16 int init_data(struct upload_backend *be, const char *argv[])  in init_data()  argument
18     be->now = posix_time();  in init_data()
19     be->argv = argv;  in init_data()
21     memset(&be->zstream, 0, sizeof be->zstream);  in init_data()
23     be->zstream.next_out  = NULL;  in init_data()
24     be->outbuf = NULL;  in init_data()
25     be->zstream.avail_out = be->alloc  = 0;  in init_data()
26     be->dbytes = be->zbytes = 0;  in init_data()
29     if (deflateInit2(&be->zstream, 9, Z_DEFLATED,  in init_data()
36 static int do_deflate(struct upload_backend *be, int flush)  in do_deflate()  argument
42 	rv = deflate(&be->zstream, flush);  in do_deflate()
43 	be->zbytes = be->alloc - be->zstream.avail_out;  in do_deflate()
44 	if (be->zstream.avail_out)  in do_deflate()
47 	buf = realloc(be->outbuf, be->alloc + ALLOC_CHUNK);  in do_deflate()
50 	be->outbuf = buf;  in do_deflate()
51 	be->alloc += ALLOC_CHUNK;  in do_deflate()
52 	be->zstream.next_out = (void *)(buf + be->zbytes);  in do_deflate()
53 	be->zstream.avail_out = be->alloc - be->zbytes;  in do_deflate()
58 int write_data(struct upload_backend *be, const void *buf, size_t len)  in write_data()  argument
62     be->zstream.next_in = (void *)buf;  in write_data()
63     be->zstream.avail_in = len;  in write_data()
65     be->dbytes += len;  in write_data()
67     while (be->zstream.avail_in) {  in write_data()
68 	rv = do_deflate(be, Z_NO_FLUSH);  in write_data()
78 int flush_data(struct upload_backend *be)  in flush_data()  argument
84 	rv = do_deflate(be, Z_FINISH);  in flush_data()
89 //    printf("Uploading data, %u bytes... ", be->zbytes);  in flush_data()
91     if ((err=be->write(be)) != 0)  in flush_data()
94     free(be->outbuf);  in flush_data()
95     be->outbuf = NULL;  in flush_data()
96     be->dbytes = be->zbytes = be->alloc = 0;  in flush_data()