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Unified Diff: src/inspector/build/rjsmin.py

Issue 2300823002: Revert of [inspector] Initial import of v8_inspector. (Closed)
Patch Set: Created 4 years, 4 months ago
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Index: src/inspector/build/rjsmin.py
diff --git a/src/inspector/build/rjsmin.py b/src/inspector/build/rjsmin.py
deleted file mode 100755
index 8357a6dcc10e571388e1f579676d8c2dce0e9e04..0000000000000000000000000000000000000000
--- a/src/inspector/build/rjsmin.py
+++ /dev/null
@@ -1,295 +0,0 @@
-#!/usr/bin/env python
-#
-# Copyright 2011 - 2013
-# Andr\xe9 Malo or his licensors, as applicable
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-r"""
-=====================
- Javascript Minifier
-=====================
-
-rJSmin is a javascript minifier written in python.
-
-The minifier is based on the semantics of `jsmin.c by Douglas Crockford`_\.
-
-The module is a re-implementation aiming for speed, so it can be used at
-runtime (rather than during a preprocessing step). Usually it produces the
-same results as the original ``jsmin.c``. It differs in the following ways:
-
-- there is no error detection: unterminated string, regex and comment
- literals are treated as regular javascript code and minified as such.
-- Control characters inside string and regex literals are left untouched; they
- are not converted to spaces (nor to \n)
-- Newline characters are not allowed inside string and regex literals, except
- for line continuations in string literals (ECMA-5).
-- "return /regex/" is recognized correctly.
-- "+ +" and "- -" sequences are not collapsed to '++' or '--'
-- Newlines before ! operators are removed more sensibly
-- rJSmin does not handle streams, but only complete strings. (However, the
- module provides a "streamy" interface).
-
-Since most parts of the logic are handled by the regex engine it's way
-faster than the original python port of ``jsmin.c`` by Baruch Even. The speed
-factor varies between about 6 and 55 depending on input and python version
-(it gets faster the more compressed the input already is). Compared to the
-speed-refactored python port by Dave St.Germain the performance gain is less
-dramatic but still between 1.2 and 7. See the docs/BENCHMARKS file for
-details.
-
-rjsmin.c is a reimplementation of rjsmin.py in C and speeds it up even more.
-
-Both python 2 and python 3 are supported.
-
-.. _jsmin.c by Douglas Crockford:
- http://www.crockford.com/javascript/jsmin.c
-"""
-__author__ = "Andr\xe9 Malo"
-__author__ = getattr(__author__, 'decode', lambda x: __author__)('latin-1')
-__docformat__ = "restructuredtext en"
-__license__ = "Apache License, Version 2.0"
-__version__ = '1.0.7'
-__all__ = ['jsmin']
-
-import re as _re
-
-
-def _make_jsmin(python_only=False):
- """
- Generate JS minifier based on `jsmin.c by Douglas Crockford`_
-
- .. _jsmin.c by Douglas Crockford:
- http://www.crockford.com/javascript/jsmin.c
-
- :Parameters:
- `python_only` : ``bool``
- Use only the python variant. If true, the c extension is not even
- tried to be loaded.
-
- :Return: Minifier
- :Rtype: ``callable``
- """
- # pylint: disable = R0912, R0914, W0612
- if not python_only:
- try:
- import _rjsmin
- except ImportError:
- pass
- else:
- return _rjsmin.jsmin
- try:
- xrange
- except NameError:
- xrange = range # pylint: disable = W0622
-
- space_chars = r'[\000-\011\013\014\016-\040]'
-
- line_comment = r'(?://[^\r\n]*)'
- space_comment = r'(?:/\*[^*]*\*+(?:[^/*][^*]*\*+)*/)'
- string1 = \
- r'(?:\047[^\047\\\r\n]*(?:\\(?:[^\r\n]|\r?\n|\r)[^\047\\\r\n]*)*\047)'
- string2 = r'(?:"[^"\\\r\n]*(?:\\(?:[^\r\n]|\r?\n|\r)[^"\\\r\n]*)*")'
- strings = r'(?:%s|%s)' % (string1, string2)
-
