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ResourceTypes.cpp
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ResourceTypes.cpp
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/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "ResourceType"
//#define LOG_NDEBUG 0
#include <utils/Atomic.h>
#include <utils/ByteOrder.h>
#include <utils/Debug.h>
#include <utils/ResourceTypes.h>
#include <utils/String16.h>
#include <utils/String8.h>
#include <utils/TextOutput.h>
#include <utils/Log.h>
#include <stdlib.h>
#include <string.h>
#include <memory.h>
#include <ctype.h>
#include <stdint.h>
#ifndef INT32_MAX
#define INT32_MAX ((int32_t)(2147483647))
#endif
#define POOL_NOISY(x) //x
#define XML_NOISY(x) //x
#define TABLE_NOISY(x) //x
#define TABLE_GETENTRY(x) //x
#define TABLE_SUPER_NOISY(x) //x
#define LOAD_TABLE_NOISY(x) //x
#define TABLE_THEME(x) //x
namespace android {
#ifdef HAVE_WINSOCK
#undef nhtol
#undef htonl
#ifdef HAVE_LITTLE_ENDIAN
#define ntohl(x) ( ((x) << 24) | (((x) >> 24) & 255) | (((x) << 8) & 0xff0000) | (((x) >> 8) & 0xff00) )
#define htonl(x) ntohl(x)
#define ntohs(x) ( (((x) << 8) & 0xff00) | (((x) >> 8) & 255) )
#define htons(x) ntohs(x)
#else
#define ntohl(x) (x)
#define htonl(x) (x)
#define ntohs(x) (x)
#define htons(x) (x)
#endif
#endif
#define IDMAP_MAGIC 0x706d6469
// size measured in sizeof(uint32_t)
#define IDMAP_HEADER_SIZE (ResTable::IDMAP_HEADER_SIZE_BYTES / sizeof(uint32_t))
static void printToLogFunc(void* cookie, const char* txt)
{
LOGV("%s", txt);
}
// Standard C isspace() is only required to look at the low byte of its input, so
// produces incorrect results for UTF-16 characters. For safety's sake, assume that
// any high-byte UTF-16 code point is not whitespace.
inline int isspace16(char16_t c) {
return (c < 0x0080 && isspace(c));
}
// range checked; guaranteed to NUL-terminate within the stated number of available slots
// NOTE: if this truncates the dst string due to running out of space, no attempt is
// made to avoid splitting surrogate pairs.
static void strcpy16_dtoh(uint16_t* dst, const uint16_t* src, size_t avail)
{
uint16_t* last = dst + avail - 1;
while (*src && (dst < last)) {
char16_t s = dtohs(*src);
*dst++ = s;
src++;
}
*dst = 0;
}
static status_t validate_chunk(const ResChunk_header* chunk,
size_t minSize,
const uint8_t* dataEnd,
const char* name)
{
const uint16_t headerSize = dtohs(chunk->headerSize);
const uint32_t size = dtohl(chunk->size);
if (headerSize >= minSize) {
if (headerSize <= size) {
if (((headerSize|size)&0x3) == 0) {
if ((ssize_t)size <= (dataEnd-((const uint8_t*)chunk))) {
return NO_ERROR;
}
LOGW("%s data size %p extends beyond resource end %p.",
name, (void*)size,
(void*)(dataEnd-((const uint8_t*)chunk)));
return BAD_TYPE;
}
LOGW("%s size 0x%x or headerSize 0x%x is not on an integer boundary.",
name, (int)size, (int)headerSize);
return BAD_TYPE;
}
LOGW("%s size %p is smaller than header size %p.",
name, (void*)size, (void*)(int)headerSize);
return BAD_TYPE;
}
LOGW("%s header size %p is too small.",
name, (void*)(int)headerSize);
return BAD_TYPE;
}
inline void Res_value::copyFrom_dtoh(const Res_value& src)
{
size = dtohs(src.size);
res0 = src.res0;
dataType = src.dataType;
data = dtohl(src.data);
}
void Res_png_9patch::deviceToFile()
{
for (int i = 0; i < numXDivs; i++) {
xDivs[i] = htonl(xDivs[i]);
}
