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oracle_compat.c fixed for function overloading...

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By: From: Edmund Mergl <mergl@nadia.s.bawue.de>
This commit is contained in:
Marc G. Fournier
1997-03-16 20:40:52 +00:00
parent 5ea01d62ef
commit 4b4ac7c159
2 changed files with 108 additions and 341 deletions
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488
src/backend/utils/adt/oracle_compat.c
View File

@ -1,7 +1,7 @@
/* /*
* Edmund Mergl <E.Mergl@bawue.de> * Edmund Mergl <E.Mergl@bawue.de>
* *
* $Id: oracle_compat.c,v 1.4 1997/03/16 01:17:49 scrappy Exp $ * $Id: oracle_compat.c,v 1.5 1997/03/16 20:40:39 scrappy Exp $
* *
*/ */
@ -10,13 +10,24 @@
#include "postgres.h" #include "postgres.h"
text *lower(text *string);
text *upper(text *string);
text *initcap(text *string);
text *lpad(text *string1, int4 len, text *string2);
text *rpad(text *string1, int4 len, text *string2);
text *ltrim(text *string, text *set);
text *rtrim(text *string, text *set);
text *substr(text *string, int4 m, int4 n);
text *translate(text *string, char from, char to);
/******************************************************************** /********************************************************************
* *
* LOWER * lower
* *
* Syntax: * Syntax:
* *
* text *LOWER(text *string) * text *lower(text *string)
* *
* Purpose: * Purpose:
* *
@ -25,7 +36,7 @@
********************************************************************/ ********************************************************************/
text * text *
LOWER(text *string) lower(text *string)
{ {
text *ret; text *ret;
char *ptr, *ptr_ret; char *ptr, *ptr_ret;
@ -37,7 +48,7 @@ LOWER(text *string)
return string; return string;
} }
ret = (text *)malloc(VARSIZE(string)); ret = (text *)palloc(VARSIZE(string));
VARSIZE(ret) = VARSIZE(string); VARSIZE(ret) = VARSIZE(string);
ptr = VARDATA(string); ptr = VARDATA(string);
@ -53,11 +64,11 @@ LOWER(text *string)
/******************************************************************** /********************************************************************
* *
* UPPER * upper
* *
* Syntax: * Syntax:
* *
* text *UPPER(text *string) * text *upper(text *string)
* *
* Purpose: * Purpose:
* *
@ -66,7 +77,7 @@ LOWER(text *string)
********************************************************************/ ********************************************************************/
text * text *
UPPER(text *string) upper(text *string)
{ {
text *ret; text *ret;
char *ptr, *ptr_ret; char *ptr, *ptr_ret;
@ -78,7 +89,7 @@ UPPER(text *string)
return string; return string;
} }
ret = (text *)malloc(VARSIZE(string)); ret = (text *)palloc(VARSIZE(string));
VARSIZE(ret) = VARSIZE(string); VARSIZE(ret) = VARSIZE(string);
ptr = VARDATA(string); ptr = VARDATA(string);
@ -94,11 +105,11 @@ UPPER(text *string)
/******************************************************************** /********************************************************************
* *
* INITCAP * initcap
* *
* Syntax: * Syntax:
* *
* text *INITCAP(text *string) * text *initcap(text *string)
* *
* Purpose: * Purpose:
* *
@ -109,7 +120,7 @@ UPPER(text *string)
********************************************************************/ ********************************************************************/
text * text *
INITCAP(text *string) initcap(text *string)
{ {
text *ret; text *ret;
