/*
******************************************************************************
*
-* Copyright (C) 1999-2006, International Business Machines
+* Copyright (C) 1999-2014, International Business Machines
* Corporation and others. All Rights Reserved.
*
******************************************************************************
#define __UDATA_H__
#include "unicode/utypes.h"
+#include "unicode/localpointer.h"
U_CDECL_BEGIN
* <p>This structure may grow in the future, indicated by the
* <code>size</code> field.</p>
*
+ * <p>ICU data must be at least 8-aligned, and should be 16-aligned.
+ * The UDataInfo struct begins 4 bytes after the start of the data item,
+ * so it is 4-aligned.
+ *
* <p>The platform data property fields help determine if a data
* file can be efficiently used on a given machine.
* The particular fields are of importance only if the data
*
* <p>The <code>formatVersion</code> field should be used to
* make sure that the format can be interpreted.
- * I may be a good idea to check only for the one or two highest
+ * It may be a good idea to check only for the one or two highest
* of the version elements to allow the data memory to
* get more or somewhat rearranged contents, for as long
* as the using code can still interpret the older contents.</p>
* common place to store the source version of the data;
* for data from the Unicode character database, this could
* reflect the Unicode version.</p>
+ *
* @stable ICU 2.0
*/
typedef struct {
* logically prepended to the ICU data directory string.</p>
*
* <p>For details about ICU data loading see the User Guide
- * Data Management chapter. (http://icu.sourceforge.net/userguide/icudata.html)</p>
+ * Data Management chapter. (http://icu-project.org/userguide/icudata.html)</p>
*
* @param path Specifies an absolute path and/or a basename for the
* finding of the data in the file system.
U_STABLE void U_EXPORT2
udata_close(UDataMemory *pData);
+#if U_SHOW_CPLUSPLUS_API
+
+U_NAMESPACE_BEGIN
+
+/**
+ * \class LocalUDataMemoryPointer
+ * "Smart pointer" class, closes a UDataMemory via udata_close().
+ * For most methods see the LocalPointerBase base class.
+ *
+ * @see LocalPointerBase
+ * @see LocalPointer
+ * @stable ICU 4.4
+ */
+U_DEFINE_LOCAL_OPEN_POINTER(LocalUDataMemoryPointer, UDataMemory, udata_close);
+
+U_NAMESPACE_END
+
+#endif
+
/**
* Get the pointer to the actual data inside the data memory.
* The data is read-only.
+ *
+ * ICU data must be at least 8-aligned, and should be 16-aligned.
+ *
* @param pData The pointer to data memory object
* @stable ICU 2.0
*/
* allows you to force ICU's system data to come out of a user-specified
* area in memory.
*
+ * ICU data must be at least 8-aligned, and should be 16-aligned.
+ * See http://userguide.icu-project.org/icudata
+ *
* The format of this data is that of the icu common data file, as is
* generated by the pkgdata tool with mode=common or mode=dll.
* You can read in a whole common mode file and pass the address to the start of the
* the data that has been loaded from a dll by the operating system,
* as shown in this code:
*
- * extern const char U_IMPORT U_ICUDATA_ENTRY_POINT [];
+ * extern const char U_IMPORT U_ICUDATA_ENTRY_POINT [];
* // U_ICUDATA_ENTRY_POINT is same as entry point specified to pkgdata tool
* UErrorCode status = U_ZERO_ERROR;
*
* udata_setCommonData(&U_ICUDATA_ENTRY_POINT, &status);
*
- * Warning: ICU must NOT have even attempted to access its data yet
- * when this call is made, or U_USING_DEFAULT_WARNING code will
- * be returned. Be careful of UnicodeStrings in static initialization which
- * may attempt to load a converter (use the UNICODE_STRING(x) macro instead).
- *
- * Also note that it is important that the declaration be as above. The entry point
+ * It is important that the declaration be as above. The entry point
* must not be declared as an extern void*.
*
+ * Starting with ICU 4.4, it is possible to set several data packages,
+ * one per call to this function.
+ * udata_open() will look for data in the multiple data packages in the order
+ * in which they were set.
+ * The position of the linked-in or default-name ICU .data package in the
+ * search list depends on when the first data item is loaded that is not contained
+ * in the already explicitly set packages.
+ * If data was loaded implicitly before the first call to this function
+ * (for example, via opening a converter, constructing a UnicodeString
+ * from default-codepage data, using formatting or collation APIs, etc.),
+ * then the default data will be first in the list.
+ *
* This function has no effect on application (non ICU) data. See udata_setAppData()
* for similar functionality for application data.
*
* @param err outgoing error status <code>U_USING_DEFAULT_WARNING, U_UNSUPPORTED_ERROR</code>
* @stable ICU 2.0
*/
-
U_STABLE void U_EXPORT2
udata_setCommonData(const void *data, UErrorCode *err);
* data and allows you to force the it to come out of a user-specified
* pointer.
*
+ * ICU data must be at least 8-aligned, and should be 16-aligned.
+ * See http://userguide.icu-project.org/icudata
+ *
* The format of this data is that of the icu common data file, like 'icudt26l.dat'
* or the corresponding shared library (DLL) file.
* The application must read in or otherwise construct an image of the data and then
/**
* Possible settings for udata_setFileAccess()
* @see udata_setFileAccess
- * @draft ICU 3.4
+ * @stable ICU 3.4
*/
typedef enum UDataFileAccess {
- /** ICU does not access the file system for data loading. */
- UDATA_NO_FILES,
- /** ICU only loads data from packages, not from single files. */
+ /** ICU looks for data in single files first, then in packages. (default) @stable ICU 3.4 */
+ UDATA_FILES_FIRST,
+ /** An alias for the default access mode. @stable ICU 3.4 */
+ UDATA_DEFAULT_ACCESS = UDATA_FILES_FIRST,
+ /** ICU only loads data from packages, not from single files. @stable ICU 3.4 */
UDATA_ONLY_PACKAGES,
/** ICU loads data from packages first, and only from single files
- if the data cannot be found in a package. */
+ if the data cannot be found in a package. @stable ICU 3.4 */
UDATA_PACKAGES_FIRST,
- /** ICU looks for data in single files first, then in packages. (default) */
- UDATA_FILES_FIRST,
- /** An alias for the default access mode. */
- UDATA_DEFAULT_ACCESS = UDATA_FILES_FIRST,
+ /** ICU does not access the file system for data loading. @stable ICU 3.4 */
+ UDATA_NO_FILES,
+ /** Number of real UDataFileAccess values. @stable ICU 3.4 */
UDATA_FILE_ACCESS_COUNT
} UDataFileAccess;
/**
* This function may be called to control how ICU loads data. It must be called
- * before any ICU data is loaded, including application data loaded with ures/ResourceBundle or
- * udata APIs. It should be called before u_init. This function is not multithread safe.
+ * before any ICU data is loaded, including application data loaded with
+ * ures/ResourceBundle or udata APIs. This function is not multithread safe.
* The results of calling it while other threads are loading data are undefined.
* @param access The type of file access to be used
* @param status Error code.
* @see UDataFileAccess
- * @draft ICU 3.4
+ * @stable ICU 3.4
*/
-U_DRAFT void U_EXPORT2
+U_STABLE void U_EXPORT2
udata_setFileAccess(UDataFileAccess access, UErrorCode *status);
U_CDECL_END
projects / apple / icu.git / blobdiff