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initial XDR primitives
This commit is contained in:
shaver%netscape.com
parent
6b86046524
commit
73c8b0241d
115
xpcom/libxpt/public/xpt_xdr.h
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115
xpcom/libxpt/public/xpt_xdr.h
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@ -0,0 +1,115 @@
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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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/*
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* Basic APIs for streaming typelib structures to/from disk.
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*/
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#ifndef __xpt_xdr_h__
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#define __xpt_xdr_h__
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#include "xpt_struct.h"
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#include "prosdep.h"
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#include "plhash.h"
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typedef struct XPTXDRState XPTXDRState;
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typedef struct XPTXDRDatapool XPTXDRDatapool;
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PRBool
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XPT_DoString(XPTXDRState *state, XPTString **strp);
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PRBool
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XPT_DoIdentifier(XPTState *state, XPTIdentifier *identp);
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PRBool
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XPT_Do32(XPTXDRState *state, uint32 *u32p);
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PRBool
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XPT_Do16(XPTXDRState *state, uint16 *u16p);
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PRBool
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XPT_Do8(XPTXDRState *state, uint8 *u8p);
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/*
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* When working with bitfields, use the Do7-Do1 calls with a uint8.
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* Only the appropriate number of bits are manipulated, and when in decode
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* mode, the rest are zeroed. When you're done sending bits along, use
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* XPT_FlushBits to make sure that you don't eat a leading bit from the
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* next structure. (You should probably be writing full bytes' worth of bits
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* anyway, and zeroing out the bits you don't use, but just to be sure...
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*/
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PRBool
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XPT_DoBits(XPTXDRState *state, uint8 *u8p, uintN nbits);
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PRBool
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XPT_Do6(XPTXDRState *state, uint8 *u6p);
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PRBool
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XPT_Do5(XPTXDRState *state, uint8 *u5p);
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PRBool
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XPT_Do4(XPTXDRState *state, uint8 *u4p);
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PRBool
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XPT_Do3(XPTXDRState *state, uint8 *u3p);
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PRBool
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XPT_Do2(XPTXDRState *state, uint8 *u2p);
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PRBool
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XPT_Do1(XPTXDRState *state, uint8 *u1p);
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/* returns the number of bits skipped, which should be 0-7 */
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int
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XPT_FlushBits(XPTXDRState *state);
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typedef enum {
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XPTXDR_ENCODE,
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XPTXDR_DECODE
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} XPTXDRMode;
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struct XPTXDRState {
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XPTXDRMode mode;
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XPTXDRDatapool *pool;
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};
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struct XPTXDRDatapool {
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PLHash *offset_map;
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void *data;
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uint32 point;
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uint8 bits;
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uint32 allocated;
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};
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/* all data structures are big-endian */
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#if defined IS_BIG_ENDIAN
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# define XPTXDR_SWAB32(x) x
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# define XPTXDR_SWAB16(x) x
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#elif defined IS_LITTLE_ENDIAN
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# define XPTXDR_SWAB32(x) (((x) >> 24) | \
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(((x) >> 8) & 0xff00) | \
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(((x) << 8) & 0xff0000) | \
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((x) << 24))
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# define XPTXDR_SWAB16(x) (((x) >> 8) | ((x) << 8))
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#else
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# error "unknown byte order"
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#endif
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#endif /* __xpt_xdr_h__ */
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115
xpcom/typelib/xpt/public/xpt_xdr.h
Normal file
115
xpcom/typelib/xpt/public/xpt_xdr.h
Normal file
@ -0,0 +1,115 @@
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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* The contents of this file are subject to the Netscape Public License
|
||||
* Version 1.0 (the "NPL"); you may not use this file except in
|
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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/*
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* Basic APIs for streaming typelib structures to/from disk.
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*/
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#ifndef __xpt_xdr_h__
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#define __xpt_xdr_h__
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#include "xpt_struct.h"
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#include "prosdep.h"
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#include "plhash.h"
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typedef struct XPTXDRState XPTXDRState;
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typedef struct XPTXDRDatapool XPTXDRDatapool;
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PRBool
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XPT_DoString(XPTXDRState *state, XPTString **strp);
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PRBool
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XPT_DoIdentifier(XPTState *state, XPTIdentifier *identp);
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PRBool
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XPT_Do32(XPTXDRState *state, uint32 *u32p);
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PRBool
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XPT_Do16(XPTXDRState *state, uint16 *u16p);
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PRBool
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XPT_Do8(XPTXDRState *state, uint8 *u8p);
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/*
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* When working with bitfields, use the Do7-Do1 calls with a uint8.
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* Only the appropriate number of bits are manipulated, and when in decode
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* mode, the rest are zeroed. When you're done sending bits along, use
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* XPT_FlushBits to make sure that you don't eat a leading bit from the
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* next structure. (You should probably be writing full bytes' worth of bits
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* anyway, and zeroing out the bits you don't use, but just to be sure...
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*/
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PRBool
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XPT_DoBits(XPTXDRState *state, uint8 *u8p, uintN nbits);
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PRBool
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XPT_Do6(XPTXDRState *state, uint8 *u6p);
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PRBool
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XPT_Do5(XPTXDRState *state, uint8 *u5p);
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PRBool
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XPT_Do4(XPTXDRState *state, uint8 *u4p);
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PRBool
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XPT_Do3(XPTXDRState *state, uint8 *u3p);
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PRBool
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XPT_Do2(XPTXDRState *state, uint8 *u2p);
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PRBool
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XPT_Do1(XPTXDRState *state, uint8 *u1p);
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/* returns the number of bits skipped, which should be 0-7 */
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int
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XPT_FlushBits(XPTXDRState *state);
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typedef enum {
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XPTXDR_ENCODE,
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XPTXDR_DECODE
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} XPTXDRMode;
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struct XPTXDRState {
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XPTXDRMode mode;
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XPTXDRDatapool *pool;
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};
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struct XPTXDRDatapool {
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PLHash *offset_map;
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void *data;
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uint32 point;
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uint8 bits;
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uint32 allocated;
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};
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/* all data structures are big-endian */
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#if defined IS_BIG_ENDIAN
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# define XPTXDR_SWAB32(x) x
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# define XPTXDR_SWAB16(x) x
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#elif defined IS_LITTLE_ENDIAN
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# define XPTXDR_SWAB32(x) (((x) >> 24) | \
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(((x) >> 8) & 0xff00) | \
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(((x) << 8) & 0xff0000) | \
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((x) << 24))
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# define XPTXDR_SWAB16(x) (((x) >> 8) | ((x) << 8))
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#else
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# error "unknown byte order"
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#endif
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#endif /* __xpt_xdr_h__ */
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