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Avoid using sprintf() for a simple octal conversion in PQescapeByteaInternal.

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Improves performance, per suggestion from Rudolf Leitgeb (bug #4414).
The backend did this right already, but not libpq.
This commit is contained in:
Tom Lane
2008-09-10 17:01:17 +00:00
parent 6c5cf22edd
commit 8208fbb4ce
1 changed files with 7 additions and 3 deletions
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10
src/interfaces/libpq/fe-exec.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/interfaces/libpq/fe-exec.c,v 1.194 2008/01/01 19:46:00 momjian Exp $
* $PostgreSQL: pgsql/src/interfaces/libpq/fe-exec.c,v 1.194.2.1 2008/09/10 17:01:17 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -2760,10 +2760,14 @@ PQescapeByteaInternal(PGconn *conn,
{
if (*vp < 0x20 || *vp > 0x7e)
{
int val = *vp;
if (!std_strings)
*rp++ = '\\';
(void) sprintf((char *) rp, "\\%03o", *vp);
rp += 4;
*rp++ = '\\';
*rp++ = (val >> 6) + '0';
*rp++ = ((val >> 3) & 07) + '0';
*rp++ = (val & 07) + '0';
}
else if (*vp == '\'')
{