char *ptr, *ptr_ret; char *ptr, *ptr_ret;
@ -121,7 +132,7 @@ INITCAP(text *string)
return string; return string;
} }
ret = (text *)malloc(VARSIZE(string)); ret = (text *)palloc(VARSIZE(string));
VARSIZE(ret) = VARSIZE(string); VARSIZE(ret) = VARSIZE(string);
ptr = VARDATA(string); ptr = VARDATA(string);
@ -144,11 +155,11 @@ INITCAP(text *string)
/******************************************************************** /********************************************************************
* *
* LPAD * lpad
* *
* Syntax: * Syntax:
* *
* text *LPAD(text *string1, int4 len, text *string2) * text *lpad(text *string1, int4 len, text *string2)
* *
* Purpose: * Purpose:
* *
@ -158,7 +169,7 @@ INITCAP(text *string)
********************************************************************/ ********************************************************************/
text * text *
LPAD(text *string1, int4 len, text *string2) lpad(text *string1, int4 len, text *string2)
{ {
text *ret; text *ret;
char *ptr1, *ptr2, *ptr_ret; char *ptr1, *ptr2, *ptr_ret;
@ -170,7 +181,7 @@ LPAD(text *string1, int4 len, text *string2)
return string1; return string1;
} }
ret = (text *)malloc(VARHDRSZ + len); ret = (text *)palloc(VARHDRSZ + len);
VARSIZE(ret) = VARHDRSZ + len; VARSIZE(ret) = VARHDRSZ + len;
ptr2 = VARDATA(string2); ptr2 = VARDATA(string2);
@ -192,350 +203,35 @@ LPAD(text *string1, int4 len, text *string2)
} }
/********************************************************************
*
* RPAD
*
* Syntax:
*
* text *RPAD(text *string1, int4 len, text *string2)
*
* Purpose:
*
* Returns string1, right-padded to length len with the sequence of
* characters in string2.
*
********************************************************************/
text *
RPAD(text *string1, int4 len, text *string2)
{
text *ret;
char *ptr1, *ptr2, *ptr_ret;
int m, n;
m = len - VARSIZE(string1) + VARHDRSZ;
if (m <= 0 || (VARSIZE(string2) - VARHDRSZ) <= 0) {
return string1;
}
ret = (text *)malloc(VARHDRSZ + len);
VARSIZE(ret) = VARHDRSZ + len;
n = VARSIZE(string1) - VARHDRSZ;
ptr1 = VARDATA(string1);
ptr_ret = VARDATA(ret);
while (n--) {
*ptr_ret++ = *ptr1++;
}
ptr2 = VARDATA(string2);
while (m--) {
*ptr_ret++ = *ptr2;
ptr2 = ptr2 == VARDATA(string2) + VARSIZE(string2) - VARHDRSZ - 1 ? VARDATA(string2) : ++ptr2;
}
return ret;
}
/********************************************************************
*
* LTRIM
*
* Syntax:
*
* text *LTRIM(text *string, text *set)
*
* Purpose:
*
* Returns string with initial characters removed up to the first
* character not in set.
*
********************************************************************/
text *
LTRIM(text *string, text *set)
{
text *ret;
char *ptr, *ptr2, *end2, *ptr_ret;
int m;
m = VARSIZE(string) - VARHDRSZ;
if (m <= 0 || VARSIZE(set) - VARHDRSZ <= 0) {
return string;
}
ptr = VARDATA(string);
ptr2 = VARDATA(set);
end2 = VARDATA(set) + VARSIZE(set) - VARHDRSZ - 1;
while (m--) {
while (ptr2 <= end2) {
if (*ptr == *ptr2) {
break;
}
++ptr2;
}
if (*ptr != *ptr2) {
break;
}
ptr++;
ptr2 = VARDATA(set);
}
++m;
ret = (text *)malloc(VARHDRSZ + m);
VARSIZE(ret) = VARHDRSZ + m;
ptr_ret = VARDATA(ret);
while (m--) {
*ptr_ret++ = *ptr++;
}
return ret;
}
/********************************************************************
*
* RTRIM
*
* Syntax:
*
* text *RTRIM(text *string, text *set)
*
* Purpose:
*
* Returns string with final characters removed after the last
* character not in set.
