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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 08:50:31 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 08:50:31 +0000
commitaed8ce9da277f5ecffe968b324f242c41c3b752a (patch)
treed2e538394cb7a8a7c42a4aac6ccf1a8e3256999b /runtime/indent/html.vim
parentInitial commit. (diff)
downloadvim-aed8ce9da277f5ecffe968b324f242c41c3b752a.tar.xz
vim-aed8ce9da277f5ecffe968b324f242c41c3b752a.zip
Adding upstream version 2:9.0.1378.upstream/2%9.0.1378upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'runtime/indent/html.vim')
-rw-r--r--runtime/indent/html.vim1094
1 files changed, 1094 insertions, 0 deletions
diff --git a/runtime/indent/html.vim b/runtime/indent/html.vim
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+" Vim indent script for HTML
+" Maintainer: Bram Moolenaar
+" Original Author: Andy Wokula <anwoku@yahoo.de>
+" Last Change: 2022 Jan 31
+" Version: 1.0 "{{{
+" Description: HTML indent script with cached state for faster indenting on a
+" range of lines.
+" Supports template systems through hooks.
+" Supports Closure stylesheets.
+"
+" Credits:
+" indent/html.vim (2006 Jun 05) from J. Zellner
+" indent/css.vim (2006 Dec 20) from N. Weibull
+"
+" History:
+" 2014 June (v1.0) overhaul (Bram)
+" 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
+
+" Load the Javascript indent script first, it defines GetJavascriptIndent().
+" Undo the rest.
+" Load base python indent.
+if !exists('*GetJavascriptIndent')
+ runtime! indent/javascript.vim
+endif
+let b:did_indent = 1
+
+setlocal indentexpr=HtmlIndent()
+setlocal indentkeys=o,O,<Return>,<>>,{,},!^F
+
+" Needed for % to work when finding start/end of a tag.
+setlocal matchpairs+=<:>
+
+let b:undo_indent = "setlocal inde< indk<"
+
+" b:hi_indent keeps state to speed up indenting consecutive lines.
+let b:hi_indent = {"lnum": -1}
+
+"""""" Code below this is loaded only once. """""
+if exists("*HtmlIndent") && !exists('g:force_reload_html')
+ call HtmlIndent_CheckUserSettings()
+ finish
+endif
+
+" Allow for line continuation below.
+let s:cpo_save = &cpo
+set cpo-=C
+"}}}
+
+" Pattern to match the name of a tag, including custom elements.
+let s:tagname = '\w\+\(-\w\+\)*'
+
+" Check and process settings from b:html_indent and g:html_indent... variables.
+" Prefer using buffer-local settings over global settings, so that there can
+" be defaults for all HTML files and exceptions for specific types of HTML
+" files.
+func HtmlIndent_CheckUserSettings()
+ "{{{
+ let inctags = ''
+ if exists("b:html_indent_inctags")
+ let inctags = b:html_indent_inctags
+ elseif exists("g:html_indent_inctags")
+ let inctags = g:html_indent_inctags
+ endif
+ let b:hi_tags = {}
+ if len(inctags) > 0
+ call s:AddITags(b:hi_tags, split(inctags, ","))
+ endif
+
+ let autotags = ''
+ if exists("b:html_indent_autotags")
+ let autotags = b:html_indent_autotags
+ elseif exists("g:html_indent_autotags")
+ let autotags = g:html_indent_autotags
+ endif
+ let b:hi_removed_tags = {}
+ if len(autotags) > 0
+ call s:RemoveITags(b:hi_removed_tags, split(autotags, ","))
+ endif
+
+ " Syntax names indicating being inside a string of an attribute value.
+ let string_names = []
+ if exists("b:html_indent_string_names")
+ let string_names = b:html_indent_string_names
+ elseif exists("g:html_indent_string_names")
+ let string_names = g:html_indent_string_names
+ endif
+ let b:hi_insideStringNames = ['htmlString']
+ if len(string_names) > 0
+ for s in string_names
+ call add(b:hi_insideStringNames, s)
+ endfor
+ endif
+
+ " Syntax names indicating being inside a tag.
