golden hour

/opt/alt/libicu65/usr/include/unicode

File/Folder	Size	Actions
alphaindex.h	26.48 KB
appendable.h	8.49 KB
basictz.h	9.15 KB
brkiter.h	27.8 KB
bytestream.h	9.6 KB
bytestrie.h	20.77 KB
bytestriebuilder.h	7.08 KB
calendar.h	105.74 KB
caniter.h	7.43 KB
casemap.h	25.33 KB
char16ptr.h	7.22 KB
chariter.h	24.05 KB
choicfmt.h	23.91 KB
coleitr.h	13.76 KB
coll.h	56.23 KB
compactdecimalformat.h	6.88 KB
curramt.h	3.76 KB
currpinf.h	7.3 KB
currunit.h	4.05 KB
datefmt.h	40.67 KB
dbbi.h	1.19 KB
dcfmtsym.h	20.13 KB
decimfmt.h	87.38 KB
docmain.h	6.97 KB
dtfmtsym.h	37.7 KB
dtintrv.h	3.84 KB
dtitvfmt.h	46.63 KB
dtitvinf.h	18.51 KB
dtptngen.h	25.08 KB
dtrule.h	8.68 KB
edits.h	20.74 KB
enumset.h	2.08 KB
errorcode.h	4.84 KB
fieldpos.h	8.69 KB
filteredbrk.h	5.37 KB
fmtable.h	24.42 KB
format.h	12.5 KB
formattedvalue.h	10.27 KB
fpositer.h	3.04 KB
gender.h	3.33 KB
gregocal.h	31.71 KB
icudataver.h	1.03 KB
icuplug.h	11.88 KB
idna.h	12.7 KB
listformatter.h	9.47 KB
localebuilder.h	11.27 KB
localematcher.h	22.5 KB
localpointer.h	19.69 KB
locdspnm.h	7.12 KB
locid.h	47.4 KB
measfmt.h	11.33 KB
measunit.h	93.31 KB
measure.h	4.32 KB
messagepattern.h	33.71 KB
msgfmt.h	44.11 KB
normalizer2.h	34.03 KB
normlzr.h	30.94 KB
nounit.h	2.69 KB
numberformatter.h	86.31 KB
numberrangeformatter.h	30.14 KB
numfmt.h	49.81 KB
numsys.h	7.19 KB
parseerr.h	3.08 KB
parsepos.h	5.56 KB
platform.h	28.08 KB
plurfmt.h	25.2 KB
plurrule.h	18.39 KB
ptypes.h	3.49 KB
putil.h	6.33 KB
rbbi.h	26.58 KB
rbnf.h	48.73 KB
rbtz.h	15.6 KB
regex.h	84.36 KB
region.h	9.18 KB
reldatefmt.h	22.62 KB
rep.h	9.37 KB
resbund.h	18.07 KB
schriter.h	6.32 KB
scientificnumberformatter.h	6.4 KB
search.h	22.22 KB
selfmt.h	14.3 KB
simpleformatter.h	12.59 KB
simpletz.h	45.44 KB
smpdtfmt.h	70.97 KB
sortkey.h	11.18 KB
std_string.h	1.05 KB
strenum.h	9.92 KB
stringoptions.h	5.79 KB
stringpiece.h	7.38 KB
stringtriebuilder.h	15.33 KB
stsearch.h	21.3 KB
symtable.h	4.27 KB
tblcoll.h	36.61 KB
timezone.h	41.02 KB
tmunit.h	3.38 KB
tmutamt.h	4.9 KB
tmutfmt.h	7.85 KB
translit.h	65.82 KB
tzfmt.h	42.89 KB
tznames.h	16.85 KB
tzrule.h	35.37 KB
tztrans.h	6.12 KB
ubidi.h	89.56 KB
ubiditransform.h	12.65 KB
ubrk.h	23.97 KB
ucal.h	56.9 KB
ucasemap.h	15.18 KB
ucat.h	5.36 KB
uchar.h	140.56 KB
ucharstrie.h	22.58 KB
ucharstriebuilder.h	7.21 KB
uchriter.h	13.2 KB
uclean.h	11.21 KB
ucnv.h	83.09 KB
ucnv_cb.h	6.59 KB
ucnv_err.h	20.99 KB
ucnvsel.h	6.14 KB
ucol.h	61.46 KB
ucoleitr.h	9.46 KB
uconfig.h	12.07 KB
ucpmap.h	5.53 KB
ucptrie.h	22.46 KB
ucsdet.h	14.67 KB
ucurr.h	16.12 KB
udat.h	60.88 KB
udata.h	15.56 KB
udateintervalformat.h	10.03 KB
udatpg.h	26.01 KB
udisplaycontext.h	5.89 KB
uenum.h	7.78 KB
ufieldpositer.h	4.36 KB
uformattable.h	10.94 KB
uformattedvalue.h	12.14 KB
ugender.h	2 KB
uidna.h	33.37 KB
uiter.h	22.77 KB
uldnames.h	10.45 KB
ulistformatter.h	8.83 KB
uloc.h	52.54 KB
ulocdata.h	11.26 KB
umachine.h	14.53 KB
umisc.h	1.33 KB
umsg.h	24.23 KB
umutablecptrie.h	8.24 KB
unifilt.h	3.96 KB
unifunct.h	4.04 KB
unimatch.h	6.1 KB
unirepl.h	3.38 KB
uniset.h	64.9 KB
unistr.h	170.43 KB
unorm.h	20.52 KB
unorm2.h	24.66 KB
unum.h	53.62 KB
unumberformatter.h	25.36 KB
unumsys.h	7.21 KB
uobject.h	10.68 KB
upluralrules.h	7.88 KB
uregex.h	72.05 KB
uregion.h	9.84 KB
ureldatefmt.h	17.26 KB
urename.h	130.97 KB
urep.h	5.38 KB
ures.h	36.54 KB
uscript.h	26.87 KB
usearch.h	38.12 KB
uset.h	40 KB
usetiter.h	9.55 KB
ushape.h	18 KB
uspoof.h	65.9 KB
usprep.h	8.14 KB
ustdio.h	38.54 KB
ustream.h	1.89 KB
ustring.h	72.47 KB
ustringtrie.h	3.15 KB
utext.h	58.13 KB
utf.h	7.86 KB
utf16.h	23.32 KB
utf32.h	763 B
utf8.h	30.96 KB
utf_old.h	45.83 KB
utmscale.h	13.78 KB
utrace.h	15.73 KB
utrans.h	25.52 KB
utypes.h	30.74 KB
uvernum.h	6.67 KB
uversion.h	6 KB
vtzone.h	20.3 KB