*
********************************************************************/
text *
RTRIM(text *string, text *set)
{
text *ret;
char *ptr, *ptr2, *end2, *ptr_ret;
int m;
m = VARSIZE(string) - VARHDRSZ;
if (m <= 0 || VARSIZE(set) - VARHDRSZ <= 0) {
return string;
}
ptr = VARDATA(string) + VARSIZE(string) - VARHDRSZ - 1;
ptr2 = VARDATA(set);
end2 = VARDATA(set) + VARSIZE(set) - VARHDRSZ - 1;
while (m--) {
while (ptr2 <= end2) {
if (*ptr == *ptr2) {
break;
}
++ptr2;
}
if (*ptr != *ptr2) {
break;
}
--ptr;
ptr2 = VARDATA(set);
}
++m;
ret = (text *)malloc(VARHDRSZ + m);
VARSIZE(ret) = VARHDRSZ + m;
ptr_ret = VARDATA(ret) + m - 1;
while (m--) {
*ptr_ret-- = *ptr--;
}
return ret;
}
/********************************************************************
*
* SUBSTR
*
* Syntax:
*
* text *SUBSTR(text *string, int4 m, int4 n)
*
* Purpose:
*
* Returns a portion of string, beginning at character m, n
* characters long. The first position of string is 1.
*
********************************************************************/
text *
SUBSTR(text *string, int4 m, int4 n)
{
text *ret;
char *ptr, *ptr_ret;
int len;
len = VARSIZE(string) - VARHDRSZ - m;
if (m <= 0 || n <= 0 || len <= 0) {
return string;
}
len = len + 1 < n ? len + 1 : n;
ret = (text *)malloc(VARHDRSZ + len);
VARSIZE(ret) = VARHDRSZ + len;
ptr = VARDATA(string) + m - 1;
ptr_ret = VARDATA(ret);
while (len--) {
*ptr_ret++ = *ptr++;
}
return ret;
}
/********************************************************************
*
* TRANSLATE
*
* Syntax:
*
* text *TRANSLATE(text *string, char from, char to)
*
* Purpose:
*
* Returns string after replacing all occurences of from with
* the corresponding character in to. TRANSLATE will not remove
* characters.
*
********************************************************************/
text *
TRANSLATE(text *string, char from, char to)
{
text *ret;
char *ptr, *ptr_ret;
int m;
m = VARSIZE(string) - VARHDRSZ;
if (m <= 0) {
return string;
}
ret = (text *)malloc(VARSIZE(string));
VARSIZE(ret) = VARSIZE(string);
ptr = VARDATA(string);
ptr_ret = VARDATA(ret);
while (m--) {
*ptr_ret++ = *ptr == from ? to : *ptr;
ptr++;
}
return ret;
}
#if 0
/********************************************************************
*
* Functions in lower case are the equivalents with the last
* parameter beeing set to a reasonable default.
*
********************************************************************/
/********************************************************************
*
* lpad
*
* Syntax:
*
* text *lpad(text *string1, int4 len)
*
* Purpose:
*
* Returns string1, left-padded to length len with blanks.
*
********************************************************************/
text *
lpad(text *string1, int4 len)
{
text *ret;
char *ptr1, *ptr_ret;
int m, n;
m = len - VARSIZE(string1) + VARHDRSZ;
if (m <= 0) {
return string1;
}
ret = (text *)malloc(VARHDRSZ + len);
VARSIZE(ret) = VARHDRSZ + len;
ptr_ret = VARDATA(ret);
while (m--) {
*ptr_ret++ = ' ';
}
n = VARSIZE(string1) - VARHDRSZ;
ptr1 = VARDATA(string1);
while (n--) {
*ptr_ret++ = *ptr1++;
}
return ret;
}
/******************************************************************** /********************************************************************
* *
* rpad * rpad
* *
* Syntax: * Syntax:
* *
* text *rpad(text *string1, int4 len) * text *rpad(text *string1, int4 len, text *string2)
* *
* Purpose: * Purpose:
* *
* Returns string1, right-padded to length len with blanks. * Returns string1, right-padded to length len with the sequence of
* characters in string2.
