GNU Octave  6.2.0
A high-level interpreted language, primarily intended for numerical computations, mostly compatible with Matlab
news-reader.cc
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25 
26 #if defined (HAVE_CONFIG_H)
27 # include "config.h"
28 #endif
29 
30 #include <string>
31 
32 #include <QDateTime>
33 #include <QString>
34 
35 #include "news-reader.h"
36 #include "octave-qobject.h"
37 #include "gui-preferences-nr.h"
38 
39 #include "url-transfer.h"
40 #include "version.h"
41 
42 namespace octave
43 {
44  void news_reader::process (void)
45  {
46  QString html_text;
47 
48  if (m_connect_to_web)
49  {
50  // Run this part in a separate thread so Octave can continue to
51  // run while we wait for the page to load. Then emit the signal
52  // to display it when we have the page contents.
53 
54  QString url = m_base_url + '/' + m_page;
55  std::ostringstream buf;
56  url_transfer octave_dot_org (url.toStdString (), buf);
57 
58  if (octave_dot_org.is_valid ())
59  {
60  Array<std::string> param;
61  octave_dot_org.http_get (param);
62 
63  if (octave_dot_org.good ())
64  html_text = QString::fromStdString (buf.str ());
65  }
66 
67  if (html_text.contains ("this-is-the-gnu-octave-community-news-page"))
68  {
69  if (m_serial >= 0)
70  {
71  resource_manager& rmgr = m_octave_qobj.get_resource_manager ();
72  gui_settings *settings = rmgr.get_settings ();
73 
74  if (settings)
75  {
76  settings->setValue (nr_last_time.key,
77  QDateTime::currentDateTime ());
78 
79  settings->sync ();
80  }
81 
82  QString tag ("community-news-page-serial=");
83 
84  int b = html_text.indexOf (tag);
85 
86  if (b)
87  {
88  b += tag.length ();
89 
90  int e = html_text.indexOf ("\n", b);
91 
92  QString tmp = html_text.mid (b, e-b);
93 
94  int curr_page_serial = tmp.toInt ();
95 
96  if (curr_page_serial > m_serial)
97  {
98  if (settings)
99  {
100  settings->setValue (nr_last_news.key,
101  curr_page_serial);
102 
103  settings->sync ();
104  }
105  }
106  else
107  return;
108  }
109  else
110  return;
111  }
112  }
113  else
114  html_text = QString
115  (tr ("<html>\n"
116  "<body>\n"
117  "<p>\n"
118  "Octave's community news source seems to be unavailable.\n"
119  "</p>\n"
120  "<p>\n"
121  "For the latest news, please check\n"
122  "<a href=\"https://octave.org/community-news.html\">https://octave.org/community-news.html</a>\n"
123  "when you have a connection to the web (link opens in an external browser).\n"
124  "</p>\n"
125  "<p>\n"
126  "<small><em>&mdash; The Octave Developers, ") + OCTAVE_RELEASE_DATE + "</em></small>\n"
127  "</p>\n"
128  "</body>\n"
129  "</html>\n");
130  }
131  else
132  html_text = QString
133  (tr ("<html>\n"
134  "<body>\n"
135  "<p>\n"
136  "Connecting to the web to display the latest Octave Community news has been disabled.\n"
137  "</p>\n"
138  "<p>\n"
139  "For the latest news, please check\n"
140  "<a href=\"https://octave.org/community-news.html\">https://octave.org/community-news.html</a>\n"
141  "when you have a connection to the web (link opens in an external browser)\n"
142  "or enable web connections for news in Octave's network settings dialog.\n"
143  "</p>\n"
144  "<p>\n"
145  "<small><em>&mdash; The Octave Developers, ") + OCTAVE_RELEASE_DATE + "</em></small>\n"
146  "</p>\n"
147  "</body>\n"
148  "</html>\n");
149 
150  emit display_news_signal (html_text);
151 
152  emit finished ();
153  }
154 }
octave::base_qobject::get_resource_manager
resource_manager & get_resource_manager(void)
Definition: octave-qobject.h:101
octave::gui_settings
Definition: gui-settings.h:36
octave::news_reader::m_connect_to_web
bool m_connect_to_web
Definition: news-reader.h:66
octave::news_reader::m_serial
int m_serial
Definition: news-reader.h:65
octave::news_reader::display_news_signal
void display_news_signal(const QString &news)
octave::news_reader::process
void process(void)
Definition: news-reader.cc:44
octave::news_reader::m_octave_qobj
base_qobject & m_octave_qobj
Definition: news-reader.h:61
octave::news_reader::m_page
QString m_page
Definition: news-reader.h:64
octave::news_reader::finished
void finished(void)
octave::news_reader::m_base_url
QString m_base_url
Definition: news-reader.h:63
octave::resource_manager
Definition: resource-manager.h:40
octave::resource_manager::get_settings
gui_settings * get_settings(void) const
Definition: resource-manager.cc:199
octave::url_transfer
Definition: url-transfer.h:180
octave::url_transfer::good
bool good(void) const
Definition: url-transfer.h:198
octave::url_transfer::http_get
void http_get(const Array< std::string > &param)
Definition: url-transfer.h:267
octave::url_transfer::is_valid
bool is_valid(void) const
Definition: url-transfer.h:196
nr_last_news
const gui_pref nr_last_news("news/last_news_item", QVariant(0))
nr_last_time
const gui_pref nr_last_time("news/last_time_checked", QVariant(QDateTime()))
QtHandles::Utils::fromStdString
QString fromStdString(const std::string &s)
Definition: QtHandlesUtils.cc:54
gui_pref::key
const QString key
Definition: gui-preferences.h:52
OCTAVE_RELEASE_DATE
#define OCTAVE_RELEASE_DATE
Definition: version.in.h:51