icu::ResourceBundle Class Reference

A class representing a collection of resource information pertaining to a given locale. More...

`#include <resbund.h>`

Inheritance diagram for icu::ResourceBundle:

## Public Member Functions

| ResourceBundle (const UnicodeString &packageName, const Locale &locale, UErrorCode &err)
| Constructor. More...
| ResourceBundle (const UnicodeString &packageName, UErrorCode &err)
| Construct a resource bundle for the default bundle in the specified package. More...
| ResourceBundle (UErrorCode &err)
| Construct a resource bundle for the ICU default bundle. More...
| ResourceBundle (const char *packageName, const Locale &locale, UErrorCode &err)
| Standard constructor, constructs a resource bundle for the locale-specific bundle in the specified package. More...
| ResourceBundle (const ResourceBundle &original)
| Copy constructor. More...
| ResourceBundle (UResourceBundle *res, UErrorCode &status)
| Constructor from a C UResourceBundle. More...
ResourceBundle & | operator= (const ResourceBundle &other)
| Assignment operator. More...
virtual | ~ResourceBundle ()
| Destructor. More...
ResourceBundle * | clone () const
| Clone this object. More...
int32_t | getSize () const
| Returns the size of a resource. More...
UnicodeString | getString (UErrorCode &status) const
| returns a string from a string resource type More...
const uint8_t * | getBinary (int32_t &len, UErrorCode &status) const
| returns a binary data from a resource. More...
const int32_t * | getIntVector (int32_t &len, UErrorCode &status) const
| returns an integer vector from a resource. More...
uint32_t | getUInt (UErrorCode &status) const
| returns an unsigned integer from a resource. More...
int32_t | getInt (UErrorCode &status) const
| returns a signed integer from a resource. More...
UBool | hasNext () const
| Checks whether the resource has another element to iterate over. More...
void | resetIterator ()
| Resets the internal context of a resource so that iteration starts from the first element. More...
const char * | getKey () const
| Returns the key associated with this resource. More...
const char * | getName () const
| Gets the locale ID of the resource bundle as a string. More...
UResType | getType () const
| Returns the type of a resource. More...
ResourceBundle | getNext (UErrorCode &status)
| Returns the next resource in a given resource or nullptr if there are no more resources. More...
UnicodeString | getNextString (UErrorCode &status)
| Returns the next string in a resource or nullptr if there are no more resources to iterate over. More...
UnicodeString | getNextString (const char **key, UErrorCode &status)
| Returns the next string in a resource or nullptr if there are no more resources to iterate over. More...
ResourceBundle | get (int32_t index, UErrorCode &status) const
| Returns the resource in a resource at the specified index. More...
UnicodeString | getStringEx (int32_t index, UErrorCode &status) const
| Returns the string in a given resource at the specified index. More...
ResourceBundle | get (const char *key, UErrorCode &status) const
| Returns a resource in a resource that has a given key. More...
UnicodeString | getStringEx (const char *key, UErrorCode &status) const
| Returns a string in a resource that has a given key. More...
const char * | getVersionNumber () const
| Return the version number associated with this ResourceBundle as a string. More...
void | getVersion (UVersionInfo versionInfo) const
| Return the version number associated with this ResourceBundle as a UVersionInfo array. More...
const Locale & | getLocale () const
| Return the Locale associated with this ResourceBundle. More...
const Locale | getLocale (ULocDataLocaleType type, UErrorCode &status) const
| Return the Locale associated with this ResourceBundle. More...
ResourceBundle | getWithFallback (const char *key, UErrorCode &status)
| This API implements multilevel fallback. More...
virtual UClassID | getDynamicClassID () const override
| ICU "poor man's RTTI", returns a UClassID for the actual class. More...
Public Member Functions inherited from icu::UObject
virtual | ~UObject ()
| Destructor. More...

## Static Public Member Functions

static UClassID | getStaticClassID ()
| ICU "poor man's RTTI", returns a UClassID for this class. More...

## Detailed Description

A class representing a collection of resource information pertaining to a given locale.

A resource bundle provides a way of accessing locale- specific information in a data file. You create a resource bundle that manages the resources for a given locale and then ask it for individual resources.

Resource bundles in ICU4C are currently defined using text files which conform to the following BNF definition. More on resource bundle concepts and syntax can be found in the Users Guide.

The ResourceBundle class is not suitable for subclassing.

Stable:
  ICU 2.0

Definition at line 83 of file resbund.h.

