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: measfmt.h

// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
**********************************************************************
* Copyright (c) 2004-2016, International Business Machines
* Corporation and others.  All Rights Reserved.
**********************************************************************
* Author: Alan Liu
* Created: April 20, 2004
* Since: ICU 3.0
**********************************************************************
*/
#ifndef MEASUREFORMAT_H
#define MEASUREFORMAT_H

#include "unicode/utypes.h"

#if U_SHOW_CPLUSPLUS_API

#if !UCONFIG_NO_FORMATTING

#include "unicode/format.h"
#include "unicode/udat.h"

/**
 * \file 
 * \brief C++ API: Compatibility APIs for measure formatting.
 */

/**
 * Constants for various widths.
 * There are 4 widths: Wide, Short, Narrow, Numeric.
 * For example, for English, when formatting "3 hours"
 * Wide is "3 hours"; short is "3 hrs"; narrow is "3h";
 * formatting "3 hours 17 minutes" as numeric give "3:17"
 * @stable ICU 53
 */
enum UMeasureFormatWidth {

// Wide, short, and narrow must be first and in this order.
    /**
     * Spell out measure units.
     * @stable ICU 53 
     */
    UMEASFMT_WIDTH_WIDE,
 
    /**
     * Abbreviate measure units.
     * @stable ICU 53
     */
    UMEASFMT_WIDTH_SHORT,

/**
     * Use symbols for measure units when possible.
     * @stable ICU 53
     */
    UMEASFMT_WIDTH_NARROW,

/**
     * Completely omit measure units when possible. For example, format
     * '5 hours, 37 minutes' as '5:37'
     * @stable ICU 53
     */
    UMEASFMT_WIDTH_NUMERIC,

#ifndef U_HIDE_DEPRECATED_API
    /**
     * One more than the highest normal UMeasureFormatWidth value.
     * @deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420.
     */
    UMEASFMT_WIDTH_COUNT = 4
#endif  // U_HIDE_DEPRECATED_API
};
/** @stable ICU 53 */
typedef enum UMeasureFormatWidth UMeasureFormatWidth;

U_NAMESPACE_BEGIN

class Measure;
class MeasureUnit;
class NumberFormat;
class PluralRules;
class MeasureFormatCacheData;
class SharedNumberFormat;
class SharedPluralRules;
class QuantityFormatter;
class SimpleFormatter;
class ListFormatter;
class DateFormat;

/**
 * IMPORTANT: New users are strongly encouraged to see if
 * numberformatter.h fits their use case. Although not deprecated, this header
 * is provided for backwards compatibility only.
 *
 * @see Format
 * @author Alan Liu
 * @stable ICU 3.0
 */
class U_I18N_API MeasureFormat : public Format {
 public:
 using Format::parseObject;
 using Format::format;

/**
 * Constructor.
 * 
 * NOTE: New users are strongly encouraged to use
 * {@link icu::number::NumberFormatter} instead of NumberFormat.
 * @stable ICU 53
 */
 MeasureFormat(
 const Locale &locale, UMeasureFormatWidth width, UErrorCode &status);

/**
     * Copy constructor.
     * @stable ICU 3.0
     */
    MeasureFormat(const MeasureFormat &other);

/**
     * Assignment operator.
     * @stable ICU 3.0
     */
    MeasureFormat &operator=(const MeasureFormat &rhs);

/**
     * Destructor.
     * @stable ICU 3.0
     */
    virtual ~MeasureFormat();

/**
     * Return true if given Format objects are semantically equal.
     * @stable ICU 53
     */
    virtual UBool operator==(const Format &other) const;

/**
     * Clones this object polymorphically.
     * @stable ICU 53
     */
    virtual MeasureFormat *clone() const;

/**
     * Formats object to produce a string.
     * @stable ICU 53
     */
    virtual UnicodeString &format(
            const Formattable &obj,
            UnicodeString &appendTo,
            FieldPosition &pos,
            UErrorCode &status) const;

#ifndef U_FORCE_HIDE_DRAFT_API
    /**
     * Parse a string to produce an object. This implementation sets
     * status to U_UNSUPPORTED_ERROR.
     *
     * @draft ICU 53
     */
    virtual void parseObject(
            const UnicodeString &source,
            Formattable &reslt,
            ParsePosition &pos) const;
#endif  // U_FORCE_HIDE_DRAFT_API

/**
     * Formats measure objects to produce a string. An example of such a
     * formatted string is 3 meters, 3.5 centimeters. Measure objects appear
     * in the formatted string in the same order they appear in the "measures"
     * array. The NumberFormat of this object is used only to format the amount
     * of the very last measure. The other amounts are formatted with zero
     * decimal places while rounding toward zero.
     * @param measures array of measure objects.
     * @param measureCount the number of measure objects.
     * @param appendTo formatted string appended here.
     * @param pos the field position.
     * @param status the error.
     * @return appendTo reference
     *
     * @stable ICU 53
     */
    UnicodeString &formatMeasures(
            const Measure *measures,
            int32_t measureCount,
            UnicodeString &appendTo,
            FieldPosition &pos,
            UErrorCode &status) const;

/**
     * Formats a single measure per unit. An example of such a
     * formatted string is 3.5 meters per second.
     * @param measure The measure object. In above example, 3.5 meters.
     * @param perUnit The per unit. In above example, it is
     *        `*%MeasureUnit::createSecond(status)`.
     * @param appendTo formatted string appended here.
     * @param pos the field position.
     * @param status the error.
     * @return appendTo reference
     *
     * @stable ICU 55
     */
    UnicodeString &formatMeasurePerUnit(
            const Measure &measure,
            const MeasureUnit &perUnit,
            UnicodeString &appendTo,
            FieldPosition &pos,
            UErrorCode &status) const;

