view frontends/src/tools/strings.py @ 1955:633b5c21aefd

backend, frontend: messages refactoring (huge commit, not finished): /!\ database schema has been modified, do a backup before updating message have been refactored, here are the main changes: - languages are now handled - all messages have an uid (internal to SàT) - message updating is anticipated - subject is now first class - new naming scheme is used newMessage => messageNew, getHistory => historyGet, sendMessage => messageSend - minimal compatibility refactoring in quick_frontend/Primitivus, better refactoring should follow - threads handling - delayed messages are saved into history - info messages may also be saved in history (e.g. to keep track of people joining/leaving a room) - duplicate messages should be avoided - historyGet return messages in right order, no need to sort again - plugins have been updated to follow new features, some of them need to be reworked (e.g. OTR) - XEP-0203 (Delayed Delivery) is now fully handled in core, the plugin just handle disco and creation of a delay element - /!\ jp and Libervia are currently broken, as some features of Primitivus It has been put in one huge commit to avoid breaking messaging between changes. This is the main part of message refactoring, other commits will follow to take profit of the new features/behaviour.
author Goffi <goffi@goffi.org>
date Tue, 24 May 2016 22:11:04 +0200
parents 1128feb54180
children 2c31ddf633e5
line wrap: on
line source

#!/usr/bin/env python2
# -*- coding: utf-8 -*-

# SAT helpers methods for plugins
# Copyright (C) 2013-2016 Adrien Cossa (souliane@mailoo.org)

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.

# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

import re


def getURLParams(url):
    """This comes from pyjamas.Location.makeUrlDict with a small change
    to also parse full URLs, and parameters with no value specified
    (in that case the default value "" is used).
    @param url: any URL with or without parameters
    @return: a dictionary of the parameters, if any was given, or {}
    """
    dict_ = {}
    if "/" in url:
        # keep the part after the last "/"
        url = url[url.rindex("/") + 1:]
    if url.startswith("?"):
        # remove the first "?"
        url = url[1:]
    pairs = url.split("&")
    for pair in pairs:
        if len(pair) < 3:
            continue
        kv = pair.split("=", 1)
        dict_[kv[0]] = kv[1] if len(kv) > 1 else ""
    return dict_


def addURLToText(string, new_target=True):
    """Check a text for what looks like an URL and make it clickable.

    @param string (unicode): text to process
    @param new_target (bool): if True, make the link open in a new window
    """
    # XXX: report any change to libervia.browser.strings.addURLToText
    # Regexp from http://daringfireball.net/2010/07/improved_regex_for_matching_urls
    def repl(match):
        url = match.group(0)
        if not re.match(r"""[a-z]{3,}://|mailto:|xmpp:""", url):
            url = "http://" + url
        target = ' target="_blank"' if new_target else ''
        return '<a href="%s"%s class="url">%s</a>' % (url, target, match.group(0))
    pattern = r"""(?i)\b((?:[a-z]{3,}://|(www|ftp)\d{0,3}[.]|[a-z0-9.\-]+[.][a-z]{2,4}/|mailto:|xmpp:)(?:[^\s()<>]+|\(([^\s()<>]+|(\([^\s()<>]+\)))*\))+(?:\(([^\s()<>]+|(\([^\s()<>]+\)))*\)|[^\s`!()\[\]{};:'".,<>?]))"""
    return re.sub(pattern, repl, string)


def addURLToImage(string):
    """Check a XHTML text for what looks like an imageURL and make it clickable.

    @param string (unicode): text to process
    """
    # XXX: report any change to libervia.browser.strings.addURLToImage
    def repl(match):
        url = match.group(1)
        return '<a href="%s" target="_blank">%s</a>' % (url, match.group(0))
    pattern = r"""<img[^>]* src="([^"]+)"[^>]*>"""
    return re.sub(pattern, repl, string)


def fixXHTMLLinks(xhtml):
    """Add http:// if the scheme is missing and force opening in a new window.

    @param string (unicode): XHTML Content
    """
    subs = []
    for match in re.finditer(r'<a( \w+="[^"]*")* ?/?>', xhtml):
        tag = match.group(0)
        url = re.search(r'href="([^"]*)"', tag)
        if url and not url.group(1).startswith("#"):  # skip internal anchor
            if not re.search(r'target="([^"]*)"', tag):  # no target
                subs.append((tag, '<a target="_blank"%s' % tag[2:]))
            if not re.match(r"^\w+://", url.group(1)):  # no scheme
                subs.append((url.group(0), 'href="http://%s"' % url.group(1)))

    for url, new_url in subs:
        xhtml = xhtml.replace(url, new_url)
    return xhtml