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6051
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1 " Vim indent file
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2 " Language: R Documentation (Help), *.Rd
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3 " Author: Jakson Alves de Aquino <jalvesaq@gmail.com>
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4 " Last Change: Wed Jul 09, 2014 07:34PM
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5
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6
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7 " Only load this indent file when no other was loaded.
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8 if exists("b:did_indent")
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9 finish
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10 endif
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11 runtime indent/r.vim
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12 let s:RIndent = function(substitute(&indentexpr, "()", "", ""))
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13 let b:did_indent = 1
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14
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15 setlocal indentkeys=0{,0},:,!^F,o,O,e
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16 setlocal indentexpr=GetRHelpIndent()
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17
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18 " Only define the function once.
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19 if exists("*GetRHelpIndent")
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20 finish
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21 endif
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22
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23 setlocal noautoindent
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24 setlocal nocindent
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25 setlocal nosmartindent
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26 setlocal nolisp
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27
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28 setlocal indentkeys=0{,0},:,!^F,o,O,e
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29 setlocal indentexpr=GetCorrectRHelpIndent()
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30
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31 function s:SanitizeRHelpLine(line)
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32 let newline = substitute(a:line, '\\\\', "x", "g")
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33 let newline = substitute(newline, '\\{', "x", "g")
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34 let newline = substitute(newline, '\\}', "x", "g")
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35 let newline = substitute(newline, '\\%', "x", "g")
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36 let newline = substitute(newline, '%.*', "", "")
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37 let newline = substitute(newline, '\s*$', "", "")
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38 return newline
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39 endfunction
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40
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41 function GetRHelpIndent()
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42
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43 let clnum = line(".") " current line
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44 if clnum == 1
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45 return 0
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46 endif
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47 let cline = getline(clnum)
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48
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49 if cline =~ '^\s*}\s*$'
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50 let i = clnum
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51 let bb = -1
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52 while bb != 0 && i > 1
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53 let i -= 1
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54 let line = s:SanitizeRHelpLine(getline(i))
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55 let line2 = substitute(line, "{", "", "g")
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56 let openb = strlen(line) - strlen(line2)
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57 let line3 = substitute(line2, "}", "", "g")
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58 let closeb = strlen(line2) - strlen(line3)
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59 let bb += openb - closeb
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60 endwhile
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61 return indent(i)
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62 endif
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63
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64 if cline =~ '^\s*#ifdef\>' || cline =~ '^\s*#endif\>'
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65 return 0
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66 endif
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67
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68 let lnum = clnum - 1
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69 let line = getline(lnum)
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70 if line =~ '^\s*#ifdef\>' || line =~ '^\s*#endif\>'
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71 let lnum -= 1
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72 let line = getline(lnum)
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73 endif
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74 while lnum > 1 && (line =~ '^\s*$' || line =~ '^#ifdef' || line =~ '^#endif')
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75 let lnum -= 1
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76 let line = getline(lnum)
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77 endwhile
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78 if lnum == 1
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79 return 0
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80 endif
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81 let line = s:SanitizeRHelpLine(line)
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82 let line2 = substitute(line, "{", "", "g")
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83 let openb = strlen(line) - strlen(line2)
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84 let line3 = substitute(line2, "}", "", "g")
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85 let closeb = strlen(line2) - strlen(line3)
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86 let bb = openb - closeb
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87
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88 let ind = indent(lnum) + (bb * &sw)
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89
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90 if line =~ '^\s*}\s*$'
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91 let ind = indent(lnum)
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92 endif
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93
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94 if ind < 0
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95 return 0
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96 endif
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97
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98 return ind
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99 endfunction
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100
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101 function GetCorrectRHelpIndent()
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102 let lastsection = search('^\\[a-z]*{', "bncW")
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103 let secname = getline(lastsection)
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104 if secname =~ '^\\usage{' || secname =~ '^\\examples{' || secname =~ '^\\dontshow{' || secname =~ '^\\dontrun{' || secname =~ '^\\donttest{' || secname =~ '^\\testonly{' || secname =~ '^\\method{.*}{.*}('
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105 return s:RIndent()
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106 else
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107 return GetRHelpIndent()
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108 endif
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109 endfunction
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110
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111 " vim: sw=2
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