+ let tag_names = []
+ if exists("b:html_indent_tag_names")
+ let tag_names = b:html_indent_tag_names
+ elseif exists("g:html_indent_tag_names")
+ let tag_names = g:html_indent_tag_names
+ endif
+ let b:hi_insideTagNames = ['htmlTag', 'htmlScriptTag']
+ if len(tag_names) > 0
+ for s in tag_names
+ call add(b:hi_insideTagNames, s)
+ endfor
+ endif
+
+ let indone = {"zero": 0
+ \,"auto": "indent(prevnonblank(v:lnum-1))"
+ \,"inc": "b:hi_indent.blocktagind + shiftwidth()"}
+
+ let script1 = ''
+ if exists("b:html_indent_script1")
+ let script1 = b:html_indent_script1
+ elseif exists("g:html_indent_script1")
+ let script1 = g:html_indent_script1
+ endif
+ if len(script1) > 0
+ let b:hi_js1indent = get(indone, script1, indone.zero)
+ else
+ let b:hi_js1indent = 0
+ endif
+
+ let style1 = ''
+ if exists("b:html_indent_style1")
+ let style1 = b:html_indent_style1
+ elseif exists("g:html_indent_style1")
+ let style1 = g:html_indent_style1
+ endif
+ if len(style1) > 0
+ let b:hi_css1indent = get(indone, style1, indone.zero)
+ else
+ let b:hi_css1indent = 0
+ endif
+
+ if !exists('b:html_indent_line_limit')
+ if exists('g:html_indent_line_limit')
+ let b:html_indent_line_limit = g:html_indent_line_limit
+ else
+ let b:html_indent_line_limit = 200
+ endif
+ endif
+
+ if exists('b:html_indent_attribute')
+ let b:hi_attr_indent = b:html_indent_attribute
+ elseif exists('g:html_indent_attribute')
+ let b:hi_attr_indent = g:html_indent_attribute
+ else
+ let b:hi_attr_indent = 2
+ endif
+
+endfunc "}}}
+
+" Init Script Vars
+"{{{
+let b:hi_lasttick = 0
+let b:hi_newstate = {}
+let s:countonly = 0
+ "}}}
+
+" Fill the s:indent_tags dict with known tags.
+" The key is "tagname" or "/tagname". {{{
+" The value is:
+" 1 opening tag
+" 2 "pre"
+" 3 "script"
+" 4 "style"
+" 5 comment start
+" 6 conditional comment start
+" -1 closing tag
+" -2 "/pre"
+" -3 "/script"
+" -4 "/style"
+" -5 comment end
+" -6 conditional comment end
+let s:indent_tags = {}
+let s:endtags = [0,0,0,0,0,0,0] " long enough for the highest index
+"}}}
+
+" Add a list of tag names for a pair of <tag> </tag> to "tags".
+func s:AddITags(tags, taglist)
+ "{{{
+ for itag in a:taglist
+ let a:tags[itag] = 1
+ let a:tags['/' . itag] = -1
+ endfor
+endfunc "}}}
+
+" Take a list of tag name pairs that are not to be used as tag pairs.
+func s:RemoveITags(tags, taglist)
+ "{{{
+ for itag in a:taglist
+ let a:tags[itag] = 1
+ let a:tags['/' . itag] = 1
+ endfor
+endfunc "}}}
+
+" Add a block tag, that is a tag with a different kind of indenting.
+func s:AddBlockTag(tag, id, ...)
+ "{{{
+ if !(a:id >= 2 && a:id < len(s:endtags))
+ echoerr 'AddBlockTag ' . a:id
+ 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] = "</" . a:tag . ">"
+ else
+ let s:indent_tags[a:1] = -a:id
+ let s:endtags[a:id] = a:1
+ endif
+endfunc "}}}
+
+" Add known tag pairs.
+" Self-closing tags and tags that are sometimes {{{
+" self-closing (e.g., <p>) are not here (when encountering </p> we can find
+" the matching <p>, but not the other way around).
+" Known self-closing tags: " 'p', 'img', 'source', 'area', 'keygen', 'track',
+" 'wbr'.
+" Old HTML tags:
+call s:AddITags(s:indent_tags, [
+ \ 'a', 'abbr', 'acronym', 'address', 'b', 'bdo', 'big',
+ \ 'blockquote', 'body', 'button', 'caption', 'center', 'cite', 'code',
+ \ 'colgroup', 'dd', 'del', 'dfn', 'dir', 'div', 'dl', 'dt', 'em', 'fieldset', 'font',
+ \ 'form', 'frameset', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'head', 'html',
+ \ 'i', 'iframe', 'ins', 'kbd', 'label', 'legend', 'li',
+ \ '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', 'tbody', 'tfoot', 'thead'])
+
+" New HTML5 elements:
+call s:AddITags(s:indent_tags, [
+ \ 'article', 'aside', 'audio', 'bdi', 'canvas', 'command', 'data',
+ \ 'datalist', 'details', 'dialog', 'embed', 'figcaption', 'figure',
+ \ 'footer', 'header', 'hgroup', 'main', 'mark', 'meter', 'nav', 'output',
+ \ 'picture', 'progress', 'rp', 'rt', 'ruby', 'section', 'summary',
+ \ 'svg', 'time', 'video'])
+
+" Tags added for web components:
+call s:AddITags(s:indent_tags, [
+ \ 'content', 'shadow', 'template'])
+"}}}
+
+" Add Block Tags: these contain alien content
+"{{{
+call s:AddBlockTag('pre', 2)
+call s:AddBlockTag('script', 3)
+call s:AddBlockTag('style', 4)
+call s:AddBlockTag('<!--', 5, '-->')
+call s:AddBlockTag('<!--[', 6, '![endif]-->')
+"}}}
+
+" Return non-zero when "tagname" is an opening tag, not being a block tag, for
+" which there should be a closing tag. Can be used by scripts that include
+" HTML indenting.
