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Implement signed integer formating

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Steins7 2024-04-15 17:04:35 +02:00
parent 3dc548332f
commit 727aadaba9
1 changed files with 18 additions and 16 deletions
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34
srv/format.c
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@ -21,9 +21,9 @@ uint32_t buffer_write(uint8_t byte, void* arg);
uint32_t render_format(FormatCallback callback, void* arg,
const char* restrict format, va_list va);
uint32_t render_signed(FormatCallback callback, void* arg,
va_list va, uint8_t size, uint8_t base);
int32_t number, uint8_t base);
uint32_t render_unsigned(FormatCallback callback, void* arg,
va_list* va, uint8_t size, uint8_t base);
uint32_t number, uint8_t base);
//--local variables-------------------------------------------------------------
@ -74,7 +74,6 @@ uint32_t buffer_write(uint8_t byte, void* arg)
uint32_t render_format(FormatCallback callback, void* arg,
const char* restrict format, va_list va)
{
uint8_t size;
bool in_format = false;
for (const char* c = format; *c != '\0'; ++c) {
@ -84,12 +83,6 @@ uint32_t render_format(FormatCallback callback, void* arg,
case '%':
callback('%', arg);
break;
case 'h':
size = size / 2;
continue;
case 'l':
size = size * 2;
continue;
case 'c':
callback((uint8_t)va_arg(va, uint32_t), arg);
break;
@ -102,13 +95,13 @@ uint32_t render_format(FormatCallback callback, void* arg,
}
break;
case 'i':
//render_signed(callback, arg, va, size, 10);
render_signed(callback, arg, va_arg(va, int32_t), 10);
break;
case 'u':
render_unsigned(callback, arg, &va, size, 10);
render_unsigned(callback, arg, va_arg(va, uint32_t), 10);
break;
case 'x':
render_unsigned(callback, arg, &va, size, 16);
render_unsigned(callback, arg, va_arg(va, uint32_t), 16);
break;
default:
//TODO manage error
@ -118,7 +111,6 @@ uint32_t render_format(FormatCallback callback, void* arg,
switch (*c) {
case '%':
in_format = true;
size = 4;
continue;
default:
callback(*c, arg);
@ -132,10 +124,20 @@ uint32_t render_format(FormatCallback callback, void* arg,
return 0;
}
uint32_t render_unsigned(FormatCallback callback, void* arg,
va_list* va, uint8_t size, uint8_t base)
uint32_t render_signed(FormatCallback callback, void* arg,
int32_t number, uint8_t base)
{
if (number < 0) {
callback('-', arg);
number = -number;
}
return render_unsigned(callback, arg, (uint32_t)number, base);
}
uint32_t render_unsigned(FormatCallback callback, void* arg,
uint32_t number, uint8_t base)
{
uint32_t number = va_arg(*va, uint32_t);
uint32_t base_power = base;
while (base_power <= number) {