for (int i = 0; i < numYDivs; i++) {
yDivs[i] = htonl(yDivs[i]);
}
paddingLeft = htonl(paddingLeft);
paddingRight = htonl(paddingRight);
paddingTop = htonl(paddingTop);
paddingBottom = htonl(paddingBottom);
for (int i=0; i<numColors; i++) {
colors[i] = htonl(colors[i]);
}
}
void Res_png_9patch::fileToDevice()
{
for (int i = 0; i < numXDivs; i++) {
xDivs[i] = ntohl(xDivs[i]);
}
for (int i = 0; i < numYDivs; i++) {
yDivs[i] = ntohl(yDivs[i]);
}
paddingLeft = ntohl(paddingLeft);
paddingRight = ntohl(paddingRight);
paddingTop = ntohl(paddingTop);
paddingBottom = ntohl(paddingBottom);
for (int i=0; i<numColors; i++) {
colors[i] = ntohl(colors[i]);
}
}
size_t Res_png_9patch::serializedSize()
{
// The size of this struct is 32 bytes on the 32-bit target system
// 4 * int8_t
// 4 * int32_t
// 3 * pointer
return 32
+ numXDivs * sizeof(int32_t)
+ numYDivs * sizeof(int32_t)
+ numColors * sizeof(uint32_t);
}
void* Res_png_9patch::serialize()
{
// Use calloc since we're going to leave a few holes in the data
// and want this to run cleanly under valgrind
void* newData = calloc(1, serializedSize());
serialize(newData);
return newData;
}
void Res_png_9patch::serialize(void * outData)
{
char* data = (char*) outData;
memmove(data, &wasDeserialized, 4); // copy wasDeserialized, numXDivs, numYDivs, numColors
memmove(data + 12, &paddingLeft, 16); // copy paddingXXXX
data += 32;
memmove(data, this->xDivs, numXDivs * sizeof(int32_t));
data += numXDivs * sizeof(int32_t);
memmove(data, this->yDivs, numYDivs * sizeof(int32_t));
data += numYDivs * sizeof(int32_t);
memmove(data, this->colors, numColors * sizeof(uint32_t));
}
static void deserializeInternal(const void* inData, Res_png_9patch* outData) {
char* patch = (char*) inData;
if (inData != outData) {
memmove(&outData->wasDeserialized, patch, 4); // copy wasDeserialized, numXDivs, numYDivs, numColors
memmove(&outData->paddingLeft, patch + 12, 4); // copy wasDeserialized, numXDivs, numYDivs, numColors
}
outData->wasDeserialized = true;
char* data = (char*)outData;
data += sizeof(Res_png_9patch);
outData->xDivs = (int32_t*) data;
data += outData->numXDivs * sizeof(int32_t);
outData->yDivs = (int32_t*) data;
data += outData->numYDivs * sizeof(int32_t);
outData->colors = (uint32_t*) data;
}
static bool assertIdmapHeader(const uint32_t* map, size_t sizeBytes)
{
if (sizeBytes < ResTable::IDMAP_HEADER_SIZE_BYTES) {
LOGW("idmap assertion failed: size=%d bytes\n", sizeBytes);
return false;
}
if (*map != htodl(IDMAP_MAGIC)) { // htodl: map data expected to be in correct endianess
LOGW("idmap assertion failed: invalid magic found (is 0x%08x, expected 0x%08x)\n",
*map, htodl(IDMAP_MAGIC));
return false;
}
return true;
}
static status_t idmapLookup(const uint32_t* map, size_t sizeBytes, uint32_t key, uint32_t* outValue)
{
// see README for details on the format of map
if (!assertIdmapHeader(map, sizeBytes)) {
return UNKNOWN_ERROR;
}
map = map + IDMAP_HEADER_SIZE; // skip ahead to data segment
// size of data block, in uint32_t
const size_t size = (sizeBytes - ResTable::IDMAP_HEADER_SIZE_BYTES) / sizeof(uint32_t);
const uint32_t type = Res_GETTYPE(key) + 1; // add one, idmap stores "public" type id
const uint32_t entry = Res_GETENTRY(key);
const uint32_t typeCount = *map;
if (type > typeCount) {
LOGW("Resource ID map: type=%d exceeds number of types=%d\n", type, typeCount);
