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bpchar, varchar, bytea, numeric are toastable --- if you initdb, which

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I did not force.  I marked numeric as compressable-but-not-move-off-able,
partly to test that storage mode and partly because I've got doubts
that numerics are large enough to need external storage.
This commit is contained in:
Tom Lane
2000-07-29 03:26:51 +00:00
parent 20f6a1e562
commit 1ebe1da296
10 changed files with 825 additions and 851 deletions
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72
src/backend/utils/adt/varlena.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/adt/varlena.c,v 1.64 2000/07/12 02:37:19 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/varlena.c,v 1.65 2000/07/29 03:26:42 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -41,18 +41,17 @@ static int text_cmp(text *arg1, text *arg2);
* The input is scaned twice.
* The error checking of input is minimal.
*/
bytea *
byteain(char *inputText)
Datum
byteain(PG_FUNCTION_ARGS)
{
char *inputText = PG_GETARG_CSTRING(0);
char *tp;
char *rp;
int byte;
bytea *result;
if (inputText == NULL)
elog(ERROR, "Bad input string for type bytea");
for (byte = 0, tp = inputText; *tp != '\0'; byte++)
{
if (*tp++ == '\\')
{
if (*tp == '\\')
@ -62,12 +61,16 @@ byteain(char *inputText)
!isdigit((int) *tp++))
elog(ERROR, "Bad input string for type bytea");
}
tp = inputText;
}
byte += VARHDRSZ;
result = (bytea *) palloc(byte);
result->vl_len = byte; /* varlena? */
result->vl_len = byte; /* set varlena length */
tp = inputText;
rp = result->vl_dat;
while (*tp != '\0')
{
if (*tp != '\\' || *++tp == '\\')
*rp++ = *tp++;
else
@ -78,7 +81,9 @@ byteain(char *inputText)
byte <<= 3;
*rp++ = byte + VAL(*tp++);
}
return result;
}
PG_RETURN_BYTEA_P(result);
}
/*
@ -89,9 +94,10 @@ byteain(char *inputText)
*
* NULL vlena should be an error--returning string with NULL for now.
*/
char *
byteaout(bytea *vlena)
Datum
byteaout(PG_FUNCTION_ARGS)
{
bytea *vlena = PG_GETARG_BYTEA_P(0);
char *result;
char *vp;
char *rp;
@ -99,47 +105,42 @@ byteaout(bytea *vlena)
int i;
int len;
if (vlena == NULL)
{
result = (char *) palloc(2);
result[0] = '-';
result[1] = '\0';
return result;
}
vp = vlena->vl_dat;
len = 1; /* empty string has 1 char */
vp = vlena->vl_dat;
for (i = vlena->vl_len - VARHDRSZ; i != 0; i--, vp++)
{
if (*vp == '\\')
len += 2;
else if (isascii((int) *vp) && isprint((int) *vp))
len++;
else
len += VARHDRSZ;
len += 4;
}
rp = result = (char *) palloc(len);
vp = vlena->vl_dat;
for (i = vlena->vl_len - VARHDRSZ; i != 0; i--)
for (i = vlena->vl_len - VARHDRSZ; i != 0; i--, vp++)
{
if (*vp == '\\')
{
vp++;
*rp++ = '\\';
*rp++ = '\\';
}
else if (isascii((int) *vp) && isprint((int) *vp))
*rp++ = *vp++;
*rp++ = *vp;
else
{
val = *vp++;
*rp = '\\';
rp += 3;
*rp-- = DIG(val & 07);
val = *vp;
rp[0] = '\\';
rp[3] = DIG(val & 07);
val >>= 3;
*rp-- = DIG(val & 07);
rp[2] = DIG(val & 07);
val >>= 3;
*rp = DIG(val & 03);
rp += 3;
rp[1] = DIG(val & 03);
rp += 4;
}
}
*rp = '\0';
return result;
PG_RETURN_CSTRING(result);
}
@ -663,13 +664,12 @@ text_smaller(PG_FUNCTION_ARGS)
* get the number of bytes contained in an instance of type 'bytea'
*-------------------------------------------------------------
*/
int32
byteaoctetlen(bytea *v)
Datum
byteaoctetlen(PG_FUNCTION_ARGS)
{
if (!PointerIsValid(v))
return 0;
bytea *v = PG_GETARG_BYTEA_P(0);
return VARSIZE(v) - VARHDRSZ;
PG_RETURN_INT32(VARSIZE(v) - VARHDRSZ);
}
/*-------------------------------------------------------------