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Back out fix for Unicode characters above 0x10000

This commit is contained in:
Bruce Momjian 2004-12-03 01:20:33 +00:00
parent 5d7a555d0f
commit 08e0b34bad
3 changed files with 47 additions and 84 deletions
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3
doc/src/sgml/postgres.sgml
View File

@ -1,5 +1,5 @@
<!--
$PostgreSQL: pgsql/doc/src/sgml/postgres.sgml,v 1.65 2004/11/12 21:50:53 tgl Exp $
$PostgreSQL: pgsql/doc/src/sgml/postgres.sgml,v 1.66 2004/12/03 01:20:14 momjian Exp $
-->
<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook V4.2//EN" [
@ -179,6 +179,7 @@ $PostgreSQL: pgsql/doc/src/sgml/postgres.sgml,v 1.65 2004/11/12 21:50:53 tgl Exp
&lobj;
&ecpg;
&infoschema;
&external_projects;
</part>

60
src/backend/utils/mb/wchar.c
View File

@ -1,7 +1,7 @@
/*
* conversion functions between pg_wchar and multibyte streams.
* Tatsuo Ishii
* $PostgreSQL: pgsql/src/backend/utils/mb/wchar.c,v 1.39 2004/12/02 22:37:13 momjian Exp $
* $PostgreSQL: pgsql/src/backend/utils/mb/wchar.c,v 1.40 2004/12/03 01:20:20 momjian Exp $
*
* WIN1250 client encoding updated by Pavel Behal
*
@ -343,31 +343,6 @@ pg_johab_dsplen(const unsigned char *s)
return (pg_euc_dsplen(s));
}
bool isLegalUTF8(const UTF8 *source, int len) {
UTF8 a;
const UTF8 *srcptr = source+len;
if(!source || (pg_utf_mblen(source) != len)) return false;
switch (len) {
default: return false;
/* Everything else falls through when "true"... */
case 6: if ((a = (*--srcptr)) < 0x80 || a > 0xBF) return false;
case 5: if ((a = (*--srcptr)) < 0x80 || a > 0xBF) return false;
case 4: if ((a = (*--srcptr)) < 0x80 || a > 0xBF) return false;
case 3: if ((a = (*--srcptr)) < 0x80 || a > 0xBF) return false;
case 2: if ((a = (*--srcptr)) > 0xBF) return false;
switch (*source) {
/* no fall-through in this inner switch */
case 0xE0: if (a < 0xA0) return false; break;
case 0xF0: if (a < 0x90) return false; break;
case 0xF4: if (a > 0x8F) return false; break;
default: if (a < 0x80) return false;
}
case 1: if (*source >= 0x80 && *source < 0xC2) return false;
if (*source > 0xFD) return false;
}
return true;
}
/*
* convert UTF-8 string to pg_wchar (UCS-2)
* caller should allocate enough space for "to"
@ -423,7 +398,7 @@ pg_utf2wchar_with_len(const unsigned char *from, pg_wchar *to, int len)
* returns the byte length of a UTF-8 word pointed to by s
*/
int
pg_utf_mblen(const UTF8 *s)
pg_utf_mblen(const unsigned char *s)
{
int len = 1;
@ -431,19 +406,13 @@ pg_utf_mblen(const UTF8 *s)
len = 1;
else if ((*s & 0xe0) == 0xc0)
len = 2;
else if ((*s & 0xf0) == 0xe0)
else if ((*s & 0xe0) == 0xe0)
len = 3;
else if ((*s & 0xf8) == 0xf0)
len = 4;
else if ((*s & 0xfc) == 0xf8)
len = 5;
else if ((*s & 0xfe) == 0xfc)
len = 6;
return (len);
}
static int
pg_utf_dsplen(const UTF8 *s)
pg_utf_dsplen(const unsigned char *s)
{
return 1; /* XXX fix me! */
}
@ -752,7 +721,7 @@ pg_wchar_tbl pg_wchar_table[] = {
{pg_euckr2wchar_with_len, pg_euckr_mblen, pg_euckr_dsplen, 3}, /* 3; PG_EUC_KR */
{pg_euctw2wchar_with_len, pg_euctw_mblen, pg_euctw_dsplen, 3}, /* 4; PG_EUC_TW */
{pg_johab2wchar_with_len, pg_johab_mblen, pg_johab_dsplen, 3}, /* 5; PG_JOHAB */
{pg_utf2wchar_with_len, pg_utf_mblen, pg_utf_dsplen, 6}, /* 6; PG_UNICODE */
{pg_utf2wchar_with_len, pg_utf_mblen, pg_utf_dsplen, 3}, /* 6; PG_UNICODE */
{pg_mule2wchar_with_len, pg_mule_mblen, pg_mule_dsplen, 3}, /* 7; PG_MULE_INTERNAL */
{pg_latin12wchar_with_len, pg_latin1_mblen, pg_latin1_dsplen, 1}, /* 8; PG_LATIN1 */
{pg_latin12wchar_with_len, pg_latin1_mblen, pg_latin1_dsplen, 1}, /* 9; PG_LATIN2 */
@ -853,15 +822,18 @@ pg_verifymbstr(const unsigned char *mbstr, int len, bool noError)
while (len > 0 && *mbstr)
{
/* special UTF-8 check */
if (encoding == PG_UTF8 && (*mbstr & 0xf8) == 0xf0)
{
if (noError)
return false;
ereport(ERROR,
(errcode(ERRCODE_CHARACTER_NOT_IN_REPERTOIRE),
errmsg("Unicode characters greater than or equal to 0x10000 are not supported")));
}
l = pg_mblen(mbstr);
/* special UTF-8 check */
if (encoding == PG_UTF8) {
if(!isLegalUTF8(mbstr,l)) {
if (noError) return false;
ereport(ERROR,(errcode(ERRCODE_CHARACTER_NOT_IN_REPERTOIRE),errmsg("Invalid UNICODE byte sequence detected near character %c",*mbstr)));
}
} else {
for (i = 1; i < l; i++)
{
/*
@ -891,10 +863,10 @@ pg_verifymbstr(const unsigned char *mbstr, int len, bool noError)
}
}
}
len -= l;
mbstr += l;
}
return true;
}

12
src/include/mb/pg_wchar.h
View File

@ -1,4 +1,4 @@
/* $PostgreSQL: pgsql/src/include/mb/pg_wchar.h,v 1.54 2004/12/02 22:37:14 momjian Exp $ */
/* $PostgreSQL: pgsql/src/include/mb/pg_wchar.h,v 1.55 2004/12/03 01:20:33 momjian Exp $ */
#ifndef PG_WCHAR_H
#define PG_WCHAR_H
@ -17,14 +17,6 @@
*/
typedef unsigned int pg_wchar;
/*
* The UTF types
*/
typedef unsigned int UTF32; /* at least 32 bits */
typedef unsigned short UTF16; /* at least 16 bits */
typedef unsigned char UTF8; /* typically 8 bits */
/*
* various definitions for EUC
*/
@ -348,6 +340,4 @@ extern void mic2latin(unsigned char *mic, unsigned char *p, int len, int lc);
extern void latin2mic_with_table(unsigned char *l, unsigned char *p, int len, int lc, unsigned char *tab);
extern void mic2latin_with_table(unsigned char *mic, unsigned char *p, int len, int lc, unsigned char *tab);
extern bool isLegalUTF8(const UTF8 *source, int len);
#endif /* PG_WCHAR_H */