open-dsi
/
postgres
mirror of https://github.com/postgres/postgres
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

*** empty log message ***

Browse Source
REL7_2_STABLE
Tatsuo Ishii 25 years ago
parent 91778e890d
commit 3e90401c7c
1 changed files with 145 additions and 4 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Show Stats Download Patch File Download Diff File
  1. 149
      src/backend/utils/adt/oracle_compat.c

149
src/backend/utils/adt/oracle_compat.c
Unescape View File

@ -1,7 +1,7 @@
/*
* Edmund Mergl <E.Mergl@bawue.de>
*
* $Header: /cvsroot/pgsql/src/backend/utils/adt/oracle_compat.c,v 1.32 2001/09/14 17:46:40 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/oracle_compat.c,v 1.33 2001/09/22 03:26:30 ishii Exp $
*
*/
@ -11,6 +11,9 @@
#include "utils/builtins.h"
#ifdef MULTIBYTE
#include "mb/pg_wchar.h"
#endif
/********************************************************************
*
@ -304,14 +307,82 @@ btrim(PG_FUNCTION_ARGS)
*end2;
int m;
#ifdef MULTIBYTE
char **mp;
int mplen;
char *p;
int mblen;
int len;
#endif
if ((m = VARSIZE(string) - VARHDRSZ) <= 0 ||
(VARSIZE(set) - VARHDRSZ) <= 0)
PG_RETURN_TEXT_P(string);
ptr = VARDATA(string);
#ifdef MULTIBYTE
len = m;
mp = (char **)palloc(len*sizeof(char *));
p = ptr;
mplen = 0;
/* build the mb pointer array */
while (len > 0)
{
mp[mplen++] = p;
mblen = pg_mblen(p);
p += mblen;
len -= mblen;
}
mplen--;
#else
end = VARDATA(string) + VARSIZE(string) - VARHDRSZ - 1;
#endif
end2 = VARDATA(set) + VARSIZE(set) - VARHDRSZ - 1;
#ifdef MULTIBYTE
while (m > 0)
{
int str_len = pg_mblen(ptr);
ptr2 = VARDATA(set);
while (ptr2 <= end2)
{
int set_len = pg_mblen(ptr2);
if (str_len == set_len &&
memcmp(ptr,ptr2,str_len) == 0)
break;
ptr2 += set_len;
}
if (ptr2 > end2)
break;
ptr += str_len;
m -= str_len;
}
while (m > 0)
{
int str_len;
end = mp[mplen--];
str_len = pg_mblen(end);
ptr2 = VARDATA(set);
while (ptr2 <= end2)
{
int set_len = pg_mblen(ptr2);
if (str_len == set_len &&
memcmp(end,ptr2,str_len) == 0)
break;
ptr2 += set_len;
}
if (ptr2 > end2)
break;
m -= str_len;
}
pfree(mp);
#else
while (m > 0)
{
ptr2 = VARDATA(set);
@ -341,7 +412,7 @@ btrim(PG_FUNCTION_ARGS)
end--;
m--;
}
#endif
ret = (text *) palloc(VARHDRSZ + m);
VARATT_SIZEP(ret) = VARHDRSZ + m;
memcpy(VARDATA(ret), ptr, m);
@ -455,6 +526,26 @@ ltrim(PG_FUNCTION_ARGS)
ptr = VARDATA(string);
end2 = VARDATA(set) + VARSIZE(set) - VARHDRSZ - 1;
#ifdef MULTIBYTE
while (m > 0)
{
int str_len = pg_mblen(ptr);
ptr2 = VARDATA(set);
while (ptr2 <= end2)
{
int set_len = pg_mblen(ptr2);
if (str_len == set_len &&
memcmp(ptr,ptr2,str_len) == 0)
break;
ptr2 += set_len;
}
if (ptr2 > end2)
break;
ptr += str_len;
m -= str_len;
}
#else
while (m > 0)
{
ptr2 = VARDATA(set);
@ -469,7 +560,7 @@ ltrim(PG_FUNCTION_ARGS)
ptr++;
m--;
}
#endif
ret = (text *) palloc(VARHDRSZ + m);
VARATT_SIZEP(ret) = VARHDRSZ + m;
memcpy(VARDATA(ret), ptr, m);
@ -499,20 +590,70 @@ rtrim(PG_FUNCTION_ARGS)
text *string = PG_GETARG_TEXT_P(0);
text *set = PG_GETARG_TEXT_P(1);
text *ret;
char *ptr,
*end,
*ptr2,
*end2;
int m;
#ifdef MULTIBYTE
char **mp;
int mplen;
char *p;
int mblen;
int len;
#endif
if ((m = VARSIZE(string) - VARHDRSZ) <= 0 ||
(VARSIZE(set) - VARHDRSZ) <= 0)
PG_RETURN_TEXT_P(string);
ptr = VARDATA(string);
#ifdef MULTIBYTE
len = m;
mp = (char **)palloc(len*sizeof(char *));
p = ptr;
mplen = 0;
/* build the mb pointer array */
while (len > 0)
{
mp[mplen++] = p;
mblen = pg_mblen(p);
p += mblen;
len -= mblen;
}
mplen--;
#else
end = VARDATA(string) + VARSIZE(string) - VARHDRSZ - 1;
#endif
end2 = VARDATA(set) + VARSIZE(set) - VARHDRSZ - 1;
#ifdef MULTIBYTE
while (m > 0)
{
int str_len;
end = mp[mplen--];
str_len = pg_mblen(end);
ptr2 = VARDATA(set);
while (ptr2 <= end2)
{
int set_len = pg_mblen(ptr2);
if (str_len == set_len &&
memcmp(end,ptr2,str_len) == 0)
break;
ptr2 += set_len;
}
if (ptr2 > end2)
break;
m -= str_len;
}
pfree(mp);
#else
while (m > 0)
{
ptr2 = VARDATA(set);
@ -527,7 +668,7 @@ rtrim(PG_FUNCTION_ARGS)
end--;
m--;
}
#endif
ret = (text *) palloc(VARHDRSZ + m);
VARATT_SIZEP(ret) = VARHDRSZ + m;
memcpy(VARDATA(ret), ptr, m);

Write Preview
Loading…
Cancel
Save