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7
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1 " Vim syntax support file
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2 " Maintainer: Bram Moolenaar <Bram@vim.org>
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29
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3 " Last Change: 2004 Oct 10
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7
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4 " (modified by David Ne\v{c}as (Yeti) <yeti@physics.muni.cz>)
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5 " (XHTML support by Panagiotis Issaris <takis@lumumba.luc.ac.be>)
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6
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7 " Transform a file into HTML, using the current syntax highlighting.
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8
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9 " Number lines when explicitely requested or when `number' is set
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10 if exists("html_number_lines")
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11 let s:numblines = html_number_lines
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12 else
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13 let s:numblines = &number
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14 endif
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15
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16 " When not in gui we can only guess the colors.
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17 if has("gui_running")
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18 let s:whatterm = "gui"
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19 else
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20 let s:whatterm = "cterm"
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21 if &t_Co == 8
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22 let s:cterm_color0 = "#808080"
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23 let s:cterm_color1 = "#ff6060"
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24 let s:cterm_color2 = "#00ff00"
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25 let s:cterm_color3 = "#ffff00"
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26 let s:cterm_color4 = "#8080ff"
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27 let s:cterm_color5 = "#ff40ff"
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28 let s:cterm_color6 = "#00ffff"
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29 let s:cterm_color7 = "#ffffff"
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30 else
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31 let s:cterm_color0 = "#000000"
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32 let s:cterm_color1 = "#c00000"
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33 let s:cterm_color2 = "#008000"
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34 let s:cterm_color3 = "#804000"
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35 let s:cterm_color4 = "#0000c0"
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36 let s:cterm_color5 = "#c000c0"
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37 let s:cterm_color6 = "#008080"
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38 let s:cterm_color7 = "#c0c0c0"
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39 let s:cterm_color8 = "#808080"
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40 let s:cterm_color9 = "#ff6060"
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41 let s:cterm_color10 = "#00ff00"
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42 let s:cterm_color11 = "#ffff00"
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43 let s:cterm_color12 = "#8080ff"
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44 let s:cterm_color13 = "#ff40ff"
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45 let s:cterm_color14 = "#00ffff"
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46 let s:cterm_color15 = "#ffffff"
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47 endif
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48 endif
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49
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50 " Return good color specification: in GUI no transformation is done, in
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51 " terminal return RGB values of known colors and empty string on unknown
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52 if s:whatterm == "gui"
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53 function! s:HtmlColor(color)
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54 return a:color
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55 endfun
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56 else
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57 function! s:HtmlColor(color)
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58 if exists("s:cterm_color" . a:color)
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59 execute "return s:cterm_color" . a:color
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60 else
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61 return ""
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62 endif
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63 endfun
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64 endif
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65
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66 if !exists("html_use_css")
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67 " Return opening HTML tag for given highlight id
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68 function! s:HtmlOpening(id)
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69 let a = ""
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70 if synIDattr(a:id, "inverse")
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71 " For inverse, we always must set both colors (and exchange them)
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72 let x = s:HtmlColor(synIDattr(a:id, "fg#", s:whatterm))
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73 let a = a . '<span style="background-color: ' . ( x != "" ? x : s:fgc ) . '">'
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74 let x = s:HtmlColor(synIDattr(a:id, "bg#", s:whatterm))
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75 let a = a . '<font color="' . ( x != "" ? x : s:bgc ) . '">'
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76 else
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77 let x = s:HtmlColor(synIDattr(a:id, "bg#", s:whatterm))
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78 if x != "" | let a = a . '<span style="background-color: ' . x . '">' | endif
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79 let x = s:HtmlColor(synIDattr(a:id, "fg#", s:whatterm))
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80 if x != "" | let a = a . '<font color="' . x . '">' | endif
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81 endif
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82 if synIDattr(a:id, "bold") | let a = a . "<b>" | endif
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83 if synIDattr(a:id, "italic") | let a = a . "<i>" | endif
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84 if synIDattr(a:id, "underline") | let a = a . "<u>" | endif
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85 return a
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86 endfun
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87
