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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/xml.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/xml.vim')
-rw-r--r--runtime/indent/xml.vim218
1 files changed, 218 insertions, 0 deletions
diff --git a/runtime/indent/xml.vim b/runtime/indent/xml.vim
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+" Language: XML
+" Maintainer: Christian Brabandt <cb@256bit.org>
+" Repository: https://github.com/chrisbra/vim-xml-ftplugin
+" Previous Maintainer: Johannes Zellner <johannes@zellner.org>
+" Last Changed: 2020 Nov 4th
+" Last Change:
+" 20200529 - Handle empty closing tags correctly
+" 20191202 - Handle docbk filetype
+" 20190726 - Correctly handle non-tagged data
+" 20190204 - correctly handle wrap tags
+" https://github.com/chrisbra/vim-xml-ftplugin/issues/5
+" 20190128 - Make sure to find previous tag
+" https://github.com/chrisbra/vim-xml-ftplugin/issues/4
+" 20181116 - Fix indentation when tags start with a colon or an underscore
+" https://github.com/vim/vim/pull/926
+" 20181022 - Do not overwrite indentkeys setting
+" https://github.com/chrisbra/vim-xml-ftplugin/issues/1
+" 20180724 - Correctly indent xml comments https://github.com/vim/vim/issues/3200
+"
+" 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) --]
+" Attention: Parameter use_syntax_check is used by the docbk.vim indent script
+setlocal indentexpr=XmlIndentGet(v:lnum,1)
+setlocal indentkeys=o,O,*<Return>,<>>,<<>,/,{,},!^F
+" autoindent: used when the indentexpr returns -1
+setlocal autoindent
+
+let b:undo_indent = "setl ai< inde< indk<"
+
+if !exists('b:xml_indent_open')
+ let b:xml_indent_open = '.\{-}<[:A-Z_a-z]'
+ " 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
+
+if !exists('b:xml_indent_continuation_filetype')
+ let b:xml_indent_continuation_filetype = 'xml'
+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
+ endif
+ endif
+ return 1
+endfun
+
+" [-- return the sum of indents of a:lnum --]
+fun! <SID>XmlIndentSum(line, style, add)
+ if <SID>IsXMLContinuation(a:line) && a:style == 0 && !<SID>IsXMLEmptyClosingTag(a:line)
+ " no complete tag, add one additional indent level
+ " but only for the current line
+ return a:add + shiftwidth()
+ elseif <SID>HasNoTagEnd(a:line)
+ " no complete tag, return initial indent
+ return a:add
+ endif
+ if a:style == match(a:line, '^\s*</')
+ return (shiftwidth() *
+ \ (<SID>XmlIndentWithPattern(a:line, b:xml_indent_open)
+ \ - <SID>XmlIndentWithPattern(a:line, b:xml_indent_close)
+ \ - <SID>XmlIndentWithPattern(a:line, '.\{-}/>'))) + a:add
+ else
+ return a:add
+ endif
+endfun
+
+" Main indent function
+fun! XmlIndentGet(lnum, use_syntax_check)
+ " Find a non-empty line above the current line.
+ if prevnonblank(a:lnum - 1) == 0
+ " Hit the start of the file, use zero indent.
+ return 0
+ endif
+ " Find previous line with a tag (regardless whether open or closed,
+ " but always restrict the match to a line before the current one
+ " Note: xml declaration: <?xml version="1.0"?>
+ " won't be found, as it is not a legal tag name
+ let ptag_pattern = '\%(.\{-}<[/:A-Z_a-z]\)'. '\%(\&\%<'. a:lnum .'l\)'
+ let ptag = search(ptag_pattern, 'bnW')
+ " no previous tag
+ if ptag == 0
+ return 0
+ endif
+
+ let pline = getline(ptag)
+ let pind = indent(ptag)
+
+ let syn_name_start = '' " Syntax element at start of line (excluding whitespace)
+ let syn_name_end = '' " Syntax element at end of line
+ let curline = getline(a:lnum)
+ if a:use_syntax_check
+ let check_lnum = <SID>XmlIndentSynCheck(ptag)
+ let check_alnum = <SID>XmlIndentSynCheck(a:lnum)
+ if check_lnum == 0 || check_alnum == 0
+ return indent(a:lnum)
+ endif
+ let syn_name_end = synIDattr(synID(a:lnum, strlen(curline) - 1, 1), 'name')
+ let syn_name_start = synIDattr(synID(a:lnum, match(curline, '\S') + 1, 1), 'name')
+ let prev_syn_name_end = synIDattr(synID(ptag, strlen(pline) - 1, 1), 'name')
+ " not needed (yet?)
+ " let prev_syn_name_start = synIDattr(synID(ptag, match(pline, '\S') + 1, 1), 'name')
+ endif
+
+ if syn_name_end =~ 'Comment' && syn_name_start =~ 'Comment'
+ return <SID>XmlIndentComment(a:lnum)
+ elseif empty(syn_name_start) && empty(syn_name_end) && a:use_syntax_check
+ " non-xml tag content: use indent from 'autoindent'
+ if pline =~ b:xml_indent_close
+ return pind
+ elseif !empty(prev_syn_name_end)
+ " only indent by an extra shiftwidth, if the previous line ends
+ " with an XML like tag
+ return pind + shiftwidth()
+ else
+ " no extra indent, looks like a text continuation line
+ return pind
+ endif
+ endif
+
+ " Get indent from previous tag line
+ let ind = <SID>XmlIndentSum(pline, -1, pind)
+ " Determine indent from current line
+ let ind = <SID>XmlIndentSum(curline, 0, ind)
+ return ind
+endfun
+
+func! <SID>IsXMLContinuation(line)
+ " Checks, whether or not the line matches a start-of-tag
+ return a:line !~ '^\s*<' && &ft =~# b:xml_indent_continuation_filetype
+endfunc
+
+func! <SID>HasNoTagEnd(line)
+ " Checks whether or not the line matches '>' (so finishes a tag)
+ return a:line !~ '>\s*$'
+endfunc
+
+func! <SID>IsXMLEmptyClosingTag(line)
+ " Checks whether the line ends with an empty closing tag such as <lb/>
+ return a:line =~? '<[^>]*/>\s*$'
+endfunc
+
+" return indent for a commented line,
+" the middle part might be indented one additional level
+func! <SID>XmlIndentComment(lnum)
+ let ptagopen = search('.\{-}<[:A-Z_a-z]\_[^/]\{-}>.\{-}', 'bnW')
+ let ptagclose = search(b:xml_indent_close, 'bnW')
+ if getline(a:lnum) =~ '<!--'
+ " if previous tag was a closing tag, do not add
+ " one additional level of indent
+ if ptagclose > ptagopen && a:lnum > ptagclose
+ " If the previous tag was closed on the same line as it was
+ " declared, we should indent with its indent level.
+ if !<SID>IsXMLContinuation(getline(ptagclose))
+ return indent(ptagclose)
+ else
+ return indent(ptagclose) - shiftwidth()
+ endif
+ elseif ptagclose == ptagopen
+ return indent(ptagclose)
+ else
+ " start of comment, add one indentation level
+ return indent(ptagopen) + shiftwidth()
+ endif
+ elseif getline(a:lnum) =~ '-->'
+ " end of comment, same as start of comment
+ return indent(search('<!--', 'bnW'))
+ else
+ " middle part of comment, add one additional level
+ return indent(search('<!--', 'bnW')) + shiftwidth()
+ endif
+endfunc
+
+let &cpo = s:keepcpo
+unlet s:keepcpo
+
+" vim:ts=4 et sts=-1 sw=0