diff options
Diffstat (limited to 'deps/node/deps/icu-small/source/common/udata.cpp')
-rw-r--r-- | deps/node/deps/icu-small/source/common/udata.cpp | 1453 |
1 files changed, 0 insertions, 1453 deletions
diff --git a/deps/node/deps/icu-small/source/common/udata.cpp b/deps/node/deps/icu-small/source/common/udata.cpp deleted file mode 100644 index 99efbc97..00000000 --- a/deps/node/deps/icu-small/source/common/udata.cpp +++ /dev/null @@ -1,1453 +0,0 @@ -// © 2016 and later: Unicode, Inc. and others. -// License & terms of use: http://www.unicode.org/copyright.html -/* -****************************************************************************** -* -* Copyright (C) 1999-2016, International Business Machines -* Corporation and others. All Rights Reserved. -* -****************************************************************************** -* file name: udata.cpp -* encoding: UTF-8 -* tab size: 8 (not used) -* indentation:4 -* -* created on: 1999oct25 -* created by: Markus W. Scherer -*/ - -#include "unicode/utypes.h" /* U_PLATFORM etc. */ - -#ifdef __GNUC__ -/* if gcc -#define ATTRIBUTE_WEAK __attribute__ ((weak)) -might have to #include some other header -*/ -#endif - -#include "unicode/putil.h" -#include "unicode/udata.h" -#include "unicode/uversion.h" -#include "charstr.h" -#include "cmemory.h" -#include "cstring.h" -#include "mutex.h" -#include "putilimp.h" -#include "uassert.h" -#include "ucln_cmn.h" -#include "ucmndata.h" -#include "udatamem.h" -#include "uhash.h" -#include "umapfile.h" -#include "umutex.h" - -/*********************************************************************** -* -* Notes on the organization of the ICU data implementation -* -* All of the public API is defined in udata.h -* -* The implementation is split into several files... -* -* - udata.c (this file) contains higher level code that knows about -* the search paths for locating data, caching opened data, etc. -* -* - umapfile.c contains the low level platform-specific code for actually loading -* (memory mapping, file reading, whatever) data into memory. -* -* - ucmndata.c deals with the tables of contents of ICU data items within -* an ICU common format data file. The implementation includes -* an abstract interface and support for multiple TOC formats. -* All knowledge of any specific TOC format is encapsulated here. -* -* - udatamem.c has code for managing UDataMemory structs. These are little -* descriptor objects for blocks of memory holding ICU data of -* various types. -*/ - -/* configuration ---------------------------------------------------------- */ - -/* If you are excruciatingly bored turn this on .. */ -/* #define UDATA_DEBUG 1 */ - -#if defined(UDATA_DEBUG) -# include <stdio.h> -#endif - -U_NAMESPACE_USE - -/* - * Forward declarations - */ -static UDataMemory *udata_findCachedData(const char *path, UErrorCode &err); - -/*********************************************************************** -* -* static (Global) data -* -************************************************************************/ - -/* - * Pointers to the common ICU data. - * - * We store multiple pointers to ICU data packages and iterate through them - * when looking for a data item. - * - * It is possible to combine this with dependency inversion: - * One or more data package libraries may export - * functions that each return a pointer to their piece of the ICU data, - * and this file would import them as weak functions, without a - * strong linker dependency from the common library on the data library. - * - * Then we can have applications depend on only that part of ICU's data - * that they really need, reducing the size of binaries that take advantage - * of this. - */ -static UDataMemory *gCommonICUDataArray[10] = { NULL }; // Access protected by icu global mutex. - -static u_atomic_int32_t gHaveTriedToLoadCommonData = ATOMIC_INT32_T_INITIALIZER(0); // See extendICUData(). - -static UHashtable *gCommonDataCache = NULL; /* Global hash table of opened ICU data files. */ -static icu::UInitOnce gCommonDataCacheInitOnce = U_INITONCE_INITIALIZER; - -#if U_PLATFORM_HAS_WINUWP_API == 0 -static UDataFileAccess gDataFileAccess = UDATA_DEFAULT_ACCESS; // Access not synchronized. - // Modifying is documented as thread-unsafe. -#else -static UDataFileAccess gDataFileAccess = UDATA_NO_FILES; // Windows UWP looks in one spot explicitly -#endif - -static UBool U_CALLCONV -udata_cleanup(void) -{ - int32_t i; - - if (gCommonDataCache) { /* Delete the cache of user data mappings. */ - uhash_close(gCommonDataCache); /* Table owns the contents, and will delete them. */ - gCommonDataCache = NULL; /* Cleanup is not thread safe. */ - } - gCommonDataCacheInitOnce.reset(); - - for (i = 0; i < UPRV_LENGTHOF(gCommonICUDataArray) && gCommonICUDataArray[i] != NULL; ++i) { - udata_close(gCommonICUDataArray[i]); - gCommonICUDataArray[i] = NULL; - } - gHaveTriedToLoadCommonData = 0; - - return TRUE; /* Everything was cleaned up */ -} - -static UBool U_CALLCONV -findCommonICUDataByName(const char *inBasename, UErrorCode &err) -{ - UBool found = FALSE; - int32_t i; - - UDataMemory *pData = udata_findCachedData(inBasename, err); - if (U_FAILURE(err) || pData == NULL) - return FALSE; - - { - Mutex lock; - for (i = 0; i < UPRV_LENGTHOF(gCommonICUDataArray); ++i) { - if ((gCommonICUDataArray[i] != NULL) && (gCommonICUDataArray[i]->pHeader == pData->pHeader)) { - /* The data pointer is already in the array. */ - found = TRUE; - break; - } - } - } - return found; -} - - -/* - * setCommonICUData. Set a UDataMemory to be the global ICU Data - */ -static UBool -setCommonICUData(UDataMemory *pData, /* The new common data. Belongs to caller, we copy it. */ - UBool warn, /* If true, set USING_DEFAULT warning if ICUData was */ - /* changed