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Commit767a902

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Add small hack to support use of Unicode-based locales on WIN32. This
is not adequately tested yet, but let's get it into beta1 so it can betested. Magnus Hagander and Tom Lane.
1 parenta0a0bc0 commit767a902

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2 files changed

+197
-7
lines changed

2 files changed

+197
-7
lines changed

‎src/backend/utils/adt/oracle_compat.c

Lines changed: 112 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -9,7 +9,7 @@
99
*
1010
*
1111
* IDENTIFICATION
12-
*$PostgreSQL: pgsql/src/backend/utils/adt/oracle_compat.c,v 1.60 2005/05/07 15:18:17 momjian Exp $
12+
*$PostgreSQL: pgsql/src/backend/utils/adt/oracle_compat.c,v 1.61 2005/08/24 17:50:00 tgl Exp $
1313
*
1414
*-------------------------------------------------------------------------
1515
*/
@@ -149,6 +149,117 @@ wcstotext(const wchar_t *str, int ncodes)
149149
#endif/* USE_WIDE_UPPER_LOWER */
150150

151151

152+
/*
153+
* On Windows, the "Unicode" locales assume UTF16 not UTF8 encoding.
154+
* To make use of the upper/lower functionality, we need to map UTF8 to
155+
* UTF16, which for some reason mbstowcs and wcstombs won't do for us.
156+
* This conversion layer takes care of it.
157+
*/
158+
159+
#ifdefWIN32
160+
161+
/* texttowcs for the case of UTF8 to UTF16 */
162+
staticwchar_t*
163+
win32_utf8_texttowcs(consttext*txt)
164+
{
165+
intnbytes=VARSIZE(txt)-VARHDRSZ;
166+
wchar_t*result;
167+
intr;
168+
169+
/* Overflow paranoia */
170+
if (nbytes<0||
171+
nbytes> (int) (INT_MAX /sizeof(wchar_t))-1)
172+
ereport(ERROR,
173+
(errcode(ERRCODE_OUT_OF_MEMORY),
174+
errmsg("out of memory")));
175+
176+
/* Output workspace cannot have more codes than input bytes */
177+
result= (wchar_t*)palloc((nbytes+1)*sizeof(wchar_t));
178+
179+
/* stupid Microsloth API does not work for zero-length input */
180+
if (nbytes==0)
181+
r=0;
182+
else
183+
{
184+
/* Do the conversion */
185+
r=MultiByteToWideChar(CP_UTF8,0,VARDATA(txt),nbytes,
186+
result,nbytes);
187+
188+
if (!r)/* assume it's NO_UNICODE_TRANSLATION */
189+
{
190+
/* see notes above about error reporting */
191+
pg_verifymbstr(VARDATA(txt),nbytes, false);
192+
ereport(ERROR,
193+
(errcode(ERRCODE_CHARACTER_NOT_IN_REPERTOIRE),
194+
errmsg("invalid multibyte character for locale"),
195+
errhint("The server's LC_CTYPE locale is probably incompatible with the database encoding.")));
196+
}
197+
}
198+
199+
Assert(r <=nbytes);
200+
result[r]=0;
201+
202+
returnresult;
203+
}
204+
205+
/* wcstotext for the case of UTF16 to UTF8 */
206+
statictext*
207+
win32_utf8_wcstotext(constwchar_t*str)
208+
{
209+
text*result;
210+
intnbytes;
211+
intr;
212+
213+
nbytes=WideCharToMultiByte(CP_UTF8,0,str,-1,NULL,0,NULL,NULL);
214+
if (nbytes==0)/* shouldn't happen */
215+
ereport(ERROR,
216+
(errcode(ERRCODE_CHARACTER_NOT_IN_REPERTOIRE),
217+
errmsg("UTF16 to UTF8 translation failed: %lu",
218+
GetLastError())));
219+
220+
result=palloc(nbytes+VARHDRSZ);
221+
222+
r=WideCharToMultiByte(CP_UTF8,0,str,-1,VARDATA(result),nbytes,
223+
NULL,NULL);
224+
if (r==0)/* shouldn't happen */
225+
ereport(ERROR,
226+
(errcode(ERRCODE_CHARACTER_NOT_IN_REPERTOIRE),
227+
errmsg("UTF16 to UTF8 translation failed: %lu",
228+
GetLastError())));
229+
230+
VARATT_SIZEP(result)=nbytes+VARHDRSZ-1;/* -1 to ignore null */
231+
232+
returnresult;
233+
}
234+
235+
/* interface layer to check which encoding is in use */
236+
237+
staticwchar_t*
238+
win32_texttowcs(consttext*txt)
239+
{
240+
if (GetDatabaseEncoding()==PG_UTF8)
241+
returnwin32_utf8_texttowcs(txt);
242+
else
243+
returntexttowcs(txt);
244+
}
245+
246+
statictext*
247+
win32_wcstotext(constwchar_t*str,intncodes)
248+
{
249+
if (GetDatabaseEncoding()==PG_UTF8)
250+
returnwin32_utf8_wcstotext(str);
251+
else
252+
returnwcstotext(str,ncodes);
253+
}
254+
255+
/* use macros to cause routines below to call interface layer */
256+
257+
#definetexttowcswin32_texttowcs
258+
#definewcstotextwin32_wcstotext
259+
260+
#endif/* WIN32 */
261+
262+
152263
/********************************************************************
153264
*
154265
* lower

