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* io.c (io_encoding_set): always warn if external encoding and internal

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encoding are identical. [ruby-core:40727] [Bug #5568]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@34997 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
naruse 2012-03-13 04:03:06 +00:00
parent 272d72efc0
commit db83618d2c
3 changed files with 43 additions and 1 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
Tue Mar 13 12:37:53 2012 NARUSE, Yui <naruse@ruby-lang.org>
* io.c (io_encoding_set): always warn if external encoding and internal
encoding are identical. [ruby-core:40727] [Bug #5568]
Tue Mar 13 12:37:03 2012 Nobuyoshi Nakada <nobu@ruby-lang.org>
Bug #5350

13
io.c
View file

@ -8743,11 +8743,22 @@ io_encoding_set(rb_io_t *fptr, VALUE v1, VALUE v2, VALUE opt)
enc = find_encoding(v2);
if (enc == enc2) {
/* Special case - "-" => no transcoding */
VALUE tmp1 = rb_check_string_type(v1);
rb_warn("Ignoring internal encoding %s: it is identical to external encoding %s",
StringValueCStr(tmp), NIL_P(tmp1) ? rb_enc_name(enc) : StringValueCStr(tmp1));
enc2 = NULL;
}
}
else
else {
enc = find_encoding(v2);
if (enc == enc2) {
/* Special case - "-" => no transcoding */
VALUE tmp1 = rb_check_string_type(v1);
rb_warn("Ignoring internal encoding %s: it is identical to external encoding %s",
rb_enc_name(enc), NIL_P(tmp1) ? rb_enc_name(enc) : StringValueCStr(tmp1));
enc2 = NULL;
}
}
SET_UNIVERSAL_NEWLINE_DECORATOR_IF_ENC2(enc2, ecflags);
ecflags = rb_econv_prepare_options(opt, &ecopts, ecflags);
}

26
test/ruby/test_io_m17n.rb
View file

@ -984,6 +984,32 @@ EOT
end)
end
def test_set_encoding_identical
bug5568 = '[ruby-core:40727]'
open(__FILE__, "r") do |f|
assert_warn(/Ignoring internal encoding euc-jp: it is identical to external encoding eucjp/, bug5568) {
f.set_encoding("eucjp:euc-jp")
}
assert_warn(/Ignoring internal encoding euc-jp: it is identical to external encoding eucjp/, bug5568) {
f.set_encoding("eucjp", "euc-jp")
}
assert_warn(/Ignoring internal encoding euc-jp: it is identical to external encoding EUC-JP/, bug5568) {
f.set_encoding(Encoding::EUC_JP, "euc-jp")
}
assert_warn(/Ignoring internal encoding EUC-JP: it is identical to external encoding eucjp/, bug5568) {
f.set_encoding("eucjp", Encoding::EUC_JP)
}
assert_warn(/Ignoring internal encoding EUC-JP: it is identical to external encoding EUC-JP/, bug5568) {
f.set_encoding(Encoding::EUC_JP, Encoding::EUC_JP)
}
nonstr = Object.new
def nonstr.to_str; "eucjp"; end
assert_warn(/Ignoring internal encoding eucjp: it is identical to external encoding eucjp/, bug5568) {
f.set_encoding(nonstr, nonstr)
}
end
end
def test_set_encoding_undef
pipe(proc do |w|
w << "\ufffd"