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[ruby/stringio] Added support for older versions

Browse source 
https://github.com/ruby/stringio/commit/c4a13d41cd
https://github.com/ruby/stringio/commit/359c9f395c
This commit is contained in:
Nobuyoshi Nakada 2019-08-14 03:02:30 +09:00
parent c8f9e9a2a0
commit e54d349a01
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2 changed files with 56 additions and 0 deletions
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1
ext/stringio/extconf.rb
View file

@ -1,3 +1,4 @@
# frozen_string_literal: false
require 'mkmf'
have_func("rb_io_extract_modeenc", "ruby/io.h")
create_makefile('stringio')

55
ext/stringio/stringio.c
View file

@ -26,6 +26,61 @@
# define RB_INTEGER_TYPE_P(c) (FIXNUM_P(c) || RB_TYPE_P(c, T_BIGNUM))
#endif
#ifndef HAVE_RB_IO_EXTRACT_MODEENC
#define rb_io_extract_modeenc strio_extract_modeenc
static void
strio_extract_modeenc(VALUE *vmode_p, VALUE *vperm_p, VALUE opthash,
int *oflags_p, int *fmode_p, struct rb_io_enc_t *convconfig_p)
{
VALUE mode = *vmode_p;
int fmode;
convconfig_p->enc = convconfig_p->enc2 = 0;
if (NIL_P(mode)) {
fmode = FMODE_READABLE;
}
else if (FIXNUM_P(mode)) {
int flags = FIX2INT(mode);
fmode = rb_io_oflags_fmode(flags);
}
else {
const char *m = StringValueCStr(mode), *n, *e;
fmode = rb_io_modestr_fmode(m);
n = strchr(m, ':');
if (n) {
long len;
char encname[ENCODING_MAXNAMELEN+1];
if (fmode & FMODE_SETENC_BY_BOM) {
n = strchr(n, '|');
}
e = strchr(++n, ':');
len = e ? e - n : strlen(n);
if (len > 0 && len <= ENCODING_MAXNAMELEN) {
if (e) {
memcpy(encname, n, len);
encname[len] = '\0';
n = encname;
}
convconfig_p->enc = rb_enc_find(n);
}
if (e && (len = strlen(++e)) > 0 && len <= ENCODING_MAXNAMELEN) {
convconfig_p->enc2 = rb_enc_find(e);
}
}
}
if (!NIL_P(opthash)) {
rb_encoding *extenc = 0, *intenc = 0;
if (rb_io_extract_encoding_option(opthash, &extenc, &intenc, &fmode)) {
if (convconfig_p->enc || convconfig_p->enc2) {
rb_raise(rb_eArgError, "encoding specified twice");
}
}
}
*fmode_p = fmode;
}
#endif
struct StringIO {
VALUE string;
rb_encoding *enc;