Initial commit

rxi/log/LICENSE

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+Copyright (c) 2017 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.

rxi/log/src/log.c

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+/*
+ * Copyright (c) 2017 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 <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <time.h>
+
+#include "log.h"
+
+static struct {
+  void *udata;
+  log_LockFn lock;
+  FILE *fp;
+  int level;
+  int quiet;
+} L;
+
+
+static const char *level_names[] = {
+  "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 lock(void)   {
+  if (L.lock) {
+    L.lock(L.udata, 1);
+  }
+}
+
+
+static void unlock(void) {
+  if (L.lock) {
+    L.lock(L.udata, 0);
+  }
+}
+
+
+void log_set_udata(void *udata) {
+  L.udata = udata;
+}
+
+
+void log_set_lock(log_LockFn fn) {
+  L.lock = fn;
+}
+
+
+void log_set_fp(FILE *fp) {
+  L.fp = fp;
+}
+
+
+void log_set_level(int level) {
+  L.level = level;
+}
+
+
+void log_set_quiet(int enable) {
+  L.quiet = enable ? 1 : 0;
+}
+
+
+void log_log(int level, const char *file, int line, const char *fmt, ...) {
+  if (level < L.level) {
+    return;
+  }
+
+  /* Acquire lock */
+  lock();
+
+  /* Get current time */
+  time_t t = time(NULL);
+  struct tm *lt = localtime(&t);
+
+  /* Log to stderr */
+  if (!L.quiet) {
+    va_list args;
+    char buf[16];
+    buf[strftime(buf, sizeof(buf), "%H:%M:%S", lt)] = '\0';
+#ifdef LOG_USE_COLOR
+    fprintf(
+      stderr, "%s %s%-5s\x1b[0m \x1b[90m%s:%d:\x1b[0m ",
+      buf, level_colors[level], level_names[level], file, line);
+#else
+    fprintf(stderr, "%s %-5s %s:%d: ", buf, level_names[level], file, line);
+#endif
+    va_start(args, fmt);
+    vfprintf(stderr, fmt, args);
+    va_end(args);
+    fprintf(stderr, "\n");
+    fflush(stderr);
+  }
+
+  /* Log to file */
+  if (L.fp) {
+    va_list args;
+    char buf[32];
+    buf[strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", lt)] = '\0';
+    fprintf(L.fp, "%s %-5s %s:%d: ", buf, level_names[level], file, line);
+    va_start(args, fmt);
+    vfprintf(L.fp, fmt, args);
+    va_end(args);
+    fprintf(L.fp, "\n");
+    fflush(L.fp);
+  }
+
+  /* Release lock */
+  unlock();
+}

rxi/log/src/log.h

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+/**
+ * Copyright (c) 2017 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>
+
+#define LOG_VERSION "0.1.0"
+
+typedef void (*log_LockFn)(void *udata, int lock);
+
+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__)
+
+void log_set_udata(void *udata);
+void log_set_lock(log_LockFn fn);
+void log_set_fp(FILE *fp);
+void log_set_level(int level);
+void log_set_quiet(int enable);
+
+void log_log(int level, const char *file, int line, const char *fmt, ...);
+
+#endif