by another thread before we got to it. */ - UErrorCode *pErr) -{ - UDataMemory *newCommonData = UDataMemory_createNewInstance(pErr); - int32_t i; - UBool didUpdate = FALSE; - if (U_FAILURE(*pErr)) { - return FALSE; - } - - /* For the assignment, other threads must cleanly see either the old */ - /* or the new, not some partially initialized new. The old can not be */ - /* deleted - someone may still have a pointer to it lying around in */ - /* their locals. */ - UDatamemory_assign(newCommonData, pData); - umtx_lock(NULL); - for (i = 0; i < UPRV_LENGTHOF(gCommonICUDataArray); ++i) { - if (gCommonICUDataArray[i] == NULL) { - gCommonICUDataArray[i] = newCommonData; - didUpdate = TRUE; - break; - } else if (gCommonICUDataArray[i]->pHeader == pData->pHeader) { - /* The same data pointer is already in the array. */ - break; - } - } - umtx_unlock(NULL); - - if (i == UPRV_LENGTHOF(gCommonICUDataArray) && warn) { - *pErr = U_USING_DEFAULT_WARNING; - } - if (didUpdate) { - ucln_common_registerCleanup(UCLN_COMMON_UDATA, udata_cleanup); - } else { - uprv_free(newCommonData); - } - return didUpdate; -} - -#if U_PLATFORM_HAS_WINUWP_API == 0 - -static UBool -setCommonICUDataPointer(const void *pData, UBool /*warn*/, UErrorCode *pErrorCode) { - UDataMemory tData; - UDataMemory_init(&tData); - UDataMemory_setData(&tData, pData); - udata_checkCommonData(&tData, pErrorCode); - return setCommonICUData(&tData, FALSE, pErrorCode); -} - -#endif - -static const char * -findBasename(const char *path) { - const char *basename=uprv_strrchr(path, U_FILE_SEP_CHAR); - if(basename==NULL) { - return path; - } else { - return basename+1; - } -} - -#ifdef UDATA_DEBUG -static const char * -packageNameFromPath(const char *path) -{ - if((path == NULL) || (*path == 0)) { - return U_ICUDATA_NAME; - } - - path = findBasename(path); - - if((path == NULL) || (*path == 0)) { - return U_ICUDATA_NAME; - } - - return path; -} -#endif - -/*----------------------------------------------------------------------* - * * - * Cache for common data * - * Functions for looking up or adding entries to a cache of * - * data that has been previously opened. Avoids a potentially * - * expensive operation of re-opening the data for subsequent * - * uses. * - * * - * Data remains cached for the duration of the process. * - * * - *----------------------------------------------------------------------*/ - -typedef struct DataCacheElement { - char *name; - UDataMemory *item; -} DataCacheElement; - - - -/* - * Deleter function for DataCacheElements. - * udata cleanup function closes the hash table; hash table in turn calls back to - * here for each entry. - */ -static void U_CALLCONV DataCacheElement_deleter(void *pDCEl) { - DataCacheElement *p = (DataCacheElement *)pDCEl; - udata_close(p->item); /* unmaps storage */ - uprv_free(p->name); /* delete the hash key string. */ - uprv_free(pDCEl); /* delete 'this' */ -} - -static void U_CALLCONV udata_initHashTable(UErrorCode &err) { - U_ASSERT(gCommonDataCache == NULL); - gCommonDataCache = uhash_open(uhash_hashChars, uhash_compareChars, NULL, &err); - if (U_FAILURE(err)) { - return; - } - U_ASSERT(gCommonDataCache != NULL); - uhash_setValueDeleter(gCommonDataCache, DataCacheElement_deleter); - ucln_common_registerCleanup(UCLN_COMMON_UDATA, udata_cleanup); -} - - /* udata_getCacheHashTable() - * Get the hash table used to store the data cache entries. - * Lazy create it if it doesn't yet exist. - */ -static UHashtable *udata_getHashTable(UErrorCode &err) { - umtx_initOnce(gCommonDataCacheInitOnce, &udata_initHashTable, err); - return gCommonDataCache; -} - - - -static UDataMemory *udata_findCachedData(const char *path, UErrorCode &err) -{ - UHashtable *htable; - UDataMemory *retVal = NULL; - DataCacheElement *el; - const char *baseName; - - htable = udata_getHashTable(err); - if (U_FAILURE(err)) { - return NULL; - } - - baseName = findBasename(path); /* Cache remembers only the base name, not the full path. */ - umtx_lock(NULL); - el = (DataCacheElement *)uhash_get(htable, baseName); - umtx_unlock(NULL); - if (el != NULL) { - retVal = el->item; - } -#ifdef UDATA_DEBUG - fprintf(stderr, "Cache: [%s] -> %p\n", baseName, retVal); -#endif - return retVal; -} - - -static UDataMemory *udata_cacheDataItem(const char *path, UDataMemory *item, UErrorCode *pErr) { - DataCacheElement *newElement; - const char *baseName; - int32_t nameLen; - UHashtable *htable; - DataCacheElement *oldValue = NULL; - UErrorCode subErr = U_ZERO_ERROR; - - htable = udata_getHashTable(*pErr); - if (U_FAILURE(*pErr)) { - return NULL; - } - - /* Create a new DataCacheElement - the thingy we store in the hash table - - * and copy the supplied path and UDataMemoryItems into it. - */ - newElement = (DataCacheElement *)uprv_malloc(sizeof(DataCacheElement)); - if (newElement == NULL) { - *pErr = U_MEMORY_ALLOCATION_ERROR; - return NULL; - } - newElement->item = UDataMemory_createNewInstance(pErr); - if (U_FAILURE(*pErr)) { - uprv_free(newElement); - return NULL; - } - UDatamemory_assign(newElement->item, item); - - baseName = findBasename(path); - nameLen = (int32_t)uprv_strlen(baseName); - newElement->name = (char *)uprv_malloc(nameLen+1); - if (newElement->name == NULL) { - *pErr = U_MEMORY_ALLOCATION_ERROR; - uprv_free(newElement->item); - uprv_free(newElement); - return NULL; - } - uprv_strcpy(newElement->name, baseName); - - /* Stick the new DataCacheElement into the hash table. - */ - umtx_lock(NULL); - oldValue = (DataCacheElement *)uhash_get(htable, path); - if (oldValue != NULL) { - subErr = U_USING_DEFAULT_WARNING; - } - else { - uhash_put( - htable, - newElement->name, /* Key */ - newElement, /* Value */ - &subErr); - } - umtx_unlock(NULL); - -#ifdef UDATA_DEBUG - fprintf(stderr, "Cache: [%s] <<< %p : %s. vFunc=%p\n", newElement->name, - newElement->item, u_errorName(subErr), newElement->item->vFuncs); -#endif - - if (subErr == U_USING_DEFAULT_WARNING || U_FAILURE(subErr)) { - *pErr = subErr; /* copy sub err unto fillin ONLY if something happens. */ - uprv_free(newElement->name); - uprv_free(newElement->item); - uprv_free(newElement); - return oldValue ? oldValue->item : NULL; - } - - return newElement->item; -} - -/*----------------------------------------------------------------------*============== - * * - * Path management. Could be shared with other tools/etc if need be * - * later on. * - * * - *----------------------------------------------------------------------*/ - -U_NAMESPACE_BEGIN - -class UDataPathIterator -{ -public: - UDataPathIterator(const char *path, const char *pkg, - const char *item, const char *suffix, UBool doCheckLastFour, - UErrorCode *pErrorCode); - const char *next(UErrorCode *pErrorCode); - -private: - const char *path; /* working path (u_icudata_Dir) */ - const char *nextPath; /* path following this one */ - const char *basename; /* item's basename (icudt22e_mt.res)*/ - - StringPiece suffix; /* item suffix (can be null) */ - - uint32_t basenameLen; /* length of basename */ - - CharString itemPath; /* path passed in with item name */ - CharString pathBuffer; /* output path for this it'ion */ - CharString packageStub; /* example: "/icudt28b". Will ignore that leaf in set paths. */ - - UBool checkLastFour; /* if TRUE then allow paths such as '/foo/myapp.dat' - * to match, checks last 4 chars of suffix with - * last 4 of path, then previous chars. */ -}; - -/** - * @param iter The iterator to be initialized. Its current state does not matter. - * @param inPath The full pathname to be iterated over. If NULL, defaults to U_ICUDATA_NAME - * @param pkg Package which is being searched for, ex "icudt28l". Will ignore leaf directories such as /icudt28l - * @param item Item to be searched for. Can include full path, such as /a/b/foo.dat - * @param inSuffix Optional item suffix, if not-null (ex. ".dat") then 'path' can contain 'item' explicitly. - * Ex: 'stuff.dat' would be found in '/a/foo:/tmp/stuff.dat:/bar/baz' as item #2. - * '/blarg/stuff.dat' would also be found. - * Note: inSuffix may also be the 'item' being searched for as well, (ex: "ibm-5348_P100-1997.cnv"), in which case - * the 'item' parameter is often the same as pkg. (Though sometimes might have a tree part as well, ex: "icudt62l-curr"). - */ -UDataPathIterator::UDataPathIterator(const char *inPath, const char *pkg, - const char *item, const char *inSuffix, UBool doCheckLastFour, - UErrorCode *pErrorCode) -{ -#ifdef UDATA_DEBUG - fprintf(stderr, "SUFFIX1=%s PATH=%s\n", inSuffix, inPath); -#endif - /** Path **/ - if(inPath == NULL) { - path = u_getDataDirectory(); - } else { - path = inPath; - } - - /** Package **/ - if(pkg != NULL) { - packageStub.append(U_FILE_SEP_CHAR, *pErrorCode).append(pkg, *pErrorCode); -#ifdef UDATA_DEBUG - fprintf(stderr, "STUB=%s [%d]\n", packageStub.data(), packageStub.length()); -#endif - } - - /** Item **/ - basename = findBasename(item); - basenameLen = (int32_t)uprv_strlen(basename); - - /** Item path **/ - if(basename == item) { - nextPath = path; - } else { - itemPath.append(item, (int32_t)(basename-item), *pErrorCode); - nextPath = itemPath.data(); - } -#ifdef UDATA_DEBUG - fprintf(stderr, "SUFFIX=%s [%p]\n", inSuffix, inSuffix); -#endif - - /** Suffix **/ - if(inSuffix != NULL) { - suffix = inSuffix; - } else { - suffix = ""; - } - - checkLastFour = doCheckLastFour; - - /* pathBuffer will hold the output path strings returned by this iterator */ - -#ifdef UDATA_DEBUG - fprintf(stderr, "%p: init %s -> [path=%s], [base=%s], [suff=%s], [itempath=%s], [nextpath=%s], [checklast4=%s]\n", - iter, - item, - path, - basename, - suffix, - itemPath.data(), - nextPath, - checkLastFour?"TRUE":"false"); -#endif -} - -/** - * Get the next path on the list. - * - * @param iter The Iter to be used - * @param len If set, pointer to the length of the returned path, for convenience. - * @return Pointer to the next path segment, or NULL if there are no more. - */ -const char *UDataPathIterator::next(UErrorCode *pErrorCode) -{ - if(U_FAILURE(*pErrorCode)) { - return NULL; - } - - const char *currentPath = NULL; - int32_t pathLen = 0; - const char *pathBasename; - - do - { - if( nextPath == NULL ) { - break; - } - currentPath = nextPath; - - if(nextPath == itemPath.data()) { /* we were processing item's path. */ - nextPath = path; /* start with regular path next tm. */ - pathLen = (int32_t)uprv_strlen(currentPath); - } else { - /* fix up next for next time */ - nextPath = uprv_strchr(currentPath, U_PATH_SEP_CHAR); - if(nextPath == NULL) { - /* segment: entire path */ - pathLen = (int32_t)uprv_strlen(currentPath); - } else { - /* segment: until next segment */ - pathLen = (int32_t)(nextPath - currentPath); - /* skip divider */ - nextPath ++; - } - } - - if(pathLen == 0) { - continue; - } - -#ifdef UDATA_DEBUG - fprintf(stderr, "rest of path (IDD) = %s\n", currentPath); - fprintf(stderr, " "); - { - uint32_t qqq; - for(qqq=0;qqq<pathLen;qqq++) - { - fprintf(stderr, " "); - } - - fprintf(stderr, "^\n"); - } -#endif - pathBuffer.clear().append(currentPath, pathLen, *pErrorCode); - - /* check for .dat files */ - pathBasename = findBasename(pathBuffer.data()); - - if(checkLastFour == TRUE && - (pathLen>=4) && - uprv_strncmp(pathBuffer.data() +(pathLen-4), suffix.data(), 4)==0 && /* suffix matches */ - uprv_strncmp(findBasename(pathBuffer.data()), basename, basenameLen)==0 && /* base matches */ - uprv_strlen(pathBasename)==(basenameLen+4)) { /* base+suffix = full len */ - -#ifdef UDATA_DEBUG - fprintf(stderr, "Have %s file on the path: %s\n", suffix, pathBuffer.data()); -#endif - /* do nothing */ - } - else - { /* regular dir path */ - if(pathBuffer[pathLen-1] != U_FILE_SEP_CHAR) { - if((pathLen>=4) && - uprv_strncmp(pathBuffer.data()+(pathLen-4), ".dat", 4) == 0) - { -#ifdef UDATA_DEBUG - fprintf(stderr, "skipping non-directory .dat file %s\n", pathBuffer.data()); -#endif - continue; - } - - /* Check if it is a directory with the same name as our package */ - if(!packageStub.isEmpty() && - (pathLen > packageStub.length()) && - !uprv_strcmp(pathBuffer.data() + pathLen - packageStub.length(), packageStub.data())) { -#ifdef UDATA_DEBUG - fprintf(stderr, "Found stub %s (will add package %s of len %d)\n", packageStub.data(), basename, basenameLen); -#endif - pathBuffer.truncate(pathLen - packageStub.length()); - } - pathBuffer.append(U_FILE_SEP_CHAR, *pErrorCode); - } - - /* + basename */ - pathBuffer.append(packageStub.data()+1, packageStub.length()-1, *pErrorCode); - - if (!suffix.empty()) /* tack on suffix */ - { - if (suffix.length() > 4) { - // If the suffix is actually an item ("ibm-5348_P100-1997.cnv") and not an extension (".res") - // then we need to ensure that the path ends with a separator. - pathBuffer.ensureEndsWithFileSeparator(*pErrorCode); - } - pathBuffer.append(suffix, *pErrorCode); - } - } - -#ifdef UDATA_DEBUG - fprintf(stderr, " --> %s\n", pathBuffer.data()); -#endif - - return pathBuffer.data(); - - } while(path); - - /* fell way off the end */ - return NULL; -} - -U_NAMESPACE_END - -/* ==================================================================================*/ - - -/*----------------------------------------------------------------------* - * * - * Add a static reference to the common data library * - * Unless overridden by an explicit udata_setCommonData, this will be * - * our common data. * - * * - *----------------------------------------------------------------------*/ -#if U_PLATFORM_HAS_WINUWP_API == 0 // Windows UWP Platform does not support dll icu data at this time -extern "C" const DataHeader U_DATA_API U_ICUDATA_ENTRY_POINT; -#endif - -/* - * This would be a good place for weak-linkage declarations of - * partial-data-library access functions where each returns a pointer - * to its data package, if it is linked in. - */ -/* -extern const void *uprv_getICUData_collation(void) ATTRIBUTE_WEAK; -extern const void *uprv_getICUData_conversion(void) ATTRIBUTE_WEAK; -*/ - -/*----------------------------------------------------------------------* - * * - * openCommonData Attempt to open a common format (.dat) file * - * Map it into memory (if it's not there already) * - * and return a UDataMemory object for it. * - * * - * If the requested data is already open and cached * - * just return the cached UDataMem object. * - * * - *----------------------------------------------------------------------*/ -static UDataMemory * -openCommonData(const char *path, /* Path from OpenChoice? */ - int32_t commonDataIndex, /* ICU Data (index >= 0) if path == NULL */ - UErrorCode *pErrorCode) -{ - UDataMemory tData; - const char *pathBuffer; - const char *inBasename; - - if (U_FAILURE(*pErrorCode)) { - return NULL; - } - - UDataMemory_init(&tData); - - /* ??????? TODO revisit this */ - if (commonDataIndex >= 0) { - /* "mini-cache" for common ICU data */ - if(commonDataIndex >= UPRV_LENGTHOF(gCommonICUDataArray)) { - return NULL; - } - { - Mutex lock; - if(gCommonICUDataArray[commonDataIndex] != NULL) { - return gCommonICUDataArray[commonDataIndex]; - } -#if U_PLATFORM_HAS_WINUWP_API == 0 // Windows UWP Platform does not support dll icu data at this time - int32_t i; - for(i = 0; i < commonDataIndex; ++i) { - if(gCommonICUDataArray[i]->pHeader == &U_ICUDATA_ENTRY_POINT) { - /* The linked-in data is already in the list. */ - return NULL; - } - } -#endif - } - - /* Add the linked-in data to the list. */ - /* - * This is where we would check and call weakly linked partial-data-library - * access functions. - */ - /* - if (uprv_getICUData_collation) { - setCommonICUDataPointer(uprv_getICUData_collation(), FALSE, pErrorCode); - } - if (uprv_getICUData_conversion) { - setCommonICUDataPointer(uprv_getICUData_conversion(), FALSE, pErrorCode); - } - */ -#if U_PLATFORM_HAS_WINUWP_API == 0 // Windows UWP Platform does not support dll icu data at this time - setCommonICUDataPointer(&U_ICUDATA_ENTRY_POINT, FALSE, pErrorCode); - { - Mutex lock; - return gCommonICUDataArray[commonDataIndex]; - } -#endif - } - - - /* request is NOT for ICU Data. */ - - /* Find the base name portion of the supplied path. */ - /* inBasename will be left pointing somewhere within the original path string. */ - inBasename = findBasename(path); -#ifdef UDATA_DEBUG - fprintf(stderr, "inBasename = %s\n", inBasename); -#endif - - if(*inBasename==0) { - /* no basename. This will happen if the original path was a directory name, */ - /* like "a/b/c/". (Fallback to separate files will still work.) */ -#ifdef UDATA_DEBUG - fprintf(stderr, "ocd: no basename in %s, bailing.