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Fix left aligned integer sign in string formatting

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This commit is contained in:
Haoyu Qiu 2022-05-01 11:04:52 +08:00
parent 4a9e8b560a
commit ad1a8777bd
2 changed files with 58 additions and 15 deletions
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33
core/string/ustring.cpp
View file

@ -4427,7 +4427,7 @@ String String::sprintf(const Array &values, bool *error) const {
int min_chars = 0;
int min_decimals = 0;
bool in_decimals = false;
bool pad_with_zeroes = false;
bool pad_with_zeros = false;
bool left_justified = false;
bool show_sign = false;
@ -4480,7 +4480,7 @@ String String::sprintf(const Array &values, bool *error) const {
// Padding.
int pad_chars_count = (value < 0 || show_sign) ? min_chars - 1 : min_chars;
String pad_char = pad_with_zeroes ? String("0") : String(" ");
String pad_char = pad_with_zeros ? String("0") : String(" ");
if (left_justified) {
str = str.rpad(pad_chars_count, pad_char);
} else {
@ -4488,10 +4488,13 @@ String String::sprintf(const Array &values, bool *error) const {
}
// Sign.
if (show_sign && value >= 0) {
str = str.insert(pad_with_zeroes ? 0 : str.length() - number_len, "+");
} else if (value < 0) {
str = str.insert(pad_with_zeroes ? 0 : str.length() - number_len, "-");
if (show_sign || value < 0) {
String sign_char = value < 0 ? "-" : "+";
if (left_justified) {
str = str.insert(0, sign_char);
} else {
str = str.insert(pad_with_zeros ? 0 : str.length() - number_len, sign_char);
}
}
formatted += str;
@ -4520,13 +4523,9 @@ String String::sprintf(const Array &values, bool *error) const {
// Padding. Leave room for sign later if required.
int pad_chars_count = (is_negative || show_sign) ? min_chars - 1 : min_chars;
String pad_char = pad_with_zeroes ? String("0") : String(" ");
String pad_char = pad_with_zeros ? String("0") : String(" ");
if (left_justified) {
if (pad_with_zeroes) {
return "left justification cannot be used with zeros as the padding";
} else {
str = str.rpad(pad_chars_count, pad_char);
}
str = str.rpad(pad_chars_count, pad_char);
} else {
str = str.lpad(pad_chars_count, pad_char);
}
@ -4537,7 +4536,7 @@ String String::sprintf(const Array &values, bool *error) const {
if (left_justified) {
str = str.insert(0, sign_char);
} else {
str = str.insert(pad_with_zeroes ? 0 : str.length() - initial_len, sign_char);
str = str.insert(pad_with_zeros ? 0 : str.length() - initial_len, sign_char);
}
}
@ -4626,7 +4625,11 @@ String String::sprintf(const Array &values, bool *error) const {
min_decimals += n;
} else {
if (c == '0' && min_chars == 0) {
pad_with_zeroes = true;
if (left_justified) {
WARN_PRINT("'0' flag ignored with '-' flag in string format");
} else {
pad_with_zeros = true;
}
} else {
min_chars *= 10;
min_chars += n;
@ -4675,7 +4678,7 @@ String String::sprintf(const Array &values, bool *error) const {
// Back to defaults:
min_chars = 0;
min_decimals = 6;
pad_with_zeroes = false;
pad_with_zeros = false;
left_justified = false;
show_sign = false;
in_decimals = false;

40
tests/core/string/test_string.h
View file

@ -636,6 +636,38 @@ TEST_CASE("[String] sprintf") {
REQUIRE(error == false);
CHECK(output == String("fish -5 frog"));
// Negative int left padded with spaces.
format = "fish %5d frog";
args.clear();
args.push_back(-5);
output = format.sprintf(args, &error);
REQUIRE(error == false);
CHECK(output == String("fish -5 frog"));
// Negative int left padded with zeros.
format = "fish %05d frog";
args.clear();
args.push_back(-5);
output = format.sprintf(args, &error);
REQUIRE(error == false);
CHECK(output == String("fish -0005 frog"));
// Negative int right padded with spaces.
format = "fish %-5d frog";
args.clear();
args.push_back(-5);
output = format.sprintf(args, &error);
REQUIRE(error == false);
CHECK(output == String("fish -5 frog"));
// Negative int right padded with zeros. (0 ignored)
format = "fish %-05d frog";
args.clear();
args.push_back(-5);
output = format.sprintf(args, &error);
REQUIRE(error == false);
CHECK(output == String("fish -5 frog"));
// Hex (lower)
format = "fish %x frog";
args.clear();
@ -726,6 +758,14 @@ TEST_CASE("[String] sprintf") {
REQUIRE(error == false);
CHECK(output == String("fish 100 frog"));
// Negative real right padded with zeros. (0 ignored)
format = "fish %-011f frog";
args.clear();
args.push_back(-99.99);
output = format.sprintf(args, &error);
REQUIRE(error == false);
CHECK(output == String("fish -99.990000 frog"));
/////// Strings.
// String