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1095 lines
33 KiB
VimL
1095 lines
33 KiB
VimL
" Vim indent script for HTML
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" Maintainer: Bram Moolenaar
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" Original Author: Andy Wokula <anwoku@yahoo.de>
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" Last Change: 2022 Jan 31
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" Version: 1.0 "{{{
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" Description: HTML indent script with cached state for faster indenting on a
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" range of lines.
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" Supports template systems through hooks.
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" Supports Closure stylesheets.
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"
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" Credits:
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" indent/html.vim (2006 Jun 05) from J. Zellner
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" indent/css.vim (2006 Dec 20) from N. Weibull
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"
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" History:
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" 2014 June (v1.0) overhaul (Bram)
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" 2012 Oct 21 (v0.9) added support for shiftwidth()
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" 2011 Sep 09 (v0.8) added HTML5 tags (thx to J. Zuckerman)
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" 2008 Apr 28 (v0.6) revised customization
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" 2008 Mar 09 (v0.5) fixed 'indk' issue (thx to C.J. Robinson)
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"}}}
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" Init Folklore, check user settings (2nd time ++)
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if exists("b:did_indent") "{{{
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finish
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endif
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" Load the Javascript indent script first, it defines GetJavascriptIndent().
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" Undo the rest.
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" Load base python indent.
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if !exists('*GetJavascriptIndent')
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runtime! indent/javascript.vim
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endif
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let b:did_indent = 1
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setlocal indentexpr=HtmlIndent()
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setlocal indentkeys=o,O,<Return>,<>>,{,},!^F
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" Needed for % to work when finding start/end of a tag.
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setlocal matchpairs+=<:>
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let b:undo_indent = "setlocal inde< indk<"
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" b:hi_indent keeps state to speed up indenting consecutive lines.
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let b:hi_indent = {"lnum": -1}
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"""""" Code below this is loaded only once. """""
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if exists("*HtmlIndent") && !exists('g:force_reload_html')
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call HtmlIndent_CheckUserSettings()
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finish
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endif
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" Allow for line continuation below.
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let s:cpo_save = &cpo
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set cpo-=C
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"}}}
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" Pattern to match the name of a tag, including custom elements.
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let s:tagname = '\w\+\(-\w\+\)*'
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" Check and process settings from b:html_indent and g:html_indent... variables.
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" Prefer using buffer-local settings over global settings, so that there can
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" be defaults for all HTML files and exceptions for specific types of HTML
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" files.
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func HtmlIndent_CheckUserSettings()
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"{{{
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let inctags = ''
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if exists("b:html_indent_inctags")
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let inctags = b:html_indent_inctags
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elseif exists("g:html_indent_inctags")
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let inctags = g:html_indent_inctags
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endif
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let b:hi_tags = {}
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if len(inctags) > 0
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call s:AddITags(b:hi_tags, split(inctags, ","))
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endif
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let autotags = ''
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if exists("b:html_indent_autotags")
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let autotags = b:html_indent_autotags
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elseif exists("g:html_indent_autotags")
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let autotags = g:html_indent_autotags
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endif
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let b:hi_removed_tags = {}
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if len(autotags) > 0
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call s:RemoveITags(b:hi_removed_tags, split(autotags, ","))
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endif
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" Syntax names indicating being inside a string of an attribute value.
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let string_names = []
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if exists("b:html_indent_string_names")
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let string_names = b:html_indent_string_names
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elseif exists("g:html_indent_string_names")
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let string_names = g:html_indent_string_names
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endif
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let b:hi_insideStringNames = ['htmlString']
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if len(string_names) > 0
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for s in string_names
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call add(b:hi_insideStringNames, s)
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endfor
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endif
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" Syntax names indicating being inside a tag.
