Init

1 files changed, 88 insertions, 0 deletions

diff --git a/log.c b/log.c
new file mode 100644
index 0000000..77b81c5
--- /dev/null
+++ b/log.c
@@ -0,0 +1,88 @@
+/*
+ * 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;
+  FILE *fp;
+  int level;
+  int quiet;
+} L;
+
+
+static const char *level_names[] = {
+  "TRACE", "DEBUG", "INFO", "WARN", "ERROR", "FATAL"
+};
+
+static const char *level_colors[] = {
+  "\x1b[94m", "\x1b[36m", "\x1b[32m", "\x1b[33m", "\x1b[31m", "\x1b[35m"
+};
+
+
+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;
+    }
+
+    /* 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';
+
+        fprintf(
+        stderr, "%s %s%-5s\x1b[0m \x1b[96m%s:%d:\x1b[0m ",
+        buf, level_colors[level], level_names[level], file, line);
+
+        va_start(args, fmt);
+        vfprintf(stderr, fmt, args);
+        va_end(args);
+        fprintf(stderr, "\n");
+        fflush(stderr);
+    }
+}
\ No newline at end of file