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msgb: Buffer formatting and scanning functions.

This commit is contained in:
Ingo Albrecht 2010-03-07 18:03:41 +01:00 committed by Harald Welte
parent 622b718195
commit 48e17f8951
1 changed files with 41 additions and 0 deletions
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41
include/osmocore/msgb.h
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@ -98,6 +98,47 @@ static inline unsigned char *msgb_put(struct msgb *msgb, unsigned int len)
msgb->len += len;
return tmp;
}
static inline void msgb_put_u8(struct msgb *msgb, uint8_t word)
{
uint8_t *space = msgb_put(msgb, 1);
space[0] = word & 0xFF;
}
static inline void msgb_put_u16(struct msgb *msgb, uint16_t word)
{
uint8_t *space = msgb_put(msgb, 2);
space[0] = word >> 8 & 0xFF;
space[1] = word & 0xFF;
}
static inline void msgb_put_u32(struct msgb *msgb, uint32_t word)
{
uint8_t *space = msgb_put(msgb, 4);
space[0] = word >> 24 & 0xFF;
space[1] = word >> 16 & 0xFF;
space[2] = word >> 8 & 0xFF;
space[3] = word & 0xFF;
}
static inline unsigned char *msgb_get(struct msgb *msgb, unsigned int len)
{
unsigned char *tmp = msgb->data;
msgb->data += len;
msgb->len -= len;
return tmp;
}
static inline uint8_t msgb_get_u8(struct msgb *msgb)
{
uint8_t *space = msgb_get(msgb, 1);
return space[0];
}
static inline uint16_t msgb_get_u16(struct msgb *msgb)
{
uint8_t *space = msgb_get(msgb, 2);
return space[0] << 8 | space[1];
}
static inline uint32_t msgb_get_u32(struct msgb *msgb)
{
uint8_t *space = msgb_get(msgb, 4);
return space[0] << 24 | space[1] << 16 | space[2] << 8 | space[3];
}
static inline unsigned char *msgb_push(struct msgb *msgb, unsigned int len)
{
msgb->data -= len;