* *
********************************************************************/ ********************************************************************/
text * text *
rpad(text *string1, int4 len) rpad(text *string1, int4 len, text *string2)
{ {
text *ret; text *ret;
char *ptr1, *ptr_ret; char *ptr1, *ptr2, *ptr_ret;
int m, n; int m, n;
m = len - VARSIZE(string1) + VARHDRSZ; m = len - VARSIZE(string1) + VARHDRSZ;
if (m <= 0) { if (m <= 0 || (VARSIZE(string2) - VARHDRSZ) <= 0) {
return string1; return string1;
} }
ret = (text *)malloc(VARHDRSZ + len); ret = (text *)palloc(VARHDRSZ + len);
VARSIZE(ret) = VARHDRSZ + len; VARSIZE(ret) = VARHDRSZ + len;
n = VARSIZE(string1) - VARHDRSZ; n = VARSIZE(string1) - VARHDRSZ;
@ -546,8 +242,11 @@ rpad(text *string1, int4 len)
*ptr_ret++ = *ptr1++; *ptr_ret++ = *ptr1++;
} }
ptr2 = VARDATA(string2);
while (m--) { while (m--) {
*ptr_ret++ = ' '; *ptr_ret++ = *ptr2;
ptr2 = ptr2 == VARDATA(string2) + VARSIZE(string2) - VARHDRSZ - 1 ? VARDATA(string2) : ++ptr2;
} }
return ret; return ret;
@ -560,39 +259,49 @@ rpad(text *string1, int4 len)
* *
* Syntax: * Syntax:
* *
* text *ltrim(text *string) * text *ltrim(text *string, text *set)
* *
* Purpose: * Purpose:
* *
* Returns string with initial blanks removed. * Returns string with initial characters removed up to the first
* character not in set.
* *
********************************************************************/ ********************************************************************/
text * text *
ltrim(text *string) ltrim(text *string, text *set)
{ {
text *ret; text *ret;
char *ptr, *ptr_ret; char *ptr, *ptr2, *end2, *ptr_ret;
int m; int m;
m = VARSIZE(string) - VARHDRSZ; m = VARSIZE(string) - VARHDRSZ;
if (m <= 0) { if (m <= 0 || VARSIZE(set) - VARHDRSZ <= 0) {
return string; return string;
} }
ptr = VARDATA(string); ptr = VARDATA(string);
ptr2 = VARDATA(set);
end2 = VARDATA(set) + VARSIZE(set) - VARHDRSZ - 1;
while (m--) { while (m--) {
if (*ptr != ' ') { while (ptr2 <= end2) {
if (*ptr == *ptr2) {
break; break;
} }
++ptr; ++ptr2;
}
if (*ptr != *ptr2) {
break;
}
ptr++;
ptr2 = VARDATA(set);
} }
++m; ++m;
ret = (text *)malloc(VARHDRSZ + m); ret = (text *)palloc(VARHDRSZ + m);
VARSIZE(ret) = VARHDRSZ + m; VARSIZE(ret) = VARHDRSZ + m;
ptr_ret = VARDATA(ret); ptr_ret = VARDATA(ret);
@ -611,39 +320,49 @@ ltrim(text *string)
* *
* Syntax: * Syntax:
* *
* text *rtrim(text *string) * text *rtrim(text *string, text *set)
* *
* Purpose: * Purpose:
* *
* Returns string with final blanks removed. * Returns string with final characters removed after the last
* character not in set.
