text: // © 2016 and later: Unicode, Inc. and others.
  // License & terms of use: http://www.unicode.org/copyright.html
  /*
  *******************************************************************************
  *   Copyright (C) 2000-2011, International Business Machines
  *   Corporation and others.  All Rights Reserved.
  *******************************************************************************
  *
  *   file name:  uversion.h
  *   encoding:   UTF-8
  *   tab size:   8 (not used)
  *   indentation:4
  *
  *   Created by: Vladimir Weinstein
  *
  *  Gets included by utypes.h and Windows .rc files
  */
  
  /**
   * \file
   * \brief C API: API for accessing ICU version numbers.
   */
  /*===========================================================================*/
  /* Main ICU version information                                              */
  /*===========================================================================*/
  
  #ifndef UVERSION_H
  #define UVERSION_H
  
  #include "unicode/umachine.h"
  
  /* Actual version info lives in uvernum.h */
  #include "unicode/uvernum.h"
  
  /** Maximum length of the copyright string.
   *  @stable ICU 2.4
   */
  #define U_COPYRIGHT_STRING_LENGTH  128
  
  /** An ICU version consists of up to 4 numbers from 0..255.
   *  @stable ICU 2.4
   */
  #define U_MAX_VERSION_LENGTH 4
  
  /** In a string, ICU version fields are delimited by dots.
   *  @stable ICU 2.4
   */
  #define U_VERSION_DELIMITER '.'
  
  /** The maximum length of an ICU version string.
   *  @stable ICU 2.4
   */
  #define U_MAX_VERSION_STRING_LENGTH 20
  
  /** The binary form of a version on ICU APIs is an array of 4 uint8_t.
   *  To compare two versions, use memcmp(v1,v2,sizeof(UVersionInfo)).
   *  @stable ICU 2.4
   */
  typedef uint8_t UVersionInfo[U_MAX_VERSION_LENGTH];
  
  /*===========================================================================*/
  /* C++ namespace if supported. Versioned unless versioning is disabled.      */
  /*===========================================================================*/
  
  /**
   * \def U_NAMESPACE_BEGIN
   * This is used to begin a declaration of a public ICU C++ API.
   * When not compiling for C++, it does nothing.
   * When compiling for C++, it begins an extern "C++" linkage block (to protect
   * against cases in which an external client includes ICU header files inside
   * an extern "C" linkage block).
   *
   * It also begins a versioned-ICU-namespace block.
   * @stable ICU 2.4
   */
  
  /**
   * \def U_NAMESPACE_END
   * This is used to end a declaration of a public ICU C++ API.
   * When not compiling for C++, it does nothing.
   * When compiling for C++, it ends the extern "C++" block begun by
   * U_NAMESPACE_BEGIN.
   *
   * It also ends the versioned-ICU-namespace block begun by U_NAMESPACE_BEGIN.
   * @stable ICU 2.4
   */
  
  /**
   * \def U_NAMESPACE_USE
   * This is used to specify that the rest of the code uses the
   * public ICU C++ API namespace.
   * This is invoked by default; we recommend that you turn it off:
   * See the "Recommended Build Options" section of the ICU4C readme
   * (http://source.icu-project.org/repos/icu/icu/trunk/readme.html#RecBuild)
   * @stable ICU 2.4
   */
  
  /**
   * \def U_NAMESPACE_QUALIFIER
   * This is used to qualify that a function or class is part of
   * the public ICU C++ API namespace.
   *
   * This macro is unnecessary since ICU 49 requires namespace support.
   * You can just use "icu::" instead.
   * @stable ICU 2.4
   */
  
  /* Define namespace symbols if the compiler supports it. */
  #ifdef __cplusplus
  #   if U_DISABLE_RENAMING
  #       define U_ICU_NAMESPACE icu
          namespace U_ICU_NAMESPACE { }
  #   else
  #       define U_ICU_NAMESPACE U_ICU_ENTRY_POINT_RENAME(icu)
          namespace U_ICU_NAMESPACE { }
          namespace icu = U_ICU_NAMESPACE;
  #   endif
  
  #   define U_NAMESPACE_BEGIN extern "C++" { namespace U_ICU_NAMESPACE {
  #   define U_NAMESPACE_END } }
  #   define U_NAMESPACE_USE using namespace U_ICU_NAMESPACE;
  #   define U_NAMESPACE_QUALIFIER U_ICU_NAMESPACE::
  
  #   ifndef U_USING_ICU_NAMESPACE
  #       define U_USING_ICU_NAMESPACE 1
  #   endif
  #   if U_USING_ICU_NAMESPACE
          U_NAMESPACE_USE
  #   endif
  #else
  #   define U_NAMESPACE_BEGIN
  #   define U_NAMESPACE_END
  #   define U_NAMESPACE_USE
  #   define U_NAMESPACE_QUALIFIER
  #endif
  
  /*===========================================================================*/
  /* General version helper functions. Definitions in putil.c                  */
  /*===========================================================================*/
  
  /**
   * Parse a string with dotted-decimal version information and
   * fill in a UVersionInfo structure with the result.
   * Definition of this function lives in putil.c
   *
   * @param versionArray The destination structure for the version information.
   * @param versionString A string with dotted-decimal version information,
   *                      with up to four non-negative number fields with
   *                      values of up to 255 each.
   * @stable ICU 2.4
   */
  U_STABLE void U_EXPORT2
  u_versionFromString(UVersionInfo versionArray, const char *versionString);
  
  /**
   * Parse a Unicode string with dotted-decimal version information and
   * fill in a UVersionInfo structure with the result.
   * Definition of this function lives in putil.c
   *
   * @param versionArray The destination structure for the version information.
   * @param versionString A Unicode string with dotted-decimal version
   *                      information, with up to four non-negative number
   *                      fields with values of up to 255 each.
   * @stable ICU 4.2
   */
  U_STABLE void U_EXPORT2
  u_versionFromUString(UVersionInfo versionArray, const UChar *versionString);
  
  
  /**
   * Write a string with dotted-decimal version information according
   * to the input UVersionInfo.
   * Definition of this function lives in putil.c
   *
   * @param versionArray The version information to be written as a string.
   * @param versionString A string buffer that will be filled in with
   *                      a string corresponding to the numeric version
   *                      information in versionArray.
   *                      The buffer size must be at least U_MAX_VERSION_STRING_LENGTH.
   * @stable ICU 2.4
   */
  U_STABLE void U_EXPORT2
  u_versionToString(const UVersionInfo versionArray, char *versionString);
  
  /**
   * Gets the ICU release version.  The version array stores the version information
   * for ICU.  For example, release "1.3.31.2" is then represented as 0x01031F02.
   * Definition of this function lives in putil.c
   *
   * @param versionArray the version # information, the result will be filled in
   * @stable ICU 2.0
   */
  U_STABLE void U_EXPORT2
  u_getVersion(UVersionInfo versionArray);
  #endif
  