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Epochryphon
2026-06-28 08:45:41 -05:00
parent f9ea34994b
commit a97fa4e6d2
5 changed files with 385 additions and 218 deletions
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2
README.md
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@@ -13,7 +13,7 @@ function-like macros for logging:
log_trace(const char *fmt, ...);
log_debug(const char *fmt, ...);
log_info(const char *fmt, ...);
log_warn(const char *fmt, ...);
log_warning(const char *fmt, ...);
log_error(const char *fmt, ...);
log_fatal(const char *fmt, ...);
```

295
source_code/new_log.c Normal file
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@@ -0,0 +1,295 @@
/*
* Original work Copyright (c) 2020 rxi (MIT License)
*
* ORIGINAL:
* Copyright (c) 2020 rxi
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
*
* Modified work Copyright (c) 2026 Emilia Marigold (AGPLv3)
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation; either version 3 of the License, or (at
* your option) any later version.
*
* See the LICENSE file for the full AGPLv3 terms and conditions.
***/
#include "new_log.h"
#define MAX_CALLBACKS 32
typedef
struct callback_struct
{
log_function function;
void *user_data;
int severity_level;
}
callback_type;
static struct global_log_data_struct
{
void *user_data;
lock_function lock;
int severity_level;
bool quiet;
callback_type callbacks[MAX_CALLBACKS];
} global_log_data_struct;
static const char *
level_strings[] =
{
"TRACE",
"DEBUG",
"INFO",
"WARNING",
"ERROR",
"FATAL"
};
#ifdef LOG_USE_COLOR
static const char *level_colors[] =
{
"\x1b[94m",
"\x1b[36m",
"\x1b[32m",
"\x1b[33m",
"\x1b[31m",
"\x1b[35m"
};
#endif
static void
stdout_callback(log_event_type *event)
{
char buffer[16];
buffer[strftime(buffer,
sizeof(buffer),
"%H:%M:%S",
event->local_time)] = '\0';
#ifdef LOG_USE_COLOR
fprintf(event->user_data,
"%s %s%-5s\x1b[0m \x1b[90m%s:%d:\x1b[0m ",
buffer,
level_colors[event->severity_level],
level_strings[event->severity_level],
event->file,
event->line);
#else
fprintf(event->user_data,
"%s %-5s %s:%d: ",
buffer,
level_strings[event->severity_level],
event->file,
event->line);
#endif
vfprintf(event->user_data,
event->format,
event->argument_pointer);
fprintf(event->user_data,
"\n");
fflush(event->user_data);
}
static void
file_callback(log_event_type *event)
{
char buffer[64];
buffer[strftime(buffer,
sizeof(buffer),
"%Y-%m-%d %H:%M:%S",
event->local_time)] = '\0';
fprintf(event->user_data,
"%s %-5s %s:%d: ",
buffer,
level_strings[event->severity_level],
event->file,
event->line);
vfprintf(event->user_data,
event->format,
event->argument_pointer);
fprintf(event->user_data,
"\n");
fflush(event->user_data);
}
static void
lock(void)
{
if (global_log_data_struct.lock)
{
global_log_data_struct.lock(true,
global_log_data_struct.user_data);
}
}
static void
unlock(void)
{
if (global_log_data_struct.lock)
{
global_log_data_struct.lock(false,
global_log_data_struct.user_data);
}
}
const char*
log_level_string(int severity_level)
{
return level_strings[severity_level];
}
void
log_set_lock(lock_function function,
void *user_data)
{
global_log_data_struct.lock = function;
global_log_data_struct.user_data = user_data;
}
void
log_set_level(int severity_level)
{
global_log_data_struct.severity_level = severity_level;
}
void
log_set_quiet(bool should_be_quiet)
{
global_log_data_struct.quiet = should_be_quiet;
}
int
log_add_callback(log_function function,
void *user_data,
int level)
{
for (int i = 0; i < MAX_CALLBACKS; i++)
{
if (global_log_data_struct.callbacks[i].function)
{
continue;
}
global_log_data_struct.callbacks[i] = (callback_type)
{
function,
user_data,
level
};
return 0;
}
return -1;
}
int
log_add_file_pointer(FILE *file_pointer,
int level)
{
return log_add_callback(file_callback,
file_pointer,
level);
}
static void
init_event(log_event_type *event,
void *user_data)
{
if (!event->local_time)
{
time_t timer = time(NULL);
event->local_time = localtime(&timer);
}
event->user_data = user_data;
}
void
log_log(int severity_level,
const char *file,
int line,
const char *format,
...)
