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@@ -1,236 +1,236 b'' | |||
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1 | 1 | # coding=utf-8 |
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2 | 2 | |
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3 | 3 | import re |
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4 | 4 | import random |
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5 | 5 | import bbcode |
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6 | 6 | |
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7 | 7 | from urllib.parse import unquote |
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8 | 8 | |
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9 | 9 | from django.core.exceptions import ObjectDoesNotExist |
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10 | 10 | from django.core.urlresolvers import reverse |
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11 | 11 | |
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12 | 12 | import boards |
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13 | 13 | |
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14 | 14 | |
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15 | 15 | __author__ = 'neko259' |
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16 | 16 | |
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17 | 17 | |
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18 | 18 | REFLINK_PATTERN = re.compile(r'^\d+$') |
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19 | 19 | MULTI_NEWLINES_PATTERN = re.compile(r'(\r?\n){2,}') |
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20 | 20 | ONE_NEWLINE = '\n' |
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21 | 21 | REGEX_URL = re.compile(r'https?\://[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(/\S*)?') |
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22 | 22 | LINE_BREAK_HTML = '<div class="br"></div>' |
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23 | 23 | |
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24 | 24 | |
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25 | 25 | class TextFormatter(): |
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26 | 26 | """ |
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27 | 27 | An interface for formatter that can be used in the text format panel |
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28 | 28 | """ |
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29 | 29 | |
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30 | 30 | def __init__(self): |
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31 | 31 | pass |
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32 | 32 | |
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33 | 33 | name = '' |
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34 | 34 | |
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35 | 35 | # Left and right tags for the button preview |
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36 | 36 | preview_left = '' |
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37 | 37 | preview_right = '' |
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38 | 38 | |
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39 | 39 | # Left and right characters for the textarea input |
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40 | 40 | format_left = '' |
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41 | 41 | format_right = '' |
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42 | 42 | |
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43 | 43 | |
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44 | 44 | class AutolinkPattern(): |
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45 | 45 | def handleMatch(self, m): |
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46 | 46 | link_element = etree.Element('a') |
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47 | 47 | href = m.group(2) |
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48 | 48 | link_element.set('href', href) |
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49 | 49 | link_element.text = href |
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50 | 50 | |
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51 | 51 | return link_element |
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52 | 52 | |
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53 | 53 | |
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54 | 54 | class QuotePattern(TextFormatter): |
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55 | 55 | name = '>q' |
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56 | 56 | preview_left = '<span class="quote">' |
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57 | 57 | preview_right = '</span>' |
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58 | 58 | |
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59 | 59 | format_left = '[quote]' |
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60 | 60 | format_right = '[/quote]' |
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61 | 61 | |
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62 | 62 | |
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63 | 63 | class SpoilerPattern(TextFormatter): |
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64 | 64 | name = 'spoiler' |
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65 | 65 | preview_left = '<span class="spoiler">' |
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66 | 66 | preview_right = '</span>' |
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67 | 67 | |
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68 | 68 | format_left = '[spoiler]' |
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69 | 69 | format_right = '[/spoiler]' |
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70 | 70 | |
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71 | 71 | |
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72 | 72 | class CommentPattern(TextFormatter): |
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73 | 73 | name = '' |
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74 | 74 | preview_left = '<span class="comment">// ' |
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75 | 75 | preview_right = '</span>' |
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76 | 76 | |
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77 | 77 | format_left = '[comment]' |
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78 | 78 | format_right = '[/comment]' |
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79 | 79 | |
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80 | 80 | |
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81 | 81 | # TODO Use <s> tag here |
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82 | 82 | class StrikeThroughPattern(TextFormatter): |
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83 | 83 | name = 's' |
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84 | 84 | preview_left = '<span class="strikethrough">' |
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85 | 85 | preview_right = '</span>' |
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86 | 86 | |
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87 | 87 | format_left = '[s]' |
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88 | 88 | format_right = '[/s]' |
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89 | 89 | |
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90 | 90 | |
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91 | 91 | class ItalicPattern(TextFormatter): |
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92 | 92 | name = 'i' |
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93 | 93 | preview_left = '<i>' |
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94 | 94 | preview_right = '</i>' |
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95 | 95 | |
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96 | 96 | format_left = '[i]' |
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97 | 97 | format_right = '[/i]' |
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98 | 98 | |
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99 | 99 | |
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100 | 100 | class BoldPattern(TextFormatter): |
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101 | 101 | name = 'b' |
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102 | 102 | preview_left = '<b>' |
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103 | 103 | preview_right = '</b>' |
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104 | 104 | |
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105 | 105 | format_left = '[b]' |
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106 | 106 | format_right = '[/b]' |
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107 | 107 | |
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108 | 108 | |
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109 | 109 | class CodePattern(TextFormatter): |
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110 | 110 | name = 'code' |
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111 | 111 | preview_left = '<code>' |
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112 | 112 | preview_right = '</code>' |
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113 | 113 | |
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114 | 114 | format_left = '[code]' |
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115 | 115 | format_right = '[/code]' |
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116 | 116 | |
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117 | 117 | |
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118 | 118 | def render_reflink(tag_name, value, options, parent, context): |
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119 | 119 | result = '>>%s' % value |
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120 | 120 | |
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121 | 121 | if REFLINK_PATTERN.match(value): |
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122 | 122 | post_id = int(value) |
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123 | 123 | |
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124 | 124 | try: |
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125 | 125 | post = boards.models.Post.objects.get(id=post_id) |
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126 | 126 | |
