1 files changed, 270 insertions, 0 deletions
diff --git a/src/3rdparty/freetype/include/dlg/dlg.h b/src/3rdparty/freetype/include/dlg/dlg.h
new file mode 100644
index 0000000000..3a7abf8f05
--- /dev/null
+++ b/src/3rdparty/freetype/include/dlg/dlg.h
@@ -0,0 +1,270 @@
+// Copyright (c) 2019 nyorain
+// Distributed under the Boost Software License, Version 1.0.
+// See accompanying file LICENSE or copy at http://www.boost.org/LICENSE_1_0.txt
+
+#ifndef INC_DLG_DLG_H_
+#define INC_DLG_DLG_H_
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <stdio.h>
+
+// Hosted at https://github.com/nyorain/dlg.
+// There are examples and documentation.
+// Issue reports and contributions appreciated.
+
+// - CONFIG -
+// Define this macro to make all dlg macros have no effect at all
+// #define DLG_DISABLE
+
+// the log/assertion levels below which logs/assertions are ignored
+// defaulted depending on the NDEBUG macro
+#ifndef DLG_LOG_LEVEL
+	#ifdef NDEBUG
+		#define DLG_LOG_LEVEL dlg_level_warn
+	#else
+		#define DLG_LOG_LEVEL dlg_level_trace
+	#endif
+#endif
+
+#ifndef DLG_ASSERT_LEVEL
+	#ifdef NDEBUG
+		#define DLG_ASSERT_LEVEL dlg_level_warn
+	#else
+		#define DLG_ASSERT_LEVEL dlg_level_trace
+	#endif
+#endif
+
+// the assert level of dlg_assert
+#ifndef DLG_DEFAULT_ASSERT
+	#define DLG_DEFAULT_ASSERT dlg_level_error
+#endif
+
+// evaluated to the 'file' member in dlg_origin
+#ifndef DLG_FILE
+	#define DLG_FILE dlg__strip_root_path(__FILE__, DLG_BASE_PATH)
+
+	// the base path stripped from __FILE__. If you don't override DLG_FILE set this to
+	// the project root to make 'main.c' from '/some/bullshit/main.c'
+	#ifndef DLG_BASE_PATH
+		#define DLG_BASE_PATH ""
+	#endif
+#endif
+
+// Default tags applied to all logs/assertions (in the defining file).
+// Must be in format ```#define DLG_DEFAULT_TAGS "tag1", "tag2"```
+// or just nothing (as defaulted here)
+#ifndef DLG_DEFAULT_TAGS
+	#define DLG_DEFAULT_TAGS_TERM NULL
+#else
+	#define DLG_DEFAULT_TAGS_TERM DLG_DEFAULT_TAGS, NULL
+#endif
+
+// The function used for formatting. Can have any signature, but must be callable with
+// the arguments the log/assertions macros are called with. Must return a const char*
+// that will not be freed by dlg, the formatting function must keep track of it.
+// The formatting function might use dlg_thread_buffer or a custom owned buffer.
+// The returned const char* has to be valid until the dlg log/assertion ends.
+// Usually a c function with ... (i.e. using va_list) or a variadic c++ template do
+// allow formatting.
+#ifndef DLG_FMT_FUNC
+	#define DLG_FMT_FUNC dlg__printf_format
+#endif
+
+// Only overwrite (i.e. predefine) this if you know what you are doing.
+// On windows this is used to add the dllimport specified.
+// If you are using the static version of dlg (on windows) define
+// DLG_STATIC before including dlg.h
+#ifndef DLG_API
+ 	#if (defined(_WIN32) || defined(__CYGWIN__)) && !defined(DLG_STATIC)
+		#define DLG_API __declspec(dllimport)
+	#else
+		#define DLG_API
+	#endif
+#endif
+
+// - utility -
+// two methods needed since cplusplus does not support compound literals
+// and c does not support uniform initialization/initializer lists
+#ifdef __cplusplus
+	#include <initializer_list>
+	#define DLG_CREATE_TAGS(...) std::initializer_list<const char*> \
+		{DLG_DEFAULT_TAGS_TERM, __VA_ARGS__, NULL}.begin()
+#else
+	#define DLG_CREATE_TAGS(...) (const char* const[]) {DLG_DEFAULT_TAGS_TERM, __VA_ARGS__, NULL}
+#endif
+
+#ifdef __GNUC__
+	#define DLG_PRINTF_ATTRIB(a, b) __attribute__ ((format (printf, a, b)))
+#else
+	#define DLG_PRINTF_ATTRIB(a, b)
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+// Represents the importance of a log/assertion call.
