Initial commit.

Signed-off-by: Toni Uhlig <matzeton@googlemail.com>

1 files changed, 44 insertions, 0 deletions

diff --git a/src/log.h b/src/log.h
new file mode 100644
index 0000000..3363395
--- /dev/null
+++ b/src/log.h
@@ -0,0 +1,44 @@
+#ifndef POTD_LOG_H
+#define POTD_LOG_H 1
+
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+#define LOGMSG_MAXLEN 255
+#define LOG_SET_FUNCS(open_cb, close_cb, fmt_cb, fmtex_cb) \
+    { \
+        log_open = open_cb; log_close = close_cb; \
+        log_fmt = fmt_cb; log_fmtex = fmtex_cb; \
+    }
+#define LOG_SET_FUNCS_VA(...) LOG_SET_FUNCS(__VA_ARGS__)
+#define D(fmt, ...) log_fmt(DEBUG, fmt, __VA_ARGS__)
+#define N(fmt, ...) log_fmt(NOTICE, fmt, __VA_ARGS__)
+#define W(fmt, ...) log_fmt(WARNING, fmt, __VA_ARGS__)
+#define E(fmt, ...) log_fmt(ERROR, fmt, __VA_ARGS__)
+#define D2(fmt, ...) log_fmtex(DEBUG, __FILE__, __LINE__, fmt, __VA_ARGS__)
+#define N2(fmt, ...) log_fmtex(NOTICE, __FILE__, __LINE__, fmt, __VA_ARGS__)
+#define W2(fmt, ...) log_fmtex(WARNING, __FILE__, __LINE__, fmt, __VA_ARGS__)
+#define E2(fmt, ...) log_fmtex(ERROR, __FILE__, __LINE__, fmt, __VA_ARGS__)
+#define W_STRERR(msg) { if (errno) W2("%s failed: %s", msg, strerror(errno)); }
+#define E_STRERR(msg) { if (errno) E2("%s failed: %s", msg, strerror(errno)); }
+#define ABORT_ON_FATAL(expr, msg) \
+    { errno = 0; if (expr) { E_STRERR(msg); abort(); } }
+
+typedef enum log_priority {
+    DEBUG = 0, NOTICE, WARNING, ERROR
+} log_priority;
+
+typedef int (*log_open_cb) (void);
+typedef void (*log_close_cb) (void);
+typedef void (*log_fmt_cb) (log_priority prio, const char *fmt, ...);
+typedef void (*log_fmtex_cb) (log_priority prio, const char *srcfile,
+                              size_t line, const char *fmt, ...);
+
+
+extern log_open_cb log_open;
+extern log_close_cb log_close;
+extern log_fmt_cb log_fmt;
+extern log_fmtex_cb log_fmtex;
+
+#endif