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7
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1 " Language: xml
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2 " Maintainer: Johannes Zellner <johannes@zellner.org>
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3 " Last Change: Tue, 27 Apr 2004 14:54:59 CEST
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4 " Notes: 1) does not indent pure non-xml code (e.g. embedded scripts)
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5 " 2) will be confused by unbalanced tags in comments
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6 " or CDATA sections.
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7 " TODO: implement pre-like tags, see xml_indent_open / xml_indent_close
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8
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9 " Only load this indent file when no other was loaded.
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10 if exists("b:did_indent")
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11 finish
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12 endif
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13 let b:did_indent = 1
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14
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15 " [-- local settings (must come before aborting the script) --]
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16 setlocal indentexpr=XmlIndentGet(v:lnum,1)
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17 setlocal indentkeys=o,O,*<Return>,<>>,<<>,/,{,}
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18
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19 set cpo-=C
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20
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21 if !exists('b:xml_indent_open')
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22 let b:xml_indent_open = '.\{-}<\a'
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23 " pre tag, e.g. <address>
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24 " let b:xml_indent_open = '.\{-}<[/]\@!\(address\)\@!'
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25 endif
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26
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27 if !exists('b:xml_indent_close')
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28 let b:xml_indent_close = '.\{-}</'
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29 " end pre tag, e.g. </address>
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30 " let b:xml_indent_close = '.\{-}</\(address\)\@!'
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31 endif
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32
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33 " [-- finish, if the function already exists --]
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34 if exists('*XmlIndentGet') | finish | endif
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35
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36 fun! <SID>XmlIndentWithPattern(line, pat)
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37 let s = substitute('x'.a:line, a:pat, "\1", 'g')
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38 return strlen(substitute(s, "[^\1].*$", '', ''))
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39 endfun
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40
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41 " [-- check if it's xml --]
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42 fun! <SID>XmlIndentSynCheck(lnum)
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43 if '' != &syntax
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44 let syn1 = synIDattr(synID(a:lnum, 1, 1), 'name')
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45 let syn2 = synIDattr(synID(a:lnum, strlen(getline(a:lnum)) - 1, 1), 'name')
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46 if '' != syn1 && syn1 !~ 'xml' && '' != syn2 && syn2 !~ 'xml'
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47 " don't indent pure non-xml code
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48 return 0
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49 endif
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50 endif
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51 return 1
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52 endfun
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53
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54 " [-- return the sum of indents of a:lnum --]
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55 fun! <SID>XmlIndentSum(lnum, style, add)
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56 let line = getline(a:lnum)
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57 if a:style == match(line, '^\s*</')
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58 return (&sw *
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59 \ (<SID>XmlIndentWithPattern(line, b:xml_indent_open)
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60 \ - <SID>XmlIndentWithPattern(line, b:xml_indent_close)
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61 \ - <SID>XmlIndentWithPattern(line, '.\{-}/>'))) + a:add
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62 else
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63 return a:add
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64 endif
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65 endfun
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66
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67 fun! XmlIndentGet(lnum, use_syntax_check)
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68 " Find a non-empty line above the current line.
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69 let lnum = prevnonblank(a:lnum - 1)
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70
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71 " Hit the start of the file, use zero indent.
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72 if lnum == 0
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73 return 0
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74 endif
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75
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76 if a:use_syntax_check
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77 if 0 == <SID>XmlIndentSynCheck(lnum) || 0 == <SID>XmlIndentSynCheck(a:lnum)
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78 return indent(a:lnum)
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79 endif
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80 endif
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81
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82 let ind = <SID>XmlIndentSum(lnum, -1, indent(lnum))
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83 let ind = <SID>XmlIndentSum(a:lnum, 0, ind)
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84
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85 return ind
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86 endfun
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87
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88 " vim:ts=8
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