traceStream and traceAsyncWebSocket are now separate repositories to avoid compile problems without web server

src/Trace.h

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+/**
+ * @file trace.h
+ * @author Pavel Brychta, http://www.xpablo.cz
+ *
+ * Copyright (c) 2016-24 Pavel Brychta. All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+#pragma once
+#include <Arduino.h>
+
+// Vydefinujeme-li promennou TRACE_ALL=1, pak TRACEPLUS bude vypisovat vsechny zpravy nezavisle od povoleni/zakazani
+
+// Definice jednotlivych typu hlaseni do trasovani
+#define TRACE_NONE    (-1) // nic
+#define TRACE_ERROR   0 // chybova zprava = cervena
+#define TRACE_WARNING 1 // varovani - zluta
+#define TRACE_INFO    2 // informacni zprava - zelena
+#define TRACE_DEBUG   3 // ladici zprava - cerna
+#define TRACE_VERBOSE 4 // mene zajimava ladici zprava - take cerna
+
+#ifndef TRACE_LIMIT
+    #define TRACE_LIMIT TRACE_DEBUG
+#endif
+#define STRINGIFY(x) #x
+#define TOSTRING(x)  STRINGIFY(x)
+
+class Trace {
+protected:
+public:
+    Trace() = default;
+
+    virtual ~Trace() = default;
+
+    virtual void init() {};
+
+    virtual void print(uint8_t severity, const __FlashStringHelper * fmt, ...) {};
+
+    virtual void print(uint8_t severity, const char * fmt, ...) {};
+
+    virtual void dump(uint8_t severity, const char * prefix, const uint8_t * address, size_t size) {};
+
+    virtual void dump(uint8_t severity, const __FlashStringHelper * prefix, const uint8_t * address, size_t size) {};
+
+    virtual void forceupdate() {};
+};
+
+extern Trace * mTrace; // Main Trace instance
+
+#define TRACE(severity, text, ...) \
+    do { \
+        constexpr bool trace_limit = (severity <= TRACE_LIMIT); \
+        if (trace_limit) \
+            if (mTrace) { mTrace->print(severity, PSTR(text), ##__VA_ARGS__); } \
+        } while (0)
+#define TRACEFUNC(severity, ...)                   if (mTrace) { mTrace->printfunc(severity, __func__, __FILE__, TOSTRING(__LINE__), __VA_ARGS__); }
+#define TRACEDUMP(severity, prefix, address, size) if (mTrace) { mTrace->dump(severity, prefix, address, size); }
+#define TRACE_INIT(a)                              if (mTrace) { mTrace->init(); }
+#define TRACE_FORCEUPDATE(a)                       if (mTrace) { mTrace->forceupdate(); }
+
+#ifndef TRACE_ALL
+    #define TRACE_ALL 0
+#endif
+
+#define TRACEPLUS(when, severity, ...) \
+do { \
+    constexpr bool handle = (when != 0) || TRACE_ALL; \
+    if (handle) \
+        TRACE(severity, __VA_ARGS__); \
+} while (0)