407 lines
12 KiB
C
407 lines
12 KiB
C
/*
|
|
*******************************************************************************
|
|
* *
|
|
* Copyright (C) 1999-2002, International Business Machines Corporation *
|
|
* and others. All Rights Reserved. *
|
|
* *
|
|
*******************************************************************************
|
|
* file name: uresdata.c
|
|
* encoding: US-ASCII
|
|
* tab size: 8 (not used)
|
|
* indentation:4
|
|
*
|
|
* created on: 1999dec08
|
|
* created by: Markus W. Scherer
|
|
* Modification History:
|
|
*
|
|
* Date Name Description
|
|
* 06/20/2000 helena OS/400 port changes; mostly typecast.
|
|
* 06/24/02 weiv Added support for resource sharing
|
|
*/
|
|
|
|
#include "unicode/utypes.h"
|
|
#include "cstring.h"
|
|
#include "unicode/udata.h"
|
|
#include "uresdata.h"
|
|
#include "uresimp.h"
|
|
|
|
/*
|
|
* Resource access helpers
|
|
*/
|
|
|
|
/* get a const char* pointer to the key with the keyOffset byte offset from pRoot */
|
|
#define RES_GET_KEY(pRoot, keyOffset) ((const char *)(pRoot)+(keyOffset))
|
|
#define URESDATA_ITEM_NOT_FOUND 0xFFFF
|
|
|
|
/*
|
|
* All the type-access functions assume that
|
|
* the resource is of the expected type.
|
|
*/
|
|
|
|
|
|
/*
|
|
* Array functions
|
|
*/
|
|
static Resource
|
|
_res_getArrayItem(Resource *pRoot, Resource res, int32_t indexR) {
|
|
int32_t *p=(int32_t *)RES_GET_POINTER(pRoot, res);
|
|
if(indexR<*p) {
|
|
return ((Resource *)(p))[1+indexR];
|
|
} else {
|
|
return RES_BOGUS; /* indexR>itemCount */
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Table functions
|
|
*
|
|
* Important: the key offsets are 16-bit byte offsets from pRoot,
|
|
* and the itemCount is one more 16-bit, too.
|
|
* Thus, there are (count+1) uint16_t values.
|
|
* In order to 4-align the Resource item values, there is a padding
|
|
* word if count is even, i.e., there is exactly (~count&1)
|
|
* 16-bit padding words.
|
|
*/
|
|
static const char *
|
|
_res_getTableKey(const Resource *pRoot, const Resource res, uint16_t indexS) {
|
|
uint16_t *p=(uint16_t *)RES_GET_POINTER(pRoot, res);
|
|
if(indexS<*p) {
|
|
return RES_GET_KEY(pRoot, p[indexS+1]);
|
|
} else {
|
|
return NULL; /* indexS>itemCount */
|
|
}
|
|
}
|
|
|
|
static Resource
|
|
_res_getTableItem(const Resource *pRoot, const Resource res, uint16_t indexR) {
|
|
uint16_t *p=(uint16_t *)RES_GET_POINTER(pRoot, res);
|
|
uint16_t count=*p;
|
|
if(indexR<count) {
|
|
return ((Resource *)(p+1+count+(~count&1)))[indexR];
|
|
} else {
|
|
return RES_BOGUS; /* indexR>itemCount */
|
|
}
|
|
}
|
|
|
|
static Resource
|
|
_res_findTableItem(const Resource *pRoot, const Resource res, const char *key) {
|
|
uint16_t *p=(uint16_t *)RES_GET_POINTER(pRoot, res);
|
|
uint16_t i, start, limit;
|
|
|
|
limit=*p++; /* number of entries */
|
|
|
|
if(limit == 0) { /* this table is empty */
|
|
return RES_BOGUS;
|
|
}
|
|
|
|
/* do a binary search for the key */
|
|
start=0;
|
|
while(start<limit-1) {
|
|
i=(uint16_t)((start+limit)/2);
|
|
if(uprv_strcmp(key, RES_GET_KEY(pRoot, p[i]))<0) {