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let tag_names = []
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if exists("b:html_indent_tag_names")
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let tag_names = b:html_indent_tag_names
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elseif exists("g:html_indent_tag_names")
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let tag_names = g:html_indent_tag_names
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endif
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let b:hi_insideTagNames = ['htmlTag', 'htmlScriptTag']
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if len(tag_names) > 0
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for s in tag_names
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call add(b:hi_insideTagNames, s)
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endfor
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endif
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let indone = {"zero": 0
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\,"auto": "indent(prevnonblank(v:lnum-1))"
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\,"inc": "b:hi_indent.blocktagind + shiftwidth()"}
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let script1 = ''
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if exists("b:html_indent_script1")
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let script1 = b:html_indent_script1
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elseif exists("g:html_indent_script1")
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let script1 = g:html_indent_script1
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endif
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if len(script1) > 0
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let b:hi_js1indent = get(indone, script1, indone.zero)
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else
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let b:hi_js1indent = 0
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endif
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let style1 = ''
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if exists("b:html_indent_style1")
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let style1 = b:html_indent_style1
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elseif exists("g:html_indent_style1")
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let style1 = g:html_indent_style1
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endif
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if len(style1) > 0
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let b:hi_css1indent = get(indone, style1, indone.zero)
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else
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let b:hi_css1indent = 0
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endif
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if !exists('b:html_indent_line_limit')
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if exists('g:html_indent_line_limit')
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let b:html_indent_line_limit = g:html_indent_line_limit
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else
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let b:html_indent_line_limit = 200
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endif
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endif
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if exists('b:html_indent_attribute')
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let b:hi_attr_indent = b:html_indent_attribute
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elseif exists('g:html_indent_attribute')
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let b:hi_attr_indent = g:html_indent_attribute
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else
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let b:hi_attr_indent = 2
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endif
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endfunc "}}}
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" Init Script Vars
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"{{{
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let b:hi_lasttick = 0
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let b:hi_newstate = {}
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let s:countonly = 0
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"}}}
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" Fill the s:indent_tags dict with known tags.
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" The key is "tagname" or "/tagname". {{{
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" The value is:
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" 1 opening tag
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" 2 "pre"
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" 3 "script"
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" 4 "style"
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" 5 comment start
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" 6 conditional comment start
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" -1 closing tag
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" -2 "/pre"
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" -3 "/script"
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" -4 "/style"
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" -5 comment end
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" -6 conditional comment end
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let s:indent_tags = {}
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let s:endtags = [0,0,0,0,0,0,0] " long enough for the highest index
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"}}}
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" Add a list of tag names for a pair of <tag> </tag> to "tags".
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func s:AddITags(tags, taglist)
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"{{{
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for itag in a:taglist
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let a:tags[itag] = 1
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let a:tags['/' . itag] = -1
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endfor
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endfunc "}}}
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" Take a list of tag name pairs that are not to be used as tag pairs.
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func s:RemoveITags(tags, taglist)
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"{{{
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for itag in a:taglist
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let a:tags[itag] = 1
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let a:tags['/' . itag] = 1
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endfor
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endfunc "}}}
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" Add a block tag, that is a tag with a different kind of indenting.
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func s:AddBlockTag(tag, id, ...)
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"{{{
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if !(a:id >= 2 && a:id < len(s:endtags))
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echoerr 'AddBlockTag ' . a:id
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return
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endif
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let s:indent_tags[a:tag] = a:id
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if a:0 == 0
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let s:indent_tags['/' . a:tag] = -a:id
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let s:endtags[a:id] = "</" . a:tag . ">"
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else
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let s:indent_tags[a:1] = -a:id
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let s:endtags[a:id] = a:1
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endif
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endfunc "}}}
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" Add known tag pairs.
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" Self-closing tags and tags that are sometimes {{{
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" self-closing (e.g., <p>) are not here (when encountering </p> we can find
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" the matching <p>, but not the other way around).
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" Known self-closing tags: " 'p', 'img', 'source', 'area', 'keygen', 'track',
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" 'wbr'.
