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langfilter, initial commit

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This addon is based on the NSFW filter but collapses postings based on the
detected language instead of a list of words.

rel friendica#1778
This commit is contained in:
Tobias Diekershoff 2015-07-24 19:02:42 +02:00
parent 4876d31209
commit e47f3c5215
5 changed files with 245 additions and 0 deletions
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Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

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Language Filter
===============
This addon allows users to define a list of languages in which postings shall
be displayed. Postings in other languages will be collapsed, so the user can
still read them if desired. When no language could be detected (this usually
happens with short postings) the posting will be shown.
It is based on the NSFW addon and filters the postings based on the language
detected by Text_LanguageDetect package that is bundled with friendica.
Please note, the language detection is not perfect. You should not trust it
blindly and we will not be responsible for postings you don't see because
they got wrongly hidden by this addon.
Author
======
* Tobias Diekershoff
License
=======
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

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# ADDON langfilter
# Copyright (C)
# This file is distributed under the same license as the Friendica langfilter addon package.
#
#
#, fuzzy
msgid ""
msgstr ""
"Project-Id-Version: \n"
"Report-Msgid-Bugs-To: \n"
"POT-Creation-Date: 2015-07-24 19:01+0200\n"
"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
"Language-Team: LANGUAGE <LL@li.org>\n"
"Language: \n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"
#: langfilter.php:43
msgid "Language Filter"
msgstr ""
#: langfilter.php:44
msgid ""
"This addon tries to identify the language of a postings. If it does not "
"match any language spoken by you (see below) the posting will be collapsed. "
"Remember detecting the language is not perfect, especially with short "
"postings."
msgstr ""
#: langfilter.php:45
msgid "Use the language filter"
msgstr ""
#: langfilter.php:46
msgid "Use /expression/ to provide regular expressions"
msgstr ""
#: langfilter.php:47
msgid "I speak"
msgstr ""
#: langfilter.php:47
msgid ""
"List of abbreviations for languages you speak, comma seperated. For excample "
"\"de,it\"."
msgstr ""
#: langfilter.php:48
msgid "Save Settings"
msgstr ""
#: langfilter.php:67
msgid "Language Filter Settings saved."
msgstr ""
#: langfilter.php:106
#, php-format
msgid "unspoken language %s - Click to open/close"
msgstr ""

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<?php
/*
* Name: Language Filter
* Version: 0.1
* Description: Filters out postings in languages not spoken by the users
* Author: Tobias Diekershoff <https://f.diekershoff.de/u/tobias>
* License: MIT
*/
require_once('library/langdet/Text/LanguageDetect.php');
/* Define the hooks we want to use
* that is, we have settings, we need to save the settings and we want
* to modify the content of a posting when friendica prepares it.
*/
function langfilter_install() {
register_hook('prepare_body', 'addon/langfilter/langfilter.php', 'langfilter_prepare_body', 10);
register_hook('plugin_settings', 'addon/langfilter/langfilter.php', 'langfilter_addon_settings');
register_hook('plugin_settings_post', 'addon/langfilter/langfilter.php', 'langfilter_addon_settings_post');
}
function langfilter_uninstall() {
unregister_hook('prepare_body', 'addon/langfilter/langfilter.php', 'langfilter_prepare_body');
unregister_hook('plugin_settings', 'addon/langfilter/langfilter.php', 'langfilter_addon_settings');
unregister_hook('plugin_settings_post', 'addon/langfilter/langfilter.php', 'langfilter_addon_settings_post');
}
/* The settings
* 1st check if somebody logged in is calling
* 2nd get the current settings
* 3rd parse a SMARTY3 template, replacing some translateable strings for the form
*/
function langfilter_addon_settings(&$a,&$s) {
if(! local_user())
return;
$enable_checked = (intval(get_pconfig(local_user(),'langfilter','disable')) ? '' : ' checked="checked" ');
$languages = get_pconfig(local_user(),'langfilter','languages');
if(! $languages)
$languages = 'en,de,fr,it,es';
$t = get_markup_template("settings.tpl", "addon/langfilter/" );
$s .= replace_macros ($t, array(
'$title' => t("Language Filter"),
'$intro' => t ('This addon tries to identify the language of a postings. If it does not match any language spoken by you (see below) the posting will be collapsed. Remember detecting the language is not perfect, especially with short postings.'),
'$enabled' => array('langfilter_enable', t('Use the language filter'), $enable_checked, ''),
'$regex' => t('Use /expression/ to provide regular expressions'),
'$languages' => array('langfilter_languages', t('I speak'), $languages, t('List of abbreviations for languages you speak, comma seperated. For excample "de,it".') ),
'$submit' => t('Save Settings'),
));
return;
}
/* Save the settings
* 1st check it's a logged in user calling
* 2nd check the langfilter form is to be saved
* 3rd save the settings to the DB for later usage
*/
function langfilter_addon_settings_post(&$a,&$b) {
if(! local_user())
return;
if($_POST['langfilter-settings-submit']) {
set_pconfig(local_user(),'langfilter','languages',trim($_POST['langfilter_languages']));
$enable = ((x($_POST,'langfilter_enable')) ? intval($_POST['langfilter_enable']) : 0);
$disable = 1-$enable;
set_pconfig(local_user(),'langfilter','disable', $disable);
info( t('Language Filter Settings saved.') . EOL);
}
}
/* Actually filter postings by their language
* 1st check if the user wants to filter postings
* 2nd get the user settings which languages shall be not filtered out
* 3rd determine the language of a posting
* 4th if the determined language does not fit to the spoken languages
* of the user, then collapse the posting, but provide a link to
* expand it again.
*/
function langfilter_prepare_body(&$a,&$b) {
if(get_pconfig(local_user(),'langfilter','disable'))
return;
if(local_user()) {
$langs = get_pconfig(local_user(),'langfilter','languages');
}
if($langs) {
$arr = explode(',',$langs);
} else {
return;
}
$found = false;
$l = new Text_LanguageDetect;
$l->_name_mode = 2; // two letter codes
$l->_threshold = 600; // make it a bit harder to be confident with a lng
// IOW make it more possible that lng is correct
$lng = $l->detectSimple($b['html']);
if ($lng==null)
return;
if (! in_array($lng, $arr))
$found = true;
if ($lng==null)
$found = false;
if($found) {
$rnd = random_string(8);
$b['html'] = '<div id="langfilter-wrap-' . $rnd . '" class="fakelink" onclick=openClose(\'langfilter-' . $rnd . '\'); >' . sprintf( t('unspoken language %s - Click to open/close'),$lng ) . '</div><div id="langfilter-' . $rnd . '" style="display: none; " >' . $b['html'] . '</div>';
}
}
?>

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<span id="settings_langfilter_inflated" class="settings-block fakelink" style="display: block;" onclick="openClose('settings_langfilter_expanded'); openClose('settings_langfilter_inflated');">
<h3>{{$title}}</h3>
</span>
<div id="settings_langfilter_expanded" class="settings-block" style="display: none;">
<span class="fakelink" onclick="openClose('settings_langfilter_expanded'); openClose('settings_langfilter_inflated');">
<h3>{{$title}}</h3>
</span>
<div id="langfilter-wrapper">
<p>{{$intro}}</p>
<p>{{$regex}}</p>
{{include file="field_checkbox.tpl" field=$enabled}}
{{include file="field_input.tpl" field=$languages}}
</div>
<div class="settings-submit-wrapper" >
<input type="submit" id="langfilter-settings-submit" name="langfilter-settings-submit" class="settings-submit" value="{{$submit}}" />
</div>
</div>