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68 lines
1.8 KiB
Plaintext
68 lines
1.8 KiB
Plaintext
//========================================================================
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//
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// FlateEncoder.h
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//
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// Copyright (C) 2016, William Bader <williambader@hotmail.com>
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// Copyright (C) 2018, 2019, 2021 Albert Astals Cid <aacid@kde.org>
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//
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// This file is under the GPLv2 or later license
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//
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//========================================================================
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#ifndef FLATEENCODE_H
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#define FLATEENCODE_H
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#include "poppler-config.h"
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#include <cstdio>
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#include <cstdlib>
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#include <cstddef>
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#include <cstring>
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#include <cctype>
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#include "goo/gmem.h"
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#include "goo/gfile.h"
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#include "Error.h"
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#include "Object.h"
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#include "Decrypt.h"
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#include "Stream.h"
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extern "C" {
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#include <zlib.h>
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}
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//------------------------------------------------------------------------
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// FlateEncoder
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//------------------------------------------------------------------------
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class FlateEncoder : public FilterStream
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{
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public:
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explicit FlateEncoder(Stream *strA);
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~FlateEncoder() override;
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StreamKind getKind() const override { return strWeird; }
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void reset() override;
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int getChar() override { return (outBufPtr >= outBufEnd && !fillBuf()) ? EOF : (*outBufPtr++ & 0xff); }
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int lookChar() override { return (outBufPtr >= outBufEnd && !fillBuf()) ? EOF : (*outBufPtr & 0xff); }
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GooString *getPSFilter(int psLevel, const char *indent) override { return nullptr; }
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bool isBinary(bool last = true) const override { return true; }
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bool isEncoder() const override { return true; }
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private:
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static const int inBufSize = 16384;
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static const int outBufSize = inBufSize;
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unsigned char inBuf[inBufSize];
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unsigned char outBuf[outBufSize];
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unsigned char *outBufPtr;
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unsigned char *outBufEnd;
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bool inBufEof;
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bool outBufEof;
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z_stream zlib_stream;
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bool fillBuf();
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};
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#endif
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