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" Old HTML tags:
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call s:AddITags(s:indent_tags, [
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\ 'a', 'abbr', 'acronym', 'address', 'b', 'bdo', 'big',
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\ 'blockquote', 'body', 'button', 'caption', 'center', 'cite', 'code',
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\ 'colgroup', 'dd', 'del', 'dfn', 'dir', 'div', 'dl', 'dt', 'em', 'fieldset', 'font',
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\ 'form', 'frameset', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'head', 'html',
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\ 'i', 'iframe', 'ins', 'kbd', 'label', 'legend', 'li',
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\ 'map', 'menu', 'noframes', 'noscript', 'object', 'ol',
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\ 'optgroup', 'q', 's', 'samp', 'select', 'small', 'span', 'strong', 'sub',
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\ 'sup', 'table', 'textarea', 'title', 'tt', 'u', 'ul', 'var', 'th', 'td',
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\ 'tr', 'tbody', 'tfoot', 'thead'])
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" New HTML5 elements:
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call s:AddITags(s:indent_tags, [
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\ 'article', 'aside', 'audio', 'bdi', 'canvas', 'command', 'data',
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\ 'datalist', 'details', 'dialog', 'embed', 'figcaption', 'figure',
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\ 'footer', 'header', 'hgroup', 'main', 'mark', 'meter', 'nav', 'output',
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\ 'picture', 'progress', 'rp', 'rt', 'ruby', 'section', 'summary',
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\ 'svg', 'time', 'video'])
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" Tags added for web components:
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call s:AddITags(s:indent_tags, [
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\ 'content', 'shadow', 'template'])
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"}}}
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" Add Block Tags: these contain alien content
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"{{{
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call s:AddBlockTag('pre', 2)
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call s:AddBlockTag('script', 3)
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call s:AddBlockTag('style', 4)
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call s:AddBlockTag('<!--', 5, '-->')
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call s:AddBlockTag('<!--[', 6, '![endif]-->')
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"}}}
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" Return non-zero when "tagname" is an opening tag, not being a block tag, for
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" which there should be a closing tag. Can be used by scripts that include
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" HTML indenting.
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func HtmlIndent_IsOpenTag(tagname)
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"{{{
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if get(s:indent_tags, a:tagname) == 1
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return 1
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endif
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return get(b:hi_tags, a:tagname) == 1
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endfunc "}}}
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" Get the value for "tagname", taking care of buffer-local tags.
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func s:get_tag(tagname)
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"{{{
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let i = get(s:indent_tags, a:tagname)
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if (i == 1 || i == -1) && get(b:hi_removed_tags, a:tagname) != 0
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return 0
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endif
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if i == 0
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let i = get(b:hi_tags, a:tagname)
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endif
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return i
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endfunc "}}}
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" Count the number of start and end tags in "text".
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func s:CountITags(text)
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"{{{
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" Store the result in s:curind and s:nextrel.
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let s:curind = 0 " relative indent steps for current line [unit &sw]:
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let s:nextrel = 0 " relative indent steps for next line [unit &sw]:
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let s:block = 0 " assume starting outside of a block
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let s:countonly = 1 " don't change state
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call substitute(a:text, '<\zs/\=' . s:tagname . '\>\|<!--\[\|\[endif\]-->\|<!--\|-->', '\=s:CheckTag(submatch(0))', 'g')
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let s:countonly = 0
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endfunc "}}}
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" Count the number of start and end tags in text.
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func s:CountTagsAndState(text)
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"{{{
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" Store the result in s:curind and s:nextrel. Update b:hi_newstate.block.
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let s:curind = 0 " relative indent steps for current line [unit &sw]:
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let s:nextrel = 0 " relative indent steps for next line [unit &sw]:
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let s:block = b:hi_newstate.block
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let tmp = substitute(a:text, '<\zs/\=' . s:tagname . '\>\|<!--\[\|\[endif\]-->\|<!--\|-->', '\=s:CheckTag(submatch(0))', 'g')
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if s:block == 3
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let b:hi_newstate.scripttype = s:GetScriptType(matchstr(tmp, '\C.*<SCRIPT\>\zs[^>]*'))
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endif
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let b:hi_newstate.block = s:block
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endfunc "}}}
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" Used by s:CountITags() and s:CountTagsAndState().
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func s:CheckTag(itag)
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"{{{
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" Returns an empty string or "SCRIPT".
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" a:itag can be "tag" or "/tag" or "<!--" or "-->"
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if (s:CheckCustomTag(a:itag))
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return ""
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endif
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let ind = s:get_tag(a:itag)
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if ind == -1
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" closing tag
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if s:block != 0
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" ignore itag within a block
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return ""
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endif
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if s:nextrel == 0
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let s:curind -= 1
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else
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let s:nextrel -= 1
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endif
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elseif ind == 1
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" opening tag
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if s:block != 0
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return ""
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endif
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let s:nextrel += 1
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elseif ind != 0
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" block-tag (opening or closing)
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return s:CheckBlockTag(a:itag, ind)
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" else ind==0 (other tag found): keep indent
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endif
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return ""
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endfunc "}}}
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" Used by s:CheckTag(). Returns an empty string or "SCRIPT".
