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bgneal@124
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1 """
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bgneal@211
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2 Smiley classes and functions.
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3
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4 """
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5 from django.utils.safestring import SafeData
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6 from django.utils.html import conditional_escape
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7
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8 from models import Smiley
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9
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10
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11 class SmilifyHtml(object):
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12 """
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13 A class to "smilify" text by replacing text with HTML img tags for smiley
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14 images.
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15 """
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16 def __init__(self):
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17 self.map = Smiley.objects.get_smiley_map()
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18
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19 def convert(self, value, autoescape=False):
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20 """
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21 Converts and returns the supplied text with the HTML version of the
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22 smileys.
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23 """
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24 if not value:
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25 return u''
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26
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27 if not autoescape or isinstance(value, SafeData):
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28 esc = lambda x: x
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29 else:
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30 esc = conditional_escape
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31
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32 words = value.split()
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33 for i, word in enumerate(words):
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34 if word in self.map:
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35 words[i] = self.map[word]
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36 else:
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37 words[i] = esc(words[i])
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38 return u' '.join(words)
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39
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40
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41 class SmilifyMarkdown(object):
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42 """
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43 A class to "smilify" text by replacing text with Markdown image syntax for
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44 smiley images.
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45 """
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46 def __init__(self, relative_urls=True):
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47 self.regexes = Smiley.objects.get_smiley_regexes(
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48 relative_urls=relative_urls)
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49
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50 def convert(self, s):
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51 """
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52 Returns a string copy of the input s that has the smiley codes replaced
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53 with Markdown for smiley images.
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54 """
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55 if not s:
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56 return u''
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57
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58 for regex, repl in self.regexes:
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59 s = regex.sub(repl, s)
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60 return s
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61
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62
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63 def smilify_html(value, autoescape=False):
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64 """
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65 A convenience function to "smilify" text by replacing text with HTML
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66 img tags of smilies.
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67 """
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68 s = SmilifyHtml()
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69 return s.convert(value, autoescape=autoescape)
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