def test_comparison_stringerific():
abc = String('abc')
xyz = String('xyz')
assert abc == abc
assert abc != xyz
assert not abc == xyz
assert not abc != abc
# Interaction with other types
assert Number(123) != String('123')
assert String('123') != Number(123)
# Sass strings don't support ordering
with pytest.raises(TypeError):
abc < xyz
with pytest.raises(TypeError):
abc <= xyz
with pytest.raises(TypeError):
abc > xyz
with pytest.raises(TypeError):
abc >= xyz
with pytest.raises(TypeError):
Number(123) < String('123')
def sprite_position(map, sprite, offset_x=None, offset_y=None):
"""
Returns the position for the original image in the sprite.
This is suitable for use as a value to background-position.
"""
map = map.render()
sprite_map = sprite_maps.get(map)
sprite_name = String.unquoted(sprite).value
sprite = sprite_map and sprite_map.get(sprite_name)
if not sprite_map:
log.error("No sprite map found: %s", map, extra={'stack': True})
elif not sprite:
log.error("No sprite found: %s in %s", sprite_name, sprite_map['*n*'], extra={'stack': True})
if sprite:
x = None
if offset_x is not None and not isinstance(offset_x, Number):
x = offset_x
if not x or x.value not in ('left', 'right', 'center'):
if x:
offset_x = None
x = Number(offset_x or 0, 'px')
if not x.value or (x.value <= -1 or x.value >= 1) and not x.is_simple_unit('%'):
x -= Number(sprite[2], 'px')
y = None
if offset_y is not None and not isinstance(offset_y, Number):
y = offset_y
if not y or y.value not in ('top', 'bottom', 'center'):
if y:
offset_y = None
y = Number(offset_y or 0, 'px')
if not y.value or (y.value <= -1 or y.value >= 1) and not y.is_simple_unit('%'):
y -= Number(sprite[3], 'px')
return List([x, y])
return List([Number(0), Number(0)])
def sprite_position(map, sprite, offset_x=None, offset_y=None):
"""
Returns the position for the original image in the sprite.
This is suitable for use as a value to background-position.
"""
map = map.render()
sprite_map = sprite_maps.get(map)
sprite_name = String.unquoted(sprite).value
sprite = sprite_map and sprite_map.get(sprite_name)
if not sprite_map:
log.error("No sprite map found: %s", map, extra={'stack': True})
elif not sprite:
log.error("No sprite found: %s in %s", sprite_name, sprite_map['*n*'], extra={'stack': True})
if sprite:
x = None
if offset_x is not None and not isinstance(offset_x, Number):
x = offset_x
if not x or x.value not in ('left', 'right', 'center'):
if x:
offset_x = None
x = Number(offset_x or 0, 'px')
if not x.value or (x.value <= -1 or x.value >= 1) and not x.is_simple_unit('%'):
x -= Number(sprite[2], 'px')
y = None
if offset_y is not None and not isinstance(offset_y, Number):
y = offset_y
if not y or y.value not in ('top', 'bottom', 'center'):
if y:
offset_y = None
y = Number(offset_y or 0, 'px')
if not y.value or (y.value <= -1 or y.value >= 1) and not y.is_simple_unit('%'):
y -= Number(sprite[3], 'px')
return List([x, y])
return List([Number(0), Number(0)])
def sprite(map, sprite, offset_x=None, offset_y=None, cache_buster=True):
"""
Returns the image and background position for use in a single shorthand
property
"""
map = map.render()
sprite_map = sprite_maps.get(map)
sprite_name = String.unquoted(sprite).value
sprite = sprite_map and sprite_map.get(sprite_name)
if not sprite_map:
log.error("No sprite map found: %s", map, extra={'stack': True})
elif not sprite:
log.error("No sprite found: %s in %s", sprite_name, sprite_map['*n*'], extra={'stack': True})
if sprite:
url = '%s%s' % (config.ASSETS_URL, sprite_map['*f*'])
if cache_buster:
url += '?_=%s' % sprite_map['*t*']
x = Number(offset_x or 0, 'px')
y = Number(offset_y or 0, 'px')
if not x.value or (x.value <= -1 or x.value >= 1) and not x.is_simple_unit('%'):
x -= Number(sprite[2], 'px')
if not y.value or (y.value <= -1 or y.value >= 1) and not y.is_simple_unit('%'):
y -= Number(sprite[3], 'px')
url = "url(%s)" % escape(url)
return List([String.unquoted(url), x, y])
return List([Number(0), Number(0)])
def sprite(map, sprite, offset_x=None, offset_y=None, cache_buster=True):
"""
Returns the image and background position for use in a single shorthand