+func HtmlIndent_IsOpenTag(tagname)
+ "{{{
+ if get(s:indent_tags, a:tagname) == 1
+ return 1
+ endif
+ return get(b:hi_tags, a:tagname) == 1
+endfunc "}}}
+
+" Get the value for "tagname", taking care of buffer-local tags.
+func s:get_tag(tagname)
+ "{{{
+ let i = get(s:indent_tags, a:tagname)
+ if (i == 1 || i == -1) && get(b:hi_removed_tags, a:tagname) != 0
+ return 0
+ endif
+ if i == 0
+ let i = get(b:hi_tags, a:tagname)
+ endif
+ return i
+endfunc "}}}
+
+" Count the number of start and end tags in "text".
+func s:CountITags(text)
+ "{{{
+ " Store the result in s:curind and s:nextrel.
+ let s:curind = 0 " relative indent steps for current line [unit &sw]:
+ let s:nextrel = 0 " relative indent steps for next line [unit &sw]:
+ let s:block = 0 " assume starting outside of a block
+ let s:countonly = 1 " don't change state
+ call substitute(a:text, '<\zs/\=' . s:tagname . '\>\|<!--\[\|\[endif\]-->\|<!--\|-->', '\=s:CheckTag(submatch(0))', 'g')
+ let s:countonly = 0
+endfunc "}}}
+
+" Count the number of start and end tags in text.
+func s:CountTagsAndState(text)
+ "{{{
+ " Store the result in s:curind and s:nextrel. Update b:hi_newstate.block.
+ let s:curind = 0 " relative indent steps for current line [unit &sw]:
+ let s:nextrel = 0 " relative indent steps for next line [unit &sw]:
+
+ let s:block = b:hi_newstate.block
+ let tmp = substitute(a:text, '<\zs/\=' . s:tagname . '\>\|<!--\[\|\[endif\]-->\|<!--\|-->', '\=s:CheckTag(submatch(0))', 'g')
+ if s:block == 3
+ let b:hi_newstate.scripttype = s:GetScriptType(matchstr(tmp, '\C.*<SCRIPT\>\zs[^>]*'))
+ endif
+ let b:hi_newstate.block = s:block
+endfunc "}}}
+
+" Used by s:CountITags() and s:CountTagsAndState().
+func s:CheckTag(itag)
+ "{{{
+ " Returns an empty string or "SCRIPT".
+ " a:itag can be "tag" or "/tag" or "<!--" or "-->"
+ if (s:CheckCustomTag(a:itag))
+ return ""
+ endif
+ let ind = s:get_tag(a:itag)
+ if ind == -1
+ " closing tag
+ if s:block != 0
+ " ignore itag within a block
+ return ""
+ endif
+ if s:nextrel == 0
+ let s:curind -= 1
+ else
+ let s:nextrel -= 1
+ endif
+ elseif ind == 1
+ " opening tag
+ if s:block != 0
+ return ""
+ endif
+ let s:nextrel += 1
+ elseif ind != 0
+ " block-tag (opening or closing)
+ return s:CheckBlockTag(a:itag, ind)
+ " else ind==0 (other tag found): keep indent
+ endif
+ return ""
+endfunc "}}}
+
+" Used by s:CheckTag(). Returns an empty string or "SCRIPT".
+func s:CheckBlockTag(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 ""
+ endif
+ let s:block = a:ind " block type
+ if s:countonly
+ return ""
+ endif
+ let b:hi_newstate.blocklnr = v:lnum
+ " save allover indent for the endtag
+ let b:hi_newstate.blocktagind = b:hi_indent.baseindent + (s:nextrel + s:curind) * 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 a block-tag on the same line
+ endif
+ return ""
+endfunc "}}}
+
+" Used by s:CheckTag().
+func s:CheckCustomTag(ctag)
+ "{{{
+ " Returns 1 if ctag is the tag for a custom element, 0 otherwise.
