mirror of
https://github.com/ultimatepp/ultimatepp.git
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189 lines
8.4 KiB
C++
189 lines
8.4 KiB
C++
class Crc32Stream : public OutStream {
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dword crc;
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virtual void Out(const void *data, dword size);
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public:
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dword Finish() { Flush(); return crc; }
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operator dword() { return Finish(); }
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void Clear();
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Crc32Stream() { Clear(); }
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};
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dword CRC32(const void *ptr, dword count);
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dword CRC32(const String& s);
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class Zlib {
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enum { NONE, DEFLATE, INFLATE };
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z_stream z;
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Buffer<Bytef> output;
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int chunk;
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int mode;
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dword crc;
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int total;
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int compression_level;
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bool docrc;
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bool hdr;
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bool error;
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bool gzip;
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bool gzip_header_done;
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bool gzip_footer;
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String footer;
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String gzip_hs;
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String gzip_name;
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String gzip_comment;
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String out;
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void PutOut(const void *ptr, int size);
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void Pump(bool finish);
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void Begin();
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void Free();
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void Put0(const char *ptr, int size);
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int GzipHeader(const char *ptr, int size);
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void Init();
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public:
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Event<const void *, int> WhenOut;
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void Compress();
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void Decompress();
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void Put(const void *ptr, int size);
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void Put(const String& s) { Put(~s, s.GetCount()); }
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void End();
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void Clear();
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const String& Get() const { return out; }
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operator const String&() const { return out; }
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const String& operator~() const { return out; }
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void ClearOut() { out.Clear(); }
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dword GetCRC() const { return crc; }
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bool IsError() const { return error; }
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String GetGZipName() const { return gzip_name; }
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String GetGZipComment() const { return gzip_comment; }
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Zlib& GZip(bool gzip_ = true) { gzip = gzip_; return *this; }
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Zlib& Header(bool hdr_ = true) { hdr = hdr_; return *this; }
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Zlib& NoHeader() { return Header(false); }
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Zlib& CRC(bool b = true) { docrc = b; return *this; }
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Zlib& NoCRC() { return CRC(false); }
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Zlib& ChunkSize(int n);
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Zlib& Level(int compression_lvl) { compression_level = compression_lvl; return *this; }
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Zlib();
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~Zlib();
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};
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class ZCompressStream : public OutFilterStream {
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Zlib z;
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public:
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void Open(Stream& out) { z.Compress(); Set(out, z); }
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dword GetCRC() const { return z.GetCRC(); }
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Zlib& GZip(bool gzip_ = true) { return z.GZip(); }
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Zlib& Header(bool hdr_ = true) { return z.Header(); }
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Zlib& NoHeader() { return Header(false); }
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Zlib& CRC(bool b = true) { return z.CRC(); }
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Zlib& NoCRC() { return CRC(false); }
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Zlib& ChunkSize(int n) { return z.ChunkSize(n); }
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Zlib& Level(int compression_lvl) { return z.Level(compression_lvl); }
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ZCompressStream() {}
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ZCompressStream(Stream& out) { Open(out); }
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~ZCompressStream() { Close(); }
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};
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class ZDecompressStream : public InFilterStream {
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Zlib z;
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public:
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void Open(Stream& in) { z.Decompress(); Set(in, z); }
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dword GetCRC() const { return z.GetCRC(); }
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String GetGZipName() const { return z.GetGZipName(); }
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String GetGZipComment() const { return z.GetGZipComment(); }
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Zlib& GZip(bool gzip_ = true) { return z.GZip(); }
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Zlib& Header(bool hdr_ = true) { return z.Header(); }
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Zlib& NoHeader() { return Header(false); }
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Zlib& CRC(bool b = true) { return z.CRC(); }
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Zlib& NoCRC() { return CRC(false); }
