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Initial dqn logger implementation

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Doyle T 2018-08-18 16:14:29 +10:00
parent f8a5853862
commit cfb1dc9d19
1 changed files with 89 additions and 1 deletions
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90
dqn.h
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@ -44,7 +44,8 @@
// #DqnRect Rectangles
// #DqnString String library
// #DqnFixedString Fixed sized strings at compile time.
// #DqnHashTable Hash Tables using Templates
// #DqnLogger
// #DqnJson Zero Allocation Json Parser
// #XPlatform (Win32 & Unix)
// #DqnVArray Array backed by virtual memory
@ -1941,6 +1942,56 @@ using DqnFixedString512 = DqnFixedString<512>;
using DqnFixedString1024 = DqnFixedString<1024>;
using DqnFixedString2048 = DqnFixedString<2048>;
// #DqnLogger Public API
// =================================================================================================
struct DqnLogger
{
#define LOG_TYPES \
X(Warning, "WARN ") \
X(Error, "ERROR") \
X(Debug, "DEBUG")
#define X(type, prefix) type,
enum struct Type { LOG_TYPES };
#undef X
#define X(type, prefix) prefix,
static char const *TypePrefix(Type type)
{
LOCAL_PERSIST char const *type_string[] = {LOG_TYPES};
return type_string[static_cast<i32>(type)];
}
#undef X
#undef LOG_TYPES
struct Context
{
char *filename;
int filename_len;
char *function;
int function_len;
int line_number;
};
#define DQN_LOGGER_CONTEXT {__FILE__, DQN_CHAR_COUNT(__FILE__), __func__, DQN_CHAR_COUNT(__func__), __LINE__}
#define DQN_LOGGER_D(logger, fmt, ...) logger.Log(DqnLogger::Type::Debug, {__FILE__, DQN_CHAR_COUNT(__FILE__), __func__, DQN_CHAR_COUNT(__func__), __LINE__}, fmt, ## __VA_ARGS__)
#define DQN_LOGGER_W(logger, fmt, ...) logger.Log(DqnLogger::Type::Warning, {__FILE__, DQN_CHAR_COUNT(__FILE__), __func__, DQN_CHAR_COUNT(__func__), __LINE__}, fmt, ## __VA_ARGS__)
#define DQN_LOGGER_E(logger, fmt, ...) logger.Log(DqnLogger::Type::Error, {__FILE__, DQN_CHAR_COUNT(__FILE__), __func__, DQN_CHAR_COUNT(__func__), __LINE__}, fmt, ## __VA_ARGS__)
DqnFixedString1024 log_builder;
b32 no_console; // Log to console if false.
b32 no_print_error;
b32 no_print_debug;
b32 no_print_warning;
// Build up a log line that gets prepended to the next log. When Log() is called and is then reset.
// <file context> <prepend to log> <log message>
void PrependToLog(char const *fmt, ...) { va_list va; va_start (va, fmt); log_builder.VSprintfAppend(fmt, va); va_end(va); }
// return: A static string whose lifetime persists until the next log call.
char const *Log(Type type, Context const log_context, char const *fmt, ...);
};
struct DqnJson
{
enum struct Type
@ -5671,6 +5722,43 @@ FILE_SCOPE int DqnFixedString__Append(char *dest, int dest_size, char const *src
return len;
}
// #DqnLogger Implementation
// =================================================================================================
char const *DqnLogger::Log(Type type, Context const log_context, char const *fmt, ...)
{
va_list va;
va_start(va, fmt);
DQN_DEFER(va_end(va));
LOCAL_PERSIST DqnFixedString2048 fmt_msg;
fmt_msg.Clear();
char const *stripped_filename = nullptr;
for (size_t i = log_context.filename_len; i >= 0 && !stripped_filename; i--)
stripped_filename = (log_context.filename[i] == '\\') ? log_context.filename + (i + 1) : nullptr;
fmt_msg.SprintfAppend("%s|%05d|%s| `%s`: ",
(stripped_filename) ? stripped_filename : log_context.filename,
log_context.line_number,
TypePrefix(type),
log_context.function);
fmt_msg.SprintfAppend("%s", this->log_builder.str);
this->log_builder.Clear();
fmt_msg.VSprintfAppend(fmt, va);
fmt_msg.SprintfAppend("\n");
char const *result = fmt_msg.str;
if (this->no_console) return result;
if (this->no_print_error && type == Type::Error) return result;
if (this->no_print_debug && type == Type::Debug) return result;
if (this->no_print_warning && type == Type::Warning) return result;
fprintf(stderr, "%s", result);
return result;
}
// #Dqn
// =================================================================================================
i32 Dqn_GetNumSplits(char const *src, i32 src_len, char split_char)