logging: Extend log_target with call-back for un-formatted log line
Some targets might not want to receive only an opaque, pre-formatted
string, but rather the unformatted arguments with metadata like
sub-system/level/file/line. We solve this by introducing a
log_target->output_raw() function pointer. If a target specifies this
function, it takes precedence over the regular log_target->output()
function.
Change-Id: I9dc9205d70dce9581458e7e9dc2d8a92991897bd
diff --git a/src/logging.c b/src/logging.c
index 9e30d5f..165d822 100644
--- a/src/logging.c
+++ b/src/logging.c
@@ -385,7 +385,10 @@
* in undefined state. Since _output uses vsnprintf and it may
* be called several times, we have to pass a copy of ap. */
va_copy(bp, ap);
- _output(tar, subsys, level, file, line, cont, format, bp);
+ if (tar->raw_output)
+ tar->raw_output(tar, subsys, level, file, line, cont, format, bp);
+ else
+ _output(tar, subsys, level, file, line, cont, format, bp);
va_end(bp);
}
}