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" Vim indent script for HTML
" General: "{{{
" File: html.vim (Vimscript #2075)
" Author: Andy Wokula <anwoku@yahoo.de>
" Last Change: 2013 Jun 12
" Rev Days: 13
" Version: 0.9
" Vim Version: Vim7
" Description:
" Improved version of the distributed html indent script, faster on a
" range of lines.
"
" Credits:
" indent/html.vim (2006 Jun 05) from J. Zellner
" indent/css.vim (2006 Dec 20) from N. Weibull
"
" History:
" 2012 Oct 21 (v0.9) added support for shiftwidth()
" 2011 Sep 09 (v0.8) added HTML5 tags (thx to J. Zuckerman)
" 2008 Apr 28 (v0.6) revised customization
" 2008 Mar 09 (v0.5) fixed 'indk' issue (thx to C.J. Robinson)
" }}}
" Init Folklore, check user settings (2nd time ++) "{{{
if exists("b:did_indent")
finish
endif
let b:did_indent = 1
setlocal indentexpr=HtmlIndent()
setlocal indentkeys=o,O,<Return>,<>>,{,},!^F
let b:indent = {"lnum": -1}
let b:undo_indent = "set inde< indk<| unlet b:indent"
" Load Once:
if exists("*HtmlIndent")
call HtmlIndent_CheckUserSettings()
finish
endif
" Patch 7.3.694
if exists('*shiftwidth')
let s:ShiftWidth = function('shiftwidth')
else
func! s:ShiftWidth()
return &shiftwidth
endfunc
endif
let s:cpo_save = &cpo
set cpo-=C
"}}}
func! HtmlIndent_CheckUserSettings() "{{{
if exists("g:html_indent_inctags")
call s:AddITags(split(g:html_indent_inctags, ","))
endif
if exists("g:html_indent_autotags")
call s:RemoveITags(split(g:html_indent_autotags, ","))
endif
let indone = {"zero": 0
\,"auto": "indent(prevnonblank(v:lnum-1))"
\,"inc": "b:indent.blocktagind + s:ShiftWidth()"}
if exists("g:html_indent_script1")
let s:js1indent = get(indone, g:html_indent_script1, indone.zero)
endif
if exists("g:html_indent_style1")
let s:css1indent = get(indone, g:html_indent_style1, indone.zero)
endif
endfunc "}}}
" Init Script Vars "{{{
let s:usestate = 1
let s:css1indent = 0
let s:js1indent = 0
" not to be changed:
let s:endtags = [0,0,0,0,0,0,0,0] " some places unused
let s:newstate = {}
let s:countonly = 0
"}}}
func! s:AddITags(taglist) "{{{
for itag in a:taglist
let s:indent_tags[itag] = 1
let s:indent_tags['/'.itag] = -1
endfor
endfunc "}}}
func! s:AddBlockTag(tag, id, ...) "{{{
if !(a:id >= 2 && a:id < 2+len(s:endtags))
return
endif
let s:indent_tags[a:tag] = a:id
if a:0 == 0
let s:indent_tags['/'.a:tag] = -a:id
let s:endtags[a:id-2] = "</".a:tag.">"
else
let s:indent_tags[a:1] = -a:id
let s:endtags[a:id-2] = a:1
endif
endfunc "}}}
func! s:RemoveITags(taglist) "{{{
" remove itags (protect blocktags from being removed)
for itag in a:taglist
if !has_key(s:indent_tags, itag) || s:indent_tags[itag] != 1
continue
endif
unlet s:indent_tags[itag]
if itag =~ '^\w\+$'
unlet s:indent_tags["/".itag]
endif
endfor
endfunc "}}}
" Add Indent Tags: {{{
if !exists("s:indent_tags")
let s:indent_tags = {}
endif
" old tags:
call s:AddITags(['a', 'abbr', 'acronym', 'address', 'b', 'bdo', 'big',
\ 'blockquote', 'button', 'caption', 'center', 'cite', 'code', 'colgroup',
\ 'del', 'dfn', 'dir', 'div', 'dl', 'em', 'fieldset', 'font', 'form',
\ 'frameset', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'i', 'iframe', 'ins', 'kbd',