+ " a:ctag can be "tag" or "/tag" or "<!--" or "-->"
+ let pattern = '\%\(\w\+-\)\+\w\+'
+ if match(a:ctag, pattern) == -1
+ return 0
+ endif
+ if matchstr(a:ctag, '\/\ze.\+') == "/"
+ " closing tag
+ if s:block != 0
+ " ignore ctag within a block
+ return 1
+ endif
+ if s:nextrel == 0
+ let s:curind -= 1
+ else
+ let s:nextrel -= 1
+ endif
+ else
+ " opening tag
+ if s:block != 0
+ return 1
+ endif
+ let s:nextrel += 1
+ endif
+ return 1
+endfunc "}}}
+
+" Return the <script> type: either "javascript" or ""
+func s:GetScriptType(str)
+ "{{{
+ if a:str == "" || a:str =~ "java"
+ return "javascript"
+ else
+ return ""
+ endif
+endfunc "}}}
+
+" Look back in the file, starting at a:lnum - 1, to compute a state for the
+" start of line a:lnum. Return the new state.
+func s:FreshState(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).
+ " TODO: this should be split up in detecting the block type and computing the
+ " indent for the block type, so that when we do not know the indent we do
+ " not need to clear the whole state and re-detect the block type again.
+ " 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:<!--, 6:<!--[
+ " 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 a blocktag
+ let stopline2 = v:lnum + 1
+ if has_key(b:hi_indent, 'block') && b:hi_indent.block > 5
+ let [stopline2, stopcol2] = searchpos('<!--', 'bnW')
+ endif
+ let [stopline, stopcol] = searchpos('\c<\zs\/\=\%(pre\>\|script\>\|style\>\)', "bnW")
+ if stopline > 0 && stopline < stopline2
+ " ugly ... why isn't there searchstr()
+ let tagline = tolower(getline(stopline))
+ let blocktag = matchstr(tagline, '\/\=\%(pre\>\|script\>\|style\>\)', stopcol - 1)
+ if 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:
+ call s:CountITags(tagline[: stopcol-2])
+ let state.blocktagind = indent(stopline) + (s:curind + s:nextrel) * 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:].'\>', "bnW")
+ call s:CountITags(tolower(getline(bline)[: bcol-2]))
+ let state.baseindent = indent(bline) + (s:curind + s:nextrel) * shiftwidth()
+ return state
+ endif
+ endif
+ endif
+ if stopline > stopline2
+ let stopline = stopline2
+ let stopcol = stopcol2
+ endif
+
+ " else look back for comment
+ let [comlnum, comcol, found] = searchpos('\(<!--\[\)\|\(<!--\)\|-->', 'bpnW', stopline)
+ if found == 2 || found == 3
+ " comment opener found, assume a:lnum within comment
+ let state.block = (found == 3 ? 5 : 6)
+ let state.blocklnr = comlnum
+ " check preceding tags in the line:
+ call s:CountITags(tolower(getline(comlnum)[: comcol-2]))
+ if found == 2
+ let state.baseindent = b:hi_indent.baseindent
+ endif
+ let state.blocktagind = indent(comlnum) + (s:curind + s:nextrel) * shiftwidth()
+ return state
+ endif
+
+ " else within usual HTML
+ let text = tolower(getline(state.lnum))
+
+ " Check a:lnum-1 for closing comment (we need indent from the opening line).
+ " Not when other tags follow (might be --> inside a string).
+ let comcol = stridx(text, '-->')
+ if comcol >= 0 && match(text, '[<>]', comcol) <= 0
+ call cursor(state.lnum, comcol + 1)
+ let [comlnum, comcol] = searchpos('<!--', 'bW')
+ if comlnum == state.lnum
+ let text = text[: comcol-2]
+ else
+ let text = tolower(getline(comlnum)[: comcol-2])
+ endif
+ call s:CountITags(text)
+ let state.baseindent = indent(comlnum) + (s:curind + s:nextrel) * shiftwidth()
+ " TODO check tags that follow "-->"
+ return state
+ endif
+
+ " Check if the previous line starts with end tag.
+ let swendtag = match(text, '^\s*</') >= 0
+
+ " If previous line ended in a closing tag, line up with the opening tag.
+ if !swendtag && text =~ '</' . s:tagname . '\s*>\s*$'
+ call cursor(state.lnum, 99999)
+ normal! F<
+ let start_lnum = HtmlIndent_FindStartTag()
+ if start_lnum > 0
+ let state.baseindent = indent(start_lnum)
+ if col('.') > 2
+ " check for tags before the matching opening tag.
+ let text = getline(start_lnum)
+ let swendtag = match(text, '^\s*</') >= 0
+ call s:CountITags(text[: col('.') - 2])
+ let state.baseindent += s:nextrel * shiftwidth()
+ if !swendtag
+ let state.baseindent += s:curind * shiftwidth()
+ endif
+ endif
+ return state
+ endif
+ endif
+
+ " Else: no comments. Skip backwards to find the tag we're inside.
+ let [state.lnum, found] = HtmlIndent_FindTagStart(state.lnum)
+ " Check if that line starts with end tag.
