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12
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1 local Luan = require "luan:Luan.luan"
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2 local error = Luan.error
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3 local type = Luan.type or error()
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4 local ipairs = Luan.ipairs or error()
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5 local stringify = Luan.stringify or error()
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13
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6 local Io = require "luan:Io.luan"
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7 local output_of = Io.output_of or error()
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12
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8 local Parsers = require "luan:Parsers.luan"
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9 local bbcode_parse = Parsers.bbcode_parse or error()
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10 local Html = require "luan:Html.luan"
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11 local html_encode = Html.encode or error()
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21
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12 local html_parse = Html.parse or error()
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12
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13 local Table = require "luan:Table.luan"
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14 local is_list = Table.is_list or error()
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21
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15 local concat = Table.concat or error()
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13
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16 local String = require "luan:String.luan"
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17 local gsub = String.gsub or error()
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21
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18 local matches = String.matches or error()
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12
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19 local User = require "site:/lib/User.luan"
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13
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20 local Shared = require "site:/lib/Shared.luan"
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21 local list_to_set = Shared.list_to_set or error()
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20
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22 local to_list = Shared.to_list or error()
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12
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23 local Logging = require "luan:logging/Logging.luan"
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24 local logger = Logging.logger "Bbcode"
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25
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26
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27 local Bbcode = {}
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28
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29 local to_html
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30 local html = {}
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31
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20
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32 function html.b(bbcode,options)
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33 %><b><% to_html(bbcode.contents,options) %></b><%
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34 end
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35
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36 function html.i(bbcode,options)
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37 %><i><% to_html(bbcode.contents,options) %></i><%
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38 end
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39
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40 function html.u(bbcode,options)
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41 %><u><% to_html(bbcode.contents,options) %></u><%
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12
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42 end
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43
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20
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44 function html.s(bbcode,options)
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45 %><s><% to_html(bbcode.contents,options) %></s><%
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12
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46 end
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47
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20
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48 function html.sup(bbcode,options)
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49 %><sup><% to_html(bbcode.contents,options) %></sup><%
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12
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50 end
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51
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20
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52 function html.brackets(bbcode,options)
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53 %>[<% to_html(bbcode.contents,options) %>]<%
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54 end
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55
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56 function html.url(bbcode,options)
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12
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57 local url = bbcode.param
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58 if url == nil then
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59 url = html_encode(bbcode.contents)
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60 %><a href="<%=url%>"><%=url%></a><%
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61 else
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62 url = html_encode(url)
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20
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63 %><a href="<%=url%>"><% to_html(bbcode.contents,options) %></a><%
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12
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64 end
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65 end
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66
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20
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67 function html.code(bbcode,options)
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68 local s = gsub(bbcode.contents,[[^\n]],"")
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69 %><code><%= html_encode(s) %></code><%
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70 options.strip_newline = true
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12
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71 end
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72
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20
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73 function html.img(bbcode,options)
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12
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74 %><img src="<%= html_encode(bbcode.contents) %>"><%
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75 end
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76
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20
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77 function html.color(bbcode,options)
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78 %><span style="color:<%=bbcode.param%>"><% to_html(bbcode.contents,options) %></span><%
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12
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79 end
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80
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20
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81 function html.size(bbcode,options)
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82 %><span style="font-size:<%=bbcode.param%>%"><% to_html(bbcode.contents,options) %></span><%
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12
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83 end
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84
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20
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85 function html.quote(bbcode,options)
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12
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86 %><blockquote><%
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87 local user_name = bbcode.param
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88 if user_name ~= nil then
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89 local user = User.get_by_name(user_name)
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90 if user == nil then
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91 %><%= user_name %> wrote:<%
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92 else
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93 %><a href="/user_something"><%= user_name %></a> wrote:<%
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94 end
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20
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95 else
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96 options.strip_newline = true
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12
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97 end
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20
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98 to_html(bbcode.contents,options)
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12
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99 %></blockquote><%
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20
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100 options.strip_newline = true
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12
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101 end
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102
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20
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103 function html.video(bbcode,options)
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12
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104 local url = html_encode(bbcode.contents)
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105 local site = bbcode.site
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106 if site == "youtube" then
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107 %><iframe width="420" height="315" src="https://www.youtube.com/embed/<%=bbcode.id%><%
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108 local start = bbcode.start
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109 if start ~= nil then
