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In the spirit of TODO item

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* Add use of 'const' for varibles in source tree
(which is misspelled, btw.)
I went through the front-end libpq code and did so. This affects in
particular the various accessor functions (such as PQdb() and
PQgetvalue()) as well as, by necessity, the internal helpers they use.

I have been really thorough in that regard, perhaps some people will find
it annoying that things like
char * foo = PQgetvalue(res, 0, 0)
will generate a warning. On the other hand it _should_ generate one. This
is no real compatibility break, although a few clients will have to be
fixed to suppress warnings. (Which again would be in the spirit of the
above TODO.)

In addition I replaced some int's by size_t's and removed some warnings
(and generated some new ones -- grmpf!). Also I rewrote PQoidStatus (so it
actually honors the const!) and supplied a new function PQoidValue that
returns a proper Oid type. This is only front-end stuff, none of the
communicaton stuff was touched.


The psql patch also adds some new consts to honor the new libpq situation,
as well as fixes a fatal condition that resulted when using the -V
(--version) option and there is no database listening.


So, to summarize, the psql you should definitely put in (with or without
the libpq). If you think I went too far with the const-mania in libpq, let
me know and I'll make adjustments. If you approve it, I will also update
the docs.

        -Peter

--
Peter Eisentraut                  Sernanders vaeg 10:115
This commit is contained in:
Bruce Momjian
1999-11-11 00:10:14 +00:00
parent c6c60302ba
commit 2a24ec6f16
12 changed files with 266 additions and 260 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
src/interfaces/libpq/fe-misc.c
View File

@ -24,7 +24,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/interfaces/libpq/fe-misc.c,v 1.31 1999/09/27 03:13:16 momjian Exp $
* $Header: /cvsroot/pgsql/src/interfaces/libpq/fe-misc.c,v 1.32 1999/11/11 00:10:14 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -82,9 +82,9 @@ pqGetc(char *result, PGconn *conn)
with buffering
*/
static int
pqPutBytes(const char *s, int nbytes, PGconn *conn)
pqPutBytes(const char *s, size_t nbytes, PGconn *conn)
{
int avail = conn->outBufSize - conn->outCount;
size_t avail = Max(conn->outBufSize - conn->outCount, 0);
while (nbytes > avail)
{
@ -157,7 +157,7 @@ pqPuts(const char *s, PGconn *conn)
get a string of exactly len bytes in buffer s, no null termination
*/
int
pqGetnchar(char *s, int len, PGconn *conn)
pqGetnchar(char *s, size_t len, PGconn *conn)
{
if (len < 0 || len > conn->inEnd - conn->inCursor)
return EOF;
@ -168,7 +168,7 @@ pqGetnchar(char *s, int len, PGconn *conn)
conn->inCursor += len;
if (conn->Pfdebug)
fprintf(conn->Pfdebug, "From backend (%d)> %.*s\n", len, len, s);
fprintf(conn->Pfdebug, "From backend (%d)> %.*s\n", len, (int)len, s);
return 0;
}
@ -178,13 +178,13 @@ pqGetnchar(char *s, int len, PGconn *conn)
send a string of exactly len bytes, no null termination needed
*/
int
pqPutnchar(const char *s, int len, PGconn *conn)
pqPutnchar(const char *s, size_t len, PGconn *conn)
{
if (pqPutBytes(s, len, conn))
return EOF;
if (conn->Pfdebug)
fprintf(conn->Pfdebug, "To backend> %.*s\n", len, s);
fprintf(conn->Pfdebug, "To backend> %.*s\n", (int)len, s);
return 0;
}
@ -195,7 +195,7 @@ pqPutnchar(const char *s, int len, PGconn *conn)
to local byte order
*/
int
pqGetInt(int *result, int bytes, PGconn *conn)
pqGetInt(int *result, size_t bytes, PGconn *conn)
{
uint16 tmp2;
uint32 tmp4;
@ -236,7 +236,7 @@ pqGetInt(int *result, int bytes, PGconn *conn)
to network byte order.
*/
int
pqPutInt(int value, int bytes, PGconn *conn)
pqPutInt(int value, size_t bytes, PGconn *conn)
{
uint16 tmp2;
uint32 tmp4;