depish/cppdraft_translate
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Init

Browse Source
This commit is contained in:
Leonov Artur (Depish)
2025-10-25 03:02:53 +03:00
commit 043225d523
3416 changed files with 681196 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

282
cppdraft/locale/moneypunct.md Normal file
View File

@@ -0,0 +1,282 @@
[locale.moneypunct]
# 28 Text processing library [[text]](./#text)
## 28.3 Localization library [[localization]](localization#locale.moneypunct)
### 28.3.4 Standard locale categories [[locale.categories]](locale.categories#locale.moneypunct)
#### 28.3.4.7 The monetary category [[category.monetary]](category.monetary#locale.moneypunct)
#### 28.3.4.7.4 Class template moneypunct [locale.moneypunct]
#### [28.3.4.7.4.1](#general) General [[locale.moneypunct.general]](locale.moneypunct.general)
[🔗](#lib:moneypunct)
namespace std {class money_base {public:enum part { none, space, symbol, sign, value }; struct pattern { char field[4]; }; }; template<class charT, bool International = false>class moneypunct : public locale::facet, public money_base {public:using char_type = charT; using string_type = basic_string<charT>; explicit moneypunct(size_t refs = 0);
charT decimal_point() const;
charT thousands_sep() const;
string grouping() const;
string_type curr_symbol() const;
string_type positive_sign() const;
string_type negative_sign() const; int frac_digits() const;
pattern pos_format() const;
pattern neg_format() const; static locale::id id; static const bool intl = International; protected:~moneypunct(); virtual charT do_decimal_point() const; virtual charT do_thousands_sep() const; virtual string do_grouping() const; virtual string_type do_curr_symbol() const; virtual string_type do_positive_sign() const; virtual string_type do_negative_sign() const; virtual int do_frac_digits() const; virtual pattern do_pos_format() const; virtual pattern do_neg_format() const; };}
[1](#general-1)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L4465)
The moneypunct<> facet defines monetary formatting parameters
used by money_get<> and money_put<>[.](#general-1.sentence-1)
A monetary format is a sequence of four components,
specified by a pattern value p,
such that the part value static_cast<part>(p.field[i]) determines the ith component of the format[.](#general-1.sentence-2)[230](#footnote-230 "An array of char, rather than an array of part, is specified for pattern​::​field purely for efficiency.")
In the field member of a pattern object,
each value symbol, sign, value, and
either space or none appears exactly once[.](#general-1.sentence-3)
The value none, if present, is not first;
the value space, if present, is neither first nor last[.](#general-1.sentence-4)
[2](#general-2)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L4484)
Where none or space appears,
whitespace is permitted in the format,
except where none appears at the end,
in which case no whitespace is permitted[.](#general-2.sentence-1)
The value space indicates that
at least one space is required at that position[.](#general-2.sentence-2)
Where symbol appears,
the sequence of characters returned by curr_symbol() is permitted, and
can be required[.](#general-2.sentence-3)
Where sign appears,
the first (if any) of the sequence of characters returned bypositive_sign() or negative_sign() (respectively as the monetary value is non-negative or negative) is required[.](#general-2.sentence-4)
Any remaining characters of the sign sequence are required after
all other format components[.](#general-2.sentence-5)
Where value appears, the absolute numeric monetary value is required[.](#general-2.sentence-6)
[3](#general-3)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L4502)
The format of the numeric monetary value is a decimal number:
value :
units fractionalopt
decimal-point digits
fractional :
decimal-point digitsopt
if frac_digits() returns a positive value, or
value :
units
otherwise[.](#general-3.sentence-1)
The symbol *decimal-point* indicates the character returned by decimal_point()[.](#general-3.sentence-2)
The other symbols are defined as follows:
units :
digits
digits thousands-sep units
digits :
adigit digitsopt
In the syntax specification,
the symbol *adigit* is any of the values ct.widen(c) for c in the range '0' through '9' (inclusive) andct is a reference of type const ctype<charT>& obtained as described in the definitions
of money_get<> and money_put<>[.](#general-3.sentence-4)
The symbol *thousands-sep* is the character returned by thousands_sep()[.](#general-3.sentence-5)
The space character used is the value ct.widen(' ')[.](#general-3.sentence-6)
Whitespace characters are those characters c for which ci.is(space, c) returns true[.](#general-3.sentence-7)
The number of digits required after the decimal point (if any)
is exactly the value returned by frac_digits()[.](#general-3.sentence-8)
[4](#general-4)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L4548)
