+++ /dev/null
-/*
-******************************************************************************
-*
-* Copyright (C) 1999-2008, International Business Machines
-* Corporation and others. All Rights Reserved.
-*
-******************************************************************************
-* file name: udata.c
-* encoding: US-ASCII
-* tab size: 8 (not used)
-* indentation:4
-*
-* created on: 1999oct25
-* created by: Markus W. Scherer
-*/
-
-#include "unicode/utypes.h"
-#include "unicode/putil.h"
-#include "umutex.h"
-#include "cmemory.h"
-#include "cstring.h"
-#include "unicode/udata.h"
-#include "unicode/uversion.h"
-#include "uhash.h"
-#include "ucln_cmn.h"
-#include "putilimp.h"
-
-#include "udatamem.h"
-#include "umapfile.h"
-#include "ucmndata.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
-
-
-/***********************************************************************
-*
-* static (Global) data
-*
-************************************************************************/
-static UDataMemory *gCommonICUData = NULL; /* Pointer to the common ICU data. */
- /* May be updated once, if we started with */
- /* a stub or subset library. */
-
-static UDataMemory *gStubICUData = NULL; /* If gCommonICUData does get updated, remember */
- /* the original one so that it can be cleaned */
- /* up when ICU is shut down. */
-
-static UHashtable *gCommonDataCache = NULL; /* Global hash table of opened ICU data files. */
-
-static UDataFileAccess gDataFileAccess = UDATA_DEFAULT_ACCESS;
-
-static UBool U_CALLCONV
-udata_cleanup(void)
-{
- 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. */
- }
-
- if (gCommonICUData != NULL) {
- udata_close(gCommonICUData); /* Clean up common ICU Data */
- gCommonICUData = NULL;
- }
-
- if (gStubICUData != NULL) {
- udata_close(gStubICUData); /* Clean up the stub ICU Data */
- gStubICUData = NULL;
- }
-
-
- return TRUE; /* Everything was cleaned up */
-}
-
-
-
-
-/*
- * setCommonICUData. Set a UDataMemory to be the global ICU Data
- */
-static void
-setCommonICUData(UDataMemory *pData, /* The new common data. Belongs to caller, we copy it. */
- UDataMemory *oldData, /* Old ICUData ptr. Overwrite of this value is ok, */
- /* of any others is not. */
- 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);
- if (U_FAILURE(*pErr)) {
- return;
- }
-
- /* 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);
- if (gCommonICUData==oldData) {
- gStubICUData = gCommonICUData; /* remember the old Common Data, so it can be cleaned up. */
- gCommonICUData = newCommonData;
- ucln_common_registerCleanup(UCLN_COMMON_UDATA, udata_cleanup);
- }
- else {
- if (warn==TRUE) {
- *pErr = U_USING_DEFAULT_WARNING;
- }
- uprv_free(newCommonData);
- }
- umtx_unlock(NULL);
-}
-
-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' */
-}
-
- /* 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 = U_ZERO_ERROR;
- UBool cacheIsInitialized;
- UHashtable *tHT = NULL;
-
- UMTX_CHECK(NULL, (gCommonDataCache != NULL), cacheIsInitialized);
-
- if (cacheIsInitialized) {
- return gCommonDataCache;
- }
-
- tHT = uhash_open(uhash_hashChars, uhash_compareChars, NULL, &err);
- /* Check for null pointer. */
- if (tHT == NULL) {
- return NULL; /* TODO: Handle this error better. */
- }
- uhash_setValueDeleter(tHT, DataCacheElement_deleter);
-
- umtx_lock(NULL);
- if (gCommonDataCache == NULL) {
- gCommonDataCache = tHT;
- tHT = NULL;
- ucln_common_registerCleanup(UCLN_COMMON_UDATA, udata_cleanup);
- }
- umtx_unlock(NULL);
- if (tHT != NULL) {
- uhash_close(tHT);
- }
-
- if (U_FAILURE(err)) {
- return NULL; /* TODO: handle this error better. */
- }
- 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;
- UDataMemory *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 = 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 = 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 = 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;
- }
-
- return newElement->item;
-}
-
-
-
-/*-------------------------------------------------------------------------------
- *
- * TinyString - a small set of really simple string functions, for
- * the purpose of consolidating buffer overflow code in one place
- *
- * Use wherever you would otherwise declare a fixed sized char[xx] buffer.