return UNKNOWN_ERROR;
}
if (typeCount > size) {
LOGW("Resource ID map: number of types=%d exceeds size of map=%d\n", typeCount, size);
return UNKNOWN_ERROR;
}
const uint32_t typeOffset = map[type];
if (typeOffset == 0) {
*outValue = 0;
return NO_ERROR;
}
if (typeOffset + 1 > size) {
LOGW("Resource ID map: type offset=%d exceeds reasonable value, size of map=%d\n",
typeOffset, size);
return UNKNOWN_ERROR;
}
const uint32_t entryCount = map[typeOffset];
const uint32_t entryOffset = map[typeOffset + 1];
if (entryCount == 0 || entry < entryOffset || entry - entryOffset > entryCount - 1) {
*outValue = 0;
return NO_ERROR;
}
const uint32_t index = typeOffset + 2 + entry - entryOffset;
if (index > size) {
LOGW("Resource ID map: entry index=%d exceeds size of map=%d\n", index, size);
*outValue = 0;
return NO_ERROR;
}
*outValue = map[index];
return NO_ERROR;
}
static status_t getIdmapPackageId(const uint32_t* map, size_t mapSize, uint32_t *outId)
{
if (!assertIdmapHeader(map, mapSize)) {
return UNKNOWN_ERROR;
}
const uint32_t* p = map + IDMAP_HEADER_SIZE + 1;
while (*p == 0) {
++p;
}
*outId = (map[*p + IDMAP_HEADER_SIZE + 2] >> 24) & 0x000000ff;
return NO_ERROR;
}
Res_png_9patch* Res_png_9patch::deserialize(const void* inData)
{
if (sizeof(void*) != sizeof(int32_t)) {
LOGE("Cannot deserialize on non 32-bit system\n");
return NULL;
}
deserializeInternal(inData, (Res_png_9patch*) inData);
return (Res_png_9patch*) inData;
}
// --------------------------------------------------------------------
// --------------------------------------------------------------------
// --------------------------------------------------------------------
ResStringPool::ResStringPool()
: mError(NO_INIT), mOwnedData(NULL), mHeader(NULL), mCache(NULL)
{
}
ResStringPool::ResStringPool(const void* data, size_t size, bool copyData)
: mError(NO_INIT), mOwnedData(NULL), mHeader(NULL), mCache(NULL)
{
setTo(data, size, copyData);
}
ResStringPool::~ResStringPool()
{
uninit();
}
status_t ResStringPool::setTo(const void* data, size_t size, bool copyData)
{
if (!data || !size) {
return (mError=BAD_TYPE);
}
uninit();
const bool notDeviceEndian = htods(0xf0) != 0xf0;
if (copyData || notDeviceEndian) {
mOwnedData = malloc(size);
if (mOwnedData == NULL) {
return (mError=NO_MEMORY);
}
memcpy(mOwnedData, data, size);
data = mOwnedData;
}
mHeader = (const ResStringPool_header*)data;
if (notDeviceEndian) {
ResStringPool_header* h = const_cast<ResStringPool_header*>(mHeader);
h->header.headerSize = dtohs(mHeader->header.headerSize);
h->header.type = dtohs(mHeader->header.type);
h->header.size = dtohl(mHeader->header.size);
h->stringCount = dtohl(mHeader->stringCount);
h->styleCount = dtohl(mHeader->styleCount);
h->flags = dtohl(mHeader->flags);
h->stringsStart = dtohl(mHeader->stringsStart);
h->stylesStart = dtohl(mHeader->stylesStart);
}
if (mHeader->header.headerSize > mHeader->header.size
|| mHeader->header.size > size) {
LOGW("Bad string block: header size %d or total size %d is larger than data size %d\n",
(int)mHeader->header.headerSize, (int)mHeader->header.size, (int)size);
return (mError=BAD_TYPE);
}
mSize = mHeader->header.size;
mEntries = (const uint32_t*)
(((const uint8_t*)data)+mHeader->header.headerSize);
if (mHeader->stringCount > 0) {
if ((mHeader->stringCount*sizeof(uint32_t) < mHeader->stringCount) // uint32 overflow?
