Hi,
On 03.09.2021 15:25, Georgios Kokolatos wrote:
On a high level I will recommend the addition of tests. There are similar tests
Tests added.
Applying the patch, generates several whitespace warnings. It will be helpful
if those warnings are removed.
I know this is a silly mistake, and after reading this article[1] I
tried to remove the extra spaces.
Can you tell me, please, how can you get such warnings?
The patch contains:
case 'l':
- success = do_lo_list();
+ success = listLargeObjects(show_verbose);
It might be of some interest to consider in the above to check the value of the
next character in command or emit an error if not valid. Such a pattern can be
found in the same switch block as for example:
switch (cmd[2])
{
case '\0':
case '+':
<snip>
success = ...
</snip>
break;
default:
status = PSQL_CMD_UNKNOWN;
break;
}
Check added.
The patch contains:
else if (strcmp(cmd + 3, "list") == 0)
- success = do_lo_list();
+ success = listLargeObjects(false);
+
+ else if (strcmp(cmd + 3, "list+") == 0)
+ success = listLargeObjects(true);
In a fashion similar to `exec_command_list`, it might be interesting to consider
expressing the above as:
show_verbose = strchr(cmd, '+') ? true : false;
<snip>
else if (strcmp(cmd + 3, "list") == 0
success = do_lo_list(show_verbose);
I rewrote this part.
New version attached.
[1] https://wiki.postgresql.org/wiki/Creating_Clean_Patches
--
Pavel Luzanov
Postgres Professional: https://postgrespro.com
The Russian Postgres Company
diff --git a/doc/src/sgml/ddl.sgml b/doc/src/sgml/ddl.sgml
index e0ffb020bf..374515bcb2 100644
--- a/doc/src/sgml/ddl.sgml
+++ b/doc/src/sgml/ddl.sgml
@@ -2094,7 +2094,7 @@ REVOKE ALL ON accounts FROM PUBLIC;
<entry><literal>LARGE OBJECT</literal></entry>
<entry><literal>rw</literal></entry>
<entry>none</entry>
- <entry></entry>
+ <entry><literal>\dl+</literal></entry>
</row>
<row>
<entry><literal>SCHEMA</literal></entry>
diff --git a/doc/src/sgml/ref/psql-ref.sgml b/doc/src/sgml/ref/psql-ref.sgml
index fcab5c0d51..de47ef528e 100644
--- a/doc/src/sgml/ref/psql-ref.sgml
+++ b/doc/src/sgml/ref/psql-ref.sgml
@@ -1681,11 +1681,13 @@ testdb=>
<varlistentry>
- <term><literal>\dl</literal></term>
+ <term><literal>\dl[+]</literal></term>
<listitem>
<para>
This is an alias for <command>\lo_list</command>, which shows a
- list of large objects.
+ list of large objects. If <literal>+</literal> is appended
+ to the command name, each large object is listed with its
+ associated permissions, if any.
</para>
</listitem>
</varlistentry>
@@ -2588,12 +2590,15 @@ lo_import 152801
</varlistentry>
<varlistentry>
- <term><literal>\lo_list</literal></term>
+ <term><literal>\lo_list[+]</literal></term>
<listitem>
<para>
Shows a list of all <productname>PostgreSQL</productname>
large objects currently stored in the database,
along with any comments provided for them.
+ If <literal>+</literal> is appended to the command name,
+ each large object is listed with its associated permissions,
+ if any.
