mirror of
https://github.com/git/git.git
synced 2024-11-14 21:23:03 +01:00
1c4b660412
CodingGuidelines states that the first #include in C files should be git-compat-util.h or another header file that includes it, such as cache.h or builtin.h. Signed-off-by: David Aguilar <davvid@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
30 lines
660 B
C
30 lines
660 B
C
#include "git-compat-util.h"
|
|
#include "varint.h"
|
|
|
|
uintmax_t decode_varint(const unsigned char **bufp)
|
|
{
|
|
const unsigned char *buf = *bufp;
|
|
unsigned char c = *buf++;
|
|
uintmax_t val = c & 127;
|
|
while (c & 128) {
|
|
val += 1;
|
|
if (!val || MSB(val, 7))
|
|
return 0; /* overflow */
|
|
c = *buf++;
|
|
val = (val << 7) + (c & 127);
|
|
}
|
|
*bufp = buf;
|
|
return val;
|
|
}
|
|
|
|
int encode_varint(uintmax_t value, unsigned char *buf)
|
|
{
|
|
unsigned char varint[16];
|
|
unsigned pos = sizeof(varint) - 1;
|
|
varint[pos] = value & 127;
|
|
while (value >>= 7)
|
|
varint[--pos] = 128 | (--value & 127);
|
|
if (buf)
|
|
memcpy(buf, varint + pos, sizeof(varint) - pos);
|
|
return sizeof(varint) - pos;
|
|
}
|