+enum dlg_level {
+	dlg_level_trace = 0, // temporary used debug, e.g. to check if control reaches function
+	dlg_level_debug, // general debugging, prints e.g. all major events
+	dlg_level_info, // general useful information
+	dlg_level_warn, // warning, something went wrong but might have no (really bad) side effect
+	dlg_level_error, // something really went wrong; expect serious issues
+	dlg_level_fatal // critical error; application is likely to crash/exit
+};
+
+// Holds various information associated with a log/assertion call.
+// Forwarded to the output handler.
+struct dlg_origin {
+	const char* file;
+	unsigned int line;
+	const char* func;
+	enum dlg_level level;
+	const char** tags; // null-terminated
+	const char* expr; // assertion expression, otherwise null
+};
+
+// Type of the output handler, see dlg_set_handler.
+typedef void(*dlg_handler)(const struct dlg_origin* origin, const char* string, void* data);
+
+#ifdef DLG_DISABLE
+	// Tagged/Untagged logging with variable level
+	// Tags must always be in the format `("tag1", "tag2")` (including brackets)
+	#define dlg_log(level, ...)
+	#define dlg_logt(level, tags, ...)
+
+	// Dynamic level assert macros in various versions for additional arguments
+	#define dlg_assertl(level, expr) // assert without tags/message
+	#define dlg_assertlt(level, tags, expr) // assert with tags
+	#define dlg_assertlm(level, expr, ...) // assert with message
+	#define dlg_assertltm(level, tags, expr, ...) // assert with tags & message
+
+	// Sets the handler that is responsible for formatting and outputting log calls.
+	// This function is not thread safe and the handler is set globally.
+	// The handler itself must not change dlg tags or call a dlg macro (if it
+	// does so, the provided string or tags array in 'origin' might get invalid).
+	// The handler can also be used for various other things such as dealing
+	// with failed assertions or filtering calls based on the passed tags.
+	// The default handler is dlg_default_output (see its doc for more info).
+	// If using c++ make sure the registered handler cannot throw e.g. by
+	// wrapping everything into a try-catch blog.
+	inline void dlg_set_handler(dlg_handler handler, void* data) {
+		(void) handler;
+		(void) data;
+	}
+
+	// Returns the currently active dlg handler and sets `data` to
+	// its user data pointer. `data` must not be NULL.
+	// Useful to create handler chains.
+	// This function is not threadsafe, i.e. retrieving the handler while
+	// changing it from another thread is unsafe.
+	// See `dlg_set_handler`.
+	inline dlg_handler dlg_get_handler(void** data) {
+		*data = NULL;
+		return NULL;
+	}
+
+	// The default output handler.
+	// Only use this to reset the output handler, prefer to use
+	// dlg_generic_output (from output.h) which this function simply calls.
+	// It also flushes the stream used and correctly outputs even from multiple threads.
+	inline void dlg_default_output(const struct dlg_origin* o, const char* str, void* data) {
+		(void) o;
+		(void) str;
+		(void) data;
+	}
+
+	// Adds the given tag associated with the given function to the thread specific list.
+	// If func is not NULL the tag will only applied to calls from the same function.
+	// Remove the tag again calling dlg_remove_tag (with exactly the same pointers!).
+	// Does not check if the tag is already present.
+	inline void dlg_add_tag(const char* tag, const char* func) {
+		(void) tag;
+		(void) func;
+	}
+
+	// Removes a tag added with dlg_add_tag (has no effect for tags no present).
+	// The pointers must be exactly the same pointers that were supplied to dlg_add_tag,
+	// this function will not check using strcmp. When the same tag/func combination
+	// is added multiple times, this function remove exactly one candidate, it is
+	// undefined which. Returns whether a tag was found (and removed).
+	inline bool dlg_remove_tag(const char* tag, const char* func) {
+		(void) tag;
+		(void) func;
+		return true;
+	}
+
+	// Returns the thread-specific buffer and its size for dlg.
+	// The buffer should only be used by formatting functions.
+	// The buffer can be reallocated and the size changed, just make sure
+	// to update both values correctly.