+ let text = getline(state.lnum)
+ let swendtag = match(text, '^\s*</') >= 0
+ call s:CountITags(tolower(text))
+ let state.baseindent = indent(state.lnum) + s:nextrel * shiftwidth()
+ if !swendtag
+ let state.baseindent += s:curind * shiftwidth()
+ endif
+ return state
+endfunc "}}}
+
+" Indent inside a <pre> block: Keep indent as-is.
+func s:Alien2()
+ "{{{
+ return -1
+endfunc "}}}
+
+" Return the indent inside a <script> block for javascript.
+func s:Alien3()
+ "{{{
+ let lnum = prevnonblank(v:lnum - 1)
+ while lnum > 1 && getline(lnum) =~ '^\s*/[/*]'
+ " Skip over comments to avoid that cindent() aligns with the <script> tag
+ let lnum = prevnonblank(lnum - 1)
+ endwhile
+ if lnum < b:hi_indent.blocklnr
+ " indent for <script> itself
+ return b:hi_indent.blocktagind
+ endif
+ if lnum == b:hi_indent.blocklnr
+ " indent for the first line after <script>
+ return eval(b:hi_js1indent)
+ endif
+ if b:hi_indent.scripttype == "javascript"
+ " indent for further lines
+ return GetJavascriptIndent()
+ else
+ return -1
+ endif
+endfunc "}}}
+
+" Return the indent inside a <style> block.
+func s:Alien4()
+ "{{{
+ if prevnonblank(v:lnum-1) == b:hi_indent.blocklnr
+ " indent for first content line
+ return eval(b:hi_css1indent)
+ endif
+ return s:CSSIndent()
+endfunc "}}}
+
+" Indending inside a <style> block. Returns the indent.
+func s:CSSIndent()
+ "{{{
+ " This handles standard CSS and also Closure stylesheets where special lines
+ " start with @.
+ " When the line starts with '*' or the previous line starts with "/*"
+ " and does not end in "*/", use C indenting to format the comment.
+ " Adopted $VIMRUNTIME/indent/css.vim
+ let curtext = getline(v:lnum)
+ if curtext =~ '^\s*[*]'
+ \ || (v:lnum > 1 && getline(v:lnum - 1) =~ '\s*/\*'
+ \ && getline(v:lnum - 1) !~ '\*/\s*$')
+ return cindent(v:lnum)
+ endif
+
+ let min_lnum = b:hi_indent.blocklnr
+ let prev_lnum = s:CssPrevNonComment(v:lnum - 1, min_lnum)
+ let [prev_lnum, found] = HtmlIndent_FindTagStart(prev_lnum)
+ if prev_lnum <= min_lnum
+ " Just below the <style> tag, indent for first content line after comments.
+ return eval(b:hi_css1indent)
+ endif
+
+ " If the current line starts with "}" align with its match.
+ if curtext =~ '^\s*}'
+ call cursor(v:lnum, 1)
+ try
+ normal! %
+ " Found the matching "{", align with it after skipping unfinished lines.
+ let align_lnum = s:CssFirstUnfinished(line('.'), min_lnum)
+ return indent(align_lnum)
+ catch
+ " can't find it, try something else, but it's most likely going to be
+ " wrong
+ endtry
+ endif
+
+ " add indent after {
+ let brace_counts = HtmlIndent_CountBraces(prev_lnum)
+ let extra = brace_counts.c_open * shiftwidth()
+
+ let prev_text = getline(prev_lnum)
+ let below_end_brace = prev_text =~ '}\s*$'
+
+ " Search back to align with the first line that's unfinished.
+ let align_lnum = s:CssFirstUnfinished(prev_lnum, min_lnum)
+
+ " Handle continuation lines if aligning with previous line and not after a
+ " "}".
+ if extra == 0 && align_lnum == prev_lnum && !below_end_brace
+ let prev_hasfield = prev_text =~ '^\s*[a-zA-Z0-9-]\+:'
+ let prev_special = prev_text =~ '^\s*\(/\*\|@\)'
+ if curtext =~ '^\s*\(/\*\|@\)'
+ " if the current line is not a comment or starts with @ (used by template
+ " systems) reduce indent if previous line is a continuation line
+ if !prev_hasfield && !prev_special
+ let extra = -shiftwidth()
+ endif
+ else
+ let cur_hasfield = curtext =~ '^\s*[a-zA-Z0-9-]\+:'
+ let prev_unfinished = s:CssUnfinished(prev_text)
+ if prev_unfinished
+ " Continuation line has extra indent if the previous line was not a
+ " continuation line.
+ let extra = shiftwidth()
+ " Align with @if
+ if prev_text =~ '^\s*@if '
+ let extra = 4
+ endif
+ elseif cur_hasfield && !prev_hasfield && !prev_special
+ " less indent below a continuation line
+ let extra = -shiftwidth()
+ endif
+ endif
+ endif
+
+ if below_end_brace
+ " find matching {, if that line starts with @ it's not the start of a rule
+ " but something else from a template system
+ call cursor(prev_lnum, 1)
+ call search('}\s*$')
+ try
+ normal! %
+ " Found the matching "{", align with it.
