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31 May 2024, 23:06:24 UTC
Revision 42b5c78845feb44f1d36eecad4c72336d5c2a9c5 authored by Junio C Hamano on 15 April 2006, 06:21:34 UTC, committed by Junio C Hamano on 15 April 2006, 06:21:34 UTC 
GIT v1.3.0-rc4
 
I've merged everything I think is ready for 1.3.0, so this is
the final round -- hopefully I can release this with minimum
last-minute fixup as v1.3.0 early next week.

Signed-off-by: Junio C Hamano <junkio@cox.net>
1 parent 170abc8
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Tip revision: 42b5c78845feb44f1d36eecad4c72336d5c2a9c5 authored by Junio C Hamano on 15 April 2006, 06:21:34 UTC
GIT v1.3.0-rc4
Tip revision: 42b5c78
delta.h 
#ifndef DELTA_H
#define DELTA_H

/* handling of delta buffers */
extern void *diff_delta(void *from_buf, unsigned long from_size,
			void *to_buf, unsigned long to_size,
		        unsigned long *delta_size, unsigned long max_size);
extern void *patch_delta(void *src_buf, unsigned long src_size,
			 void *delta_buf, unsigned long delta_size,
			 unsigned long *dst_size);

/* the smallest possible delta size is 4 bytes */
#define DELTA_SIZE_MIN	4

/*
 * This must be called twice on the delta data buffer, first to get the
 * expected reference buffer size, and again to get the result buffer size.
 */
static inline unsigned long get_delta_hdr_size(const unsigned char **datap,
					       const unsigned char *top)
{
	const unsigned char *data = *datap;
	unsigned char cmd;
	unsigned long size = 0;
	int i = 0;
	do {
		cmd = *data++;
		size |= (cmd & ~0x80) << i;
		i += 7;
	} while (cmd & 0x80 && data < top);
	*datap = data;
	return size;
}

#endif
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