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[debug] Allow debug colourisation to be disabled

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Some BIOS console redirection capabilities do not work well with the
colourised debug messages used by iPXE.  We already allow the range of
colours to be controlled via the DBGCOL=... build parameter.  Extend
this syntax to allow DBGCOL=0 to be used to mean "disable colours".

Requested-by: Wissam Shoukair <wissams@mellanox.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2016-01-12 15:35:06 +00:00
parent 83c8f2e8e3
commit 47dcd392dc
2 changed files with 11 additions and 5 deletions
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4
src/Makefile.housekeeping
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@@ -734,8 +734,8 @@ $(DBGCOL_LIST) : $(MAKEDEPS)
VERYCLEANUP += $(DBGCOL_LIST)
DBGCOL_COLOURS := $(subst -, ,$(DBGCOL))
DBGCOL_MIN := $(word 1,$(DBGCOL_COLOURS))
DBGCOL_MAX := $(word 2,$(DBGCOL_COLOURS))
DBGCOL_MIN := $(firstword $(DBGCOL_COLOURS))
DBGCOL_MAX := $(lastword $(DBGCOL_COLOURS))
debug_DEPS += $(DBGCOL_LIST)

12
src/core/debug.c
View File

@@ -194,8 +194,12 @@ static int dbg_autocolour ( unsigned long stream ) {
* @v stream Message stream ID
*/
void dbg_autocolourise ( unsigned long stream ) {
dbg_printf ( "\033[%dm",
( stream ? ( DBGCOL_MIN + dbg_autocolour ( stream ) ) :0));
if ( DBGCOL_MIN ) {
dbg_printf ( "\033[%dm",
( stream ?
( DBGCOL_MIN + dbg_autocolour ( stream ) ) : 0));
}
}
/**
@@ -203,5 +207,7 @@ void dbg_autocolourise ( unsigned long stream ) {
*
*/
void dbg_decolourise ( void ) {
dbg_printf ( "\033[0m" );
if ( DBGCOL_MIN )
dbg_printf ( "\033[0m" );
}