7
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1 " Language: xml
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2 " Maintainer: Johannes Zellner <johannes@zellner.org>
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2034
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3 " Last Change: 2009-05-26 00:17:25
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7
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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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2034
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7 " 2009-05-26 patch by Nikolai Weibull
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8 " TODO: implement pre-like tags, see xml_indent_open / xml_indent_close
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7
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9
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10 " Only load this indent file when no other was loaded.
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11 if exists("b:did_indent")
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12 finish
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13 endif
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14 let b:did_indent = 1
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15
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16 " [-- local settings (must come before aborting the script) --]
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17 setlocal indentexpr=XmlIndentGet(v:lnum,1)
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18 setlocal indentkeys=o,O,*<Return>,<>>,<<>,/,{,}
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19
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20 set cpo-=C
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21
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22 if !exists('b:xml_indent_open')
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23 let b:xml_indent_open = '.\{-}<\a'
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24 " pre tag, e.g. <address>
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25 " let b:xml_indent_open = '.\{-}<[/]\@!\(address\)\@!'
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26 endif
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27
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28 if !exists('b:xml_indent_close')
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29 let b:xml_indent_close = '.\{-}</'
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30 " end pre tag, e.g. </address>
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31 " let b:xml_indent_close = '.\{-}</\(address\)\@!'
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32 endif
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33
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34 " [-- finish, if the function already exists --]
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35 if exists('*XmlIndentGet') | finish | endif
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36
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37 fun! <SID>XmlIndentWithPattern(line, pat)
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38 let s = substitute('x'.a:line, a:pat, "\1", 'g')
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39 return strlen(substitute(s, "[^\1].*$", '', ''))
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40 endfun
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41
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42 " [-- check if it's xml --]
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43 fun! <SID>XmlIndentSynCheck(lnum)
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44 if '' != &syntax
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45 let syn1 = synIDattr(synID(a:lnum, 1, 1), 'name')
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46 let syn2 = synIDattr(synID(a:lnum, strlen(getline(a:lnum)) - 1, 1), 'name')
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47 if '' != syn1 && syn1 !~ 'xml' && '' != syn2 && syn2 !~ 'xml'
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48 " don't indent pure non-xml code
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49 return 0
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50 elseif syn1 =~ '^xmlComment' && syn2 =~ '^xmlComment'
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51 " indent comments specially
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52 return -1
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7
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53 endif
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54 endif
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55 return 1
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56 endfun
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57
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58 " [-- return the sum of indents of a:lnum --]
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59 fun! <SID>XmlIndentSum(lnum, style, add)
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60 let line = getline(a:lnum)
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61 if a:style == match(line, '^\s*</')
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62 return (&sw *
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63 \ (<SID>XmlIndentWithPattern(line, b:xml_indent_open)
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64 \ - <SID>XmlIndentWithPattern(line, b:xml_indent_close)
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65 \ - <SID>XmlIndentWithPattern(line, '.\{-}/>'))) + a:add
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66 else
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67 return a:add
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68 endif
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69 endfun
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70
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71 fun! XmlIndentGet(lnum, use_syntax_check)
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72 " Find a non-empty line above the current line.
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73 let lnum = prevnonblank(a:lnum - 1)
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74
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75 " Hit the start of the file, use zero indent.
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76 if lnum == 0
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77 return 0
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78 endif
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79
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80 if a:use_syntax_check
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81 let check_lnum = <SID>XmlIndentSynCheck(lnum)
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82 let check_alnum = <SID>XmlIndentSynCheck(a:lnum)
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83 if 0 == check_lnum || 0 == check_alnum
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84 return indent(a:lnum)
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85 elseif -1 == check_lnum || -1 == check_alnum
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86 return -1
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7
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87 endif
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88 endif
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89
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90 let ind = <SID>XmlIndentSum(lnum, -1, indent(lnum))
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91 let ind = <SID>XmlIndentSum(a:lnum, 0, ind)
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92
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93 return ind
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94 endfun
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95
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96 " vim:ts=8
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