\ 'label', 'legend', 'map', 'menu', 'noframes', 'noscript', 'object', 'ol',
\ 'optgroup', 'q', 's', 'samp', 'select', 'small', 'span', 'strong', 'sub',
\ 'sup', 'table', 'textarea', 'title', 'tt', 'u', 'ul', 'var', 'th', 'td',
\ 'tr', 'tfoot', 'thead'])
" tags added 2011 Sep 09 (especially HTML5 tags):
call s:AddITags(['area', 'article', 'aside', 'audio', 'bdi', 'canvas',
\ 'command', 'datalist', 'details', 'embed', 'figure', 'footer',
\ 'header', 'group', 'keygen', 'mark', 'math', 'meter', 'nav', 'output',
\ 'progress', 'ruby', 'section', 'svg', 'texture', 'time', 'video',
\ 'wbr', 'text'])
"}}}
" Add Block Tags: contain alien content "{{{
call s:AddBlockTag('pre', 2)
call s:AddBlockTag('script', 3)
call s:AddBlockTag('style', 4)
call s:AddBlockTag('<!--', 5, '-->')
"}}}
func! s:CountITags(...) "{{{
" relative indent steps for current line [unit &sw]:
let s:curind = 0
" relative indent steps for next line [unit &sw]:
let s:nextrel = 0
if a:0==0
let s:block = s:newstate.block
let tmpline = substitute(s:curline, '<\zs\/\=\w\+\>\|<!--\|-->', '\=s:CheckTag(submatch(0))', 'g')
if s:block == 3
let s:newstate.scripttype = s:GetScriptType(matchstr(tmpline, '\C.*<SCRIPT\>\zs[^>]*'))
endif
let s:newstate.block = s:block
else
let s:block = 0 " assume starting outside of a block
let s:countonly = 1 " don't change state
let tmpline = substitute(s:altline, '<\zs\/\=\w\+\>\|<!--\|-->', '\=s:CheckTag(submatch(0))', 'g')
let s:countonly = 0
endif
endfunc "}}}
func! s:CheckTag(itag) "{{{
" "tag" or "/tag" or "<!--" or "-->"
let ind = get(s:indent_tags, a:itag)
if ind == -1
" closing tag
if s:block != 0
" ignore itag within a block
return "foo"
endif
if s:nextrel == 0
let s:curind -= 1
else
let s:nextrel -= 1
endif
" if s:curind >= 1
" let s:curind -= 1
" else
" let s:nextrel -= 1
" endif
elseif ind == 1
" opening tag
if s:block != 0
return "foo"
endif
let s:nextrel += 1
elseif ind != 0
" block-tag (opening or closing)
return s:Blocktag(a:itag, ind)
endif
" else ind==0 (other tag found): keep indent
return "foo" " no matter
endfunc "}}}
func! s:Blocktag(blocktag, ind) "{{{
if a:ind > 0
" a block starts here
if s:block != 0
" already in a block (nesting) - ignore
" especially ignore comments after other blocktags
return "foo"
endif
let s:block = a:ind " block type
if s:countonly
return "foo"
endif
let s:newstate.blocklnr = v:lnum
" save allover indent for the endtag
let s:newstate.blocktagind = b:indent.baseindent + (s:nextrel + s:curind) * s:ShiftWidth()
if a:ind == 3
return "SCRIPT" " all except this must be lowercase
" line is to be checked again for the type attribute
endif
else
let s:block = 0
" we get here if starting and closing block-tag on same line
endif
return "foo"
endfunc "}}}
func! s:GetScriptType(str) "{{{
if a:str == "" || a:str =~ "java"
return "javascript"
else
return ""
endif
endfunc "}}}
func! s:FreshState(lnum) "{{{
" Look back in the file (lines 1 to a:lnum-1) to calc a state for line
" a:lnum. A state is to know ALL relevant details about the lines
" 1..a:lnum-1, initial calculating (here!) can be slow, but updating is
" fast (incremental).
