Extract vim builtin css/xml indent files

indent/vue.vim

@@ -57,16 +57,18 @@ endif
 " Load indent method {{{
 "
 """""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
+" Use lib/indent/ files for compatibility
+unlet! b:did_indent
+runtime lib/indent/xml.vim
+
+unlet! b:did_indent
+runtime lib/indent/css.vim
+
+" Use normal indent files
 unlet! b:did_indent
 runtime! indent/javascript.vim
 let b:javascript_indentexpr = &indentexpr
 
-unlet! b:did_indent
-runtime! indent/xml.vim
-
-unlet! b:did_indent
-runtime! indent/css.vim
-
 if s:use_pug
   unlet! b:did_indent
   runtime! indent/pug.vim

lib/indent/css.vim

@@ -0,0 +1,87 @@
+" Vim indent file
+" Language:	    CSS
+" Maintainer:	    Nikolai Weibull <now@bitwi.se>
+" Latest Revision:  2012-05-30
+"		    Use of shiftwidth() added by Oleg Zubchenko.	
+
+" Changes: 1) Reacquire the line while checking comment lines.
+
+if exists("b:did_indent")
+  finish
+endif
+let b:did_indent = 1
+
+setlocal indentexpr=GetCSSIndent()
+setlocal indentkeys=0{,0},!^F,o,O
+setlocal nosmartindent
+
+let b:undo_indent = "setl smartindent< indentkeys< indentexpr<"
+
+if exists("*GetCSSIndent")
+  finish
+endif
+let s:keepcpo= &cpo
+set cpo&vim
+
+function s:prevnonblanknoncomment(lnum)
+  let lnum = a:lnum
+  while lnum > 1
+    let lnum = prevnonblank(lnum)
+    let line = getline(lnum)
+    if line =~ '\*/'
+      while lnum > 1 && line !~ '/\*'
+        let lnum -= 1
+        let line = getline(lnum)
+      endwhile
+      if line =~ '^\s*/\*'
+        let lnum -= 1
+      else
+        break
+      endif
+    else
+      break
+    endif
+  endwhile
+  return lnum
+endfunction
+
+function s:count_braces(lnum, count_open)
+  let n_open = 0
+  let n_close = 0
+  let line = getline(a:lnum)
+  let pattern = '[{}]'
+  let i = match(line, pattern)
+  while i != -1
+    if synIDattr(synID(a:lnum, i + 1, 0), 'name') !~ 'css\%(Comment\|StringQ\{1,2}\)'
+      if line[i] == '{'
+        let n_open += 1
+      elseif line[i] == '}'
+        if n_open > 0
+          let n_open -= 1
+        else
+          let n_close += 1
+        endif
+      endif
+    endif
+    let i = match(line, pattern, i + 1)
+  endwhile
+  return a:count_open ? n_open : n_close
+endfunction
+
+function GetCSSIndent()
+  let line = getline(v:lnum)
+  if line =~ '^\s*\*'
+    return cindent(v:lnum)
+  endif
+
+  let pnum = s:prevnonblanknoncomment(v:lnum - 1)
+  if pnum == 0
+    return 0
+  endif
+
+  return indent(pnum) + s:count_braces(pnum, 1) * shiftwidth()
+        \ - s:count_braces(v:lnum, 0) * shiftwidth()
+endfunction
+
+let &cpo = s:keepcpo
+unlet s:keepcpo

lib/indent/xml.vim

@@ -0,0 +1,107 @@
+" Language:	xml
+" Maintainer:	Johannes Zellner <johannes@zellner.org>
+" Last Change:	2017 Jun 13
+" Notes:	1) does not indent pure non-xml code (e.g. embedded scripts)
+"		2) will be confused by unbalanced tags in comments
+"		or CDATA sections.
+"		2009-05-26 patch by Nikolai Weibull
+" TODO: 	implement pre-like tags, see xml_indent_open / xml_indent_close
+
+" Only load this indent file when no other was loaded.
+if exists("b:did_indent")
+    finish
+endif
+let b:did_indent = 1
+let s:keepcpo= &cpo
+set cpo&vim
+
+" [-- local settings (must come before aborting the script) --]
+setlocal indentexpr=XmlIndentGet(v:lnum,1)
+setlocal indentkeys=o,O,*<Return>,<>>,<<>,/,{,}
+
+if !exists('b:xml_indent_open')
+    let b:xml_indent_open = '.\{-}<\a'
+    " pre tag, e.g. <address>
+    " let b:xml_indent_open = '.\{-}<[/]\@!\(address\)\@!'
+endif
+
+if !exists('b:xml_indent_close')
+    let b:xml_indent_close = '.\{-}</'
+    " end pre tag, e.g. </address>
+    " let b:xml_indent_close = '.\{-}</\(address\)\@!'
+endif
+
+let &cpo = s:keepcpo
+unlet s:keepcpo
+
+" [-- finish, if the function already exists --]
+if exists('*XmlIndentGet')
+  finish
+endif
+
+let s:keepcpo= &cpo
+set cpo&vim
+
+fun! <SID>XmlIndentWithPattern(line, pat)
+    let s = substitute('x'.a:line, a:pat, "\1", 'g')
+    return strlen(substitute(s, "[^\1].*$", '', ''))
+endfun
+
+" [-- check if it's xml --]
+fun! <SID>XmlIndentSynCheck(lnum)
+    if '' != &syntax
+	let syn1 = synIDattr(synID(a:lnum, 1, 1), 'name')
+	let syn2 = synIDattr(synID(a:lnum, strlen(getline(a:lnum)) - 1, 1), 'name')
+	if '' != syn1 && syn1 !~ 'xml' && '' != syn2 && syn2 !~ 'xml'
+	    " don't indent pure non-xml code
+	    return 0
+	elseif syn1 =~ '^xmlComment' && syn2 =~ '^xmlComment'
+	    " indent comments specially
+	    return -1
+	endif
+    endif
+    return 1
+endfun
+
+" [-- return the sum of indents of a:lnum --]
+fun! <SID>XmlIndentSum(lnum, style, add)
+    let line = getline(a:lnum)
+    if a:style == match(line, '^\s*</')
+	return (shiftwidth() *
+	\  (<SID>XmlIndentWithPattern(line, b:xml_indent_open)
+	\ - <SID>XmlIndentWithPattern(line, b:xml_indent_close)
+	\ - <SID>XmlIndentWithPattern(line, '.\{-}/>'))) + a:add
+    else
+	return a:add
+    endif
+endfun
+
+fun! XmlIndentGet(lnum, use_syntax_check)
+    " Find a non-empty line above the current line.
+    let lnum = prevnonblank(a:lnum - 1)
+
+    " Hit the start of the file, use zero indent.
+    if lnum == 0
+	return 0
+    endif
+
+    if a:use_syntax_check
+	let check_lnum = <SID>XmlIndentSynCheck(lnum)
+	let check_alnum = <SID>XmlIndentSynCheck(a:lnum)
+	if 0 == check_lnum || 0 == check_alnum
+	    return indent(a:lnum)
+	elseif -1 == check_lnum || -1 == check_alnum
+	    return -1
+	endif
+    endif
+
+    let ind = <SID>XmlIndentSum(lnum, -1, indent(lnum))
+    let ind = <SID>XmlIndentSum(a:lnum, 0, ind)
+
+    return ind
+endfun
+
+let &cpo = s:keepcpo
+unlet s:keepcpo
+
+" vim:ts=8