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88 " Return closing HTML tag for given highlight id
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89 function s:HtmlClosing(id)
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90 let a = ""
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91 if synIDattr(a:id, "underline") | let a = a . "</u>" | endif
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92 if synIDattr(a:id, "italic") | let a = a . "</i>" | endif
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93 if synIDattr(a:id, "bold") | let a = a . "</b>" | endif
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94 if synIDattr(a:id, "inverse")
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95 let a = a . '</font></span>'
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96 else
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97 let x = s:HtmlColor(synIDattr(a:id, "fg#", s:whatterm))
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98 if x != "" | let a = a . '</font>' | endif
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99 let x = s:HtmlColor(synIDattr(a:id, "bg#", s:whatterm))
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100 if x != "" | let a = a . '</span>' | endif
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101 endif
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102 return a
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103 endfun
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104 endif
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105
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106 " Return CSS style describing given highlight id (can be empty)
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107 function! s:CSS1(id)
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108 let a = ""
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109 if synIDattr(a:id, "inverse")
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110 " For inverse, we always must set both colors (and exchange them)
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111 let x = s:HtmlColor(synIDattr(a:id, "bg#", s:whatterm))
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112 let a = a . "color: " . ( x != "" ? x : s:bgc ) . "; "
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113 let x = s:HtmlColor(synIDattr(a:id, "fg#", s:whatterm))
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114 let a = a . "background-color: " . ( x != "" ? x : s:fgc ) . "; "
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115 else
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116 let x = s:HtmlColor(synIDattr(a:id, "fg#", s:whatterm))
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117 if x != "" | let a = a . "color: " . x . "; " | endif
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118 let x = s:HtmlColor(synIDattr(a:id, "bg#", s:whatterm))
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119 if x != "" | let a = a . "background-color: " . x . "; " | endif
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120 endif
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121 if synIDattr(a:id, "bold") | let a = a . "font-weight: bold; " | endif
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122 if synIDattr(a:id, "italic") | let a = a . "font-style: italic; " | endif
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123 if synIDattr(a:id, "underline") | let a = a . "text-decoration: underline; " | endif
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124 return a
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125 endfun
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126
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127 " Figure out proper MIME charset from the 'encoding' option.
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128 if exists("html_use_encoding")
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129 let s:html_encoding = html_use_encoding
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130 else
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131 let s:vim_encoding = &encoding
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132 if s:vim_encoding =~ '^8bit\|^2byte'
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133 let s:vim_encoding = substitute(s:vim_encoding, '^8bit-\|^2byte-', '', '')
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134 endif
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135 if s:vim_encoding == 'latin1'
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136 let s:html_encoding = 'iso-8859-1'
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137 elseif s:vim_encoding =~ "^cp12"
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138 let s:html_encoding = substitute(s:vim_encoding, 'cp', 'windows-', '')
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139 elseif s:vim_encoding == 'sjis'
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140 let s:html_encoding = 'Shift_JIS'
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141 elseif s:vim_encoding == 'euc-cn'
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142 let s:html_encoding = 'GB_2312-80'
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143 elseif s:vim_encoding == 'euc-tw'
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144 let s:html_encoding = ""
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145 elseif s:vim_encoding =~ '^euc\|^iso\|^koi'
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146 let s:html_encoding = substitute(s:vim_encoding, '.*', '\U\0', '')
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147 elseif s:vim_encoding == 'cp949'
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148 let s:html_encoding = 'KS_C_5601-1987'
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149 elseif s:vim_encoding == 'cp936'
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150 let s:html_encoding = 'GBK'
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151 elseif s:vim_encoding =~ '^ucs\|^utf'
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152 let s:html_encoding = 'UTF-8'
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153 else
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154 let s:html_encoding = ""
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155 endif
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156 endif
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157
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158
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159 " Set some options to make it work faster.
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160 " Expand tabs in original buffer to get 'tabstop' correctly used.
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161 " Don't report changes for :substitute, there will be many of them.
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162 let s:old_title = &title
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163 let s:old_icon = &icon
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164 let s:old_et = &l:et
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165 let s:old_report = &report
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166 let s:old_search = @/
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167 set notitle noicon
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168 setlocal et
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169 set report=1000000
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170
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171 " Split window to create a buffer with the HTML file.
