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psql: Add variable SERVICEFILE

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This new psql variable can be used to check which service file has been
used for a connection.  Like other variables, this can be set in a
PROMPT or reported by an \echo, like these commands:
\echo :SERVICEFILE
\set PROMPT1 '=(%:SERVICEFILE:)%# '

This relies on commits 092f3c63ef and fef6da9e9c to retrieve this
information from the connection's PQconninfoOption.

Author: Ryo Kanbayashi <kanbayashi.dev@gmail.com>
Discussion: https://postgr.es/m/CAKkG4_nCjx3a_F3gyXHSPWxD8Sd8URaM89wey7fG_9g7KBkOCQ@mail.gmail.com
This commit is contained in:
Michael Paquier
2025-07-14 09:08:46 +09:00
parent 3c4e26a62c
commit 6b1c4d326b
2 changed files with 16 additions and 0 deletions
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9
doc/src/sgml/ref/psql-ref.sgml
View File

@ -4623,6 +4623,15 @@ bar
</listitem>
</varlistentry>
<varlistentry id="app-psql-variables-servicefile">
<term><varname>SERVICEFILE</varname></term>
<listitem>
<para>
The service file name, if applicable.
</para>
</listitem>
</varlistentry>
<varlistentry id="app-psql-variables-shell-error">
<term><varname>SHELL_ERROR</varname></term>
<listitem>

7
src/bin/psql/command.c
View File

@ -4481,6 +4481,7 @@ SyncVariables(void)
char vbuf[32];
const char *server_version;
char *service_name;
char *service_file;
/* get stuff from connection */
pset.encoding = PQclientEncoding(pset.db);
@ -4500,6 +4501,11 @@ SyncVariables(void)
if (service_name)
pg_free(service_name);
service_file = get_conninfo_value("servicefile");
SetVariable(pset.vars, "SERVICEFILE", service_file);
if (service_file)
pg_free(service_file);
/* this bit should match connection_warnings(): */
/* Try to get full text form of version, might include "devel" etc */
server_version = PQparameterStatus(pset.db, "server_version");
@ -4529,6 +4535,7 @@ UnsyncVariables(void)
{
SetVariable(pset.vars, "DBNAME", NULL);
SetVariable(pset.vars, "SERVICE", NULL);
SetVariable(pset.vars, "SERVICEFILE", NULL);
SetVariable(pset.vars, "USER", NULL);
SetVariable(pset.vars, "HOST", NULL);
SetVariable(pset.vars, "PORT", NULL);