mirror of https://github.com/postgres/postgres
and now, the long awaited PAGER patches from Bruce...
Submitted by: Bruce Momjian <maillist@candle.pha.pa.us>
This commit is contained in:
Marc G. Fournier
parent
6e077b0ae5
commit
edb519b14c
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@ -7,7 +7,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/bin/psql/Attic/psql.c,v 1.8 1996/07/27 02:40:45 scrappy Exp $
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* $Header: /cvsroot/pgsql/src/bin/psql/Attic/psql.c,v 1.9 1996/07/27 02:55:11 scrappy Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -111,7 +111,7 @@ usage(char* progname)
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fprintf(stderr,"\t -S single line mode (i.e. query terminated by newline)\n");
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fprintf(stderr,"\t -t turn off printing of attribute headers\n");
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fprintf(stderr,"\t -T html set html3.0 table command options (cf. -H)\n");
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fprintf(stderr,"\t -x turn on expanded output (field names on left)");
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fprintf(stderr,"\t -x turn on expanded output (field names on left)\n");
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exit(1);
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}
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@ -1131,6 +1131,7 @@ main(int argc, char** argv)
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settings.opt.header = 1;
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settings.queryFout = stdout;
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settings.opt.fieldSep=dupstr(DEFAULT_FIELD_SEP);
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settings.opt.pager = 1;
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if (!isatty(0) || !isatty(1))
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settings.quiet = settings.notty = 1;
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else
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@ -7,7 +7,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/interfaces/libpq/fe-exec.c,v 1.6 1996/07/25 06:21:11 julian Exp $
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* $Header: /cvsroot/pgsql/src/interfaces/libpq/fe-exec.c,v 1.7 1996/07/27 02:55:19 scrappy Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -20,6 +20,11 @@
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#include "libpq/pqcomm.h"
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#include "libpq-fe.h"
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#include <signal.h>
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#include <sys/ioctl.h>
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#ifdef TIOCGWINSZ
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struct winsize screen_size;
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#endif
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/* the tuples array in a PGresGroup has to grow to accommodate the tuples */
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/* returned. Each time, we grow by this much: */
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@ -644,10 +649,7 @@ fill (int length, int max, char filler, FILE *fp)
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/*
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* PQdisplayTuples()
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*
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* a better version of PQprintTuples()
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* that can optionally do padding of fields with spaces and use different
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* field separators
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* kept for backward compatibility
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*/
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void
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PQdisplayTuples(PGresult *res,
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@ -660,13 +662,10 @@ PQdisplayTuples(PGresult *res,
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{
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#define DEFAULT_FIELD_SEP " "
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char *pager;
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int i, j;
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int nFields;
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int nTuples;
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int fLength[MAX_FIELDS];
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int usePipe = 0;
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int total_line_length = 0;
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if (fieldSep == NULL)
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fieldSep == DEFAULT_FIELD_SEP;
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@ -691,29 +690,8 @@ PQdisplayTuples(PGresult *res,
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fLength[j] = PQgetlength(res,i,j);
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}
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}
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for (j=0 ; j < nFields; j++)
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total_line_length += fLength[j];
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total_line_length += nFields * strlen(fieldSep) + 2; /* delimiters */
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}
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/* Use the pager only if the number of tuples is big enough */
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pager=getenv("PAGER");
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if ((nTuples > 20)
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&& (fp == stdout)
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&& (pager != NULL)
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&& isatty(fileno(stdout))
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&& (nTuples * (total_line_length / 80 + 1) >= 24
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- (printHeader != 0) * (total_line_length / 80 + 1) * 2
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- 1 /* newline at end of tuple list */ - (quiet == 0))) {
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fp = popen(pager, "w");
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if (fp) {
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usePipe = 1;
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signal(SIGPIPE, SIG_IGN);
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} else {
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fp = stdout;
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}
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}
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if (printHeader) {
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/* first, print out the attribute names */
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for (i=0; i < nFields; i++) {
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@ -749,10 +727,6 @@ PQdisplayTuples(PGresult *res,
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(PQntuples(res) == 1) ? "" : "s");
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fflush(fp);
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if (usePipe) {
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pclose(fp);
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signal(SIGPIPE, SIG_DFL);
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}
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}
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@ -760,11 +734,8 @@ PQdisplayTuples(PGresult *res,
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/*
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* PQprintTuples()
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*
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* This is the routine that prints out the tuples that
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* are returned from the backend.