* *
********************************************************************/ ********************************************************************/
text * text *
rtrim(text *string) rtrim(text *string, text *set)
{ {
text *ret; text *ret;
char *ptr, *ptr_ret; char *ptr, *ptr2, *end2, *ptr_ret;
int m; int m;
m = VARSIZE(string) - VARHDRSZ; m = VARSIZE(string) - VARHDRSZ;
if (m <= 0) { if (m <= 0 || VARSIZE(set) - VARHDRSZ <= 0) {
return string; return string;
} }
ptr = VARDATA(string) + VARSIZE(string) - VARHDRSZ - 1; ptr = VARDATA(string) + VARSIZE(string) - VARHDRSZ - 1;
ptr2 = VARDATA(set);
end2 = VARDATA(set) + VARSIZE(set) - VARHDRSZ - 1;
while (m--) { while (m--) {
if (*ptr != ' ') { while (ptr2 <= end2) {
if (*ptr == *ptr2) {
break;
}
++ptr2;
}
if (*ptr != *ptr2) {
break; break;
} }
--ptr; --ptr;
ptr2 = VARDATA(set);
} }
++m; ++m;
ret = (text *)malloc(VARHDRSZ + m); ret = (text *)palloc(VARHDRSZ + m);
VARSIZE(ret) = VARHDRSZ + m; VARSIZE(ret) = VARHDRSZ + m;
ptr_ret = VARDATA(ret) + m - 1; ptr_ret = VARDATA(ret) + m - 1;
@ -662,17 +381,17 @@ rtrim(text *string)
* *
* Syntax: * Syntax:
* *
* text *substr(text *string, int4 m) * text *substr(text *string, int4 m, int4 n)
* *
* Purpose: * Purpose:
* *
* Returns a portion of string, beginning at character m, up to * Returns a portion of string, beginning at character m, n
* the end of string. The first position of string is 1. * characters long. The first position of string is 1.
* *
********************************************************************/ ********************************************************************/
text * text *
substr(text *string, int4 m) substr(text *string, int4 m, int4 n)
{ {
text *ret; text *ret;
char *ptr, *ptr_ret; char *ptr, *ptr_ret;
@ -680,13 +399,13 @@ substr(text *string, int4 m)
len = VARSIZE(string) - VARHDRSZ - m; len = VARSIZE(string) - VARHDRSZ - m;
if (m <= 0 || len <= 0) { if (m <= 0 || n <= 0 || len <= 0) {
return string; return string;
} }
len = len + 1; len = len + 1 < n ? len + 1 : n;
ret = (text *)malloc(VARHDRSZ + len); ret = (text *)palloc(VARHDRSZ + len);
VARSIZE(ret) = VARHDRSZ + len; VARSIZE(ret) = VARHDRSZ + len;
ptr = VARDATA(string) + m - 1; ptr = VARDATA(string) + m - 1;
@ -699,6 +418,49 @@ substr(text *string, int4 m)
return ret; return ret;
} }
#endif
/********************************************************************
*
* translate
*
* Syntax:
*
* text *translate(text *string, char from, char to)
*
* Purpose:
*
* Returns string after replacing all occurences of from with
* the corresponding character in to. TRANSLATE will not remove
* characters.
*
********************************************************************/
text *
translate(text *string, char from, char to)
{
text *ret;
char *ptr, *ptr_ret;
int m;
m = VARSIZE(string) - VARHDRSZ;
if (m <= 0) {
return string;
}
ret = (text *)palloc(VARSIZE(string));
VARSIZE(ret) = VARSIZE(string);
ptr = VARDATA(string);
ptr_ret = VARDATA(ret);
while (m--) {
*ptr_ret++ = *ptr == from ? to : *ptr;
ptr++;
}
return ret;
}
/* EOF */ /* EOF */

