mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-22 15:40:19 +00:00
27f699ef0c
These types can be picked up by including <AK/Types.h>: * u8, u16, u32, u64 (unsigned) * i8, i16, i32, i64 (signed)
318 lines
8.6 KiB
C++
318 lines
8.6 KiB
C++
#pragma once
|
|
|
|
#include <AK/Types.h>
|
|
#include <stdarg.h>
|
|
|
|
static constexpr const char* printf_hex_digits = "0123456789abcdef";
|
|
|
|
#ifdef __serenity__
|
|
extern "C" size_t strlen(const char*);
|
|
#else
|
|
#include <string.h>
|
|
#endif
|
|
|
|
template<typename PutChFunc, typename T>
|
|
[[gnu::always_inline]] inline int print_hex(PutChFunc putch, char*& bufptr, T number, u8 fields)
|
|
{
|
|
int ret = 0;
|
|
u8 shr_count = fields * 4;
|
|
while (shr_count) {
|
|
shr_count -= 4;
|
|
putch(bufptr, printf_hex_digits[(number >> shr_count) & 0x0F]);
|
|
++ret;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
template<typename PutChFunc>
|
|
[[gnu::always_inline]] inline int print_number(PutChFunc putch, char*& bufptr, u32 number, bool leftPad, bool zeroPad, u32 fieldWidth)
|
|
{
|
|
u32 divisor = 1000000000;
|
|
char ch;
|
|
char padding = 1;
|
|
char buf[16];
|
|
char* p = buf;
|
|
|
|
for (;;) {
|
|
ch = '0' + (number / divisor);
|
|
number %= divisor;
|
|
if (ch != '0')
|
|
padding = 0;
|
|
if (!padding || divisor == 1)
|
|
*(p++) = ch;
|
|
if (divisor == 1)
|
|
break;
|
|
divisor /= 10;
|
|
}
|
|
|
|
size_t numlen = p - buf;
|
|
if (!fieldWidth || fieldWidth < numlen)
|
|
fieldWidth = numlen;
|
|
if (!leftPad) {
|
|
for (unsigned i = 0; i < fieldWidth - numlen; ++i) {
|
|
putch(bufptr, zeroPad ? '0' : ' ');
|
|
}
|
|
}
|
|
for (unsigned i = 0; i < numlen; ++i) {
|
|
putch(bufptr, buf[i]);
|
|
}
|
|
if (leftPad) {
|
|
for (unsigned i = 0; i < fieldWidth - numlen; ++i) {
|
|
putch(bufptr, ' ');
|
|
}
|
|
}
|
|
|
|
return fieldWidth;
|
|
}
|
|
|
|
template<typename PutChFunc>
|
|
[[gnu::always_inline]] inline int print_u64(PutChFunc putch, char*& bufptr, u64 number, bool leftPad, bool zeroPad, u32 fieldWidth)
|
|
{
|
|
u64 divisor = 10000000000000000000LLU;
|
|
char ch;
|
|
char padding = 1;
|
|
char buf[16];
|
|
char* p = buf;
|
|
|
|
for (;;) {
|
|
ch = '0' + (number / divisor);
|
|
number %= divisor;
|
|
if (ch != '0')
|
|
padding = 0;
|
|
if (!padding || divisor == 1)
|
|
*(p++) = ch;
|
|
if (divisor == 1)
|
|
break;
|
|
divisor /= 10;
|
|
}
|
|
|
|
size_t numlen = p - buf;
|
|
if (!fieldWidth || fieldWidth < numlen)
|
|
fieldWidth = numlen;
|
|
if (!leftPad) {
|
|
for (unsigned i = 0; i < fieldWidth - numlen; ++i) {
|
|
putch(bufptr, zeroPad ? '0' : ' ');
|
|
}
|
|
}
|
|
for (unsigned i = 0; i < numlen; ++i) {
|
|
putch(bufptr, buf[i]);
|
|
}
|
|
