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annotate src/browser/sat_browser/strings.py @ 1096:01538d8a77be

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author Goffi <goffi@goffi.org>
date Fri, 01 Jun 2018 13:04:57 +0200
parents 2aaac0605ae2
children
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1 #!/usr/bin/python
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2 # -*- coding: utf-8 -*-
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3
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4 # SAT helpers methods for plugins
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5 # Copyright (C) 2013-2016 Adrien Cossa (souliane@mailoo.org)
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6
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU Affero General Public License as published by
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9 # the Free Software Foundation, either version 3 of the License, or
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10 # (at your option) any later version.
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11
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12 # This program is distributed in the hope that it will be useful,
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 # GNU Affero General Public License for more details.
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16
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17 # You should have received a copy of the GNU Affero General Public License
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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19
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20 from __pyjamas__ import JS
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21
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22
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23 def getURLParams(url):
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24 """This comes from pyjamas.Location.makeUrlDict with a small change
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25 to also parse full URLs, and parameters with no value specified
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26 (in that case the default value "" is used).
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27 @param url: any URL with or without parameters
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28 @return: a dictionary of the parameters, if any was given, or {}
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29 """
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30 dict_ = {}
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31 if "/" in url:
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32 # keep the part after the last "/"
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33 url = url[url.rindex("/") + 1:]
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34 if url.startswith("?"):
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35 # remove the first "?"
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36 url = url[1:]
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37 pairs = url.split("&")
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38 for pair in pairs:
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39 if len(pair) < 3:
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40 continue
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41 kv = pair.split("=", 1)
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42 dict_[kv[0]] = kv[1] if len(kv) > 1 else ""
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43 return dict_
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44
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45
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46 def addURLToText(text, new_target=True):
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47 """Check a text for what looks like an URL and make it clickable.
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48
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49 @param string (unicode): text to process
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50 @param new_target (bool): if True, make the link open in a new window
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51 """
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52 # FIXME: Workaround for a pyjamas bug with regex, base method in sat.frontends.tools.strings
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53 # In some case, Pyjamas' re module get crazy and freeze browsers (tested with Iceweasel and Chromium).
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54 # we use javascript as a workaround
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55 # This method is inspired from https://stackoverflow.com/questions/1500260/detect-urls-in-text-with-javascript
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56 JS("""var urlRegex = /(https?:\/\/[^\s]+)/g;
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57 var target = new_target ? ' target="_blank"' : '';
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58 return text.replace(urlRegex, function(url) {
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59 return '<a href="' + url + '"' + target + ' class="url">' + url + '</a>';
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60 })""")
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61
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62
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63 def addURLToImage(text):
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64 """Check a XHTML text for what looks like an imageURL and make it clickable.
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65
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66 @param text (unicode): text to process
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67 """
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68 # FIXME: Pyjamas re module is not stable so we use pure JS instead, base method in sat.frontends.tools.strings
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69 JS("""var imgRegex = /<img[^>]* src="([^"]+)"[^>]*>/g;
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70 return text.replace(imgRegex, function(img, src) {
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71 return '<a href="' + src + '" target="_blank">' + img + '</a>';
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72 })""")
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73
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74 def fixXHTMLLinks(xhtml):
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75 """Add http:// if the scheme is missing and force opening in a new window.
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76
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77 @param string (unicode): XHTML Content
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78 """
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79 # FIXME: Pyjamas re module is not stable so we use pure JS instead, base method in sat.frontends.tools.strings
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80 JS("""var subs = [];
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81 var tag_re = /<a(?: \w+="[^"]*")* ?\/?>/g;
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82 var result;
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83 while ((result = tag_re.exec(xhtml)) !== null) {
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84 tag = result[0];
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85 var link_result = /href="([^"]*)"/.exec(tag);
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86 if (link_result && !(link_result[1].startsWith("#"))) { // found a link which is not an internal anchor
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87 var link = link_result[0];
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88 var url = link_result[1];
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89 if (! /target="([^"]*)"/.test(tag)) { // no target
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90 subs.push([tag, '<a target="_blank"' + tag.slice(2, tag.length)]);
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91 }
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92 if (! /^\w+:\/\//.test(url)) { // no scheme
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93 subs.push([link, 'href="http://' + url + '"']);
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94 }
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95 }
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96 }
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97 for (i in subs) {
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98 xhtml = xhtml.replace(subs[i][0], subs[i][1]);
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99 }
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100 """)
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101 return xhtml