## Constructor & Destructor Documentation

## ResourceBundle() [1/6]

icu::ResourceBundle::ResourceBundle | ( | const UnicodeString & | packageName,
|  | const Locale & | locale,
|  | UErrorCode & | err
| ) |  |

Constructor.

Parameters

  packageName | The packageName and locale together point to an ICU udata object, as defined by `udata_open( packageName, "res", locale, err)` or equivalent. Typically, packageName will refer to a (.dat) file, or to a package registered with udata_setAppData(). Using a full file or directory pathname for packageName is deprecated.

  locale

  This is the locale this resource bundle is for. To get resources for the French locale, for example, you would create a ResourceBundle passing Locale::FRENCH for the "locale" parameter, and all subsequent calls to that resource bundle will return resources that pertain to the French locale. If the caller doesn't pass a locale parameter, the default locale for the system (as returned by Locale::getDefault()) will be used.

  err

  The Error Code. The UErrorCode& err parameter is used to return status information to the user. To check whether the construction succeeded or not, you should check the value of U_SUCCESS(err). If you wish more detailed information, you can check for informational error results which still indicate success. U_USING_FALLBACK_WARNING indicates that a fall back locale was used. For example, 'de_CH' was requested, but nothing was found there, so 'de' was used. U_USING_DEFAULT_WARNING indicates that the default locale data was used; neither the requested locale nor any of its fall back locales could be found.

Stable:
  ICU 2.0

## ResourceBundle() [2/6]

icu::ResourceBundle::ResourceBundle | ( | const UnicodeString & | packageName,
|  | UErrorCode & | err
| ) |  |

Construct a resource bundle for the default bundle in the specified package.

Parameters

  packageName | The packageName and locale together point to an ICU udata object, as defined by `udata_open( packageName, "res", locale, err)` or equivalent. Typically, packageName will refer to a (.dat) file, or to a package registered with udata_setAppData(). Using a full file or directory pathname for packageName is deprecated.
  err | A UErrorCode value

Stable:
  ICU 2.0

## ResourceBundle() [3/6]

icu::ResourceBundle::ResourceBundle | ( | UErrorCode & | err | ) |

Construct a resource bundle for the ICU default bundle.

Parameters

  err | A UErrorCode value

Stable:
  ICU 2.0

## ResourceBundle() [4/6]

icu::ResourceBundle::ResourceBundle | ( | const char * | packageName,
|  | const Locale & | locale,
|  | UErrorCode & | err
| ) |  |

Standard constructor, constructs a resource bundle for the locale-specific bundle in the specified package.

Parameters

  packageName | The packageName and locale together point to an ICU udata object, as defined by `udata_open( packageName, "res", locale, err)` or equivalent. Typically, packageName will refer to a (.dat) file, or to a package registered with udata_setAppData(). Using a full file or directory pathname for packageName is deprecated. nullptr is used to refer to ICU data.
  locale | The locale for which to open a resource bundle.
  err | A UErrorCode value

Stable:
  ICU 2.0

## ResourceBundle() [5/6]

icu::ResourceBundle::ResourceBundle | ( | const ResourceBundle & | original | ) |

Copy constructor.

Parameters

  original | The resource bundle to copy.

Stable:
  ICU 2.0

## ResourceBundle() [6/6]

icu::ResourceBundle::ResourceBundle | ( | UResourceBundle * | res,
|  | UErrorCode & | status
| ) |  |

Constructor from a C UResourceBundle.

The resource bundle is copied and not adopted. ures_close will still need to be used on the original resource bundle.

Parameters

  res | A pointer to the C resource bundle.
  status | A UErrorCode value.

Stable:
  ICU 2.0

## ~ResourceBundle()

virtual icu::ResourceBundle::~ResourceBundle | ( |  | ) |

virtual

Destructor.

Stable:
  ICU 2.0

## Member Function Documentation

## clone()

ResourceBundle* icu::ResourceBundle::clone | ( |  | ) | const

Clone this object.

Clones can be used concurrently in multiple threads. If an error occurs, then nullptr is returned. The caller must delete the clone.

Returns
  a clone of this object

See also
  getDynamicClassID

Stable:
  ICU 2.8

## get() [1/2]

ResourceBundle icu::ResourceBundle::get | ( | const char * | key,
|  | UErrorCode & | status
| ) |  | const

Returns a resource in a resource that has a given key.

This procedure works only with table resources.

Parameters

  key | a key associated with the wanted resource
  status | fills in the outgoing error code.

Returns
  ResourceBundle object. If there is an error, resource is invalid.