" State:
" lnum last indented line == prevnonblank(a:lnum - 1)
" block = 0 a:lnum located within special tag: 0:none, 2:<pre>,
" 3:<script>, 4:<style>, 5:<!--
" baseindent use this indent for line a:lnum as a start - kind of
" autoindent (if block==0)
" scripttype = '' type attribute of a script tag (if block==3)
" blocktagind indent for current opening (get) and closing (set)
" blocktag (if block!=0)
" blocklnr lnum of starting blocktag (if block!=0)
" inattr line {lnum} starts with attributes of a tag
let state = {}
let state.lnum = prevnonblank(a:lnum - 1)
let state.scripttype = ""
let state.blocktagind = -1
let state.block = 0
let state.baseindent = 0
let state.blocklnr = 0
let state.inattr = 0
if state.lnum == 0
return state
endif
" Heuristic:
" remember startline state.lnum
" look back for <pre, </pre, <script, </script, <style, </style tags
" remember stopline
" if opening tag found,
" assume a:lnum within block
" else
" look back in result range (stopline, startline) for comment
" \ delimiters (<!--, -->)
" if comment opener found,
" assume a:lnum within comment
" else
" assume usual html for a:lnum
" if a:lnum-1 has a closing comment
" look back to get indent of comment opener
" FI
" look back for blocktag
call cursor(a:lnum, 1)
let [stopline, stopcol] = searchpos('\c<\zs\/\=\%(pre\>\|script\>\|style\>\)', "bW")
" fugly ... why isn't there searchstr()
let tagline = tolower(getline(stopline))
let blocktag = matchstr(tagline, '\/\=\%(pre\>\|script\>\|style\>\)', stopcol-1)
if stopline > 0 && blocktag[0] != "/"
" opening tag found, assume a:lnum within block
let state.block = s:indent_tags[blocktag]
if state.block == 3
let state.scripttype = s:GetScriptType(matchstr(tagline, '\>[^>]*', stopcol))
endif
let state.blocklnr = stopline
" check preceding tags in the line:
let s:altline = tagline[: stopcol-2]
call s:CountITags(1)
let state.blocktagind = indent(stopline) + (s:curind + s:nextrel) * s:ShiftWidth()
return state
elseif stopline == state.lnum
" handle special case: previous line (= state.lnum) contains a
" closing blocktag which is preceded by line-noise;
" blocktag == "/..."
let swendtag = match(tagline, '^\s*</') >= 0
if !swendtag
let [bline, bcol] = searchpos('<'.blocktag[1:].'\>', "bW")
let s:altline = tolower(getline(bline)[: bcol-2])
call s:CountITags(1)
let state.baseindent = indent(bline) + (s:nextrel+s:curline) * s:ShiftWidth()
return state
endif
endif
" else look back for comment
call cursor(a:lnum, 1)
let [comline, comcol, found] = searchpos('\(<!--\)\|-->', 'bpW', stopline)
if found == 2
" comment opener found, assume a:lnum within comment
let state.block = 5
let state.blocklnr = comline
" check preceding tags in the line:
let s:altline = tolower(getline(comline)[: comcol-2])
call s:CountITags(1)
let state.blocktagind = indent(comline) + (s:curind + s:nextrel) * s:ShiftWidth()
return state
endif
" else within usual html
let s:altline = tolower(getline(state.lnum))
" check a:lnum-1 for closing comment (we need indent from the opening line)
let comcol = stridx(s:altline, '-->')
if comcol >= 0
call cursor(state.lnum, comcol+1)
let [comline, comcol] = searchpos('<!--', 'bW')
if comline == state.lnum
let s:altline = s:altline[: comcol-2]
else
let s:altline = tolower(getline(comline)[: comcol-2])
endif
call s:CountITags(1)
let state.baseindent = indent(comline) + (s:nextrel+s:curline) * s:ShiftWidth()
return state
" TODO check tags that follow "-->"
endif
" else no comments
call s:CountITags(1)
let state.baseindent = indent(state.lnum) + s:nextrel * s:ShiftWidth()
" line starts with end tag
let swendtag = match(s:altline, '^\s*</') >= 0
if !swendtag
let state.baseindent += s:curind * s:ShiftWidth()
endif
return state
endfunc "}}}
func! s:Alien2() "{{{
" <pre> block
