Ruby change text encoding
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encode is free to change the underlying bytes of a string. Here's the catch of encode: It is very likely that while the visual display and meaning of the characters remain the same, the underlying bytes most likely will not. encode has many options and can be configured extensively. However, you can not transcode the ISO-8859-1 string to US-ASCII, unless it contains only ASCII characters (eg. Given, say, the ISO-8859-1 string "Olé!", you could use encode to convert that to UTF-8, which has all of the same characters. This is done by two methods of the String class: encode and force_encoding.Įncode is used for transcoding. You can also specify encodings for individual strings in your file (although the characters in literals must still be in the encoding declared by the magic comment, or inserted through escape sequences). However, in US-ASCII, "é" is an invalid character, and will cause an error.Įncodings and Individual Strings So the following are all valid magic comments:īecause the first snippet declares the files encoding to be ISO-8859-1 (an extension to US-ASCII that adds accented characters for languages such as French and Spanish), the character "é" is valid. The syntax of the magic comment requires only one thing: The comment contains the text coding: followed by the name of the encoding.
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The magic comment must come directly at the beginning of the file, or directly after a shebang comment. The usual way of changing the encoding of a file is to use a so called "magic comment".
RUBY CHANGE TEXT ENCODING MAC OSX
On an installation of Ruby 1.9.3 MRI on Mac OSX Lion, Ruby has the following encodings:īy default, since Ruby 2.0 all Ruby source files are encoded with UTF-8. Match = s.scan(/.+?(?=) /) #" if match then html << match after_word = match =~ /\w$/ else html << s.With the advent of Ruby 1.9, Ruby now supports encodings other than US-ASCII for strings, IO, and source code. # Mary's dog, my parents' house: do not start paired quotesĮlse # advance to the next potentially significant character Like this: 'abc'.
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You can often fix that problem by enforcing the encoding. 'abc'.encoding Encoding:UTF-8 When reading a file from disk or downloading some data from a website you may run into encoding problems. When s.scan(/''/) then # tick double quote To find out the current encoding for a string you can use the encoding method. When s.scan(/` %x`/) then # backtick double quote When s.scan(/\\(\S)/) then # unhandled suppressed crossref Okay, but what if we didn't want to change the encoding (which also would have transcoded other non-7-bit chars) badbytesinutf8.encoding > UTF-8 badbytesinutf8.encode('UTF-8', :invalid > :replace) > 'abc\xDFf', it was a no-op, since we told ruby to convert from UTF-8 to UTF-8, it did nothing, the :invalid > :replace option. Warn "mismatched tag" # TODO signal file/line When s.scan(/.*?/) then # skip contents of tt # trademark symbols in +text+ to properly encoded characters.Įncoded = RDoc::Text::TO_HTML_CHARACTERS
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# Converts ampersand, dashes, ellipsis, quotes, copyright and registered Reflection in PHP is called Metaprogramming in Ruby but they are quite different. Text.gsub! %r%^*\*%m do space * $&.length endĮmpty = RDoc::Encoding.change_encoding empty, encoding if encoding Although, you have accepted an answer, I will post my answer that doesn't use eval. Yet such a value from read is significantly inconsistent in behaviour with both the File(., 'w+') case and StringIO.new('foo'). I guess this explains the encoding ASCII-8BIT encoding, which is somehow consistent with the other EOF reads on a StringIO. Text.sub! %r%\*+/% do space * $&.length end Therefore though it's not expected encoding, that's not so bad. Text.sub! %r%/\*+% do space * $&.length end Space = RDoc::Encoding.change_encoding space, encoding if encoding # File rdoc/text.rb, line 173 def strip_stars text return text unless text =~ %r%/\*.*\*/%m encoding = text. RDoc::Parser::RipperStateLex::InnerStateLex.