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remove a variable length stack allocated array and simplify builtin printf

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ridiculousfish 2013-03-24 14:10:31 -07:00
parent 34f2f77067
commit 3b4f4c5f59
1 changed files with 9 additions and 20 deletions
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29
builtin_printf.cpp
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@ -365,22 +365,19 @@ void builtin_printf_state_t::print_direc(const wchar_t *start, size_t length, wc
bool have_precision, int precision,
wchar_t const *argument)
{
wcstring fmt;
// Start with everything except the conversion specifier
wcstring fmt(start, length);
/* Create a null-terminated copy of the % directive, with an
intmax_t-wide length modifier substituted for any existing
intmax_t-wide width modifier substituted for any existing
integer length modifier. */
{
wchar_t *q;
wchar_t const *length_modifier;
size_t length_modifier_len;
// Append the appropriate width specifier
switch (conversion)
{
case L'd':
case L'i':
length_modifier = L"lld";
length_modifier_len = sizeof L"lld" - 2;
fmt.append(L"ll");
break;
case L'a':
case L'e':
@ -390,26 +387,18 @@ void builtin_printf_state_t::print_direc(const wchar_t *start, size_t length, wc
case L'E':
case L'F':
case L'G':
length_modifier = L"L";
length_modifier_len = 1;
fmt.append(L"L");
break;
case L's':
case L'u':
length_modifier = L"l";
length_modifier_len = 1;
fmt.append(L"l");
break;
default:
length_modifier = start; /* Any valid pointer will do. */
length_modifier_len = 0;
break;
}
wchar_t p[length + length_modifier_len + 2]; /* Null-terminated copy of % directive. */
q = wmemcpy(p, start, length) + length;
q = wmemcpy(q, length_modifier, length_modifier_len) + length_modifier_len;
*q++ = conversion;
*q = L'\0';
fmt = p;
// Append the conversion itself
fmt.push_back(conversion);
}
switch (conversion)