1 files changed, 88 insertions, 0 deletions
diff --git a/runtime/indent/xml.vim b/runtime/indent/xml.vim
new file mode 100644
index 000000000..340981b3d
--- /dev/null
+++ b/runtime/indent/xml.vim
@@ -0,0 +1,88 @@
+" Language:	xml
+" Maintainer:	Johannes Zellner <johannes@zellner.org>
+" Last Change:	Tue, 27 Apr 2004 14:54:59 CEST
+" 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.
+" 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
+
+" [-- local settings (must come before aborting the script) --]
+setlocal indentexpr=XmlIndentGet(v:lnum,1)
+setlocal indentkeys=o,O,*<Return>,<>>,<<>,/,{,}
+
+set cpo-=C
+
+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
+
+" [-- finish, if the function already exists --]
+if exists('*XmlIndentGet') | finish | endif
+
+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
+	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 (&sw *
+	\  (<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
+	if 0 == <SID>XmlIndentSynCheck(lnum) || 0 == <SID>XmlIndentSynCheck(a:lnum)
+	    return indent(a:lnum)
+	endif
+    endif
+
+    let ind = <SID>XmlIndentSum(lnum, -1, indent(lnum))
+    let ind = <SID>XmlIndentSum(a:lnum, 0, ind)
+
+    return ind
+endfun
+
+" vim:ts=8