+ let align_lnum = s:CssFirstUnfinished(line('.'), min_lnum)
+ let special = getline(align_lnum) =~ '^\s*@'
+ catch
+ let special = 0
+ endtry
+ if special
+ " do not reduce indent below @{ ... }
+ if extra < 0
+ let extra += shiftwidth()
+ endif
+ else
+ let extra -= (brace_counts.c_close - (prev_text =~ '^\s*}')) * shiftwidth()
+ endif
+ endif
+
+ " if no extra indent yet...
+ if extra == 0
+ if brace_counts.p_open > brace_counts.p_close
+ " previous line has more ( than ): add a shiftwidth
+ let extra = shiftwidth()
+ elseif brace_counts.p_open < brace_counts.p_close
+ " previous line has more ) than (: subtract a shiftwidth
+ let extra = -shiftwidth()
+ endif
+ endif
+
+ return indent(align_lnum) + extra
+endfunc "}}}
+
+" Inside <style>: Whether a line is unfinished.
+" tag:
+" tag: blah
+" tag: blah &&
+" tag: blah ||
+func s:CssUnfinished(text)
+ "{{{
+ return a:text =~ '\(||\|&&\|:\|\k\)\s*$'
+endfunc "}}}
+
+" Search back for the first unfinished line above "lnum".
+func s:CssFirstUnfinished(lnum, min_lnum)
+ "{{{
+ let align_lnum = a:lnum
+ while align_lnum > a:min_lnum && s:CssUnfinished(getline(align_lnum - 1))
+ let align_lnum -= 1
+ endwhile
+ return align_lnum
+endfunc "}}}
+
+" Find the non-empty line at or before "lnum" that is not a comment.
+func s:CssPrevNonComment(lnum, stopline)
+ "{{{
+ " caller starts from a line a:lnum + 1 that is not a comment
+ let lnum = prevnonblank(a:lnum)
+ while 1
+ let ccol = match(getline(lnum), '\*/')
+ if ccol < 0
+ " No comment end thus it's something else.
+ return lnum
+ endif
+ call cursor(lnum, ccol + 1)
+ " Search back for the /* that starts the comment
+ let lnum = search('/\*', 'bW', a:stopline)
+ if indent(".") == virtcol(".") - 1
+ " The found /* is at the start of the line. Now go back to the line
+ " above it and again check if it is a comment.
+ let lnum = prevnonblank(lnum - 1)
+ else
+ " /* is after something else, thus it's not a comment line.
+ return lnum
+ endif
+ endwhile
+endfunc "}}}
+
+" Check the number of {} and () in line "lnum". Return a dict with the counts.
+func HtmlIndent_CountBraces(lnum)
+ "{{{
+ let brs = substitute(getline(a:lnum), '[''"].\{-}[''"]\|/\*.\{-}\*/\|/\*.*$\|[^{}()]', '', 'g')
+ let c_open = 0
+ let c_close = 0
+ let p_open = 0
+ let p_close = 0
+ for brace in split(brs, '\zs')
+ if brace == "{"
+ let c_open += 1
+ elseif brace == "}"
+ if c_open > 0
+ let c_open -= 1
+ else
+ let c_close += 1
+ endif
+ elseif brace == '('
+ let p_open += 1
+ elseif brace == ')'
+ if p_open > 0
+ let p_open -= 1
+ else
+ let p_close += 1
+ endif
+ endif
+ endfor
+ return {'c_open': c_open,
+ \ 'c_close': c_close,
+ \ 'p_open': p_open,
+ \ 'p_close': p_close}
+endfunc "}}}
+
+" Return the indent for a comment: <!-- -->
+func s:Alien5()
+ "{{{
+ let curtext = getline(v:lnum)
+ if curtext =~ '^\s*\zs-->'
+ " current line starts with end of comment, line up with comment start.
+ call cursor(v:lnum, 0)
+ let lnum = search('<!--', 'b')
+ if lnum > 0
+ " TODO: what if <!-- is not at the start of the line?
+ return indent(lnum)
+ endif
+
+ " Strange, can't find it.
+ return -1
+ endif
+
+ let prevlnum = prevnonblank(v:lnum - 1)
+ let prevtext = getline(prevlnum)
+ let idx = match(prevtext, '^\s*\zs<!--')
+ if idx >= 0
+ " just below comment start, add a shiftwidth
+ return indent(prevlnum) + shiftwidth()
+ endif
+
+ " Some files add 4 spaces just below a TODO line. It's difficult to detect
+ " the end of the TODO, so let's not do that.
