mirror of
https://git.postgresql.org/git/postgresql.git
synced 2025-01-24 18:55:04 +08:00
libpq and psql.c have been modified to do various things they didn't do
before (plus some optimisations/bug fixes et al). I've included a small demo transcript below. Note that all of of the display functionality/intelligence you see here, can be had merely by calling the new LIBPQ PQprint() routine with the appropriate arguments/options, including the HTML3 output guff. submitted by: Julian Assange <proff@suburbia.net>
This commit is contained in:
Marc G. Fournier
parent
bc0bd47c6a
commit
72f76d38eb
@ -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/monitor/Attic/monitor.c,v 1.1.1.1 1996/07/09 06:22:13 scrappy Exp $
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* $Header: /cvsroot/pgsql/src/bin/monitor/Attic/monitor.c,v 1.2 1996/07/18 05:48:34 scrappy Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -642,6 +642,7 @@ handle_execution(char *query)
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{
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PGresult *result;
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int retval = 0;
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PQprintOpt opt;
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result = PQexec(conn, query);
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@ -657,11 +658,18 @@ handle_execution(char *query)
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break;
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case PGRES_TUPLES_OK:
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/* PQprintTuples(result,stdout,PrintAttNames,TerseOutput,COLWIDTH); */
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if (TerseOutput)
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/* if (TerseOutput)
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PQdisplayTuples(result,stdout,1,"",PrintAttNames,TerseOutput);
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else
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PQdisplayTuples(result,stdout,1,"|",PrintAttNames,TerseOutput);
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break;
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PQdisplayTuples(result,stdout,1,"|",PrintAttNames,TerseOutput); */
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memset(&opt, 0, sizeof opt);
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opt.header = opt.align = opt.standard = 1;
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if (TerseOutput)
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opt.fieldSep = "";
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else
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opt.fieldSep = "|";
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PQprint(stdout, result, &opt);
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break;
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case PGRES_COPY_OUT:
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handle_copy_out(result);
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break;
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File diff suppressed because it is too large
Load Diff
@ -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 1.2 1996/07/12 04:53:59 scrappy Exp $
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* $Header: /cvsroot/pgsql/src/interfaces/libpq/fe-exec.c,v 1.3 1996/07/18 05:48:56 scrappy Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -18,7 +18,6 @@
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#include "postgres.h"
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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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/* 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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@ -39,7 +38,6 @@ static PGresult* makePGresult(PGconn *conn, char *pname);
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static void addTuple(PGresult *res, PGresAttValue *tup);
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static PGresAttValue* getTuple(PGconn *conn, PGresult *res, int binary);
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static PGresult* makeEmptyPGresult(PGconn *conn, ExecStatusType status);
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static void fill(int length, int max, char filler, FILE *fp);
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/*
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* PQclear -
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@ -624,133 +622,13 @@ PQendcopy(PGconn *conn)
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}
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}
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/* simply send out max-length number of filler characters to fp */
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static void
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fill (int length, int max, char filler, FILE *fp)
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{
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int count;
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char filltmp[2];
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filltmp[0] = filler;
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filltmp[1] = 0;
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count = max - length;
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while (count-- >= 0)
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{
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fprintf(fp, "%s", filltmp);
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}
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}
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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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*/
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void
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PQdisplayTuples(PGresult *res,
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FILE *fp, /* where to send the output */
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int fillAlign, /* pad the fields with spaces */
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char *fieldSep, /* field separator */
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int printHeader, /* display headers? */
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int quiet
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)
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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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if (fieldSep == NULL)
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fieldSep == DEFAULT_FIELD_SEP;
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if (fp == NULL)
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fp = stdout;
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if (fp == stdout) {
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/* try to pipe to the pager program if possible */
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pager=getenv("PAGER");
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if (pager != NULL) {
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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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/* Get some useful info about the results */
