The Tor Browser: modules/libjar/zipwriter/src/StreamFunctions.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 _nsStreamFunctions_h_

     7 #define _nsStreamFunctions_h_

     9 #include "nscore.h"

    10 #include "nsIInputStream.h"

    11 #include "nsIOutputStream.h"

    13 /*

    14  * ZIP file data is stored little-endian. These are helper functions to read and

    15  * write little endian data to/from a char buffer.

    16  * The off argument, where present, is incremented according to the number of

    17  * bytes consumed from the buffer.

    18  */

    19 inline NS_HIDDEN_(void) WRITE8(uint8_t* buf, uint32_t* off, uint8_t val)

    20 {

    21   buf[(*off)++] = val;

    22 }

    24 inline NS_HIDDEN_(void) WRITE16(uint8_t* buf, uint32_t* off, uint16_t val)

    25 {

    26   WRITE8(buf, off, val & 0xff);

    27   WRITE8(buf, off, (val >> 8) & 0xff);

    28 }

    30 inline NS_HIDDEN_(void) WRITE32(uint8_t* buf, uint32_t* off, uint32_t val)

    31 {

    32   WRITE16(buf, off, val & 0xffff);

    33   WRITE16(buf, off, (val >> 16) & 0xffff);

    34 }

    36 inline NS_HIDDEN_(uint8_t) READ8(const uint8_t* buf, uint32_t* off)

    37 {

    38   return buf[(*off)++];

    39 }

    41 inline NS_HIDDEN_(uint16_t) READ16(const uint8_t* buf, uint32_t* off)

    42 {

    43   uint16_t val = READ8(buf, off);

    44   val |= READ8(buf, off) << 8;

    45   return val;

    46 }

    48 inline NS_HIDDEN_(uint32_t) READ32(const uint8_t* buf, uint32_t* off)

    49 {

    50   uint32_t val = READ16(buf, off);

    51   val |= READ16(buf, off) << 16;

    52   return val;

    53 }

    55 inline NS_HIDDEN_(uint32_t) PEEK32(const uint8_t* buf)

    56 {

    57   return (uint32_t)( (buf [0]      ) |

    58                      (buf [1] <<  8) |

    59                      (buf [2] << 16) |

    60                      (buf [3] << 24) );

    61 }

    63 NS_HIDDEN_(nsresult) ZW_ReadData(nsIInputStream *aStream, char *aBuffer, uint32_t aCount);

    65 NS_HIDDEN_(nsresult) ZW_WriteData(nsIOutputStream *aStream, const char *aBuffer,

    66                       uint32_t aCount);

    68 #endif

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