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Add %p and %% to cstyle_format

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apio 2022-11-19 15:26:29 +01:00
parent 88af7a915b
commit bad856afe0
1 changed files with 26 additions and 1 deletions
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27
luna/Format.h
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@ -10,7 +10,7 @@ typedef int (*callback_t)(char, void*);
extern "C" usize strlen(const char*);
typedef usize flags_t;
typedef int flags_t;
#define FLAG_ZERO_PAD 1 << 0
#define FLAG_LEFT_ALIGN 1 << 1
#define FLAG_BLANK_SIGNED 1 << 2
@ -224,6 +224,7 @@ static int output_integer(char specifier, conv_state& vstate, format_state& stat
switch (specifier)
{
case 'p':
case 'x':
case 'X': base = 16; break;
case 'o': base = 8; break;
@ -291,6 +292,8 @@ static int va_output_integer(char specifier, conv_state& vstate, format_state& s
if (specifier == 'd' || specifier == 'i') is_signed = true;
if (!is_signed) vstate.flags &= ~(FLAG_SIGN | FLAG_BLANK_SIGNED);
if (vstate.flags & FLAG_CHAR)
{
if (is_signed)
@ -404,6 +407,12 @@ isize cstyle_format(const char* format, callback_t callback, void* arg, va_list
format++;
if (*format == '%')
{
TRY_PUTCHAR('%', state);
continue;
}
// %[flags][width][.precision][length]conversion
flags_t flags = parse_flags(&format);
@ -419,6 +428,22 @@ isize cstyle_format(const char* format, callback_t callback, void* arg, va_list
if (is_integer_format_specifier(specifier))
{
if (va_output_integer(specifier, vstate, state, ap)) return -1;
continue;
}
else if (specifier == 'p')
{
void* ptr = va_arg(ap, void*);
if (ptr == nullptr)
{
TRY_START_PAD(vstate, state, 5);
TRY_PUTS("(nil)", state);
TRY_END_PAD(vstate, state, 5);
continue;
}
vstate.width = (sizeof(void*) * 2) + 2;
vstate.flags |= (FLAG_ZERO_PAD | FLAG_ALTERNATE);
if (output_integer('p', vstate, state, (usize)ptr, false)) return -1;
continue;
}
else if (specifier == 'c')
{