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Allow length=-1 for NUL-terminated input to pg_strncoll(), etc.

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Like ICU, allow a length of -1 to be specified for NUL-terminated
arguments to pg_strncoll(), pg_strnxfrm(), and pg_strnxfrm_prefix().

Simplifies the code and comments.

Discussion: https://postgr.es/m/2d758e07dff26bcc7cbe2aec57431329bfe3679a.camel@j-davis.com
This commit is contained in:
Jeff Davis
2024-09-24 15:15:03 -07:00
parent 1591b38d17
commit ac30021356
2 changed files with 114 additions and 163 deletions
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8
src/include/utils/pg_locale.h
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@@ -109,18 +109,18 @@ extern pg_locale_t pg_newlocale_from_collation(Oid collid);
extern char *get_collation_actual_version(char collprovider, const char *collcollate);
extern int pg_strcoll(const char *arg1, const char *arg2, pg_locale_t locale);
extern int pg_strncoll(const char *arg1, size_t len1,
const char *arg2, size_t len2, pg_locale_t locale);
extern int pg_strncoll(const char *arg1, ssize_t len1,
const char *arg2, ssize_t len2, pg_locale_t locale);
extern bool pg_strxfrm_enabled(pg_locale_t locale);
extern size_t pg_strxfrm(char *dest, const char *src, size_t destsize,
pg_locale_t locale);
extern size_t pg_strnxfrm(char *dest, size_t destsize, const char *src,
size_t srclen, pg_locale_t locale);
ssize_t srclen, pg_locale_t locale);
extern bool pg_strxfrm_prefix_enabled(pg_locale_t locale);
extern size_t pg_strxfrm_prefix(char *dest, const char *src, size_t destsize,
pg_locale_t locale);
extern size_t pg_strnxfrm_prefix(char *dest, size_t destsize, const char *src,
size_t srclen, pg_locale_t locale);
ssize_t srclen, pg_locale_t locale);
extern int builtin_locale_encoding(const char *locale);
extern const char *builtin_validate_locale(int encoding, const char *locale);