##// END OF EJS Templates
Better lessc detection/handling....
Aron Ahmadia -
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@@ -1,46 +1,50 b''
1 1 """ fabfile to prepare the notebook """
2 2
3 3 from fabric.api import local,lcd
4 4 from fabric.utils import abort
5 5 import os
6 6 from distutils.version import LooseVersion as V
7 7 from subprocess import check_output
8 8
9 9 pjoin = os.path.join
10 10 static_dir = 'static'
11 11 components_dir = os.path.join(static_dir, 'components')
12 12
13 13 min_less_version = '1.4.0'
14 14 max_less_version = '1.5.0' # exclusive
15 15
16 16 def css(minify=True, verbose=False):
17 17 """generate the css from less files"""
18 18 for name in ('style', 'ipython'):
19 19 source = pjoin('style', "%s.less" % name)
20 20 target = pjoin('style', "%s.min.css" % name)
21 21 _compile_less(source, target, minify, verbose)
22 22
23 23 def _to_bool(b):
24 24 if not b in ['True', 'False', True, False]:
25 25 abort('boolean expected, got: %s' % b)
26 26 return (b in ['True', True])
27 27
28 28 def _compile_less(source, target, minify=True, verbose=False):
29 29 """Compile a less file by source and target relative to static_dir"""
30 30 minify = _to_bool(minify)
31 31 verbose = _to_bool(verbose)
32 32 min_flag = '-x' if minify is True else ''
33 33 ver_flag = '--verbose' if verbose is True else ''
34 34
35 35 # pin less to 1.4
36 out = check_output(['lessc', '--version'])
36 try:
37 out = check_output(['lessc', '--version'])
38 except OSError as err:
39 raise ValueError("Unable to find lessc. Please install lessc >= %s and < %s " \
40 % (min_less_version, max_less_version))
37 41 out = out.decode('utf8', 'replace')
38 42 less_version = out.split()[1]
39 43 if V(less_version) < V(min_less_version):
40 44 raise ValueError("lessc too old: %s < %s" % (less_version, min_less_version))
41 if V(less_version) > V(max_less_version):
42 raise ValueError("lessc too new: %s > %s" % (less_version, max_less_version))
45 if V(less_version) >= V(max_less_version):
46 raise ValueError("lessc too new: %s >= %s" % (less_version, max_less_version))
43 47
44 48 with lcd(static_dir):
45 49 local('lessc {min_flag} {ver_flag} {source} {target}'.format(**locals()))
46 50
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