database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-08-08 06:02:22 +03:00
Code Activity

Update pginterface for 6.4. add manual page.

Browse Source
This commit is contained in:
Bruce Momjian
1998-09-11 05:14:08 +00:00
parent 4da5714ced
commit a5d4642578
3 changed files with 119 additions and 23 deletions
Download Patch File Download Diff File Expand all files Collapse all files

61
contrib/pginterface/pginterface.c
View File

@@ -13,6 +13,14 @@
#define NUL '\0'
#ifndef TRUE
#define TRUE 1
#endif
#ifndef FALSE
#define FALSE 0
#endif
/* GLOBAL VARIABLES */
static PGconn *conn;
static PGresult *res = NULL;
@@ -22,8 +30,8 @@ static PGresult *res = NULL;
static int on_error_state = ON_ERROR_STOP;
static in_result_block = false;
static was_get_unset_result = false;
static in_result_block = FALSE;
static was_get_unset_result = FALSE;
/* LOCAL VARIABLES */
static int tuple;
@@ -67,10 +75,10 @@ disconnectdb()
PGresult *
doquery(char *query)
{
if (res != NULL && in_result_block == false && was_get_unset_result == false)
if (res != NULL && in_result_block == FALSE && was_get_unset_result == FALSE)
PQclear(res);
was_get_unset_result = false;
was_get_unset_result = FALSE;
res = PQexec(conn, query);
if (on_error_state == ON_ERROR_STOP &&
@@ -131,7 +139,7 @@ fetch(void *param,...)
**
** fetchwithnulls - returns tuple number (starts at 0),
** or the value END_OF_TUPLES
** Returns true or false into null indicator variables
** Returns TRUE or FALSE into null indicator variables
** NULL pointers are skipped
*/
int
@@ -200,9 +208,14 @@ on_error_continue()
*/
PGresult *get_result()
{
was_get_unset_result = true;
char *cmdstatus = PQcmdStatus(res);
was_get_unset_result = TRUE;
/* we have to store the fetch location somewhere */
memcpy(&res->cmdStatus[CMDSTATUS_LEN-sizeof(tuple)],&tuple, sizeof(tuple));
cmdstatus[0] = NUL;
memcpy(&cmdstatus[1],&tuple, sizeof(tuple));
return res;
}
@@ -213,18 +226,27 @@ PGresult *get_result()
*/
void set_result(PGresult *newres)
{
char *cmdstatus = PQcmdStatus(res);
if (newres == NULL)
halt("set_result called with null result pointer\n");
if (res != NULL && was_get_unset_result == false)
if (in_result_block == false)
if (res != NULL && was_get_unset_result == FALSE)
if (in_result_block == FALSE)
PQclear(res);
else
memcpy(&res->cmdStatus[CMDSTATUS_LEN-sizeof(tuple)], &tuple, sizeof(tuple));
in_result_block = true;
was_get_unset_result = false;
memcpy(&tuple, &newres->cmdStatus[CMDSTATUS_LEN-sizeof(tuple)], sizeof(tuple));
{
cmdstatus[0] = NUL;
memcpy(&cmdstatus[1], &tuple, sizeof(tuple));
}
in_result_block = TRUE;
was_get_unset_result = FALSE;
cmdstatus = PQcmdStatus(newres);
memcpy(&tuple, &cmdstatus[1], sizeof(tuple));
res = newres;
}
@@ -236,15 +258,18 @@ void set_result(PGresult *newres)
*/
void unset_result(PGresult *oldres)
{
char *cmdstatus = PQcmdStatus(oldres);
if (oldres == NULL)
halt("unset_result called with null result pointer\n");
if (in_result_block == false)
if (in_result_block == FALSE)
halt("Unset of result without being set.\n");
was_get_unset_result = true;
memcpy(&oldres->cmdStatus[CMDSTATUS_LEN-sizeof(tuple)], &tuple, sizeof(tuple));
in_result_block = false;
was_get_unset_result = TRUE;
cmdstatus[0] = NUL;
memcpy(&cmdstatus[1], &tuple, sizeof(tuple));
in_result_block = FALSE;
}
/*