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thirdparty/icu4c/common/unicode/resbund.h vendored Normal file
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// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
******************************************************************************
*
* Copyright (C) 1996-2013, International Business Machines Corporation
* and others. All Rights Reserved.
*
******************************************************************************
*
* File resbund.h
*
* CREATED BY
* Richard Gillam
*
* Modification History:
*
* Date Name Description
* 2/5/97 aliu Added scanForLocaleInFile. Added
* constructor which attempts to read resource bundle
* from a specific file, without searching other files.
* 2/11/97 aliu Added UErrorCode return values to constructors. Fixed
* infinite loops in scanForFile and scanForLocale.
* Modified getRawResourceData to not delete storage
* in localeData and resourceData which it doesn't own.
* Added Mac compatibility #ifdefs for tellp() and
* ios::nocreate.
* 2/18/97 helena Updated with 100% documentation coverage.
* 3/13/97 aliu Rewrote to load in entire resource bundle and store
* it as a Hashtable of ResourceBundleData objects.
* Added state table to govern parsing of files.
* Modified to load locale index out of new file
* distinct from default.txt.
* 3/25/97 aliu Modified to support 2-d arrays, needed for timezone
* data. Added support for custom file suffixes. Again,
* needed to support timezone data.
* 4/7/97 aliu Cleaned up.
* 03/02/99 stephen Removed dependency on FILE*.
* 03/29/99 helena Merged Bertrand and Stephen's changes.
* 06/11/99 stephen Removed parsing of .txt files.
* Reworked to use new binary format.
* Cleaned up.
* 06/14/99 stephen Removed methods taking a filename suffix.
* 11/09/99 weiv Added getLocale(), fRealLocale, removed fRealLocaleID
******************************************************************************
*/
#ifndef RESBUND_H
#define RESBUND_H
#include "unicode/utypes.h"
#if U_SHOW_CPLUSPLUS_API
#include "unicode/uobject.h"
#include "unicode/ures.h"
#include "unicode/unistr.h"
#include "unicode/locid.h"
/**
* \file
* \brief C++ API: Resource Bundle
*/
U_NAMESPACE_BEGIN
/**
* 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.
* <P>
* Resource bundles in ICU4C are currently defined using text files which conform to the following
* <a href="https://github.com/unicode-org/icu-docs/blob/main/design/bnf_rb.txt">BNF definition</a>.
* More on resource bundle concepts and syntax can be found in the
* <a href="https://unicode-org.github.io/icu/userguide/locale/resources">Users Guide</a>.
* <P>
*
* The ResourceBundle class is not suitable for subclassing.
*
* @stable ICU 2.0
*/
class U_COMMON_API ResourceBundle : public UObject {
public:
/**
* Constructor
*
* @param packageName The packageName and locale together point to an ICU udata object,
* as defined by <code> udata_open( packageName, "res", locale, err) </code>
* 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.
* @param 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.
* @param 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(const UnicodeString& packageName,
const Locale& locale,
UErrorCode& err);
/**
* Construct a resource bundle for the default bundle in the specified package.
*
* @param packageName The packageName and locale together point to an ICU udata object,
* as defined by <code> udata_open( packageName, "res", locale, err) </code>
* 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.
* @param err A UErrorCode value
* @stable ICU 2.0
*/
ResourceBundle(const UnicodeString& packageName,
UErrorCode& err);
/**
* Construct a resource bundle for the ICU default bundle.
*
* @param err A UErrorCode value
* @stable ICU 2.0
*/
ResourceBundle(UErrorCode &err);
/**
* Standard constructor, constructs a resource bundle for the locale-specific
* bundle in the specified package.
*
* @param packageName The packageName and locale together point to an ICU udata object,
* as defined by <code> udata_open( packageName, "res", locale, err) </code>
* 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.
* @param locale The locale for which to open a resource bundle.
* @param err A UErrorCode value
* @stable ICU 2.0
*/
ResourceBundle(const char* packageName,
const Locale& locale,
UErrorCode& err);
/**
* Copy constructor.
*
* @param original The resource bundle to copy.
* @stable ICU 2.0
*/
ResourceBundle(const ResourceBundle &original);
/**
* 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.
*
* @param res A pointer to the C resource bundle.
* @param status A UErrorCode value.
* @stable ICU 2.0
*/
ResourceBundle(UResourceBundle *res,
UErrorCode &status);
/**
* Assignment operator.
