344 lines
12 KiB
C
344 lines
12 KiB
C
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#if defined(SOKOL_IMPL) && !defined(SOKOL_LOG_IMPL)
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#define SOKOL_LOG_IMPL
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#endif
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#ifndef SOKOL_LOG_INCLUDED
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/*
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sokol_log.h -- common logging callback for sokol headers
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Project URL: https://github.com/floooh/sokol
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Example code: https://github.com/floooh/sokol-samples
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Do this:
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#define SOKOL_IMPL or
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#define SOKOL_LOG_IMPL
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before you include this file in *one* C or C++ file to create the
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implementation.
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Optionally provide the following defines when building the implementation:
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SOKOL_ASSERT(c) - your own assert macro (default: assert(c))
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SOKOL_UNREACHABLE() - a guard macro for unreachable code (default: assert(false))
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SOKOL_LOG_API_DECL - public function declaration prefix (default: extern)
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SOKOL_API_DECL - same as SOKOL_GFX_API_DECL
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SOKOL_API_IMPL - public function implementation prefix (default: -)
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Optionally define the following for verbose output:
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SOKOL_DEBUG - by default this is defined if _DEBUG is defined
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OVERVIEW
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========
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sokol_log.h provides a default logging callback for other sokol headers.
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To use the default log callback, just include sokol_log.h and provide
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a function pointer to the 'slog_func' function when setting up the
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sokol library:
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For instance with sokol_audio.h:
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#include "sokol_log.h"
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...
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saudio_setup(&(saudio_desc){ .logger.func = slog_func });
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Logging output goes to stderr and/or a platform specific logging subsystem
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(which means that in some scenarios you might see logging messages duplicated):
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- Windows: stderr + OutputDebugStringA()
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- macOS/iOS/Linux: stderr + syslog()
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- Emscripten: console.info()/warn()/error()
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- Android: __android_log_write()
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On Windows with sokol_app.h also note the runtime config items to make
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stdout/stderr output visible on the console for WinMain() applications
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via sapp_desc.win32_console_attach or sapp_desc.win32_console_create,
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however when running in a debugger on Windows, the logging output should
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show up on the debug output UI panel.
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In debug mode, a log message might look like this:
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[sspine][error][id:12] /Users/floh/projects/sokol/util/sokol_spine.h:3472:0:
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SKELETON_DESC_NO_ATLAS: no atlas object provided in sspine_skeleton_desc.atlas
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The source path and line number is formatted like compiler errors, in some IDEs (like VSCode)
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such error messages are clickable.
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In release mode, logging is less verbose as to not bloat the executable with string data, but you still get
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enough information to identify the type and location of an error:
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[sspine][error][id:12][line:3472]
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RULES FOR WRITING YOUR OWN LOGGING FUNCTION
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===========================================
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- must be re-entrant because it might be called from different threads
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- must treat **all** provided string pointers as optional (can be null)
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- don't store the string pointers, copy the string data instead
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- must not return for log level panic
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LICENSE
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=======
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zlib/libpng license
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Copyright (c) 2023 Andre Weissflog
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This software is provided 'as-is', without any express or implied warranty.
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In no event will the authors be held liable for any damages arising from the
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use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software in a
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product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not
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be misrepresented as being the original software.
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3. This notice may not be removed or altered from any source
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distribution.
