The Tor Browser: modules/libjar/zipwriter/src/nsDeflateConverter.h@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* This Source Code Form is subject to the terms of the Mozilla Public

     2  * License, v. 2.0. If a copy of the MPL was not distributed with this

     3  * file, You can obtain one at http://mozilla.org/MPL/2.0/.

     4  */

     6 #ifndef _nsDeflateConverter_h_

     7 #define _nsDeflateConverter_h_

     9 #include "nsIStreamConverter.h"

    10 #include "nsCOMPtr.h"

    11 #include "nsIPipe.h"

    12 #include "zlib.h"

    13 #include "mozilla/Attributes.h"

    15 #define DEFLATECONVERTER_CID { 0x461cd5dd, 0x73c6, 0x47a4, \

    16            { 0x8c, 0xc3, 0x60, 0x3b, 0x37, 0xd8, 0x4a, 0x61 } }

    18 #define ZIP_BUFLEN (4 * 1024 - 1)

    20 class nsDeflateConverter MOZ_FINAL : public nsIStreamConverter

    21 {

    22 public:

    23     NS_DECL_ISUPPORTS

    24     NS_DECL_NSIREQUESTOBSERVER

    25     NS_DECL_NSISTREAMLISTENER

    26     NS_DECL_NSISTREAMCONVERTER

    28     nsDeflateConverter()

    29     {

    30         // 6 is Z_DEFAULT_COMPRESSION but we need the actual value

    31         mLevel = 6;

    32     }

    34     nsDeflateConverter(int32_t level)

    35     {

    36         mLevel = level;

    37     }

    39 private:

    41     ~nsDeflateConverter()

    42     {

    43     }

    45     enum WrapMode {

    46         WRAP_ZLIB,

    47         WRAP_GZIP,

    48         WRAP_NONE

    49     };

    51     WrapMode mWrapMode;

    52     uint64_t mOffset;

    53     int32_t mLevel;

    54     nsCOMPtr<nsIStreamListener> mListener;

    55     nsCOMPtr<nsISupports> mContext;

    56     z_stream mZstream;

    57     unsigned char mWriteBuffer[ZIP_BUFLEN];

    59     nsresult Init();

    60     nsresult PushAvailableData(nsIRequest *aRequest, nsISupports *aContext);

    61 };

    63 #endif

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