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#include "ts_locale.h"
#include "utils/builtins.h"
#include "utils/pg_locale.h"
#include "mb/pg_wchar.h"
#ifdef TS_USE_WIDE
#ifdef WIN32
size_t
wchar2char(char *to, const wchar_t *from, size_t len)
{
if (GetDatabaseEncoding() == PG_UTF8)
{
int r,
nbytes;
if (len == 0)
return 0;
/* in any case, *to should be allocated with enough space */
nbytes = WideCharToMultiByte(CP_UTF8, 0, from, len, NULL, 0, NULL, NULL);
if (nbytes == 0)
ereport(ERROR,
(errcode(ERRCODE_CHARACTER_NOT_IN_REPERTOIRE),
errmsg("UTF-16 to UTF-8 translation failed: %lu",
GetLastError())));
r = WideCharToMultiByte(CP_UTF8, 0, from, len, to, nbytes,
NULL, NULL);
if (r == 0)
ereport(ERROR,
(errcode(ERRCODE_CHARACTER_NOT_IN_REPERTOIRE),
errmsg("UTF-16 to UTF-8 translation failed: %lu",
GetLastError())));
return r;
}
return wcstombs(to, from, len);
}
size_t
char2wchar(wchar_t *to, const char *from, size_t len)
{
if (GetDatabaseEncoding() == PG_UTF8)
{
int r;
if (len == 0)
return 0;
r = MultiByteToWideChar(CP_UTF8, 0, from, len, to, len);
if (!r)
{
pg_verifymbstr(from, len, false);
ereport(ERROR,
(errcode(ERRCODE_CHARACTER_NOT_IN_REPERTOIRE),
errmsg("invalid multibyte character for locale"),
errhint("The server's LC_CTYPE locale is probably incompatible with the database encoding.")));
}
Assert(r <= len);
return r;
}
return mbstowcs(to, from, len);
}
#endif /* WIN32 */
int
_t_isalpha(const char *ptr)
{
wchar_t character;
char2wchar(&character, ptr, 1);
return iswalpha((wint_t) character);
}
int
_t_isprint(const char *ptr)
{
wchar_t character;
char2wchar(&character, ptr, 1);
return iswprint((wint_t) character);
}
#endif /* TS_USE_WIDE */
char *
lowerstr(char *str)
{
char *ptr = str;
#ifdef TS_USE_WIDE
/*
* Use wide char code only when max encoding length > 1 and ctype != C.
* Some operating systems fail with multi-byte encodings and a C locale.
* Also, for a C locale there is no need to process as multibyte. From
* backend/utils/adt/oracle_compat.c Teodor
*/
if (pg_database_encoding_max_length() > 1 && !lc_ctype_is_c())
{
wchar_t *wstr,
*wptr;
int len = strlen(str);
wptr = wstr = (wchar_t *) palloc(sizeof(wchar_t) * (len + 1));
char2wchar(wstr, str, len + 1);
while (*wptr)
{
*wptr = towlower((wint_t) *wptr);
wptr++;
}
wchar2char(str, wstr, len);
pfree(wstr);
}
else
#endif
while (*ptr)
{
*ptr = tolower(*(unsigned char *) ptr);
ptr++;
}
return str;
}
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