from pygments.formatters import HtmlFormatter

from pygments.lexers import guess_lexer

from pygments.lexers import get_lexer_by_name

#Custom helper here :)

class _Link(object):

    '''

    Make a url based on label and url with help of url_for

    @param label:name of link    if not defined url is used

    @param url: the url for link

    '''

    def __call__(self, label='', *url_, **urlargs):

        if label is None or '':

            label = url

        link_fn = link_to(label, url(*url_, **urlargs))

        return link_fn

class _GetError(object):

    def __call__(self, field_name, form_errors):

        tmpl = """<span class="error_msg">%s</span>"""

        if form_errors and form_errors.has_key(field_name):

            return literal(tmpl % form_errors.get(field_name))

class _FileSizeFormat(object):

    """

    Formats the value like a 'human-readable' file size (i.e. 13 KB, 4.1 MB,

    102 bytes, etc).

    """

    def __call__(self, bytes):

        try:

            bytes = float(bytes)

        except TypeError:

            return u"0 bytes"

        if bytes < 1024:

            return ungettext("%(size)d byte", "%(size)d bytes", bytes) % {'size': bytes}

        if bytes < 1024 * 1024:

            return _("%.1f KB") % (bytes / 1024)

        if bytes < 1024 * 1024 * 1024:

            return _("%.1f MB") % (bytes / (1024 * 1024))

        return _("%.1f GB") % (bytes / (1024 * 1024 * 1024))

class _FilesBreadCrumbs(object):

    def __call__(self, repo_name, rev, paths):

        paths_l = paths.split('/')

        for cnt, p in enumerate(paths_l, 1):

            if p != '':

        return literal(' / '.join(url_l))

def pygmentize(code, **kwargs):

    '''

    Filter for chunks of html to replace code tags with pygmented code

    '''

    return literal(highlight(code, guess_lexer(code), HtmlFormatter(**kwargs)))

files_breadcrumbs = _FilesBreadCrumbs()

filesizeformat = _FileSizeFormat()

link = _Link()

flash = _Flash()

get_error = _GetError()