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mini.py
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mini.py
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#!/usr/bin/env python
"""
mini.py: minifies and compresses static content.
yuicompressor, htmlcompressor, uglifyjs, and lessc are run against the
CSS, JS, HTML. Then CSS, JS, and images are GZipped.
The result is a tar archive pumped to stdout.
"""
""" Version history
1.0.0 - Initial build (Based off of pywebbuild project)
"""
__author__ = 'Justin Wilson'
__copyright__ = 'Copyright 2015'
__credits__ = ['Justin Wilson']
__license__ = 'MIT'
__version__ = '1.0.0'
__maintainer__ = 'Justin Wilson'
__repository__ = 'https://github.com/juztin/mini'
__email__ = 'justin@mini.io'
__status__ = 'Beta'
import os
import re
import sys
from optparse import OptionParser
from subprocess import Popen, PIPE
from shutil import ignore_patterns
from time import time
CWD = os.getcwd()
UTIL_ROOT = os.path.dirname(sys.argv[0])
UTIL_JOIN = lambda *args: os.path.join(UTIL_ROOT, *args)
IGNORE_FILES = ['.DS_Store', '*.pyc', 'tmp*', '*.xcf']
MINIFY_CSS = ['java', '-jar', UTIL_JOIN('yuicompressor.jar'), '{FILENAME}']
MINIFY_HTML = ['java', '-jar', UTIL_JOIN('htmlcompressor.jar'), '{FILENAME}']
MINIFY_JS = ['uglifyjs', '{FILENAME}']
COMPRESS_FILE = ['gzip', '-c', '{FILENAME}']
class cprint:
# http://snippets.dzone.com/posts/show/6944
COLORIZE = True
SILENT = False
OK = '\033[32m'
WARNING = '\033[33m'
ERROR = '\033[31m'
INFO = '\033[34m'
MSG = '\033[37m'
DEFAULT = '\033[m'
@staticmethod
def _print(color, msg, reg_msg='', file=sys.stdout):
if cprint.SILENT and file == sys.stdout:
return
elif cprint.COLORIZE:
print("{0}{1}{2}{3}".format(
color, msg, cprint.DEFAULT, reg_msg
), file=file)
else:
print(msg, reg_msg, file=file)
@staticmethod
def warning(msg, reg_msg=''):
cprint._print(cprint.WARNING, msg, reg_msg, file=sys.stderr)
@staticmethod
def error(msg, reg_msg=''):
cprint._print(cprint.ERROR, msg, reg_msg, file=sys.stderr)
@staticmethod
def ok(msg, reg_msg=''):
cprint._print(cprint.OK, msg, reg_msg)
@staticmethod
def info(msg, reg_msg=''):
cprint._print(cprint.INFO, msg, reg_msg)
@staticmethod
def msg(msg, reg_msg=''):
cprint._print(cprint.MSG, msg, reg_msg)
def timed(f):
def _f(*args, **kwds):
start = time()
result = f(*args, **kwds)
elapsed = time() - start
if cprint.SILENT:
return
elif cprint.COLORIZE:
print("{2}{0}\r\n{1}Build finished in {2}{3}{1} seconds{4}".format(
'-----------------------------------------------------------',
cprint.INFO,
cprint.WARNING,
elapsed,
cprint.DEFAULT))
else:
print('Build finished in {0} seconds'.format(elapsed))
return result
return _f
def _perform_utilproc(src, cmd_args,
on_cmd=None, include=None, ignore=None, verbose=False):
if include is None:
return
names = os.listdir(src)
inc_p = ignore_patterns(*include)
include_names = inc_p(src, names)
if ignore is None:
ignore_files = set()
else:
patterns = ignore_patterns(*ignore)
ignore_files = patterns(src, names)
for name in names:
if name in ignore_files:
if verbose:
cprint.warning('ignored: ', os.path.join(src, name))
continue
srcname = os.path.join(src, name)
if not os.path.isdir(srcname) and name not in include_names:
if verbose:
cprint.warning('excluded: ', os.path.join(src, name))
continue
try:
if os.path.isdir(srcname):
_perform_utilproc(srcname,
cmd_args,
on_cmd=on_cmd,
include=include,
ignore=ignore,
verbose=verbose)
else:
args = [a if a != '{FILENAME}' else srcname for a in cmd_args]
if verbose:
cprint.ok(str(' '.join(c for c in args)))
p = Popen(args, stdout=PIPE, stderr=PIPE)
stdout, stderr = p.communicate()
if p.returncode != 0:
cprint.error('ERROR PROCESSING: ', '{0} -> {1}'.
