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体验新版 GitCode,发现更多精彩内容 >>
提交
d7186cfa
编写于
10月 24, 2000
作者:
T
Tom Lane
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
Add some modicum of error detection...
上级
570ed464
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
22 addition
and
12 deletion
+22
-12
src/test/examples/testlo.c
src/test/examples/testlo.c
+22
-12
未找到文件。
src/test/examples/testlo.c
浏览文件 @
d7186cfa
...
...
@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/test/examples/testlo.c,v 1.1
5 2000/04/25 16:39:07 momjian
Exp $
* $Header: /cvsroot/pgsql/src/test/examples/testlo.c,v 1.1
6 2000/10/24 00:08:02 tgl
Exp $
*
*-------------------------------------------------------------------------
*/
...
...
@@ -96,6 +96,8 @@ pickout(PGconn *conn, Oid lobjId, int start, int len)
buf
[
nbytes
]
=
'\0'
;
fprintf
(
stderr
,
">>> %s"
,
buf
);
nread
+=
nbytes
;
if
(
nbytes
<=
0
)
break
;
/* no more data? */
}
fprintf
(
stderr
,
"
\n
"
);
lo_close
(
conn
,
lobj_fd
);
...
...
@@ -126,6 +128,11 @@ overwrite(PGconn *conn, Oid lobjId, int start, int len)
{
nbytes
=
lo_write
(
conn
,
lobj_fd
,
buf
+
nwritten
,
len
-
nwritten
);
nwritten
+=
nbytes
;
if
(
nbytes
<=
0
)
{
fprintf
(
stderr
,
"
\n
WRITE FAILED!
\n
"
);
break
;
}
}
fprintf
(
stderr
,
"
\n
"
);
lo_close
(
conn
,
lobj_fd
);
...
...
@@ -229,21 +236,24 @@ main(int argc, char **argv)
/* lobjOid = importFile(conn, in_filename); */
lobjOid
=
lo_import
(
conn
,
in_filename
);
if
(
lobjOid
==
0
)
{
fprintf
(
stderr
,
"%s
\n
"
,
PQerrorMessage
(
conn
));
}
else
{
printf
(
"
\t
as large object %u.
\n
"
,
lobjOid
);
printf
(
"
\t
as large object %u.
\n
"
,
lobjOid
);
printf
(
"picking out bytes 1000-2000 of the large object
\n
"
);
pickout
(
conn
,
lobjOid
,
1000
,
1000
);
printf
(
"overwriting bytes 1000-2000 of the large object with X's
\n
"
);
overwrite
(
conn
,
lobjOid
,
1000
,
1000
);
printf
(
"picking out bytes 1000-2000 of the large object
\n
"
);
pickout
(
conn
,
lobjOid
,
1000
,
1000
);
printf
(
"overwriting bytes 1000-2000 of the large object with X's
\n
"
);
overwrite
(
conn
,
lobjOid
,
1000
,
1000
);
printf
(
"exporting large object to file
\"
%s
\"
...
\n
"
,
out_filename
);
/* exportFile(conn, lobjOid, out_filename); */
if
(
!
lo_export
(
conn
,
lobjOid
,
out_filename
))
fprintf
(
stderr
,
"%s
\n
"
,
PQerrorMessage
(
conn
));
printf
(
"exporting large object to file
\"
%s
\"
...
\n
"
,
out_filename
);
/* exportFile(conn, lobjOid, out_filename); */
if
(
!
lo_export
(
conn
,
lobjOid
,
out_filename
))
fprintf
(
stderr
,
"%s
\n
"
,
PQerrorMessage
(
conn
));
}
res
=
PQexec
(
conn
,
"end"
);
PQclear
(
res
);
...
...
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