|| (mHeader->header.headerSize+(mHeader->stringCount*sizeof(uint32_t)))
> size) {
LOGW("Bad string block: entry of %d items extends past data size %d\n",
(int)(mHeader->header.headerSize+(mHeader->stringCount*sizeof(uint32_t))),
(int)size);
return (mError=BAD_TYPE);
}
size_t charSize;
if (mHeader->flags&ResStringPool_header::UTF8_FLAG) {
charSize = sizeof(uint8_t);
mCache = (char16_t**)malloc(sizeof(char16_t**)*mHeader->stringCount);
memset(mCache, 0, sizeof(char16_t**)*mHeader->stringCount);
} else {
charSize = sizeof(char16_t);
}
mStrings = (const void*)
(((const uint8_t*)data)+mHeader->stringsStart);
if (mHeader->stringsStart >= (mHeader->header.size-sizeof(uint16_t))) {
LOGW("Bad string block: string pool starts at %d, after total size %d\n",
(int)mHeader->stringsStart, (int)mHeader->header.size);
return (mError=BAD_TYPE);
}
if (mHeader->styleCount == 0) {
mStringPoolSize =
(mHeader->header.size-mHeader->stringsStart)/charSize;
} else {
// check invariant: styles starts before end of data
if (mHeader->stylesStart >= (mHeader->header.size-sizeof(uint16_t))) {
LOGW("Bad style block: style block starts at %d past data size of %d\n",
(int)mHeader->stylesStart, (int)mHeader->header.size);
return (mError=BAD_TYPE);
}
// check invariant: styles follow the strings
if (mHeader->stylesStart <= mHeader->stringsStart) {
LOGW("Bad style block: style block starts at %d, before strings at %d\n",
(int)mHeader->stylesStart, (int)mHeader->stringsStart);
return (mError=BAD_TYPE);
}
mStringPoolSize =
(mHeader->stylesStart-mHeader->stringsStart)/charSize;
}
// check invariant: stringCount > 0 requires a string pool to exist
if (mStringPoolSize == 0) {
LOGW("Bad string block: stringCount is %d but pool size is 0\n", (int)mHeader->stringCount);
return (mError=BAD_TYPE);
}
if (notDeviceEndian) {
size_t i;
uint32_t* e = const_cast<uint32_t*>(mEntries);
for (i=0; i<mHeader->stringCount; i++) {
e[i] = dtohl(mEntries[i]);
}
if (!(mHeader->flags&ResStringPool_header::UTF8_FLAG)) {
const char16_t* strings = (const char16_t*)mStrings;
char16_t* s = const_cast<char16_t*>(strings);
for (i=0; i<mStringPoolSize; i++) {
s[i] = dtohs(strings[i]);
}
}
}
if ((mHeader->flags&ResStringPool_header::UTF8_FLAG &&
((uint8_t*)mStrings)[mStringPoolSize-1] != 0) ||
(!mHeader->flags&ResStringPool_header::UTF8_FLAG &&
((char16_t*)mStrings)[mStringPoolSize-1] != 0)) {
LOGW("Bad string block: last string is not 0-terminated\n");
return (mError=BAD_TYPE);
}
} else {
mStrings = NULL;
mStringPoolSize = 0;
}
if (mHeader->styleCount > 0) {
mEntryStyles = mEntries + mHeader->stringCount;
// invariant: integer overflow in calculating mEntryStyles
if (mEntryStyles < mEntries) {
LOGW("Bad string block: integer overflow finding styles\n");
return (mError=BAD_TYPE);
}
if (((const uint8_t*)mEntryStyles-(const uint8_t*)mHeader) > (int)size) {
LOGW("Bad string block: entry of %d styles extends past data size %d\n",
(int)((const uint8_t*)mEntryStyles-(const uint8_t*)mHeader),
(int)size);
return (mError=BAD_TYPE);
}
mStyles = (const uint32_t*)
(((const uint8_t*)data)+mHeader->stylesStart);
if (mHeader->stylesStart >= mHeader->header.size) {
LOGW("Bad string block: style pool starts %d, after total size %d\n",
(int)mHeader->stylesStart, (int)mHeader->header.size);
return (mError=BAD_TYPE);
}
mStylePoolSize =
