/*
* 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
*
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"
* 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;
len = 1;
else if ((*s & 0xe0) == 0xc0)
len = 2;
- else if ((*s & 0xf0) == 0xe0)
- len = 3;
- else if ((*s & 0xf8) == 0xf0)
- len = 4;
- else if ((*s & 0xfc) == 0xf8)
- len = 5;
- else if ((*s & 0xfe) == 0xfc)
- len = 6;
+ else if ((*s & 0xe0) == 0xe0)
+ len = 3;
return (len);
}
static int
-pg_utf_dsplen(const UTF8 *s)
+pg_utf_dsplen(const unsigned char *s)
{
return 1; /* XXX fix me! */
}
{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_mule2wchar_with_len, pg_mule_mblen, pg_mule_dsplen, 3}, /* 7; PG_MULE_INTERNAL */
+ {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 */
{pg_latin12wchar_with_len, pg_latin1_mblen, pg_latin1_dsplen, 1}, /* 10; PG_LATIN3 */
{pg_latin12wchar_with_len, pg_latin1_mblen, pg_latin1_dsplen, 1}, /* 26; ISO-8859-7 */
{pg_latin12wchar_with_len, pg_latin1_mblen, pg_latin1_dsplen, 1}, /* 27; ISO-8859-8 */
{pg_latin12wchar_with_len, pg_latin1_mblen, pg_latin1_dsplen, 1}, /* 28; PG_WIN1250 */
- {0, pg_sjis_mblen, pg_sjis_dsplen, 2}, /* 29; PG_SJIS */
- {0, pg_big5_mblen, pg_big5_dsplen, 2}, /* 30; PG_BIG5 */
- {0, pg_gbk_mblen, pg_gbk_dsplen, 2}, /* 31; PG_GBK */
- {0, pg_uhc_mblen, pg_uhc_dsplen, 2}, /* 32; PG_UHC */
- {0, pg_gb18030_mblen, pg_gb18030_dsplen, 2} /* 33; PG_GB18030 */
+ {0, pg_sjis_mblen, pg_sjis_dsplen, 2}, /* 29; PG_SJIS */
+ {0, pg_big5_mblen, pg_big5_dsplen, 2}, /* 30; PG_BIG5 */
+ {0, pg_gbk_mblen, pg_gbk_dsplen, 2}, /* 31; PG_GBK */
+ {0, pg_uhc_mblen, pg_uhc_dsplen, 2}, /* 32; PG_UHC */
+ {0, pg_gb18030_mblen, pg_gb18030_dsplen, 2} /* 33; PG_GB18030 */
};
/* returns the byte length of a word for mule internal code */
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++)
+ for (i = 1; i < l; i++)
+ {
+ /*
+ * we expect that every multibyte char consists of bytes
+ * having the 8th bit set
+ */
+ if (i >= len || (mbstr[i] & 0x80) == 0)
{
- /*
- * we expect that every multibyte char consists of bytes
- * having the 8th bit set
- */
- if (i >= len || (mbstr[i] & 0x80) == 0)
- {
- char buf[8 * 2 + 1];
- char *p = buf;
- int j,
+ char buf[8 * 2 + 1];
+ char *p = buf;
+ int j,
jlimit;
- if (noError)
- return false;
+ if (noError)
+ return false;
- jlimit = Min(l, len);
- jlimit = Min(jlimit, 8); /* prevent buffer overrun */
+ jlimit = Min(l, len);
+ jlimit = Min(jlimit, 8); /* prevent buffer overrun */
- for (j = 0; j < jlimit; j++)
- p += sprintf(p, "%02x", mbstr[j]);
+ for (j = 0; j < jlimit; j++)
+ p += sprintf(p, "%02x", mbstr[j]);
- ereport(ERROR,
- (errcode(ERRCODE_CHARACTER_NOT_IN_REPERTOIRE),
- errmsg("invalid byte sequence for encoding \"%s\": 0x%s",
- GetDatabaseEncodingName(), buf)));
- }
+ ereport(ERROR,
+ (errcode(ERRCODE_CHARACTER_NOT_IN_REPERTOIRE),
+ errmsg("invalid byte sequence for encoding \"%s\": 0x%s",
+ GetDatabaseEncodingName(), buf)));
}
-
}
+
len -= l;
mbstr += l;
}
+
return true;
}
projects / postgresql / commitdiff