RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-05-14 09:34:59 +00:00
Code Issues Activity Actions

AK: Implement printf fraction length specification for strings

Browse source 
This adds support for '%.20s' and friends :^)
This commit is contained in:
AnotherTest 2021-02-02 00:23:03 +03:30 • committed by Linus Groh
parent 9f970c3459
commit ba6c9423b8
1 changed files with 11 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

15
AK/PrintfImplementation.h
View file

@ -233,10 +233,17 @@ ALWAYS_INLINE int print_octal_number(PutChFunc putch, char*& bufptr, u32 number,
}
template<typename PutChFunc>
ALWAYS_INLINE int print_string(PutChFunc putch, char*& bufptr, const char* str, size_t len, bool left_pad, size_t field_width, bool dot)
ALWAYS_INLINE int print_string(PutChFunc putch, char*& bufptr, const char* str, size_t len, bool left_pad, size_t field_width, bool dot, size_t fraction_length, bool has_fraction)
{
if (has_fraction)
len = min(len, fraction_length);
if (!dot && (!field_width || field_width < len))
field_width = len;
if (has_fraction && !field_width)
field_width = len;
size_t pad_amount = field_width > len ? field_width - len : 0;
if (!left_pad) {
@ -292,7 +299,7 @@ struct PrintfImpl {
const char* sp = NextArgument<const char*>()(ap);
if (!sp)
sp = "(null)";
return print_string(m_putch, m_bufptr, sp, strlen(sp), state.left_pad, state.field_width, state.dot);
return print_string(m_putch, m_bufptr, sp, strlen(sp), state.left_pad, state.field_width, state.dot, state.fraction_length, state.has_fraction_length);
}
ALWAYS_INLINE int format_d(const ModifierState& state, ArgumentListRefT ap) const
{
@ -367,7 +374,7 @@ struct PrintfImpl {
ALWAYS_INLINE int format_c(const ModifierState& state, ArgumentListRefT ap) const
{
char c = NextArgument<int>()(ap);
return print_string(m_putch, m_bufptr, &c, 1, state.left_pad, state.field_width, state.dot);
return print_string(m_putch, m_bufptr, &c, 1, state.left_pad, state.field_width, state.dot, state.fraction_length, state.has_fraction_length);
}
ALWAYS_INLINE int format_unrecognized(char format_op, const char* fmt, const ModifierState&, ArgumentListRefT) const
{
@ -422,7 +429,7 @@ ALWAYS_INLINE int printf_internal(PutChFunc putch, char* buffer, const char*& fm
if (*(p + 1))
goto one_more;
}
if (!state.zero_pad && !state.field_width && *p == '0') {
if (!state.zero_pad && !state.field_width && !state.has_fraction_length && *p == '0') {
state.zero_pad = true;
if (*(p + 1))
goto one_more;