/**
     * Gets the display name of the specified {@link MeasureUnit} corresponding to the current
     * locale and format width.
     * @param unit  The unit for which to get a display name.
     * @param status the error.
     * @return  The display name in the locale and width specified in
     *          the MeasureFormat constructor, or null if there is no display name available
     *          for the specified unit.
     *
     * @stable ICU 58
     */
    UnicodeString getUnitDisplayName(const MeasureUnit& unit, UErrorCode &status) const;

/**
 * Return a formatter for CurrencyAmount objects in the given
 * locale.
 * 
 * NOTE: New users are strongly encouraged to use
 * {@link icu::number::NumberFormatter} instead of NumberFormat.
 * @param locale desired locale
 * @param ec input-output error code
 * @return a formatter object, or NULL upon error
 * @stable ICU 3.0
 */
 static MeasureFormat* U_EXPORT2 createCurrencyFormat(const Locale& locale,
 UErrorCode& ec);

/**
 * Return a formatter for CurrencyAmount objects in the default
 * locale.
 * 
 * NOTE: New users are strongly encouraged to use
 * {@link icu::number::NumberFormatter} instead of NumberFormat.
 * @param ec input-output error code
 * @return a formatter object, or NULL upon error
 * @stable ICU 3.0
 */
 static MeasureFormat* U_EXPORT2 createCurrencyFormat(UErrorCode& ec);

/**
 * Return the class ID for this class. This is useful only for comparing to
 * a return value from getDynamicClassID(). For example:
 * <pre>
 * . Base* polymorphic_pointer = createPolymorphicObject();
 * . if (polymorphic_pointer->getDynamicClassID() ==
 * . erived::getStaticClassID()) ...
 * </pre>
 * @return The class ID for all objects of this class.
 * @stable ICU 53
 */
 static UClassID U_EXPORT2 getStaticClassID(void);

/**
     * Returns a unique class ID POLYMORPHICALLY. Pure virtual override. This
     * method is to implement a simple version of RTTI, since not all C++
     * compilers support genuine RTTI. Polymorphic operator==() and clone()
     * methods call this method.
     *
     * @return          The class ID for this object. All objects of a
     *                  given class have the same class ID.  Objects of
     *                  other classes have different class IDs.
     * @stable ICU 53
     */
    virtual UClassID getDynamicClassID(void) const;

protected:
    /**
     * Default constructor.
     * @stable ICU 3.0
     */
    MeasureFormat();

#ifndef U_HIDE_INTERNAL_API

/**
     * ICU use only.
     * Initialize or change MeasureFormat class from subclass.
     * @internal.
     */
    void initMeasureFormat(
            const Locale &locale,
            UMeasureFormatWidth width,
            NumberFormat *nfToAdopt,
            UErrorCode &status);
    /**
     * ICU use only.
     * Allows subclass to change locale. Note that this method also changes
     * the NumberFormat object. Returns TRUE if locale changed; FALSE if no
     * change was made.
     * @internal.
     */
    UBool setMeasureFormatLocale(const Locale &locale, UErrorCode &status);

/**
     * ICU use only.
     * Let subclass change NumberFormat.
     * @internal.
     */
    void adoptNumberFormat(NumberFormat *nfToAdopt, UErrorCode &status);

/**
     * ICU use only.
     * @internal.
     */
    const NumberFormat &getNumberFormatInternal() const;

/**
     * ICU use only.
     * Always returns the short form currency formatter.
     * @internal.
     */
    const NumberFormat& getCurrencyFormatInternal() const;

/**
     * ICU use only.
     * @internal.
     */
    const PluralRules &getPluralRules() const;

/**
     * ICU use only.
     * @internal.
     */
    Locale getLocale(UErrorCode &status) const;

/**
     * ICU use only.
     * @internal.
     */
    const char *getLocaleID(UErrorCode &status) const;

#endif /* U_HIDE_INTERNAL_API */

private:
    const MeasureFormatCacheData *cache;
    const SharedNumberFormat *numberFormat;
    const SharedPluralRules *pluralRules;
    UMeasureFormatWidth fWidth;

// Declared outside of MeasureFormatSharedData because ListFormatter
    // objects are relatively cheap to copy; therefore, they don't need to be
    // shared across instances.
    ListFormatter *listFormatter;

UnicodeString &formatMeasure(
        const Measure &measure,
        const NumberFormat &nf,
        UnicodeString &appendTo,
        FieldPosition &pos,
        UErrorCode &status) const;

UnicodeString &formatMeasuresSlowTrack(
        const Measure *measures,
        int32_t measureCount,
        UnicodeString& appendTo,
        FieldPosition& pos,
        UErrorCode& status) const;

UnicodeString &formatNumeric(
        const Formattable *hms,  // always length 3: [0] is hour; [1] is
                                 // minute; [2] is second.
        int32_t bitMap,   // 1=hour set, 2=minute set, 4=second set
        UnicodeString &appendTo,
        UErrorCode &status) const;
};

U_NAMESPACE_END

#endif // #if !UCONFIG_NO_FORMATTING

#endif /* U_SHOW_CPLUSPLUS_API */

#endif // #ifndef MEASUREFORMAT_H