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nFields = PQnfields(res);
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nTuples = PQntuples(res);
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/* Zero the initial field lengths */
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for (j=0 ; j < nFields; j++) {
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fLength[j] = strlen(PQfname(res,j));
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}
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/* Find the max length of each field in the result */
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/* will be somewhat time consuming for very large results */
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if (fillAlign) {
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for (i=0; i < nTuples; i++) {
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for (j=0 ; j < nFields; j++) {
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if (PQgetlength(res,i,j) > fLength[j])
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fLength[j] = PQgetlength(res,i,j);
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}
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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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fputs(PQfname(res,i), fp);
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if (fillAlign)
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fill (strlen (PQfname(res,i)), fLength[i], ' ', fp);
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fputs(fieldSep,fp);
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}
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fprintf(fp, "\n");
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/* Underline the attribute names */
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for (i=0; i < nFields; i++) {
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if (fillAlign)
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fill (0, fLength[i], '-', fp);
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fputs(fieldSep,fp);
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}
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fprintf(fp, "\n");
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}
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/* next, print out the instances */
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for (i=0; i < nTuples; i++) {
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for (j=0 ; j < nFields; j++) {
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fprintf(fp, "%s", PQgetvalue(res,i,j));
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if (fillAlign)
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fill (strlen (PQgetvalue(res,i,j)), fLength[j], ' ', fp);
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fputs(fieldSep,fp);
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}
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fprintf(fp, "\n");
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}
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if (!quiet)
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fprintf (fp, "\nQuery returned %d row%s.\n",PQntuples(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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/*
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* PQprintTuples()
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* print_tuples()
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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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* 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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@ -821,6 +699,295 @@ PQprintTuples(PGresult *res,
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}
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}
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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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* details
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*/
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void
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PQprint(FILE *fout,
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PGresult *res,
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PQprintOpt *po
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)
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{
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int nFields;
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nFields = PQnfields(res);
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if ( nFields > 0 ) { /* only print tuples with at least 1 field. */
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int i,j;
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int nTups;
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int *fieldMax=NULL; /* keep -Wall happy */
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unsigned char *fieldNotNum=NULL; /* keep -Wall happy */
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char **fields=NULL; /*keep -Wall happy */
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char **fieldNames;
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int fieldMaxLen=0;
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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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nTups = PQntuples(res);
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if (!(fieldNames=(char **)calloc(nFields, sizeof (char *))))
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{
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perror("calloc");
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exit(1);
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}
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if (!(fieldNotNum=(unsigned char *)calloc(nFields, 1)))
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{
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perror("calloc");
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exit(1);
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}
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if (!(fieldMax=(int *)calloc(nFields, sizeof(int))))
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{
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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 (j=0; j < nFields; j++)
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{
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int len;
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char *s=(j<numFieldName && po->fieldName[j][0])? po->fieldName[j]: PQfname(res, j);
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fieldNames[j]=s;
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len=s? strlen(s): 0;
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fieldMax[j] = len;
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/*
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if (po->header && len<5)
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len=5;
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*/
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len+=fs_len;
