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Implement the L specifier

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This commit is contained in:
Victor Zverovich 2020-04-02 06:58:38 -07:00
parent 73c8437485
commit d1d653d895
3 changed files with 14 additions and 12 deletions
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20
doc/syntax.rst
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@ -81,8 +81,8 @@ The general form of a *standard format specifier* is:
sign: "+" | "-" | " "
width: `integer` | "{" `arg_id` "}"
precision: `integer` | "{" `arg_id` "}"
type: `int_type` | "a" | "A" | "c" | "e" | "E" | "f" | "F" | "g" | "G" | "p" | "s"
int_type: "b" | "B" | "d" | "n" | "o" | "x" | "X"
type: `int_type` | "a" | "A" | "c" | "e" | "E" | "f" | "F" | "g" | "G" | "L" | "p" | "s"
int_type: "b" | "B" | "d" | "o" | "x" | "X"
The *fill* character can be any Unicode code point other than ``'{'`` or
``'}'``. The presence of a fill character is signaled by the character following
@ -143,7 +143,7 @@ conversions, trailing zeros are not removed from the result.
.. ifconfig:: False
The ``','`` option signals the use of a comma for a thousands separator.
For a locale aware separator, use the ``'n'`` integer presentation type
For a locale aware separator, use the ``'L'`` integer presentation type
instead.
*width* is a decimal integer defining the minimum field width. If not
@ -214,9 +214,9 @@ The available integer presentation types are:
| | ``'#'`` option with this type adds the prefix ``"0X"`` |
| | to the output value. |
+---------+----------------------------------------------------------+
| ``'n'`` | Number. This is the same as ``'d'``, except that it uses |
| | the current locale setting to insert the appropriate |
| | number separator characters. |
| ``'L'`` | Locale-specific format. This is the same as ``'d'``, |
| | except that it uses the current locale setting to insert |
| | the appropriate number separator characters. |
+---------+----------------------------------------------------------+
| none | The same as ``'d'``. |
+---------+----------------------------------------------------------+
@ -261,9 +261,9 @@ The available presentation types for floating-point values are:
| | ``'E'`` if the number gets too large. The |
| | representations of infinity and NaN are uppercased, too. |
+---------+----------------------------------------------------------+
| ``'n'`` | Number. This is the same as ``'g'``, except that it uses |
| | the current locale setting to insert the appropriate |
| | number separator characters. |
| ``'L'`` | Locale-specific format. This is the same as ``'g'``, |
| | except that it uses the current locale setting to insert |
| | the appropriate number separator characters. |
+---------+----------------------------------------------------------+
| none | Similar to ``'g'``, except that fixed-point notation, |
| | when used, has at least one digit past the decimal |
@ -403,7 +403,7 @@ Using the comma as a thousands separator::
#include <fmt/locale.h>
auto s = fmt::format(std::locale("en_US.UTF-8"), "{:n}", 1234567890);
auto s = fmt::format(std::locale("en_US.UTF-8"), "{:L}", 1234567890);
// s == "1,234,567,890"
.. ifconfig:: False

1
include/fmt/format.h
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@ -1236,6 +1236,7 @@ FMT_CONSTEXPR void handle_int_type_spec(char spec, Handler&& handler) {
handler.on_oct();
break;
case 'n':
case 'L':
handler.on_num();
break;
default:

5
test/format-test.cc
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@ -1256,7 +1256,7 @@ TEST(FormatterTest, FormatShort) {
TEST(FormatterTest, FormatInt) {
EXPECT_THROW_MSG(format("{0:v", 42), format_error,
"missing '}' in format string");
check_unknown_types(42, "bBdoxXn", "integer");
check_unknown_types(42, "bBdoxXnL", "integer");
}
TEST(FormatterTest, FormatBin) {
@ -1397,6 +1397,7 @@ TEST(FormatterTest, FormatOct) {
TEST(FormatterTest, FormatIntLocale) {
EXPECT_EQ("1234", format("{:n}", 1234));
EXPECT_EQ("1234", format("{:L}", 1234));
}
struct ConvertibleToLongLong {
@ -1491,7 +1492,7 @@ TEST(FormatterTest, FormatLongDouble) {
}
TEST(FormatterTest, FormatChar) {
const char types[] = "cbBdoxXn";
const char types[] = "cbBdoxXnL";
check_unknown_types('a', types, "char");
EXPECT_EQ("a", format("{0}", 'a'));
EXPECT_EQ("z", format("{0:c}", 'z'));