*
* @param other The resource bundle to copy.
* @stable ICU 2.0
*/
ResourceBundle&
operator=(const ResourceBundle& other);
/** Destructor.
* @stable ICU 2.0
*/
virtual ~ResourceBundle();
/**
* 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.
*
* @return a clone of this object
*
* @see getDynamicClassID
* @stable ICU 2.8
*/
ResourceBundle *clone() 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.
*
* @return number of resources in a given resource.
* @stable ICU 2.0
*/
int32_t getSize() const;
/**
* returns a string from a string resource type
*
* @param status fills in the outgoing error code
* could be <TT>U_MISSING_RESOURCE_ERROR</TT> if the key is not found
* could be a warning
* e.g.: <TT>U_USING_FALLBACK_WARNING</TT>,<TT>U_USING_DEFAULT_WARNING </TT>
* @return a pointer to a zero-terminated char16_t array which lives in a memory mapped/DLL file.
* @stable ICU 2.0
*/
UnicodeString
getString(UErrorCode& status) const;
/**
* returns a binary data from a resource. Can be used at most primitive resource types (binaries,
* strings, ints)
*
* @param len fills in the length of resulting byte chunk
* @param status fills in the outgoing error code
* could be <TT>U_MISSING_RESOURCE_ERROR</TT> if the key is not found
* could be a warning
* e.g.: <TT>U_USING_FALLBACK_WARNING</TT>,<TT>U_USING_DEFAULT_WARNING </TT>
* @return a pointer to a chunk of unsigned bytes which live in a memory mapped/DLL file.
* @stable ICU 2.0
*/
const uint8_t*
getBinary(int32_t& len, UErrorCode& status) const;
/**
* returns an integer vector from a resource.
*
* @param len fills in the length of resulting integer vector
* @param status fills in the outgoing error code
* could be <TT>U_MISSING_RESOURCE_ERROR</TT> if the key is not found
* could be a warning
* e.g.: <TT>U_USING_FALLBACK_WARNING</TT>,<TT>U_USING_DEFAULT_WARNING </TT>
* @return a pointer to a vector of integers that lives in a memory mapped/DLL file.
* @stable ICU 2.0
*/
const int32_t*
getIntVector(int32_t& len, UErrorCode& status) const;
/**
* returns an unsigned integer from a resource.
* This integer is originally 28 bits.
*
* @param status fills in the outgoing error code
* could be <TT>U_MISSING_RESOURCE_ERROR</TT> if the key is not found
* could be a warning
* e.g.: <TT>U_USING_FALLBACK_WARNING</TT>,<TT>U_USING_DEFAULT_WARNING </TT>
* @return an unsigned integer value
* @stable ICU 2.0
*/
uint32_t
getUInt(UErrorCode& status) const;
/**
* returns a signed integer from a resource.
* This integer is originally 28 bit and the sign gets propagated.
*
* @param status fills in the outgoing error code
* could be <TT>U_MISSING_RESOURCE_ERROR</TT> if the key is not found
* could be a warning
* e.g.: <TT>U_USING_FALLBACK_WARNING</TT>,<TT>U_USING_DEFAULT_WARNING </TT>
* @return a signed integer value
* @stable ICU 2.0
*/
int32_t
getInt(UErrorCode& status) const;
/**
* Checks whether the resource has another element to iterate over.
*
* @return true if there are more elements, false if there is no more elements
* @stable ICU 2.0
*/
UBool hasNext() const;
/**
* Resets the internal context of a resource so that iteration starts from the first element.
*
* @stable ICU 2.0
*/
void resetIterator();
/**
* Returns the key associated with this resource. Not all the resources have a key - only
* those that are members of a table.
*
* @return a key associated to this resource, or nullptr if it doesn't have a key
* @stable ICU 2.0
*/
const char* getKey() const;
/**
* Gets the locale ID of the resource bundle as a string.
* Same as getLocale().getName() .
*
* @return the locale ID of the resource bundle as a string
* @stable ICU 2.0
*/
const char* getName() const;
/**
* Returns the type of a resource. Available types are defined in enum UResType
*
* @return type of the given resource.
* @stable ICU 2.0
*/
UResType getType() const;
/**
* Returns the next resource in a given resource or nullptr if there are no more resources
*
* @param status fills in the outgoing error code
* @return ResourceBundle object.