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172 let s:orgbufnr = winbufnr(0)
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173 if expand("%") == ""
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174 new Untitled.html
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175 else
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176 new %.html
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177 endif
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178 let s:newwin = winnr()
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179 let s:orgwin = bufwinnr(s:orgbufnr)
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180
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181 set modifiable
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182 %d
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183 let s:old_paste = &paste
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184 set paste
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185 let s:old_magic = &magic
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186 set magic
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187
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188 if exists("use_xhtml")
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189 exe "normal! a<?xml version=\"1.0\"?>\n\e"
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190 let tag_close = '/>'
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191 else
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192 let tag_close = '>'
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193 endif
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194
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195 " HTML header, with the title and generator ;-). Left free space for the CSS,
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196 " to be filled at the end.
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197 exe "normal! a<html>\n<head>\n<title>\e"
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198 exe "normal! a" . expand("%:p:~") . "</title>\n\e"
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199 exe "normal! a<meta name=\"Generator\" content=\"Vim/" . v:version/100 . "." . v:version %100 . '"' . tag_close . "\n\e"
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200 if s:html_encoding != ""
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201 exe "normal! a<meta http-equiv=\"content-type\" content=\"text/html; charset=" . s:html_encoding . '"' . tag_close . "\n\e"
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202 endif
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203 if exists("html_use_css")
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204 exe "normal! a<style type=\"text/css\">\n<!--\n-->\n</style>\n\e"
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205 endif
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206 if exists("html_no_pre")
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207 exe "normal! a</head>\n<body>\n\e"
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208 else
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209 exe "normal! a</head>\n<body>\n<pre>\n\e"
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210 endif
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211
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212 exe s:orgwin . "wincmd w"
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213
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214 " List of all id's
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215 let s:idlist = ","
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216
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217 let s:expandedtab = ' '
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218 while strlen(s:expandedtab) < &ts
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219 let s:expandedtab = s:expandedtab . ' '
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220 endwhile
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221
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222 " Loop over all lines in the original text.
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223 " Use html_start_line and html_end_line if they are set.
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224 if exists("html_start_line")
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225 let s:lnum = html_start_line
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226 if s:lnum < 1 || s:lnum > line("$")
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227 let s:lnum = 1
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228 endif
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229 else
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230 let s:lnum = 1
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231 endif
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232 if exists("html_end_line")
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233 let s:end = html_end_line
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234 if s:end < s:lnum || s:end > line("$")
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235 let s:end = line("$")
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236 endif
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237 else
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238 let s:end = line("$")
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239 endif
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240
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29
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241 " Closed folds are kept in the HTML. Prepare the closed fold template text.
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242 if has('folding')
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243 let s:c = &fillchars[matchend(&fillchars, 'fold:')]
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244 if s:c == ''
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245 let s:c = '-'
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246 endif
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247 let s:htmlfoldtext = '+' . s:c
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248 while strlen(s:htmlfoldtext) < &columns
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249 let s:htmlfoldtext = s:htmlfoldtext . s:c
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250 endwhile
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251 unlet s:c
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252 endif
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253
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254
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7
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255 while s:lnum <= s:end
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256
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257 " Get the current line
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258 let s:line = getline(s:lnum)
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259 let s:new = ""
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260
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261 if has('folding') && foldclosed(s:lnum) > -1
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262 "
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263 " This is the beginning of a folded block
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264 "
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265 if s:numblines
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266 let s:new = strpart(' ', 0, strlen(line("$")) - strlen(s:lnum)) . s:lnum . ' '
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267 endif
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268 let s:line = foldtextresult(s:lnum)
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7
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269
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29
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270 let s:new = s:new . s:line
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271 if !exists("html_no_pre")
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272 let s:new = s:new . strpart(s:htmlfoldtext, strlen(s:new))
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273 endif
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274
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275 " Replace the reserved html characters
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276 let s:new = substitute(substitute(substitute(substitute(substitute(s:new, '&', '\&', 'g'), '<', '\<', 'g'), '>', '\>', 'g'), '"', '\"', 'g'), "\x0c", '<hr class="PAGE-BREAK">', 'g')
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277
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278 let s:id_name = "Folded"
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279 let s:id = hlID(s:id_name)
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280 let s:new = '<span class="' . s:id_name . '">' . s:new . '</span>'
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7
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281 " Add the class to class list if it's not there yet
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282 if stridx(s:idlist, "," . s:id . ",") == -1
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283 let s:idlist = s:idlist . s:id . ","
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284 endif
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285
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29
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286 " Skip to the end of the fold
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287 let s:lnum = foldclosedend(s:lnum)
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288
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289 else
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290 "
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291 " A line that is not folded.