- * Do non-growing ops by accessing fields of struct directly
- * Grow using the append function to automatically extend buffer
- * as needed.
- *
- *-------------------------------------------------------------------------------*/
-typedef struct TinyString {
- char *s;
- int32_t length;
- char fStaticBuf[100];
- int32_t fCapacity;
-} TinyString;
-
-static void TinyString_init(TinyString *This) {
- This->s = This->fStaticBuf;
- *This->s = 0;
- This->length = 0;
- This->fCapacity = sizeof(This->fStaticBuf)-1;
-}
-
-static void TinyString_append(TinyString *This, const char *what) {
- int32_t newLen;
- newLen = This->length + (int32_t)uprv_strlen(what);
- if (newLen >= This->fCapacity) {
- int32_t newCapacity = newLen * 2;
- char *newBuf = (char *)uprv_malloc(newCapacity+1);
- if (newBuf != NULL) {
- uprv_strcpy(newBuf, This->s);
- if (This->s != This->fStaticBuf) {
- uprv_free(This->s);
- }
- This->s = newBuf;
- This->fCapacity = newCapacity;
- }
- }
- if (newLen < This->fCapacity) {
- uprv_strcat(This->s+This->length, what);
- This->length = newLen;
- }
-}
-
-static void TinyString_appendn(TinyString *This, const char *what, int32_t n) {
- int32_t newLen;
- newLen = This->length + n;
- if (newLen >= This->fCapacity) {
- int32_t newCapacity = newLen * 2;
- char *newBuf = (char *)uprv_malloc(newCapacity+1);
- if (newBuf != NULL) {
- uprv_strcpy(newBuf, This->s);
- if (This->s != This->fStaticBuf) {
- uprv_free(This->s);
- }
- This->s = newBuf;
- This->fCapacity = newCapacity;
- }
- }
- if (newLen < This->fCapacity) {
- uprv_strncat(This->s+This->length, what, n);
- This->length = newLen;
- }
-}
-
-static void TinyString_dt(TinyString *This) {
- if (This->s != This->fStaticBuf) {
- uprv_free(This->s);
- }
- TinyString_init(This);
-}
-
-
-
-
-/*----------------------------------------------------------------------*==============
- * *
- * 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 */
-
-typedef struct
-{
- 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 */
-
- char *itemPath; /* path passed in with item name */
- char itemPathBuf[U_DATA_PATHITER_BUFSIZ];
-
- char *pathBuffer; /* output path for this it'ion */
- char pathBufferA[U_DATA_PATHITER_BUFSIZ];
-
- char *packageStub; /* example: "/icudt28b". Will ignore that leaf in set paths. */
- char packageStubBuf[U_DATA_PATHITER_BUFSIZ];
- uint32_t packageStubLen;
-
- 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. */
-
-} UDataPathIterator;
-
-/**
- * Initialize (or re-initialize) a user-supplied UDataPathIterator
- * Note: UDataPathIterator does not allocate storage, so it doesn't need to be closed.
- *
- * @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.
