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bdk: sprintf: add right padding support

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This commit is contained in:
CTCaer 2024-04-25 04:56:38 +03:00
parent 77782b974c
commit 856994e4f4
2 changed files with 66 additions and 7 deletions
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53
bdk/utils/sprintf.c
View file

@ -28,10 +28,32 @@ static void _s_putc(char c)
*sout_buf += 1;
}
static void _s_puts(char *s)
static void _s_putspace(int fcnt)
{
if (fcnt <= 0)
return;
for (int i = 0; i < fcnt; i++)
_s_putc(' ');
}
static void _s_puts(char *s, char fill, int fcnt)
{
if (fcnt)
{
fcnt = fcnt - strlen(s);
// Left padding. Check if padding is not space based (dot counts as such).
if (fill != '.')
_s_putspace(fcnt);
}
for (; *s; s++)
_s_putc(*s);
// Right padding. Check if padding is space based (dot counts as such).
if (fill == '.')
_s_putspace(fcnt);
}
static void _s_putn(u32 v, int base, char fill, int fcnt)
@ -75,9 +97,28 @@ static void _s_putn(u32 v, int base, char fill, int fcnt)
}
}
_s_puts(p);
_s_puts(p, 0, 0);
}
/*
* Padding:
* Numbers:
* %3d: Fill: ' ', Count: 3.
* % 3d: Fill: ' ', Count: 3.
* %.3d: Fill: '.', Count: 3.
* %23d: Fill: '2', Count: 3.
* % 23d: Fill: ' ', Count: 23.
* %223d: Fill: '2', Count: 23.
*
* Strings, Fill: ' ':
* %3s: Count: 5, Left.
* %23s: Count: 5, Left.
* %223s: Count: 25, Left.
* %.3s: Count: 5, Right.
* %.23s: Count: 25, Right.
* %.223s: Count: 225, Right.
*/
void s_printf(char *out_buf, const char *fmt, ...)
{
va_list ap;
@ -94,8 +135,8 @@ void s_printf(char *out_buf, const char *fmt, ...)
fill = 0;
fcnt = 0;
// Check for padding. Number or space based.
if ((*fmt >= '0' && *fmt <= '9') || *fmt == ' ')
// Check for padding. Number or space based (dot count as space for string).
if ((*fmt >= '0' && *fmt <= '9') || *fmt == ' ' || *fmt == '.')
{
fcnt = *fmt; // Padding size or padding type.
fmt++;
@ -132,7 +173,7 @@ parse_padding_dec:
break;
case 's':
_s_puts(va_arg(ap, char *));
_s_puts(va_arg(ap, char *), fill, fcnt);
break;
case 'd':
@ -221,7 +262,7 @@ parse_padding_dec:
break;
case 's':
_s_puts(va_arg(ap, char *));
_s_puts(va_arg(ap, char *), fill, fcnt);
break;
case 'd':

18
bdk/utils/sprintf.h
View file

@ -21,6 +21,24 @@
#include <utils/types.h>
/*
* Padding:
* Numbers:
* %3d: Fill: ' ', Count: 3.
* % 3d: Fill: ' ', Count: 3.
* %23d: Fill: '2', Count: 3.
* % 23d: Fill: ' ', Count: 23.
* %223d: Fill: '2', Count: 23.
*
* Strings, Fill: ' ':
* %3s: Count: 5, Left.
* %23s: Count: 5, Left.
* %223s: Count: 25, Left.
* %.3s: Count: 5, Right.
* %.23s: Count: 25, Right.
* %.223s: Count: 225, Right.
*/
void s_printf(char *out_buf, const char *fmt, ...) __attribute__((format(printf, 2, 3)));
void s_vprintf(char *out_buf, const char *fmt, va_list ap);