{
log_event_type event =
{
.format = format,
.file = file,
.line = line,
.severity_level = severity_level,
};
lock();
if (!global_log_data_struct.quiet
&& severity_level >= global_log_data_struct.severity_level)
{
init_event(&event,
stderr);
va_start(event.argument_pointer,
format);
stdout_callback(&event);
va_end(event.argument_pointer);
}
for (int i = 0; i < MAX_CALLBACKS
&& global_log_data_struct.callbacks[i].function;
i++)
{
callback_type *callback_pointer = &global_log_data_struct.callbacks[i];
if (severity_level >= callback_pointer->severity_level)
{
init_event(&event,
callback_pointer->user_data);
va_start(event.argument_pointer,
format);
callback_pointer->function(&event);
va_end(event.argument_pointer);
}
}
unlock();
}

89
source_code/new_log.h Normal file
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@@ -0,0 +1,89 @@
/**
* Copyright (c) 2020 rxi
*
* Original library is free software; you can redistribute it and/or modify it
* under the terms of the MIT license. See `log.c` for details.
*
* Modified work Copyright (c) 2026 Emilia Marigold.
* New changes licensed under the AGPLv3 license.
*/
#ifndef LOG_H
#define LOG_H
#include <stdio.h>
#include <stdarg.h>
#include <stdbool.h>
#include <time.h>
#define LOG_VERSION "r:180.26.1"
typedef
struct log_event_struct
{
va_list argument_pointer;
const char *format;
const char *file;
struct tm *local_time;
void *user_data;
int line;
int severity_level;
}
log_event_type;
typedef
void
(*log_function)(log_event_type *event);
typedef
void
(*lock_function)(bool lock,
void *user_data);
enum
{
LOG_TRACE_ENUM = 0,
LOG_DEBUG_ENUM,
LOG_INFO_ENUM,
LOG_WARNING_ENUM,
LOG_ERROR_ENUM,
LOG_FATAL_ENUM
};
#define log_trace(...) log_log(LOG_TRACE_ENUM, __FILE__, __LINE__, __VA_ARGS__)
#define log_debug(...) log_log(LOG_DEBUG_ENUM, __FILE__, __LINE__, __VA_ARGS__)
#define log_info(...) log_log(LOG_INFO_ENUM, __FILE__, __LINE__, __VA_ARGS__)
#define log_warning(...) log_log(LOG_WARNING_ENUM, __FILE__, __LINE__, __VA_ARGS__)
#define log_error(...) log_log(LOG_ERROR_ENUM, __FILE__, __LINE__, __VA_ARGS__)
#define log_fatal(...) log_log(LOG_FATAL_ENUM, __FILE__, __LINE__, __VA_ARGS__)
const char*
log_level_string(int severity_level);
void
log_set_lock(lock_function function,
void *user_data);
void
log_set_level(int severity_level);
void
log_set_quiet(bool should_be_quiet);
int
log_add_callback(log_function function,
void *user_data,
int severity_level);
int
log_add_file_pointer(FILE *file_pointer,
int severity_level);
void
log_log(int severity_level,
const char *file,
int line,
const char *format,
...);
#endif

168
src/log.c
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@@ -1,168 +0,0 @@
/*
* Copyright (c) 2020 rxi
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include "log.h"
#define MAX_CALLBACKS 32
typedef struct {
log_LogFn fn;
void *udata;
int level;
} Callback;
static struct {
void *udata;
log_LockFn lock;
int level;
bool quiet;
Callback callbacks[MAX_CALLBACKS];
} L;
static const char *level_strings[] = {
"TRACE", "DEBUG", "INFO", "WARN", "ERROR", "FATAL"
};
#ifdef LOG_USE_COLOR
static const char *level_colors[] = {
"\x1b[94m", "\x1b[36m", "\x1b[32m", "\x1b[33m", "\x1b[31m", "\x1b[35m"
};
#endif
static void stdout_callback(log_Event *ev) {
char buf[16];
buf[strftime(buf, sizeof(buf), "%H:%M:%S", ev->time)] = '\0';
#ifdef LOG_USE_COLOR
fprintf(