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* Right now all columns are of fixed length,
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* this should be changed to allow wrap around for
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* tuples values that are wider.
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* kept for backward compatibility
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*
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*/
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void
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PQprintTuples(PGresult *res,
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@ -833,6 +804,8 @@ PQprintTuples(PGresult *res,
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}
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/*
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* PQprint()
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*
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* new PQprintTuples routine (proff@suburbia.net)
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* PQprintOpt is a typedef (structure) that containes
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* various flags and options. consult libpq-fe.h for
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@ -860,6 +833,10 @@ PQprint(FILE *fout,
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char *border=NULL;
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int numFieldName;
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int fs_len=strlen(po->fieldSep);
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int total_line_length = 0;
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int usePipe = 0;
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char *pagerenv;
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nTups = PQntuples(res);
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if (!(fieldNames=(char **)calloc(nFields, sizeof (char *))))
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{
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@ -876,7 +853,8 @@ PQprint(FILE *fout,
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perror("calloc");
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exit(1);
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}
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for (numFieldName=0; po->fieldName && po->fieldName[numFieldName]; numFieldName++);
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for (numFieldName=0; po->fieldName && po->fieldName[numFieldName]; numFieldName++)
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;
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for (j=0; j < nFields; j++)
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{
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int len;
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@ -891,7 +869,48 @@ PQprint(FILE *fout,
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len+=fs_len;
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if (len>fieldMaxLen)
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fieldMaxLen=len;
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total_line_length += len;
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}
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total_line_length += nFields * strlen(po->fieldSep) + 1;
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if (fout == NULL)
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fout = stdout;
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if (po->pager && fout == stdout && isatty(fileno(stdout))) {
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/* try to pipe to the pager program if possible */
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#ifdef TIOCGWINSZ
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if (ioctl(fileno(stdout),TIOCGWINSZ,&screen_size) == -1)
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{
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#endif
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screen_size.ws_row = 24;
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screen_size.ws_col = 80;
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#ifdef TIOCGWINSZ
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}
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#endif
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pagerenv=getenv("PAGER");
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if (pagerenv != NULL &&
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!po->html3 &&
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((po->expanded &&
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nTups * (nFields+1) >= screen_size.ws_row) ||
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(!po->expanded &&
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nTups * (total_line_length / screen_size.ws_col + 1) *
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( 1 + (po->standard != 0)) >=
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screen_size.ws_row -
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(po->header != 0) *
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(total_line_length / screen_size.ws_col + 1) * 2
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/*- 1 */ /* newline at end of tuple list */
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/*- (quiet == 0)*/
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)))
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{
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fout = popen(pagerenv, "w");
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if (fout) {
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usePipe = 1;
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signal(SIGPIPE, SIG_IGN);
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} else
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fout = stdout;
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}
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}
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if (!po->expanded && (po->align || po->html3))
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{
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if (!(fields=(char **)calloc(nFields*(nTups+1), sizeof(char *))))
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@ -1114,6 +1133,10 @@ efield:
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free(fieldMax);
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free(fieldNotNum);
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free(fieldNames);
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if (usePipe) {
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pclose(fout);
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signal(SIGPIPE, SIG_DFL);
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}
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if (border)
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free(border);
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if (po->html3 && !po->expanded)
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@ -6,7 +6,7 @@
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*
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* Copyright (c) 1994, Regents of the University of California
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*
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* $Id: libpq-fe.h,v 1.3 1996/07/23 03:35:14 scrappy Exp $
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* $Id: libpq-fe.h,v 1.4 1996/07/27 02:55:23 scrappy Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -133,6 +133,7 @@ struct _PQprintOpt {
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bool standard; /* old brain dead format */
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bool html3; /* output html tables */
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bool expanded; /* expand tables */
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bool pager; /* use pager for output if needed */
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char *fieldSep; /* field separator */
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char *tableOpt; /* insert to HTML <table ...> */
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char *caption; /* HTML <caption> */
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