|
|
limit=i;
|
|
} else {
|
|
start=i;
|
|
}
|
|
}
|
|
|
|
/* did we really find it? */
|
|
if(uprv_strcmp(key, RES_GET_KEY(pRoot, p[start]))==0) {
|
|
limit=*(p-1); /* itemCount */
|
|
return ((Resource *)(p+limit+(~limit&1)))[start];
|
|
} else {
|
|
return RES_BOGUS; /* not found */
|
|
}
|
|
}
|
|
|
|
static Resource
|
|
_res_findTableItemN(const Resource *pRoot, const Resource res, const char *key, int32_t keyLen) {
|
|
uint16_t *p=(uint16_t *)RES_GET_POINTER(pRoot, res);
|
|
uint16_t i, start, limit;
|
|
|
|
limit=*p++; /* number of entries */
|
|
|
|
if(limit == 0) { /* this table is empty */
|
|
return RES_BOGUS;
|
|
}
|
|
|
|
/* do a binary search for the key */
|
|
start=0;
|
|
while(start<limit-1) {
|
|
i=(uint16_t)((start+limit)/2);
|
|
if(uprv_strncmp(key, RES_GET_KEY(pRoot, p[i]), keyLen)<0) {
|
|
limit=i;
|
|
} else {
|
|
start=i;
|
|
}
|
|
}
|
|
|
|
/* did we really find it? */
|
|
if(uprv_strncmp(key, RES_GET_KEY(pRoot, p[start]), keyLen)==0) {
|
|
limit=*(p-1); /* itemCount */
|
|
return ((Resource *)(p+limit+(~limit&1)))[start];
|
|
} else {
|
|
return RES_BOGUS; /* not found */
|
|
}
|
|
}
|
|
|
|
static uint16_t
|
|
_res_findTableIndex(const Resource *pRoot, const Resource res, const char *key) {
|
|
uint16_t *p=(uint16_t *)RES_GET_POINTER(pRoot, res);
|
|
uint16_t i, start, limit;
|
|
|
|
limit=*p++; /* number of entries */
|
|
|
|
if(limit == 0) { /* this table is empty */
|
|
return URESDATA_ITEM_NOT_FOUND;
|
|
}
|
|
|
|
/* do a binary search for the key */
|
|
start=0;
|
|
while(start<limit-1) {
|
|
i=(uint16_t)((start+limit)/2);
|
|
if(uprv_strcmp(key, RES_GET_KEY(pRoot, p[i]))<0) {
|
|
limit=i;
|
|
} else {
|
|
start=i;
|
|
}
|
|
}
|
|
|
|
/* did we really find it? */
|
|
if(uprv_strcmp(key, RES_GET_KEY(pRoot, p[start]))==0) {
|
|
limit=*(p-1); /* itemCount */
|
|
return start;
|
|
} else {
|
|
return URESDATA_ITEM_NOT_FOUND; /* not found */
|
|
}
|
|
}
|
|
|
|
/* helper for res_load() ---------------------------------------------------- */
|
|
|
|
static UBool
|
|
isAcceptable(void *context,
|
|
const char *type, const char *name,
|
|
const UDataInfo *pInfo) {
|
|
return (UBool)(
|
|
pInfo->size>=20 &&
|
|
pInfo->isBigEndian==U_IS_BIG_ENDIAN &&
|
|
pInfo->charsetFamily==U_CHARSET_FAMILY &&
|
|
pInfo->sizeofUChar==U_SIZEOF_UCHAR &&
|
|
pInfo->dataFormat[0]==0x52 && /* dataFormat="ResB" */
|
|
pInfo->dataFormat[1]==0x65 &&
|
|
pInfo->dataFormat[2]==0x73 &&
|
|
pInfo->dataFormat[3]==0x42 &&
|
|
pInfo->formatVersion[0]==1);
|
|
}
|
|
|
|
/* semi-public functions ---------------------------------------------------- */
|
|
|
|
U_CFUNC UBool
|
|
res_load(ResourceData *pResData,
|
|
const char *path, const char *name, UErrorCode *errorCode) {
|
|
/* load the ResourceBundle file */
|
|
pResData->data=udata_openChoice(path, "res", name, isAcceptable, NULL, errorCode);
|
|
if(U_FAILURE(*errorCode)) {
|
|
return FALSE;
|
|
}
|
|
|
|
/* get its memory and root resource */
|
|
pResData->pRoot=(Resource *)udata_getMemory(pResData->data);
|
|