\n", path); -#endif - if (U_SUCCESS(*pErrorCode)) { - *pErrorCode=U_FILE_ACCESS_ERROR; - } - return NULL; - } - - /* Is the requested common data file already open and cached? */ - /* Note that the cache is keyed by the base name only. The rest of the path, */ - /* if any, is not considered. */ - UDataMemory *dataToReturn = udata_findCachedData(inBasename, *pErrorCode); - if (dataToReturn != NULL || U_FAILURE(*pErrorCode)) { - return dataToReturn; - } - - /* Requested item is not in the cache. - * Hunt it down, trying all the path locations - */ - - UDataPathIterator iter(u_getDataDirectory(), inBasename, path, ".dat", TRUE, pErrorCode); - - while ((UDataMemory_isLoaded(&tData)==FALSE) && (pathBuffer = iter.next(pErrorCode)) != NULL) - { -#ifdef UDATA_DEBUG - fprintf(stderr, "ocd: trying path %s - ", pathBuffer); -#endif - uprv_mapFile(&tData, pathBuffer, pErrorCode); -#ifdef UDATA_DEBUG - fprintf(stderr, "%s\n", UDataMemory_isLoaded(&tData)?"LOADED":"not loaded"); -#endif - } - if (U_FAILURE(*pErrorCode)) { - return NULL; - } - -#if defined(OS390_STUBDATA) && defined(OS390BATCH) - if (!UDataMemory_isLoaded(&tData)) { - char ourPathBuffer[1024]; - /* One more chance, for extendCommonData() */ - uprv_strncpy(ourPathBuffer, path, 1019); - ourPathBuffer[1019]=0; - uprv_strcat(ourPathBuffer, ".dat"); - uprv_mapFile(&tData, ourPathBuffer, pErrorCode); - } -#endif - - if (U_FAILURE(*pErrorCode)) { - return NULL; - } - if (!UDataMemory_isLoaded(&tData)) { - /* no common data */ - *pErrorCode=U_FILE_ACCESS_ERROR; - return NULL; - } - - /* we have mapped a file, check its header */ - udata_checkCommonData(&tData, pErrorCode); - - - /* Cache the UDataMemory struct for this .dat file, - * so we won't need to hunt it down and map it again next time - * something is needed from it. */ - return udata_cacheDataItem(inBasename, &tData, pErrorCode); -} - - -/*----------------------------------------------------------------------* - * * - * extendICUData If the full set of ICU data was not loaded at * - * program startup, load it now. This function will * - * be called when the lookup of an ICU data item in * - * the common ICU data fails. * - * * - * return true if new data is loaded, false otherwise.* - * * - *----------------------------------------------------------------------*/ -static UBool extendICUData(UErrorCode *pErr) -{ - UDataMemory *pData; - UDataMemory copyPData; - UBool didUpdate = FALSE; - - /* - * There is a chance for a race condition here. - * Normally, ICU data is loaded from a DLL or via mmap() and - * setCommonICUData() will detect if the same address is set twice. - * If ICU is built with data loading via fread() then the address will - * be different each time the common data is loaded and we may add - * multiple copies of the data. - * In this case, use a mutex to prevent the race. - * Use a specific mutex to avoid nested locks of the global mutex. - */ -#if MAP_IMPLEMENTATION==MAP_STDIO - static UMutex extendICUDataMutex = U_MUTEX_INITIALIZER; - umtx_lock(&extendICUDataMutex); -#endif - if(!umtx_loadAcquire(gHaveTriedToLoadCommonData)) { - /* See if we can explicitly open a .dat file for the ICUData. */ - pData = openCommonData( - U_ICUDATA_NAME, /* "icudt20l" , for example. */ - -1, /* Pretend we're not opening ICUData */ - pErr); - - /* How about if there is no pData, eh... */ - - UDataMemory_init(©PData); - if(pData != NULL) { - UDatamemory_assign(©PData, pData); - copyPData.map = 0; /* The mapping for this data is owned by the hash table */ - copyPData.mapAddr = 0; /* which will unmap it when ICU is shut down. */ - /* CommonICUData is also unmapped when ICU is shut down.*/ - /* To avoid unmapping the data twice, zero out the map */ - /* fields in the UDataMemory that we're assigning */ - /* to CommonICUData. */ - - didUpdate = /* no longer using this result */ - setCommonICUData(©PData,/* The new common data. */ - FALSE, /* No warnings if write didn't happen */ - pErr); /* setCommonICUData honors errors; NOP if error set */ - } - - umtx_storeRelease(gHaveTriedToLoadCommonData, 1); - } - - didUpdate = findCommonICUDataByName(U_ICUDATA_NAME, *pErr); /* Return 'true' when a racing writes out the extended */ - /* data after another thread has failed to see it (in openCommonData), so */ - /* extended data can be examined. */ - /* Also handles a race through here before gHaveTriedToLoadCommonData is set. */ - -#if MAP_IMPLEMENTATION==MAP_STDIO - umtx_unlock(&extendICUDataMutex); -#endif - return didUpdate; /* Return true if ICUData pointer was updated. */ - /* (Could potentially have been done by another thread racing */ - /* us through here, but that's fine, we still return true */ - /* so that current thread will also examine extended data. */ -} - -/*----------------------------------------------------------------------* - * * - * udata_setCommonData * - * * - *----------------------------------------------------------------------*/ -U_CAPI void U_EXPORT2 -udata_setCommonData(const void *data, UErrorCode *pErrorCode) { - UDataMemory dataMemory; - - if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) { - return; - } - - if(data==NULL) { - *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR; - return; - } - - /* set the data pointer and test for validity */ - UDataMemory_init(&dataMemory); - UDataMemory_setData(&dataMemory, data); - udata_checkCommonData(&dataMemory, pErrorCode); - if (U_FAILURE(*pErrorCode)) {return;} - - /* we have good data */ - /* Set it up as the ICU Common Data. */ - setCommonICUData(&dataMemory, TRUE, pErrorCode); -} - -/*--------------------------------------------------------------------------- - * - * udata_setAppData - * - *---------------------------------------------------------------------------- */ -U_CAPI void U_EXPORT2 -udata_setAppData(const char *path, const void *data, UErrorCode *err) -{ - UDataMemory udm; - - if(err==NULL || U_FAILURE(*err)) { - return; - } - if(data==NULL) { - *err=U_ILLEGAL_ARGUMENT_ERROR; - return; - } - - UDataMemory_init(&udm); - UDataMemory_setData(&udm, data); - udata_checkCommonData(&udm, err); - udata_cacheDataItem(path, &udm, err); -} - -/*----------------------------------------------------------------------------* - * * - * checkDataItem Given a freshly located/loaded data item, either * - * an entry in a common file or a separately loaded file, * - * sanity check its header, and see if the data is * - * acceptable to the app. * - * If the data is good, create and return a UDataMemory * - * object that can be returned to