Check in the pristine copy of ICU 52.1
The following directories we don't use are removed:
as_is
packaging
source/layout
source/layoutex
Better plural formatting, updated locale data, the segmentation support
for Chinese, Japanese (our code was upstreamed) and Khmer/Lao are among
many improvements. EcmaScript I18N API also need this update to be compliant
to the spec.
Because codereview.chromium.org keeps giving me a 500 error when uploading
the CL, so this initial check-in is done directly with svn.
BUG=132145
TEST=None
git-svn-id: http://src.chromium.org/svn/trunk/deps/third_party/icu52@259715 4ff67af0-8c30-449e-8e8b-ad334ec8d88c
diff --git a/source/common/udata.cpp b/source/common/udata.cpp
new file mode 100644
index 0000000..f82b531
--- /dev/null
+++ b/source/common/udata.cpp
@@ -0,0 +1,1377 @@
+/*
+******************************************************************************
+*
+* Copyright (C) 1999-2013, International Business Machines
+* Corporation and others. All Rights Reserved.
+*
+******************************************************************************
+* file name: udata.cpp
+* encoding: US-ASCII
+* 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 "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
+
+#define LENGTHOF(array) (int32_t)(sizeof(array)/sizeof((array)[0]))
+
+U_NAMESPACE_USE
+
+/*
+ * Forward declarations
+ */
+static UDataMemory *udata_findCachedData(const char *path);
+
+/***********************************************************************
+*
+* 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 };
+
+static UBool gHaveTriedToLoadCommonData = FALSE; /* See extendICUData(). */
+
+static UHashtable *gCommonDataCache = NULL; /* Global hash table of opened ICU data files. */
+static icu::UInitOnce gCommonDataCacheInitOnce = U_INITONCE_INITIALIZER;
+
+static UDataFileAccess gDataFileAccess = UDATA_DEFAULT_ACCESS;
+
+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 < LENGTHOF(gCommonICUDataArray) && gCommonICUDataArray[i] != NULL; ++i) {
+ udata_close(gCommonICUDataArray[i]);
+ gCommonICUDataArray[i] = NULL;
+ }
+ gHaveTriedToLoadCommonData = FALSE;
+
+ return TRUE; /* Everything was cleaned up */
+}
+
+static UBool U_CALLCONV
+findCommonICUDataByName(const char *inBasename)
+{
+ UBool found = FALSE;
+ int32_t i;
+
+ UDataMemory *pData = udata_findCachedData(inBasename);
+ if (pData == NULL)
+ return FALSE;
+
+ for (i = 0; i < 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 < LENGTHOF(gCommonICUDataArray); ++i) {
+ if (gCommonICUDataArray[i] == NULL) {
+ gCommonICUDataArray[i] = newCommonData;
+ ucln_common_registerCleanup(UCLN_COMMON_UDATA, udata_cleanup);
+ 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 == LENGTHOF(gCommonICUDataArray) && warn) {
+ *pErr = U_USING_DEFAULT_WARNING;
+ }
+ if (!didUpdate) {
+ uprv_free(newCommonData);
+ }
+ return didUpdate;
+}
+
+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);
+}
+
+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 udata_initHashTable() {
+ UErrorCode err = U_ZERO_ERROR;
+ U_ASSERT(gCommonDataCache == NULL);
+ gCommonDataCache = uhash_open(uhash_hashChars, uhash_compareChars, NULL, &err);
+ if (U_FAILURE(err)) {
+ // TODO: handle errors better.
+ gCommonDataCache = NULL;
+ }
+ if (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() {
+ umtx_initOnce(gCommonDataCacheInitOnce, &udata_initHashTable);
+ return gCommonDataCache;
+}
+
+
+
+static UDataMemory *udata_findCachedData(const char *path)
+{
+ UHashtable *htable;
+ UDataMemory *retVal = NULL;
+ DataCacheElement *el;
+ const char *baseName;
+
+ baseName = findBasename(path); /* Cache remembers only the base name, not the full path. */
+ htable = udata_getHashTable();
+ 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;
+
+ 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.
+ */
+ htable = udata_getHashTable();
+ 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. *
+ * *
+ *----------------------------------------------------------------------*/
+
+#define U_DATA_PATHITER_BUFSIZ 128 /* Size of local buffer for paths */
+ /* Overflow causes malloc of larger buf */
+
+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)*/
+ const char *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 path 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 leave directories such as /icudt28l
+ * @param item Item to be searched for. Can include full path, such as /a/b/foo.dat
+ * @param suffix 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.
+ */
+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, 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) /* tack on suffix */
+ {
+ 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. *
+ * *
+ *----------------------------------------------------------------------*/
+extern "C" const DataHeader U_DATA_API U_ICUDATA_ENTRY_POINT;
+
+/*
+ * 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 >= LENGTHOF(gCommonICUDataArray)) {
+ return NULL;
+ }
+ if(gCommonICUDataArray[commonDataIndex] == NULL) {
+ 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;
+ }
+ }
+
+ /* 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);
+ }
+ */
+ setCommonICUDataPointer(&U_ICUDATA_ENTRY_POINT, FALSE, pErrorCode);
+ }
+ return gCommonICUDataArray[commonDataIndex];
+ }
+
+
+ /* 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
+ *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);
+ if (dataToReturn != NULL) {
+ 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);
+#ifdef UDATA_DEBUG
+ fprintf(stderr, "%s\n", UDataMemory_isLoaded(&tData)?"LOADED":"not loaded");
+#endif
+ }
+
+#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);
+ }
+#endif
+
+ 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(!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 */
+ }
+
+ gHaveTriedToLoadCommonData = TRUE;
+ }
+
+ didUpdate = findCommonICUDataByName(U_ICUDATA_NAME); /* 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 potentialy 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)))
+ {
+#ifdef UDATA_DEBUG
+ fprintf(stderr, "UDATA: trying individual file %s\n", pathBuffer);
+#endif
+ if(uprv_mapFile(&dataMemory, pathBuffer))
+ {
+ 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 occured. 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;
+ }
+ }
+ }
+ /* 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;
+ }
+ }
+}
+
+/*
+ * 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))) {
+ *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);
+ }
+ tocEntryPathSuffix = tocEntryPath.data()+tocEntrySuffixIndex; /* suffix starts here */
+
+#ifdef UDATA_DEBUG
+ fprintf(stderr, " tocEntryName = %s\n", tocEntryName.data());
+ fprintf(stderr, " tocEntryPath = %s\n", tocEntryName.data());
+#endif
+
+ if(path == NULL) {
+ path = COMMON_DATA_NAME; /* "icudt26e" */
+ }
+
+ /************************ 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();
+
+ /**** 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*/)
+{
+ gDataFileAccess = access;
+}