- */
-static void udata_pathiter_init(UDataPathIterator *iter, const char *path, const char *pkg,
- const char *item, const char *suffix, UBool doCheckLastFour)
-{
-#ifdef UDATA_DEBUG
- fprintf(stderr, "SUFFIX1=%s PATH=%s\n", suffix, path);
-#endif
- /** Path **/
- if(path == NULL) {
- iter->path = u_getDataDirectory();
- } else {
- iter->path = path;
- }
-
- /** Package **/
- if(pkg == NULL) {
- iter->packageStubLen = 0;
- iter->packageStub=iter->packageStubBuf;
- iter->packageStub[0] = 0;
- } else {
- if(uprv_strlen(pkg) + 2 > U_DATA_PATHITER_BUFSIZ) {
- iter->packageStub = uprv_malloc(uprv_strlen(pkg)+2);
- /* Check for null pointer. */
- if (iter->packageStub == NULL) {
- return;
- }
- } else {
- iter->packageStub = iter->packageStubBuf;
- }
- iter->packageStub[0] = U_FILE_SEP_CHAR;
- uprv_strcpy(iter->packageStub+1, pkg);
- iter->packageStubLen = (int32_t)uprv_strlen(iter->packageStub);
-
-#ifdef UDATA_DEBUG
- fprintf(stderr, "STUB=%s [%d]\n", iter->packageStub, iter->packageStubLen);
-#endif
- }
-
- /** Item **/
- iter->basename = findBasename(item);
- iter->basenameLen = (int32_t)uprv_strlen(iter->basename);
-
- /** Item path **/
- iter->itemPath = iter->itemPathBuf;
- if(iter->basename == item) {
- iter->itemPath[0] = 0;
- iter->nextPath = iter->path;
- } else {
- int32_t itemPathLen = (int32_t)(iter->basename-item);
- if (itemPathLen >= U_DATA_PATHITER_BUFSIZ) {
- char *t = (char *)uprv_malloc(itemPathLen+1);
- if (t != NULL) {
- iter->itemPath = t;
- } else {
- /* Malloc failed. Ignore the itemPath. */
- itemPathLen = 0;
- }
- }
- uprv_strncpy(iter->itemPath, item, itemPathLen);
- iter->itemPath[itemPathLen]=0;
- iter->nextPath = iter->itemPath;
- }
-#ifdef UDATA_DEBUG
- fprintf(stderr, "SUFFIX=%s [%p]\n", suffix, suffix);
-#endif
-
- /** Suffix **/
- if(suffix != NULL) {
- iter->suffix = suffix;
- } else {
- iter->suffix = "";
- }
-
- iter->checkLastFour = doCheckLastFour;
-
- /* pathBuffer will hold the output path strings returned by the this iterator
- * Get an upper bound of possible string size, and make sure that the buffer
- * is big enough (sum of length of each piece, 2 extra delimiters, + trailing NULL) */
- {
- int32_t maxPathLen = (int32_t)(uprv_strlen(iter->path) + uprv_strlen(item) + uprv_strlen(iter->suffix) + iter->packageStubLen + 3);
- iter->pathBuffer = iter->pathBufferA;
- if (maxPathLen >= U_DATA_PATHITER_BUFSIZ) {
- iter->pathBuffer = (char *)uprv_malloc(maxPathLen);
- if (iter->pathBuffer == NULL) {
- iter->pathBuffer = iter->pathBufferA;
- iter->path = "";
- }
- }
- }
-
-#ifdef UDATA_DEBUG
- fprintf(stderr, "%p: init %s -> [path=%s], [base=%s], [suff=%s], [itempath=%s], [nextpath=%s], [checklast4=%s]\n",
- iter,
- item,
- iter->path,
- iter->basename,
- iter->suffix,
- iter->itemPath,
- iter->nextPath,
- iter->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.
- */
-static const char *udata_pathiter_next(UDataPathIterator *iter)
-{
- const char *path = NULL;
- uint32_t pathLen = 0;
- const char *pathBasename;
-
- do
- {
- if( iter->nextPath == NULL ) {
- break;
- }
-
- path = iter->nextPath;
-
- if(iter->nextPath == iter->itemPath) { /* we were processing item's path. */
- iter->nextPath = iter->path; /* start with regular path next tm. */
- pathLen = (int32_t)uprv_strlen(path);
- } else {
- /* fix up next for next time */
- iter->nextPath = uprv_strchr(path, U_PATH_SEP_CHAR);
- if(iter->nextPath == NULL) {
- /* segment: entire path */
- pathLen = (int32_t)uprv_strlen(path);
- } else {
- /* segment: until next segment */
- pathLen = (int32_t)(iter->nextPath - path);
- if(*iter->nextPath) { /* skip divider */
- iter->nextPath ++;
- }
- }
- }
-
- if(pathLen == 0) {
- continue;
- }
-
-#ifdef UDATA_DEBUG
- fprintf(stderr, "rest of path (IDD) = %s\n", path);
- fprintf(stderr, " ");
- {
- uint32_t qqq;
- for(qqq=0;qqq<pathLen;qqq++)
- {
- fprintf(stderr, " ");
- }
-
- fprintf(stderr, "^\n");
- }
-#endif
- uprv_strncpy(iter->pathBuffer, path, pathLen);
- iter->pathBuffer[pathLen] = 0;
-
- /* check for .dat files */
- pathBasename = findBasename(iter->pathBuffer);
-
- if(iter->checkLastFour == TRUE &&
- (pathLen>=4) &&
- uprv_strncmp(iter->pathBuffer +(pathLen-4),iter->suffix,4)==0 && /* suffix matches */
- uprv_strncmp(findBasename(iter->pathBuffer),iter->basename,iter->basenameLen)==0 && /* base matches */
- uprv_strlen(pathBasename)==(iter->basenameLen+4)) { /* base+suffix = full len */