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127 | 127 | result = post.get_link_view() |
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128 | 128 | except ObjectDoesNotExist: |
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129 | 129 | pass |
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130 | 130 | |
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131 | 131 | return result |
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132 | 132 | |
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133 | 133 | |
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134 | 134 | def render_quote(tag_name, value, options, parent, context): |
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135 | 135 | source = '' |
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136 | 136 | if 'source' in options: |
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137 | 137 | source = options['source'] |
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138 | 138 | elif 'quote' in options: |
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139 | 139 | source = options['quote'] |
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140 | 140 | |
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141 | 141 | if source: |
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142 | 142 | result = '<div class="multiquote"><div class="quote-header">%s</div><div class="quote-text">%s</div></div>' % (source, value) |
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143 | 143 | else: |
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144 | 144 | # Insert a ">" at the start of every line |
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145 | 145 | result = '<span class="quote">>{}</span>'.format( |
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146 | 146 | value.replace(LINE_BREAK_HTML, |
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147 | 147 | '{}>'.format(LINE_BREAK_HTML))) |
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148 | 148 | |
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149 | 149 | return result |
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150 | 150 | |
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151 | 151 | |
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152 | 152 | def render_notification(tag_name, value, options, parent, content): |
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153 | 153 | username = value.lower() |
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154 | 154 | |
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155 | 155 | return '<a href="{}" class="user-cast">@{}</a>'.format( |
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156 | 156 | reverse('notifications', kwargs={'username': username}), username) |
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157 | 157 | |
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158 | 158 | |
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159 | 159 | def render_tag(tag_name, value, options, parent, context): |
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160 | 160 | tag_name = value.lower() |
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161 | 161 | |
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162 | 162 | try: |
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163 | 163 | url = boards.models.Tag.objects.get(name=tag_name).get_view() |
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164 | 164 | except ObjectDoesNotExist: |
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165 | 165 | url = tag_name |
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166 | 166 | |
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167 | 167 | return url |
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168 | 168 | |
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169 | 169 | |
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170 | 170 | def render_spoiler(tag_name, value, options, parent, context): |
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171 | 171 | text_len = len(value) |
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172 |
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173 |
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174 |
return '<span class="spoiler">{}{}{}</span>'.format( |
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175 |
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172 | space_count = random.randint(0, text_len * 2) | |
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173 | side_spaces = ' ' * (space_count // 2) | |
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174 | return '<span class="spoiler">{}{}{}</span>'.format(side_spaces, value, | |
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175 | side_spaces) | |
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176 | 176 | |
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177 | 177 | return quote_element |
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178 | 178 | |
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179 | 179 | |
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180 | 180 | |
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181 | 181 | formatters = [ |
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182 | 182 | QuotePattern, |
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183 | 183 | SpoilerPattern, |
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184 | 184 | ItalicPattern, |
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185 | 185 | BoldPattern, |
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186 | 186 | CommentPattern, |
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187 | 187 | StrikeThroughPattern, |
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188 | 188 | CodePattern, |
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189 | 189 | ] |
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190 | 190 | |
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191 | 191 | |
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192 | 192 | PREPARSE_PATTERNS = { |
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193 | 193 | r'(?<!>)>>(\d+)': r'[post]\1[/post]', # Reflink ">>123" |
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194 | 194 | r'^>([^>].+)': r'[quote]\1[/quote]', # Quote ">text" |
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195 | 195 | r'^//(.+)': r'[comment]\1[/comment]', # Comment "//text" |
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196 | 196 | r'\B@(\w+)': r'[user]\1[/user]', # User notification "@user" |
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197 | 197 | } |
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198 | 198 | |
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199 | 199 | |
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200 | 200 | class Parser: |
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201 | 201 | def __init__(self): |
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202 | 202 | # The newline hack is added because br's margin does not work in all |
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203 | 203 | # browsers except firefox, when the div's does. |
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204 | 204 | self.parser = bbcode.Parser(newline=LINE_BREAK_HTML) |
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205 | 205 | |
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206 | 206 | self.parser.add_formatter('post', render_reflink, strip=True) |
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207 | 207 | self.parser.add_formatter('quote', render_quote, strip=True) |
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208 | 208 | self.parser.add_formatter('user', render_notification, strip=True) |
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209 | 209 | self.parser.add_formatter('tag', render_tag, strip=True) |
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210 | 210 | self.parser.add_formatter('spoiler', render_spoiler, strip=True) |
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211 | 211 | self.parser.add_simple_formatter( |
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212 | 212 | 'comment', '<span class="comment">//%(value)s</span>') |
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213 | 213 | self.parser.add_simple_formatter( |
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214 | 214 | 's', '<span class="strikethrough">%(value)s</span>') |
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215 | 215 | # TODO Why not use built-in tag? |
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216 | 216 | self.parser.add_simple_formatter('code', |
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217 | 217 | '<pre><code>%(value)s</pre></code>', |
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218 | 218 | render_embedded=False) |
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219 | 219 | |
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220 | 220 | def preparse(self, text): |
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221 | 221 | """ |
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222 | 222 | Performs manual parsing before the bbcode parser is used. |
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223 | 223 | Preparsed text is saved as raw and the text before preparsing is lost. |
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224 | 224 | """ |
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225 | 225 | new_text = MULTI_NEWLINES_PATTERN.sub(ONE_NEWLINE, text) |
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226 | 226 | |
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227 | 227 | for key, value in PREPARSE_PATTERNS.items(): |
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228 | 228 | new_text = re.sub(key, value, new_text, flags=re.MULTILINE) |
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229 | 229 | |
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230 | 230 | for link in REGEX_URL.findall(text): |
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231 | 231 | new_text = new_text.replace(link, unquote(link)) |
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232 | 232 | |
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233 | 233 | return new_text |
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234 | 234 | |
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235 | 235 | def parse(self, text): |
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236 | 236 | return self.parser.format(text) |
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