return -1
endfunc "}}}
func! s:Alien3() "{{{
" <script> javascript
if prevnonblank(v:lnum-1) == b:indent.blocklnr
" indent for the first line after <script>
return eval(s:js1indent)
endif
if b:indent.scripttype == "javascript"
return cindent(v:lnum)
else
return -1
endif
endfunc "}}}
func! s:Alien4() "{{{
" <style>
if prevnonblank(v:lnum-1) == b:indent.blocklnr
" indent for first content line
return eval(s:css1indent)
endif
return s:CSSIndent()
endfunc
func! s:CSSIndent() "{{{
" adopted $VIMRUNTIME/indent/css.vim
if getline(v:lnum) =~ '^\s*[*}]'
return cindent(v:lnum)
endif
let minline = b:indent.blocklnr
let pnum = s:css_prevnoncomment(v:lnum - 1, minline)
if pnum <= minline
" < is to catch errors
" indent for first content line after comments
return eval(s:css1indent)
endif
let ind = indent(pnum) + s:css_countbraces(pnum, 1) * s:ShiftWidth()
let pline = getline(pnum)
if pline =~ '}\s*$'
let ind -= (s:css_countbraces(pnum, 0) - (pline =~ '^\s*}')) * s:ShiftWidth()
endif
return ind
endfunc "}}}
func! s:css_prevnoncomment(lnum, stopline) "{{{
" caller starts from a line a:lnum-1 that is not a comment
let lnum = prevnonblank(a:lnum)
let ccol = match(getline(lnum), '\*/')
if ccol < 0
return lnum
endif
call cursor(lnum, ccol+1)
let lnum = search('/\*', 'bW', a:stopline)
if indent(".") == virtcol(".")-1
return prevnonblank(lnum-1)
else
return lnum
endif
endfunc "}}}
func! s:css_countbraces(lnum, count_open) "{{{
let brs = substitute(getline(a:lnum),'[''"].\{-}[''"]\|/\*.\{-}\*/\|/\*.*$\|[^{}]','','g')
let n_open = 0
let n_close = 0
for brace in split(brs, '\zs')
if brace == "{"
let n_open += 1
elseif brace == "}"
if n_open > 0
let n_open -= 1
else
let n_close += 1
endif
endif
endfor
return a:count_open ? n_open : n_close
endfunc "}}}
"}}}
func! s:Alien5() "{{{
" <!-- -->
return -1
endfunc "}}}
func! HtmlIndent() "{{{
let s:curline = tolower(getline(v:lnum))
let indentunit = s:ShiftWidth()
let s:newstate = {}
let s:newstate.lnum = v:lnum
" does the line start with a closing tag?
let swendtag = match(s:curline, '^\s*</') >= 0
if prevnonblank(v:lnum-1) == b:indent.lnum && s:usestate
" use state (continue from previous line)
else
" start over (know nothing)
let b:indent = s:FreshState(v:lnum)
endif
if b:indent.block >= 2
" within block
let endtag = s:endtags[b:indent.block-2]
let blockend = stridx(s:curline, endtag)
if blockend >= 0
" block ends here
let s:newstate.block = 0
" calc indent for REST OF LINE (may start more blocks):
let s:curline = strpart(s:curline, blockend+strlen(endtag))
call s:CountITags()
if swendtag && b:indent.block != 5
let indent = b:indent.blocktagind + s:curind * indentunit
let s:newstate.baseindent = indent + s:nextrel * indentunit
else
let indent = s:Alien{b:indent.block}()
let s:newstate.baseindent = b:indent.blocktagind + s:nextrel * indentunit
endif
call extend(b:indent, s:newstate, "force")
return indent
else
" block continues
" indent this line with alien method
let indent = s:Alien{b:indent.block}()
call extend(b:indent, s:newstate, "force")
return indent
endif
else
" not within a block - within usual html
" if < 2 then always 0
let s:newstate.block = b:indent.block
call s:CountITags()
if swendtag
let indent = b:indent.baseindent + s:curind * indentunit
let s:newstate.baseindent = indent + s:nextrel * indentunit
else
let indent = b:indent.baseindent
let s:newstate.baseindent = indent + (s:curind + s:nextrel) * indentunit
endif
call extend(b:indent, s:newstate, "force")
return indent
endif
endfunc "}}}
" check user settings (first time), clear cpo, Modeline: {{{1
" DEBUG:
com! -nargs=* IndHtmlLocal <args>
call HtmlIndent_CheckUserSettings()
let &cpo = s:cpo_save
unlet s:cpo_save
" vim:set fdm=marker ts=8:
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