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Add conversion functions to and from the "name" data type.

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This commit is contained in:
Thomas G. Lockhart
1998-05-29 13:33:58 +00:00
parent e8cbf3a79c
commit 457b6efa43
2 changed files with 126 additions and 4 deletions
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61
src/backend/utils/adt/varlena.c
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@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/adt/varlena.c,v 1.34 1998/05/09 22:42:07 thomas Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/varlena.c,v 1.35 1998/05/29 13:33:58 thomas Exp $
*
*-------------------------------------------------------------------------
*/
@ -759,3 +759,62 @@ byteaSetBit(text *v, int32 n, int32 newBit)
return (res);
}
/* text_name()
* Converts a text() type to a NameData type.
*/
NameData *
text_name(text *s)
{
NameData *result;
int len;
if (s == NULL)
return (NULL);
len = VARSIZE(s) - VARHDRSZ;
if (len > NAMEDATALEN) len = NAMEDATALEN;
#ifdef STRINGDEBUG
printf("text- convert string length %d (%d) ->%d\n",
VARSIZE(s)-VARHDRSZ, VARSIZE(s), len);
#endif
result = palloc(NAMEDATALEN);
StrNCpy(result->data, VARDATA(s), NAMEDATALEN);
/* now null pad to full length... */
while (len < NAMEDATALEN) {
*(result->data + len) = '\0';
len++;
}
return (result);
} /* text_name() */
/* name_text()
* Converts a NameData type to a text type.
*/
text *
name_text(NameData *s)
{
text *result;
int len;
if (s == NULL)
return (NULL);
len = strlen(s->data);
#ifdef STRINGDEBUG
printf("text- convert string length %d (%d) ->%d\n",
VARSIZE(s)-VARHDRSZ, VARSIZE(s), len);
#endif
result = palloc(VARHDRSZ + len);
strncpy(VARDATA(result), s->data, len);
VARSIZE(result) = len + VARHDRSZ;
return (result);
} /* name_text() */