-
-#ifdef UDATA_DEBUG
- fprintf(stderr, "Have %s file on the path: %s\n", iter->suffix, iter->pathBuffer);
-#endif
- /* do nothing */
- }
- else
- { /* regular dir path */
- if(iter->pathBuffer[pathLen-1] != U_FILE_SEP_CHAR) {
- if((pathLen>=4) &&
- uprv_strncmp(iter->pathBuffer+(pathLen-4), ".dat", 4) == 0)
- {
-#ifdef UDATA_DEBUG
- fprintf(stderr, "skipping non-directory .dat file %s\n", iter->pathBuffer);
-#endif
- continue;
- }
-
- /* Check if it is a directory with the same name as our package */
- if(iter->packageStubLen &&
- (pathLen > iter->packageStubLen) &&
- !uprv_strcmp(iter->pathBuffer + pathLen - iter->packageStubLen, iter->packageStub)) {
-#ifdef UDATA_DEBUG
- fprintf(stderr, "Found stub %s ( will add package %s of len %d)\n", iter->packageStub, iter->basename, iter->basenameLen);
-#endif
- pathLen -= iter->packageStubLen;
- }
-
- iter->pathBuffer[pathLen++] = U_FILE_SEP_CHAR;
- }
-
- uprv_strncpy(iter->pathBuffer + pathLen, /* + basename */
- iter->packageStub+1,
- iter->packageStubLen-1);
-
- pathLen += iter->packageStubLen-1;
-
- if(*iter->suffix) /* tack on suffix */
- {
- uprv_strcpy(iter->pathBuffer + pathLen,
- iter->suffix);
- pathLen += (int32_t)uprv_strlen(iter->suffix);
- }
-
- }
-
-#ifdef UDATA_DEBUG
- fprintf(stderr, " --> %s\n", iter->pathBuffer);
-#endif
-
- return iter->pathBuffer;
-
- } while(iter->path);
-
- /* fell way off the end */
- return NULL;
-}
-
-
-/*
- * Path Iterator Destructor. Clean up any allocated storage
- */
-static void udata_pathiter_dt(UDataPathIterator *iter) {
- if (iter->itemPath != iter->itemPathBuf) {
- uprv_free(iter->itemPath);
- iter->itemPath = NULL;
- }
- if (iter->pathBuffer != iter->pathBufferA) {
- uprv_free(iter->pathBuffer);
- iter->pathBuffer = NULL;
- }
- if (iter->packageStub != iter->packageStubBuf) {
- uprv_free(iter->packageStub);
- iter->packageStub = NULL;
- }
-}
-
-/* ==================================================================================*/
-
-
-/*----------------------------------------------------------------------*
- * *
- * Add a static reference to the common data library *
- * Unless overridden by an explicit udata_setCommonData, this will be *
- * our common data. *
- * *
- *----------------------------------------------------------------------*/
-extern const DataHeader U_DATA_API U_ICUDATA_ENTRY_POINT;
-
-
-/*----------------------------------------------------------------------*
- * *
- * 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? */
- UBool isICUData, /* ICU Data true if path == NULL */
- UErrorCode *pErrorCode)
-{
- UDataMemory tData;
- UDataPathIterator iter;
- const char *pathBuffer;
- const char *inBasename;
-
- if (U_FAILURE(*pErrorCode)) {
- return NULL;
- }
-
- UDataMemory_init(&tData);
-
- /* ??????? TODO revisit this */
- if (isICUData) {
- /* "mini-cache" for common ICU data */
- if(gCommonICUData != NULL) {
- return gCommonICUData;
- }
-
- tData.pHeader = &U_ICUDATA_ENTRY_POINT;
- udata_checkCommonData(&tData, pErrorCode);
- setCommonICUData(&tData, NULL, FALSE, pErrorCode);
- return gCommonICUData;
- }
-
-
- /* 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
- */
-
- udata_pathiter_init(&iter, u_getDataDirectory(), inBasename, path, ".dat", TRUE);
-
- while((UDataMemory_isLoaded(&tData)==FALSE) &&
- (pathBuffer = udata_pathiter_next(&iter)) != 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
- }
- udata_pathiter_dt(&iter); /* Note: this call may invalidate "pathBuffer" */
-
-#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);
-}
-
-
-#ifdef OS390
-# define MAX_STUB_ENTRIES 8
-#else
-# define MAX_STUB_ENTRIES 0
-#endif
-
-
-/*----------------------------------------------------------------------*
- * *
- * 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. *
- * *
- * The parameter is the UDataMemory in which the *
- * search for a requested item failed. *
- * *
- * return true if new data is loaded, false otherwise.*
- * *
- *----------------------------------------------------------------------*/
-static UBool extendICUData(UDataMemory *failedData, UErrorCode *pErr)
-{
- /* If the data library that we are running with turns out to be the
- * stub library (or, on the 390, the subset library), we will try to
- * load a .dat file instead. The stub library has no entries in its
- * TOC, which is how we identify it here.