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*/
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#define SOKOL_LOG_INCLUDED (1)
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#include <stdint.h>
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#if defined(SOKOL_API_DECL) && !defined(SOKOL_LOG_API_DECL)
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#define SOKOL_LOG_API_DECL SOKOL_API_DECL
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#endif
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#ifndef SOKOL_LOG_API_DECL
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#if defined(_WIN32) && defined(SOKOL_DLL) && defined(SOKOL_LOG_IMPL)
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#define SOKOL_LOG_API_DECL __declspec(dllexport)
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#elif defined(_WIN32) && defined(SOKOL_DLL)
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#define SOKOL_LOG_API_DECL __declspec(dllimport)
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#else
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#define SOKOL_LOG_API_DECL extern
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#endif
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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Plug this function into the 'logger.func' struct item when initializing any of the sokol
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headers. For instance for sokol_audio.h it would loom like this:
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saudio_setup(&(saudio_desc){
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.logger = {
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.func = slog_func
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}
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});
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*/
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SOKOL_LOG_API_DECL void slog_func(const char* tag, uint32_t log_level, uint32_t log_item, const char* message, uint32_t line_nr, const char* filename, void* user_data);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // SOKOL_LOG_INCLUDED
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// ██ ███ ███ ██████ ██ ███████ ███ ███ ███████ ███ ██ ████████ █████ ████████ ██ ██████ ███ ██
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// ██ ████ ████ ██ ██ ██ ██ ████ ████ ██ ████ ██ ██ ██ ██ ██ ██ ██ ██ ████ ██
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// ██ ██ ████ ██ ██████ ██ █████ ██ ████ ██ █████ ██ ██ ██ ██ ███████ ██ ██ ██ ██ ██ ██ ██
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// ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██
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// ██ ██ ██ ██ ███████ ███████ ██ ██ ███████ ██ ████ ██ ██ ██ ██ ██ ██████ ██ ████
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//
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// >>implementation
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#ifdef SOKOL_LOG_IMPL
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#define SOKOL_LOG_IMPL_INCLUDED (1)
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#ifndef SOKOL_API_IMPL
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#define SOKOL_API_IMPL
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#endif
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#ifndef SOKOL_DEBUG
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#ifndef NDEBUG
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#define SOKOL_DEBUG
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#endif
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#endif
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#ifndef SOKOL_ASSERT
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#include <assert.h>
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#define SOKOL_ASSERT(c) assert(c)
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#endif
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#ifndef _SOKOL_PRIVATE
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#if defined(__GNUC__) || defined(__clang__)
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#define _SOKOL_PRIVATE __attribute__((unused)) static
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#else
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#define _SOKOL_PRIVATE static
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#endif
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#endif
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#ifndef _SOKOL_UNUSED
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#define _SOKOL_UNUSED(x) (void)(x)
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#endif
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// platform detection
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#if defined(__APPLE__)
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#define _SLOG_APPLE (1)
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#elif defined(__EMSCRIPTEN__)
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#define _SLOG_EMSCRIPTEN (1)
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#elif defined(_WIN32)
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#define _SLOG_WINDOWS (1)
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#elif defined(__ANDROID__)
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#define _SLOG_ANDROID (1)
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#elif defined(__linux__) || defined(__unix__)
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#define _SLOG_LINUX (1)
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#else
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#error "sokol_log.h: unknown platform"
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#endif
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#include <stdlib.h> // abort
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#include <stdio.h> // fputs
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#include <stddef.h> // size_t
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#if defined(_SLOG_EMSCRIPTEN)
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#include <emscripten/emscripten.h>
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#elif defined(_SLOG_WINDOWS)
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#ifndef WIN32_LEAN_AND_MEAN
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#define WIN32_LEAN_AND_MEAN
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#endif
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#ifndef NOMINMAX
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#define NOMINMAX
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#endif
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#include <windows.h>
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#elif defined(_SLOG_ANDROID)
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#include <android/log.h>
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#elif defined(_SLOG_LINUX) || defined(_SLOG_APPLE)
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#include <syslog.h>
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#endif
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// size of line buffer (on stack!) in bytes including terminating zero
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#define _SLOG_LINE_LENGTH (512)
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_SOKOL_PRIVATE char* _slog_append(const char* str, char* dst, char* end) {
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if (str) {
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char c;
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while (((c = *str++) != 0) && (dst < (end - 1))) {
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*dst++ = c;
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}
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}
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*dst = 0;
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return dst;
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}
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_SOKOL_PRIVATE char* _slog_itoa(uint32_t x, char* buf, size_t buf_size) {
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const size_t max_digits_and_null = 11;
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if (buf_size < max_digits_and_null) {
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return 0;
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}
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char* p = buf + max_digits_and_null;
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*--p = 0;
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do {
