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annotate libgui/src/news-reader.cc @ 31649:deb553ac2c54

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maint: Merge stable to default.
author John W. Eaton <jwe@octave.org>
date Tue, 06 Dec 2022 15:45:27 -0500
parents 431f80aba37a 29d734430e5f
children aae24eaf89ad
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 2011-2022 The Octave Project Developers
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4 //
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5 // See the file COPYRIGHT.md in the top-level directory of this
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6 // distribution or <https://octave.org/copyright/>.
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7 //
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8 // This file is part of Octave.
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9 //
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10 // Octave is free software: you can redistribute it and/or modify it
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11 // under the terms of the GNU General Public License as published by
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12 // the Free Software Foundation, either version 3 of the License, or
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13 // (at your option) any later version.
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14 //
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15 // Octave is distributed in the hope that it will be useful, but
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16 // WITHOUT ANY WARRANTY; without even the implied warranty of
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17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 // GNU General Public License for more details.
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19 //
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20 // You should have received a copy of the GNU General Public License
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21 // along with Octave; see the file COPYING. If not, see
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22 // <https://www.gnu.org/licenses/>.
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23 //
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24 ////////////////////////////////////////////////////////////////////////
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25
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26 #if defined (HAVE_CONFIG_H)
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27 # include "config.h"
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28 #endif
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29
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30 #include <string>
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31
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32 #include <QDateTime>
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33 #include <QString>
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34
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35 #include "news-reader.h"
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36 #include "gui-preferences-nr.h"
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37 #include "gui-settings.h"
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38
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39 #include "url-transfer.h"
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40 #include "version.h"
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41
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42 OCTAVE_BEGIN_NAMESPACE(octave)
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43
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44 void news_reader::process (void)
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45 {
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46 QString html_text;
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47
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48 if (m_connect_to_web)
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49 {
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50 // Run this part in a separate thread so Octave can continue to
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51 // run while we wait for the page to load. Then emit the signal
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52 // to display it when we have the page contents.
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53
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54 QString url = m_base_url + '/' + m_page;
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55 std::ostringstream buf;
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56 url_transfer octave_dot_org (url.toStdString (), buf);
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57
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58 if (octave_dot_org.is_valid ())
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59 {
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60 Array<std::string> param;
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61 octave_dot_org.http_get (param);
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62
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63 if (octave_dot_org.good ())
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64 html_text = QString::fromStdString (buf.str ());
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65 }
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66
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67 if (html_text.contains ("this-is-the-gnu-octave-community-news-page"))
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68 {
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69 if (m_serial >= 0)
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70 {
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71 gui_settings settings;
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72
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73 settings.setValue (nr_last_time.key,
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74 QDateTime::currentDateTime ());
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75
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76 settings.sync ();
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77
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78 QString tag ("community-news-page-serial=");
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79
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80 int b = html_text.indexOf (tag);
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81
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82 if (b)
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83 {
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84 b += tag.length ();
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85
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86 int e = html_text.indexOf ("\n", b);
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87
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88 QString tmp = html_text.mid (b, e-b);
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89
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90 int curr_page_serial = tmp.toInt ();
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91
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92 if (curr_page_serial > m_serial)
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93 {
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94 settings.setValue (nr_last_news.key, curr_page_serial);
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95 settings.sync ();
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96 }
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97 else
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98 return;
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99 }
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100 else
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101 return;
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102 }
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103 }
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104 else
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105 html_text = QString
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106 (tr ("<html>\n"
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107 "<body>\n"
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108 "<p>\n"
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109 "Octave's community news source seems to be unavailable.\n"
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110 "</p>\n"
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111 "<p>\n"
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112 "For the latest news, please check\n"
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113 "<a href=\"https://octave.org/community-news.html\">https://octave.org/community-news.html</a>\n"
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114 "when you have a connection to the web (link opens in an external browser).\n"
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115 "</p>\n"
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116 "<p>\n"
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117 "<small><em>&mdash; The Octave Developers, ") + OCTAVE_RELEASE_DATE + "</em></small>\n"
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118 "</p>\n"
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119 "</body>\n"
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120 "</html>\n");
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121 }
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122 else
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123 html_text = QString
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124 (tr ("<html>\n"
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125 "<body>\n"
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126 "<p>\n"
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127 "Connecting to the web to display the latest Octave Community news has been disabled.\n"
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128 "</p>\n"
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129 "<p>\n"
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130 "For the latest news, please check\n"
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131 "<a href=\"https://octave.org/community-news.html\">https://octave.org/community-news.html</a>\n"
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132 "when you have a connection to the web (link opens in an external browser)\n"
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133 "or enable web connections for news in Octave's network settings dialog.\n"
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134 "</p>\n"
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135 "<p>\n"
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136 "<small><em>&mdash; The Octave Developers, ") + OCTAVE_RELEASE_DATE + "</em></small>\n"
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137 "</p>\n"
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138 "</body>\n"
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139 "</html>\n");
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140
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141 emit display_news_signal (html_text);
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142
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143 emit finished ();
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144 }
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145
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146 OCTAVE_END_NAMESPACE(octave)