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compel/log: Provide %u specifier parsing

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%u is quite common and I remember there were workarounds to print
(unsigned long) as long or whatever.
Just support it from now - it's not hard and not much code.

Signed-off-by: Dmitry Safonov <dima@arista.com>
This commit is contained in:
Dmitry Safonov 2020-11-12 00:26:11 +00:00 • committed by Andrei Vagin
parent c39ed518f0
commit b28eb7b2d1
1 changed files with 22 additions and 0 deletions
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22
compel/plugins/std/log.c
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@ -225,6 +225,22 @@ done:
print_string(s, b);
}
static void print_num_u(unsigned long num, struct simple_buf *b)
{
char buf[22], *s;
buf[21] = '\0';
s = &buf[21];
do {
s--;
*s = (num % 10) + '0';
num /= 10;
} while (num > 0);
print_string(s, b);
}
static void hexdigit(unsigned int v, char *to, char **z)
{
*to = "0123456789abcdef"[v & 0xf];
@ -329,6 +345,12 @@ static void sbuf_printf(struct simple_buf *b, const char *format, va_list args)
case 'p':
print_hex_l((unsigned long)va_arg(args, void *), b);
break;
case 'u':
if (along)
print_num_u(va_arg(args, unsigned long), b);
else
print_num_u(va_arg(args, unsigned), b);
break;
default:
print_string("\nError: Unknown printf format %", b);
sbuf_putc(b, *s);