Stable:
  ICU 2.0

## get() [2/2]

ResourceBundle icu::ResourceBundle::get | ( | int32_t | index,
|  | UErrorCode & | status
| ) |  | const

Returns the resource in a resource at the specified index.

Parameters

  index | an index to the wanted resource.
  status | fills in the outgoing error code

Returns
  ResourceBundle object. If there is an error, resource is invalid.

Stable:
  ICU 2.0

## getBinary()

const uint8_t* icu::ResourceBundle::getBinary | ( | int32_t & | len,
|  | UErrorCode & | status
| ) |  | const

returns a binary data from a resource.

Can be used at most primitive resource types (binaries, strings, ints)

Parameters

  len | fills in the length of resulting byte chunk
  status | fills in the outgoing error code could be `U_MISSING_RESOURCE_ERROR` if the key is not found could be a warning e.g.: `U_USING_FALLBACK_WARNING`,`U_USING_DEFAULT_WARNING`

Returns
  a pointer to a chunk of unsigned bytes which live in a memory mapped/DLL file.

Stable:
  ICU 2.0

## getDynamicClassID()

virtual UClassID icu::ResourceBundle::getDynamicClassID | ( |  | ) | const

overridevirtual

ICU "poor man's RTTI", returns a UClassID for the actual class.

Stable:
  ICU 2.2

Reimplemented from icu::UObject.

## getInt()

int32_t icu::ResourceBundle::getInt | ( | UErrorCode & | status | ) | const

returns a signed integer from a resource.

This integer is originally 28 bit and the sign gets propagated.

Parameters

  status | fills in the outgoing error code could be `U_MISSING_RESOURCE_ERROR` if the key is not found could be a warning e.g.: `U_USING_FALLBACK_WARNING`,`U_USING_DEFAULT_WARNING`

Returns
  a signed integer value

Stable:
  ICU 2.0

## getIntVector()

const int32_t* icu::ResourceBundle::getIntVector | ( | int32_t & | len,
|  | UErrorCode & | status
| ) |  | const

returns an integer vector from a resource.

Parameters

  len | fills in the length of resulting integer vector
  status | fills in the outgoing error code could be `U_MISSING_RESOURCE_ERROR` if the key is not found could be a warning e.g.: `U_USING_FALLBACK_WARNING`,`U_USING_DEFAULT_WARNING`

Returns
  a pointer to a vector of integers that lives in a memory mapped/DLL file.

Stable:
  ICU 2.0

## getKey()

const char* icu::ResourceBundle::getKey | ( |  | ) | const

Returns the key associated with this resource.

Not all the resources have a key - only those that are members of a table.

Returns
  a key associated to this resource, or nullptr if it doesn't have a key

Stable:
  ICU 2.0

## getLocale() [1/2]

const Locale& icu::ResourceBundle::getLocale | ( |  | ) | const

Return the Locale associated with this ResourceBundle.

Returns
  a Locale object

Deprecated:
  ICU 2.8 Use getLocale(ULocDataLocaleType type, UErrorCode &status) overload instead.

## getLocale() [2/2]

const Locale icu::ResourceBundle::getLocale | ( | ULocDataLocaleType | type,
|  | UErrorCode & | status
| ) |  | const

Return the Locale associated with this ResourceBundle.

Parameters

  type | You can choose between requested, valid and actual locale. For description see the definition of ULocDataLocaleType in uloc.h
  status | just for catching illegal arguments

Returns
  a Locale object

Stable:
  ICU 2.8

## getName()

const char* icu::ResourceBundle::getName | ( |  | ) | const

Gets the locale ID of the resource bundle as a string.

Same as getLocale().getName() .

Returns
  the locale ID of the resource bundle as a string

Stable:
  ICU 2.0

## getNext()

ResourceBundle icu::ResourceBundle::getNext | ( | UErrorCode & | status | ) |

Returns the next resource in a given resource or nullptr if there are no more resources.

Parameters

  status | fills in the outgoing error code

Returns
  ResourceBundle object.

Stable:
  ICU 2.0

## getNextString() [1/2]

UnicodeString icu::ResourceBundle::getNextString | ( | const char ** | key,
|  | UErrorCode & | status
| ) |  |

Returns the next string in a resource or nullptr if there are no more resources to iterate over.

Parameters

  key | fill in for key associated with this string
  status | fills in the outgoing error code

Returns
  an UnicodeString object.

Stable:
  ICU 2.0

## getNextString() [2/2]

UnicodeString icu::ResourceBundle::getNextString | ( | UErrorCode & | status | ) |

Returns the next string in a resource or nullptr if there are no more resources to iterate over.