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func s:CheckBlockTag(blocktag, ind)
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"{{{
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if a:ind > 0
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" a block starts here
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if s:block != 0
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" already in a block (nesting) - ignore
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" especially ignore comments after other blocktags
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return ""
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endif
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let s:block = a:ind " block type
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if s:countonly
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return ""
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endif
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let b:hi_newstate.blocklnr = v:lnum
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" save allover indent for the endtag
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let b:hi_newstate.blocktagind = b:hi_indent.baseindent + (s:nextrel + s:curind) * shiftwidth()
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if a:ind == 3
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return "SCRIPT" " all except this must be lowercase
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" line is to be checked again for the type attribute
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endif
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else
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let s:block = 0
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" we get here if starting and closing a block-tag on the same line
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endif
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return ""
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endfunc "}}}
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" Used by s:CheckTag().
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func s:CheckCustomTag(ctag)
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"{{{
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" Returns 1 if ctag is the tag for a custom element, 0 otherwise.
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" a:ctag can be "tag" or "/tag" or "<!--" or "-->"
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let pattern = '\%\(\w\+-\)\+\w\+'
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if match(a:ctag, pattern) == -1
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return 0
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endif
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if matchstr(a:ctag, '\/\ze.\+') == "/"
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" closing tag
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if s:block != 0
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" ignore ctag within a block
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return 1
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endif
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if s:nextrel == 0
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let s:curind -= 1
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else
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let s:nextrel -= 1
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endif
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else
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" opening tag
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if s:block != 0
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return 1
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endif
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let s:nextrel += 1
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endif
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return 1
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endfunc "}}}
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" Return the <script> type: either "javascript" or ""
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func s:GetScriptType(str)
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"{{{
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if a:str == "" || a:str =~ "java"
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return "javascript"
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else
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return ""
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endif
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endfunc "}}}
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" Look back in the file, starting at a:lnum - 1, to compute a state for the
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" start of line a:lnum. Return the new state.
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func s:FreshState(lnum)
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"{{{
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" A state is to know ALL relevant details about the
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" lines 1..a:lnum-1, initial calculating (here!) can be slow, but updating is
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" fast (incremental).
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" TODO: this should be split up in detecting the block type and computing the
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" indent for the block type, so that when we do not know the indent we do
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" not need to clear the whole state and re-detect the block type again.
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" State:
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" lnum last indented line == prevnonblank(a:lnum - 1)
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" block = 0 a:lnum located within special tag: 0:none, 2:<pre>,
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" 3:<script>, 4:<style>, 5:<!--, 6:<!--[
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" baseindent use this indent for line a:lnum as a start - kind of
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" autoindent (if block==0)
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" scripttype = '' type attribute of a script tag (if block==3)
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" blocktagind indent for current opening (get) and closing (set)
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" blocktag (if block!=0)
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" blocklnr lnum of starting blocktag (if block!=0)
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" inattr line {lnum} starts with attributes of a tag
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let state = {}
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let state.lnum = prevnonblank(a:lnum - 1)
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let state.scripttype = ""
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let state.blocktagind = -1
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let state.block = 0
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let state.baseindent = 0
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let state.blocklnr = 0
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let state.inattr = 0
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if state.lnum == 0
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return state
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endif
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" Heuristic:
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" remember startline state.lnum
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" look back for <pre, </pre, <script, </script, <style, </style tags
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" remember stopline
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" if opening tag found,
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" assume a:lnum within block
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" else
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" look back in result range (stopline, startline) for comment
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" \ delimiters (<!--, -->)
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" if comment opener found,
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" assume a:lnum within comment
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" else
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" assume usual html for a:lnum
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" if a:lnum-1 has a closing comment
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" look back to get indent of comment opener
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" FI
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" look back for a blocktag
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let stopline2 = v:lnum + 1
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if has_key(b:hi_indent, 'block') && b:hi_indent.block > 5
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let [stopline2, stopcol2] = searchpos('<!--', 'bnW')
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endif
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let [stopline, stopcol] = searchpos('\c<\zs\/\=\%(pre\>\|script\>\|style\>\)', "bnW")
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if stopline > 0 && stopline < stopline2
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" ugly ... why isn't there searchstr()
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let tagline = tolower(getline(stopline))
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let blocktag = matchstr(tagline, '\/\=\%(pre\>\|script\>\|style\>\)', stopcol - 1)
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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
|