R13开始支持binary unicode

1 。bitstring语法改动 添加了unicode数据类型

6.16 Bit Syntax Expressions
...
The types utf8, utf16, and utf32 specifies encoding/decoding of the Unicode Transformation Formats UTF-8, UTF-16, and UTF-32, respectively.

When constructing a segment of a utf type, Value must be an integer in one of the ranges 0..16#D7FF, 16#E000..16#FFFD, or 16#10000..16#10FFFF (i.e. a valid Unicode code point). Construction will fail with a badarg exception if Value is outside the allowed ranges. The size of the resulting binary segment depends on the type and/or Value. For utf8, Value will be encoded in 1 through 4 bytes. For utf16, Value will be encoded in 2 or 4 bytes. Finally, for utf32, Value will always be encoded in 4 bytes.

When constructing, a literal string may be given followed by one of the UTF types, for example: <<"abc"/utf8>> which is syntatic sugar for <<$a/utf8,$b/utf8,$c/utf8>>.

A successful match of a segment of a utf type results in an integer in one of the ranges 0..16#D7FF, 16#E000..16#FFFD, or 16#10000..16#10FFFF (i.e. a valid Unicode code point). The match will fail if returned value would fall outside those ranges.

A segment of type utf8 will match 1 to 4 bytes in the binary, if the binary at the match position contains a valid UTF-8 sequence. (See RFC-2279 or the Unicode standard.)

A segment of type utf16 may match 2 or 4 bytes in the binary. The match will fail if the binary at the match position does not contain a legal UTF-16 encoding of a Unicode code point. (See RFC-2781 or the Unicode standard.)

A segment of type utf32 may match 4 bytes in the binary in the same way as an integer segment matching 32 bits. The match will fail if the resulting integer is outside the legal ranges mentioned above.
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2. 新增加了 binary_to_atom  atom_to_binary等bif.
3. re模块也支持unicode匹配。

具体的请参看EEP10.

评论

4 楼 k1000j1000 2009-04-15  

mryufeng 写道

控制台还是一贯作风 不显示汉字

可惜可惜。

3 楼 mryufeng 2009-02-27  

控制台还是一贯作风 不显示汉字

2 楼 litaocheng 2009-02-27  

哈哈.方便多了.期待哟.

1 楼 mryufeng 2009-02-27  

传说中的FFI还没有添加进去！