Parameters

  status | fills in the outgoing error code

Returns
  an UnicodeString object.

Stable:
  ICU 2.0

## getSize()

int32_t icu::ResourceBundle::getSize | ( |  | ) | const

Returns the size of a resource.

Size for scalar types is always 1, and for vector/table types is the number of child resources.

Warning
  Integer array is treated as a scalar type. There are no APIs to access individual members of an integer array. It is always returned as a whole.

Returns
  number of resources in a given resource.

Stable:
  ICU 2.0

## getStaticClassID()

static UClassID icu::ResourceBundle::getStaticClassID | ( |  | ) |

static

ICU "poor man's RTTI", returns a UClassID for this class.

Stable:
  ICU 2.2

## getString()

UnicodeString icu::ResourceBundle::getString | ( | UErrorCode & | status | ) | const

returns a string from a string resource type

Parameters

  status | fills in the outgoing error code could be `U_MISSING_RESOURCE_ERROR` if the key is not found could be a warning e.g.: `U_USING_FALLBACK_WARNING`,`U_USING_DEFAULT_WARNING`

Returns
  a pointer to a zero-terminated char16_t array which lives in a memory mapped/DLL file.

Stable:
  ICU 2.0

## getStringEx() [1/2]

UnicodeString icu::ResourceBundle::getStringEx | ( | const char * | key,
|  | UErrorCode & | status
| ) |  | const

Returns a string in a resource that has a given key.

This procedure works only with table resources.

Parameters

  key | a key associated with the wanted string
  status | fills in the outgoing error code

Returns
  an UnicodeString object. If there is an error, string is bogus

Stable:
  ICU 2.0

## getStringEx() [2/2]

UnicodeString icu::ResourceBundle::getStringEx | ( | int32_t | index,
|  | UErrorCode & | status
| ) |  | const

Returns the string in a given resource at the specified index.

Parameters

  index | an index to the wanted string.
  status | fills in the outgoing error code

Returns
  an UnicodeString object. If there is an error, string is bogus

Stable:
  ICU 2.0

## getType()

UResType icu::ResourceBundle::getType | ( |  | ) | const

Returns the type of a resource.

Available types are defined in enum UResType

Returns
  type of the given resource.

Stable:
  ICU 2.0

## getUInt()

uint32_t icu::ResourceBundle::getUInt | ( | UErrorCode & | status | ) | const

returns an unsigned integer from a resource.

This integer is originally 28 bits.

Parameters

  status | fills in the outgoing error code could be `U_MISSING_RESOURCE_ERROR` if the key is not found could be a warning e.g.: `U_USING_FALLBACK_WARNING`,`U_USING_DEFAULT_WARNING`

Returns
  an unsigned integer value

Stable:
  ICU 2.0

## getVersion()

void icu::ResourceBundle::getVersion | ( | UVersionInfo | versionInfo | ) | const

Return the version number associated with this ResourceBundle as a UVersionInfo array.

Parameters

  versionInfo | A UVersionInfo array that is filled with the version number as specified in the resource bundle or its parent.

Stable:
  ICU 2.0

## getVersionNumber()

const char* icu::ResourceBundle::getVersionNumber | ( |  | ) | const

Return the version number associated with this ResourceBundle as a string.

Please use getVersion, as this method is going to be deprecated.

Returns
  A version number string as specified in the resource bundle or its parent. The caller does not own this string.

See also
  getVersion

Deprecated:
  ICU 2.8 Use getVersion instead.

## getWithFallback()

ResourceBundle icu::ResourceBundle::getWithFallback | ( | const char * | key,
|  | UErrorCode & | status
| ) |  |

This API implements multilevel fallback.

Internal:
  Do not use.

This API is for internal use only.

## hasNext()

UBool icu::ResourceBundle::hasNext | ( |  | ) | const

Checks whether the resource has another element to iterate over.

Returns
  true if there are more elements, false if there is no more elements

Stable:
  ICU 2.0

## operator=()

ResourceBundle& icu::ResourceBundle::operator= | ( | const ResourceBundle & | other | ) |

Assignment operator.

Parameters

  other | The resource bundle to copy.

Stable:
  ICU 2.0

## resetIterator()

void icu::ResourceBundle::resetIterator | ( |  | ) |

Resets the internal context of a resource so that iteration starts from the first element.

Stable:
  ICU 2.0

The documentation for this class was generated from the following file:

- common/unicode/resbund.h