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110 %>?start=<%=start%><%
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111 end
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112 %>" frameborder="0" allowfullscreen></iframe><%
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113 elseif site == "bitchute" then
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114 %><iframe width="420" height="315" scrolling="no" frameborder="0" style="border: none;" src="https://www.bitchute.com/embed/<%=bbcode.id%>/"></iframe><%
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115 else
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116 %><a href="<%=url%>"><%=url%></a><%
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117 end
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118 end
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119
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20
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120 local function list_to_html(bbcode,options)
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121 local list = to_list(bbcode.contents)
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122 for _, item in ipairs(list) do
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123 if type(item) == "table" and item.name == "li" then
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124 %><li><% to_html(item.contents,options) %></li><%
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125 end
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126 end
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127 options.strip_newline = true
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128 end
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129
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130 function html.ul(bbcode,options)
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131 %><ul><%
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132 list_to_html(bbcode,options)
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133 %></ul><%
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134 end
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135
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136 function html.ol(bbcode,options)
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137 %><ol><%
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138 list_to_html(bbcode,options)
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139 %></ol><%
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140 end
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141
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142 function to_html(bbcode,options)
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143 if options.strip_newline then
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144 if type(bbcode) == "string" then
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145 bbcode = gsub(bbcode,[[^\n]],"")
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146 end
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147 options.strip_newline = false
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148 end
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12
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149 if type(bbcode) == "string" then
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150 %><%= html_encode(bbcode) %><%
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151 else
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152 type(bbcode) == "table" or error()
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153 if is_list(bbcode) then
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154 for _, v in ipairs(bbcode) do
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20
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155 to_html(v,options)
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12
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156 end
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157 else
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158 local fn = html[bbcode.name] or error(bbcode.name.." not handled")
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20
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159 fn(bbcode,options)
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12
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160 end
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161 end
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162 end
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163
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164 function Bbcode.to_html(bbcode)
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165 bbcode = bbcode_parse(bbcode)
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20
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166 %><div message><%
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167 to_html(bbcode,{strip_newline=false})
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168 %></div><%
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12
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169 end
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170
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13
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171
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172 local doesnt_nest = list_to_set{
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173 "url"
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174 "code"
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175 "img"
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176 "video"
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177 }
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178
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179 local function preprocess(bbcode)
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180 if type(bbcode) == "string" then
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181 bbcode = gsub( bbcode, [[(^|\s)(https?://\S+)]], "$1[url]$2[/url]" )
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182 %><%= bbcode %><%
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183 else
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184 type(bbcode) == "table" or error()
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185 if is_list(bbcode) then
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186 for _, v in ipairs(bbcode) do
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187 preprocess(v)
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188 end
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189 else
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190 local name = bbcode.name
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191 local param = bbcode.param
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192 %>[<%=name%><%
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193 if param ~= nil then
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194 %>=<%=param%><%
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195 end
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196 %>]<%
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197 if doesnt_nest[name] then
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198 %><%=bbcode.contents%><%
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199 else
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200 preprocess(bbcode.contents)
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201 end
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20
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202 if name == "code" and param ~= nil then
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203 %>[/<%=name%>=<%=param%>]<%
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204 else
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205 %>[/<%=name%>]<%
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206 end
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13
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207 end
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208 end
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209 end
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210
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211 function Bbcode.preprocess(bbcode)
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212 bbcode = bbcode_parse(bbcode)
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213 return output_of(function()
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214 preprocess(bbcode)
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215 end)
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216 end
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217
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21
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218 function Bbcode.remove_html(text)
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219 local ends_with_newline = matches(text,[[\n$]])
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220 local t = {}
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221 local html = html_parse(text)
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222 local is_first = true
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223 for _, v in ipairs(html) do
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224 if type(v) == "string" then
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225 t[#t+1] = v
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226 else
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227 local name = v.name
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228 if name == "div" then
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229 if not is_first then
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230 t[#t+1] = "\n"
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231 end
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232 elseif name == "/div" or name == "br" then
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233 -- ignore
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234 else
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235 error("unexpected tag: "..name)
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236 end
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237 end
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238 is_first = false
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239 end
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240 if not ends_with_newline then
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241 t[#t+1] = "\n"
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242 end
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243 return concat(t)
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244 end
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245
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246
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12
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247 return Bbcode
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