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

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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69
src/backend/utils/adt/varchar.c
View File

@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/adt/varchar.c,v 1.31 1998/05/09 22:42:07 thomas Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/varchar.c,v 1.32 1998/05/29 13:33:24 thomas Exp $
*
*-------------------------------------------------------------------------
*/
@ -201,8 +201,7 @@ int32
bpchar_char(char *s)
{
return ((int32) *VARDATA(s));
} /* char_bpchar() */
} /* bpchar_char() */
/* char_bpchar()
* Convert char to bpchar(1).
@ -221,6 +220,70 @@ char_bpchar(int32 c)
} /* char_bpchar() */
/* bpchar_name()
* Converts a bpchar() type to a NameData type.
*/
NameData *
bpchar_name(char *s)
{
NameData *result;
int len;
if (s == NULL)
return (NULL);
len = VARSIZE(s) - VARHDRSZ;
if (len > NAMEDATALEN) len = NAMEDATALEN;
while (len > 0) {
if (*(VARDATA(s)+len-1) != ' ') break;
len--;
}
#ifdef STRINGDEBUG
printf("bpchar- convert string length %d (%d) ->%d\n",
VARSIZE(s)-VARHDRSZ, VARSIZE(s), len);
#endif
result = (NameData *) palloc(NAMEDATALEN);
StrNCpy(result->data, VARDATA(s), NAMEDATALEN);
/* now null pad to full length... */
while (len < NAMEDATALEN) {
*(result->data + len) = '\0';
len++;
}
return (result);
} /* bpchar_name() */
/* name_bpchar()
* Converts a NameData type to a bpchar type.
*/
char *
name_bpchar(NameData *s)
{
char *result;
int len;
if (s == NULL)
return (NULL);
len = strlen(s->data);
#ifdef STRINGDEBUG
printf("bpchar- convert string length %d (%d) ->%d\n",
VARSIZE(s)-VARHDRSZ, VARSIZE(s), len);
#endif
result = (char *) palloc(VARHDRSZ + len);
strncpy(VARDATA(result), s->data, len);
VARSIZE(result) = len + VARHDRSZ;
return (result);
} /* name_bpchar() */
/*****************************************************************************
* varchar - varchar() *
*****************************************************************************/

61
src/backend/utils/adt/varlena.c
View File

@ -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() */