The placement of thousands-separator characters (if any)
is determined by the value returned by grouping(),
defined identically as the member numpunct<>​::​do_grouping()[.](#general-4.sentence-1)
[230)](#footnote-230)[230)](#footnoteref-230)
An array of char,
rather than an array of part,
is specified for pattern​::​field purely for efficiency[.](#footnote-230.sentence-1)
#### [28.3.4.7.4.2](#members) Members [[locale.moneypunct.members]](locale.moneypunct.members)
[🔗](#lib:moneypunct,decimal_point)
charT decimal_point() const;
charT thousands_sep() const;
string grouping() const;
string_type curr_symbol() const;
string_type positive_sign() const;
string_type negative_sign() const;int frac_digits() const;
pattern pos_format() const;
pattern neg_format() const;
[1](#members-1)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L4576)
Each of these functions *F* returns the result of calling the corresponding
virtual member functiondo_*F*()[.](#members-1.sentence-1)
#### [28.3.4.7.4.3](#virtuals) Virtual functions [[locale.moneypunct.virtuals]](locale.moneypunct.virtuals)
[🔗](#lib:moneypunct,do_decimal_point)
`charT do_decimal_point() const;
`
[1](#virtuals-1)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L4590)
*Returns*: The radix separator to use
in case do_frac_digits() is greater than zero[.](#virtuals-1.sentence-1)[231](#footnote-231 "In common U.S. locales this is '.'.")
[🔗](#lib:moneypunct,do_thousands_sep)
`charT do_thousands_sep() const;
`
[2](#virtuals-2)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L4605)
*Returns*: The digit group separator to use
in case do_grouping() specifies a digit grouping pattern[.](#virtuals-2.sentence-1)[232](#footnote-232 "In common U.S. locales this is ','.")
[🔗](#lib:moneypunct,do_grouping)
`string do_grouping() const;
`
[3](#virtuals-3)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L4620)
*Returns*: A pattern defined identically as, but not necessarily equal to,
the result of numpunct<charT>​::​​do_grouping()[.](#virtuals-3.sentence-1)[233](#footnote-233 "To specify grouping by 3s, the value is &quot;\003&quot; not &quot;3&quot;.")
[🔗](#lib:moneypunct,do_curr_symbol)
`string_type do_curr_symbol() const;
`
[4](#virtuals-4)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L4636)
*Returns*: A string to use as the currency identifier symbol[.](#virtuals-4.sentence-1)
[*Note [1](#virtuals-note-1)*:
For specializations where the second template parameter is true,
this is typically four characters long:
a three-letter code as specified by ISO 4217[[bib]](bibliography#bib:iso4217 "Bibliography") followed by a space[.](#virtuals-4.sentence-2)
— *end note*]
[🔗](#lib:moneypunct,do_positive_sign)
`string_type do_positive_sign() const;
string_type do_negative_sign() const;
`
[5](#virtuals-5)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L4655)
*Returns*: do_positive_sign() returns the string to use to indicate a positive monetary value;[234](#footnote-234 "This is usually the empty string.")do_negative_sign() returns the string to use to indicate a negative value[.](#virtuals-5.sentence-1)
[🔗](#lib:moneypunct,do_frac_digits)
`int do_frac_digits() const;
`
[6](#virtuals-6)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L4672)
*Returns*: The number of digits after the decimal radix separator, if any[.](#virtuals-6.sentence-1)[235](#footnote-235 "In common U.S.&nbsp;locales, this is 2.")
[🔗](#lib:moneypunct,do_pos_format)
`pattern do_pos_format() const;
pattern do_neg_format() const;
`
[7](#virtuals-7)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L4688)
*Returns*: The specializations required in Table [92](locale.category#tab:locale.spec "Table 92: Required specializations") ([[locale.category]](locale.category "28.3.3.1.2.1 Type locale​::​category")), namely
- [(7.1)](#virtuals-7.1)
moneypunct<char>,
- [(7.2)](#virtuals-7.2)
moneypunct<wchar_t>,
- [(7.3)](#virtuals-7.3)
moneypunct<char, true>, and
- [(7.4)](#virtuals-7.4)
moneypunct<wchar_t, true>,
return an object of type pattern initialized to { symbol, sign, none, value }[.](#virtuals-7.sentence-1)[236](#footnote-236 "Note that the international symbol returned by do_­curr_­symbol() usually contains a space, itself; for example, &quot;USD &quot;.")
[231)](#footnote-231)[231)](#footnoteref-231)
In common U.S. locales this is '.'[.](#footnote-231.sentence-1)
[232)](#footnote-232)[232)](#footnoteref-232)
In common U.S. locales this is ','[.](#footnote-232.sentence-1)
[233)](#footnote-233)[233)](#footnoteref-233)
To specify grouping by 3s,
the value is "\003" *not* "3"[.](#footnote-233.sentence-1)
[234)](#footnote-234)[234)](#footnoteref-234)
This is usually the empty string[.](#footnote-234.sentence-1)
[235)](#footnote-235)[235)](#footnoteref-235)
In common U.S. locales, this is 2[.](#footnote-235.sentence-1)
[236)](#footnote-236)[236)](#footnoteref-236)
Note that the international symbol returned by do_curr_symbol() usually contains a space, itself;
for example, "USD "[.](#footnote-236.sentence-1)