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authorDevtools Arcadia <arcadia-devtools@yandex-team.ru>2022-02-07 18:08:42 +0300
committerDevtools Arcadia <arcadia-devtools@mous.vla.yp-c.yandex.net>2022-02-07 18:08:42 +0300
commit1110808a9d39d4b808aef724c861a2e1a38d2a69 (patch)
treee26c9fed0de5d9873cce7e00bc214573dc2195b7 /contrib/libs/icu/include/unicode/ufieldpositer.h
downloadydb-1110808a9d39d4b808aef724c861a2e1a38d2a69.tar.gz
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+// © 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
+
+#include "unicode/localpointer.h"
+
+/**
+ * \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_STABLE 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_STABLE 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, UFieldPositionIterator, 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_STABLE int32_t U_EXPORT2
+ufieldpositer_next(UFieldPositionIterator *fpositer,
+ int32_t *beginIndex, int32_t *endIndex);
+
+#endif /* #if !UCONFIG_NO_FORMATTING */
+
+#endif