ev->udata, "%s %s%-5s\x1b[0m \x1b[90m%s:%d:\x1b[0m ",
buf, level_colors[ev->level], level_strings[ev->level],
ev->file, ev->line);
#else
fprintf(
ev->udata, "%s %-5s %s:%d: ",
buf, level_strings[ev->level], ev->file, ev->line);
#endif
vfprintf(ev->udata, ev->fmt, ev->ap);
fprintf(ev->udata, "\n");
fflush(ev->udata);
}
static void file_callback(log_Event *ev) {
char buf[64];
buf[strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", ev->time)] = '\0';
fprintf(
ev->udata, "%s %-5s %s:%d: ",
buf, level_strings[ev->level], ev->file, ev->line);
vfprintf(ev->udata, ev->fmt, ev->ap);
fprintf(ev->udata, "\n");
fflush(ev->udata);
}
static void lock(void) {
if (L.lock) { L.lock(true, L.udata); }
}
static void unlock(void) {
if (L.lock) { L.lock(false, L.udata); }
}
const char* log_level_string(int level) {
return level_strings[level];
}
void log_set_lock(log_LockFn fn, void *udata) {
L.lock = fn;
L.udata = udata;
}
void log_set_level(int level) {
L.level = level;
}
void log_set_quiet(bool enable) {
L.quiet = enable;
}
int log_add_callback(log_LogFn fn, void *udata, int level) {
for (int i = 0; i < MAX_CALLBACKS; i++) {
if (!L.callbacks[i].fn) {
L.callbacks[i] = (Callback) { fn, udata, level };
return 0;
}
}
return -1;
}
int log_add_fp(FILE *fp, int level) {
return log_add_callback(file_callback, fp, level);
}
static void init_event(log_Event *ev, void *udata) {
if (!ev->time) {
time_t t = time(NULL);
ev->time = localtime(&t);
}
ev->udata = udata;
}
void log_log(int level, const char *file, int line, const char *fmt, ...) {
log_Event ev = {
.fmt = fmt,
.file = file,
.line = line,
.level = level,
};
lock();
if (!L.quiet && level >= L.level) {
init_event(&ev, stderr);
va_start(ev.ap, fmt);
stdout_callback(&ev);
va_end(ev.ap);
}
for (int i = 0; i < MAX_CALLBACKS && L.callbacks[i].fn; i++) {
Callback *cb = &L.callbacks[i];
if (level >= cb->level) {
init_event(&ev, cb->udata);
va_start(ev.ap, fmt);
cb->fn(&ev);
va_end(ev.ap);
}
}
unlock();
}

49
src/log.h
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@@ -1,49 +0,0 @@
/**
* Copyright (c) 2020 rxi
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the MIT license. See `log.c` for details.
*/
#ifndef LOG_H
#define LOG_H
#include <stdio.h>
#include <stdarg.h>
#include <stdbool.h>
#include <time.h>
#define LOG_VERSION "0.1.0"
typedef struct {
va_list ap;
const char *fmt;
const char *file;
struct tm *time;
void *udata;
int line;
int level;
} log_Event;
typedef void (*log_LogFn)(log_Event *ev);
typedef void (*log_LockFn)(bool lock, void *udata);
enum { LOG_TRACE, LOG_DEBUG, LOG_INFO, LOG_WARN, LOG_ERROR, LOG_FATAL };
#define log_trace(...) log_log(LOG_TRACE, __FILE__, __LINE__, __VA_ARGS__)
#define log_debug(...) log_log(LOG_DEBUG, __FILE__, __LINE__, __VA_ARGS__)
#define log_info(...) log_log(LOG_INFO, __FILE__, __LINE__, __VA_ARGS__)
#define log_warn(...) log_log(LOG_WARN, __FILE__, __LINE__, __VA_ARGS__)
#define log_error(...) log_log(LOG_ERROR, __FILE__, __LINE__, __VA_ARGS__)
#define log_fatal(...) log_log(LOG_FATAL, __FILE__, __LINE__, __VA_ARGS__)
const char* log_level_string(int level);
void log_set_lock(log_LockFn fn, void *udata);
void log_set_level(int level);
void log_set_quiet(bool enable);
int log_add_callback(log_LogFn fn, void *udata, int level);
int log_add_fp(FILE *fp, int level);
void log_log(int level, const char *file, int line, const char *fmt, ...);
#endif