]> sigrok.org Git - pulseview.git/blobdiff - pv/logging.cpp
Backport recent changes from mainline.
[pulseview.git] / pv / logging.cpp
diff --git a/pv/logging.cpp b/pv/logging.cpp
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+/*
+ * This file is part of the PulseView project.
+ *
+ * Copyright (C) 2018 Soeren Apel <soeren@apelpie.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "logging.hpp"
+#include "globalsettings.hpp"
+
+#include <iostream>
+
+#ifdef ENABLE_DECODE
+#include <libsigrokdecode/libsigrokdecode.h> /* First, so we avoid a _POSIX_C_SOURCE warning. */
+#endif
+
+#include <libsigrokcxx/libsigrokcxx.hpp>
+
+#include <QApplication>
+
+using std::cout;
+using std::endl;
+using std::lock_guard;
+
+namespace pv {
+
+Logging logging;
+
+const int Logging::MIN_BUFFER_SIZE = 10;
+const int Logging::MAX_BUFFER_SIZE = 50000;
+
+static sr_log_callback prev_sr_log_cb;
+static void *prev_sr_log_cb_data;
+
+#ifdef ENABLE_DECODE
+static srd_log_callback prev_srd_log_cb;
+static void *prev_srd_log_cb_data;
+#endif
+
+Logging::~Logging()
+{
+       qInstallMessageHandler(nullptr);
+       if (prev_sr_log_cb)
+               sr_log_callback_set(prev_sr_log_cb, prev_sr_log_cb_data);
+       prev_sr_log_cb = nullptr;
+       prev_sr_log_cb_data = nullptr;
+#ifdef ENABLE_DECODE
+       if (prev_srd_log_cb)
+               srd_log_callback_set(prev_srd_log_cb, prev_srd_log_cb_data);
+       prev_srd_log_cb = nullptr;
+       prev_srd_log_cb_data = nullptr;
+#endif
+
+       GlobalSettings::remove_change_handler(this);
+}
+
+void Logging::init()
+{
+       GlobalSettings settings;
+
+       buffer_size_ =
+               settings.value(GlobalSettings::Key_Log_BufferSize).toInt();
+
+       buffer_.reserve(buffer_size_);
+
+       qInstallMessageHandler(log_pv);
+       sr_log_callback_get(&prev_sr_log_cb, &prev_sr_log_cb_data);
+       sr_log_callback_set(log_sr, nullptr);
+#ifdef ENABLE_DECODE
+       srd_log_callback_get(&prev_srd_log_cb, &prev_srd_log_cb_data);
+       srd_log_callback_set(log_srd, nullptr);
+#endif
+
+       GlobalSettings::add_change_handler(this);
+}
+
+int Logging::get_log_level() const
+{
+       // We assume that libsigrok and libsrd always have the same log level
+       return sr_log_loglevel_get();
+}
+
+void Logging::set_log_level(int level)
+{
+       sr_log_loglevel_set(level);
+#ifdef ENABLE_DECODE
+       srd_log_loglevel_set(level);
+#endif
+}
+
+QString Logging::get_log() const
+{
+       return buffer_.join("<br />\n");
+}
+
+void Logging::log(const QString &text, int source)
+{
+       lock_guard<mutex> log_lock(log_mutex_);
+
+       if (buffer_.size() >= buffer_size_)
+               buffer_.removeFirst();
+
+       QString s;
+
+       if (text.contains("warning", Qt::CaseInsensitive)) {
+               s = QString("<font color=\"darkorange\">%1</font>").arg(text);
+               goto out;
+       }
+
+       if (text.contains("error", Qt::CaseInsensitive)) {
+               s = QString("<font color=\"darkred\">%1</font>").arg(text);
+               goto out;
+       }
+
+       switch (source) {
+       case LogSource_pv:
+               s = QString("<font color=\"darkMagenta\">pv: %1</font>").arg(text);
+               break;
+       case LogSource_sr:
+               s = QString("<font color=\"darkGreen\">sr: %1</font>").arg(text);
+               break;
+       case LogSource_srd:
+               s = QString("<font color=\"olive\">srd: %1</font>").arg(text);
+               break;
+       default:
+               s = text;
+               break;
+       }
+
+out:
+       buffer_.append(s);
+
+       // If we're tearing down the program, sending out notifications to UI
+       // elements that can no longer function properly is a bad idea
+       if (!QApplication::closingDown())
+               logged_text(s);
+}
+
+void Logging::log_pv(QtMsgType type, const QMessageLogContext &context, const QString &msg)
+{
+       (void)type;
+       (void)context;
+
+       logging.log(msg, LogSource_pv);
+
+       cout << msg.toUtf8().data() << endl;
+}
+
+int Logging::log_sr(void *cb_data, int loglevel, const char *format, va_list args)
+{
+       va_list args2;
+
+       (void)cb_data;
+
+       va_copy(args2, args);
+       if (prev_sr_log_cb)
+               prev_sr_log_cb(prev_sr_log_cb_data, loglevel, format, args2);
+       va_end(args2);
+
+       char *text = g_strdup_vprintf(format, args);
+       logging.log(QString::fromUtf8(text), LogSource_sr);
+       g_free(text);
+
+       return SR_OK;
+}
+
+#ifdef ENABLE_DECODE
+int Logging::log_srd(void *cb_data, int loglevel, const char *format, va_list args)
+{
+       va_list args2;
+
+       (void)cb_data;
+
+       va_copy(args2, args);
+       if (prev_srd_log_cb)
+               prev_srd_log_cb(prev_srd_log_cb_data, loglevel, format, args2);
+       va_end(args2);
+
+       char *text = g_strdup_vprintf(format, args);
+       logging.log(QString::fromUtf8(text), LogSource_srd);
+       g_free(text);
+
+       return SR_OK;
+}
+#endif
+
+void Logging::on_setting_changed(const QString &key, const QVariant &value)
+{
+       if (key == GlobalSettings::Key_Log_BufferSize) {
+               // Truncate buffer if needed
+               const int delta = buffer_.size() - value.toInt();
+               if (delta > 0)
+                       buffer_.erase(buffer_.begin(), buffer_.begin() + delta);
+
+               buffer_size_ = value.toInt();
+               buffer_.reserve(buffer_size_);
+       }
+}
+
+} // namespace pv