Add pn_log

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>

3 files changed, 81 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index 9ff8bf1..25ad68c 100644
--- a/Makefile
+++ b/Makefile
@@ -3,6 +3,8 @@ CC := gcc
 CFLAGS := -O2 -ggdb -Wall -Wextra -Wno-unused-parameter -ansi -std=c99
 LDFLAGS := -Wl,--no-undefined
 
+override CFLAGS += -D_GNU_SOURCE
+
 GIO_CFLAGS := $(shell pkg-config --cflags gio-2.0)
 GIO_LIBS := -lgio-2.0 -lgobject-2.0 -lglib-2.0
 
@@ -15,7 +17,8 @@ QUIET_LINK  = @echo '   LINK       '$@;
 QUIET_CLEAN = @echo '   CLEAN      '$@;
 endif
 
-test: test.o pn_core.o pn_session.o pn_node.o
+test: test.o pn_core.o pn_session.o pn_node.o \
+	pn_log.o
 test: override CFLAGS += $(GIO_CFLAGS)
 test: override LIBS += $(GIO_LIBS)
 
diff --git a/pn_log.c b/pn_log.c
new file mode 100644
index 0000000..1463efc
--- /dev/null
+++ b/pn_log.c
@@ -0,0 +1,52 @@
+#include "pn_log.h"
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <glib.h>
+
+static inline char log_level_to_char(unsigned level)
+{
+	switch (level) {
+	case 0: return 'E';
+	case 1: return 'W';
+	case 2: return 'T';
+	case 3: return 'I';
+	case 4: return 'D';
+	default: return 'O';
+	}
+}
+
+void _pn_helper(unsigned level,
+		void *object,
+		const char *file,
+		const char *function,
+		unsigned line,
+		const char *fmt,
+		...)
+{
+	char *tmp;
+	va_list args;
+	char l = log_level_to_char(level);
+
+	va_start(args, fmt);
+
+	vasprintf(&tmp, fmt, args);
+
+	if (level <= 1)
+		fprintf(stdout, "%c: %s: %s\n", l, function, tmp);
+	else if (level == 2)
+		fprintf(stdout, "%c: %s:%s(%u): %s\n", l, file, function, line, tmp);
+	else if (level == 3)
+		fprintf(stdout, "%c: %s: %s\n", l, function, tmp);
+#if defined(DEBUG)
+	else if (level == 4)
+		fprintf(stdout, "%c: %s:%s(%u): %s\n", l, file, function, line, tmp);
+#endif
+	fflush(stdout);
+
+	free(tmp);
+
+	va_end(args);
+}
diff --git a/pn_log.h b/pn_log.h
new file mode 100644
index 0000000..7315b29
--- /dev/null
+++ b/pn_log.h
@@ -0,0 +1,25 @@
+#ifndef PN_LOG_H
+#define PN_LOG_H
+
+void _pn_helper(unsigned level,
+		void *object,
+		const char *file,
+		const char *function,
+		unsigned line,
+		const char *fmt,
+		...) __attribute__((format(printf, 6, 7)));
+
+#define pn_base(level, object, ...) _pn_helper(level, object, __FILE__, __func__, __LINE__, __VA_ARGS__)
+
+#define pn_err(object, ...) pn_base(0, object, __VA_ARGS__)
+#define pn_warn(object, ...) pn_base(1, object, __VA_ARGS__)
+#define pn_test(object, ...) pn_base(2, object, __VA_ARGS__)
+#define pn_info(object, ...) pn_base(3, object, __VA_ARGS__)
+
+#if defined(DEBUG)
+#define pn_debug(object, ...) pn_base(4, object, __VA_ARGS__)
+#else
+#define pn_debug(object, ...) ({ if (0) pn_base(4, object, __VA_ARGS__); })
+#endif
+
+#endif /* PN_LOG_H */