Allow specifying the precision when printing integers, e.g.
efi_st_printf("%.4u-%.2u-%.2u\n", year, month, day);
Signed-off-by: Heinrich Schuchardt xypron.glpk@gmx.de --- lib/efi_selftest/efi_selftest_console.c | 33 ++++++++++++++++--------- 1 file changed, 22 insertions(+), 11 deletions(-)
diff --git a/lib/efi_selftest/efi_selftest_console.c b/lib/efi_selftest/efi_selftest_console.c index c3655a1fcc..eb139c127c 100644 --- a/lib/efi_selftest/efi_selftest_console.c +++ b/lib/efi_selftest/efi_selftest_console.c @@ -70,11 +70,12 @@ static void pointer(void *pointer, u16 **buf) /* * Print an unsigned 32bit value as decimal number to an u16 string * - * @value: value to be printed - * @buf: pointer to buffer address - * on return position of terminating zero word + * @value: value to be printed + * @prec: minimum number of digits to display + * @buf: pointer to buffer address + * on return position of terminating zero word */ -static void uint2dec(u32 value, u16 **buf) +static void uint2dec(u32 value, int prec, u16 **buf) { u16 *pos = *buf; int i; @@ -93,7 +94,7 @@ static void uint2dec(u32 value, u16 **buf) for (i = 0; i < 10; ++i) { /* Write current digit */ c = f >> 60; - if (c || pos != *buf) + if (c || pos != *buf || 10 - i <= prec) *pos++ = c + '0'; /* Eliminate current digit */ f &= 0xfffffffffffffff; @@ -109,11 +110,12 @@ static void uint2dec(u32 value, u16 **buf) /* * Print a signed 32bit value as decimal number to an u16 string * - * @value: value to be printed - * @buf: pointer to buffer address + * @value: value to be printed + * @prec: minimum number of digits to display + * @buf: pointer to buffer address * on return position of terminating zero word */ -static void int2dec(s32 value, u16 **buf) +static void int2dec(s32 value, int prec, u16 **buf) { u32 u; u16 *pos = *buf; @@ -124,7 +126,7 @@ static void int2dec(s32 value, u16 **buf) } else { u = value; } - uint2dec(u, &pos); + uint2dec(u, prec, &pos); *buf = pos; }
@@ -143,6 +145,7 @@ void efi_st_printc(int color, const char *fmt, ...) u16 *pos = buf; const char *s; u16 *u; + int prec;
va_start(args, fmt);
@@ -172,12 +175,20 @@ void efi_st_printc(int color, const char *fmt, ...) break; case '%': ++c; + /* Parse precision */ + if (*c == '.') { + ++c; + prec = *c - '0'; + ++c; + } else { + prec = 0; + } switch (*c) { case '\0': --c; break; case 'd': - int2dec(va_arg(args, s32), &pos); + int2dec(va_arg(args, s32), prec, &pos); break; case 'p': ++c; @@ -209,7 +220,7 @@ void efi_st_printc(int color, const char *fmt, ...) *pos++ = *s; break; case 'u': - uint2dec(va_arg(args, u32), &pos); + uint2dec(va_arg(args, u32), prec, &pos); break; default: break;