pResData->rootRes=*pResData->pRoot;
|
|
|
|
/* currently, we accept only resources that have a Table as their roots */
|
|
if(RES_GET_TYPE(pResData->rootRes)!=RES_TABLE) {
|
|
udata_close(pResData->data);
|
|
pResData->data=NULL;
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
U_CFUNC void
|
|
res_unload(ResourceData *pResData) {
|
|
if(pResData->data!=NULL) {
|
|
udata_close(pResData->data);
|
|
pResData->data=NULL;
|
|
}
|
|
}
|
|
|
|
U_CFUNC const UChar *
|
|
res_getString(const ResourceData *pResData, const Resource res, int32_t *pLength) {
|
|
if(res!=RES_BOGUS && RES_GET_TYPE(res)==RES_STRING) {
|
|
int32_t *p=(int32_t *)RES_GET_POINTER(pResData->pRoot, res);
|
|
if (pLength) {
|
|
*pLength=*p;
|
|
}
|
|
return (UChar *)++p;
|
|
} else {
|
|
if (pLength) {
|
|
*pLength=0;
|
|
}
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
U_CFUNC const UChar *
|
|
res_getAlias(const ResourceData *pResData, const Resource res, int32_t *pLength) {
|
|
if(res!=RES_BOGUS && RES_GET_TYPE(res)==RES_ALIAS) {
|
|
int32_t *p=(int32_t *)RES_GET_POINTER(pResData->pRoot, res);
|
|
if (pLength) {
|
|
*pLength=*p;
|
|
}
|
|
return (UChar *)++p;
|
|
} else {
|
|
if (pLength) {
|
|
*pLength=0;
|
|
}
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
U_CFUNC const uint8_t *
|
|
res_getBinary(const ResourceData *pResData, const Resource res, int32_t *pLength) {
|
|
if(res!=RES_BOGUS) {
|
|
int32_t *p=(int32_t *)RES_GET_POINTER(pResData->pRoot, res);
|
|
*pLength=*p++;
|
|
if (*pLength == 0) {
|
|
p = NULL;
|
|
}
|
|
return (uint8_t *)p;
|
|
} else {
|
|
*pLength=0;
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
|
|
U_CFUNC const int32_t *
|
|
res_getIntVector(const ResourceData *pResData, const Resource res, int32_t *pLength) {
|
|
if(res!=RES_BOGUS && RES_GET_TYPE(res)==RES_INT_VECTOR) {
|
|
int32_t *p=(int32_t *)RES_GET_POINTER(pResData->pRoot, res);
|
|
*pLength=*p++;
|
|
if (*pLength == 0) {
|
|
p = NULL;
|
|
}
|
|
return (const int32_t *)p;
|
|
} else {
|
|
*pLength=0;
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
U_CFUNC int32_t
|
|
res_countArrayItems(const ResourceData *pResData, const Resource res) {
|
|
if(res!=RES_BOGUS) {
|
|
if(RES_GET_TYPE(res)==RES_STRING) {
|
|
return 1;
|
|
} else if(RES_GET_TYPE(res)==RES_ARRAY) {
|
|
Resource *p=RES_GET_POINTER(pResData->pRoot, res);
|
|
int32_t count=*(int32_t *)p;
|
|
return count;
|
|
} else if(RES_GET_TYPE(res)==RES_TABLE) {
|
|
return res_getTableSize(pResData, res);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
U_CFUNC Resource
|
|
res_getResource(const ResourceData *pResData, const char *key) {
|
|
return _res_findTableItem(pResData->pRoot, pResData->rootRes, key);
|
|
}
|
|
|
|
U_CFUNC Resource
|
|
res_getArrayItem(const ResourceData *pResData, Resource array, const int32_t indexR) {
|
|
return _res_getArrayItem(pResData->pRoot, array, indexR);
|
|
}
|
|
|
|
U_CFUNC Resource
|
|
res_findResource(const ResourceData *pResData, Resource r, const char** path) {
|
|
/* we pass in a path. CollationElements/Sequence or zoneStrings/3/2 etc.
