aboutsummaryrefslogtreecommitdiff
path: root/src/include/utils/pg_locale.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/include/utils/pg_locale.h')
-rw-r--r--src/include/utils/pg_locale.h61
1 files changed, 58 insertions, 3 deletions
diff --git a/src/include/utils/pg_locale.h b/src/include/utils/pg_locale.h
index 7b8cbf58d2c..931f5b3b880 100644
--- a/src/include/utils/pg_locale.h
+++ b/src/include/utils/pg_locale.h
@@ -12,7 +12,12 @@
#ifndef _PG_LOCALE_
#define _PG_LOCALE_
+#include "mb/pg_wchar.h"
+
#ifdef USE_ICU
+/* only include the C APIs, to avoid errors in cpluspluscheck */
+#undef U_SHOW_CPLUSPLUS_API
+#define U_SHOW_CPLUSPLUS_API 0
#include <unicode/ucol.h>
#endif
@@ -77,6 +82,52 @@ struct collate_methods
bool strxfrm_is_safe;
};
+struct ctype_methods
+{
+ /* case mapping: LOWER()/INITCAP()/UPPER() */
+ size_t (*strlower) (char *dest, size_t destsize,
+ const char *src, ssize_t srclen,
+ pg_locale_t locale);
+ size_t (*strtitle) (char *dest, size_t destsize,
+ const char *src, ssize_t srclen,
+ pg_locale_t locale);
+ size_t (*strupper) (char *dest, size_t destsize,
+ const char *src, ssize_t srclen,
+ pg_locale_t locale);
+ size_t (*strfold) (char *dest, size_t destsize,
+ const char *src, ssize_t srclen,
+ pg_locale_t locale);
+
+ /* required */
+ bool (*wc_isdigit) (pg_wchar wc, pg_locale_t locale);
+ bool (*wc_isalpha) (pg_wchar wc, pg_locale_t locale);
+ bool (*wc_isalnum) (pg_wchar wc, pg_locale_t locale);
+ bool (*wc_isupper) (pg_wchar wc, pg_locale_t locale);
+ bool (*wc_islower) (pg_wchar wc, pg_locale_t locale);
+ bool (*wc_isgraph) (pg_wchar wc, pg_locale_t locale);
+ bool (*wc_isprint) (pg_wchar wc, pg_locale_t locale);
+ bool (*wc_ispunct) (pg_wchar wc, pg_locale_t locale);
+ bool (*wc_isspace) (pg_wchar wc, pg_locale_t locale);
+ pg_wchar (*wc_toupper) (pg_wchar wc, pg_locale_t locale);
+ pg_wchar (*wc_tolower) (pg_wchar wc, pg_locale_t locale);
+
+ /* required */
+ bool (*char_is_cased) (char ch, pg_locale_t locale);
+
+ /*
+ * Optional. If defined, will only be called for single-byte encodings. If
+ * not defined, or if the encoding is multibyte, will fall back to
+ * pg_strlower().
+ */
+ char (*char_tolower) (unsigned char ch, pg_locale_t locale);
+
+ /*
+ * For regex and pattern matching efficiency, the maximum char value
+ * supported by the above methods. If zero, limit is set by regex code.
+ */
+ pg_wchar max_chr;
+};
+
/*
* We use a discriminated union to hold either a locale_t or an ICU collator.
* pg_locale_t is occasionally checked for truth, so make it a pointer.
@@ -95,13 +146,13 @@ struct collate_methods
*/
struct pg_locale_struct
{
- char provider;
bool deterministic;
bool collate_is_c;
bool ctype_is_c;
bool is_default;
const struct collate_methods *collate; /* NULL if collate_is_c */
+ const struct ctype_methods *ctype; /* NULL if ctype_is_c */
union
{
@@ -125,6 +176,10 @@ extern void init_database_collation(void);
extern pg_locale_t pg_newlocale_from_collation(Oid collid);
extern char *get_collation_actual_version(char collprovider, const char *collcollate);
+
+extern bool char_is_cased(char ch, pg_locale_t locale);
+extern bool char_tolower_enabled(pg_locale_t locale);
+extern char char_tolower(unsigned char ch, pg_locale_t locale);
extern size_t pg_strlower(char *dst, size_t dstsize,
const char *src, ssize_t srclen,
pg_locale_t locale);
@@ -159,8 +214,8 @@ extern void report_newlocale_failure(const char *localename);
/* These functions convert from/to libc's wchar_t, *not* pg_wchar_t */
extern size_t wchar2char(char *to, const wchar_t *from, size_t tolen,
- pg_locale_t locale);
+ locale_t loc);
extern size_t char2wchar(wchar_t *to, size_t tolen,
- const char *from, size_t fromlen, pg_locale_t locale);
+ const char *from, size_t fromlen, locale_t loc);
#endif /* _PG_LOCALE_ */