- charclass = r'(?:\[[^\\\]\r\n]*(?:\\[^\r\n][^\\\]\r\n]*)*\])'
- nospecial = r'[^/\\\[\r\n]'
- regex = r'(?:/(?![\r\n/*])%s*(?:(?:\\[^\r\n]|%s)%s*)*/)' % (
- nospecial, charclass, nospecial)
- space = r'(?:%s|%s)' % (space_chars, space_comment)
- newline = r'(?:%s?[\r\n])' % line_comment
-
- def fix_charclass(result):
- """ Fixup string of chars to fit into a regex char class """
- pos = result.find('-')
- if pos >= 0:
- result = r'%s%s-' % (result[:pos], result[pos + 1:])
-
- def sequentize(string):
- """
- Notate consecutive characters as sequence
-
- (1-4 instead of 1234)
- """
- first, last, result = None, None, []
- for char in map(ord, string):
- if last is None:
- first = last = char
- elif last + 1 == char:
- last = char
- else:
- result.append((first, last))
- first = last = char
- if last is not None:
- result.append((first, last))
- return ''.join(['%s%s%s' % (
- chr(first),
- last > first + 1 and '-' or '',
- last != first and chr(last) or '') for first, last in result])
-
- return _re.sub(r'([\000-\040\047])', # for better portability
- lambda m: '\\%03o' % ord(m.group(1)), (sequentize(result)
- .replace('\\', '\\\\')
- .replace('[', '\\[')
- .replace(']', '\\]')))
-
- def id_literal_(what):
- """ Make id_literal like char class """
- match = _re.compile(what).match
- result = ''.join([chr(c) for c in xrange(127) if not match(chr(c))])
- return '[^%s]' % fix_charclass(result)
-
- def not_id_literal_(keep):
- """ Make negated id_literal like char class """
- match = _re.compile(id_literal_(keep)).match
- result = ''.join([chr(c) for c in xrange(127) if not match(chr(c))])
- return r'[%s]' % fix_charclass(result)
-
- not_id_literal = not_id_literal_(r'[a-zA-Z0-9_$]')
- preregex1 = r'[(,=:\[!&|?{};\r\n]'
- preregex2 = r'%(not_id_literal)sreturn' % locals()
-
- id_literal = id_literal_(r'[a-zA-Z0-9_$]')
- id_literal_open = id_literal_(r'[a-zA-Z0-9_${\[(!+-]')
- id_literal_close = id_literal_(r'[a-zA-Z0-9_$}\])"\047+-]')
-
- dull = r'[^\047"/\000-\040]'
-
- space_sub = _re.compile((
- r'(%(dull)s+)'
- r'|(%(strings)s%(dull)s*)'
- r'|(?<=%(preregex1)s)'
- r'%(space)s*(?:%(newline)s%(space)s*)*'
- r'(%(regex)s%(dull)s*)'
- r'|(?<=%(preregex2)s)'
- r'%(space)s*(?:%(newline)s%(space)s)*'
- r'(%(regex)s%(dull)s*)'
- r'|(?<=%(id_literal_close)s)'
- r'%(space)s*(?:(%(newline)s)%(space)s*)+'
- r'(?=%(id_literal_open)s)'
- r'|(?<=%(id_literal)s)(%(space)s)+(?=%(id_literal)s)'
- r'|(?<=\+)(%(space)s)+(?=\+)'
- r'|(?<=-)(%(space)s)+(?=-)'
- r'|%(space)s+'
- r'|(?:%(newline)s%(space)s*)+') % locals()).sub
- #print space_sub.__self__.pattern
-
- def space_subber(match):
- """ Substitution callback """
- # pylint: disable = C0321, R0911
- groups = match.groups()
- if groups[0]:
- return groups[0]
- elif groups[1]:
- return groups[1]
- elif groups[2]:
- return groups[2]
- elif groups[3]:
- return groups[3]
- elif groups[4]:
- return '\n'
- elif groups[5] or groups[6] or groups[7]:
- return ' '
- else:
- return ''
-
- def jsmin(script): # pylint: disable = W0621
- r"""
- Minify javascript based on `jsmin.c by Douglas Crockford`_\.
-
- Instead of parsing the stream char by char, it uses a regular
- expression approach which minifies the whole script with one big
- substitution regex.
-
- .. _jsmin.c by Douglas Crockford:
- http://www.crockford.com/javascript/jsmin.c
-
- :Parameters:
- `script` : ``str``
- Script to minify
-
- :Return: Minified script
- :Rtype: ``str``
- """
- return space_sub(space_subber, '\n%s\n' % script).strip()
-
- return jsmin
-
-jsmin = _make_jsmin()
-
-
-def jsmin_for_posers(script):
- r"""
- Minify javascript based on `jsmin.c by Douglas Crockford`_\.
-
- Instead of parsing the stream char by char, it uses a regular
- expression approach which minifies the whole script with one big
- substitution regex.