Edit: formattedvalue.h

// © 2018 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html

#ifndef __FORMATTEDVALUE_H__
#define __FORMATTEDVALUE_H__

#include "unicode/utypes.h"

#if U_SHOW_CPLUSPLUS_API

#if !UCONFIG_NO_FORMATTING

#include "unicode/appendable.h"
#include "unicode/fpositer.h"
#include "unicode/unistr.h"
#include "unicode/uformattedvalue.h"

U_NAMESPACE_BEGIN

/**
 * \file
 * \brief C++ API: Abstract operations for localized strings.
 * 
 * This file contains declarations for classes that deal with formatted strings. A number
 * of APIs throughout ICU use these classes for expressing their localized output.
 */

// The following cannot have #ifndef U_HIDE_DRAFT_API because
// class FormattedValue depends on it, and FormattedValue cannot be
// hidden becauseclass FormattedNumber (stable ICU 60) depends on it.
#ifndef U_FORCE_HIDE_DRAFT_API
/**
 * Represents a span of a string containing a given field.
 *
 * This class differs from FieldPosition in the following ways:
 *
 *   1. It has information on the field category.
 *   2. It allows you to set constraints to use when iterating over field positions.
 *   3. It is used for the newer FormattedValue APIs.
 *
 * This class is not intended for public subclassing.
 *
 * @draft ICU 64
 */
class U_I18N_API ConstrainedFieldPosition : public UMemory {
  public:

/**
     * Initializes a ConstrainedFieldPosition.
     *
     * By default, the ConstrainedFieldPosition has no iteration constraints.
     *
     * @draft ICU 64
     */
    ConstrainedFieldPosition();