</para>
</listitem>
</varlistentry>
diff --git a/src/bin/psql/command.c b/src/bin/psql/command.c
index 49d4c0e3ce..f3645cab96 100644
--- a/src/bin/psql/command.c
+++ b/src/bin/psql/command.c
@@ -807,7 +807,16 @@ exec_command_d(PsqlScanState scan_state, bool active_branch, const char *cmd)
success = describeRoles(pattern, show_verbose, show_system);
break;
case 'l':
- success = do_lo_list();
+ switch (cmd[2])
+ {
+ case '\0':
+ case '+':
+ success = listLargeObjects(show_verbose);
+ break;
+ default:
+ status = PSQL_CMD_UNKNOWN;
+ break;
+ }
break;
case 'L':
success = listLanguages(pattern, show_verbose, show_system);
@@ -1901,11 +1910,13 @@ exec_command_lo(PsqlScanState scan_state, bool active_branch, const char *cmd)
{
char *opt1,
*opt2;
+ bool show_verbose;
opt1 = psql_scan_slash_option(scan_state,
OT_NORMAL, NULL, true);
opt2 = psql_scan_slash_option(scan_state,
OT_NORMAL, NULL, true);
+ show_verbose = strchr(cmd, '+') ? true : false;
if (strcmp(cmd + 3, "export") == 0)
{
@@ -1935,8 +1946,8 @@ exec_command_lo(PsqlScanState scan_state, bool active_branch, const char *cmd)
}
}
- else if (strcmp(cmd + 3, "list") == 0)
- success = do_lo_list();
+ else if (strcmp(cmd + 3, "list") == 0 || strcmp(cmd + 3, "list+") == 0)
+ success = listLargeObjects(show_verbose);
else if (strcmp(cmd + 3, "unlink") == 0)
{
diff --git a/src/bin/psql/describe.c b/src/bin/psql/describe.c
index 90ff649be7..a079ce9e36 100644
--- a/src/bin/psql/describe.c
+++ b/src/bin/psql/describe.c
@@ -6828,3 +6828,64 @@ listOpFamilyFunctions(const char *access_method_pattern,
PQclear(res);
return true;
}
+
+/*
+ * \dl or \lo_list
+ * Lists large objects in database
+ */
+bool
+listLargeObjects(bool verbose)
+{
+ PQExpBufferData buf;
+ PGresult *res;
+ printQueryOpt myopt = pset.popt;
+
+ initPQExpBuffer(&buf);
+
+ if (pset.sversion >= 90000)
+ {
+ printfPQExpBuffer(&buf,
+ "SELECT oid as \"%s\",\n"
+ " pg_catalog.pg_get_userbyid(lomowner) as \"%s\",\n ",
+ gettext_noop("ID"),
+ gettext_noop("Owner"));
+
+ if (verbose)
+ {
+ printACLColumn(&buf, "lomacl");
+ appendPQExpBufferStr(&buf, ",\n ");
+ }
+
+ appendPQExpBuffer(&buf,
+ "pg_catalog.obj_description(oid, 'pg_largeobject') as \"%s\"\n"
+ "FROM pg_catalog.pg_largeobject_metadata\n"
+ "ORDER BY oid",
+ gettext_noop("Description"));
+
+ }
+ else
+ {
+ printfPQExpBuffer(&buf,
+ "SELECT loid as \"%s\",\n"
+ " pg_catalog.obj_description(loid, 'pg_largeobject') as \"%s\"\n"
+ "FROM (SELECT DISTINCT loid FROM pg_catalog.pg_largeobject) x\n"
+ "ORDER BY 1",
+ gettext_noop("ID"),
+ gettext_noop("Description"));
+ }
+
+ res = PSQLexec(buf.data);
+ termPQExpBuffer(&buf);
+ if (!res)
+ return false;
+
+ myopt.topt.tuples_only = false;
+ myopt.nullPrint = NULL;
+ myopt.title = _("Large objects");
+ myopt.translate_header = true;
+
+ printQuery(res, &myopt, pset.queryFout, false, pset.logfile);
+
+ PQclear(res);
+ return true;
+}
diff --git a/src/bin/psql/describe.h b/src/bin/psql/describe.h
index 71b320f1fc..53738cc0cb 100644
--- a/src/bin/psql/describe.h
+++ b/src/bin/psql/describe.h
@@ -139,5 +139,8 @@ extern bool listOpFamilyOperators(const char *accessMethod_pattern,
extern bool listOpFamilyFunctions(const char *access_method_pattern,
const char *family_pattern, bool verbose);
+/* \dl or \lo_list */
+extern bool listLargeObjects(bool verbose);
+
#endif /* DESCRIBE_H */
diff --git a/src/bin/psql/help.c b/src/bin/psql/help.c
index d3fda67edd..7f1c9bc912 100644
--- a/src/bin/psql/help.c
+++ b/src/bin/psql/help.c
@@ -248,7 +248,7 @@ slashUsage(unsigned short int pager)
fprintf(output, _(" \\dFt[+] [PATTERN] list text search templates\n"));
fprintf(output, _(" \\dg[S+] [PATTERN] list roles\n"));
fprintf(output, _(" \\di[S+] [PATTERN] list indexes\n"));
- fprintf(output, _(" \\dl list large objects, same as \\lo_list\n"));
+ fprintf(output, _(" \\dl[+] list large objects, same as \\lo_list\n"));
fprintf(output, _(" \\dL[S+] [PATTERN] list procedural languages\n"));
