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* enc/iso_8859_1.c: Implement non-ASCII case mapping.

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* test/ruby/enc/test_case_comprehensive.rb: Tests for above.
* string.c: Add iso-8859-1 to supported encodings.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55373 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
duerst 2016-06-11 00:46:21 +00:00
parent e8700ab03d
commit 02f7ad6237
4 changed files with 54 additions and 3 deletions
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45
enc/iso_8859_1.c
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@ -254,6 +254,49 @@ is_code_ctype(OnigCodePoint code, unsigned int ctype, OnigEncoding enc ARG_UNUSE
return FALSE;
}
#ifdef ONIG_CASE_MAPPING
static int
case_map (OnigCaseFoldType* flagP, const OnigUChar** pp,
const OnigUChar* end, OnigUChar* to, OnigUChar* to_end,
const struct OnigEncodingTypeST* enc)
{
OnigCodePoint code, lower;
OnigUChar *to_start = to;
OnigCaseFoldType flags = *flagP;
while (*pp<end && to<to_end) {
code = *(*pp)++;
if (code==0xdf) { /* sharp s */
if (flags&ONIGENC_CASE_UPCASE) {
flags |= ONIGENC_CASE_MODIFIED;
*to++ = 'S';
code = (flags&ONIGENC_CASE_TITLECASE) ? 's' : 'S';
}
else if (flags&ONIGENC_CASE_FOLD) {
flags |= ONIGENC_CASE_MODIFIED;
*to++ = 's';
code = 's';
}
}
else if ((lower=ONIGENC_ISO_8859_1_TO_LOWER_CASE(code)) != code)
&& (flags&ONIGENC_CASE_UPCASE)) {
flags |= ONIGENC_CASE_MODIFIED;
code = lower;
}
else if ((EncISO_8859_1_CtypeTable[code]&BIT_CTYPE_LOWER)
&& (flags&ONIGENC_CASE_UPCASE)) {
flags |= ONIGENC_CASE_MODIFIED;
code -= 0x20;
}
*to++ = code;
if (flags&ONIGENC_CASE_TITLECASE) /* switch from titlecase to lowercase for capitalize */
flags ^= (ONIGENC_CASE_UPCASE|ONIGENC_CASE_DOWNCASE|ONIGENC_CASE_TITLECASE);
}
*flagP = flags;
return (int)(to-to_start);
}
#endif /* ONIG_CASE_MAPPING */
OnigEncodingDefine(iso_8859_1, ISO_8859_1) = {
onigenc_single_byte_mbc_enc_len,
"ISO-8859-1", /* name */
@ -274,7 +317,7 @@ OnigEncodingDefine(iso_8859_1, ISO_8859_1) = {
0,
ONIGENC_FLAG_NONE,
#ifdef ONIG_CASE_MAPPING
onigenc_single_byte_ascii_only_case_map,
case_map,
#endif /* ONIG_CASE_MAPPING */
};
ENC_ALIAS("ISO8859-1", "ISO-8859-1")