‎src/backend/utils/adt/varlena.c

Lines changed: 85 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
88
*
99
*
1010
* IDENTIFICATION
11-
* $PostgreSQL: pgsql/src/backend/utils/adt/varlena.c,v 1.131 2005/08/02 16:11:57 tgl Exp $
11+
* $PostgreSQL: pgsql/src/backend/utils/adt/varlena.c,v 1.132 2005/08/24 17:50:00 tgl Exp $
1212
*
1313
*-------------------------------------------------------------------------
1414
*/
@@ -849,6 +849,8 @@ varstr_cmp(char *arg1, int len1, char *arg2, int len2)
849849
char*a1p,
850850
*a2p;
851851

852+
#ifndefWIN32
853+
852854
if (len1 >=STACKBUFLEN)
853855
a1p= (char*)palloc(len1+1);
854856
else
@@ -865,10 +867,87 @@ varstr_cmp(char *arg1, int len1, char *arg2, int len2)
865867

866868
result=strcoll(a1p,a2p);
867869

868-
if (len1 >=STACKBUFLEN)
870+
if (a1p!=a1buf)
869871
pfree(a1p);
870-
if (len2 >=STACKBUFLEN)
872+
if (a2p!=a2buf)
871873
pfree(a2p);
874+
875+
#else/* WIN32 */
876+
877+
/* Win32 does not have UTF-8, so we need to map to UTF-16 */
878+
if (GetDatabaseEncoding()==PG_UTF8)
879+
{
880+
inta1len;
881+
inta2len;
882+
intr;
883+
884+
if (len1 >=STACKBUFLEN/2)
885+
{
886+
a1len=len1*2+2;
887+
a1p=palloc(a1len);
888+
}
889+
else
890+
{
891+
a1len=STACKBUFLEN;
892+
a1p=a1buf;
893+
}
894+
if (len2 >=STACKBUFLEN/2)
895+
{
896+
a2len=len2*2+2;
897+
a2p=palloc(a2len);
898+
}
899+
else
900+
{
901+
a2len=STACKBUFLEN;
902+
a2p=a2buf;
903+
}
904+
905+
/* stupid Microsloth API does not work for zero-length input */
906+
if (len1==0)
907+
r=0;
908+
else
909+
{
910+
r=MultiByteToWideChar(CP_UTF8,0,arg1,len1,
911+
(LPWSTR)a1p,a1len/2);
912+
if (!r)
913+
ereport(ERROR,
914+
(errmsg("could not convert string to UTF16: %lu",
915+
GetLastError())));
916+
}
917+
((LPWSTR)a1p)[r]=0;
918+
919+
if (len2==0)
920+
r=0;
921+
else
922+
{
923+
r=MultiByteToWideChar(CP_UTF8,0,arg2,len2,
924+
(LPWSTR)a2p,a2len/2);
925+
if (!r)
926+
ereport(ERROR,
927+
(errmsg("could not convert string to UTF16: %lu",
928+
GetLastError())));
929+
}
930+
((LPWSTR)a2p)[r]=0;
931+
932+
errno=0;
933+
result=wcscoll((LPWSTR)a1p, (LPWSTR)a2p);
934+
if (result==2147483647)/* _NLSCMPERROR; missing from mingw headers */
935+
ereport(ERROR,
936+
(errmsg("could not compare unicode strings: %d",
937+
errno)));
938+
939+
if (a1p!=a1buf)
940+
pfree(a1p);
941+
if (a2p!=a2buf)
942+
pfree(a2p);
943+
944+
returnresult;
945+
}
946+
947+
/* Win32 has strncoll(), so use it to avoid copying */
948+
return_strncoll(arg1,arg2,Min(len1,len2));
949+
950+
#endif/* WIN32 */
872951
}
873952
else
874953
{
@@ -2000,7 +2079,7 @@ replace_text(PG_FUNCTION_ARGS)
20002079

20012080
/*
20022081
* check_replace_text_has_escape_char
2003-
* check whether replace_text has escape char.
2082+
* check whether replace_text has escape char.
20042083
*/
20052084
staticbool
20062085
check_replace_text_has_escape_char(consttext*replace_text)
@@ -2175,7 +2254,7 @@ replace_text_regexp(PG_FUNCTION_ARGS)
21752254

21762255
/*
21772256
* Copy the replace_text. Process back references when the
2178-
* replace_text has escape characters.
2257+
* replace_text has escape characters.
21792258
*/
21802259
if (have_escape)
21812260
appendStringInfoRegexpSubstr(str,replace_text,pmatch,src_text);
@@ -2573,7 +2652,7 @@ md5_bytea(PG_FUNCTION_ARGS)
25732652
PG_RETURN_TEXT_P(result_text);
25742653
}
25752654

2576-
/*
2655+
/*
25772656
* Return the size of a datum, possibly compressed
25782657
*
25792658
* Works on any data type

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