(mHeader->header.size-mHeader->stylesStart)/sizeof(uint32_t);
if (notDeviceEndian) {
size_t i;
uint32_t* e = const_cast<uint32_t*>(mEntryStyles);
for (i=0; i<mHeader->styleCount; i++) {
e[i] = dtohl(mEntryStyles[i]);
}
uint32_t* s = const_cast<uint32_t*>(mStyles);
for (i=0; i<mStylePoolSize; i++) {
s[i] = dtohl(mStyles[i]);
}
}
const ResStringPool_span endSpan = {
{ htodl(ResStringPool_span::END) },
htodl(ResStringPool_span::END), htodl(ResStringPool_span::END)
};
if (memcmp(&mStyles[mStylePoolSize-(sizeof(endSpan)/sizeof(uint32_t))],
&endSpan, sizeof(endSpan)) != 0) {
LOGW("Bad string block: last style is not 0xFFFFFFFF-terminated\n");
return (mError=BAD_TYPE);
}
} else {
mEntryStyles = NULL;
mStyles = NULL;
mStylePoolSize = 0;
}
return (mError=NO_ERROR);
}
status_t ResStringPool::getError() const
{
return mError;
}
void ResStringPool::uninit()
{
mError = NO_INIT;
if (mOwnedData) {
free(mOwnedData);
mOwnedData = NULL;
}
if (mHeader != NULL && mCache != NULL) {
for (size_t x = 0; x < mHeader->stringCount; x++) {
if (mCache[x] != NULL) {
free(mCache[x]);
mCache[x] = NULL;
}
}
free(mCache);
mCache = NULL;
}
}
/**
* Strings in UTF-16 format have length indicated by a length encoded in the
* stored data. It is either 1 or 2 characters of length data. This allows a
* maximum length of 0x7FFFFFF (2147483647 bytes), but if you're storing that
* much data in a string, you're abusing them.
*
* If the high bit is set, then there are two characters or 4 bytes of length
* data encoded. In that case, drop the high bit of the first character and
* add it together with the next character.
*/
static inline size_t
decodeLength(const char16_t** str)
{
size_t len = **str;
if ((len & 0x8000) != 0) {
(*str)++;
len = ((len & 0x7FFF) << 16) | **str;
}
(*str)++;
return len;
}
/**
* Strings in UTF-8 format have length indicated by a length encoded in the
* stored data. It is either 1 or 2 characters of length data. This allows a
* maximum length of 0x7FFF (32767 bytes), but you should consider storing
* text in another way if you're using that much data in a single string.
*
* If the high bit is set, then there are two characters or 2 bytes of length
* data encoded. In that case, drop the high bit of the first character and
* add it together with the next character.
*/
static inline size_t
decodeLength(const uint8_t** str)
{
size_t len = **str;
if ((len & 0x80) != 0) {
(*str)++;
len = ((len & 0x7F) << 8) | **str;
}
(*str)++;
return len;
}
const uint16_t* ResStringPool::stringAt(size_t idx, size_t* u16len) const
{
if (mError == NO_ERROR && idx < mHeader->stringCount) {
const bool isUTF8 = (mHeader->flags&ResStringPool_header::UTF8_FLAG) != 0;
const uint32_t off = mEntries[idx]/(isUTF8?sizeof(char):sizeof(char16_t));
if (off < (mStringPoolSize-1)) {
if (!isUTF8) {
const char16_t* strings = (char16_t*)mStrings;
const char16_t* str = strings+off;
*u16len = decodeLength(&str);
if ((uint32_t)(str+*u16len-strings) < mStringPoolSize) {
return str;
} else {
LOGW("Bad string block: string #%d extends to %d, past end at %d\n",
(int)idx, (int)(str+*u16len-strings), (int)mStringPoolSize);
}
} else {
const uint8_t* strings = (uint8_t*)mStrings;
const uint8_t* u8str = strings+off;
*u16len = decodeLength(&u8str);
size_t u8len = decodeLength(&u8str);
// encLen must be less than 0x7FFF due to encoding.
