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August 3, 2010 00:57
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# -*- coding: utf-8 -*- | |
#!/usr/bin/python | |
# This code is original from jsmin by Douglas Crockford, it was translated to | |
# Python by Baruch Even. The original code had the following copyright and | |
# license. | |
# | |
# /* jsmin.c | |
# 2007-05-22 | |
# | |
# Copyright (c) 2002 Douglas Crockford (www.crockford.com) | |
# | |
# 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 shall be used for Good, not Evil. | |
# | |
# 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. | |
# */ | |
from StringIO import StringIO | |
import os,sys,shutil | |
VERSION = '0.2.2' | |
COPYRIGHT = """ | |
# JSMin Tool V%s | |
# | |
# This code is original from jsmin by Douglas Crockford, it was translated to | |
# Python by Baruch Even. The original code had the following copyright and | |
# license. | |
# Copyright (c) 2002 Douglas Crockford <www.crockford.com> | |
# | |
# Auto-process by Jason Lee<http://huacn.blogbus.com> | |
# | |
""" % (VERSION) | |
def jsmin(js): | |
ins = StringIO(js) | |
outs = StringIO() | |
JavascriptMinify().minify(ins, outs) | |
str = outs.getvalue() | |
if len(str) > 0 and str[0] == '\n': | |
str = str[1:] | |
return str | |
def isAlphanum(c): | |
"""return true if the character is a letter, digit, underscore, | |
dollar sign, or non-ASCII character. | |
""" | |
return ((c >= 'a' and c <= 'z') or (c >= '0' and c <= '9') or | |
(c >= 'A' and c <= 'Z') or c == '_' or c == '$' or c == '\\' or (c is not None and ord(c) > 126)); | |
class UnterminatedComment(Exception): | |
pass | |
class UnterminatedStringLiteral(Exception): | |
pass | |
class UnterminatedRegularExpression(Exception): | |
pass | |
class JavascriptMinify(object): | |
def _outA(self): | |
self.outstream.write(self.theA) | |
def _outB(self): | |
self.outstream.write(self.theB) | |
def _get(self): | |
"""return the next character from stdin. Watch out for lookahead. If | |
the character is a control character, translate it to a space or | |
linefeed. | |
""" | |
c = self.theLookahead | |
self.theLookahead = None | |
if c == None: | |
c = self.instream.read(1) | |
if c >= ' ' or c == '\n': | |
return c | |
if c == '': # EOF | |
return '\000' | |
if c == '\r': | |
return '\n' | |
return ' ' | |
def _peek(self): | |
self.theLookahead = self._get() | |
return self.theLookahead | |
def _next(self): | |
"""get the next character, excluding comments. peek() is used to see | |
if a '/' is followed by a '/' or '*'. | |
""" | |
c = self._get() | |
if c == '/': | |
p = self._peek() | |
if p == '/': | |
c = self._get() | |
while c > '\n': | |
c = self._get() | |
return c | |
if p == '*': | |
c = self._get() | |
while 1: | |
c = self._get() | |
if c == '*': | |
if self._peek() == '/': | |
self._get() | |
return ' ' | |
if c == '\000': | |
raise UnterminatedComment() | |
return c | |
def _action(self, action): | |
"""do something! What you do is determined by the argument: | |
1 Output A. Copy B to A. Get the next B. | |
2 Copy B to A. Get the next B. (Delete A). | |
3 Get the next B. (Delete B). | |
action treats a string as a single character. Wow! | |
action recognizes a regular expression if it is preceded by ( or , or =. | |
""" | |
if action <= 1: | |
self._outA() | |
if action <= 2: | |
self.theA = self.theB | |
if self.theA == "'" or self.theA == '"': | |
while 1: | |
self._outA() | |
self.theA = self._get() | |
if self.theA == self.theB: | |
break | |
if self.theA <= '\n': | |
raise UnterminatedStringLiteral() | |
if self.theA == '\\': | |
self._outA() | |
self.theA = self._get() | |
