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