* Functions for handling locale-related info
*
*
- * Copyright (c) 1996-2011, PostgreSQL Global Development Group
+ * Copyright (c) 1996-2013, PostgreSQL Global Development Group
*
*
* IDENTIFICATION
{PG_SJIS, "SJIS"},
{PG_SJIS, "PCK"},
{PG_SJIS, "CP932"},
+ {PG_SJIS, "SHIFT_JIS"},
{PG_BIG5, "BIG5"},
{PG_BIG5, "BIG5HKSCS"},
#ifdef WIN32
/*
- * On Windows, use CP<codepage number> instead of the nl_langinfo() result
+ * On Windows, use CP<code page number> instead of the nl_langinfo() result
+ *
+ * Visual Studio 2012 expanded the set of valid LC_CTYPE values, so have its
+ * locale machinery determine the code page. See comments at IsoLocaleName().
+ * For other compilers, follow the locale's predictable format.
+ *
+ * Returns a malloc()'d string for the caller to free.
*/
static char *
win32_langinfo(const char *ctype)
{
- char *r;
+ char *r = NULL;
+
+#if (_MSC_VER >= 1700)
+ _locale_t loct = NULL;
+
+ loct = _create_locale(LC_CTYPE, ctype);
+ if (loct != NULL)
+ {
+ r = malloc(16); /* excess */
+ if (r != NULL)
+ sprintf(r, "CP%u", loct->locinfo->lc_codepage);
+ _free_locale(loct);
+ }
+#else
char *codepage;
- int ln;
/*
* Locale format on Win32 is <Language>_<Country>.<CodePage> . For
- * example, English_USA.1252.
+ * example, English_United States.1252.
*/
codepage = strrchr(ctype, '.');
- if (!codepage)
- return NULL;
- codepage++;
- ln = strlen(codepage);
- r = malloc(ln + 3);
- sprintf(r, "CP%s", codepage);
+ if (codepage != NULL)
+ {
+ int ln;
+
+ codepage++;
+ ln = strlen(codepage);
+ r = malloc(ln + 3);
+ if (r != NULL)
+ sprintf(r, "CP%s", codepage);
+ }
+#endif
return r;
}
+
+#ifndef FRONTEND
+/*
+ * Given a Windows code page identifier, find the corresponding PostgreSQL
+ * encoding. Issue a warning and return -1 if none found.
+ */
+int
+pg_codepage_to_encoding(UINT cp)
+{
+ char sys[16];
+ int i;
+
+ sprintf(sys, "CP%u", cp);
+
+ /* Check the table */
+ for (i = 0; encoding_match_list[i].system_enc_name; i++)
+ if (pg_strcasecmp(sys, encoding_match_list[i].system_enc_name) == 0)
+ return encoding_match_list[i].pg_enc_code;
+
+ ereport(WARNING,
+ (errmsg("could not determine encoding for codeset \"%s\"", sys),
+ errdetail("Please report this to <pgsql-bugs@postgresql.org>.")));
+
+ return -1;
+}
+#endif
#endif /* WIN32 */
#if (defined(HAVE_LANGINFO_H) && defined(CODESET)) || defined(WIN32)
*
* If the result is PG_SQL_ASCII, callers should treat it as being compatible
* with any desired encoding.
+ *
+ * If running in the backend and write_message is false, this function must
+ * cope with the possibility that elog() and palloc() are not yet usable.
*/
int
pg_get_encoding_from_locale(const char *ctype, bool write_message)
}
#endif /* (HAVE_LANGINFO_H && CODESET) || WIN32 */
-
-#ifdef WIN32
-/*
- * Windows has a problem with locale names that have a dot in the country
- * name. For example:
- *
- * "Chinese (Traditional)_Hong Kong S.A.R..950"
- *
- * For some reason, setlocale() doesn't accept that. Fortunately, Windows'
- * setlocale() accepts various alternative names for such countries, so we
- * provide a wrapper setlocale() function that maps the troublemaking locale
- * names to accepted aliases.
- */
-
-#undef setlocale
-
-struct locale_map
-{
- const char *locale_name_part; /* string in locale name to replace */
- const char *replacement; /* string to replace it with */
-};
-
-static const struct locale_map locale_map_list[] = {
-
- /*
- * "HKG" is listed here:
- * http://msdn.microsoft.com/en-us/library/cdax410z%28v=vs.71%29.aspx
- * (Country/Region Strings).
- *
- * "ARE" is the ISO-3166 three-letter code for U.A.E. It is not on the
- * above list, but seems to work anyway.
- */
- { "Hong Kong S.A.R.", "HKG" },
- { "U.A.E.", "ARE" },
-
- /*
- * The ISO-3166 country code for Macau S.A.R. is MAC, but Windows doesn't
- * seem to recognize that. And Macau isn't listed in the table of
- * accepted abbreviations linked above. Fortunately, "ZHM" seems to be
- * accepted as an alias for "Chinese (Traditional)_Macau S.A.R..950". I'm
- * not sure where "ZHM" comes from, must be some legacy naming scheme. But
- * hey, it works.
- *
- * Note that unlike HKG and ARE, ZHM is an alias for the *whole* locale
- * name, not just the country part.
- *
- * Some versions of Windows spell it "Macau", others "Macao".
- */
- { "Chinese (Traditional)_Macau S.A.R..950", "ZHM" },
- { "Chinese_Macau S.A.R..950", "ZHM" },
- { "Chinese (Traditional)_Macao S.A.R..950", "ZHM" },
- { "Chinese_Macao S.A.R..950", "ZHM" }
-};
-
-char *
-pgwin32_setlocale(int category, const char *locale)
-{
- char *result;
- char *alias;
- int i;
-
- if (locale == NULL)
- return setlocale(category, locale);
-
- /* Check if the locale name matches any of the problematic ones. */
- alias = NULL;
- for (i = 0; i < lengthof(locale_map_list); i++)
- {
- const char *needle = locale_map_list[i].locale_name_part;
- const char *replacement = locale_map_list[i].replacement;
- char *match;
-
- match = strstr(locale, needle);
- if (match != NULL)
- {
- /* Found a match. Replace the matched string. */
- int matchpos = match - locale;
- int replacementlen = strlen(replacement);
- char *rest = match + strlen(needle);
- int restlen = strlen(rest);
-
- alias = malloc(matchpos + replacementlen + restlen + 1);
- if (!alias)
- return NULL;
-
- memcpy(&alias[0], &locale[0], matchpos);
- memcpy(&alias[matchpos], replacement, replacementlen);
- memcpy(&alias[matchpos + replacementlen], rest, restlen + 1); /* includes null terminator */
-
- break;
- }
- }
-
- /* Call the real setlocale() function */
- if (alias)
- {
- result = setlocale(category, alias);
- free(alias);
- }
- else
- result = setlocale(category, locale);
-
- return result;
-}
-
-#endif /* WIN32 */
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