/** @draft ICU 64 */
    ~ConstrainedFieldPosition();

#ifndef U_HIDE_DRAFT_API
    /**
     * Resets this ConstrainedFieldPosition to its initial state, as if it were newly created:
     *
     * - Removes any constraints that may have been set on the instance.
     * - Resets the iteration position.
     *
     * @draft ICU 64
     */
    void reset();

/**
     * Sets a constraint on the field category.
     * 
     * When this instance of ConstrainedFieldPosition is passed to FormattedValue#nextPosition,
     * positions are skipped unless they have the given category.
     *
     * Any previously set constraints are cleared.
     *
     * For example, to loop over only the number-related fields:
     *
     *     ConstrainedFieldPosition cfpos;
     *     cfpos.constrainCategory(UFIELDCATEGORY_NUMBER_FORMAT);
     *     while (fmtval.nextPosition(cfpos, status)) {
     *         // handle the number-related field position
     *     }
     *
     * Changing the constraint while in the middle of iterating over a FormattedValue
     * does not generally have well-defined behavior.
     *
     * @param category The field category to fix when iterating.
     * @draft ICU 64
     */
    void constrainCategory(int32_t category);

/**
     * Sets a constraint on the category and field.
     * 
     * When this instance of ConstrainedFieldPosition is passed to FormattedValue#nextPosition,
     * positions are skipped unless they have the given category and field.
     *
     * Any previously set constraints are cleared.
     *
     * For example, to loop over all grouping separators:
     *
     *     ConstrainedFieldPosition cfpos;
     *     cfpos.constrainField(UFIELDCATEGORY_NUMBER_FORMAT, UNUM_GROUPING_SEPARATOR_FIELD);
     *     while (fmtval.nextPosition(cfpos, status)) {
     *         // handle the grouping separator position
     *     }
     *
     * Changing the constraint while in the middle of iterating over a FormattedValue
     * does not generally have well-defined behavior.
     *
     * @param category The field category to fix when iterating.
     * @param field The field to fix when iterating.
     * @draft ICU 64
     */
    void constrainField(int32_t category, int32_t field);

/**
     * Gets the field category for the current position.
     *
     * The return value is well-defined only after
     * FormattedValue#nextPosition returns TRUE.
     *
     * @return The field category saved in the instance.
     * @draft ICU 64
     */
    inline int32_t getCategory() const {
        return fCategory;
    }

/**
     * Gets the field for the current position.
     *
     * The return value is well-defined only after
     * FormattedValue#nextPosition returns TRUE.
     *
     * @return The field saved in the instance.
     * @draft ICU 64
     */
    inline int32_t getField() const {
        return fField;
    }

/**
     * Gets the INCLUSIVE start index for the current position.
     *
     * The return value is well-defined only after FormattedValue#nextPosition returns TRUE.
     *
     * @return The start index saved in the instance.
     * @draft ICU 64
     */
    inline int32_t getStart() const {
        return fStart;
    }

/**
     * Gets the EXCLUSIVE end index stored for the current position.
     *
     * The return value is well-defined only after FormattedValue#nextPosition returns TRUE.
     *
     * @return The end index saved in the instance.
     * @draft ICU 64
     */
    inline int32_t getLimit() const {
        return fLimit;
    }

////////////////////////////////////////////////////////////////////
    //// The following methods are for FormattedValue implementers; ////
    //// most users can ignore them.                                ////
    ////////////////////////////////////////////////////////////////////

/**
     * Gets an int64 that FormattedValue implementations may use for storage.
     *
     * The initial value is zero.
     *
     * Users of FormattedValue should not need to call this method.
     *
     * @return The current iteration context from {@link #setInt64IterationContext}.
     * @draft ICU 64
     */
    inline int64_t getInt64IterationContext() const {
        return fContext;
    }

/**
     * Sets an int64 that FormattedValue implementations may use for storage.
     *
     * Intended to be used by FormattedValue implementations.
     *
     * @param context The new iteration context.
     * @draft ICU 64
     */
    void setInt64IterationContext(int64_t context);