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*--p = '0' + (x % 10);
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x /= 10;
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} while (x != 0);
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return p;
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}
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#if defined(_SLOG_EMSCRIPTEN)
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EM_JS(void, slog_js_log, (uint32_t level, const char* c_str), {
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const str = UTF8ToString(c_str);
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switch (level) {
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case 0: console.error(str); break;
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case 1: console.error(str); break;
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case 2: console.warn(str); break;
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default: console.info(str); break;
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}
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});
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#endif
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SOKOL_API_IMPL void slog_func(const char* tag, uint32_t log_level, uint32_t log_item, const char* message, uint32_t line_nr, const char* filename, void* user_data) {
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_SOKOL_UNUSED(user_data);
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const char* log_level_str;
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switch (log_level) {
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case 0: log_level_str = "panic"; break;
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case 1: log_level_str = "error"; break;
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case 2: log_level_str = "warning"; break;
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default: log_level_str = "info"; break;
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}
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// build log output line
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char line_buf[_SLOG_LINE_LENGTH];
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char* str = line_buf;
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char* end = line_buf + sizeof(line_buf);
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char num_buf[32];
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if (tag) {
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str = _slog_append("[", str, end);
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str = _slog_append(tag, str, end);
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str = _slog_append("]", str, end);
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}
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str = _slog_append("[", str, end);
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str = _slog_append(log_level_str, str, end);
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str = _slog_append("]", str, end);
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str = _slog_append("[id:", str, end);
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str = _slog_append(_slog_itoa(log_item, num_buf, sizeof(num_buf)), str, end);
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str = _slog_append("]", str, end);
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// if a filename is provided, build a clickable log message that's compatible with compiler error messages
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if (filename) {
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str = _slog_append(" ", str, end);
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#if defined(_MSC_VER)
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// MSVC compiler error format
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str = _slog_append(filename, str, end);
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str = _slog_append("(", str, end);
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str = _slog_append(_slog_itoa(line_nr, num_buf, sizeof(num_buf)), str, end);
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str = _slog_append("): ", str, end);
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#else
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// gcc/clang compiler error format
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str = _slog_append(filename, str, end);
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str = _slog_append(":", str, end);
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str = _slog_append(_slog_itoa(line_nr, num_buf, sizeof(num_buf)), str, end);
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str = _slog_append(":0: ", str, end);
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#endif
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}
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else {
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str = _slog_append("[line:", str, end);
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str = _slog_append(_slog_itoa(line_nr, num_buf, sizeof(num_buf)), str, end);
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str = _slog_append("] ", str, end);
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}
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if (message) {
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str = _slog_append("\n\t", str, end);
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str = _slog_append(message, str, end);
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}
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str = _slog_append("\n\n", str, end);
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if (0 == log_level) {
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str = _slog_append("ABORTING because of [panic]\n", str, end);
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(void)str;
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}
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// print to stderr?
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#if defined(_SLOG_LINUX) || defined(_SLOG_WINDOWS) || defined(_SLOG_APPLE)
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fputs(line_buf, stderr);
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#endif
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// platform specific logging calls
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#if defined(_SLOG_WINDOWS)
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OutputDebugStringA(line_buf);
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#elif defined(_SLOG_ANDROID)
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int prio;
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switch (log_level) {
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case 0: prio = ANDROID_LOG_FATAL; break;
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case 1: prio = ANDROID_LOG_ERROR; break;
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case 2: prio = ANDROID_LOG_WARN; break;
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default: prio = ANDROID_LOG_INFO; break;
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}
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__android_log_write(prio, "SOKOL", line_buf);
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#elif defined(_SLOG_EMSCRIPTEN)
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slog_js_log(log_level, line_buf);
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#elif defined(_SLOG_LINUX) || defined(_SLOG_APPLE)
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int prio;
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switch (log_level) {
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case 0: prio = LOG_CRIT; break;
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case 1: prio = LOG_ERR; break;
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case 2: prio = LOG_WARNING; break;
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default: prio = LOG_INFO; break;
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}
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syslog(prio, "%s", line_buf);
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#endif
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if (0 == log_level) {
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abort();
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}
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}
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#endif // SOKOL_LOG_IMPL
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