property
"""
map = map.render()
sprite_maps = _get_cache('sprite_maps')
sprite_map = sprite_maps.get(map)
sprite_name = String.unquoted(sprite).value
sprite = sprite_map and sprite_map.get(sprite_name)
if not sprite_map:
log.error("No sprite map found: %s", map, extra={'stack': True})
elif not sprite:
log.error("No sprite found: %s in %s",
sprite_name,
sprite_map['*n*'],
extra={'stack': True})
if sprite:
url = '%s%s' % (config.ASSETS_URL, sprite_map['*f*'])
if cache_buster:
url += '?_=%s' % sprite_map['*t*']
x = Number(offset_x or 0, 'px')
y = Number(offset_y or 0, 'px')
if not x.value or (x.value <= -1
or x.value >= 1) and not x.is_simple_unit('%'):
x -= Number(sprite[2], 'px')
if not y.value or (y.value <= -1
or y.value >= 1) and not y.is_simple_unit('%'):
y -= Number(sprite[3], 'px')
url = "url(%s)" % escape(url)
return List([String.unquoted(url), x, y])
return List([Number(0), Number(0)])
def __grad_position(index, default, radial, color_stops):
try:
stops = Number(color_stops[index][0])
if radial and not stops.is_simple_unit('px') and (index == 0 or index == -1 or index == len(color_stops) - 1):
log.warn("Webkit only supports pixels for the start and end stops for radial gradients. Got %s", stops)
except IndexError:
stops = Number(default)
return stops
def __radial_svg(color_stops, cx, cy, r):
gradient = '<radialGradient id="grad" gradientUnits="userSpaceOnUse" cx="%s" cy="%s" r="%s">%s</radialGradient>' % (
to_str(Number(cx)),
to_str(Number(cy)),
to_str(Number(r)),
__color_stops_svg(color_stops)
)
return __svg_template(gradient)
def __grad_position(index, default, radial, color_stops):
try:
stops = Number(color_stops[index][0])
if radial and not stops.is_simple_unit('px') and (index == 0 or index == -1 or index == len(color_stops) - 1):
log.warn("Webkit only supports pixels for the start and end stops for radial gradients. Got %s", stops)
except IndexError:
stops = Number(default)
return stops
def _linear_svg(color_stops, x1, y1, x2, y2):
gradient = '<linearGradient id="grad" x1="%s" y1="%s" x2="%s" y2="%s">%s</linearGradient>' % (
to_str(Number(x1)),
to_str(Number(y1)),
to_str(Number(x2)),
to_str(Number(y2)),
__color_stops_svg(color_stops)
)
return __svg_template(gradient)
def dash_compass_slice(lst, start_index, end_index=None):
start_index = Number(start_index).value
end_index = Number(end_index).value if end_index is not None else None
ret = {}
lst = List(lst)
if end_index:
# This function has an inclusive end, but Python slicing is exclusive
end_index += 1
ret = lst.value[start_index:end_index]
return List(ret, use_comma=lst.use_comma)
def _render_standard_color_stops(color_stops):
pairs = []
for i, (stop, color) in enumerate(color_stops):
if ((i == 0 and stop == Number(0, '%')) or
(i == len(color_stops) - 1 and stop == Number(100, '%'))):
pairs.append(color)
else:
pairs.append(List([color, stop], use_comma=False))
return List(pairs, use_comma=True)
def background_noise(density=None,
opacity=None,
size=None,
monochrome=False,
intensity=(),
color=None,
background=None,
inline=False):
if not Image:
raise Exception("Images manipulation require PIL")
density = [Number(v).value for v in List.from_maybe(density)]
intensity = [Number(v).value for v in List.from_maybe(intensity)]
color = [Color(v).value for v in List.from_maybe(color) if v]
opacity = [Number(v).value for v in List.from_maybe(opacity)]
size = int(Number(size).value) if size else 0
if size < 1 or size > 512:
size = 200
monochrome = bool(monochrome)
background = Color(background).value if background else None
new_image = Image.new(mode='RGBA', size=(size, size))
pixdata = new_image.load()
_image_noise(pixdata, size, density, intensity, color, opacity, monochrome)
if not inline:
key = (size, density, intensity, color, opacity, monochrome)
asset_file = 'noise-%s%sx%s' % ('mono-' if monochrome else '', size,
size)
# asset_file += '-[%s][%s]' % ('-'.join(to_str(s).replace('.', '_') for s in density or []), '-'.join(to_str(s).replace('.', '_') for s in opacity or []))
asset_file += '-' + base64.urlsafe_b64encode(
hashlib.md5(repr(key)).digest()).rstrip('=').replace('-', '_')