25
src/include/catalog/pg_proc.h
View File

@ -6,7 +6,7 @@
* *
* Copyright (c) 1994, Regents of the University of California * Copyright (c) 1994, Regents of the University of California
* *
* $Id: pg_proc.h,v 1.11 1997/03/16 01:16:31 scrappy Exp $ * $Id: pg_proc.h,v 1.12 1997/03/16 20:40:52 scrappy Exp $
* *
* NOTES * NOTES
* The script catalog/genbki.sh reads this file and generates .bki * The script catalog/genbki.sh reads this file and generates .bki
@ -768,15 +768,20 @@ DATA(insert OID = 1310 ( timestample PGUID 11 f t f 2 f 16 "1296 1296" 10
DATA(insert OID = 1311 ( timestampge PGUID 11 f t f 2 f 16 "1296 1296" 100 0 0 100 foo bar )); DATA(insert OID = 1311 ( timestampge PGUID 11 f t f 2 f 16 "1296 1296" 100 0 0 100 foo bar ));
/* Oracle Compatibility Related Functions - By Edmund Mergl <E.Mergl@bawue.de> */ /* Oracle Compatibility Related Functions - By Edmund Mergl <E.Mergl@bawue.de> */
DATA(insert OID = 870 ( LOWER PGUID 11 f t f 1 f 25 "25" 100 0 0 100 foo bar )); DATA(insert OID = 870 ( lower PGUID 11 f t f 1 f 25 "25" 100 0 0 100 foo bar ));
DATA(insert OID = 871 ( UPPER PGUID 11 f t f 1 f 25 "25" 100 0 0 100 foo bar )); DATA(insert OID = 871 ( upper PGUID 11 f t f 1 f 25 "25" 100 0 0 100 foo bar ));
DATA(insert OID = 872 ( INITCAP PGUID 11 f t f 1 f 25 "25" 100 0 0 100 foo bar )); DATA(insert OID = 872 ( initcap PGUID 11 f t f 1 f 25 "25" 100 0 0 100 foo bar ));
DATA(insert OID = 873 ( LPAD PGUID 11 f t f 3 f 25 "25 23 25" 100 0 0 100 foo bar )); DATA(insert OID = 873 ( lpad PGUID 11 f t f 3 f 25 "25 23 25" 100 0 0 100 foo bar ));
DATA(insert OID = 874 ( RPAD PGUID 11 f t f 3 f 25 "25 23 25" 100 0 0 100 foo bar )); DATA(insert OID = 874 ( rpad PGUID 11 f t f 3 f 25 "25 23 25" 100 0 0 100 foo bar ));
DATA(insert OID = 875 ( LTRIM PGUID 11 f t f 2 f 25 "25 25" 100 0 0 100 foo bar )); DATA(insert OID = 875 ( ltrim PGUID 11 f t f 2 f 25 "25 25" 100 0 0 100 foo bar ));
DATA(insert OID = 876 ( RTRIM PGUID 11 f t f 2 f 25 "25 25" 100 0 0 100 foo bar )); DATA(insert OID = 876 ( rtrim PGUID 11 f t f 2 f 25 "25 25" 100 0 0 100 foo bar ));
DATA(insert OID = 877 ( SUBSTR PGUID 11 f t f 3 f 25 "25 23 23" 100 0 0 100 foo bar )); DATA(insert OID = 877 ( substr PGUID 11 f t f 3 f 25 "25 23 23" 100 0 0 100 foo bar ));
DATA(insert OID = 878 ( TRANSLATE PGUID 11 f t f 3 f 25 "25 18 18" 100 0 0 100 foo bar )); DATA(insert OID = 878 ( translate PGUID 11 f t f 3 f 25 "25 18 18" 100 0 0 100 foo bar ));
DATA(insert OID = 879 ( lpad PGUID 14 f t f 2 f 25 "25 23" 100 0 0 100 "select lpad($1, $2, \' \')" - ));
DATA(insert OID = 880 ( rpad PGUID 14 f t f 2 f 25 "25 23" 100 0 0 100 "select rpad($1, $2, \' \')" - ));
DATA(insert OID = 881 ( ltrim PGUID 14 f t f 1 f 25 "25" 100 0 0 100 "select ltrim($1, \' \')" - ));
DATA(insert OID = 882 ( rtrim PGUID 14 f t f 1 f 25 "25" 100 0 0 100 "select rtrim($1, \' \')" - ));
DATA(insert OID = 883 ( substr PGUID 14 f t f 2 f 25 "25 23" 100 0 0 100 "select substr($1, $2, 10000)" - ));
/* /*
* prototypes for functions pg_proc.c * prototypes for functions pg_proc.c