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292 "
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293 let s:len = strlen(s:line)
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294
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295 if s:numblines
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296 let s:new = '<span class="lnr">' . strpart(' ', 0, strlen(line("$")) - strlen(s:lnum)) . s:lnum . '</span> '
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7
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297 endif
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29
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298
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299 " Loop over each character in the line
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300 let s:col = 1
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301 while s:col <= s:len
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302 let s:startcol = s:col " The start column for processing text
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303 let s:id = synID(s:lnum, s:col, 1)
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304 let s:col = s:col + 1
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305 " Speed loop (it's small - that's the trick)
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306 " Go along till we find a change in synID
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307 while s:col <= s:len && s:id == synID(s:lnum, s:col, 1) | let s:col = s:col + 1 | endwhile
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308
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309 " Output the text with the same synID, with class set to {s:id_name}
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310 let s:id = synIDtrans(s:id)
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311 let s:id_name = synIDattr(s:id, "name", s:whatterm)
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312 let s:new = s:new . '<span class="' . s:id_name . '">' . substitute(substitute(substitute(substitute(substitute(strpart(s:line, s:startcol - 1, s:col - s:startcol), '&', '\&', 'g'), '<', '\<', 'g'), '>', '\>', 'g'), '"', '\"', 'g'), "\x0c", '<hr class="PAGE-BREAK">', 'g') . '</span>'
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313 " Add the class to class list if it's not there yet
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314 if stridx(s:idlist, "," . s:id . ",") == -1
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315 let s:idlist = s:idlist . s:id . ","
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316 endif
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317
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318 if s:col > s:len
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319 break
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320 endif
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321 endwhile
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322 endif
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7
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323
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324 " Expand tabs
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325 let s:pad=0
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326 let s:start = 0
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327 let s:idx = stridx(s:line, "\t")
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328 while s:idx >= 0
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329 let s:i = &ts - ((s:start + s:pad + s:idx) % &ts)
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330 let s:new = substitute(s:new, '\t', strpart(s:expandedtab, 0, s:i), '')
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331 let s:pad = s:pad + s:i - 1
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332 let s:start = s:start + s:idx + 1
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333 let s:idx = stridx(strpart(s:line, s:start), "\t")
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334 endwhile
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335
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336 if exists("html_no_pre")
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337 if exists("use_xhtml")
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338 let s:new = substitute(s:new, ' ', '\ \ ', 'g') . '<br/>'
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339 else
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340 let s:new = substitute(s:new, ' ', '\ \ ', 'g') . '<br>'
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341 endif
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342 endif
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343 exe s:newwin . "wincmd w"
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344 exe "normal! a" . strtrans(s:new) . "\n\e"
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345 exe s:orgwin . "wincmd w"
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346 let s:lnum = s:lnum + 1
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347 +
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348 endwhile
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349 " Finish with the last line
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350 exe s:newwin . "wincmd w"
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351 if exists("html_no_pre")
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352 exe "normal! a\n</body>\n</html>\e"
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353 else
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354 exe "normal! a</pre>\n</body>\n</html>\e"
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355 endif
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356
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357
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358 " Now, when we finally know which, we define the colors and styles
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359 if exists("html_use_css")
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360 1;/<style type="text/+1
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361 endif
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362
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363 " Find out the background and foreground color.
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364 let s:fgc = s:HtmlColor(synIDattr(hlID("Normal"), "fg#", s:whatterm))
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365 let s:bgc = s:HtmlColor(synIDattr(hlID("Normal"), "bg#", s:whatterm))
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366 if s:fgc == ""
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367 let s:fgc = ( &background == "dark" ? "#ffffff" : "#000000" )
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368 endif
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369 if s:bgc == ""
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370 let s:bgc = ( &background == "dark" ? "#000000" : "#ffffff" )
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371 endif
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372
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373 " Normal/global attributes
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374 " For Netscape 4, set <body> attributes too, though, strictly speaking, it's
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375 " incorrect.
