<term><literal>\watch [ <replaceable class="parameter">seconds</replaceable> ]</literal></term>

<listitem>

<para>

Repeatedly execute the current query buffer (like <literal>\g</>)

Repeatedly execute the current query buffer (as <literal>\g</> does)

until interrupted or the query fails. Wait the specified number of

seconds (default 2) between executions.

seconds (default 2) between executions. Each query result is

displayed with a header that includes the <literal>\pset title</>

string (if any), the time as of query start, and the delay interval.

</para>

</listitem>

</varlistentry>

do_watch(PQExpBufferquery_buf,longsleep)

{

printQueryOptmyopt=pset.popt;

chartitle[50];

constchar*user_title;

char*title;

inttitle_len;

intres=0;

if (!query_buf||query_buf->len <=0)

{

myopt.topt.pager=0;

user_title=myopt.title;

title_len= (user_title ?strlen(user_title) :0)+100;

title=pg_malloc(title_len);

for (;;)

{

intres;

time_ttimer;

charasctimebuf[64];

longi;

timer=time(NULL);

snprintf(title,sizeof(title),_("Watch every %lds\t%s"),

sleep,asctime(localtime(&timer)));

strlcpy(asctimebuf,asctime(localtime(&timer)),sizeof(asctimebuf));

i=strlen(asctimebuf);

while (i>0&&asctimebuf[--i]=='\n')

asctimebuf[i]='\0';

if (user_title)

snprintf(title,title_len,_("%s\t%s (every %lds)\n"),

user_title,asctimebuf,sleep);

snprintf(title,title_len,_("%s (every %lds)\n"),

asctimebuf,sleep);

myopt.title=title;

if (res==0)

if (res<=0)

break;

if (res==-1)

return false;

sigint_interrupt_enabled= false;

}

return true;

pg_free(title);

return (res >=0);

}