path: root/runtime/autoload/htmlcomplete.vim

" Vim completion script
" Language:	HTML and XHTML
" Maintainer:	Mikolaj Machowski ( mikmach AT wp DOT pl )
" Last Change:	2006 Apr 24

function! htmlcomplete#CompleteTags(findstart, base)
  if a:findstart
    " locate the start of the word
    let line = getline('.')
    let start = col('.') - 1
	let curline = line('.')
	let compl_begin = col('.') - 2
    while start >= 0 && line[start - 1] =~ '\(\k\|[!:.-]\)'
		let start -= 1
    endwhile
	" Handling of entities {{{
	if start >= 0 && line[start - 1] =~ '&'
		let b:entitiescompl = 1
		let b:compl_context = ''
		return start
	endif
	" }}}
	" Handling of <style> tag {{{
	let stylestart = searchpair('<style\>', '', '<\/style\>', "bnW")
	let styleend   = searchpair('<style\>', '', '<\/style\>', "nW")
	if stylestart != 0 && styleend != 0 
		if stylestart <= curline && styleend >= curline
			let start = col('.') - 1
			let b:csscompl = 1
			while start >= 0 && line[start - 1] =~ '\(\k\|-\)'
				let start -= 1
			endwhile
		endif
	endif
	" }}}
	" Handling of <script> tag {{{
	let scriptstart = searchpair('<script\>', '', '<\/script\>', "bnW")
	let scriptend   = searchpair('<script\>', '', '<\/script\>', "nW")
	if scriptstart != 0 && scriptend != 0 
		if scriptstart <= curline && scriptend >= curline
			let start = col('.') - 1
			let b:jscompl = 1
			let b:jsrange = [scriptstart, scriptend]
			while start >= 0 && line[start - 1] =~ '\k'
				let start -= 1
			endwhile
			" We are inside of <script> tag. But we should also get contents
			" of all linked external files and (secondary, less probably) other <script> tags
			" This logic could possible be done in separate function - may be
			" reused in events scripting (also with option could be reused for
			" CSS
			let b:js_extfiles = []
			let l = line('.')
			let c = col('.')
			call cursor(1,1)
			while search('<\@<=script\>', 'W') && line('.') <= l
				if synIDattr(synID(line('.'),col('.')-1,0),"name") !~? 'comment'
					let sname = matchstr(getline('.'), '<script[^>]*src\s*=\s*\([''"]\)\zs.\{-}\ze\1')
					if filereadable(sname)
						let b:js_extfiles += readfile(sname)
					endif
				endif
			endwhile
			call cursor(1,1)
			let js_scripttags = []
			while search('<script\>', 'W') && line('.') < l
				if matchstr(getline('.'), '<script[^>]*src') == ''
					let js_scripttag = getline(line('.'), search('</script>', 'W'))
					let js_scripttags += js_scripttag
				endif
			endwhile
			let b:js_extfiles += js_scripttags
			call cursor(l,c)
			unlet! l c
		endif
	endif
	" }}}
	if !exists("b:csscompl") && !exists("b:jscompl")
		let b:compl_context = getline('.')[0:(compl_begin)]
		if b:compl_context !~ '<[^>]*$'
			" Look like we may have broken tag. Check previous lines.
			let i = 1
			while 1
				let context_line = getline(curline-i)
				if context_line =~ '<[^>]*$'
					" Yep, this is this line
					let context_lines = getline(curline-i, curline)
					let b:compl_context = join(context_lines, ' ')
					break
				elseif context_line =~ '>[^<]*$' || i == curline
					" We are in normal tag line, no need for completion at all
					" OR reached first line without tag at all
					let b:compl_context = ''
					break
				endif
				let i += 1
			endwhile
			" Make sure we don't have counter
			unlet! i
		endif
		let b:compl_context = matchstr(b:compl_context, '.*\zs<.*')

		" Return proper start for on-events. Without that beginning of
		" completion will be badly reported
		if b:compl_context =~? 'on[a-z]*\s*=\s*\(''[^'']*\|"[^"]*\)$'
			let start = col('.') - 1
			while start >= 0 && line[start - 1] =~ '\k'
				let start -= 1
			endwhile
		endif
		" If b:compl_context begins with <? we are inside of PHP code. It
		" wasn't closed so PHP completion passed it to HTML 
		if &filetype =~? 'php' && b:compl_context =~ '^<?'
			let b:phpcompl = 1
			let start = col('.') - 1
			while start >= 0 && line[start - 1] =~ '[a-zA-Z_0-9\x7f-\xff$]'
				let start -= 1
			endwhile
		endif
	else
		let b:compl_context = getline('.')[0:compl_begin]
	endif
    return start
  else
	" Initialize base return lists
    let res = []
    let res2 = []
	" a:base is very short - we need context
	let context = b:compl_context
	" Check if we should do CSS completion inside of <style> tag
	" or JS completion inside of <script> tag or PHP completion in case of <?
	" tag AND &ft==php
	if exists("b:csscompl")
		unlet! b:csscompl
		let context = b:compl_context
		unlet! b:compl_context
		return csscomplete#CompleteCSS(0, context)
	elseif exists("b:jscompl")
		unlet! b:jscompl
		return javascriptcomplete#CompleteJS(0, a:base)
	elseif exists("b:phpcompl")
		unlet! b:phpcompl
		let context = b:compl_context
		return phpcomplete#CompletePHP(0, a:base)
	else
		if len(b:compl_context) == 0 && !exists("b:entitiescompl")
			return []
		endif
		let context = matchstr(b:compl_context, '.\zs.*')
	endif
	unlet! b:compl_context
	" Entities completion {{{
	if exists("b:entitiescompl")
		unlet! b:entitiescompl