- */
- UDataMemory *pData;
- UDataMemory copyPData;
-
- if (failedData->vFuncs->NumEntries(failedData) > MAX_STUB_ENTRIES) {
- /* Not the stub. We can't extend. */
- return FALSE;
- }
-
- /* See if we can explicitly open a .dat file for the ICUData. */
- pData = openCommonData(
- U_ICUDATA_NAME, /* "icudt20l" , for example. */
- FALSE, /* 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. */
-
- setCommonICUData(©PData, /* The new common data. */
- failedData, /* Old ICUData ptr. Overwrite of this value is ok, */
- FALSE, /* No warnings if write didn't happen */
- pErr); /* setCommonICUData honors errors; NOP if error set */
- }
-
-
- return gCommonICUData != failedData; /* 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;
- }
-
- /* do we already have common ICU data set? */
- if(gCommonICUData != NULL) {
- *pErrorCode=U_USING_DEFAULT_WARNING;
- 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, NULL, 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);
- udm.pHeader = 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)
-{
- UDataMemory *retVal = NULL;
- const char *pathBuffer;
- UDataMemory dataMemory;
- UDataMemory *pEntryData;
-
- UDataPathIterator iter;
- /* look in ind. files: package\nam.typ ========================= */
- /* init path iterator for individual files */
- udata_pathiter_init(&iter, dataPath, pkgName, path, tocEntryPathSuffix, FALSE);
-
- while((pathBuffer = udata_pathiter_next(&iter)))
- {
-#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
- retVal = pEntryData;
- goto commonReturn;
- }
-
- /* 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)) {
- retVal = NULL;
- goto commonReturn;
- }
-
- /* 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
- }
-commonReturn:
- udata_pathiter_dt(&iter);
- return retVal;
-}
-
-/**
- * @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 *retVal = NULL;
- UDataMemory *pEntryData;
- const DataHeader *pHeader;
- UDataMemory *pCommonData;
- /* 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 (;;) {
- pCommonData=openCommonData(path, isICUData, subErrorCode); /** search for pkg **/
-
- if(U_SUCCESS(*subErrorCode)) {
- 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)) {
- retVal = NULL;
- goto commonReturn;
- }
- if (pEntryData != NULL) {
- pEntryData->length = length;
- retVal = pEntryData;
- goto commonReturn;
- }
- }
- }
- /* 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 && pCommonData && extendICUData(pCommonData, subErrorCode))) {
- break;
- }
- }
-
-commonReturn:
- return retVal;
-}
-
-/*
- * 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;
-
- TinyString tocEntryName; /* entry name in tree format. ex: 'icudt28b/coll/ar.res' */
- TinyString tocEntryPath; /* entry name in path format. ex: 'icudt28b\\coll\\ar.res' */
-
- TinyString pkgName;
- TinyString treeName;
-#if (U_FILE_SEP_CHAR != U_FILE_ALT_SEP_CHAR) /* '/' vs '\' */
- TinyString altSepPath;
-#endif
-
- 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 */
- TinyString_init(&altSepPath);
- if(path) {
- char *p;
- if((p=uprv_strchr(path,U_FILE_ALT_SEP_CHAR))) {
- TinyString_append(&altSepPath, path);
- while((p=uprv_strchr(altSepPath.s,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.s;
- }
- }
-#endif
-
- TinyString_init(&tocEntryName);
- TinyString_init(&tocEntryPath);
-
- TinyString_init(&pkgName);
- TinyString_init(&treeName);
