diff options
Diffstat (limited to 'src/common/unicode_case.c')
| -rw-r--r-- | src/common/unicode_case.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/src/common/unicode_case.c b/src/common/unicode_case.c index 48521d83239..7afff1b172b 100644 --- a/src/common/unicode_case.c +++ b/src/common/unicode_case.c @@ -51,6 +51,14 @@ unicode_uppercase_simple(pg_wchar code) return map ? map->simplemap[CaseUpper] : code; } +pg_wchar +unicode_casefold_simple(pg_wchar code) +{ + const pg_case_map *map = find_case_map(code); + + return map ? map->simplemap[CaseFold] : code; +} + /* * unicode_strlower() * @@ -143,6 +151,30 @@ unicode_strupper(char *dst, size_t dstsize, const char *src, ssize_t srclen, } /* + * unicode_strfold() + * + * Case fold src, and return the result length (not including terminating + * NUL). + * + * String src must be encoded in UTF-8. If srclen < 0, src must be + * NUL-terminated. + * + * Result string is stored in dst, truncating if larger than dstsize. If + * dstsize is greater than the result length, dst will be NUL-terminated; + * otherwise not. + * + * If dstsize is zero, dst may be NULL. This is useful for calculating the + * required buffer size before allocating. + */ +size_t +unicode_strfold(char *dst, size_t dstsize, const char *src, ssize_t srclen, + bool full) +{ + return convert_case(dst, dstsize, src, srclen, CaseFold, full, NULL, + NULL); +} + +/* * Implement Unicode Default Case Conversion algorithm. * * If str_casekind is CaseLower or CaseUpper, map each character in the string |