if (leftPad) {
|
|
for (unsigned i = 0; i < fieldWidth - numlen; ++i) {
|
|
putch(bufptr, ' ');
|
|
}
|
|
}
|
|
|
|
return fieldWidth;
|
|
}
|
|
|
|
template<typename PutChFunc>
|
|
[[gnu::always_inline]] inline int print_i64(PutChFunc putch, char*& bufptr, i64 number, bool leftPad, bool zeroPad, u32 fieldWidth)
|
|
{
|
|
if (number < 0) {
|
|
putch(bufptr, '-');
|
|
return print_u64(putch, bufptr, 0 - number, leftPad, zeroPad, fieldWidth) + 1;
|
|
}
|
|
return print_u64(putch, bufptr, number, leftPad, zeroPad, fieldWidth);
|
|
}
|
|
|
|
template<typename PutChFunc>
|
|
[[gnu::always_inline]] inline int print_octal_number(PutChFunc putch, char*& bufptr, u32 number, bool leftPad, bool zeroPad, u32 fieldWidth)
|
|
{
|
|
u32 divisor = 134217728;
|
|
char ch;
|
|
char padding = 1;
|
|
char buf[32];
|
|
char* p = buf;
|
|
|
|
for (;;) {
|
|
ch = '0' + (number / divisor);
|
|
number %= divisor;
|
|
if (ch != '0')
|
|
padding = 0;
|
|
if (!padding || divisor == 1)
|
|
*(p++) = ch;
|
|
if (divisor == 1)
|
|
break;
|
|
divisor /= 8;
|
|
}
|
|
|
|
size_t numlen = p - buf;
|
|
if (!fieldWidth || fieldWidth < numlen)
|
|
fieldWidth = numlen;
|
|
if (!leftPad) {
|
|
for (unsigned i = 0; i < fieldWidth - numlen; ++i) {
|
|
putch(bufptr, zeroPad ? '0' : ' ');
|
|
}
|
|
}
|
|
for (unsigned i = 0; i < numlen; ++i) {
|
|
putch(bufptr, buf[i]);
|
|
}
|
|
if (leftPad) {
|
|
for (unsigned i = 0; i < fieldWidth - numlen; ++i) {
|
|
putch(bufptr, ' ');
|
|
}
|
|
}
|
|
|
|
return fieldWidth;
|
|
}
|
|
|
|
template<typename PutChFunc>
|
|
[[gnu::always_inline]] inline int print_string(PutChFunc putch, char*& bufptr, const char* str, bool leftPad, u32 fieldWidth)
|
|
{
|
|
size_t len = strlen(str);
|
|
if (!fieldWidth || fieldWidth < len)
|
|
fieldWidth = len;
|
|
if (!leftPad) {
|
|
for (unsigned i = 0; i < fieldWidth - len; ++i)
|
|
putch(bufptr, ' ');
|
|
}
|
|
for (unsigned i = 0; i < len; ++i) {
|
|
putch(bufptr, str[i]);
|
|
}
|
|
if (leftPad) {
|
|
for (unsigned i = 0; i < fieldWidth - len; ++i)
|
|
putch(bufptr, ' ');
|
|
}
|
|
return fieldWidth;
|
|
}
|
|
|
|
template<typename PutChFunc>
|
|
[[gnu::always_inline]] inline int print_signed_number(PutChFunc putch, char*& bufptr, int number, bool leftPad, bool zeroPad, u32 fieldWidth)
|
|
{
|
|
if (number < 0) {
|
|
putch(bufptr, '-');
|
|
return print_number(putch, bufptr, 0 - number, leftPad, zeroPad, fieldWidth) + 1;
|
|
}
|
|
return print_number(putch, bufptr, number, leftPad, zeroPad, fieldWidth);
|
|
}
|
|
|
|
template<typename PutChFunc>
|
|
[[gnu::always_inline]] inline int printf_internal(PutChFunc putch, char* buffer, const char*& fmt, va_list ap)
|
|
{
|
|
const char* p;
|
|
|