|
|
* iterates over a path and stops when a scalar resource is found. This
|
|
* CAN be an alias. Path gets set to the part that has not yet been processed.
|
|
*/
|
|
|
|
const char *pathP = *path, *nextSepP = *path;
|
|
char *closeIndex = NULL;
|
|
Resource t1 = r;
|
|
Resource t2;
|
|
int32_t indexR = 0, keyLen = 0;
|
|
UResType type = RES_GET_TYPE(t1);
|
|
|
|
while(nextSepP && *pathP && t1 != RES_BOGUS && type >= RES_TABLE) {
|
|
/* Iteration stops if: the path has been consumed, we found a non-existing
|
|
* resource (t1 == RES_BOGUS) or we found a scalar resource (including alias)
|
|
*/
|
|
nextSepP = uprv_strchr(pathP, RES_PATH_SEPARATOR);
|
|
/* if there are more separators, terminate string
|
|
* and set path to the remaining part of the string
|
|
*/
|
|
if(nextSepP != NULL) {
|
|
keyLen = nextSepP-pathP;
|
|
*path = nextSepP+1;
|
|
} else {
|
|
keyLen = uprv_strlen(pathP);
|
|
*path += keyLen;
|
|
}
|
|
|
|
/* try the key based access */
|
|
t2 = _res_findTableItemN(pResData->pRoot, t1, pathP, keyLen);
|
|
if(t2 == RES_BOGUS) {
|
|
/* if we fail to get the resource by key, maybe we got an index */
|
|
indexR = uprv_strtol(pathP, &closeIndex, 10);
|
|
if(closeIndex != pathP) {
|
|
if(type == RES_TABLE) {
|
|
/* if we indeed have an index, try to get the item by index */
|
|
t2 = _res_getTableItem(pResData->pRoot, t1, (uint16_t)indexR);
|
|
} else { /* if(type == RES_ARRAY) { */
|
|
t2 = _res_getArrayItem(pResData->pRoot, t1, indexR);
|
|
}
|
|
}
|
|
}
|
|
t1 = t2;
|
|
type = RES_GET_TYPE(t1);
|
|
/* position pathP to next resource key/index */
|
|
pathP += keyLen+1;
|
|
}
|
|
|
|
return t1;
|
|
}
|
|
|
|
U_CFUNC Resource
|
|
res_getTableItemByKey(const ResourceData *pResData, Resource table, int32_t* indexR, const char* * key) {
|
|
uint16_t tempIndex;
|
|
if(key != NULL) {
|
|
tempIndex = _res_findTableIndex(pResData->pRoot, table, *key);
|
|
if(tempIndex != URESDATA_ITEM_NOT_FOUND) {
|
|
*key = _res_getTableKey(pResData->pRoot, table, tempIndex);
|
|
*indexR = tempIndex;
|
|
return _res_getTableItem(pResData->pRoot, table, tempIndex);
|
|
} else {
|
|
return RES_BOGUS;
|
|
}
|
|
} else {
|
|
return RES_BOGUS;
|
|
}
|
|
}
|
|
|
|
U_CFUNC Resource
|
|
res_getTableItemByIndex(const ResourceData *pResData, Resource table, int32_t indexR, const char * * key) {
|
|
if(indexR>-1) {
|
|
if(key != NULL) {
|
|
*key = _res_getTableKey(pResData->pRoot, table, (uint16_t)indexR);
|
|
}
|
|
return _res_getTableItem(pResData->pRoot, table, (uint16_t)indexR);
|
|
} else {
|
|
return RES_BOGUS;
|
|
}
|
|
}
|
|
|
|
U_CFUNC int32_t
|
|
res_getTableSize(const ResourceData *pResData, Resource table) {
|
|
uint16_t *p=(uint16_t *)RES_GET_POINTER(pResData->pRoot, table);
|
|
return *p;
|
|
}
|
|
|