if ((uint32_t)(u8str+u8len-strings) < mStringPoolSize) {
AutoMutex lock(mDecodeLock);
if (mCache[idx] != NULL) {
return mCache[idx];
}
ssize_t actualLen = utf8_to_utf16_length(u8str, u8len);
if (actualLen < 0 || (size_t)actualLen != *u16len) {
LOGW("Bad string block: string #%lld decoded length is not correct "
"%lld vs %llu\n",
(long long)idx, (long long)actualLen, (long long)*u16len);
return NULL;
}
char16_t *u16str = (char16_t *)calloc(*u16len+1, sizeof(char16_t));
if (!u16str) {
LOGW("No memory when trying to allocate decode cache for string #%d\n",
(int)idx);
return NULL;
}
utf8_to_utf16(u8str, u8len, u16str);
mCache[idx] = u16str;
return u16str;
} else {
LOGW("Bad string block: string #%lld extends to %lld, past end at %lld\n",
(long long)idx, (long long)(u8str+u8len-strings),
(long long)mStringPoolSize);
}
}
} else {
LOGW("Bad string block: string #%d entry is at %d, past end at %d\n",
(int)idx, (int)(off*sizeof(uint16_t)),
(int)(mStringPoolSize*sizeof(uint16_t)));
}
}
return NULL;
}
const char* ResStringPool::string8At(size_t idx, size_t* outLen) const
{
if (mError == NO_ERROR && idx < mHeader->stringCount) {
const bool isUTF8 = (mHeader->flags&ResStringPool_header::UTF8_FLAG) != 0;
const uint32_t off = mEntries[idx]/(isUTF8?sizeof(char):sizeof(char16_t));
if (off < (mStringPoolSize-1)) {
if (isUTF8) {
const uint8_t* strings = (uint8_t*)mStrings;
const uint8_t* str = strings+off;
*outLen = decodeLength(&str);
size_t encLen = decodeLength(&str);
if ((uint32_t)(str+encLen-strings) < mStringPoolSize) {
return (const char*)str;
} else {
LOGW("Bad string block: string #%d extends to %d, past end at %d\n",
(int)idx, (int)(str+encLen-strings), (int)mStringPoolSize);
}
}
} else {
LOGW("Bad string block: string #%d entry is at %d, past end at %d\n",
(int)idx, (int)(off*sizeof(uint16_t)),
(int)(mStringPoolSize*sizeof(uint16_t)));
}
}
return NULL;
}
const ResStringPool_span* ResStringPool::styleAt(const ResStringPool_ref& ref) const
{
return styleAt(ref.index);
}
const ResStringPool_span* ResStringPool::styleAt(size_t idx) const
{
if (mError == NO_ERROR && idx < mHeader->styleCount) {
const uint32_t off = (mEntryStyles[idx]/sizeof(uint32_t));
if (off < mStylePoolSize) {
return (const ResStringPool_span*)(mStyles+off);
} else {
LOGW("Bad string block: style #%d entry is at %d, past end at %d\n",
(int)idx, (int)(off*sizeof(uint32_t)),
(int)(mStylePoolSize*sizeof(uint32_t)));
}
}
return NULL;
}
ssize_t ResStringPool::indexOfString(const char16_t* str, size_t strLen) const
{
if (mError != NO_ERROR) {
return mError;
}
size_t len;
// TODO optimize searching for UTF-8 strings taking into account
// the cache fill to determine when to convert the searched-for
// string key to UTF-8.
if (mHeader->flags&ResStringPool_header::SORTED_FLAG) {
// Do a binary search for the string...
ssize_t l = 0;
ssize_t h = mHeader->stringCount-1;
ssize_t mid;
while (l <= h) {
mid = l + (h - l)/2;
const char16_t* s = stringAt(mid, &len);
int c = s ? strzcmp16(s, len, str, strLen) : -1;
POOL_NOISY(printf("Looking for %s, at %s, cmp=%d, l/mid/h=%d/%d/%d\n",
String8(str).string(),
String8(s).string(),
c, (int)l, (int)mid, (int)h));
if (c == 0) {
return mid;
} else if (c < 0) {
l = mid + 1;
} else {
h = mid - 1;
}
}
} else {
// It is unusual to get the ID from an unsorted string block...
