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Mini Shell
Mini Shell
#!/usr/bin/env python3
__license__ = 'GPL v3'
__copyright__ = '2014, Kovid Goyal <kovid at kovidgoyal.net>'
import re
from pygments.lexer import RegexLexer, default, include
from pygments.token import Comment, Punctuation, Number, Keyword, Text, String, Operator, Name
import pygments.unistring as uni
from calibre.gui2.tweak_book.editor.syntax.pygments_highlighter import create_highlighter
from polyglot.builtins import native_string_type
JS_IDENT_START = ('(?:[$_' + uni.combine('Lu', 'Ll', 'Lt', 'Lm', 'Lo', 'Nl') +
']|\\\\u[a-fA-F0-9]{4})')
JS_IDENT_PART = ('(?:[$' + uni.combine('Lu', 'Ll', 'Lt', 'Lm', 'Lo', 'Nl',
'Mn', 'Mc', 'Nd', 'Pc') +
'\u200c\u200d]|\\\\u[a-fA-F0-9]{4})')
JS_IDENT = JS_IDENT_START + '(?:' + JS_IDENT_PART + ')*'
class JavascriptLexer(RegexLexer):
"""
For JavaScript source code. This is based on the pygments JS highlighter,
bu that does not handle multi-line comments in streaming mode, so we had to
modify it.
"""
flags = re.UNICODE | re.MULTILINE
tokens = {
native_string_type('commentsandwhitespace'): [
(r'\s+', Text),
(r'<!--', Comment),
(r'//.*?$', Comment.Single),
(r'/\*', Comment.Multiline, native_string_type('comment'))
],
native_string_type('comment'): [
(r'[^*/]+', Comment.Multiline),
(r'\*/', Comment.Multiline, native_string_type('#pop')),
(r'[*/]', Comment.Multiline),
],
native_string_type('slashstartsregex'): [
include(native_string_type('commentsandwhitespace')),
(r'/(\\.|[^[/\\\n]|\[(\\.|[^\]\\\n])*])+/'
r'([gim]+\b|\B)', String.Regex, native_string_type('#pop')),
(r'(?=/)', Text, (native_string_type('#pop'), native_string_type('badregex'))),
default(native_string_type('#pop'))
],
native_string_type('badregex'): [
(r'\n', Text, native_string_type('#pop'))
],
native_string_type('root'): [
(r'\A#! ?/.*?\n', Comment), # shebang lines are recognized by node.js
(r'^(?=\s|/|<!--)', Text, native_string_type('slashstartsregex')),
include(native_string_type('commentsandwhitespace')),
(r'\+\+|--|~|&&|\?|:|\|\||\\(?=\n)|'
r'(<<|>>>?|==?|!=?|[-<>+*%&|^/])=?', Operator, native_string_type('slashstartsregex')),
(r'[{(\[;,]', Punctuation, native_string_type('slashstartsregex')),
(r'[})\].]', Punctuation),
(r'(for|in|while|do|break|return|continue|switch|case|default|if|else|'
r'throw|try|catch|finally|new|delete|typeof|instanceof|void|yield|'
r'this)\b', Keyword, native_string_type('slashstartsregex')),
(r'(var|let|with|function)\b', Keyword.Declaration, native_string_type('slashstartsregex')),
(r'(abstract|boolean|byte|char|class|const|debugger|double|enum|export|'
r'extends|final|float|goto|implements|import|int|interface|long|native|'
r'package|private|protected|public|short|static|super|synchronized|throws|'
r'transient|volatile)\b', Keyword.Reserved),
(r'(true|false|null|NaN|Infinity|undefined)\b', Keyword.Constant),
(r'(Array|Boolean|Date|Error|Function|Math|netscape|'
r'Number|Object|Packages|RegExp|String|sun|decodeURI|'
r'decodeURIComponent|encodeURI|encodeURIComponent|'
r'Error|eval|isFinite|isNaN|parseFloat|parseInt|document|this|'
r'window)\b', Name.Builtin),
(JS_IDENT, Name.Other),
(r'[0-9][0-9]*\.[0-9]+([eE][0-9]+)?[fd]?', Number.Float),
(r'0x[0-9a-fA-F]+', Number.Hex),
(r'[0-9]+', Number.Integer),
(r'"(\\\\|\\"|[^"])*"', String.Double),
(r"'(\\\\|\\'|[^'])*'", String.Single),
]
}
Highlighter = create_highlighter('JavascriptHighlighter', JavascriptLexer)
if __name__ == '__main__':
from calibre.gui2.tweak_book.editor.widget import launch_editor
launch_editor(P('viewer.js'), syntax='javascript')
Zerion Mini Shell 1.0