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package thenewpoketext;
/*----------------------------------------------------------------------------*/
/*-- PokeTextData.java - decodes gen4 games text into Unicode --*/
/*-- Code derived from "thenewpoketext", copyright (C) loadingNOW --*/
/*-- Ported to Java and bugfixed/customized by sneed --*/
/*----------------------------------------------------------------------------*/
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
public class PokeTextData {
private byte[] data;
private List<PointerEntry> ptrlist;
public List<String> strlist;
public boolean compressFlag;
public PokeTextData(byte[] data) {
this.data = Arrays.copyOf(data, data.length);
}
public byte[] get() {
return data;
}
private int read16(int ofs) {
return (data[ofs] & 0xFF) | ((data[ofs + 1] & 0xFF) << 8);
}
private void write16(int d, int ofs) {
data[ofs] = (byte) (d & 0xFF);
data[ofs + 1] = (byte) ((d >> 8) & 0xFF);
}
private int read32(int ofs) {
return (data[ofs] & 0xFF) | ((data[ofs + 1] & 0xFF) << 8) | ((data[ofs + 2] & 0xFF) << 16)
| ((data[ofs + 3] & 0xFF) << 24);
}
private void write32(int d, int ofs) {
data[ofs] = (byte) (d & 0xFF);
data[ofs + 1] = (byte) ((d >> 8) & 0xFF);
data[ofs + 2] = (byte) ((d >> 16) & 0xFF);
data[ofs + 3] = (byte) ((d >> 24) & 0xFF);
}
public void decrypt() {
DecyptPtrs(read16(0), read16(2), 4);
this.ptrlist = CreatePtrList(read16(0), 4);
this.strlist = new ArrayList<>();
int num = read16(0);
for (int i = 0; i < num; i++) {
PointerEntry entry = this.ptrlist.get(i);
DecyptTxt(entry.getChars(), i + 1, entry.getPtr());
this.strlist.add(MakeString(entry.getChars(), entry.getPtr()));
}
}
public void encrypt() {
this.ptrlist = CreatePtrList(read16(0), 4);
int num = read16(0);
for (int i = 0; i < num; i++) {
PointerEntry entry = this.ptrlist.get(i);
DecyptTxt(entry.getChars(), i + 1, entry.getPtr());
}
DecyptPtrs(read16(0), read16(2), 4);
}
private void DecyptPtrs(int count, int key, int sdidx) {
key = (key * 0x2FD) & 0xFFFF;
for (int i = 0; i < count; i++) {
int key2 = (key * (i + 1) & 0xFFFF);
int realkey = key2 | (key2 << 16);
write32(read32(sdidx) ^ realkey, sdidx);
write32(read32(sdidx + 4) ^ realkey, sdidx + 4);
sdidx += 8;
}
}
private List<PointerEntry> CreatePtrList(int count, int sdidx) {
List<PointerEntry> ptrlist = new ArrayList<>();
for (int i = 0; i < count; i++) {
ptrlist.add(new PointerEntry(read32(sdidx), read32(sdidx + 4)));
sdidx += 8;
}
return ptrlist;
}
private void DecyptTxt(int count, int id, int idx) {
int key = (0x91BD3 * id) & 0xFFFF;
for (int i = 0; i < count; i++) {
write16(read16(idx) ^ key, idx);
key += 0x493D;
key = key & 0xFFFF;
idx += 2;
}
}
private String MakeString(int count, int idx) {
StringBuilder string = new StringBuilder();
List<Integer> chars = new ArrayList<>();
List<Integer> uncomp = new ArrayList<>();
for (int i = 0; i < count; i++) {
chars.add(read16(idx));
idx += 2;
}
if (chars.get(0) == 0xF100) {
compressFlag = true;
int j = 1;
int shift1 = 0;
int trans = 0;
while (true) {
int tmp = chars.get(j);
tmp = tmp >> shift1;
int tmp1 = tmp;
if (shift1 >= 0xF) {
shift1 -= 0xF;
if (shift1 > 0) {
tmp1 = (trans | ((chars.get(j) << (9 - shift1)) & 0x1FF));
if (tmp1 == 0x1FF) {
break;
}
uncomp.add(tmp1);
}
} else {
tmp1 = ((chars.get(j) >> shift1) & 0x1FF);
if (tmp1 == 0x1FF) {
break;
}
uncomp.add(tmp1);
shift1 += 9;
if (shift1 < 0xF) {
trans = ((chars.get(j) >> shift1) & 0x1FF);
shift1 += 9;
}
j += 1;
}
}
chars = uncomp;
}
int i = 0;
for (int c = 0; c < chars.size(); c++) {
int currChar = chars.get(i);
if (UnicodeParser.tb[currChar] != null) {
string.append(UnicodeParser.tb[currChar]);
} else {
if (currChar == 0xFFFE) {
i++;
string.append("\\v").append(String.format("%04X", chars.get(i)));
i++;
int total = chars.get(i);
if (total == 0) {
string.append("\\x").append(String.format("%04X", 0));
}
for (int z = 0; z < total; z++) {
i++;
string.append("\\z").append(String.format("%04X", chars.get(i)));
}
} else if (currChar == 0xFFFF) {
break;
} else {
string.append("\\x").append(String.format("%04X", chars.get(i)));
}
}
i++;
}
return string.toString();
}
public void SetKey(int key) {
write16(key, 2);
}
public int GetKey() {
return read16(2);
}
public class PointerEntry {
private int ptr;
private int chars;
public PointerEntry(int ptr, int chars) {
this.ptr = ptr;
this.chars = chars;
}
public int getPtr() {
return ptr;
}
public int getChars() {
return chars;
}
}
}
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