* @stable ICU 2.0
*/
ResourceBundle
getNext(UErrorCode& status);
/**
* Returns the next string in a resource or nullptr if there are no more resources
* to iterate over.
*
* @param status fills in the outgoing error code
* @return an UnicodeString object.
* @stable ICU 2.0
*/
UnicodeString
getNextString(UErrorCode& status);
/**
* Returns the next string in a resource or nullptr if there are no more resources
* to iterate over.
*
* @param key fill in for key associated with this string
* @param status fills in the outgoing error code
* @return an UnicodeString object.
* @stable ICU 2.0
*/
UnicodeString
getNextString(const char ** key,
UErrorCode& status);
/**
* Returns the resource in a resource at the specified index.
*
* @param index an index to the wanted resource.
* @param status fills in the outgoing error code
* @return ResourceBundle object. If there is an error, resource is invalid.
* @stable ICU 2.0
*/
ResourceBundle
get(int32_t index,
UErrorCode& status) const;
/**
* Returns the string in a given resource at the specified index.
*
* @param index an index to the wanted string.
* @param status fills in the outgoing error code
* @return an UnicodeString object. If there is an error, string is bogus
* @stable ICU 2.0
*/
UnicodeString
getStringEx(int32_t index,
UErrorCode& status) const;
/**
* Returns a resource in a resource that has a given key. This procedure works only with table
* resources.
*
* @param key a key associated with the wanted resource
* @param status fills in the outgoing error code.
* @return ResourceBundle object. If there is an error, resource is invalid.
* @stable ICU 2.0
*/
ResourceBundle
get(const char* key,
UErrorCode& status) const;
/**
* Returns a string in a resource that has a given key. This procedure works only with table
* resources.
*
* @param key a key associated with the wanted string
* @param status fills in the outgoing error code
* @return an UnicodeString object. If there is an error, string is bogus
* @stable ICU 2.0
*/
UnicodeString
getStringEx(const char* key,
UErrorCode& status) const;
#ifndef U_HIDE_DEPRECATED_API
/**
* Return the version number associated with this ResourceBundle as a string. Please
* use getVersion, as this method is going to be deprecated.
*
* @return A version number string as specified in the resource bundle or its parent.
* The caller does not own this string.
* @see getVersion
* @deprecated ICU 2.8 Use getVersion instead.
*/
const char* getVersionNumber() const;
#endif /* U_HIDE_DEPRECATED_API */
/**
* Return the version number associated with this ResourceBundle as a UVersionInfo array.
*
* @param versionInfo A UVersionInfo array that is filled with the version number
* as specified in the resource bundle or its parent.
* @stable ICU 2.0
*/
void
getVersion(UVersionInfo versionInfo) const;
#ifndef U_HIDE_DEPRECATED_API
/**
* Return the Locale associated with this ResourceBundle.
*
* @return a Locale object
* @deprecated ICU 2.8 Use getLocale(ULocDataLocaleType type, UErrorCode &status) overload instead.
*/
const Locale& getLocale() const;
#endif /* U_HIDE_DEPRECATED_API */
/**
* Return the Locale associated with this ResourceBundle.
* @param type You can choose between requested, valid and actual
* locale. For description see the definition of
* ULocDataLocaleType in uloc.h
* @param status just for catching illegal arguments
*
* @return a Locale object
* @stable ICU 2.8
*/
Locale
getLocale(ULocDataLocaleType type, UErrorCode &status) const;
#ifndef U_HIDE_INTERNAL_API
/**
* This API implements multilevel fallback
* @internal
*/
ResourceBundle
getWithFallback(const char* key, UErrorCode& status);
#endif /* U_HIDE_INTERNAL_API */
/**
* ICU "poor man's RTTI", returns a UClassID for the actual class.
*
* @stable ICU 2.2
*/
virtual UClassID getDynamicClassID() const override;
/**
* ICU "poor man's RTTI", returns a UClassID for this class.
*
* @stable ICU 2.2
*/
static UClassID U_EXPORT2 getStaticClassID();
private:
ResourceBundle() = delete; // default constructor not implemented
UResourceBundle *fResource;
void constructForLocale(const UnicodeString& path, const Locale& locale, UErrorCode& error);
Locale *fLocale;
};
U_NAMESPACE_END
#endif /* U_SHOW_CPLUSPLUS_API */
#endif