asset_file += '.png'
asset_path = os.path.join(
config.ASSETS_ROOT or os.path.join(config.STATIC_ROOT, 'assets'),
asset_file)
try:
new_image.save(asset_path)
except IOError:
log.exception("Error while saving image")
inline = True # Retry inline version
url = '%s%s' % (config.ASSETS_URL, asset_file)
if inline:
output = six.BytesIO()
new_image.save(output, format='PNG')
contents = output.getvalue()
output.close()
url = 'data:image/png;base64,' + base64.b64encode(contents)
inline = 'url("%s")' % escape(url)
return String.unquoted(inline)
def test_reference_operations():
"""Test the example expressions in the reference document:
http://sass-lang.com/docs/yardoc/file.SASS_REFERENCE.html#operations
"""
# TODO: break this into its own file and add the entire reference guide
# Need to build the calculator manually to get at its namespace, and need
# to use calculate() instead of evaluate_expression() so interpolation
# works
ns = CoreExtension.namespace.derive()
calc = Calculator(ns).calculate
# Simple example
assert calc('1in + 8pt') == Number(1.1111111111111112, "in")
# Division
ns.set_variable('$width', Number(1000, "px"))
ns.set_variable('$font-size', Number(12, "px"))
ns.set_variable('$line-height', Number(30, "px"))
assert calc('10px/8px') == String('10px / 8px') # plain CSS; no division
assert calc('$width/2') == Number(500,
"px") # uses a variable; does division
assert calc('(500px/2)') == Number(250, "px") # uses parens; does division
assert calc('5px + 8px/2px') == Number(9, "px") # uses +; does division
# TODO, again: Ruby Sass correctly renders this without spaces
assert calc('#{$font-size}/#{$line-height}') == String('12px / 30px')
# uses #{}; does no division
# Color operations
ns.set_variable('$translucent-red', Color.from_rgb(1, 0, 0, 0.5))
ns.set_variable('$green', Color.from_name('lime'))
assert calc('#010203 + #040506') == Color.from_hex('#050709')
assert calc('#010203 * 2') == Color.from_hex('#020406')
assert calc(
'rgba(255, 0, 0, 0.75) + rgba(0, 255, 0, 0.75)') == Color.from_rgb(
1, 1, 0, 0.75)
assert calc('opacify($translucent-red, 0.3)') == Color.from_rgb(
1, 0, 0, 0.8)
assert calc('transparentize($translucent-red, 0.25)') == Color.from_rgb(
1, 0, 0, 0.25)
assert calc(
"progid:DXImageTransform.Microsoft.gradient(enabled='false', startColorstr='#{ie-hex-str($green)}', endColorstr='#{ie-hex-str($translucent-red)}')"
).render(
) == "progid:DXImageTransform.Microsoft.gradient(enabled='false', startColorstr='#FF00FF00', endColorstr='#80FF0000')"
# String operations
ns.set_variable('$value', Null())
assert_strict_string_eq(calc('e + -resize'), String('e-resize',
quotes=None))
assert_strict_string_eq(calc('"Foo " + Bar'), String('Foo Bar',
quotes='"'))
assert_strict_string_eq(calc('sans- + "serif"'),
String('sans-serif', quotes=None))
assert calc('3px + 4px auto') == List(
[Number(7, "px"), String('auto', quotes=None)])
assert_strict_string_eq(calc('"I ate #{5 + 10} pies!"'),
String('I ate 15 pies!', quotes='"'))
assert_strict_string_eq(calc('"I ate #{$value} pies!"'),
String('I ate pies!', quotes='"'))
def grad_point(*p):
pos = set()
hrz = vrt = Number(0.5, '%')
for _p in p:
pos.update(String.unquoted(_p).value.split())
if 'left' in pos:
hrz = Number(0, '%')
elif 'right' in pos:
hrz = Number(1, '%')
if 'top' in pos:
vrt = Number(0, '%')
elif 'bottom' in pos:
vrt = Number(1, '%')
return List([v for v in (hrz, vrt) if v is not None])
def style_scss(self, *path):
css_namespace = Namespace()
for key, value in self.settings['keys'].items():
if isinstance(value, LCText):
css_value = String(value)
elif isinstance(value, LCColour):
css_value = Color.from_hex(value)
elif isinstance(value, LCBool):
css_value = Boolean(value.simple())
elif isinstance(value, LCSpin):
css_value = Number(value.simple())
else:
raise ValueError("Unable to find comparable values")
css_namespace.set_variable('${}'.format(key), css_value)
cherrypy.response.headers['Content-Type'] = 'text/css'
with open(os.path.join(self.settings['location'], *path), 'r') as css:
css_content = css.read()
compiler = Compiler(namespace=css_namespace, output_style='nested')