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376 if exists("html_use_css")
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377 if exists("html_no_pre")
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378 execute "normal! A\nbody { color: " . s:fgc . "; background-color: " . s:bgc . "; font-family: Courier, monospace; }\e"
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379 else
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380 execute "normal! A\npre { color: " . s:fgc . "; background-color: " . s:bgc . "; }\e"
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381 yank
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382 put
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383 execute "normal! ^cwbody\e"
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384 endif
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385 else
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386 if exists("html_no_pre")
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387 execute '%s:<body>:<body ' . 'bgcolor="' . s:bgc . '" text="' . s:fgc . '" style="font-family\: Courier, monospace;">'
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388 else
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389 execute '%s:<body>:<body ' . 'bgcolor="' . s:bgc . '" text="' . s:fgc . '">'
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390 endif
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391 endif
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392
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393 " Line numbering attributes
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394 if s:numblines
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395 if exists("html_use_css")
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396 execute "normal! A\n.lnr { " . s:CSS1(hlID("LineNr")) . "}\e"
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397 else
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398 execute '%s+<span class="lnr">\([^<]*\)</span>+' . s:HtmlOpening(hlID("LineNr")) . '\1' . s:HtmlClosing(hlID("LineNr")) . '+g'
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399 endif
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400 endif
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401
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402 " Gather attributes for all other classes
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403 let s:idlist = strpart(s:idlist, 1)
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404 while s:idlist != ""
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405 let s:attr = ""
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406 let s:col = stridx(s:idlist, ",")
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407 let s:id = strpart(s:idlist, 0, s:col)
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408 let s:idlist = strpart(s:idlist, s:col + 1)
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409 let s:attr = s:CSS1(s:id)
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410 let s:id_name = synIDattr(s:id, "name", s:whatterm)
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411 " If the class has some attributes, export the style, otherwise DELETE all
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412 " its occurences to make the HTML shorter
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413 if s:attr != ""
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414 if exists("html_use_css")
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415 execute "normal! A\n." . s:id_name . " { " . s:attr . "}"
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416 else
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417 execute '%s+<span class="' . s:id_name . '">\([^<]*\)</span>+' . s:HtmlOpening(s:id) . '\1' . s:HtmlClosing(s:id) . '+g'
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418 endif
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419 else
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420 execute '%s+<span class="' . s:id_name . '">\([^<]*\)</span>+\1+g'
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421 if exists("html_use_css")
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422 1;/<style type="text/+1
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423 endif
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424 endif
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425 endwhile
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426
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427 " Add hyperlinks
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428 %s+\(http://\S\{-}\)\(\([.,;:}]\=\(\s\|$\)\)\|[\\"'<>]\|>\|<\)+<A HREF="\1">\1</A>\2+ge
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429
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430 " The DTD
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431 if exists("html_use_css")
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432 exe "normal! gg0i<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01//EN\" \"http://www.w3.org/TR/html4/strict.dtd\">\n\e"
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433 endif
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434
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435 " Cleanup
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436 %s:\s\+$::e
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437
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438 " Restore old settings
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439 let &report = s:old_report
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440 let &title = s:old_title
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441 let &icon = s:old_icon
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442 let &paste = s:old_paste
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443 let &magic = s:old_magic
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444 let @/ = s:old_search
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445 exe s:orgwin . "wincmd w"
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446 let &l:et = s:old_et
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447 exe s:newwin . "wincmd w"
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448
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449 " Save a little bit of memory (worth doing?)
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450 unlet s:old_et s:old_paste s:old_icon s:old_report s:old_title s:old_search
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451 unlet s:whatterm s:idlist s:lnum s:end s:fgc s:bgc s:old_magic
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452 unlet! s:col s:id s:attr s:len s:line s:new s:did_retab s:numblines
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453 unlet s:orgwin s:newwin s:orgbufnr
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454 delfunc s:HtmlColor
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455 delfunc s:CSS1
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456 if !exists("html_use_css")
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457 delfunc s:HtmlOpening
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458 delfunc s:HtmlClosing
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459 endif
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