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postgresql/doc/TODO.detail/tcl_arrays

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From owner-pgsql-patches@hub.org Wed Oct 14 17:31:26 1998
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From: Massimo Dal Zotto <dz@cs.unitn.it>
Message-Id: <199810142056.WAA00489@nikita.wizard.net>
Subject: [PATCHES] TCL_ARRAYS
To: pgsql-patches@postgreSQL.org (Pgsql Patches)
Date: Wed, 14 Oct 1998 22:56:58 +0200 (MET DST)
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Hi,
I have written this patch which fixes some problems with TCL_ARRAYS.
The new array code uses a temporary buffer and is disabled by default
because it depends on contrib/string-io which most of you don't use.
This raises once again the problem of backslashes/escapes and various
ambiguities in pgsql output. I hope this will be solved in 6.5.
*** src/interfaces/libpgtcl/pgtclCmds.c.orig Mon Sep 21 09:00:19 1998
--- src/interfaces/libpgtcl/pgtclCmds.c Wed Oct 14 15:32:21 1998
***************
*** 602,616 ****
{
for (i = 0; i < PQnfields(result); i++)
{
sprintf(nameBuffer, "%d,%.200s", tupno, PQfname(result, i));
if (Tcl_SetVar2(interp, arrVar, nameBuffer,
! #ifdef TCL_ARRAYS
! tcl_value(PQgetvalue(result, tupno, i)),
#else
PQgetvalue(result, tupno, i),
- #endif
TCL_LEAVE_ERR_MSG) == NULL)
return TCL_ERROR;
}
}
Tcl_AppendResult(interp, arrVar, 0);
--- 602,624 ----
{
for (i = 0; i < PQnfields(result); i++)
{
+ #ifdef TCL_ARRAYS
+ char *buff = strdup(PQgetvalue(result, tupno, i));
sprintf(nameBuffer, "%d,%.200s", tupno, PQfname(result, i));
if (Tcl_SetVar2(interp, arrVar, nameBuffer,
! tcl_value(buff),
! TCL_LEAVE_ERR_MSG) == NULL) {
! free(buff);
! return TCL_ERROR;
! }
! free(buff);
#else
+ sprintf(nameBuffer, "%d,%.200s", tupno, PQfname(result, i));
+ if (Tcl_SetVar2(interp, arrVar, nameBuffer,
PQgetvalue(result, tupno, i),
TCL_LEAVE_ERR_MSG) == NULL)
return TCL_ERROR;
+ #endif
}
}
Tcl_AppendResult(interp, arrVar, 0);
***************
*** 636,643 ****
*/
for (tupno = 0; tupno < PQntuples(result); tupno++)
{
const char *field0 = PQgetvalue(result, tupno, 0);
! char * workspace = malloc(strlen(field0) + strlen(appendstr) + 210);
for (i = 1; i < PQnfields(result); i++)
{
--- 644,674 ----
*/
for (tupno = 0; tupno < PQntuples(result); tupno++)
{
+ #ifdef TCL_ARRAYS
+ char *buff = strdup(PQgetvalue(result, tupno, 0));
+ const char *field0 = tcl_value(buff);
+ char *workspace = malloc(strlen(field0) + 210 + strlen(appendstr));
+
+ for (i = 1; i < PQnfields(result); i++)
+ {
+ free(buff);
+ buff = strdup(PQgetvalue(result, tupno, i));
+ sprintf(workspace, "%s,%.200s%s", field0, PQfname(result,i),
+ appendstr);
+ if (Tcl_SetVar2(interp, arrVar, workspace,
+ tcl_value(buff),
+ TCL_LEAVE_ERR_MSG) == NULL)
+ {
+ free(buff);
+ free(workspace);
+ return TCL_ERROR;
+ }
+ }
+ free(buff);
+ free(workspace);
+ #else
const char *field0 = PQgetvalue(result, tupno, 0);
! char *workspace = malloc(strlen(field0) + 210 + strlen(appendstr));
