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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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68
modules/libjar/zipwriter/StreamFunctions.h Normal file
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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#ifndef _nsStreamFunctions_h_
#define _nsStreamFunctions_h_
#include "nscore.h"
#include "nsIInputStream.h"
#include "nsIOutputStream.h"
/*
* ZIP file data is stored little-endian. These are helper functions to read and
* write little endian data to/from a char buffer.
* The off argument, where present, is incremented according to the number of
* bytes consumed from the buffer.
*/
inline void WRITE8(uint8_t* buf, uint32_t* off, uint8_t val)
{
buf[(*off)++] = val;
}
inline void WRITE16(uint8_t* buf, uint32_t* off, uint16_t val)
{
WRITE8(buf, off, val & 0xff);
WRITE8(buf, off, (val >> 8) & 0xff);
}
inline void WRITE32(uint8_t* buf, uint32_t* off, uint32_t val)
{
WRITE16(buf, off, val & 0xffff);
WRITE16(buf, off, (val >> 16) & 0xffff);
}
inline uint8_t READ8(const uint8_t* buf, uint32_t* off)
{
return buf[(*off)++];
}
inline uint16_t READ16(const uint8_t* buf, uint32_t* off)
{
uint16_t val = READ8(buf, off);
val |= READ8(buf, off) << 8;
return val;
}
inline uint32_t READ32(const uint8_t* buf, uint32_t* off)
{
uint32_t val = READ16(buf, off);
val |= READ16(buf, off) << 16;
return val;
}
inline uint32_t PEEK32(const uint8_t* buf)
{
return (uint32_t)( (buf [0] ) |
(buf [1] << 8) |
(buf [2] << 16) |
(buf [3] << 24) );
}
nsresult ZW_ReadData(nsIInputStream *aStream, char *aBuffer, uint32_t aCount);
nsresult ZW_WriteData(nsIOutputStream *aStream, const char *aBuffer,
uint32_t aCount);
#endif