bgneal@124: """
bgneal@211: Smiley classes and functions.
bgneal@613: 
bgneal@124: """
bgneal@124: from django.utils.safestring import SafeData
bgneal@124: from django.utils.html import conditional_escape
bgneal@124: 
bgneal@925: from models import Smiley
bgneal@124: 
bgneal@124: 
bgneal@211: class SmilifyHtml(object):
bgneal@124:     """
bgneal@211:     A class to "smilify" text by replacing text with HTML img tags for smiley
bgneal@211:     images.
bgneal@124:     """
bgneal@124:     def __init__(self):
bgneal@124:         self.map = Smiley.objects.get_smiley_map()
bgneal@124: 
bgneal@211:     def convert(self, value, autoescape=False):
bgneal@128:         """
bgneal@211:         Converts and returns the supplied text with the HTML version of the
bgneal@211:         smileys.
bgneal@128:         """
bgneal@286:         if not value:
bgneal@286:             return u''
bgneal@286: 
bgneal@124:         if not autoescape or isinstance(value, SafeData):
bgneal@124:             esc = lambda x: x
bgneal@124:         else:
bgneal@124:             esc = conditional_escape
bgneal@124: 
bgneal@124:         words = value.split()
bgneal@124:         for i, word in enumerate(words):
bgneal@124:             if word in self.map:
bgneal@211:                 words[i] = self.map[word]
bgneal@124:             else:
bgneal@124:                 words[i] = esc(words[i])
bgneal@124:         return u' '.join(words)
bgneal@128: 
bgneal@211: 
bgneal@211: class SmilifyMarkdown(object):
bgneal@211:     """
bgneal@211:     A class to "smilify" text by replacing text with Markdown image syntax for
bgneal@211:     smiley images.
bgneal@211:     """
bgneal@792:     def __init__(self, relative_urls=True):
bgneal@792:         self.regexes = Smiley.objects.get_smiley_regexes(
bgneal@792:                                         relative_urls=relative_urls)
bgneal@211: 
bgneal@211:     def convert(self, s):
bgneal@128:         """
bgneal@211:         Returns a string copy of the input s that has the smiley codes replaced
bgneal@211:         with Markdown for smiley images.
bgneal@128:         """
bgneal@286:         if not s:
bgneal@286:             return u''
bgneal@286: 
bgneal@211:         for regex, repl in self.regexes:
bgneal@211:             s = regex.sub(repl, s)
bgneal@211:         return s
bgneal@128: 
bgneal@124: 
bgneal@128: def smilify_html(value, autoescape=False):
bgneal@124:     """
bgneal@124:     A convenience function to "smilify" text by replacing text with HTML
bgneal@124:     img tags of smilies.
bgneal@124:     """
bgneal@211:     s = SmilifyHtml()
bgneal@211:     return s.convert(value, autoescape=autoescape)