Added RNC lexer and sample file

1 files changed, 63 insertions, 0 deletions

diff --git a/pygments/lexers/rnc.py b/pygments/lexers/rnc.py
new file mode 100644
index 00000000..810b24f6
--- /dev/null
+++ b/pygments/lexers/rnc.py
@@ -0,0 +1,63 @@
+# -*- coding: utf-8 -*-
+"""
+    pygments.lexers.rnc
+    ~~~~~~~~~~~~~~~~~~~
+
+    Lexer for Relax-NG Compact syntax
+
+    :copyright: Copyright 2016 by the Pygments team, see AUTHORS.
+    :license: BSD, see LICENSE for details.
+"""
+
+from pygments.lexer import RegexLexer
+from pygments.token import Text, Comment, Operator, Keyword, Name, String, \
+    Punctuation
+
+__all__ = ['RNCCompactLexer']
+
+
+class RNCCompactLexer(RegexLexer):
+    """
+    For `RelaxNG-compact <http://relaxng.org>`_ syntax.
+    """
+
+    name = 'Relax-NG Compact'
+    aliases = ['rnc', 'rng-compact']
+    filenames = ['*.rnc']
+
+    tokens = {
+        'root': [
+            (r'namespace', Keyword.Namespace),
+            (r'(default|datatypes)', Keyword.Declaration),
+            (r'##.*$', Comment.Preproc),
+            (r'#.*$', Comment.Single),
+            (r'"[^"]*"', String.Double),
+            (r'(element|attribute|mixed)', Keyword.Declaration, 'variable'),
+            (r'(text|xsd:[^ ]+)', Keyword.Type, 'maybe_xsdattributes'),
+            (r'[,?&*=|]', Operator),
+            (r'[(){}]', Punctuation),
+            (r'.', Text),
+            ],
+
+        # a variable has been declared using `element` or `attribute`
+        'variable': [
+            (r'[^{]+', Name.Variable),
+            (r'\{', Punctuation, '#pop'),
+            ],
+
+        # after an xsd:<datatype> declaration there may be attributes
+        'maybe_xsdattributes': [
+            (r'\{', Punctuation, 'xsdattributes'),
+            (r'\}', Punctuation, '#pop'),
+            (r'.', Text),
+            ],
+
+        # attributes take the form { key1 = value1 key2 = value2 ... }
+        'xsdattributes': [
+            (r'[^ =}]', Name.Attribute),
+            (r'=', Operator),
+            (r'"[^"]*"', String.Double),
+            (r'\}', Punctuation, '#pop'),
+            (r'.', Text),
+            ]
+    }