+
+ " Align with the previous non-blank line.
+ return indent(prevlnum)
+endfunc "}}}
+
+" Return the indent for conditional comment: <!--[ ![endif]-->
+func s:Alien6()
+ "{{{
+ let curtext = getline(v:lnum)
+ if curtext =~ '\s*\zs<!\[endif\]-->'
+ " current line starts with end of comment, line up with comment start.
+ let lnum = search('<!--', 'bn')
+ if lnum > 0
+ return indent(lnum)
+ endif
+ endif
+ return b:hi_indent.baseindent + shiftwidth()
+endfunc "}}}
+
+" When the "lnum" line ends in ">" find the line containing the matching "<".
+func HtmlIndent_FindTagStart(lnum)
+ "{{{
+ " Avoids using the indent of a continuation line.
+ " Moves the cursor.
+ " Return two values:
+ " - the matching line number or "lnum".
+ " - a flag indicating whether we found the end of a tag.
+ " This method is global so that HTML-like indenters can use it.
+ " To avoid matching " > " or " < " inside a string require that the opening
+ " "<" is followed by a word character and the closing ">" comes after a
+ " non-white character.
+ let idx = match(getline(a:lnum), '\S>\s*$')
+ if idx > 0
+ call cursor(a:lnum, idx)
+ let lnum = searchpair('<\w', '' , '\S>', 'bW', '', max([a:lnum - b:html_indent_line_limit, 0]))
+ if lnum > 0
+ return [lnum, 1]
+ endif
+ endif
+ return [a:lnum, 0]
+endfunc "}}}
+
+" Find the unclosed start tag from the current cursor position.
+func HtmlIndent_FindStartTag()
+ "{{{
+ " The cursor must be on or before a closing tag.
+ " If found, positions the cursor at the match and returns the line number.
+ " Otherwise returns 0.
+ let tagname = matchstr(getline('.')[col('.') - 1:], '</\zs' . s:tagname . '\ze')
+ let start_lnum = searchpair('<' . tagname . '\>', '', '</' . tagname . '\>', 'bW')
+ if start_lnum > 0
+ return start_lnum
+ endif
+ return 0
+endfunc "}}}
+
+" Moves the cursor from a "<" to the matching ">".
+func HtmlIndent_FindTagEnd()
+ "{{{
+ " Call this with the cursor on the "<" of a start tag.
+ " This will move the cursor to the ">" of the matching end tag or, when it's
+ " a self-closing tag, to the matching ">".
+ " Limited to look up to b:html_indent_line_limit lines away.
+ let text = getline('.')
+ let tagname = matchstr(text, s:tagname . '\|!--', col('.'))
+ if tagname == '!--'
+ call search('--\zs>')
+ elseif s:get_tag('/' . tagname) != 0
+ " tag with a closing tag, find matching "</tag>"
+ call searchpair('<' . tagname, '', '</' . tagname . '\zs>', 'W', '', line('.') + b:html_indent_line_limit)
+ else
+ " self-closing tag, find the ">"
+ call search('\S\zs>')
+ endif
+endfunc "}}}
+
+" Indenting inside a start tag. Return the correct indent or -1 if unknown.
+func s:InsideTag(foundHtmlString)
+ "{{{
+ if a:foundHtmlString
+ " Inside an attribute string.
+ " Align with the opening quote or use an external function.
+ let lnum = v:lnum - 1
+ if lnum > 1
+ if exists('b:html_indent_tag_string_func')
+ return b:html_indent_tag_string_func(lnum)
+ endif
+ " If there is a double quote in the previous line, indent with the
+ " character after it.
+ if getline(lnum) =~ '"'
+ call cursor(lnum, 0)
+ normal f"
+ return virtcol('.')
+ endif
+ return indent(lnum)
+ endif
+ endif
+
+ " Should be another attribute: " attr="val". Align with the previous
+ " attribute start.
+ let lnum = v:lnum
+ while lnum > 1
+ let lnum -= 1
+ let text = getline(lnum)
+ " Find a match with one of these, align with "attr":
+ " attr=
+ " <tag attr=
+ " text<tag attr=
+ " <tag>text</tag>text<tag attr=
+ " For long lines search for the first match, finding the last match
+ " gets very slow.
+ if len(text) < 300
+ let idx = match(text, '.*\s\zs[_a-zA-Z0-9-]\+="')
+ else
+ let idx = match(text, '\s\zs[_a-zA-Z0-9-]\+="')
+ endif
+ if idx == -1
+ " try <tag attr
+ let idx = match(text, '<' . s:tagname . '\s\+\zs\w')
+ endif
+ if idx == -1
+ " after just "<tag" indent two levels more by default
+ let idx = match(text, '<' . s:tagname . '$')
+ if idx >= 0
+ call cursor(lnum, idx + 1)
+ return virtcol('.') - 1 + shiftwidth() * b:hi_attr_indent
+ endif
+ endif
+ if idx > 0
+ " Found the attribute to align with.
