| 1 | #escape_markdown.py
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| 2 |
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| 3 | from django.template import Library
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| 4 |
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| 5 | register = Library()
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| 6 |
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| 7 | def escape_without_markdown_syntax(text):
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| 8 | """ This function escapes '<', '>', '&' into text in HTML-entities
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| 9 | For example:
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| 10 | > > I said, give me <more> M&M's
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| 11 | > Nobody gives you more M&M's!
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| 12 | You are fucking greedy!
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| 13 |
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| 14 | Translates into
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| 15 | > > I said, give me >more< M&M's
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| 16 | > Nobody gives you more M&M's!
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| 17 | ___You are fucking greedy!___
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| 18 |
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| 19 | After that, Markdown filter can translate it into
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| 20 | <blockquote>
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| 21 | <blockquote> I said, give me >more< M&M's</blockquote>
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| 22 | <blockqoute> Nobody gives you more M&M's!</blockquote>
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| 23 | <strong>You are fucking greedy!</strong>
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| 24 |
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| 25 | For correctly using this filter write "|escape_markdown" before using Markdown filter
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| 26 | filters:
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| 27 | And now we present you a Markdown: <fieldset>{{ text|escape_markdown|markdown }}</fieldset>
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| 28 |
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| 29 | Also it fixes Markdown error with backslash '\'
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| 30 |
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| 31 | """
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| 32 | lines = []
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| 33 | for s in text.split('\n'):
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| 34 | i = 0
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| 35 | while i < len(s) and (s[i] == ' ' or s[i] == '>') :
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| 36 | i+=1
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| 37 | str1 = s[0:i]
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| 38 | str2 = s[i:]
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| 39 | str2 = str2.replace('&','&')
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| 40 | str2 = str2.replace('>','>')
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| 41 | str2 = str2.replace('<','<')
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| 42 | str2 = str2.replace('\\','\')
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| 43 | lines.append(str1 + str2)
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| 44 | return '\n'.join(lines)
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| 45 |
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| 46 | register.filter('mrakdown', escape_without_markdown_syntax) # Смешная версия названия фильтра :)
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| 47 | # It's fun version of filter name
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| 48 | # for russians users
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| 49 |
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| 50 | register.filter('escape_markdown', escape_without_markdown_syntax)
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| 51 |
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| 52 |
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| 53 | def delete_markdown_quoted_text(text):
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| 54 | lines = []
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| 55 | for s in text.split('\n'):
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| 56 | if len(s) == 0:
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| 57 | lines.append('')
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| 58 | continue
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| 59 | i = 0
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| 60 | while i < len(s) and s[i] == ' ':
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| 61 | i+=1
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| 62 | if s[i] == '>':
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| 63 | continue
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| 64 | else:
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| 65 | lines.append(s)
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| 66 | return '\n'.join(lines)
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| 67 |
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| 68 | register.filter('delete_markdown_blockquotes', delete_markdown_quoted_text)
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