--- /dev/null
+# This code is original from jsmin by Douglas Crockford, it was translated to
+# Python by Baruch Even. It was rewritten by Dave St.Germain for speed.
+#
+# The MIT License (MIT)
+#
+# Copyright (c) 2013 Dave St.Germain
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+
+
+import sys
+is_3 = sys.version_info >= (3, 0)
+if is_3:
+ import io
+else:
+ import StringIO
+ try:
+ import cStringIO
+ except ImportError:
+ cStringIO = None
+
+
+__all__ = ['jsmin', 'JavascriptMinify']
+__version__ = '2.0.9'
+
+
+def jsmin(js):
+ """
+ returns a minified version of the javascript string
+ """
+ if not is_3:
+ if cStringIO and not isinstance(js, unicode):
+ # strings can use cStringIO for a 3x performance
+ # improvement, but unicode (in python2) cannot
+ klass = cStringIO.StringIO
+ else:
+ klass = StringIO.StringIO
+ else:
+ klass = io.StringIO
+ ins = klass(js)
+ outs = klass()
+ JavascriptMinify(ins, outs).minify()
+ return outs.getvalue()
+
+
+class JavascriptMinify(object):
+ """
+ Minify an input stream of javascript, writing
+ to an output stream
+ """
+
+ def __init__(self, instream=None, outstream=None):
+ self.ins = instream
+ self.outs = outstream
+
+ def minify(self, instream=None, outstream=None):
+ if instream and outstream:
+ self.ins, self.outs = instream, outstream
+
+ self.is_return = False
+ self.return_buf = ''
+
+ def write(char):
+ # all of this is to support literal regular expressions.
+ # sigh
+ if char in 'return':
+ self.return_buf += char
+ self.is_return = self.return_buf == 'return'
+ self.outs.write(char)
+ if self.is_return:
+ self.return_buf = ''
+
+ read = self.ins.read
+
+ space_strings = "abcdefghijklmnopqrstuvwxyz"\
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_$\\"
+ starters, enders = '{[(+-', '}])+-"\''
+ newlinestart_strings = starters + space_strings
+ newlineend_strings = enders + space_strings
+ do_newline = False
+ do_space = False
+ escape_slash_count = 0
+ doing_single_comment = False
+ previous_before_comment = ''
+ doing_multi_comment = False
+ in_re = False
+ in_quote = ''
+ quote_buf = []
+
+ previous = read(1)
+ if previous == '\\':
+ escape_slash_count += 1
+ next1 = read(1)
+ if previous == '/':
+ if next1 == '/':
+ doing_single_comment = True
+ elif next1 == '*':
+ doing_multi_comment = True
+ previous = next1
+ next1 = read(1)
+ else:
+ write(previous)
+ elif not previous:
+ return
+ elif previous >= '!':
+ if previous in "'\"":
+ in_quote = previous
+ write(previous)
+ previous_non_space = previous
+ else:
+ previous_non_space = ' '
+ if not next1:
+ return
+
+ while 1:
+ next2 = read(1)
+ if not next2:
+ last = next1.strip()
+ if not (doing_single_comment or doing_multi_comment)\
+ and last not in ('', '/'):
+ if in_quote:
+ write(''.join(quote_buf))
+ write(last)
+ break
+ if doing_multi_comment:
+ if next1 == '*' and next2 == '/':
+ doing_multi_comment = False
+ next2 = read(1)
+ elif doing_single_comment:
+ if next1 in '\r\n':
+ doing_single_comment = False
+ while next2 in '\r\n':
+ next2 = read(1)
+ if not next2:
+ break
+ if previous_before_comment in ')}]':
+ do_newline = True
+ elif previous_before_comment in space_strings:
+ write('\n')
+ elif in_quote:
+ quote_buf.append(next1)
+
+ if next1 == in_quote:
+ numslashes = 0
+ for c in reversed(quote_buf[:-1]):
+ if c != '\\':
+ break
+ else:
+ numslashes += 1
+ if numslashes % 2 == 0:
+ in_quote = ''
+ write(''.join(quote_buf))
+ elif next1 in '\r\n':
+ if previous_non_space in newlineend_strings \
+ or previous_non_space > '~':
+ while 1:
+ if next2 < '!':
+ next2 = read(1)
+ if not next2:
+ break
+ else:
+ if next2 in newlinestart_strings \
+ or next2 > '~' or next2 == '/':
+ do_newline = True
+ break
+ elif next1 < '!' and not in_re:
+ if (previous_non_space in space_strings \
+ or previous_non_space > '~') \
+ and (next2 in space_strings or next2 > '~'):
+ do_space = True
+ elif previous_non_space in '-+' and next2 == previous_non_space:
+ # protect against + ++ or - -- sequences
+ do_space = True
+ elif self.is_return and next2 == '/':
+ # returning a regex...
+ write(' ')
+ elif next1 == '/':
+ if do_space:
+ write(' ')
+ if in_re:
+ if previous != '\\' or (not escape_slash_count % 2) or next2 in 'gimy':
+ in_re = False
+ write('/')
+ elif next2 == '/':
+ doing_single_comment = True
+ previous_before_comment = previous_non_space
+ elif next2 == '*':
+ doing_multi_comment = True
+ previous = next1
+ next1 = next2
+ next2 = read(1)
+ else:
+ in_re = previous_non_space in '(,=:[?!&|' or self.is_return # literal regular expression
+ write('/')
+ else:
+ if do_space:
+ do_space = False
+ write(' ')
+ if do_newline:
+ write('\n')
+ do_newline = False
+
+ write(next1)
+ if not in_re and next1 in "'\"":
+ in_quote = next1
+ quote_buf = []
+
+ previous = next1
+ next1 = next2
+
+ if previous >= '!':
+ previous_non_space = previous
+
+ if previous == '\\':
+ escape_slash_count += 1
+ else:
+ escape_slash_count = 0
+
+if __name__ == '__main__':
+ minifier = JavascriptMinify(sys.stdin, sys.stdout)
+ minifier.minify()
+ sys.stdout.write('\n')
projects / apple / javascriptcore.git / blobdiff