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author | yugui <yugui@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2008-12-18 13:09:26 +0000 |
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committer | yugui <yugui@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2008-12-18 13:09:26 +0000 |
commit | 5c1bd53c92f888f45f6a843f2ef70f2fcdac077f (patch) | |
tree | 5e59d6e126eff13c9e661aa12f0b33f5db20b6c8 /lib/irb/magic-file.rb | |
parent | 52d481d8de7ee3e0dfaef7322d540f95223bf41b (diff) | |
download | ruby-5c1bd53c92f888f45f6a843f2ef70f2fcdac077f.tar.gz |
* lib/irb/init.rb (IRB.opt_parse): (M17N) adds -U and -E as command
line options. [ruby-dev:37161]. Fixes #711.
improved long optinos.
* lib/irb/init.rb (IRB.set_encoding): new subroutine for IRB.opt_parse
* lib/irb/input-method.rb (IRB::StdioInputMethod): (M17N) regards
scripts that user types as encoded in the external_encoding.
* lib/irb/input-method.rb (IRB::ReadlineInputMethod): ditto.
* lib/irb/input-method.rb (IRB::FileInputMethod): (M17N) respects
magic comment.
* lib/irb/help.rb (IRB.print_usage): (M17N) respects magic comment
in the resource file.
* lib/irb/lc/help-message: adds -U and -E.
* lib/irb/lc/ja/help-message: ditto. re-encoded from ISO-2022-JP into UTF-8.
* lib/irb/lc/ja/encoding_aliases.rb: new file. provides Japanese specific
character encoding name table for backward compatibility.
* lib/irb/lc/ja/error.rb: re-eoncoded from ISO-2022-JP into UTF-8.
magic comment.
* lib/irb/locale.rb: integrated with Ruby 1.9's M17N support.
* lib/irb/magic-file.rb: new file. utility to handle files with magic
comment and opens in the correct encoding.
* lib/irb/ruby-lex.rb (RubyLex#each_top_level_statement): recovers
character encoding for a statement after it lexed so that irb can
eval the statement in correct encoding.
* lib/irb/src_encoding.rb: new file. utility.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@20862 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'lib/irb/magic-file.rb')
-rw-r--r-- | lib/irb/magic-file.rb | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/lib/irb/magic-file.rb b/lib/irb/magic-file.rb new file mode 100644 index 0000000000..861262050e --- /dev/null +++ b/lib/irb/magic-file.rb @@ -0,0 +1,36 @@ +module IRB + class << (MagicFile = Object.new) + # see parser_magic_comment in parse.y + ENCODING_SPEC_RE = %r"coding\s*[=:]\s*([[:alnum:]\-_]+)" + + def open(path) + io = File.open(path, 'rb') + line = io.gets + line = io.gets if line[0,2] == "#!" + encoding = detect_encoding(line) + encoding ||= default_src_encoding + io.rewind + io.set_encoding(encoding, nil) + + if block_given? + begin + return (yield io) + ensure + io.close + end + else + return io + end + end + + private + def detect_encoding(line) + return unless line[0] == ?# + line = line[1..-1] + line = $1 if line[/-\*-\s*(.*?)\s*-*-$/] + return nil unless ENCODING_SPEC_RE =~ line + encoding = $1 + return encoding.sub(/-(?:mac|dos|unix)/i, '') + end + end +end |