the application. * - * Return NULL on any sort of failure. * - * * - *----------------------------------------------------------------------------*/ -static UDataMemory * -checkDataItem -( - const DataHeader *pHeader, /* The data item to be checked. */ - UDataMemoryIsAcceptable *isAcceptable, /* App's call-back function */ - void *context, /* pass-thru param for above. */ - const char *type, /* pass-thru param for above. */ - const char *name, /* pass-thru param for above. */ - UErrorCode *nonFatalErr, /* Error code if this data was not acceptable */ - /* but openChoice should continue with */ - /* trying to get data from fallback path. */ - UErrorCode *fatalErr /* Bad error, caller should return immediately */ - ) -{ - UDataMemory *rDataMem = NULL; /* the new UDataMemory, to be returned. */ - - if (U_FAILURE(*fatalErr)) { - return NULL; - } - - if(pHeader->dataHeader.magic1==0xda && - pHeader->dataHeader.magic2==0x27 && - (isAcceptable==NULL || isAcceptable(context, type, name, &pHeader->info)) - ) { - rDataMem=UDataMemory_createNewInstance(fatalErr); - if (U_FAILURE(*fatalErr)) { - return NULL; - } - rDataMem->pHeader = pHeader; - } else { - /* the data is not acceptable, look further */ - /* If we eventually find something good, this errorcode will be */ - /* cleared out. */ - *nonFatalErr=U_INVALID_FORMAT_ERROR; - } - return rDataMem; -} - -/** - * @return 0 if not loaded, 1 if loaded or err - */ -static UDataMemory *doLoadFromIndividualFiles(const char *pkgName, - const char *dataPath, const char *tocEntryPathSuffix, - /* following arguments are the same as doOpenChoice itself */ - const char *path, const char *type, const char *name, - UDataMemoryIsAcceptable *isAcceptable, void *context, - UErrorCode *subErrorCode, - UErrorCode *pErrorCode) -{ - const char *pathBuffer; - UDataMemory dataMemory; - UDataMemory *pEntryData; - - /* look in ind. files: package\nam.typ ========================= */ - /* init path iterator for individual files */ - UDataPathIterator iter(dataPath, pkgName, path, tocEntryPathSuffix, FALSE, pErrorCode); - - while ((pathBuffer = iter.next(pErrorCode)) != NULL) - { -#ifdef UDATA_DEBUG - fprintf(stderr, "UDATA: trying individual file %s\n", pathBuffer); -#endif - if (uprv_mapFile(&dataMemory, pathBuffer, pErrorCode)) - { - pEntryData = checkDataItem(dataMemory.pHeader, isAcceptable, context, type, name, subErrorCode, pErrorCode); - if (pEntryData != NULL) { - /* Data is good. - * Hand off ownership of the backing memory to the user's UDataMemory. - * and return it. */ - pEntryData->mapAddr = dataMemory.mapAddr; - pEntryData->map = dataMemory.map; - -#ifdef UDATA_DEBUG - fprintf(stderr, "** Mapped file: %s\n", pathBuffer); -#endif - return pEntryData; - } - - /* the data is not acceptable, or some error occurred. Either way, unmap the memory */ - udata_close(&dataMemory); - - /* If we had a nasty error, bail out completely. */ - if (U_FAILURE(*pErrorCode)) { - return NULL; - } - - /* Otherwise remember that we found data but didn't like it for some reason */ - *subErrorCode=U_INVALID_FORMAT_ERROR; - } -#ifdef UDATA_DEBUG - fprintf(stderr, "%s\n", UDataMemory_isLoaded(&dataMemory)?"LOADED":"not loaded"); -#endif - } - return NULL; -} - -/** - * @return 0 if not loaded, 1 if loaded or err - */ -static UDataMemory *doLoadFromCommonData(UBool isICUData, const char * /*pkgName*/, - const char * /*dataPath*/, const char * /*tocEntryPathSuffix*/, const char *tocEntryName, - /* following arguments are the same as doOpenChoice itself */ - const char *path, const char *type, const char *name, - UDataMemoryIsAcceptable *isAcceptable, void *context, - UErrorCode *subErrorCode, - UErrorCode *pErrorCode) -{ - UDataMemory *pEntryData; - const DataHeader *pHeader; - UDataMemory *pCommonData; - int32_t commonDataIndex; - UBool checkedExtendedICUData = FALSE; - /* try to get common data. The loop is for platforms such as the 390 that do - * not initially load the full set of ICU data. If the lookup of an ICU data item - * fails, the full (but slower to load) set is loaded, the and the loop repeats, - * trying the lookup again. Once the full set of ICU data is loaded, the loop wont - * repeat because the full set will be checked the first time through. - * - * The loop also handles the fallback to a .dat file if the application linked - * to the stub data library rather than a real library. - */ - for (commonDataIndex = isICUData ? 0 : -1;;) { - pCommonData=openCommonData(path, commonDataIndex, subErrorCode); /** search for pkg **/ - - if(U_SUCCESS(*subErrorCode) && pCommonData!=NULL) { - int32_t length; - - /* look up the data piece in the common data */ - pHeader=pCommonData->vFuncs->Lookup(pCommonData, tocEntryName, &length, subErrorCode); -#ifdef UDATA_DEBUG - fprintf(stderr, "%s: pHeader=%p - %s\n", tocEntryName, pHeader, u_errorName(*subErrorCode)); -#endif - - if(pHeader!=NULL) { - pEntryData = checkDataItem(pHeader, isAcceptable, context, type, name, subErrorCode, pErrorCode); -#ifdef UDATA_DEBUG - fprintf(stderr, "pEntryData=%p\n", pEntryData); -#endif - if (U_FAILURE(*pErrorCode)) { - return NULL; - } - if (pEntryData != NULL) { - pEntryData->length = length; - return pEntryData; - } - } - } - // If we failed due to being out-of-memory, then stop early and report the error. - if (*subErrorCode == U_MEMORY_ALLOCATION_ERROR) { - *pErrorCode = *subErrorCode; - return NULL; - } - /* Data wasn't found. If we were looking for an ICUData item and there is - * more data available, load it and try again, - * otherwise break out of this loop. */ - if (!isICUData) { - return NULL; - } else if (pCommonData != NULL) { - ++commonDataIndex; /* try the next data package */ - } else if ((!checkedExtendedICUData) && extendICUData(subErrorCode)) { - checkedExtendedICUData = TRUE; - /* try this data package slot again: it changed from NULL to non-NULL */ - } else { - return NULL; - } - } -} - -/* - * Identify the Time Zone resources that are subject to special override data loading. - */ -static UBool isTimeZoneFile(const char *name, const char *type) { - return ((uprv_strcmp(type, "res") == 0) && - (uprv_strcmp(name, "zoneinfo64") == 0 || - uprv_strcmp(name, "timezoneTypes") == 0 || - uprv_strcmp(name, "windowsZones") == 0 || - uprv_strcmp(name, "metaZones") == 0)); -} - -/* - * A note on the ownership of Mapped Memory - * - * For common format files, ownership resides with the UDataMemory object - * that lives in the cache of opened common data. These UDataMemorys are private - * to the udata implementation, and are never seen directly by users. - * - * The UDataMemory objects returned to users will have the address of some desired - * data within the mapped region, but they wont have the mapping info itself, and thus - * won't cause anything to be removed from memory when they are closed. - * - * For individual data files, the UDataMemory returned to the user holds the - * information necessary to unmap the data on close. If the user independently - * opens the same data file twice, two completely independent mappings will be made. - * (There is no cache of opened data items from individual files, only a cache of - * opened Common Data files, that is, files containing a collection of data items.) - * - * For common data passed in from the user via udata_setAppData() or - * udata_setCommonData(), ownership remains with the user. - * - * UDataMemory objects themselves, as opposed to the memory they describe, - * can be anywhere - heap, stack/local or global. - * They have a flag to indicate when they're heap allocated and thus - * must be deleted when closed. - */ - - -/*----------------------------------------------------------------------------* - * * - * main data loading functions * - * * - *----------------------------------------------------------------------------*/ -static UDataMemory * -doOpenChoice(const char *path, const char *type, const char *name, - UDataMemoryIsAcceptable *isAcceptable, void *context, - UErrorCode *pErrorCode) -{ - UDataMemory *retVal = NULL; - - const char *dataPath; - - int32_t tocEntrySuffixIndex; - const char *tocEntryPathSuffix; - UErrorCode subErrorCode=U_ZERO_ERROR; - const char *treeChar; - - UBool isICUData = FALSE; - - - /* Is this path ICU data? */ - if(path == NULL || - !strcmp(path, U_ICUDATA_ALIAS) || /* "ICUDATA" */ - !uprv_strncmp(path, U_ICUDATA_NAME U_TREE_SEPARATOR_STRING, /* "icudt26e-" */ - uprv_strlen(U_ICUDATA_NAME U_TREE_SEPARATOR_STRING)) || - !uprv_strncmp(path, U_ICUDATA_ALIAS U_TREE_SEPARATOR_STRING, /* "ICUDATA-" */ - uprv_strlen(U_ICUDATA_ALIAS U_TREE_SEPARATOR_STRING))) { - isICUData = TRUE; - } - -#if (U_FILE_SEP_CHAR != U_FILE_ALT_SEP_CHAR) /* Windows: try "foo\bar" and "foo/bar" */ - /* remap from alternate path char to the main one */ - CharString altSepPath; - if(path) { - if(uprv_strchr(path,U_FILE_ALT_SEP_CHAR) != NULL) { - altSepPath.append(path, *pErrorCode); - char *p; - while ((p = uprv_strchr(altSepPath.data(), U_FILE_ALT_SEP_CHAR)) != NULL) { - *p = U_FILE_SEP_CHAR; - } -#if defined (UDATA_DEBUG) - fprintf(stderr, "Changed path from [%s] to [%s]\n", path, altSepPath.s); -#endif - path = altSepPath.data(); - } - } -#endif - - CharString tocEntryName; /* entry name in tree format. ex: 'icudt28b/coll/ar.res' */ - CharString tocEntryPath; /* entry name in path format. ex: 'icudt28b\\coll\\ar.res' */ - - CharString pkgName; - CharString treeName; - - /* ======= Set up strings */ - if(path==NULL) { - pkgName.append(U_ICUDATA_NAME, *pErrorCode); - } else { - const char *pkg; - const char *first; - pkg = uprv_strrchr(path, U_FILE_SEP_CHAR); - first = uprv_strchr(path, U_FILE_SEP_CHAR); - if(uprv_pathIsAbsolute(path) || (pkg != first)) { /* more than one slash in the path- not a tree name */ - /* see if this is an /absolute/path/to/package path */ - if(pkg) { - pkgName.append(pkg+1, *pErrorCode); - } else { - pkgName.append(path, *pErrorCode); - } - } else { - treeChar = uprv_strchr(path, U_TREE_SEPARATOR); - if(treeChar) { - treeName.append(treeChar+1, *pErrorCode); /* following '-' */ - if(isICUData) { - pkgName.append(U_ICUDATA_NAME, *pErrorCode); - } else { - pkgName.append(path, (int32_t)(treeChar-path), *pErrorCode); - if (first == NULL) { - /* - This user data has no path, but there is a tree name. - Look up the correct path from the data cache later. - */ - path = pkgName.data(); - } - } - } else { - if(isICUData) { - pkgName.append(U_ICUDATA_NAME, *pErrorCode); - } else { - pkgName.append(path, *pErrorCode); - } - } - } - } - -#ifdef UDATA_DEBUG - fprintf(stderr, " P=%s T=%s\n", pkgName.data(), treeName.data()); -#endif - - /* setting up the entry name and file name - * Make up a full name by appending the type to the supplied - * name, assuming that a type was supplied. - */ - - /* prepend the package */ - tocEntryName.append(pkgName, *pErrorCode); - tocEntryPath.append(pkgName, *pErrorCode); - tocEntrySuffixIndex = tocEntryName.length(); - - if(!treeName.isEmpty()) { - tocEntryName.append(U_TREE_ENTRY_SEP_CHAR, *pErrorCode).append(treeName, *pErrorCode); - tocEntryPath.append(U_FILE_SEP_CHAR, *pErrorCode).append(treeName, *pErrorCode); - } - - tocEntryName.append(U_TREE_ENTRY_SEP_CHAR, *pErrorCode).append(name, *pErrorCode); - tocEntryPath.append(U_FILE_SEP_CHAR, *pErrorCode).append(name, *pErrorCode); - if(type!=NULL && *type!