-
- .. _jsmin.c by Douglas Crockford:
- http://www.crockford.com/javascript/jsmin.c
-
- :Warning: This function is the digest of a _make_jsmin() call. It just
- utilizes the resulting regex. It's just for fun here and may
- vanish any time. Use the `jsmin` function instead.
-
- :Parameters:
- `script` : ``str``
- Script to minify
-
- :Return: Minified script
- :Rtype: ``str``
- """
- def subber(match):
- """ Substitution callback """
- groups = match.groups()
- return (
- groups[0] or
- groups[1] or
- groups[2] or
- groups[3] or
- (groups[4] and '\n') or
- (groups[5] and ' ') or
- (groups[6] and ' ') or
- (groups[7] and ' ') or
- '')
-
- return _re.sub(
- r'([^\047"/\000-\040]+)|((?:(?:\047[^\047\\\r\n]*(?:\\(?:[^\r\n]|\r?'
- r'\n|\r)[^\047\\\r\n]*)*\047)|(?:"[^"\\\r\n]*(?:\\(?:[^\r\n]|\r?\n|'
- r'\r)[^"\\\r\n]*)*"))[^\047"/\000-\040]*)|(?<=[(,=:\[!&|?{};\r\n])(?'
- r':[\000-\011\013\014\016-\040]|(?:/\*[^*]*\*+(?:[^/*][^*]*\*+)*/))*'
- r'(?:(?:(?://[^\r\n]*)?[\r\n])(?:[\000-\011\013\014\016-\040]|(?:/\*'
- r'[^*]*\*+(?:[^/*][^*]*\*+)*/))*)*((?:/(?![\r\n/*])[^/\\\[\r\n]*(?:('
- r'?:\\[^\r\n]|(?:\[[^\\\]\r\n]*(?:\\[^\r\n][^\\\]\r\n]*)*\]))[^/\\\['
- r'\r\n]*)*/)[^\047"/\000-\040]*)|(?<=[\000-#%-,./:-@\[-^`{-~-]return'
- r')(?:[\000-\011\013\014\016-\040]|(?:/\*[^*]*\*+(?:[^/*][^*]*\*+)*/'
- r'))*(?:(?:(?://[^\r\n]*)?[\r\n])(?:[\000-\011\013\014\016-\040]|(?:'
- r'/\*[^*]*\*+(?:[^/*][^*]*\*+)*/)))*((?:/(?![\r\n/*])[^/\\\[\r\n]*(?'
- r':(?:\\[^\r\n]|(?:\[[^\\\]\r\n]*(?:\\[^\r\n][^\\\]\r\n]*)*\]))[^/'
- r'\\\[\r\n]*)*/)[^\047"/\000-\040]*)|(?<=[^\000-!#%&(*,./:-@\[\\^`{|'
- r'~])(?:[\000-\011\013\014\016-\040]|(?:/\*[^*]*\*+(?:[^/*][^*]*\*+)'
- r'*/))*(?:((?:(?://[^\r\n]*)?[\r\n]))(?:[\000-\011\013\014\016-\040]'
- r'|(?:/\*[^*]*\*+(?:[^/*][^*]*\*+)*/))*)+(?=[^\000-\040"#%-\047)*,./'
- r':-@\\-^`|-~])|(?<=[^\000-#%-,./:-@\[-^`{-~-])((?:[\000-\011\013\01'
- r'4\016-\040]|(?:/\*[^*]*\*+(?:[^/*][^*]*\*+)*/)))+(?=[^\000-#%-,./:'
- r'-@\[-^`{-~-])|(?<=\+)((?:[\000-\011\013\014\016-\040]|(?:/\*[^*]*'
- r'\*+(?:[^/*][^*]*\*+)*/)))+(?=\+)|(?<=-)((?:[\000-\011\013\014\016-'
- r'\040]|(?:/\*[^*]*\*+(?:[^/*][^*]*\*+)*/)))+(?=-)|(?:[\000-\011\013'
- r'\014\016-\040]|(?:/\*[^*]*\*+(?:[^/*][^*]*\*+)*/))+|(?:(?:(?://[^'
- r'\r\n]*)?[\r\n])(?:[\000-\011\013\014\016-\040]|(?:/\*[^*]*\*+(?:[^'
- r'/*][^*]*\*+)*/))*)+', subber, '\n%s\n' % script).strip()
-
-
-if __name__ == '__main__':
- import sys as _sys
- _sys.stdout.write(jsmin(_sys.stdin.read()))
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