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if (len>fieldMaxLen)
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fieldMaxLen=len;
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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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{
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perror("calloc");
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exit(1);
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}
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} else
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if (po->header && !po->html3)
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{
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if (po->expanded)
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{
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if (po->align)
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fprintf(fout, "%-*s%s Value\n", fieldMaxLen-fs_len, "Field", po->fieldSep);
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else
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fprintf(fout, "%s%sValue\n", "Field", po->fieldSep);
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} else
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{
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int len=0;
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for (j=0; j < nFields; j++)
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{
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char *s=fieldNames[j];
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fputs(s, fout);
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len+=strlen(s)+fs_len;
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if ((j+1)<nFields)
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fputs(po->fieldSep, fout);
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}
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fputc('\n', fout);
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for (len-=fs_len; len--; fputc('-', fout));
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fputc('\n', fout);
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}
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}
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if (po->expanded && po->html3)
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{
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if (po->caption)
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fprintf(fout, "<centre><h2>%s</h2></centre>\n", po->caption);
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else
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fprintf(fout, "<centre><h2>Query retrieved %d tuples * %d fields</h2></centre>\n", nTups, nFields);
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}
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for (i = 0; i < nTups; i++) {
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char buf[8192*2+1];
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if (po->expanded)
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{
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if (po->html3)
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fprintf(fout, "<table %s><caption align=high>%d</caption>\n", po->tableOpt? po->tableOpt: "", i);
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else
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fprintf(fout, "-- RECORD %d --\n", i);
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}
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for (j = 0; j < nFields; j++) {
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char *pval, *p, *o;
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int plen;
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if ((plen=PQgetlength(res,i,j))<1 || !(pval=PQgetvalue(res,i,j)) || !*pval)
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{
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if (po->align || po->expanded)
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continue;
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goto efield;
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}
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for (p=pval, o=buf; *p; *(o++)=*(p++))
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{
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if ((fs_len==1 && (*p==*(po->fieldSep))) || *p=='\\')
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*(o++)='\\';
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if (po->align && !((*p >='0' && *p<='9') || *p=='.' || *p=='E' || *p=='e' || *p==' ' || *p=='-'))
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fieldNotNum[j]=1;
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}
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*o='\0';
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if (!po->expanded && (po->align || po->html3))
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{
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int n=strlen(buf);
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if (n>fieldMax[j])
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fieldMax[j]=n;
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if (!(fields[i*nFields+j]=(char *)malloc(n+1)))
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{
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perror("malloc");
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exit(1);
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}
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strcpy(fields[i*nFields+j], buf);
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} else
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{
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if (po->expanded)
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{
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if (po->html3)
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fprintf(fout, "<tr><td align=left><b>%s</b></td><td align=%s>%s</td></tr>\n",
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fieldNames[j], fieldNotNum[j]? "left": "right", buf);
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else
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{
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if (po->align)
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fprintf(fout, "%-*s%s %s\n", fieldMaxLen-fs_len, fieldNames[j], po->fieldSep, buf);
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else
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fprintf(fout, "%s%s%s\n", fieldNames[j], po->fieldSep, buf);
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}
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}
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else
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{
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if (!po->html3)
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{
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fputs(buf, fout);
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efield:
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if ((j+1)<nFields)
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fputs(po->fieldSep, fout);
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else
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fputc('\n', fout);