		if !exists("b:html_doctype")
			call htmlcomplete#CheckDoctype()
		endif
		if !exists("b:html_omni")
			"runtime! autoload/xml/xhtml10s.vim
			call htmlcomplete#LoadData()
		endif

	    let entities =  b:html_omni['vimxmlentities']

		if len(a:base) == 1
			for m in entities
				if m =~ '^'.a:base
					call add(res, m.';')
				endif
			endfor
			return res
		else
			for m in entities
				if m =~? '^'.a:base
					call add(res, m.';')
				elseif m =~? a:base
					call add(res2, m.';')
				endif
			endfor

			return res + res2
		endif


	endif
	" }}}
	if context =~ '>'
		" Generally if context contains > it means we are outside of tag and
		" should abandon action - with one exception: <style> span { bo
		if context =~ 'style[^>]\{-}>[^<]\{-}$'
			return csscomplete#CompleteCSS(0, context)
		elseif context =~ 'script[^>]\{-}>[^<]\{-}$'
			let b:jsrange = [line('.'), search('<\/script\>', 'nW')]
			return javascriptcomplete#CompleteJS(0, context)
		else
			return []
		endif
	endif

	" If context contains > it means we are already outside of tag and we
	" should abandon action
	" If context contains white space it is attribute. 
	" It can be also value of attribute.
	" We have to get first word to offer proper completions
	if context == ''
		let tag = ''
	else
		let tag = split(context)[0]
		" Detect if tag is uppercase to return in proper case,
		" we need to make it lowercase for processing
		if tag =~ '^[A-Z]*$'
			let uppercase_tag = 1
			let tag = tolower(tag)
		else
			let uppercase_tag = 0
		endif
	endif
	" Get last word, it should be attr name
	let attr = matchstr(context, '.*\s\zs.*')
	" Possible situations where any prediction would be difficult:
	" 1. Events attributes
	if context =~ '\s'
		" Sort out style, class, and on* cases
		if context =~? "\\(on[a-z]*\\|id\\|style\\|class\\)\\s*=\\s*[\"']"
			" Id, class completion {{{
			if context =~? "\\(id\\|class\\)\\s*=\\s*[\"'][a-zA-Z0-9_ -]*$"
				if context =~? "class\\s*=\\s*[\"'][a-zA-Z0-9_ -]*$"
					let search_for = "class"
				elseif context =~? "id\\s*=\\s*[\"'][a-zA-Z0-9_ -]*$"
					let search_for = "id"
				endif
				" Handle class name completion
				" 1. Find lines of <link stylesheet>
				" 1a. Check file for @import
				" 2. Extract filename(s?) of stylesheet,
				call cursor(1,1)
				let head = getline(search('<head\>'), search('<\/head>'))
				let headjoined = join(copy(head), ' ')
				if headjoined =~ '<style'
					" Remove possibly confusing CSS operators
					let stylehead = substitute(headjoined, '+>\*[,', ' ', 'g')
					if search_for == 'class'
						let styleheadlines = split(stylehead)
						let headclasslines = filter(copy(styleheadlines), "v:val =~ '\\([a-zA-Z0-9:]\\+\\)\\?\\.[a-zA-Z0-9_-]\\+'")
					else
						let stylesheet = split(headjoined, '[{}]')
						" Get all lines which fit id syntax
						let classlines = filter(copy(stylesheet), "v:val =~ '#[a-zA-Z0-9_-]\\+'")
						" Filter out possible color definitions
						call filter(classlines, "v:val !~ ':\\s*#[a-zA-Z0-9_-]\\+'")
						" Filter out complex border definitions
						call filter(classlines, "v:val !~ '\\(none\\|hidden\\|dotted\\|dashed\\|solid\\|double\\|groove\\|ridge\\|inset\\|outset\\)\\s*#[a-zA-Z0-9_-]\\+'")
						let templines = join(classlines, ' ')
						let headclasslines = split(templines)
						call filter(headclasslines, "v:val =~ '#[a-zA-Z0-9_-]\\+'")
					endif
					let internal = 1
				else
					let internal = 0
				endif
				let styletable = []
				let secimportfiles = []
				let filestable = filter(copy(head), "v:val =~ '\\(@import\\|link.*stylesheet\\)'")
				for line in filestable
					if line =~ "@import"
						let styletable += [matchstr(line, "import\\s\\+\\(url(\\)\\?[\"']\\?\\zs\\f\\+\\ze")]
					elseif line