if action <= 3: | |
self.theB = self._next() | |
if self.theB == '/' and (self.theA == '(' or self.theA == ',' or | |
self.theA == '=' or self.theA == ':' or | |
self.theA == '[' or self.theA == '?' or | |
self.theA == '!' or self.theA == '&' or | |
self.theA == '|' or self.theA == ';' or | |
self.theA == '{' or self.theA == '}' or | |
self.theA == '\n'): | |
self._outA() | |
self._outB() | |
while 1: | |
self.theA = self._get() | |
if self.theA == '/': | |
break | |
elif self.theA == '\\': | |
self._outA() | |
self.theA = self._get() | |
elif self.theA <= '\n': | |
raise UnterminatedRegularExpression() | |
self._outA() | |
self.theB = self._next() | |
def _jsmin(self): | |
"""Copy the input to the output, deleting the characters which are | |
insignificant to JavaScript. Comments will be removed. Tabs will be | |
replaced with spaces. Carriage returns will be replaced with linefeeds. | |
Most spaces and linefeeds will be removed. | |
""" | |
self.theA = '\n' | |
self._action(3) | |
while self.theA != '\000': | |
if self.theA == ' ': | |
if isAlphanum(self.theB): | |
self._action(1) | |
else: | |
self._action(2) | |
elif self.theA == '\n': | |
if self.theB in ['{', '[', '(', '+', '-']: | |
self._action(1) | |
elif self.theB == ' ': | |
self._action(3) | |
else: | |
if isAlphanum(self.theB): | |
self._action(1) | |
else: | |
self._action(2) | |
else: | |
if self.theB == ' ': | |
if isAlphanum(self.theA): | |
self._action(1) | |
else: | |
self._action(3) | |
elif self.theB == '\n': | |
if self.theA in ['}', ']', ')', '+', '-', '"', '\'']: | |
self._action(1) | |
else: | |
if isAlphanum(self.theA): | |
self._action(1) | |
else: | |
self._action(3) | |
else: | |
self._action(1) | |
def minify(self, instream, outstream): | |
self.instream = instream | |
self.outstream = outstream | |
self.theA = '\n' | |
self.theB = None | |
self.theLookahead = None | |
self._jsmin() | |
self.instream.close() | |
def auto_process_files(path,packed_dir_name=None): | |
path = str.replace(path,'\\','/') | |
for root,dirs,files in os.walk(path): | |
for f in files: | |
# Check the sub directorys | |
if(f[-3:] == '.js'): | |
# Process file and save it | |
old_file_name = root + '/'+ f | |
if packed_dir_name: | |
# Make new dir name's "packed" | |
dir_packed = root + '/%s/' % packed_dir_name | |
if(not os.path.exists(dir_packed)): | |
os.makedirs(dir_packed) | |
new_file_name = dir_packed + f | |
else: | |
new_file_name = old_file_name | |
# Open the old file | |
in_stream = open(old_file_name) | |
old_content = in_stream.read() | |
in_stream.close() | |
# to minify | |
new_content = jsmin(old_content) | |
# write the new file | |
outstream = open(new_file_name,"w") | |
outstream.write(new_content) | |
outstream.close() | |
print 'File: %s process successed.' % (old_file_name.replace('\\','/')) | |
if __name__ == '__main__': | |
import os | |
print COPYRIGHT | |
s = raw_input("Do you want's overwrite the old files?(Y/N):") | |
print 'Progress running...' | |
packed_dir_name = '__packed__' | |
is_overwrite = str.lower(s) == 'y' | |
if not is_overwrite: | |
auto_process_files(os.getcwd(),packed_dir_name) | |
else: | |
auto_process_files(os.getcwd()) | |
print """ | |
The current directory of all the Javascript files have been successfully | |
disposed of.""" | |
if not is_overwrite: | |
print """ | |
The new Javascript file has been compressed files stored | |
in "%s" folder, manually copying them to cover the original document.""" % (packed_dir_name) | |
else: | |
print """The compressed files stored.""" | |
print '\r\nThe process is end.' | |
raw_input('Press any key to exit.') |
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