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string.c: add mrb_strcasecmp_p for case-insensitive comparison

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Move casecmp_p from mruby-string-ext and mruby-encoding to core as
mrb_strcasecmp_p (predicate function returning mrb_bool). Add
MRB_STR_CASECMP_P macro to internal.h for comparing mrb_value strings
with literal strings.

This eliminates code duplication and avoids static function name
collision for future amalgamation support.

Co-authored-by: Claude <noreply@anthropic.com>
This commit is contained in:
Yukihiro "Matz" Matsumoto
2025-12-23 10:41:21 +09:00
parent ce570c28bb
commit 768a1f7752
4 changed files with 23 additions and 42 deletions
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include/mruby/internal.h
+3
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@@ -163,6 +163,9 @@ mrb_value mrb_str_inspect(mrb_state *mrb, mrb_value str);
mrb_bool mrb_str_beg_len(mrb_int str_len, mrb_int *begp, mrb_int *lenp);
mrb_value mrb_str_byte_subseq(mrb_state *mrb, mrb_value str, mrb_int beg, mrb_int len);
mrb_value mrb_str_aref(mrb_state *mrb, mrb_value str, mrb_value idx, mrb_value len);
mrb_bool mrb_strcasecmp_p(const char *s1, mrb_int len1, const char *s2, mrb_int len2);
#define MRB_STR_CASECMP_P(str, lit) \
mrb_strcasecmp_p(RSTRING_PTR(str), RSTRING_LEN(str), lit, sizeof(lit"")-1)
uint32_t mrb_byte_hash(const uint8_t*, mrb_int);
uint32_t mrb_byte_hash_step(const uint8_t*, mrb_int, uint32_t);