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}
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}
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}
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}
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if (po->html3 && po->expanded)
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fputs("</table>\n", fout);
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}
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if (!po->expanded && (po->align || po->html3))
|
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{
|
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if (po->html3)
|
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{
|
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if (po->header)
|
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{
|
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if (po->caption)
|
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fprintf(fout, "<table %s><caption align=high>%s</caption>\n", po->tableOpt? po->tableOpt: "", po->caption);
|
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else
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fprintf(fout, "<table %s><caption align=high>Retrieved %d tuples * %d fields</caption>\n", po->tableOpt? po->tableOpt: "", nTups, nFields);
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} else
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fprintf(fout, "<table %s>", po->tableOpt? po->tableOpt: "");
|
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}
|
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if (po->header)
|
||||
{
|
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if (po->html3)
|
||||
fputs("<tr>", fout);
|
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else
|
||||
{
|
||||
int tot=0;
|
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int n=0;
|
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char *p;
|
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for (; n<nFields; n++)
|
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tot+=fieldMax[n]+fs_len+(po->standard? 2: 0);
|
||||
if (po->standard)
|
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tot+=fs_len*2+2;
|
||||
if (!(p=border=malloc(tot+1)))
|
||||
{
|
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perror("malloc");
|
||||
exit(1);
|
||||
}
|
||||
if (po->standard)
|
||||
{
|
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char *fs=po->fieldSep;
|
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while (*fs++)
|
||||
*p++='+';
|
||||
}
|
||||
for (j=0; j <nFields; j++)
|
||||
{
|
||||
int len;
|
||||
for (len=fieldMax[j] + (po->standard? 2:0) ; len--; *p++='-');
|
||||
if (po->standard || (j+1)<nFields)
|
||||
{
|
||||
char *fs=po->fieldSep;
|
||||
while (*fs++)
|
||||
*p++='+';
|
||||
}
|
||||
}
|
||||
*p='\0';
|
||||
if (po->standard)
|
||||
fprintf(fout, "%s\n", border);
|
||||
}
|
||||
if (po->standard)
|
||||
fputs(po->fieldSep, fout);
|
||||
for (j=0; j < nFields; j++)
|
||||
{
|
||||
char *s=PQfname(res, j);
|
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if (po->html3)
|
||||
{
|
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fprintf(fout, "<th align=%s>%s</th>", fieldNotNum[j]? "left": "right",
|
||||
fieldNames[j]);
|
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} else
|
||||
{
|
||||
int n=strlen(s);
|
||||
if (n>fieldMax[j])
|
||||
fieldMax[j]=n;
|
||||
if (po->standard)
|
||||
fprintf(fout, fieldNotNum[j]? " %-*s ": " %*s ", fieldMax[j], s);
|
||||
else
|
||||
fprintf(fout, fieldNotNum[j]? "%-*s": "%*s", fieldMax[j], s);
|
||||
if (po->standard || (j+1)<nFields)
|
||||
fputs(po->fieldSep, fout);
|
||||
}
|
||||
}
|
||||
if (po->html3)
|
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fputs("</tr>\n", fout);
|
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else
|
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fprintf(fout, "\n%s\n", border);
|
||||
}
|
||||
for (i = 0; i < nTups; i++)
|
||||
{
|
||||
if (po->html3)
|
||||
fputs("<tr>", fout);
|
||||
else
|
||||
if (po->standard)
|
||||
fputs(po->fieldSep, fout);
|
||||
|
||||
for (j = 0; j < nFields; j++)
|
||||
{
|
||||
char *p=fields[i*nFields+j];
|
||||
if (po->html3)
|
||||
fprintf(fout, "<td align=%s>%s</td>", fieldNotNum[j]? "left": "right", p? p: "");
|
||||
|
||||
else
|
||||
{
|
||||
fprintf(fout, fieldNotNum[j]? (po->standard? " %-*s ": "%-*s"): (po->standard? " %*s ": "%*s"), fieldMax[j], p? p: "");
|
||||
if (po->standard || (j+1)<nFields)
|
||||
fputs(po->fieldSep, fout);
|
||||
}
|
||||
if (p)
|
||||
free(p);
|
||||
}
|
||||
if (po->html3)
|
||||
fputs("</tr>", fout);
|
||||
else
|
||||
if (po->standard)
|
||||
fprintf(fout, "\n%s", border);
|
||||
fputc('\n', fout);
|
||||
}
|
||||
free(fields);
|
||||
}
|
||||
free(fieldMax);
|
||||
free(fieldNotNum);
|
||||
free(fieldNames);
|
||||
if (border)
|
||||
free(border);
|
||||
if (po->html3 && !po->expanded)
|
||||
fputs("</table>\n", fout);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/* ----------------
|
||||
* PQfn - Send a function call to the POSTGRES backend.
|
||||
|
||||
@ -6,7 +6,7 @@
|
||||
*
|
||||
* Copyright (c) 1994, Regents of the University of California
|
||||
*
|
||||
* $Id: libpq-fe.h,v 1.1.1.1 1996/07/09 06:22:17 scrappy Exp $
|
||||
* $Id: libpq-fe.h,v 1.2 1996/07/18 05:48:57 scrappy Exp $
|
||||
*
|
||||
*-------------------------------------------------------------------------
|
||||
*/
|
||||
@ -127,6 +127,17 @@ typedef struct pg_result{
|
||||
PGconn* conn;
|
||||
} PGresult;
|
||||
|
||||
typedef struct _PQprintOpt {
|
||||
bool header; /* print output field headers or not */
|
||||
bool align; /* fill align the fields */
|
||||
bool standard; /* old brain dead format */
|
||||
bool html3; /* output html tables */
|
||||
bool expanded; /* expand tables */
|
||||
char *fieldSep; /* field separator */
|
||||
char *tableOpt; /* insert to HTML <table ...> */
|
||||
char *caption; /* HTML <caption> */
|
||||
char **fieldName; /* null terminated array of repalcement field names */
|
||||
} PQprintOpt;
|
||||
|
||||
/* === in fe-connect.c === */
|
||||
/* make a new client connection to the backend */
|
||||
@ -165,13 +176,6 @@ extern char* PQoidStatus(PGresult *res);
|
||||
extern char* PQgetvalue(PGresult *res, int tup_num, int field_num);
|
||||
extern int PQgetlength(PGresult *res, int tup_num, int field_num);
|
||||
extern void PQclear(PGresult* res);
|
||||
/* PQdisplayTuples() is a better version of PQprintTuples() */
|
||||
extern void PQdisplayTuples(PGresult *res,
|
||||
FILE *fp, /* where to send the output */
|
||||
int fillAlign, /* pad the fields with spaces */
|
||||
char *fieldSep, /* field separator */
|
||||
int printHeader, /* display headers? */
|
||||
int quiet);
|
||||
extern void PQprintTuples(PGresult* res,
|
||||
FILE* fout, /* output stream */
|
||||
int printAttName,/* print attribute names or not*/
|
||||
@ -179,6 +183,10 @@ extern void PQprintTuples(PGresult* res,
|
||||
int width /* width of column,
|
||||
if 0, use variable width */
|
||||
);
|
||||
extern void PQprint(FILE* fout, /* output stream */
|
||||
PGresult* res,
|
||||
PQprintOpt *ps /* option structure */
|
||||
);
|
||||
extern PGnotify* PQnotifies(PGconn *conn);
|
||||
extern PGresult* PQfn(PGconn* conn,
|
||||
int fnid,
|
||||
|
||||
Loading…
Reference in New Issue
Block a user