rshen/c-capnproto
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Add capn_init_(fp|mem) to read a stream from file/memory

Browse source 
Packed form still to be tested
This commit is contained in:
James McKaskill 2013-05-07 22:48:46 -04:00
parent b8da11676a
commit 3f29732c69
4 changed files with 224 additions and 26 deletions
Download patch file Download diff file Expand all files Collapse all files

22
capn.h
View file

@ -4,6 +4,7 @@
#define CAPN_H
#include <stdint.h>
#include <stdio.h>
#ifdef __cplusplus
extern "C" {
@ -207,6 +208,12 @@ CAPN_INLINE int capn_write64(capn_ptr p, int off, uint64_t val);
void capn_init_malloc(struct capn *c);
void capn_free_malloc(struct capn *c);
int capn_init_fp(struct capn *c, FILE *f, int packed);
void capn_free_fp(struct capn *c);
int capn_init_mem(struct capn *c, const uint8_t *p, size_t sz, int packed);
void capn_free_mem(struct capn *c);
/* capn_stream encapsulates the needed fields for capn_(deflate|inflate) in a
* similar manner to z_stream from zlib
*
@ -216,27 +223,28 @@ void capn_free_malloc(struct capn *c);
* Other fields should be zero initialized.
*/
struct capn_stream {
uint8_t *next_in;
const uint8_t *next_in;
int avail_in;
uint8_t *next_out;
int avail_out;
int zeros, raw;
};
#define CAPN_NEED_MORE_IN -1
#define CAPN_NEED_MORE_OUT -2
#define CAPN_MISALIGNED -1
#define CAPN_NEED_MORE -2
/* capn_deflate deflates a stream to the packed format
* capn_inflate inflates a stream from the packed format
*
* They will return CAPN_NEED_MORE_(IN|OUT) as appropriate or 0 if the entire
* input has been processed.
* Returns:
* CAPN_MISALIGNED - if the unpacked data is not 8 byte aligned
* CAPN_NEED_MORE - more packed data/room is required (out for inflate, in for
* deflate)
* 0 - success, all output for inflate, all input for deflate processed
*/
int capn_deflate(struct capn_stream*);
int capn_inflate(struct capn_stream*);
int capn_marshal_iptr(const union capn_iptr*, struct capn_ptr*, int off);
/* Inline functions */