Provide environment overrides for psql file locations.

PSQL_HISTORY provides an alternative for the command history file,
and PSQLRC provides an alternative location for the .psqlrc file.

diff --git a/doc/src/sgml/ref/psql-ref.sgml b/doc/src/sgml/ref/psql-ref.sgml
index 55aa5f2ac1dc7cde2d994c14733b147977af28f1..fdeaea604047c4053663ec529e03a8f195b79c39 100644 (file)
--- a/doc/src/sgml/ref/psql-ref.sgml
+++ b/doc/src/sgml/ref/psql-ref.sgml
@@ -3340,6 +3340,26 @@ PSQL_EDITOR_LINENUMBER_ARG='--line '
     </listitem>
    </varlistentry>
 
+   <varlistentry>
+    <term><envar>PSQL_HISTORY</envar></term>
+
+    <listitem>
+     <para>
+      Alternative location for the command history file. Tilde ("~") expansion is performed.
+     </para>
+    </listitem>
+   </varlistentry>
+
+   <varlistentry>
+    <term><envar>PSQLRC</envar></term>
+
+    <listitem>
+     <para>
+      Alternative location of the user's .psqlrc file. Tilde ("~") expansion is performed.
+     </para>
+    </listitem>
+   </varlistentry>
+
    <varlistentry>
     <term><envar>SHELL</envar></term>
 
@@ -3390,6 +3410,11 @@ PSQL_EDITOR_LINENUMBER_ARG='--line '
      to set up the client or the server to taste (using the <command>\set
      </command> and <command>SET</command> commands).
     </para>
+    <para>
+     The location of the user's <filename>~/.psqlrc</filename> file can
+     also be set explicitly via the <envar>PSQLRC</envar> environment
+     setting.
+    </para>
    </listitem>
 
    <listitem>
@@ -3411,6 +3436,11 @@ PSQL_EDITOR_LINENUMBER_ARG='--line '
      <filename>~/.psql_history</filename>, or
      <filename>%APPDATA%\postgresql\psql_history</filename> on Windows.
     </para>
+    <para>
+     The location of the history file can
+     also be set explicitly via the <envar>PSQL_HISTORY</envar> environment
+     setting.
+    </para>
    </listitem>
   </itemizedlist>
  </refsect1>

diff --git a/src/bin/psql/input.c b/src/bin/psql/input.c
index d77a731c2ec46b14814bf7edaf27cbe5d6057ee9..880e7e6511d7d47e3bfbd3992265412656aa1003 100644 (file)
--- a/src/bin/psql/input.c
+++ b/src/bin/psql/input.c
@@ -285,6 +285,15 @@ initializeInput(int flags)
                history_lines_added = 0;
 
                histfile = GetVariable(pset.vars, "HISTFILE");
+
+               if (histfile == NULL)
+               {
+                       char * envhist;
+                       envhist = getenv("PSQL_HISTORY");
+                       if (envhist != NULL && strlen(envhist) > 0)
+                               histfile = envhist;
+               }
+
                if (histfile == NULL)
                {
                        if (get_home_path(home))

diff --git a/src/bin/psql/startup.c b/src/bin/psql/startup.c
index 166c227d6b6a8fef2ac002541b02b4ca6d866b8e..b5664dfd1d375b04676f02e95b827cfbf85880ec 100644 (file)
--- a/src/bin/psql/startup.c
+++ b/src/bin/psql/startup.c
@@ -591,6 +591,7 @@ process_psqlrc(char *argv0)
        char            rc_file[MAXPGPATH];
        char            my_exec_path[MAXPGPATH];
        char            etc_path[MAXPGPATH];
+       char       *envrc;
 
        find_my_exec(argv0, my_exec_path);
        get_etc_path(my_exec_path, etc_path);
@@ -598,7 +599,14 @@ process_psqlrc(char *argv0)
        snprintf(rc_file, MAXPGPATH, "%s/%s", etc_path, SYSPSQLRC);
        process_psqlrc_file(rc_file);
 
-       if (get_home_path(home))
+       envrc = getenv("PSQLRC");
+       
+       if (envrc != NULL && strlen(envrc) > 0)
+       {
+               expand_tilde(&envrc);
+               process_psqlrc_file(envrc);
+       }
+       else if (get_home_path(home))
        {
                snprintf(rc_file, MAXPGPATH, "%s/%s", home, PSQLRC);
                process_psqlrc_file(rc_file);