/* ****************************************************************************** * * Copyright (C) 1996-2007, 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" #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- specfic 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="http://source.icu-project.org/repos/icu/icuhtml/trunk/design/bnf_rb.txt">BNF definition</a>. * More on resource bundle concepts and syntax can be found in the * <a href="http://icu-project.org/userguide/ResourceManagement.html">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, onstructs 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. * NULL 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 NULL 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(void) 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 UChar 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(void) const; /** * Resets the internal context of a resource so that iteration starts from the first element. * * @stable ICU 2.0 */ void resetIterator(void); /** * 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 NULL if it doesn't have a key * @stable ICU 2.0 */ const char* getKey(void) 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(void) 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(void) const; /** * Returns the next resource in a given resource or NULL 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 NULL 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 NULL 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; /** * 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(void) const; /** * 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; /** * 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(void) const; /** * 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 */ const Locale getLocale(ULocDataLocaleType type, UErrorCode &status) const; /** * This API implements multilevel fallback * @internal */ ResourceBundle getWithFallback(const char* key, UErrorCode& status); /** * ICU "poor man's RTTI", returns a UClassID for the actual class. * * @stable ICU 2.2 */ virtual UClassID getDynamicClassID() const; /** * ICU "poor man's RTTI", returns a UClassID for this class. * * @stable ICU 2.2 */ static UClassID U_EXPORT2 getStaticClassID(); private: ResourceBundle(); // default constructor not implemented UResourceBundle *fResource; void constructForLocale(const UnicodeString& path, const Locale& locale, UErrorCode& error); Locale *fLocale; }; U_NAMESPACE_END #endif