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1 | /* | |
2 | * This file is part of the PulseView project. | |
3 | * | |
4 | * Copyright (C) 2018 Soeren Apel <soeren@apelpie.net> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #include "logging.hpp" | |
21 | #include "globalsettings.hpp" | |
22 | ||
23 | #ifdef ENABLE_DECODE | |
24 | #include <libsigrokdecode/libsigrokdecode.h> /* First, so we avoid a _POSIX_C_SOURCE warning. */ | |
25 | #endif | |
26 | ||
27 | #include <libsigrokcxx/libsigrokcxx.hpp> | |
28 | ||
29 | #include <QApplication> | |
30 | ||
31 | using std::lock_guard; | |
32 | ||
33 | namespace pv { | |
34 | ||
35 | Logging logging; | |
36 | ||
37 | const int Logging::MIN_BUFFER_SIZE = 10; | |
38 | const int Logging::MAX_BUFFER_SIZE = 50000; | |
39 | ||
40 | static sr_log_callback prev_sr_log_cb; | |
41 | static void *prev_sr_log_cb_data; | |
42 | ||
43 | #ifdef ENABLE_DECODE | |
44 | static srd_log_callback prev_srd_log_cb; | |
45 | static void *prev_srd_log_cb_data; | |
46 | #endif | |
47 | ||
48 | Logging::~Logging() | |
49 | { | |
50 | qInstallMessageHandler(nullptr); | |
51 | sr_log_callback_set(prev_sr_log_cb, prev_sr_log_cb_data); | |
52 | prev_sr_log_cb = NULL; | |
53 | prev_sr_log_cb_data = NULL; | |
54 | #ifdef ENABLE_DECODE | |
55 | srd_log_callback_set(prev_srd_log_cb, prev_srd_log_cb_data); | |
56 | prev_srd_log_cb = NULL; | |
57 | prev_srd_log_cb_data = NULL; | |
58 | #endif | |
59 | ||
60 | GlobalSettings::remove_change_handler(this); | |
61 | } | |
62 | ||
63 | void Logging::init() | |
64 | { | |
65 | GlobalSettings settings; | |
66 | ||
67 | buffer_size_ = | |
68 | settings.value(GlobalSettings::Key_Log_BufferSize).toInt(); | |
69 | ||
70 | buffer_.reserve(buffer_size_); | |
71 | ||
72 | qInstallMessageHandler(log_pv); | |
73 | sr_log_callback_get(&prev_sr_log_cb, &prev_sr_log_cb_data); | |
74 | sr_log_callback_set(log_sr, nullptr); | |
75 | #ifdef ENABLE_DECODE | |
76 | srd_log_callback_get(&prev_srd_log_cb, &prev_srd_log_cb_data); | |
77 | srd_log_callback_set(log_srd, nullptr); | |
78 | #endif | |
79 | ||
80 | GlobalSettings::add_change_handler(this); | |
81 | } | |
82 | ||
83 | int Logging::get_log_level() const | |
84 | { | |
85 | // We assume that libsigrok and libsrd always have the same log level | |
86 | return sr_log_loglevel_get(); | |
87 | } | |
88 | ||
89 | void Logging::set_log_level(int level) | |
90 | { | |
91 | sr_log_loglevel_set(level); | |
92 | #ifdef ENABLE_DECODE | |
93 | srd_log_loglevel_set(level); | |
94 | #endif | |
95 | } | |
96 | ||
97 | QString Logging::get_log() const | |
98 | { | |
99 | return buffer_.join("<br />\n"); | |
100 | } | |
101 | ||
102 | void Logging::log(const QString &text, int source) | |
103 | { | |
104 | lock_guard<mutex> log_lock(log_mutex_); | |
105 | ||
106 | if (buffer_.size() >= buffer_size_) | |
107 | buffer_.removeFirst(); | |
108 | ||
109 | QString s; | |
110 | ||
111 | if (text.contains("warning", Qt::CaseInsensitive)) { | |
112 | s = QString("<font color=\"darkorange\">%1</font>").arg(text); | |
113 | goto out; | |
114 | } | |
115 | ||
116 | if (text.contains("error", Qt::CaseInsensitive)) { | |
117 | s = QString("<font color=\"darkred\">%1</font>").arg(text); | |
118 | goto out; | |
119 | } | |
120 | ||
121 | switch (source) { | |
122 | case LogSource_pv: | |
123 | s = QString("pv: ") + text; // black is default color | |
124 | break; | |
125 | case LogSource_sr: | |
126 | s = QString("<font color=\"blue\">sr: %1</font>").arg(text); | |
127 | break; | |
128 | case LogSource_srd: | |
129 | s = QString("<font color=\"olive\">srd: %1</font>").arg(text); | |
130 | break; | |
131 | default: | |
132 | s = text; | |
133 | break; | |
134 | } | |
135 | ||
136 | out: | |
137 | buffer_.append(s); | |
138 | ||
139 | // If we're tearing down the program, sending out notifications to UI | |
140 | // elements that can no longer function properly is a bad idea | |
141 | if (!QApplication::closingDown()) | |
142 | logged_text(s); | |
143 | } | |
144 | ||
145 | void Logging::log_pv(QtMsgType type, const QMessageLogContext &context, const QString &msg) | |
146 | { | |
147 | (void)type; | |
148 | (void)context; | |
149 | ||
150 | logging.log(msg, LogSource_pv); | |
151 | } | |
152 | ||
153 | int Logging::log_sr(void *cb_data, int loglevel, const char *format, va_list args) | |
154 | { | |
155 | va_list args2; | |
156 | ||
157 | (void)cb_data; | |
158 | ||
159 | va_copy(args2, args); | |
160 | if (prev_sr_log_cb) | |
161 | prev_sr_log_cb(prev_sr_log_cb_data, loglevel, format, args2); | |
162 | va_end(args2); | |
163 | ||
164 | char *text = g_strdup_vprintf(format, args); | |
165 | logging.log(QString::fromUtf8(text), LogSource_sr); | |
166 | g_free(text); | |
167 | ||
168 | return SR_OK; | |
169 | } | |
170 | ||
171 | #ifdef ENABLE_DECODE | |
172 | int Logging::log_srd(void *cb_data, int loglevel, const char *format, va_list args) | |
173 | { | |
174 | va_list args2; | |
175 | ||
176 | (void)cb_data; | |
177 | ||
178 | va_copy(args2, args); | |
179 | if (prev_srd_log_cb) | |
180 | prev_srd_log_cb(prev_srd_log_cb_data, loglevel, format, args2); | |
181 | va_end(args2); | |
182 | ||
183 | char *text = g_strdup_vprintf(format, args); | |
184 | logging.log(QString::fromUtf8(text), LogSource_srd); | |
185 | g_free(text); | |
186 | ||
187 | return SR_OK; | |
188 | } | |
189 | #endif | |
190 | ||
191 | void Logging::on_setting_changed(const QString &key, const QVariant &value) | |
192 | { | |
193 | if (key == GlobalSettings::Key_Log_BufferSize) { | |
194 | // Truncate buffer if needed | |
195 | const int delta = buffer_.size() - value.toInt(); | |
196 | if (delta > 0) | |
197 | buffer_.erase(buffer_.begin(), buffer_.begin() + delta); | |
198 | ||
199 | buffer_size_ = value.toInt(); | |
200 | buffer_.reserve(buffer_size_); | |
201 | } | |
202 | } | |
203 | ||
204 | } // namespace pv |