format(srcname, args))
cprint.error(stderr)
continue
if on_cmd is not None:
on_cmd(srcname, stdout)
elif verbose:
cprint(stdout)
except (IOError, os.error) as err:
msg = "Failed to perform util on {0}: ".format(srcname, str(err))
return (False, msg)
return (True, None)
def minify_css(src, util_dir, verbose):
def write_file(filename, compressed_content):
fnp = os.path.splitext(filename)
min_filename = fnp[0]+'.min'+fnp[1]
with open(min_filename, 'w') as f:
f.write(str(compressed_content))
(succeded, err) = _perform_utilproc(
src,
MINIFY_CSS,
on_cmd=write_file,
include=['*.css'],
ignore=['*.min.*', 'lib', 'libs', 'vendor'],
verbose=verbose)
if not succeded:
raise Exception(err)
def minify_js(src, util_dir, verbose):
def write_file(filename, compressed_content):
fnp = os.path.splitext(filename)
min_filename = fnp[0]+'.min'+fnp[1]
with open(min_filename, 'w') as f:
f.write(str(compressed_content))
(succeded, err) = _perform_utilproc(
src,
MINIFY_JS,
on_cmd=write_file,
include=['*.js'],
ignore=['*.min.*', 'lib', 'libs', 'vendor'],
verbose=verbose)
if not succeded:
raise Exception(err)
def minify_html(src, util_dir, verbose, fix_django=False):
def write_file(filename, lines):
with open(filename, 'w') as f:
for line in lines:
f.write(line)
def fix_djangotemplate(template_name, lines):
filename = os.path.basename(template_name)
cprint.info('Fixing Django template: %s' % filename)
exp = re.compile(r'(\{%\s[^%}]*[^\s=><])([=><]{2})([^}%]*%\})')
for line in lines:
yield exp.sub(r'\1 \2\3', line)
def write_handler(filename, content):
lines = content.splitlines()
if fix_django:
lines = fix_djangotemplate(filename, lines)
write_file(filename, lines)
(succeded, err) = _perform_utilproc(
src,
MINIFY_HTML,
on_cmd=write_handler,
include=['*.html'],
verbose=verbose)
if not succeded:
raise Exception(err)
def gzip_content(src, util_dir, include_files=None, ignore=None, verbose=False):
def write_file(filename, gzipped_content):
with open(filename+'.gz', 'wb') as f:
f.write(gzipped_content)
if not ignore:
ignore = []
ignore.append('*.gz')
(succeded, err) = _perform_utilproc(
src,
COMPRESS_FILE,
on_cmd=write_file,
include=include_files,
ignore=ignore,
verbose=verbose)
if not succeded:
raise Exception(err)
@timed
def build(static_path, util_dir, ignore, verbose):
# Minify html
cprint.info('Minifying html')
minify_html(static_path,
util_dir,
verbose)
# Minify css
cprint.info('Minifying stylesheets')
minify_css(static_path,
util_dir,
verbose)
# Minify js
cprint.info('Minifying scripts')
minify_js(static_path,
util_dir,
verbose)
# Gzip css
cprint.info('GZipping css')
gzip_content(static_path,
util_dir,
include_files=['*.css'],
verbose=verbose)
# Gzip js
cprint.info('GZipping js')
gzip_content(static_path,
util_dir,
include_files=['*.js'],
verbose=verbose)
# Gzip images
cprint.info('GZipping images')
gzip_content(static_path,
util_dir,
include_files=['*.jpg', '*.png', '*.gif', '*.bmp', '*.ico'],
verbose=verbose)
import traceback
parser = OptionParser()
parser.add_option('-c', '--color', action='store_true', default=False,
help='colorize output.')
parser.add_option('-v', '--verbose', action='store_true', default=False,
help='verbose output.')
parser.add_option('-p', '--path', default=CWD,
help='path to static content to minify/compress')
parser.add_option('-s', '--silent', action='store_true', default=False,
help='silent output.')
(options, args) = parser.parse_args()
cprint.SILENT = options.silent
cprint.COLORIZE = options.color
if options.silent:
options.verbose = False
try:
build(options.path, UTIL_ROOT, IGNORE_FILES,
options.verbose)
except Exception as err:
cprint.error(traceback.format_exc())
cprint.error(err)
cprint.error('Build Failed!')