// most often this happens because we want to get IDs for style
// span tags; since those always appear at the end of the string
// block, start searching at the back.
for (int i=mHeader->stringCount-1; i>=0; i--) {
const char16_t* s = stringAt(i, &len);
POOL_NOISY(printf("Looking for %s, at %s, i=%d\n",
String8(str, strLen).string(),
String8(s).string(),
i));
if (s && strzcmp16(s, len, str, strLen) == 0) {
return i;
}
}
}
return NAME_NOT_FOUND;
}
size_t ResStringPool::size() const
{
return (mError == NO_ERROR) ? mHeader->stringCount : 0;
}
#ifndef HAVE_ANDROID_OS
bool ResStringPool::isUTF8() const
{
return (mHeader->flags&ResStringPool_header::UTF8_FLAG)!=0;
}
#endif
// --------------------------------------------------------------------
// --------------------------------------------------------------------
// --------------------------------------------------------------------
ResXMLParser::ResXMLParser(const ResXMLTree& tree)
: mTree(tree), mEventCode(BAD_DOCUMENT)
{
}
void ResXMLParser::restart()
{
mCurNode = NULL;
mEventCode = mTree.mError == NO_ERROR ? START_DOCUMENT : BAD_DOCUMENT;
}
const ResStringPool& ResXMLParser::getStrings() const
{
return mTree.mStrings;
}
ResXMLParser::event_code_t ResXMLParser::getEventType() const
{
return mEventCode;
}
ResXMLParser::event_code_t ResXMLParser::next()
{
if (mEventCode == START_DOCUMENT) {
mCurNode = mTree.mRootNode;
mCurExt = mTree.mRootExt;
return (mEventCode=mTree.mRootCode);
} else if (mEventCode >= FIRST_CHUNK_CODE) {
return nextNode();
}
return mEventCode;
}
int32_t ResXMLParser::getCommentID() const
{
return mCurNode != NULL ? dtohl(mCurNode->comment.index) : -1;
}
const uint16_t* ResXMLParser::getComment(size_t* outLen) const
{
int32_t id = getCommentID();
return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
}
uint32_t ResXMLParser::getLineNumber() const
{
return mCurNode != NULL ? dtohl(mCurNode->lineNumber) : -1;
}
int32_t ResXMLParser::getTextID() const
{
if (mEventCode == TEXT) {
return dtohl(((const ResXMLTree_cdataExt*)mCurExt)->data.index);
}
return -1;
}
const uint16_t* ResXMLParser::getText(size_t* outLen) const
{
int32_t id = getTextID();
return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
}
ssize_t ResXMLParser::getTextValue(Res_value* outValue) const
{
if (mEventCode == TEXT) {
outValue->copyFrom_dtoh(((const ResXMLTree_cdataExt*)mCurExt)->typedData);
return sizeof(Res_value);
}
return BAD_TYPE;
}
int32_t ResXMLParser::getNamespacePrefixID() const
{
if (mEventCode == START_NAMESPACE || mEventCode == END_NAMESPACE) {
return dtohl(((const ResXMLTree_namespaceExt*)mCurExt)->prefix.index);
}
return -1;
}
const uint16_t* ResXMLParser::getNamespacePrefix(size_t* outLen) const
{
int32_t id = getNamespacePrefixID();
//printf("prefix=%d event=%p\n", id, mEventCode);
return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
}
int32_t ResXMLParser::getNamespaceUriID() const
{
if (mEventCode == START_NAMESPACE || mEventCode == END_NAMESPACE) {
return dtohl(((const ResXMLTree_namespaceExt*)mCurExt)->uri.index);
}
return -1;
}
const uint16_t* ResXMLParser::getNamespaceUri(size_t* outLen) const
{
int32_t id = getNamespaceUriID();
//printf("uri=%d event=%p\n", id, mEventCode);
return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
}
int32_t ResXMLParser::getElementNamespaceID() const
{
if (mEventCode == START_TAG) {
return dtohl(((const ResXMLTree_attrExt*)mCurExt)->ns.index);
}
if (mEventCode == END_TAG) {
return dtohl(((const ResXMLTree_endElementExt*)mCurExt)->ns.index);
}
return -1;
}
const uint16_t* ResXMLParser::getElementNamespace(size_t* outLen) const
{
int32_t id = getElementNamespaceID();
return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
