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Add 'u' format modifier for unsigned int/hex

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This commit is contained in:
Pedro J. Estébanez 2023-04-18 13:33:30 +02:00
parent cba15cd625
commit 208c1020f5
1 changed files with 21 additions and 5 deletions
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26
core/string/ustring.cpp
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@ -4842,6 +4842,7 @@ String String::sprintf(const Array &values, bool *error) const {
bool pad_with_zeros = false;
bool left_justified = false;
bool show_sign = false;
bool as_unsigned = false;
if (error) {
*error = true;
@ -4882,16 +4883,27 @@ String String::sprintf(const Array &values, bool *error) const {
case 'x':
break;
case 'X':
base = 16;
capitalize = true;
break;
}
// Get basic number.
String str = String::num_int64(ABS(value), base, capitalize);
String str;
if (!as_unsigned) {
str = String::num_int64(ABS(value), base, capitalize);
} else {
uint64_t uvalue = *((uint64_t *)&value);
// In unsigned hex, if the value fits in 32 bits, trim it down to that.
if (base == 16 && value < 0 && value >= INT32_MIN) {
uvalue &= 0xffffffff;
}
str = String::num_uint64(uvalue, base, capitalize);
}
int number_len = str.length();
bool negative = value < 0 && !as_unsigned;
// Padding.
int pad_chars_count = (value < 0 || show_sign) ? min_chars - 1 : min_chars;
int pad_chars_count = (negative || show_sign) ? min_chars - 1 : min_chars;
String pad_char = pad_with_zeros ? String("0") : String(" ");
if (left_justified) {
str = str.rpad(pad_chars_count, pad_char);
@ -4900,8 +4912,8 @@ String String::sprintf(const Array &values, bool *error) const {
}
// Sign.
if (show_sign || value < 0) {
String sign_char = value < 0 ? "-" : "+";
if (show_sign || negative) {
String sign_char = negative ? "-" : "+";
if (left_justified) {
str = str.insert(0, sign_char);
} else {
@ -5094,6 +5106,10 @@ String String::sprintf(const Array &values, bool *error) const {
show_sign = true;
break;
}
case 'u': { // Treat as unsigned (for int/hex).
as_unsigned = true;
break;
}
case '0':
case '1':
case '2':