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Zlib& ChunkSize(int n) { return z.ChunkSize(n); }
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Zlib& Level(int compression_lvl) { return z.Level(compression_lvl); }
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ZDecompressStream() {}
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ZDecompressStream(Stream& out) { Open(out); }
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~ZDecompressStream() { Close(); }
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};
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int64 CopyStream(Stream& dest, Stream& src, int64 count, Gate<int64, int64> progress);
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int64 ZCompress(Stream& out, Stream& in, int64 size, Gate<int64, int64> progress = Null, bool hdr = true);
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int64 ZCompress(Stream& out, Stream& in, Gate<int64, int64> progress = Null);
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String ZCompress(const void *data, int64 len, Gate<int64, int64> progress = Null);
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String ZCompress(const String& s, Gate<int64, int64> progress = Null);
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int64 ZDecompress(Stream& out, Stream& in, int64 size, Gate<int64, int64> progress = Null, bool hdr = true);
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int64 ZDecompress(Stream& out, Stream& in, Gate<int64, int64> progress = Null);
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String ZDecompress(const void *data, int64 len, Gate<int64, int64> progress = Null);
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String ZDecompress(const String& s, Gate<int64, int64> progress = Null);
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int64 GZCompress(Stream& out, Stream& in, int64 size, Gate<int64, int64> progress = Null);
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int64 GZCompress(Stream& out, Stream& in, Gate<int64, int64> progress = Null);
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String GZCompress(const void *data, int len, Gate<int64, int64> progress = Null);
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String GZCompress(const String& s, Gate<int64, int64> progress = Null);
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int64 GZDecompress(Stream& out, Stream& in, int64 size, Gate<int64, int64> progress = Null);
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int64 GZDecompress(Stream& out, Stream& in, Gate<int64, int64> progress = Null);
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String GZDecompress(const void *data, int len, Gate<int64, int64> progress = Null);
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String GZDecompress(const String& s, Gate<int64, int64> progress = Null);
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bool GZCompressFile(const char *dstfile, const char *srcfile, Gate<int64, int64> progress = Null);
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bool GZCompressFile(const char *srcfile, Gate<int64, int64> progress = Null);
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bool GZDecompressFile(const char *dstfile, const char *srcfile, Gate<int64, int64> progress = Null);
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bool GZDecompressFile(const char *srcfile, Gate<int64, int64> progress = Null);
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inline
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bool GZCompressFile(const String& dstfile, const String& srcfile, Gate<int64, int64> progress = Null)
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{ return GZCompressFile(~dstfile, ~srcfile, progress); }
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inline
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bool GZCompressFile(const String& srcfile, Gate<int64, int64> progress = Null)
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{ return GZCompressFile(~srcfile, progress); }
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inline
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bool GZDecompressFile(const String& dstfile, const String& srcfile, Gate<int64, int64> progress = Null)
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{ return GZDecompressFile(~dstfile, ~srcfile, progress); }
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inline
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bool GZDecompressFile(const String& srcfile, Gate<int64, int64> progress = Null)
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{ return GZDecompressFile(~srcfile, progress); }
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/// Backward compatibility:
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Gate<int64, int64> AsGate64(Gate<int, int> gate);
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inline int ZCompress(Stream& out, Stream& in, Gate2<int, int> progress) { return (int)ZCompress(out, in, AsGate64(progress)); }
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inline String ZCompress(const void *data, int len, Gate2<int, int> progress) { return ZCompress(data, len, AsGate64(progress)); }
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inline String ZCompress(const String& s, Gate2<int, int> progress) { return ZCompress(s, AsGate64(progress)); }
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inline int ZDecompress(Stream& out, Stream& in, Gate2<int, int> progress) { return (int)ZDecompress(out, in, AsGate64(progress)); }
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inline String ZDecompress(const String& s, Gate2<int, int> progress) { return ZDecompress(s, AsGate64(progress)); }
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inline String ZDecompress(const void *data, int len, Gate2<int, int> progress) { return ZDecompress(data, len, AsGate64(progress)); }
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inline int GZCompress(Stream& out, Stream& in, int size, Gate2<int, int> progress) { return (int)GZCompress(out, in, size, AsGate64(progress)); }
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inline int GZCompress(Stream& out, Stream& in, Gate2<int, int> progress) { return (int)GZCompress(out, in, AsGate64(progress)); }
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inline String GZCompress(const void *data, int len, Gate2<int, int> progress) { return GZCompress(data, len, AsGate64(progress)); }
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inline String GZCompress(const String& s, Gate2<int, int> progress) { return GZCompress(s, AsGate64(progress)); }
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inline int GZDecompress(Stream& out, Stream& in, int size, Gate2<int, int> progress) { return (int)GZDecompress(out, in, size, AsGate64(progress)); }
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inline int GZDecompress(Stream& out, Stream& in, Gate2<int, int> progress) { return (int)GZDecompress(out, in, AsGate64(progress)); }
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inline String GZDecompress(const void *data, int len, Gate2<int, int> progress) { return GZDecompress(data, len, AsGate64(progress)); }
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inline String GZDecompress(const String& s, Gate2<int, int> progress) { return GZDecompress(s, AsGate64(progress)); }
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String FastCompress(const void *s, int sz);
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String FastCompress(const String& s);
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String FastDecompress(const String& data);
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