}
int32_t ResXMLParser::getElementNameID() const
{
if (mEventCode == START_TAG) {
return dtohl(((const ResXMLTree_attrExt*)mCurExt)->name.index);
}
if (mEventCode == END_TAG) {
return dtohl(((const ResXMLTree_endElementExt*)mCurExt)->name.index);
}
return -1;
}
const uint16_t* ResXMLParser::getElementName(size_t* outLen) const
{
int32_t id = getElementNameID();
return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
}
size_t ResXMLParser::getAttributeCount() const
{
if (mEventCode == START_TAG) {
return dtohs(((const ResXMLTree_attrExt*)mCurExt)->attributeCount);
}
return 0;
}
int32_t ResXMLParser::getAttributeNamespaceID(size_t idx) const
{
if (mEventCode == START_TAG) {
const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
if (idx < dtohs(tag->attributeCount)) {
const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
(((const uint8_t*)tag)
+ dtohs(tag->attributeStart)
+ (dtohs(tag->attributeSize)*idx));
return dtohl(attr->ns.index);
}
}
return -2;
}
const uint16_t* ResXMLParser::getAttributeNamespace(size_t idx, size_t* outLen) const
{
int32_t id = getAttributeNamespaceID(idx);
//printf("attribute namespace=%d idx=%d event=%p\n", id, idx, mEventCode);
//XML_NOISY(printf("getAttributeNamespace 0x%x=0x%x\n", idx, id));
return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
}
int32_t ResXMLParser::getAttributeNameID(size_t idx) const
{
if (mEventCode == START_TAG) {
const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
if (idx < dtohs(tag->attributeCount)) {
const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
(((const uint8_t*)tag)
+ dtohs(tag->attributeStart)
+ (dtohs(tag->attributeSize)*idx));
return dtohl(attr->name.index);
}
}
return -1;
}
const uint16_t* ResXMLParser::getAttributeName(size_t idx, size_t* outLen) const
{
int32_t id = getAttributeNameID(idx);
//printf("attribute name=%d idx=%d event=%p\n", id, idx, mEventCode);
//XML_NOISY(printf("getAttributeName 0x%x=0x%x\n", idx, id));
return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
}
uint32_t ResXMLParser::getAttributeNameResID(size_t idx) const
{
int32_t id = getAttributeNameID(idx);
if (id >= 0 && (size_t)id < mTree.mNumResIds) {
return dtohl(mTree.mResIds[id]);
}
return 0;
}
int32_t ResXMLParser::getAttributeValueStringID(size_t idx) const
{
if (mEventCode == START_TAG) {
const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
if (idx < dtohs(tag->attributeCount)) {
const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
(((const uint8_t*)tag)
+ dtohs(tag->attributeStart)
+ (dtohs(tag->attributeSize)*idx));
return dtohl(attr->rawValue.index);
}
}
return -1;
}
const uint16_t* ResXMLParser::getAttributeStringValue(size_t idx, size_t* outLen) const
{
int32_t id = getAttributeValueStringID(idx);
//XML_NOISY(printf("getAttributeValue 0x%x=0x%x\n", idx, id));
return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
}
int32_t ResXMLParser::getAttributeDataType(size_t idx) const
{
if (mEventCode == START_TAG) {
const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
if (idx < dtohs(tag->attributeCount)) {
const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
(((const uint8_t*)tag)
+ dtohs(tag->attributeStart)
+ (dtohs(tag->attributeSize)*idx));
return attr->typedValue.dataType;
}
}
return Res_value::TYPE_NULL;
}
int32_t ResXMLParser::getAttributeData(size_t idx) const
{
if (mEventCode == START_TAG) {
const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
if (idx < dtohs(tag->attributeCount)) {
const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
(((const uint8_t*)tag)
+ dtohs(tag->attributeStart)
+ (dtohs(tag->attributeSize)*idx));
return dtohl(attr->typedValue.data);
}
}
return 0;
}