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name : ulocdata.h
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// License & terms of use: http://www.unicode.org/copyright.html
/*
******************************************************************************
*                                                                            *
* Copyright (C) 2003-2015, International Business Machines                   *
*                Corporation and others. All Rights Reserved.                *
*                                                                            *
******************************************************************************
*   file name:  ulocdata.h
*   encoding:   UTF-8
*   tab size:   8 (not used)
*   indentation:4
*
*   created on: 2003Oct21
*   created by: Ram Viswanadha
*/

#ifndef __ULOCDATA_H__
#define __ULOCDATA_H__

#include "unicode/ures.h"
#include "unicode/uloc.h"
#include "unicode/uset.h"
#include "unicode/localpointer.h"

/**
 * \file
 * \brief C API: Provides access to locale data.
 */

/** Forward declaration of the ULocaleData structure. @stable ICU 3.6 */
struct ULocaleData;

/** A locale data object. @stable ICU 3.6 */
typedef struct ULocaleData ULocaleData;



/** The possible types of exemplar character sets.
  * @stable ICU 3.4
  */
typedef enum ULocaleDataExemplarSetType  {
    /** Basic set @stable ICU 3.4 */
    ULOCDATA_ES_STANDARD=0,
    /** Auxiliary set @stable ICU 3.4 */
    ULOCDATA_ES_AUXILIARY=1,
    /** Index Character set @stable ICU 4.8 */
    ULOCDATA_ES_INDEX=2,
    /** Punctuation set @stable ICU 51 */
    ULOCDATA_ES_PUNCTUATION=3,
#ifndef U_HIDE_DEPRECATED_API
    /**
     * One more than the highest normal ULocaleDataExemplarSetType value.
     * @deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420.
     */
    ULOCDATA_ES_COUNT=4
#endif  /* U_HIDE_DEPRECATED_API */
} ULocaleDataExemplarSetType;

/** The possible types of delimiters.
  * @stable ICU 3.4
  */
typedef enum ULocaleDataDelimiterType {
    /** Quotation start @stable ICU 3.4 */
    ULOCDATA_QUOTATION_START = 0,
    /** Quotation end @stable ICU 3.4 */
    ULOCDATA_QUOTATION_END = 1,
    /** Alternate quotation start @stable ICU 3.4 */
    ULOCDATA_ALT_QUOTATION_START = 2,
    /** Alternate quotation end @stable ICU 3.4 */
    ULOCDATA_ALT_QUOTATION_END = 3,
#ifndef U_HIDE_DEPRECATED_API
    /**
     * One more than the highest normal ULocaleDataDelimiterType value.
     * @deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420.
     */
    ULOCDATA_DELIMITER_COUNT = 4
#endif  /* U_HIDE_DEPRECATED_API */
} ULocaleDataDelimiterType;

/**
 * Opens a locale data object for the given locale
 *
 * @param localeID  Specifies the locale associated with this locale
 *                  data object.
 * @param status    Pointer to error status code.
 * @stable ICU 3.4
 */
U_STABLE ULocaleData* U_EXPORT2
ulocdata_open(const char *localeID, UErrorCode *status);

/**
 * Closes a locale data object.
 *
 * @param uld       The locale data object to close
 * @stable ICU 3.4
 */
U_STABLE void U_EXPORT2
ulocdata_close(ULocaleData *uld);

#if U_SHOW_CPLUSPLUS_API

U_NAMESPACE_BEGIN

/**
 * \class LocalULocaleDataPointer
 * "Smart pointer" class, closes a ULocaleData via ulocdata_close().
 * For most methods see the LocalPointerBase base class.
 *
 * @see LocalPointerBase
 * @see LocalPointer
 * @stable ICU 4.4
 */
U_DEFINE_LOCAL_OPEN_POINTER(LocalULocaleDataPointer, ULocaleData, ulocdata_close);

U_NAMESPACE_END

#endif

/**
 * Sets the "no Substitute" attribute of the locale data
 * object.  If true, then any methods associated with the
 * locale data object will return null when there is no
 * data available for that method, given the locale ID
 * supplied to ulocdata_open().
 *
 * @param uld       The locale data object to set.
 * @param setting   Value of the "no substitute" attribute.
 * @stable ICU 3.4
 */
U_STABLE void U_EXPORT2
ulocdata_setNoSubstitute(ULocaleData *uld, UBool setting);

/**
 * Retrieves the current "no Substitute" value of the locale data
 * object.  If true, then any methods associated with the
 * locale data object will return null when there is no
 * data available for that method, given the locale ID
 * supplied to ulocdata_open().
 *
 * @param uld       Pointer to the The locale data object to set.
 * @return UBool    Value of the "no substitute" attribute.
 * @stable ICU 3.4
 */
U_STABLE UBool U_EXPORT2
ulocdata_getNoSubstitute(ULocaleData *uld);

/**
 * Returns the set of exemplar characters for a locale.
 *
 * @param uld       Pointer to the locale data object from which the
 *                  exemplar character set is to be retrieved.
 * @param fillIn    Pointer to a USet object to receive the
 *                  exemplar character set for the given locale.  Previous
 *                  contents of fillIn are lost.  <em>If fillIn is NULL,
 *                  then a new USet is created and returned.  The caller
 *                  owns the result and must dispose of it by calling
 *                  uset_close.</em>
 * @param options   Bitmask for options to apply to the exemplar pattern.
 *                  Specify zero to retrieve the exemplar set as it is
 *                  defined in the locale data.  Specify
 *                  USET_CASE_INSENSITIVE to retrieve a case-folded
 *                  exemplar set.  See uset_applyPattern for a complete
 *                  list of valid options.  The USET_IGNORE_SPACE bit is
 *                  always set, regardless of the value of 'options'.
 * @param extype    Specifies the type of exemplar set to be retrieved.
 * @param status    Pointer to an input-output error code value;
 *                  must not be NULL.  Will be set to U_MISSING_RESOURCE_ERROR
 *                  if the requested data is not available.
 * @return USet*    Either fillIn, or if fillIn is NULL, a pointer to
 *                  a newly-allocated USet that the user must close.
 *                  In case of error, NULL is returned.
 * @stable ICU 3.4
 */
U_STABLE USet* U_EXPORT2
ulocdata_getExemplarSet(ULocaleData *uld, USet *fillIn,
                        uint32_t options, ULocaleDataExemplarSetType extype, UErrorCode *status);

