/**
* read String pool, for apk binary xml file and resource table.
*
* @param in
* @param stringPoolHeader
* @return
* @throws IOException
*/
public static StringPool readStringPool(TellableInputStream in, StringPoolHeader stringPoolHeader)
throws IOException {
long beginPos = in.tell();
long[] offsets = new long[(int) stringPoolHeader.stringCount];
// read strings offset
if (stringPoolHeader.stringCount > 0) {
for (int idx = 0; idx < stringPoolHeader.stringCount; idx++) {
offsets[idx] = in.readUInt();
}
}
// read flag
boolean sorted = (stringPoolHeader.flags & StringPoolHeader.SORTED_FLAG) != 0;
StringEncoding stringEncoding =
(stringPoolHeader.flags & StringPoolHeader.UTF8_FLAG) != 0
? StringEncoding.UTF8
: StringEncoding.UTF16;
// read strings. the head and metas have 28 bytes
long stringPos = beginPos + stringPoolHeader.stringsStart - stringPoolHeader.headerSize;
in.advanceIfNotRearch(stringPos);
StringPoolEntry[] entries = new StringPoolEntry[offsets.length];
for (int i = 0; i < offsets.length; i++) {
entries[i] = new StringPoolEntry(i, stringPos + offsets[i]);
}
Arrays.sort(entries);
String lastStr = null;
long lastOffset = -1;
StringPool stringPool = new StringPool((int) stringPoolHeader.stringCount);
for (StringPoolEntry entry : entries) {
if (entry.getOffset() == lastOffset) {
stringPool.set(entry.getIdx(), lastStr);
continue;
}
in.advanceIfNotRearch(entry.getOffset());
lastOffset = entry.getOffset();
String str = ParseUtils.readString(in, stringEncoding);
lastStr = str;
stringPool.set(entry.getIdx(), str);
}
// read styles
if (stringPoolHeader.styleCount > 0) {
// now we just skip it
}
in.advanceIfNotRearch(beginPos + stringPoolHeader.chunkSize - stringPoolHeader.headerSize);
return stringPool;
}
