private byte[] GetData(PackedResourceInfo tocEntry)
{
string unpackingError;
byte[] result;
if (!_loader.GetData(tocEntry, out result, out unpackingError))
{
throw MakeError(unpackingError);
}
return(result);
}
public bool GetData(PackedResourceInfo tocEntry, out byte[] result, out string unpackingError)
{
unpackingError = null;
result = null;
var fileOffset = tocEntry.FileOffset;
var dataSize = tocEntry.DataSize;
var compress = tocEntry.Compress;
try {
var stream = GetZipArchive();
if (stream == null)
{
unpackingError = "Resource not found.";
return(false);
}
using (var reader = new BinaryReader(stream)) {
// Check to make sure the local file header is correct
reader.BaseStream.Seek(fileOffset, SeekOrigin.Begin);
var l = reader.ReadInt32();
if (l != 0x04034B50)
{
// Bad: Local File Header
unpackingError = "Bad local file header in ZIP resource.";
return(false);
}
reader.BaseStream.Seek(fileOffset + 26, SeekOrigin.Begin);
l = 30 + reader.ReadInt16() + reader.ReadInt16(); // local header size
fileOffset += l; // start of file data
reader.BaseStream.Seek(fileOffset, SeekOrigin.Begin);
byte[] rawData;
try {
rawData = reader.ReadBytes(compress == 0 ? dataSize : dataSize + 1);
}
catch {
unpackingError = "Can't read data";
return(false);
}
if (compress != 0)
{
rawData[dataSize] = (byte)'Z';
}
result = compress == 0 ? rawData : ZlibModule.Decompress(rawData, -15);
return(true);
}
}
catch (Exception exception) {
unpackingError = String.Format("{0}: {1}", exception.GetType().Name, exception.Message);
return(false);
}
}
private static IEnumerable <PackedResourceInfo> ReadZipDirectory(BinaryReader reader, int headerOffset,
int arcoffset)
{
while (true)
{
var name = string.Empty;
reader.BaseStream.Seek(headerOffset, SeekOrigin.Begin); // Start of file header
int l = reader.ReadInt32();
if (l != 0x02014B50)
{
break; // Bad: Central Dir File Header
}
reader.BaseStream.Seek(headerOffset + 10, SeekOrigin.Begin);
var compress = reader.ReadInt16();
/*var time =*/
reader.ReadInt16();
/*var date =*/
reader.ReadInt16();
/*var crc =*/
reader.ReadInt32();
var dataSize = reader.ReadInt32();
var fileSize = reader.ReadInt32();
var nameSize = reader.ReadInt16();
var headerSize = 46 + nameSize +
reader.ReadInt16() +
reader.ReadInt16();
reader.BaseStream.Seek(headerOffset + 42, SeekOrigin.Begin);
var fileOffset = reader.ReadInt32() + arcoffset;
if (nameSize > MaxPathLen)
{
nameSize = MaxPathLen;
}
for (int i = 0; i < nameSize; i++)
{
char c = reader.ReadChar();
if (c == '/')
{
c = Path.DirectorySeparatorChar;
}
name += c;
}
headerOffset += headerSize;
yield return
(PackedResourceInfo.Create(name, compress, dataSize, fileSize, fileOffset));
}
}
private byte[] GetCodeFromData(CodeContext /*!*/ context, bool isbytecode, PackedResourceInfo tocEntry)
{
byte[] data = GetData(tocEntry);
byte[] code = null;
if (data != null)
{
if (isbytecode)
{
// would put in code to unmarshal the bytecode here...
}
else
{
code = data;
}
}
return(code);
}
private string GetCodeFromData(CodeContext /*!*/ context, bool isbytecode, PackedResourceInfo tocEntry)
{
byte[] data = GetData(tocEntry);
string code = null;
if (data != null)
{
if (isbytecode)
{
// would put in code to unmarshal the bytecode here...
}
else
{
code = context.LanguageContext.DefaultEncoding.GetString(data, 0, data.Length);
}
}
return(code);
}
public bool GetData(PackedResourceInfo tocEntry, out byte[] result, out string unpackingError) {
unpackingError = null;
result = null;
var fileOffset = tocEntry.FileOffset;
var dataSize = tocEntry.DataSize;
var compress = tocEntry.Compress;
try {
var stream = GetZipArchive();
if (stream == null) {
unpackingError = "Resource not found.";
return false;
}
using (var reader = new BinaryReader(stream)) {
// Check to make sure the local file header is correct
reader.BaseStream.Seek(fileOffset, SeekOrigin.Begin);
var l = reader.ReadInt32();
if (l != 0x04034B50) {
// Bad: Local File Header
unpackingError = "Bad local file header in ZIP resource.";
return false;
}
reader.BaseStream.Seek(fileOffset + 26, SeekOrigin.Begin);
l = 30 + reader.ReadInt16() + reader.ReadInt16(); // local header size
fileOffset += l; // start of file data
reader.BaseStream.Seek(fileOffset, SeekOrigin.Begin);
byte[] rawData;
try {
rawData = reader.ReadBytes(compress == 0 ? dataSize : dataSize + 1);
}
catch {
unpackingError = "Can't read data";
return false;
}
if (compress != 0) {
rawData[dataSize] = (byte) 'Z';
}
result = compress == 0 ? rawData : ZlibModule.Decompress(rawData, -15);
return true;
}
}
catch (Exception exception) {
unpackingError = String.Format("{0}: {1}", exception.GetType().Name, exception.Message);
return false;
}
}
private byte[] GetData(PackedResourceInfo tocEntry) {
string unpackingError;
byte[] result;
if (!_loader.GetData(tocEntry, out result, out unpackingError))
throw MakeError(unpackingError);
return result;
}
private string GetCodeFromData(CodeContext /*!*/ context, bool isbytecode, PackedResourceInfo tocEntry) {
byte[] data = GetData(tocEntry);
string code = null;
if (data != null) {
if (isbytecode) {
// would put in code to unmarshal the bytecode here...
}
else {
code = context.LanguageContext.DefaultEncoding.GetString(data, 0, data.Length);
}
}
return code;
}
