static void test_fseek(int buflen)
{
ACL_VSTREAM *fp;
ACL_VSTRING *why = acl_vstring_alloc(100);
char filename[] ="./tmp.txt";
char buf[10];
int n;
int offset, off2;
int ch;
fp = acl_safe_open(filename, O_CREAT | O_RDWR, 0600,
(struct stat *) 0, (uid_t)-1,
(uid_t )-1, why);
if (fp == 0)
acl_msg_fatal("%s(%d)->%s: can't open %s, serr = %s",
__FILE__, __LINE__, __FUNCTION__, filename, acl_vstring_str(why));
fp->read_buf_len = buflen;
ch = acl_vstream_getc(fp);
printf("after read(1)(%d) >>> ch = %c, read_cnt = %d, offset=%d, %d\n",
__LINE__, ch, (int) fp->read_cnt, (int) fp->offset, (int) fp->sys_offset);
offset = acl_vstream_fseek(fp, 0, SEEK_CUR);
printf("after fseek(0)(%d) >>> ch = %c, read_cnt = %d, off = %d, offset=%d, %d\n\n",
__LINE__, ch, (int) fp->read_cnt, offset, (int) fp->offset, (int) fp->sys_offset);
ch = acl_vstream_getc(fp);
printf("after read(1)(%d) >>> ch = %c, read_cnt = %d, offset=%d, %d\n",
__LINE__, ch, (int) fp->read_cnt, (int) fp->offset, (int) fp->sys_offset);
offset = acl_vstream_fseek(fp, 0, SEEK_CUR);
printf("after fseek(0)(%d) >>> ch = %c, read_cnt = %d, off = %d, %s, offset=%d, %d\n\n",
__LINE__, ch, (int) fp->read_cnt, offset, strerror(errno), (int) fp->offset, (int) fp->sys_offset);
offset = acl_vstream_fseek(fp, 10, SEEK_CUR);
off2 = lseek(ACL_VSTREAM_FILE(fp), 0, SEEK_CUR);
printf("after fseek(10)(%d) >>> off=%d, %d, lseek = %d, read_cnt = %d, offset=%d, %d\n\n",
__LINE__, offset, (int) fp->sys_offset, off2, (int) fp->read_cnt, (int) fp->offset, (int) fp->sys_offset);
n = acl_vstream_gets(fp, buf, sizeof(buf) - 1);
printf("after read(getline)(%d) >>> buf = [%s], n = %d, fp->read_cnt = %d, offset=%d, %d, lseek=%d\n",
__LINE__, buf, n, (int) fp->read_cnt, (int) fp->offset, (int)fp->sys_offset,
(int) lseek(ACL_VSTREAM_FILE(fp), 0, SEEK_CUR));
offset = acl_vstream_fseek(fp, 0, SEEK_CUR);
printf("after fseek(0)(%d) >>> buf = [%s], read_cnt = %d, off = %d, %d, offset=%d, %d\n\n",
__LINE__, buf, (int) fp->read_cnt, offset, (int) lseek(ACL_VSTREAM_FILE(fp), 0, SEEK_CUR),
(int) fp->offset, (int) fp->sys_offset);
ch = acl_vstream_getc(fp);
printf("after read(1)(%d) >>> ch = %c, read_cnt = %d, offset=%d, %d\n",
__LINE__, ch, (int) fp->read_cnt, (int) fp->offset, (int) fp->sys_offset);
offset = acl_vstream_fseek(fp, 0, SEEK_CUR);
printf("after fseek(0)(%d) >>> ch = %c, read_cnt = %d, off = %d, %d, offset=%d, %d\n\n",
__LINE__, ch, (int) fp->read_cnt, offset, (int) lseek(ACL_VSTREAM_FILE(fp), 0, SEEK_CUR),
(int) fp->offset, (int) fp->sys_offset);
n = acl_vstream_readn(fp, buf, 2);
buf[n] = 0;
printf("after read(buf)(%d) >>> buf = [%s], fp->read_cnt = %d, offset=%d, %d\n",
__LINE__, buf, (int) fp->read_cnt, (int) fp->offset, (int) fp->sys_offset);
offset = acl_vstream_fseek(fp, 10, SEEK_CUR);
printf("after fseek(10)(%d) >>> read_cnt = %d, off = %d, offset=%d, %d\n\n",
__LINE__, (int) fp->read_cnt, offset, (int) fp->offset, (int) fp->sys_offset);
ch = acl_vstream_getc(fp);
printf("after read(1)(%d) >>> ch = %c, read_cnt = %d, offset=%d, %d\n",
__LINE__, ch, (int) fp->read_cnt, (int) fp->offset, (int) fp->sys_offset);
offset = acl_vstream_fseek(fp, 0, SEEK_CUR);
printf("after fseek(0)(%d) >>> ch = %c, read_cnt = %d, off = %d, %s, offset=%d, %d\n\n",
__LINE__, ch, (int) fp->read_cnt, offset, strerror(errno), (int) fp->offset, (int) fp->sys_offset);
acl_vstring_free(why);
acl_vstream_close(fp);
}
acl_off_t fstream::fseek(acl_off_t offset, int whence)
{
return (acl_vstream_fseek(m_pStream, offset, whence));
}
