text: /**
   * Instagram Instagram License
   * This source code and all modifications done by Instagram
   * are licensed under the Apache Public License (version 2) and
   * are Copyright (c) 2009-2014 by Instagram, Inc.
   */
  
  /*
   * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
   * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
   * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
   * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
   * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
   */
  
  #ifndef TiStringRef_h
  #define TiStringRef_h
  
  #include <JavaScriptCore/TiValueRef.h>
  
  #ifndef __cplusplus
  #include <stdbool.h>
  #endif
  #include <stddef.h> /* for size_t */
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  #if !defined(WIN32) && !defined(_WIN32) \
      && !((defined(__CC_ARM) || defined(__ARMCC__)) && !defined(__linux__)) /* RVCT */
  /*!
  @typedef JSChar
  @abstract A Unicode character.
  */
      typedef unsigned short JSChar;
  #else
      typedef wchar_t JSChar;
  #endif
  
  /*!
  @function
  @abstract         Creates a JavaScript string from a buffer of Unicode characters.
  @param chars      The buffer of Unicode characters to copy into the new JSString.
  @param numChars   The number of characters to copy from the buffer pointed to by chars.
  @result           A JSString containing chars. Ownership follows the Create Rule.
  */
  JS_EXPORT TiStringRef TiStringCreateWithCharacters(const JSChar* chars, size_t numChars);
  /*!
  @function
  @abstract         Creates a JavaScript string from a null-terminated UTF8 string.
  @param string     The null-terminated UTF8 string to copy into the new JSString.
  @result           A JSString containing string. Ownership follows the Create Rule.
  */
  JS_EXPORT TiStringRef TiStringCreateWithUTF8CString(const char* string);
  
  /*!
  @function
  @abstract         Retains a JavaScript string.
  @param string     The JSString to retain.
  @result           A JSString that is the same as string.
  */
  JS_EXPORT TiStringRef TiStringRetain(TiStringRef string);
  /*!
  @function
  @abstract         Releases a JavaScript string.
  @param string     The JSString to release.
  */
  JS_EXPORT void TiStringRelease(TiStringRef string);
  
  /*!
  @function
  @abstract         Returns the number of Unicode characters in a JavaScript string.
  @param string     The JSString whose length (in Unicode characters) you want to know.
  @result           The number of Unicode characters stored in string.
  */
  JS_EXPORT size_t TiStringGetLength(TiStringRef string);
  /*!
  @function
  @abstract         Returns a pointer to the Unicode character buffer that 
   serves as the backing store for a JavaScript string.
  @param string     The JSString whose backing store you want to access.
  @result           A pointer to the Unicode character buffer that serves as string's 
   backing store, which will be deallocated when string is deallocated.
  */
  JS_EXPORT const JSChar* TiStringGetCharactersPtr(TiStringRef string);
  
  /*!
  @function
  @abstract Returns the maximum number of bytes a JavaScript string will 
   take up if converted into a null-terminated UTF8 string.
  @param string The JSString whose maximum converted size (in bytes) you 
   want to know.
  @result The maximum number of bytes that could be required to convert string into a 
   null-terminated UTF8 string. The number of bytes that the conversion actually ends 
   up requiring could be less than this, but never more.
  */
  JS_EXPORT size_t TiStringGetMaximumUTF8CStringSize(TiStringRef string);
  /*!
  @function
  @abstract Converts a JavaScript string into a null-terminated UTF8 string, 
   and copies the result into an external byte buffer.
  @param string The source JSString.
  @param buffer The destination byte buffer into which to copy a null-terminated 
   UTF8 representation of string. On return, buffer contains a UTF8 string 
   representation of string. If bufferSize is too small, buffer will contain only 
   partial results. If buffer is not at least bufferSize bytes in size, 
   behavior is undefined. 
  @param bufferSize The size of the external buffer in bytes.
  @result The number of bytes written into buffer (including the null-terminator byte).
  */
  JS_EXPORT size_t TiStringGetUTF8CString(TiStringRef string, char* buffer, size_t bufferSize);
  
  /*!
  @function
  @abstract     Tests whether two JavaScript strings match.
  @param a      The first JSString to test.
  @param b      The second JSString to test.
  @result       true if the two strings match, otherwise false.
  */
  JS_EXPORT bool TiStringIsEqual(TiStringRef a, TiStringRef b);
  /*!
  @function
  @abstract     Tests whether a JavaScript string matches a null-terminated UTF8 string.
  @param a      The JSString to test.
  @param b      The null-terminated UTF8 string to test.
  @result       true if the two strings match, otherwise false.
  */
  JS_EXPORT bool TiStringIsEqualToUTF8CString(TiStringRef a, const char* b);
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif /* TiStringRef_h */
  