Example #1
0
def do_replace(environment, s, old, new, count=None):
    """Return a copy of the value with all occurrences of a substring
    replaced with a new one. The first argument is the substring
    that should be replaced, the second is the replacement string.
    If the optional third argument ``count`` is given, only the first
    ``count`` occurrences are replaced:

    .. sourcecode:: jinja

        {{ "Hello World"|replace("Hello", "Goodbye") }}
            -> Goodbye World

        {{ "aaaaargh"|replace("a", "d'oh, ", 2) }}
            -> d'oh, d'oh, aaargh
    """
    if count is None:
        count = -1
    if not environment.autoescape:
        return unicode(s).replace(unicode(old), unicode(new), count)
    if hasattr(old, '__html__') or hasattr(new, '__html__') and \
       not hasattr(s, '__html__'):
        s = escape(s)
    else:
        s = soft_unicode(s)
    return s.replace(soft_unicode(old), soft_unicode(new), count)
Example #2
0
def do_join(environment, value, d=u''):
    """Return a string which is the concatenation of the strings in the
    sequence. The separator between elements is an empty string per
    default, you can define it with the optional parameter:

    .. sourcecode:: jinja

        {{ [1, 2, 3]|join('|') }}
            -> 1|2|3

        {{ [1, 2, 3]|join }}
            -> 123
    """
    # no automatic escaping?  joining is a lot eaiser then
    if not environment.autoescape:
        return unicode(d).join(imap(unicode, value))

    # if the delimiter doesn't have an html representation we check
    # if any of the items has.  If yes we do a coercion to Markup
    if not hasattr(d, '__html__'):
        value = list(value)
        do_escape = False
        for idx, item in enumerate(value):
            if hasattr(item, '__html__'):
                do_escape = True
            else:
                value[idx] = unicode(item)
        if do_escape:
            d = escape(d)
        else:
            d = unicode(d)
        return d.join(value)

    # no html involved, to normal joining
    return soft_unicode(d).join(imap(soft_unicode, value))
Example #3
0
def do_format(value, *args, **kwargs):
    """
    Apply python string formatting on an object:

    .. sourcecode:: jinja

        {{ "%s - %s"|format("Hello?", "Foo!") }}
            -> Hello? - Foo!
    """
    if args and kwargs:
        raise FilterArgumentError('can\'t handle positional and keyword '
                                  'arguments at the same time')
    return soft_unicode(value) % (kwargs or args)
Example #4
0
def do_lower(s):
    """Convert a value to lowercase."""
    return soft_unicode(s).lower()
Example #5
0
def do_upper(s):
    """Convert a value to uppercase."""
    return soft_unicode(s).upper()
Example #6
0
def do_trim(value):
    """Strip leading and trailing whitespace."""
    return soft_unicode(value).strip()
Example #7
0
def do_title(s):
    """Return a titlecased version of the value. I.e. words will start with
    uppercase letters, all remaining characters are lowercase.
    """
    return soft_unicode(s).title()
Example #8
0
def do_capitalize(s):
    """Capitalize a value. The first character will be uppercase, all others
    lowercase.
    """
    return soft_unicode(s).capitalize()