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" Vim indent file
"
" Language: svg
" Maintainer: Jason Shell <jason.shell.mail@gmail.com>
" Last Change: 2015 Sep 23
" Notes: 1) will be confused by unbalanced tags in comments
" 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=SvgIndentGet(v:lnum,1)
setlocal indentkeys=o,O,*<Return>,<>>,<<>,/,{,}
if !exists('b:svg_indent_open')
let b:svg_indent_open = '.\{-}<\a'
" pre tag, e.g. <address>
" let b:svg_indent_open = '.\{-}<[/]\@!\(address\)\@!'
endif
if !exists('b:svg_indent_close')
let b:svg_indent_close = '.\{-}</'
" end pre tag, e.g. </address>
" let b:svg_indent_close = '.\{-}</\(address\)\@!'
endif
let &cpo = s:keepcpo
unlet s:keepcpo
" [-- finish, if the function already exists --]
if exists('*SvgIndentGet')
finish
endif
let s:keepcpo= &cpo
set cpo&vim
fun! <SID>SvgIndentWithPattern(line, pat)
let s = substitute('x'.a:line, a:pat, "\1", 'g')
return strlen(substitute(s, "[^\1].*$", '', ''))
endfun
" [-- check if it's svg --]
fun! <SID>SvgIndentSynCheck(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 !~ 'svg' && '' != syn2 && syn2 !~ 'svg'
" don't indent pure non-xml code
return 0
" elseif syn1 =~ '^xmlComment' && syn2 =~ '^xmlComment'
elseif syn1 =~ '^svgComment' && syn2 =~ '^svgComment'
" indent comments specially
return -1
endif
endif
return 1
endfun
" [-- return the sum of indents of a:lnum --]
fun! <SID>SvgIndentSum(lnum, style, add)
let line = getline(a:lnum)
if a:style == match(line, '^\s*</')
return (&sw *
\ (<SID>SvgIndentWithPattern(line, b:svg_indent_open)
\ - <SID>SvgIndentWithPattern(line, b:svg_indent_close)
\ - <SID>SvgIndentWithPattern(line, '.\{-}/>'))) + a:add
else
return a:add
endif
endfun
fun! SvgIndentGet(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>SvgIndentSynCheck(lnum)
let check_alnum = <SID>SvgIndentSynCheck(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>SvgIndentSum(lnum, -1, indent(lnum))
let ind = <SID>SvgIndentSum(a:lnum, 0, ind)
return ind
endfun
let &cpo = s:keepcpo
unlet s:keepcpo
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