for (i = 1; i < PQnfields(result); i++)
{
***************
*** 652,657 ****
--- 683,689 ----
}
}
free(workspace);
+ #endif
}
Tcl_AppendResult(interp, arrVar, 0);
return TCL_OK;
***************
*** 669,676 ****
--- 701,716 ----
Tcl_AppendResult(interp, "argument to getTuple cannot exceed number of tuples - 1", 0);
return TCL_ERROR;
}
+ #ifdef TCL_ARRAYS
+ for (i = 0; i < PQnfields(result); i++) {
+ char *buff = strdup(PQgetvalue(result, tupno, i));
+ Tcl_AppendElement(interp, tcl_value(buff));
+ free(buff);
+ }
+ #else
for (i = 0; i < PQnfields(result); i++)
Tcl_AppendElement(interp, PQgetvalue(result, tupno, i));
+ #endif
return TCL_OK;
}
else if (strcmp(opt, "-tupleArray") == 0)
***************
*** 688,697 ****
--- 728,748 ----
}
for (i = 0; i < PQnfields(result); i++)
{
+ #ifdef TCL_ARRAYS
+ char *buff = strdup(PQgetvalue(result, tupno, i));
+ if (Tcl_SetVar2(interp, argv[4], PQfname(result, i),
+ tcl_value(buff),
+ TCL_LEAVE_ERR_MSG) == NULL) {
+ free(buff);
+ return TCL_ERROR;
+ }
+ free(buff);
+ #else
if (Tcl_SetVar2(interp, argv[4], PQfname(result, i),
PQgetvalue(result, tupno, i),
TCL_LEAVE_ERR_MSG) == NULL)
return TCL_ERROR;
+ #endif
}
return TCL_OK;
}
***************
*** 1303,1310 ****
sprintf(buffer, "%d", tupno);
Tcl_SetVar2(interp, argv[3], ".tupno", buffer, 0);
for (column = 0; column < ncols; column++)
! Tcl_SetVar2(interp, argv[3], info[column].cname, PQgetvalue(result, tupno, column), 0);
Tcl_SetVar2(interp, argv[3], ".command", "update", 0);
--- 1354,1371 ----
sprintf(buffer, "%d", tupno);
Tcl_SetVar2(interp, argv[3], ".tupno", buffer, 0);
+ #ifdef TCL_ARRAYS
+ for (column = 0; column < ncols; column++) {
+ char *buff = strdup(PQgetvalue(result, tupno, column));
+ Tcl_SetVar2(interp, argv[3], info[column].cname,
+ tcl_value(buff), 0);
+ free(buff);
+ }
+ #else
for (column = 0; column < ncols; column++)
! Tcl_SetVar2(interp, argv[3], info[column].cname,
! PQgetvalue(result, tupno, column), 0);
! #endif
Tcl_SetVar2(interp, argv[3], ".command", "update", 0);
*** src/include/config.h.in.orig Wed Aug 26 09:01:16 1998
--- src/include/config.h.in Wed Oct 14 22:44:00 1998
***************
*** 312,318 ****
* of postgres C-like arrays, for example {{"a1" "a2"} {"b1" "b2"}} instead
* of {{"a1","a2"},{"b1","b2"}}.
*/
! #define TCL_ARRAYS
/*
* The following flag allows limiting the number of rows returned by a query.
--- 312,318 ----
* of postgres C-like arrays, for example {{"a1" "a2"} {"b1" "b2"}} instead
* of {{"a1","a2"},{"b1","b2"}}.
*/
! /* #define TCL_ARRAYS */
/*
* The following flag allows limiting the number of rows returned by a query.
--
Massimo Dal Zotto
+----------------------------------------------------------------------+
| Massimo Dal Zotto email: dz@cs.unitn.it |
| Via Marconi, 141 phone: ++39-461-534251 |
| 38057 Pergine Valsugana (TN) www: http://www.cs.unitn.it/~dz/ |
| Italy pgp: finger dz@tango.cs.unitn.it |
+----------------------------------------------------------------------+
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