=0) { - tocEntryName.append(".", *pErrorCode).append(type, *pErrorCode); - tocEntryPath.append(".", *pErrorCode).append(type, *pErrorCode); - } - // The +1 is for the U_FILE_SEP_CHAR that is always appended above. - tocEntryPathSuffix = tocEntryPath.data() + tocEntrySuffixIndex + 1; /* suffix starts here */ - -#ifdef UDATA_DEBUG - fprintf(stderr, " tocEntryName = %s\n", tocEntryName.data()); - fprintf(stderr, " tocEntryPath = %s\n", tocEntryName.data()); -#endif - -#if U_PLATFORM_HAS_WINUWP_API == 0 // Windows UWP Platform does not support dll icu data at this time - if(path == NULL) { - path = COMMON_DATA_NAME; /* "icudt26e" */ - } -#else - // Windows UWP expects only a single data file. - path = COMMON_DATA_NAME; /* "icudt26e" */ -#endif - - /************************ Begin loop looking for ind. files ***************/ -#ifdef UDATA_DEBUG - fprintf(stderr, "IND: inBasename = %s, pkg=%s\n", "(n/a)", packageNameFromPath(path)); -#endif - - /* End of dealing with a null basename */ - dataPath = u_getDataDirectory(); - - /**** Time zone individual files override */ - if (isICUData && isTimeZoneFile(name, type)) { - const char *tzFilesDir = u_getTimeZoneFilesDirectory(pErrorCode); - if (tzFilesDir[0] != 0) { -#ifdef UDATA_DEBUG - fprintf(stderr, "Trying Time Zone Files directory = %s\n", tzFilesDir); -#endif - retVal = doLoadFromIndividualFiles(/* pkgName.data() */ "", tzFilesDir, tocEntryPathSuffix, - /* path */ "", type, name, isAcceptable, context, &subErrorCode, pErrorCode); - if((retVal != NULL) || U_FAILURE(*pErrorCode)) { - return retVal; - } - } - } - - /**** COMMON PACKAGE - only if packages are first. */ - if(gDataFileAccess == UDATA_PACKAGES_FIRST) { -#ifdef UDATA_DEBUG - fprintf(stderr, "Trying packages (UDATA_PACKAGES_FIRST)\n"); -#endif - /* #2 */ - retVal = doLoadFromCommonData(isICUData, - pkgName.data(), dataPath, tocEntryPathSuffix, tocEntryName.data(), - path, type, name, isAcceptable, context, &subErrorCode, pErrorCode); - if((retVal != NULL) || U_FAILURE(*pErrorCode)) { - return retVal; - } - } - - /**** INDIVIDUAL FILES */ - if((gDataFileAccess==UDATA_PACKAGES_FIRST) || - (gDataFileAccess==UDATA_FILES_FIRST)) { -#ifdef UDATA_DEBUG - fprintf(stderr, "Trying individual files\n"); -#endif - /* Check to make sure that there is a dataPath to iterate over */ - if ((dataPath && *dataPath) || !isICUData) { - retVal = doLoadFromIndividualFiles(pkgName.data(), dataPath, tocEntryPathSuffix, - path, type, name, isAcceptable, context, &subErrorCode, pErrorCode); - if((retVal != NULL) || U_FAILURE(*pErrorCode)) { - return retVal; - } - } - } - - /**** COMMON PACKAGE */ - if((gDataFileAccess==UDATA_ONLY_PACKAGES) || - (gDataFileAccess==UDATA_FILES_FIRST)) { -#ifdef UDATA_DEBUG - fprintf(stderr, "Trying packages (UDATA_ONLY_PACKAGES || UDATA_FILES_FIRST)\n"); -#endif - retVal = doLoadFromCommonData(isICUData, - pkgName.data(), dataPath, tocEntryPathSuffix, tocEntryName.data(), - path, type, name, isAcceptable, context, &subErrorCode, pErrorCode); - if((retVal != NULL) || U_FAILURE(*pErrorCode)) { - return retVal; - } - } - - /* Load from DLL. If we haven't attempted package load, we also haven't had any chance to - try a DLL (static or setCommonData/etc) load. - If we ever have a "UDATA_ONLY_FILES", add it to the or list here. */ - if(gDataFileAccess==UDATA_NO_FILES) { -#ifdef UDATA_DEBUG - fprintf(stderr, "Trying common data (UDATA_NO_FILES)\n"); -#endif - retVal = doLoadFromCommonData(isICUData, - pkgName.data(), "", tocEntryPathSuffix, tocEntryName.data(), - path, type, name, isAcceptable, context, &subErrorCode, pErrorCode); - if((retVal != NULL) || U_FAILURE(*pErrorCode)) { - return retVal; - } - } - - /* data not found */ - if(U_SUCCESS(*pErrorCode)) { - if(U_SUCCESS(subErrorCode)) { - /* file not found */ - *pErrorCode=U_FILE_ACCESS_ERROR; - } else { - /* entry point not found or rejected */ - *pErrorCode=subErrorCode; - } - } - return retVal; -} - - - -/* API ---------------------------------------------------------------------- */ - -U_CAPI UDataMemory * U_EXPORT2 -udata_open(const char *path, const char *type, const char *name, - UErrorCode *pErrorCode) { -#ifdef UDATA_DEBUG - fprintf(stderr, "udata_open(): Opening: %s : %s . %s\n", (path?path:"NULL"), name, type); - fflush(stderr); -#endif - - if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) { - return NULL; - } else if(name==NULL || *name==0) { - *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR; - return NULL; - } else { - return doOpenChoice(path, type, name, NULL, NULL, pErrorCode); - } -} - - - -U_CAPI UDataMemory * U_EXPORT2 -udata_openChoice(const char *path, const char *type, const char *name, - UDataMemoryIsAcceptable *isAcceptable, void *context, - UErrorCode *pErrorCode) { -#ifdef UDATA_DEBUG - fprintf(stderr, "udata_openChoice(): Opening: %s : %s . %s\n", (path?path:"NULL"), name, type); -#endif - - if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) { - return NULL; - } else if(name==NULL || *name==0 || isAcceptable==NULL) { - *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR; - return NULL; - } else { - return doOpenChoice(path, type, name, isAcceptable, context, pErrorCode); - } -} - - - -U_CAPI void U_EXPORT2 -udata_getInfo(UDataMemory *pData, UDataInfo *pInfo) { - if(pInfo!=NULL) { - if(pData!=NULL && pData->pHeader!=NULL) { - const UDataInfo *info=&pData->pHeader->info; - uint16_t dataInfoSize=udata_getInfoSize(info); - if(pInfo->size>dataInfoSize) { - pInfo->size=dataInfoSize; - } - uprv_memcpy((uint16_t *)pInfo+1, (const uint16_t *)info+1, pInfo->size-2); - if(info->isBigEndian!=U_IS_BIG_ENDIAN) { - /* opposite endianness */ - uint16_t x=info->reservedWord; - pInfo->reservedWord=(uint16_t)((x<<8)|(x>>8)); - } - } else { - pInfo->size=0; - } - } -} - - -U_CAPI void U_EXPORT2 udata_setFileAccess(UDataFileAccess access, UErrorCode * /*status*/) -{ - // Note: this function is documented as not thread safe. - gDataFileAccess = access; -} |