fprintf(output, _(" \\dm[S+] [PATTERN] list materialized views\n"));
fprintf(output, _(" \\dn[S+] [PATTERN] list schemas\n"));
@@ -324,7 +324,7 @@ slashUsage(unsigned short int pager)
fprintf(output, _("Large Objects\n"));
fprintf(output, _(" \\lo_export LOBOID FILE\n"
" \\lo_import FILE [COMMENT]\n"
- " \\lo_list\n"
+ " \\lo_list[+]\n"
" \\lo_unlink LOBOID large object operations\n"));
ClosePager(output);
diff --git a/src/bin/psql/large_obj.c b/src/bin/psql/large_obj.c
index c15fcc0885..243875be83 100644
--- a/src/bin/psql/large_obj.c
+++ b/src/bin/psql/large_obj.c
@@ -262,55 +262,3 @@ do_lo_unlink(const char *loid_arg)
return true;
}
-
-
-
-/*
- * do_lo_list()
- *
- * Show all large objects in database with comments
- */
-bool
-do_lo_list(void)
-{
- PGresult *res;
- char buf[1024];
- printQueryOpt myopt = pset.popt;
-
- if (pset.sversion >= 90000)
- {
- snprintf(buf, sizeof(buf),
- "SELECT oid as \"%s\",\n"
- " pg_catalog.pg_get_userbyid(lomowner) as \"%s\",\n"
- " pg_catalog.obj_description(oid, 'pg_largeobject') as \"%s\"\n"
- " FROM pg_catalog.pg_largeobject_metadata "
- " ORDER BY oid",
- gettext_noop("ID"),
- gettext_noop("Owner"),
- gettext_noop("Description"));
- }
- else
- {
- snprintf(buf, sizeof(buf),
- "SELECT loid as \"%s\",\n"
- " pg_catalog.obj_description(loid, 'pg_largeobject') as \"%s\"\n"
- "FROM (SELECT DISTINCT loid FROM pg_catalog.pg_largeobject) x\n"
- "ORDER BY 1",
- gettext_noop("ID"),
- gettext_noop("Description"));
- }
-
- res = PSQLexec(buf);
- if (!res)
- return false;
-
- myopt.topt.tuples_only = false;
- myopt.nullPrint = NULL;
- myopt.title = _("Large objects");
- myopt.translate_header = true;
-
- printQuery(res, &myopt, pset.queryFout, false, pset.logfile);
-
- PQclear(res);
- return true;
-}
diff --git a/src/bin/psql/large_obj.h b/src/bin/psql/large_obj.h
index 003acbf52c..3172a7704d 100644
--- a/src/bin/psql/large_obj.h
+++ b/src/bin/psql/large_obj.h
@@ -11,6 +11,5 @@
bool do_lo_export(const char *loid_arg, const char *filename_arg);
bool do_lo_import(const char *filename_arg, const char *comment_arg);
bool do_lo_unlink(const char *loid_arg);
-bool do_lo_list(void);
#endif /* LARGE_OBJ_H */
diff --git a/src/test/regress/expected/psql.out b/src/test/regress/expected/psql.out
index 1b2f6bc418..62002e4ec3 100644
--- a/src/test/regress/expected/psql.out
+++ b/src/test/regress/expected/psql.out
@@ -5179,3 +5179,49 @@ List of access methods
pg_catalog | && | anyarray | anyarray | boolean | overlaps
(1 row)
+-- check printing info about large objects
+CREATE ROLE lo_test;
+SELECT lo_create(42);
+ lo_create
+-----------
+ 42
+(1 row)
+
+ALTER LARGE OBJECT 42 OWNER TO lo_test;
+GRANT SELECT ON LARGE OBJECT 42 TO public;
+\dl
+ Large objects
+ ID | Owner | Description
+----+---------+-------------
+ 42 | lo_test |
+(1 row)
+
+\dl+
+ Large objects
+ ID | Owner | Access privileges | Description
+----+---------+--------------------+-------------
+ 42 | lo_test | lo_test=rw/lo_test+|
+ | | =r/lo_test |
+(1 row)
+
+\lo_list
+ Large objects
+ ID | Owner | Description
+----+---------+-------------
+ 42 | lo_test |
+(1 row)
+
+\lo_list+
+ Large objects
+ ID | Owner | Access privileges | Description
+----+---------+--------------------+-------------
+ 42 | lo_test | lo_test=rw/lo_test+|
+ | | =r/lo_test |
+(1 row)
+
+\dl-
+invalid command \dl-
+\lo_list-
+invalid command \lo_list-
+\lo_unlink 42
+DROP ROLE lo_test;
diff --git a/src/test/regress/sql/psql.sql b/src/test/regress/sql/psql.sql
index 68121d171c..43b38213f6 100644
--- a/src/test/regress/sql/psql.sql
+++ b/src/test/regress/sql/psql.sql
@@ -1241,3 +1241,18 @@ drop role regress_partitioning_role;
\dfa bit* small*
\do - pg_catalog.int4
\do && anyarray *
+
+-- check printing info about large objects
+CREATE ROLE lo_test;
+SELECT lo_create(42);
+ALTER LARGE OBJECT 42 OWNER TO lo_test;
+GRANT SELECT ON LARGE OBJECT 42 TO public;
+\dl
+\dl+
+\lo_list
+\lo_list+
+\dl-
+\lo_list-
+\lo_unlink 42
+DROP ROLE lo_test;
+
