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[monojob] Display job status message, if present 

Signed-off-by: Michael Brown <mcb30@ipxe.org>
pull/66/head
Michael Brown 2017-09-05 22:53:10 +01:00
parent a258b0897b
commit 4674df25ef
1 changed files with 25 additions and 9 deletions
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34
src/core/monojob.c
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@ -55,6 +55,22 @@ static struct interface_descriptor monojob_intf_desc =
struct interface monojob = INTF_INIT ( monojob_intf_desc ); struct interface monojob = INTF_INIT ( monojob_intf_desc );
/**
* Clear previously displayed message
*
* @v len Length of previously displayed message
*/
static void monojob_clear ( size_t len ) {
unsigned int i;
for ( i = 0 ; i < len ; i++ )
putchar ( '\b' );
for ( i = 0 ; i < len ; i++ )
putchar ( ' ' );
for ( i = 0 ; i < len ; i++ )
putchar ( '\b' );
}
/** /**
* Wait for single foreground job to complete * Wait for single foreground job to complete
* *
@ -73,7 +89,7 @@ int monojob_wait ( const char *string, unsigned long timeout ) {
unsigned long scaled_completed; unsigned long scaled_completed;
unsigned long scaled_total; unsigned long scaled_total;
unsigned int percentage; unsigned int percentage;
int shown_percentage = 0; size_t clear_len = 0;
int ongoing_rc; int ongoing_rc;
int key; int key;
int rc; int rc;
@ -123,19 +139,21 @@ int monojob_wait ( const char *string, unsigned long timeout ) {
/* Display progress, if applicable */ /* Display progress, if applicable */
elapsed = ( now - last_display ); elapsed = ( now - last_display );
if ( string && ( elapsed >= TICKS_PER_SEC ) ) { if ( string && ( elapsed >= TICKS_PER_SEC ) ) {
if ( shown_percentage ) monojob_clear ( clear_len );
printf ( "\b\b\b\b \b\b\b\b" );
/* Normalise progress figures to avoid overflow */ /* Normalise progress figures to avoid overflow */
scaled_completed = ( progress.completed / 128 ); scaled_completed = ( progress.completed / 128 );
scaled_total = ( progress.total / 128 ); scaled_total = ( progress.total / 128 );
if ( scaled_total ) { if ( scaled_total ) {
percentage = ( ( 100 * scaled_completed ) / percentage = ( ( 100 * scaled_completed ) /
scaled_total ); scaled_total );
printf ( "%3d%%", percentage ); clear_len = printf ( "%3d%%", percentage );
shown_percentage = 1;
} else { } else {
printf ( "." ); printf ( "." );
shown_percentage = 0; clear_len = 0;
}
if ( progress.message[0] ) {
clear_len += printf ( " [%s]",
progress.message );
} }
last_display = now; last_display = now;
} }
@ -143,9 +161,7 @@ int monojob_wait ( const char *string, unsigned long timeout ) {
rc = monojob_rc; rc = monojob_rc;
monojob_close ( &monojob, rc ); monojob_close ( &monojob, rc );
if ( shown_percentage ) monojob_clear ( clear_len );
printf ( "\b\b\b\b \b\b\b\b" );
if ( string ) { if ( string ) {
if ( rc ) { if ( rc ) {
printf ( " %s\n", strerror ( rc ) ); printf ( " %s\n", strerror ( rc ) );