID(a:lnum, strlen(getline(a:lnum)) - 1, 1), 'name')
        \ =~ '\(css\|java\).*'
    if a:style == match(getline(a:lnum), '^\s*}')
      return <SID>HtmlIndentOpenAlt(a:lnum) - <SID>HtmlIndentCloseAlt(a:lnum)
    endif
  endif
  return 0
endfun

" vim: set ts=3 sw=3: