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// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
**********************************************************************
* Copyright (C) 1997-2016, International Business Machines
* Corporation and others. All Rights Reserved.
**********************************************************************
*
* File URES.H (formerly CRESBUND.H)
*
* Modification History:
*
* Date Name Description
* 04/01/97 aliu Creation.
* 02/22/99 damiba overhaul.
* 04/04/99 helena Fixed internal header inclusion.
* 04/15/99 Madhu Updated Javadoc
* 06/14/99 stephen Removed functions taking a filename suffix.
* 07/20/99 stephen Language-independent typedef to void*
* 11/09/99 weiv Added ures_getLocale()
* 06/24/02 weiv Added support for resource sharing
******************************************************************************
*/
#ifndef URES_H
#define URES_H
#include "unicode/utypes.h"
#include "unicode/uloc.h"
#if U_SHOW_CPLUSPLUS_API
#include "unicode/localpointer.h"
#endif // U_SHOW_CPLUSPLUS_API
/**
* \file
* \brief C API: Resource Bundle
*
* <h2>C API: Resource Bundle</h2>
*
* C API 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>
*/
/**
* UResourceBundle is an opaque type for handles for resource bundles in C APIs.
* @stable ICU 2.0
*/
struct UResourceBundle;
/**
* @stable ICU 2.0
*/
typedef struct UResourceBundle UResourceBundle;
/**
* Numeric constants for types of resource items.
* @see ures_getType
* @stable ICU 2.0
*/
typedef enum {
/** Resource type constant for "no resource". @stable ICU 2.6 */
URES_NONE=-1,
/** Resource type constant for 16-bit Unicode strings. @stable ICU 2.6 */
URES_STRING=0,
/** Resource type constant for binary data. @stable ICU 2.6 */
URES_BINARY=1,
/** Resource type constant for tables of key-value pairs. @stable ICU 2.6 */
URES_TABLE=2,
/**
* Resource type constant for aliases;
* internally stores a string which identifies the actual resource
* storing the data (can be in a different resource bundle).
* Resolved internally before delivering the actual resource through the API.
* @stable ICU 2.6
*/
URES_ALIAS=3,
/**
* Resource type constant for a single 28-bit integer, interpreted as
* signed or unsigned by the ures_getInt() or ures_getUInt() function.
* @see ures_getInt
* @see ures_getUInt
* @stable ICU 2.6
*/
URES_INT=7,
/** Resource type constant for arrays of resources. @stable ICU 2.6 */
URES_ARRAY=8,
/**
* Resource type constant for vectors of 32-bit integers.
* @see ures_getIntVector
* @stable ICU 2.6
*/
URES_INT_VECTOR = 14,
#ifndef U_HIDE_DEPRECATED_API
/** @deprecated ICU 2.6 Use the URES_ constant instead. */
RES_NONE=URES_NONE,
/** @deprecated ICU 2.6 Use the URES_ constant instead. */
RES_STRING=URES_STRING,
/** @deprecated ICU 2.6 Use the URES_ constant instead. */
RES_BINARY=URES_BINARY,
/** @deprecated ICU 2.6 Use the URES_ constant instead. */
RES_TABLE=URES_TABLE,
/** @deprecated ICU 2.6 Use the URES_ constant instead. */
RES_ALIAS=URES_ALIAS,
/** @deprecated ICU 2.6 Use the URES_ constant instead. */
RES_INT=URES_INT,
/** @deprecated ICU 2.6 Use the URES_ constant instead. */
RES_ARRAY=URES_ARRAY,
/** @deprecated ICU 2.6 Use the URES_ constant instead. */
RES_INT_VECTOR=URES_INT_VECTOR,
/** @deprecated ICU 2.6 Not used. */
RES_RESERVED=15,
/**
* One more than the highest normal UResType value.
* @deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420.
*/
URES_LIMIT = 16
#endif // U_HIDE_DEPRECATED_API
} UResType;
/*
* Functions to create and destroy resource bundles.
*/
/**
* Opens a UResourceBundle, from which users can extract strings by using
* their corresponding keys.
* Note that the caller is responsible of calling <TT>ures_close</TT> on each successfully
* opened resource bundle.
* @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. If NULL, ICU data will be used.
* @param locale specifies the locale for which we want to open the resource
* if NULL, the default locale will be used. If strlen(locale) == 0
* root locale will be used.
*
* @param status fills in the outgoing 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 status 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 or root locale data was used; neither the requested locale
* nor any of its fall back locales could be found. Please see the users guide for more
* information on this topic.
* @return a newly allocated resource bundle.
* @see ures_close
* @stable ICU 2.0
*/
U_CAPI UResourceBundle* U_EXPORT2
ures_open(const char* packageName,
const char* locale,
UErrorCode* status);
/** This function does not care what kind of localeID is passed in. It simply opens a bundle with
* that name. Fallback mechanism is disabled for the new bundle. If the requested bundle contains
* an %%ALIAS directive, the results are undefined.
* @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. If NULL, ICU data will be used.
* @param locale specifies the locale for which we want to open the resource
* if NULL, the default locale will be used. If strlen(locale) == 0
* root locale will be used.
*
* @param status fills in the outgoing error code. Either U_ZERO_ERROR or U_MISSING_RESOURCE_ERROR
* @return a newly allocated resource bundle or NULL if it doesn't exist.
* @see ures_close
* @stable ICU 2.0
*/
U_CAPI UResourceBundle* U_EXPORT2
ures_openDirect(const char* packageName,
const char* locale,
UErrorCode* status);
/**
* Same as ures_open() but takes a const UChar *path.
* This path will be converted to char * using the default converter,
* then ures_open() is called.
*
* @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. If NULL, ICU data will be used.
* @param locale specifies the locale for which we want to open the resource
* if NULL, the default locale will be used. If strlen(locale) == 0
* root locale will be used.
* @param status fills in the outgoing error code.
* @return a newly allocated resource bundle.
* @see ures_open
* @stable ICU 2.0
*/
U_CAPI UResourceBundle* U_EXPORT2
ures_openU(const UChar* packageName,
const char* locale,
UErrorCode* status);
#ifndef U_HIDE_DEPRECATED_API
/**
* Returns the number of strings/arrays in resource bundles.
* Better to use ures_getSize, as this function will be deprecated.
*
*@param resourceBundle resource bundle containing the desired strings
*@param resourceKey key tagging the resource
*@param err fills in the outgoing error code
* could be <TT>U_MISSING_RESOURCE_ERROR</TT> if the key is not found
* could be a non-failing error
* e.g.: <TT>U_USING_FALLBACK_WARNING</TT>,<TT>U_USING_FALLBACK_WARNING </TT>
*@return: for <STRONG>Arrays</STRONG>: returns the number of resources in the array
* <STRONG>Tables</STRONG>: returns the number of resources in the table
* <STRONG>single string</STRONG>: returns 1
*@see ures_getSize
* @deprecated ICU 2.8 User ures_getSize instead
*/
U_DEPRECATED int32_t U_EXPORT2
ures_countArrayItems(const UResourceBundle* resourceBundle,
const char* resourceKey,
UErrorCode* err);
#endif /* U_HIDE_DEPRECATED_API */
/**
* Close a resource bundle, all pointers returned from the various ures_getXXX calls
* on this particular bundle should be considered invalid henceforth.
*
* @param resourceBundle a pointer to a resourceBundle struct. Can be NULL.
* @see ures_open
* @stable ICU 2.0
*/
U_CAPI void U_EXPORT2
ures_close(UResourceBundle* resourceBundle);
#if U_SHOW_CPLUSPLUS_API
U_NAMESPACE_BEGIN
/**
* \class LocalUResourceBundlePointer
* "Smart pointer" class, closes a UResourceBundle via ures_close().
* For most methods see the LocalPointerBase base class.
*
* @see LocalPointerBase
* @see LocalPointer
* @stable ICU 4.4
*/
U_DEFINE_LOCAL_OPEN_POINTER(LocalUResourceBundlePointer, UResourceBundle, ures_close);
U_NAMESPACE_END
#endif
#ifndef U_HIDE_DEPRECATED_API
/**
* Return the version number associated with this ResourceBundle as a string. Please
* use ures_getVersion as this function is going to be deprecated.
*
* @param resourceBundle The resource bundle for which the version is checked.
* @return A version number string as specified in the resource bundle or its parent.
* The caller does not own this string.
* @see ures_getVersion
* @deprecated ICU 2.8 Use ures_getVersion instead.
*/
U_DEPRECATED const char* U_EXPORT2
ures_getVersionNumber(const UResourceBundle* resourceBundle);
#endif /* U_HIDE_DEPRECATED_API */
/**
* Return the version number associated with this ResourceBundle as an
* UVersionInfo array.
*
* @param resB The resource bundle for which the version is checked.
* @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
*/
U_CAPI void U_EXPORT2
ures_getVersion(const UResourceBundle* resB,
UVersionInfo versionInfo);
#ifndef U_HIDE_DEPRECATED_API
/**
* Return the name of the Locale associated with this ResourceBundle. This API allows
* you to query for the real locale of the resource. For example, if you requested
* "en_US_CALIFORNIA" and only "en_US" bundle exists, "en_US" will be returned.
* For subresources, the locale where this resource comes from will be returned.
* If fallback has occurred, getLocale will reflect this.
*
* @param resourceBundle resource bundle in question
* @param status just for catching illegal arguments
* @return A Locale name
* @deprecated ICU 2.8 Use ures_getLocaleByType instead.
*/
U_DEPRECATED const char* U_EXPORT2
ures_getLocale(const UResourceBundle* resourceBundle,
UErrorCode* status);
#endif /* U_HIDE_DEPRECATED_API */
/**
* Return the name of the Locale associated with this ResourceBundle.
* You can choose between requested, valid and real locale.
*
* @param resourceBundle resource bundle in question
* @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 name
* @stable ICU 2.8
*/
U_CAPI const char* U_EXPORT2
ures_getLocaleByType(const UResourceBundle* resourceBundle,
ULocDataLocaleType type,
UErrorCode* status);
#ifndef U_HIDE_INTERNAL_API
/**
* Same as ures_open() but uses the fill-in parameter instead of allocating a new bundle.
*
* TODO need to revisit usefulness of this function
* and usage model for fillIn parameters without knowing sizeof(UResourceBundle)
* @param r The existing UResourceBundle to fill in. If NULL then status will be
* set to U_ILLEGAL_ARGUMENT_ERROR.
* @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. If NULL, ICU data will be used.
* @param localeID specifies the locale for which we want to open the resource
* @param status The error code.
* @internal
*/
U_CAPI void U_EXPORT2
ures_openFillIn(UResourceBundle *r,
const char* packageName,
const char* localeID,
UErrorCode* status);
#endif /* U_HIDE_INTERNAL_API */
/**
* Returns a string from a string resource type
*
* @param resourceBundle a string resource
* @param len fills in the length of resulting string
* @param status fills in the outgoing error code
* could be <TT>U_MISSING_RESOURCE_ERROR</TT> if the key is not found
* Always check the value of status. Don't count on returning NULL.
* could be a non-failing error
* 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.
* @see ures_getBinary
* @see ures_getIntVector
* @see ures_getInt
* @see ures_getUInt
* @stable ICU 2.0
*/
U_CAPI const UChar* U_EXPORT2
ures_getString(const UResourceBundle* resourceBundle,
int32_t* len,
UErrorCode* status);
/**
* Returns a UTF-8 string from a string resource.
* The UTF-8 string may be returnable directly as a pointer, or
* it may need to be copied, or transformed from UTF-16 using u_strToUTF8()
* or equivalent.
*
* If forceCopy==true, then the string is always written to the dest buffer
* and dest is returned.
*
* If forceCopy==false, then the string is returned as a pointer if possible,
* without needing a dest buffer (it can be NULL). If the string needs to be
* copied or transformed, then it may be placed into dest at an arbitrary offset.
*
* If the string is to be written to dest, then U_BUFFER_OVERFLOW_ERROR and
* U_STRING_NOT_TERMINATED_WARNING are set if appropriate, as usual.
*
* If the string is transformed from UTF-16, then a conversion error may occur
* if an unpaired surrogate is encountered. If the function is successful, then
* the output UTF-8 string is always well-formed.
*
* @param resB Resource bundle.
* @param dest Destination buffer. Can be NULL only if capacity=*length==0.
* @param length Input: Capacity of destination buffer.
* Output: Actual length of the UTF-8 string, not counting the
* terminating NUL, even in case of U_BUFFER_OVERFLOW_ERROR.
* Can be NULL, meaning capacity=0 and the string length is not
* returned to the caller.
* @param forceCopy If true, then the output string will always be written to
* dest, with U_BUFFER_OVERFLOW_ERROR and
* U_STRING_NOT_TERMINATED_WARNING set if appropriate.
* If false, then the dest buffer may or may not contain a
* copy of the string. dest may or may not be modified.
* If a copy needs to be written, then the UErrorCode parameter
* indicates overflow etc. as usual.
* @param status Pointer to a standard ICU error code. Its input value must
* pass the U_SUCCESS() test, or else the function returns
* immediately. Check for U_FAILURE() on output or use with
* function chaining. (See User Guide for details.)
* @return The pointer to the UTF-8 string. It may be dest, or at some offset
* from dest (only if !forceCopy), or in unrelated memory.
* Always NUL-terminated unless the string was written to dest and
* length==capacity (in which case U_STRING_NOT_TERMINATED_WARNING is set).
*
* @see ures_getString
* @see u_strToUTF8
* @stable ICU 3.6
*/
U_CAPI const char * U_EXPORT2
ures_getUTF8String(const UResourceBundle *resB,
char *dest, int32_t *length,
UBool forceCopy,
UErrorCode *status);
/**
* Returns a binary data from a binary resource.
*
* @param resourceBundle a string resource
* @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
* Always check the value of status. Don't count on returning NULL.
* could be a non-failing error
* 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.
* @see ures_getString
* @see ures_getIntVector
* @see ures_getInt
* @see ures_getUInt
* @stable ICU 2.0
*/
U_CAPI const uint8_t* U_EXPORT2
ures_getBinary(const UResourceBundle* resourceBundle,
int32_t* len,
UErrorCode* status);
/**
* Returns a 32 bit integer array from a resource.
*
* @param resourceBundle an int vector resource
* @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
* Always check the value of status. Don't count on returning NULL.
* could be a non-failing error
* e.g.: <TT>U_USING_FALLBACK_WARNING</TT>,<TT>U_USING_DEFAULT_WARNING </TT>
* @return a pointer to a chunk of integers which live in a memory mapped/DLL file.
* @see ures_getBinary
* @see ures_getString
* @see ures_getInt
* @see ures_getUInt
* @stable ICU 2.0
*/
U_CAPI const int32_t* U_EXPORT2
ures_getIntVector(const UResourceBundle* resourceBundle,
int32_t* len,
UErrorCode* status);
/**
* Returns an unsigned integer from a resource.
* This integer is originally 28 bits.
*
* @param resourceBundle a string resource
* @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 non-failing error
* e.g.: <TT>U_USING_FALLBACK_WARNING</TT>,<TT>U_USING_DEFAULT_WARNING </TT>
* @return an integer value
* @see ures_getInt
* @see ures_getIntVector
* @see ures_getBinary
* @see ures_getString
* @stable ICU 2.0
*/
U_CAPI uint32_t U_EXPORT2
ures_getUInt(const UResourceBundle* resourceBundle,
UErrorCode *status);
/**
* Returns a signed integer from a resource.
* This integer is originally 28 bit and the sign gets propagated.
*
* @param resourceBundle a string resource
* @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 non-failing error
* e.g.: <TT>U_USING_FALLBACK_WARNING</TT>,<TT>U_USING_DEFAULT_WARNING </TT>
* @return an integer value
* @see ures_getUInt
* @see ures_getIntVector
* @see ures_getBinary
* @see ures_getString
* @stable ICU 2.0
*/
U_CAPI int32_t U_EXPORT2
ures_getInt(const UResourceBundle* resourceBundle,
UErrorCode *status);
/**
* 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.
* @param resourceBundle a resource
* @return number of resources in a given resource.
* @stable ICU 2.0
*/
U_CAPI int32_t U_EXPORT2
ures_getSize(const UResourceBundle *resourceBundle);
/**
* Returns the type of a resource. Available types are defined in enum UResType
*
* @param resourceBundle a resource
* @return type of the given resource.
* @see UResType
* @stable ICU 2.0
*/
U_CAPI UResType U_EXPORT2
ures_getType(const UResourceBundle *resourceBundle);
/**
* Returns the key associated with a given resource. Not all the resources have a key - only
* those that are members of a table.
*
* @param resourceBundle a resource
* @return a key associated to this resource, or NULL if it doesn't have a key
* @stable ICU 2.0
*/
U_CAPI const char * U_EXPORT2
ures_getKey(const UResourceBundle *resourceBundle);
/* ITERATION API
This API provides means for iterating through a resource
*/
/**
* Resets the internal context of a resource so that iteration starts from the first element.
*
* @param resourceBundle a resource
* @stable ICU 2.0
*/
U_CAPI void U_EXPORT2
ures_resetIterator(UResourceBundle *resourceBundle);
/**
* Checks whether the given resource has another element to iterate over.
*
* @param resourceBundle a resource
* @return true if there are more elements, false if there is no more elements
* @stable ICU 2.0
*/
U_CAPI UBool U_EXPORT2
ures_hasNext(const UResourceBundle *resourceBundle);
/**
* Returns the next resource in a given resource or NULL if there are no more resources
* to iterate over. Features a fill-in parameter.
*
* @param resourceBundle a resource
* @param fillIn if NULL a new UResourceBundle struct is allocated and must be closed by the caller.
* Alternatively, you can supply a struct to be filled by this function.
* @param status fills in the outgoing error code. You may still get a non NULL result even if an
* error occurred. Check status instead.
* @return a pointer to a UResourceBundle struct. If fill in param was NULL, caller must close it
* @stable ICU 2.0
*/
U_CAPI UResourceBundle* U_EXPORT2
ures_getNextResource(UResourceBundle *resourceBundle,
UResourceBundle *fillIn,
UErrorCode *status);
/**
* Returns the next string in a given resource or NULL if there are no more resources
* to iterate over.
*
* @param resourceBundle a resource
* @param len fill in length of the string
* @param key fill in for key associated with this string. NULL if no key
* @param status fills in the outgoing error code. If an error occurred, we may return NULL, but don't
* count on it. Check status instead!
* @return a pointer to a zero-terminated UChar array which lives in a memory mapped/DLL file.
* @stable ICU 2.0
*/
U_CAPI const UChar* U_EXPORT2
ures_getNextString(UResourceBundle *resourceBundle,
int32_t* len,
const char ** key,
UErrorCode *status);
/**
* Returns the resource in a given resource at the specified index. Features a fill-in parameter.
*
* @param resourceBundle the resource bundle from which to get a sub-resource
* @param indexR an index to the wanted resource.
* @param fillIn if NULL a new UResourceBundle struct is allocated and must be closed by the caller.
* Alternatively, you can supply a struct to be filled by this function.
* @param status fills in the outgoing error code. Don't count on NULL being returned if an error has
* occurred. Check status instead.
* @return a pointer to a UResourceBundle struct. If fill in param was NULL, caller must close it
* @stable ICU 2.0
*/
U_CAPI UResourceBundle* U_EXPORT2
ures_getByIndex(const UResourceBundle *resourceBundle,
int32_t indexR,
UResourceBundle *fillIn,
UErrorCode *status);
/**
* Returns the string in a given resource at the specified index.
*
* @param resourceBundle a resource
* @param indexS an index to the wanted string.
* @param len fill in length of the string
* @param status fills in the outgoing error code. If an error occurred, we may return NULL, but don't
* count on it. Check status instead!
* @return a pointer to a zero-terminated UChar array which lives in a memory mapped/DLL file.
* @stable ICU 2.0
*/
U_CAPI const UChar* U_EXPORT2
ures_getStringByIndex(const UResourceBundle *resourceBundle,
int32_t indexS,
int32_t* len,
UErrorCode *status);
/**
* Returns a UTF-8 string from a resource at the specified index.
* The UTF-8 string may be returnable directly as a pointer, or
* it may need to be copied, or transformed from UTF-16 using u_strToUTF8()
* or equivalent.
*
* If forceCopy==true, then the string is always written to the dest buffer
* and dest is returned.
*
* If forceCopy==false, then the string is returned as a pointer if possible,
* without needing a dest buffer (it can be NULL). If the string needs to be
* copied or transformed, then it may be placed into dest at an arbitrary offset.
*
* If the string is to be written to dest, then U_BUFFER_OVERFLOW_ERROR and
* U_STRING_NOT_TERMINATED_WARNING are set if appropriate, as usual.
*
* If the string is transformed from UTF-16, then a conversion error may occur
* if an unpaired surrogate is encountered. If the function is successful, then
* the output UTF-8 string is always well-formed.
*
* @param resB Resource bundle.
* @param stringIndex An index to the wanted string.
* @param dest Destination buffer. Can be NULL only if capacity=*length==0.
* @param pLength Input: Capacity of destination buffer.
* Output: Actual length of the UTF-8 string, not counting the
* terminating NUL, even in case of U_BUFFER_OVERFLOW_ERROR.
* Can be NULL, meaning capacity=0 and the string length is not
* returned to the caller.
* @param forceCopy If true, then the output string will always be written to
* dest, with U_BUFFER_OVERFLOW_ERROR and
* U_STRING_NOT_TERMINATED_WARNING set if appropriate.
* If false, then the dest buffer may or may not contain a
* copy of the string. dest may or may not be modified.
* If a copy needs to be written, then the UErrorCode parameter
* indicates overflow etc. as usual.
* @param status Pointer to a standard ICU error code. Its input value must
* pass the U_SUCCESS() test, or else the function returns
* immediately. Check for U_FAILURE() on output or use with
* function chaining. (See User Guide for details.)
* @return The pointer to the UTF-8 string. It may be dest, or at some offset
* from dest (only if !forceCopy), or in unrelated memory.
* Always NUL-terminated unless the string was written to dest and
* length==capacity (in which case U_STRING_NOT_TERMINATED_WARNING is set).
*
* @see ures_getStringByIndex
* @see u_strToUTF8
* @stable ICU 3.6
*/
U_CAPI const char * U_EXPORT2
ures_getUTF8StringByIndex(const UResourceBundle *resB,
int32_t stringIndex,
char *dest, int32_t *pLength,
UBool forceCopy,
UErrorCode *status);
/**
* Returns a resource in a given resource that has a given key. This procedure works only with table
* resources. Features a fill-in parameter.
*
* @param resourceBundle a resource
* @param key a key associated with the wanted resource
* @param fillIn if NULL a new UResourceBundle struct is allocated and must be closed by the caller.
* Alternatively, you can supply a struct to be filled by this function.
* @param status fills in the outgoing error code.
* @return a pointer to a UResourceBundle struct. If fill in param was NULL, caller must close it
* @stable ICU 2.0
*/
U_CAPI UResourceBundle* U_EXPORT2
ures_getByKey(const UResourceBundle *resourceBundle,
const char* key,
UResourceBundle *fillIn,
UErrorCode *status);
/**
* Returns a string in a given resource that has a given key. This procedure works only with table
* resources.
*
* @param resB a resource
* @param key a key associated with the wanted string
* @param len fill in length of the string
* @param status fills in the outgoing error code. If an error occurred, we may return NULL, but don't
* count on it. Check status instead!
* @return a pointer to a zero-terminated UChar array which lives in a memory mapped/DLL file.
* @stable ICU 2.0
*/
U_CAPI const UChar* U_EXPORT2
ures_getStringByKey(const UResourceBundle *resB,
const char* key,
int32_t* len,
UErrorCode *status);
/**
* Returns a UTF-8 string from a resource and a key.
* This function works only with table resources.
*
* The UTF-8 string may be returnable directly as a pointer, or
* it may need to be copied, or transformed from UTF-16 using u_strToUTF8()
* or equivalent.
*
* If forceCopy==true, then the string is always written to the dest buffer
* and dest is returned.
*
* If forceCopy==false, then the string is returned as a pointer if possible,
* without needing a dest buffer (it can be NULL). If the string needs to be
* copied or transformed, then it may be placed into dest at an arbitrary offset.
*
* If the string is to be written to dest, then U_BUFFER_OVERFLOW_ERROR and
* U_STRING_NOT_TERMINATED_WARNING are set if appropriate, as usual.
*
* If the string is transformed from UTF-16, then a conversion error may occur
* if an unpaired surrogate is encountered. If the function is successful, then
* the output UTF-8 string is always well-formed.
*
* @param resB Resource bundle.
* @param key A key associated with the wanted resource
* @param dest Destination buffer. Can be NULL only if capacity=*length==0.
* @param pLength Input: Capacity of destination buffer.
* Output: Actual length of the UTF-8 string, not counting the
* terminating NUL, even in case of U_BUFFER_OVERFLOW_ERROR.
* Can be NULL, meaning capacity=0 and the string length is not
* returned to the caller.
* @param forceCopy If true, then the output string will always be written to
* dest, with U_BUFFER_OVERFLOW_ERROR and
* U_STRING_NOT_TERMINATED_WARNING set if appropriate.
* If false, then the dest buffer may or may not contain a
* copy of the string. dest may or may not be modified.
* If a copy needs to be written, then the UErrorCode parameter
* indicates overflow etc. as usual.
* @param status Pointer to a standard ICU error code. Its input value must
* pass the U_SUCCESS() test, or else the function returns
* immediately. Check for U_FAILURE() on output or use with
* function chaining. (See User Guide for details.)
* @return The pointer to the UTF-8 string. It may be dest, or at some offset
* from dest (only if !forceCopy), or in unrelated memory.
* Always NUL-terminated unless the string was written to dest and
* length==capacity (in which case U_STRING_NOT_TERMINATED_WARNING is set).
*
* @see ures_getStringByKey
* @see u_strToUTF8
* @stable ICU 3.6
*/
U_CAPI const char * U_EXPORT2
ures_getUTF8StringByKey(const UResourceBundle *resB,
const char *key,
char *dest, int32_t *pLength,
UBool forceCopy,
UErrorCode *status);
#if U_SHOW_CPLUSPLUS_API
#include "unicode/unistr.h"
U_NAMESPACE_BEGIN
/**
* Returns the string value from a string resource bundle.
*
* @param resB a resource, should have type URES_STRING
* @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 non-failing error
* e.g.: <TT>U_USING_FALLBACK_WARNING</TT>,<TT>U_USING_DEFAULT_WARNING </TT>
* @return The string value, or a bogus string if there is a failure UErrorCode.
* @stable ICU 2.0
*/
inline UnicodeString
ures_getUnicodeString(const UResourceBundle *resB, UErrorCode* status) {
UnicodeString result;
int32_t len = 0;
const UChar *r = ures_getString(resB, &len, status);
if(U_SUCCESS(*status)) {
result.setTo(true, r, len);
} else {
result.setToBogus();
}
return result;
}
/**
* Returns the next string in a resource, or an empty string if there are no more resources
* to iterate over.
* Use ures_getNextString() instead to distinguish between
* the end of the iteration and a real empty string value.
*
* @param resB a resource
* @param key fill in for key associated with this string
* @param status fills in the outgoing error code
* @return The string value, or a bogus string if there is a failure UErrorCode.
* @stable ICU 2.0
*/
inline UnicodeString
ures_getNextUnicodeString(UResourceBundle *resB, const char ** key, UErrorCode* status) {
UnicodeString result;
int32_t len = 0;
const UChar* r = ures_getNextString(resB, &len, key, status);
if(U_SUCCESS(*status)) {
result.setTo(true, r, len);
} else {
result.setToBogus();
}
return result;
}
/**
* Returns the string in a given resource array or table at the specified index.
*
* @param resB a resource
* @param indexS an index to the wanted string.
* @param status fills in the outgoing error code
* @return The string value, or a bogus string if there is a failure UErrorCode.
* @stable ICU 2.0
*/
inline UnicodeString
ures_getUnicodeStringByIndex(const UResourceBundle *resB, int32_t indexS, UErrorCode* status) {
UnicodeString result;
int32_t len = 0;
const UChar* r = ures_getStringByIndex(resB, indexS, &len, status);
if(U_SUCCESS(*status)) {
result.setTo(true, r, len);
} else {
result.setToBogus();
}
return result;
}
/**
* Returns a string in a resource that has a given key.
* This procedure works only with table resources.
*
* @param resB a resource
* @param key a key associated with the wanted string
* @param status fills in the outgoing error code
* @return The string value, or a bogus string if there is a failure UErrorCode.
* @stable ICU 2.0
*/
inline UnicodeString
ures_getUnicodeStringByKey(const UResourceBundle *resB, const char* key, UErrorCode* status) {
UnicodeString result;
int32_t len = 0;
const UChar* r = ures_getStringByKey(resB, key, &len, status);
if(U_SUCCESS(*status)) {
result.setTo(true, r, len);
} else {
result.setToBogus();
}
return result;
}
U_NAMESPACE_END
#endif
/**
* Create a string enumerator, owned by the caller, of all locales located within
* the specified resource tree.
* @param packageName name of the tree, such as (NULL) or U_ICUDATA_ALIAS or or "ICUDATA-coll"
* This call is similar to uloc_getAvailable().
* @param status error code
* @stable ICU 3.2
*/
U_CAPI UEnumeration* U_EXPORT2
ures_openAvailableLocales(const char *packageName, UErrorCode *status);
#endif /*_URES*/
/*eof*/
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