|
int ret = 0;
|
|
char* bufptr = buffer;
|
|
|
|
for (p = fmt; *p; ++p) {
|
|
bool left_pad = false;
|
|
bool zeroPad = false;
|
|
unsigned fieldWidth = 0;
|
|
unsigned long_qualifiers = 0;
|
|
bool size_qualifier = false;
|
|
(void)size_qualifier;
|
|
bool alternate_form = 0;
|
|
if (*p == '%' && *(p + 1)) {
|
|
one_more:
|
|
++p;
|
|
if (*p == '-') {
|
|
left_pad = true;
|
|
if (*(p + 1))
|
|
goto one_more;
|
|
}
|
|
if (!zeroPad && !fieldWidth && *p == '0') {
|
|
zeroPad = true;
|
|
if (*(p + 1))
|
|
goto one_more;
|
|
}
|
|
if (*p >= '0' && *p <= '9') {
|
|
fieldWidth *= 10;
|
|
fieldWidth += *p - '0';
|
|
if (*(p + 1))
|
|
goto one_more;
|
|
}
|
|
if (*p == 'l') {
|
|
++long_qualifiers;
|
|
if (*(p + 1))
|
|
goto one_more;
|
|
}
|
|
if (*p == 'z') {
|
|
size_qualifier = true;
|
|
if (*(p + 1))
|
|
goto one_more;
|
|
}
|
|
if (*p == '#') {
|
|
alternate_form = true;
|
|
if (*(p + 1))
|
|
goto one_more;
|
|
}
|
|
switch (*p) {
|
|
case 's': {
|
|
const char* sp = va_arg(ap, const char*);
|
|
ret += print_string(putch, bufptr, sp ? sp : "(null)", left_pad, fieldWidth);
|
|
} break;
|
|
|
|
case 'd':
|
|
ret += print_signed_number(putch, bufptr, va_arg(ap, int), left_pad, zeroPad, fieldWidth);
|
|
break;
|
|
|
|
case 'u':
|
|
ret += print_number(putch, bufptr, va_arg(ap, u32), left_pad, zeroPad, fieldWidth);
|
|
break;
|
|
|
|
case 'Q':
|
|
ret += print_u64(putch, bufptr, va_arg(ap, u64), left_pad, zeroPad, fieldWidth);
|
|
break;
|
|
|
|
case 'q':
|
|
ret += print_hex(putch, bufptr, va_arg(ap, u64), 16);
|
|
break;
|
|
|
|
#ifndef KERNEL
|
|
case 'g':
|
|
case 'f':
|
|
// FIXME: Print as float!
|
|
ret += print_i64(putch, bufptr, (u64)va_arg(ap, double), left_pad, zeroPad, fieldWidth);
|
|
break;
|
|
#endif
|
|
|
|
case 'o':
|
|
if (alternate_form) {
|
|
putch(bufptr, '0');
|
|
++ret;
|
|
}
|
|
ret += print_octal_number(putch, bufptr, va_arg(ap, u32), left_pad, zeroPad, fieldWidth);
|
|
break;
|
|
|
|
case 'x':
|
|
if (alternate_form) {
|
|
putch(bufptr, '0');
|
|
putch(bufptr, 'x');
|
|
ret += 2;
|
|
}
|
|
ret += print_hex(putch, bufptr, va_arg(ap, u32), 8);
|
|
break;
|
|
|
|
case 'w':
|
|
ret += print_hex(putch, bufptr, va_arg(ap, int), 4);
|
|
break;
|
|
|
|
case 'b':
|
|
ret += print_hex(putch, bufptr, va_arg(ap, int), 2);
|
|
break;
|
|
|
|
case 'c':
|
|
putch(bufptr, (char)va_arg(ap, int));
|
|
++ret;
|
|
break;
|
|
|
|
case '%':
|
|
putch(bufptr, '%');
|
|
++ret;
|
|
break;
|
|
|
|
case 'p':
|
|
putch(bufptr, '0');
|
|
putch(bufptr, 'x');
|
|
ret += 2;
|
|
ret += print_hex(putch, bufptr, va_arg(ap, u32), 8);
|
|
break;
|
|
}
|
|
} else {
|
|
putch(bufptr, *p);
|
|
++ret;
|
|
}
|
|
}
|
|
return ret;
|
|
}
|