-
- /* ======= Set up strings */
- if(path==NULL) {
- TinyString_append(&pkgName, U_ICUDATA_NAME);
- } 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) {
- TinyString_append(&pkgName, pkg+1);
- } else {
- TinyString_append(&pkgName, path);
- }
- } else {
- treeChar = uprv_strchr(path, U_TREE_SEPARATOR);
- if(treeChar) {
- TinyString_append(&treeName, treeChar+1); /* following '-' */
- if(isICUData) {
- TinyString_append(&pkgName, U_ICUDATA_NAME);
- } else {
- TinyString_appendn(&pkgName, path, (int32_t)(treeChar-path));
- 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.s;
- }
- }
- } else {
- if(isICUData) {
- TinyString_append(&pkgName, U_ICUDATA_NAME);
- } else {
- TinyString_append(&pkgName, path);
- }
- }
- }
- }
-
-#ifdef UDATA_DEBUG
- fprintf(stderr, " P=%s T=%s\n", pkgName.s, treeName.s);
-#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 */
- TinyString_append(&tocEntryName, pkgName.s);
- TinyString_append(&tocEntryPath, pkgName.s);
- tocEntrySuffixIndex = tocEntryName.length;
-
- if(treeName.s[0]) {
- TinyString_append(&tocEntryName, U_TREE_ENTRY_SEP_STRING);
- TinyString_append(&tocEntryName, treeName.s);
-
- TinyString_append(&tocEntryPath, U_FILE_SEP_STRING);
- TinyString_append(&tocEntryPath, treeName.s);
- }
-
- TinyString_append(&tocEntryName, U_TREE_ENTRY_SEP_STRING);
- TinyString_append(&tocEntryPath, U_FILE_SEP_STRING);
- TinyString_append(&tocEntryName, name);
- TinyString_append(&tocEntryPath, name);
- if(type!=NULL && *type!=0) {
- TinyString_append(&tocEntryName, ".");
- TinyString_append(&tocEntryName, type);
- TinyString_append(&tocEntryPath, ".");
- TinyString_append(&tocEntryPath, type);
- }
- tocEntryPathSuffix = tocEntryPath.s+tocEntrySuffixIndex; /* suffix starts here */
-
-#ifdef UDATA_DEBUG
- fprintf(stderr, " tocEntryName = %s\n", tocEntryName.s);
- fprintf(stderr, " tocEntryPath = %s\n", tocEntryName.s);
-#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", inBasename, 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.s, dataPath, tocEntryPathSuffix, tocEntryName.s,
- path, type, name, isAcceptable, context, &subErrorCode, pErrorCode);
- if((retVal != NULL) || U_FAILURE(*pErrorCode)) {
- goto commonReturn;
- }
- }
-
- /**** 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.s, dataPath, tocEntryPathSuffix,
- path, type, name, isAcceptable, context, &subErrorCode, pErrorCode);
- if((retVal != NULL) || U_FAILURE(*pErrorCode)) {
- goto commonReturn;
- }
- }
- }
-
- /**** 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.s, dataPath, tocEntryPathSuffix, tocEntryName.s,
- path, type, name, isAcceptable, context, &subErrorCode, pErrorCode);
- if((retVal != NULL) || U_FAILURE(*pErrorCode)) {
- goto commonReturn;
- }
- }
-
- /* 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.s, "", tocEntryPathSuffix, tocEntryName.s,
- path, type, name, isAcceptable, context, &subErrorCode, pErrorCode);
- if((retVal != NULL) || U_FAILURE(*pErrorCode)) {
- goto commonReturn;
- }
- }
-
- /* 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;
- }
- }
-
-commonReturn:
- TinyString_dt(&tocEntryName);
- TinyString_dt(&tocEntryPath);
- TinyString_dt(&pkgName);
- TinyString_dt(&treeName);
-#if (U_FILE_SEP_CHAR != U_FILE_ALT_SEP_CHAR)
- TinyString_dt(&altSepPath);
-#endif
- 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;
-}
-
projects / apple / icu.git / blobdiff