+	inline char** dlg_thread_buffer(size_t** size) {
+		(void) size;
+		return NULL;
+	}
+
+#else // DLG_DISABLE
+	#define dlg_log(level, ...) if(level >= DLG_LOG_LEVEL) \
+		dlg__do_log(level, DLG_CREATE_TAGS(NULL), DLG_FILE, __LINE__, __func__,  \
+		DLG_FMT_FUNC(__VA_ARGS__), NULL)
+	#define dlg_logt(level, tags, ...) if(level >= DLG_LOG_LEVEL) \
+		dlg__do_log(level, DLG_CREATE_TAGS tags, DLG_FILE, __LINE__, __func__, \
+		DLG_FMT_FUNC(__VA_ARGS__), NULL)
+
+	#define dlg_assertl(level, expr) if(level >= DLG_ASSERT_LEVEL && !(expr)) \
+		dlg__do_log(level, DLG_CREATE_TAGS(NULL), DLG_FILE, __LINE__, __func__, NULL, #expr)
+	#define dlg_assertlt(level, tags, expr) if(level >= DLG_ASSERT_LEVEL && !(expr)) \
+		dlg__do_log(level, DLG_CREATE_TAGS tags, DLG_FILE, __LINE__, __func__, NULL, #expr)
+	#define dlg_assertlm(level, expr, ...) if(level >= DLG_ASSERT_LEVEL && !(expr)) \
+		dlg__do_log(level, DLG_CREATE_TAGS(NULL), DLG_FILE, __LINE__, __func__,  \
+		DLG_FMT_FUNC(__VA_ARGS__), #expr)
+	#define dlg_assertltm(level, tags, expr, ...) if(level >= DLG_ASSERT_LEVEL && !(expr)) \
+		dlg__do_log(level, DLG_CREATE_TAGS tags, DLG_FILE, __LINE__,  \
+		__func__, DLG_FMT_FUNC(__VA_ARGS__), #expr)
+
+	DLG_API void dlg_set_handler(dlg_handler handler, void* data);
+	DLG_API dlg_handler dlg_get_handler(void** data);
+	DLG_API void dlg_default_output(const struct dlg_origin*, const char* string, void*);
+	DLG_API void dlg_add_tag(const char* tag, const char* func);
+	DLG_API bool dlg_remove_tag(const char* tag, const char* func);
+	DLG_API char** dlg_thread_buffer(size_t** size);
+
+	// - Private interface: not part of the abi/api but needed in macros -
+	// Formats the given format string and arguments as printf would, uses the thread buffer.
+	DLG_API const char* dlg__printf_format(const char* format, ...) DLG_PRINTF_ATTRIB(1, 2);
+	DLG_API void dlg__do_log(enum dlg_level lvl, const char* const*, const char*, int,
+		const char*, const char*, const char*);
+	DLG_API const char* dlg__strip_root_path(const char* file, const char* base);
+#endif // DLG_DISABLE
+
+// Untagged leveled logging
+#define dlg_trace(...) dlg_log(dlg_level_trace, __VA_ARGS__)
+#define dlg_debug(...) dlg_log(dlg_level_debug, __VA_ARGS__)
+#define dlg_info(...) dlg_log(dlg_level_info, __VA_ARGS__)
+#define dlg_warn(...) dlg_log(dlg_level_warn, __VA_ARGS__)
+#define dlg_error(...) dlg_log(dlg_level_error, __VA_ARGS__)
+#define dlg_fatal(...) dlg_log(dlg_level_fatal, __VA_ARGS__)
+
+// Tagged leveled logging
+#define dlg_tracet(tags, ...) dlg_logt(dlg_level_trace, tags, __VA_ARGS__)
+#define dlg_debugt(tags, ...) dlg_logt(dlg_level_debug, tags, __VA_ARGS__)
+#define dlg_infot(tags, ...) dlg_logt(dlg_level_info, tags, __VA_ARGS__)
+#define dlg_warnt(tags, ...) dlg_logt(dlg_level_warn, tags, __VA_ARGS__)
+#define dlg_errort(tags, ...) dlg_logt(dlg_level_error, tags, __VA_ARGS__)
+#define dlg_fatalt(tags, ...) dlg_logt(dlg_level_fatal, tags, __VA_ARGS__)
+
+// Assert macros useing DLG_DEFAULT_ASSERT as level
+#define dlg_assert(expr) dlg_assertl(DLG_DEFAULT_ASSERT, expr)
+#define dlg_assertt(tags, expr) dlg_assertlt(DLG_DEFAULT_ASSERT, tags, expr)
+#define dlg_assertm(expr, ...) dlg_assertlm(DLG_DEFAULT_ASSERT, expr, __VA_ARGS__)
+#define dlg_asserttm(tags, expr, ...) dlg_assertltm(DLG_DEFAULT_ASSERT, tags, expr, __VA_ARGS__)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // header guard