Initial checkin of YAML substances.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@3772 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 51 insertions, 0 deletions

diff --git a/lib/yaml/constants.rb b/lib/yaml/constants.rb
new file mode 100644
index 0000000000..21aee7e0a6
--- /dev/null
+++ b/lib/yaml/constants.rb
@@ -0,0 +1,51 @@
+#
+# Constants used throughout the library
+#
+module YAML
+
+	#
+	# Constants
+	#
+	VERSION = '0.60'
+	SUPPORTED_YAML_VERSIONS = ['1.0']
+
+	#
+	# Parser tokens
+	#
+	WORD_CHAR = 'A-Za-z0-9'
+	PRINTABLE_CHAR = '-_A-Za-z0-9!?/()$\'". ' 
+	NOT_PLAIN_CHAR = '\x7f\x0-\x1f\x80-\x9f'
+	ESCAPE_CHAR = '[\\x00-\\x08\\x0b-\\x0d\\x0e-\\x1f]'
+	INDICATOR_CHAR = '*&!|\\\\^@%{}[]='
+	SPACE_INDICATORS = '-#:,?'
+	RESTRICTED_INDICATORS = '#:,}]'
+	DNS_COMP_RE = "\\w(?:[-\\w]*\\w)?"
+	DNS_NAME_RE = "(?:(?:#{DNS_COMP_RE}\\.)+#{DNS_COMP_RE}|#{DNS_COMP_RE})"
+	ESCAPES = %w{\z		\x01	\x02	\x03	\x04	\x05	\x06	\a
+			     \x08	\t		\n		\v		\f		\r		\x0e	\x0f
+				 \x10	\x11	\x12	\x13	\x14	\x15	\x16	\x17
+				 \x18	\x19	\x1a	\e		\x1c	\x1d	\x1e	\x1f
+			    }
+	UNESCAPES = {
+				'z' => "\x00", 'a' => "\x07", 'b' => "\x08", 't' => "\x09", 
+				'n' => "\x0a", 'v' => "\x0b", 'f' => "\x0c",
+				'r' => "\x0d", 'e' => "\x1b", '\\' => '\\',
+			    }
+
+	#
+	# Default settings
+	#
+	DEFAULTS = {
+		:Indent => 2, :UseHeader => false, :UseVersion => false, :Version => '1.0',
+		:SortKeys => false, :AnchorFormat => 'id%03d', :ExplicitTypes => false,
+		:WidthType => 'absolute', :BestWidth => 80,
+		:UseBlock => false, :UseFold => false, :Encoding => :None
+	}
+	TRANSFER_DOMAINS = {
+		'yaml.org,2002' => {},
+		'ruby.yaml.org,2002' => {}
+	}
+	PRIVATE_TYPES = {}
+	IMPLICIT_TYPES = [ 'null', 'bool', 'time', 'int', 'float' ]
+
+end