/**
     * Determines whether a given field should be included given the
     * constraints.
     *
     * Intended to be used by FormattedValue implementations.
     *
     * @param category The category to test.
     * @param field The field to test.
     * @draft ICU 64
     */
    UBool matchesField(int32_t category, int32_t field) const;

/**
     * Sets new values for the primary public getters.
     *
     * Intended to be used by FormattedValue implementations.
     *
     * It is up to the implementation to ensure that the user-requested
     * constraints are satisfied. This method does not check!
     *
     * @param category The new field category.
     * @param field The new field.
     * @param start The new inclusive start index.
     * @param limit The new exclusive end index.
     * @draft ICU 64
     */
    void setState(
        int32_t category,
        int32_t field,
        int32_t start,
        int32_t limit);
#endif  /* U_HIDE_DRAFT_API */

private:
    int64_t fContext = 0LL;
    int32_t fField = 0;
    int32_t fStart = 0;
    int32_t fLimit = 0;
#ifndef U_HIDE_DRAFT_API
    int32_t fCategory = UFIELD_CATEGORY_UNDEFINED;
#else   /* U_HIDE_DRAFT_API */
    int32_t fCategory = 0;
#endif  /* U_HIDE_DRAFT_API */
    int8_t fConstraint = 0;
};

// The following cannot have #ifndef U_HIDE_DRAFT_API because
// class FormattedNumber (stable ICU 60) depends on it.
/**
 * An abstract formatted value: a string with associated field attributes.
 * Many formatters format to classes implementing FormattedValue.
 *
 * @draft ICU 64
 */
class U_I18N_API FormattedValue /* not : public UObject because this is an interface/mixin class */ {
  public:
    /** @draft ICU 64 */
    virtual ~FormattedValue();

/**
     * Returns the formatted string as a self-contained UnicodeString.
     *
     * If you need the string within the current scope only, consider #toTempString.
     *
     * @param status Set if an error occurs.
     * @return a UnicodeString containing the formatted string.
     *
     * @draft ICU 64
     */
    virtual UnicodeString toString(UErrorCode& status) const = 0;

/**
     * Returns the formatted string as a read-only alias to memory owned by the FormattedValue.
     *
     * The return value is valid only as long as this FormattedValue is present and unchanged in
     * memory. If you need the string outside the current scope, consider #toString.
     *
     * The buffer returned by calling UnicodeString#getBuffer() on the return value is
     * guaranteed to be NUL-terminated.
     *
     * @param status Set if an error occurs.
     * @return a temporary UnicodeString containing the formatted string.
     *
     * @draft ICU 64
     */
    virtual UnicodeString toTempString(UErrorCode& status) const = 0;

/**
     * Appends the formatted string to an Appendable.
     *
     * @param appendable
     *         The Appendable to which to append the string output.
     * @param status Set if an error occurs.
     * @return The same Appendable, for chaining.
     *
     * @draft ICU 64
     * @see Appendable
     */
    virtual Appendable& appendTo(Appendable& appendable, UErrorCode& status) const = 0;

/**
     * Iterates over field positions in the FormattedValue. This lets you determine the position
     * of specific types of substrings, like a month or a decimal separator.
     *
     * To loop over all field positions:
     *
     *     ConstrainedFieldPosition cfpos;
     *     while (fmtval.nextPosition(cfpos, status)) {
     *         // handle the field position; get information from cfpos
     *     }
     *
     * @param cfpos
     *         The object used for iteration state. This can provide constraints to iterate over
     *         only one specific category or field;
     *         see ConstrainedFieldPosition#constrainCategory
     *         and ConstrainedFieldPosition#constrainField.
     * @param status Set if an error occurs.
     * @return TRUE if a new occurrence of the field was found;
     *         FALSE otherwise or if an error was set.
     *
     * @draft ICU 64
     */
    virtual UBool nextPosition(ConstrainedFieldPosition& cfpos, UErrorCode& status) const = 0;
};
#endif  // U_FORCE_HIDE_DRAFT_API

U_NAMESPACE_END

#endif /* #if !UCONFIG_NO_FORMATTING */

#endif /* U_SHOW_CPLUSPLUS_API */

#endif // __FORMATTEDVALUE_H__