/**
 * Returns one of the delimiter strings associated with a locale.
 *
 * @param uld           Pointer to the locale data object from which the
 *                      delimiter string is to be retrieved.
 * @param type          the type of delimiter to be retrieved.
 * @param result        A pointer to a buffer to receive the result.
 * @param resultLength  The maximum size of result.
 * @param status        Pointer to an error code value
 * @return int32_t      The total buffer size needed; if greater than resultLength,
 *                      the output was truncated.
 * @stable ICU 3.4
 */
U_STABLE int32_t U_EXPORT2
ulocdata_getDelimiter(ULocaleData *uld, ULocaleDataDelimiterType type, UChar *result, int32_t resultLength, UErrorCode *status);

/**
 * Enumeration for representing the measurement systems.
 * @stable ICU 2.8
 */
typedef enum UMeasurementSystem {
    UMS_SI,     /**< Measurement system specified by SI otherwise known as Metric system. @stable ICU 2.8 */
    UMS_US,     /**< Measurement system followed in the United States of America. @stable ICU 2.8 */
    UMS_UK,     /**< Mix of metric and imperial units used in Great Britain. @stable ICU 55 */
#ifndef U_HIDE_DEPRECATED_API
    /**
     * One more than the highest normal UMeasurementSystem value.
     * @deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420.
     */
    UMS_LIMIT
#endif  /* U_HIDE_DEPRECATED_API */
} UMeasurementSystem;

/**
 * Returns the measurement system used in the locale specified by the localeID.
 * Please note that this API will change in ICU 3.6 and will use an ulocdata object.
 *
 * @param localeID      The id of the locale for which the measurement system to be retrieved.
 * @param status        Must be a valid pointer to an error code value,
 *                      which must not indicate a failure before the function call.
 * @return UMeasurementSystem the measurement system used in the locale.
 * @stable ICU 2.8
 */
U_STABLE UMeasurementSystem U_EXPORT2
ulocdata_getMeasurementSystem(const char *localeID, UErrorCode *status);

/**
 * Returns the element gives the normal business letter size, and customary units.
 * The units for the numbers are always in <em>milli-meters</em>.
 * For US since 8.5 and 11 do not yeild an integral value when converted to milli-meters,
 * the values are rounded off.
 * So for A4 size paper the height and width are 297 mm and 210 mm repectively,
 * and for US letter size the height and width are 279 mm and 216 mm respectively.
 * Please note that this API will change in ICU 3.6 and will use an ulocdata object.
 *
 * @param localeID      The id of the locale for which the paper size information to be retrieved.
 * @param height        A pointer to int to recieve the height information.
 * @param width         A pointer to int to recieve the width information.
 * @param status        Must be a valid pointer to an error code value,
 *                      which must not indicate a failure before the function call.
 * @stable ICU 2.8
 */
U_STABLE void U_EXPORT2
ulocdata_getPaperSize(const char *localeID, int32_t *height, int32_t *width, UErrorCode *status);

/**
 * Return the current CLDR version used by the library.
 * @param versionArray fillin that will recieve the version number
 * @param status error code - could be U_MISSING_RESOURCE_ERROR if the version was not found.
 * @stable ICU 4.2
 */
U_STABLE void U_EXPORT2
ulocdata_getCLDRVersion(UVersionInfo versionArray, UErrorCode *status);

/**
 * Returns locale display pattern associated with a locale.
 *
 * @param uld       Pointer to the locale data object from which the
 *                  exemplar character set is to be retrieved.
 * @param pattern   locale display pattern for locale.
 * @param patternCapacity the size of the buffer to store the locale display
 *                  pattern with.
 * @param status    Must be a valid pointer to an error code value,
 *                  which must not indicate a failure before the function call.
 * @return the actual buffer size needed for localeDisplayPattern.  If it's greater
 * than patternCapacity, the returned pattern will be truncated.
 *
 * @stable ICU 4.2
 */
U_STABLE int32_t U_EXPORT2
ulocdata_getLocaleDisplayPattern(ULocaleData *uld,
                                 UChar *pattern,
                                 int32_t patternCapacity,
                                 UErrorCode *status);


/**
 * Returns locale separator associated with a locale.
 *
 * @param uld       Pointer to the locale data object from which the
 *                  exemplar character set is to be retrieved.
 * @param separator locale separator for locale.
 * @param separatorCapacity the size of the buffer to store the locale
 *                  separator with.
 * @param status    Must be a valid pointer to an error code value,
 *                  which must not indicate a failure before the function call.
 * @return the actual buffer size needed for localeSeparator.  If it's greater
 * than separatorCapacity, the returned separator will be truncated.
 *
 * @stable ICU 4.2
 */
U_STABLE int32_t U_EXPORT2
ulocdata_getLocaleSeparator(ULocaleData *uld,
                            UChar *separator,
                            int32_t separatorCapacity,
                            UErrorCode *status);
#endif
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