// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright ( C ) 2015 - 2016 , International Business Machines
* Corporation and others . All Rights Reserved .
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*/
#ifndef UFIELDPOSITER_H
#define UFIELDPOSITER_H
#include "unicode/utypes.h"
#if !UCONFIG_NO_FORMATTING
#if U_SHOW_CPLUSPLUS_API
#include "unicode/localpointer.h"
#endif // U_SHOW_CPLUSPLUS_API
/**
* \ file
* \ brief C API : UFieldPositionIterator for use with format APIs .
*
* Usage :
* ufieldpositer_open creates an empty ( unset ) UFieldPositionIterator .
* This can be passed to format functions such as { @ link # udat_formatForFields } ,
* which will set it to apply to the fields in a particular formatted string .
* ufieldpositer_next can then be used to iterate over those fields ,
* providing for each field its type ( using values that are specific to the
* particular format type , such as date or number formats ) , as well as the
* start and end positions of the field in the formatted string .
* A given UFieldPositionIterator can be re - used for different format calls ;
* each such call resets it to apply to that format string .
* ufieldpositer_close should be called to dispose of the UFieldPositionIterator
* when it is no longer needed .
*
* @ see FieldPositionIterator
*/
/**
* Opaque UFieldPositionIterator object for use in C .
* @ stable ICU 55
*/
struct UFieldPositionIterator;
typedef struct UFieldPositionIterator UFieldPositionIterator;
/**< C typedef for struct UFieldPositionIterator. @stable ICU 55 */
/**
* Open a new , unset UFieldPositionIterator object .
* @ param status
* A pointer to a UErrorCode to receive any errors .
* @ return
* A pointer to an empty ( unset ) UFieldPositionIterator object ,
* or NULL if an error occurred .
* @ stable ICU 55
*/
U_CAPI UFieldPositionIterator* U_EXPORT2
ufieldpositer_open(UErrorCode* status);
/**
* Close a UFieldPositionIterator object . Once closed it may no longer be used .
* @ param fpositer
* A pointer to the UFieldPositionIterator object to close .
* @ stable ICU 55
*/
U_CAPI
void U_EXPORT2
ufieldpositer_close(UFieldPositionIterator *fpositer);
#if U_SHOW_CPLUSPLUS_API
U_NAMESPACE_BEGIN
/**
* \ class LocalUFieldPositionIteratorPointer
* " Smart pointer " class , closes a UFieldPositionIterator via ufieldpositer_close ( ) .
* For most methods see the LocalPointerBase base class .
*
* @ see LocalPointerBase
* @ see LocalPointer
* @ stable ICU 55
*/
U_DEFINE_LOCAL_OPEN_POINTER(LocalUFieldPositionIteratorPointer, UFieldPositionIte
rator, ufieldpositer_close);
U_NAMESPACE_END
#endif
/**
* Get information for the next field in the formatted string to which this
* UFieldPositionIterator currently applies , or return a negative value if there
* are no more fields .
* @ param fpositer
* A pointer to the UFieldPositionIterator object containing iteration
* state for the format fields .
* @ param beginIndex
* A pointer to an int32_t to receive information about the start offset
* of the field in the formatted string ( undefined if the function
* returns a negative value ) . May be NULL if this information is not needed .
* @ param endIndex
* A pointer to an int32_t to receive information about the end offset
* of the field in the formatted string ( undefined if the function
* returns a negative value ) . May be NULL if this information is not needed .
* @ return
* The field type ( non - negative value ) , or a negative value if there are
* no more fields for which to provide information . If negative , then any
* values pointed to by beginIndex and endIndex are undefined .
*
* The values for field type depend on what type of formatter the
* UFieldPositionIterator has been set by ; for a date formatter , the
* values from the UDateFormatField enum . For more information , see the
* descriptions of format functions that take a UFieldPositionIterator *
* parameter , such as { @ link # udat_formatForFields } .
*
* @ stable ICU 55
*/
U_CAPI int32_t U_EXPORT2
ufieldpositer_next(UFieldPositionIterator *fpositer,
int32_t *beginIndex, int32_t *endIndex);
#endif /* #if !UCONFIG_NO_FORMATTING */
#endif
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