+ call cursor(lnum, idx)
+ return virtcol('.')
+ endif
+ endwhile
+ return -1
+endfunc "}}}
+
+" THE MAIN INDENT FUNCTION. Return the amount of indent for v:lnum.
+func HtmlIndent()
+ "{{{
+ if prevnonblank(v:lnum - 1) < 1
+ " First non-blank line has no indent.
+ return 0
+ endif
+
+ let curtext = tolower(getline(v:lnum))
+ let indentunit = shiftwidth()
+
+ let b:hi_newstate = {}
+ let b:hi_newstate.lnum = v:lnum
+
+ " When syntax HL is enabled, detect we are inside a tag. Indenting inside
+ " a tag works very differently. Do not do this when the line starts with
+ " "<", it gets the "htmlTag" ID but we are not inside a tag then.
+ if curtext !~ '^\s*<'
+ normal! ^
+ let stack = synstack(v:lnum, col('.')) " assumes there are no tabs
+ let foundHtmlString = 0
+ for synid in reverse(stack)
+ let name = synIDattr(synid, "name")
+ if index(b:hi_insideStringNames, name) >= 0
+ let foundHtmlString = 1
+ elseif index(b:hi_insideTagNames, name) >= 0
+ " Yes, we are inside a tag.
+ let indent = s:InsideTag(foundHtmlString)
+ if indent >= 0
+ " Do not keep the state. TODO: could keep the block type.
+ let b:hi_indent.lnum = 0
+ return indent
+ endif
+ endif
+ endfor
+ endif
+
+ " does the line start with a closing tag?
+ let swendtag = match(curtext, '^\s*</') >= 0
+
+ if prevnonblank(v:lnum - 1) == b:hi_indent.lnum && b:hi_lasttick == b:changedtick - 1
+ " use state (continue from previous line)
+ else
+ " start over (know nothing)
+ let b:hi_indent = s:FreshState(v:lnum)
+ endif
+
+ if b:hi_indent.block >= 2
+ " within block
+ let endtag = s:endtags[b:hi_indent.block]
+ let blockend = stridx(curtext, endtag)
+ if blockend >= 0
+ " block ends here
+ let b:hi_newstate.block = 0
+ " calc indent for REST OF LINE (may start more blocks):
+ call s:CountTagsAndState(strpart(curtext, blockend + strlen(endtag)))
+ if swendtag && b:hi_indent.block != 5
+ let indent = b:hi_indent.blocktagind + s:curind * indentunit
+ let b:hi_newstate.baseindent = indent + s:nextrel * indentunit
+ else
+ let indent = s:Alien{b:hi_indent.block}()
+ let b:hi_newstate.baseindent = b:hi_indent.blocktagind + s:nextrel * indentunit
+ endif
+ else
+ " block continues
+ " indent this line with alien method
+ let indent = s:Alien{b:hi_indent.block}()
+ endif
+ else
+ " not within a block - within usual html
+ let b:hi_newstate.block = b:hi_indent.block
+ if swendtag
+ " The current line starts with an end tag, align with its start tag.
+ call cursor(v:lnum, 1)
+ let start_lnum = HtmlIndent_FindStartTag()
+ if start_lnum > 0
+ " check for the line starting with something inside a tag:
+ " <sometag <- align here
+ " attr=val><open> not here
+ let text = getline(start_lnum)
+ let angle = matchstr(text, '[<>]')
+ if angle == '>'
+ call cursor(start_lnum, 1)
+ normal! f>%
+ let start_lnum = line('.')
+ let text = getline(start_lnum)
+ endif
+
+ let indent = indent(start_lnum)
+ if col('.') > 2
+ let swendtag = match(text, '^\s*</') >= 0
+ call s:CountITags(text[: col('.') - 2])
+ let indent += s:nextrel * shiftwidth()
+ if !swendtag
+ let indent += s:curind * shiftwidth()
+ endif
+ endif
+ else
+ " not sure what to do
+ let indent = b:hi_indent.baseindent
+ endif
+ let b:hi_newstate.baseindent = indent
+ else
+ call s:CountTagsAndState(curtext)
+ let indent = b:hi_indent.baseindent
+ let b:hi_newstate.baseindent = indent + (s:curind + s:nextrel) * indentunit
+ endif
+ endif
+
+ let b:hi_lasttick = b:changedtick
+ call extend(b:hi_indent, b:hi_newstate, "force")
+ return indent
+endfunc "}}}
+
+" Check user settings when loading this script the first time.
+call HtmlIndent_CheckUserSettings()
+
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
+" vim: fdm=marker ts=8 sw=2 tw=78