# Something wrong with PyScss,
# Syntax error: Found u'100%' but expected one of ADD.
# Doesn't happen on next attempt, so we are doing bad thing
attempts = 0
while attempts < 100:
try:
attempts += 1
ret_string = compiler.compile_string(css_content)
return ret_string
except Exception as exc:
if attempts == 100:
log.debug(exc)
def adjust_color(
color, red=None, green=None, blue=None,
hue=None, saturation=None, lightness=None, alpha=None):
do_rgb = red or green or blue
do_hsl = hue or saturation or lightness
if do_rgb and do_hsl:
raise ValueError(
"Can't adjust both RGB and HSL channels at the same time")
zero = Number(0)
a = color.alpha + (alpha or zero).value
if do_rgb:
r, g, b = color.rgba[:3]
channels = [
current + (adjustment or zero).value / 255
for (current, adjustment) in zip(color.rgba, (red, green, blue))]
return Color.from_rgb(*channels, alpha=a)
else:
h, s, l = color.hsl
h = (h + (hue or zero).value / 360) % 1
s += _interpret_percentage(saturation or zero, relto=100, clamp=False)
l += _interpret_percentage(lightness or zero, relto=100, clamp=False)
return Color.from_hsl(h, s, l, a)
def image_height(image):
"""
Returns the height of the image found at the path supplied by `image`
relative to your project's images directory.
"""
if not Image:
raise Exception("Images manipulation require PIL")
filepath = String.unquoted(image).value
path = None
try:
height = _image_size_cache[filepath][1]
except KeyError:
height = 0
IMAGES_ROOT = _images_root()
if callable(IMAGES_ROOT):
try:
_file, _storage = list(IMAGES_ROOT(filepath))[0]
except IndexError:
pass
else:
path = _storage.open(_file)
else:
_path = os.path.join(IMAGES_ROOT, filepath.strip('/'))
if os.path.exists(_path):
path = open(_path, 'rb')
if path:
image = Image.open(path)
size = image.size
height = size[1]
_image_size_cache[filepath] = size
return Number(height, 'px')
def image_width(image):
"""
Returns the width of the image found at the path supplied by `image`
relative to your project's images directory.
"""
if not Image:
raise SassMissingDependency('PIL', 'image manipulation')
image_size_cache = _get_cache('image_size_cache')
filepath = String.unquoted(image).value
path = None
try:
width = image_size_cache[filepath][0]
except KeyError:
width = 0
IMAGES_ROOT = _images_root()
if callable(IMAGES_ROOT):
try:
_file, _storage = list(IMAGES_ROOT(filepath))[0]
except IndexError:
pass
else:
path = _storage.open(_file)
else:
_path = os.path.join(IMAGES_ROOT, filepath.strip(os.sep))
if os.path.exists(_path):
path = open(_path, 'rb')
if path:
image = Image.open(path)
size = image.size
width = size[0]
image_size_cache[filepath] = size
return Number(width, 'px')
def enumerate_(prefix, frm, through, separator='-'):
separator = String.unquoted(separator).value
try:
frm = int(getattr(frm, 'value', frm))
except ValueError:
frm = 1
try:
through = int(getattr(through, 'value', through))
except ValueError:
through = frm
if frm > through:
# DEVIATION: allow reversed enumerations (and ranges as range() uses enumerate, like '@for .. from .. through')
frm, through = through, frm
rev = reversed
else:
rev = lambda x: x
ret = []
for i in rev(range(frm, through + 1)):
if prefix and prefix.value:
ret.append(
String.unquoted(prefix.value + separator + six.text_type(i)))
else:
ret.append(Number(i))
return List(ret, use_comma=True)
def kwatom(self):
_token_ = self._peek(self.kwatom_rsts)
if _token_ == '":"':
pass
elif _token_ == 'KWID':
KWID = self._scan('KWID')
return Literal(parse_bareword(KWID))
elif _token_ == 'KWNUM':
KWNUM = self._scan('KWNUM')
UNITS = None
if self._peek(self.kwatom_rsts_) == 'UNITS':
UNITS = self._scan('UNITS')
return Literal(Number(float(KWNUM), unit=UNITS))
elif _token_ == 'KWSTR':
KWSTR = self._scan('KWSTR')
return Literal(String(KWSTR[1:-1], quotes="'"))
elif _token_ == 'KWQSTR':
KWQSTR = self._scan('KWQSTR')
return Literal(String(KWQSTR[1:-1], quotes='"'))
elif _token_ == 'KWCOLOR':
KWCOLOR = self._scan('KWCOLOR')
return Literal(Color.from_hex(COLOR, literal=True))
else: # == 'KWVAR'
KWVAR = self._scan('KWVAR')
return Variable(KWVAR)
def test_comparison_null():
null = Null()
assert null == null
assert null != Number(0)
with pytest.raises(TypeError):
null < null
def test_linear_gradient():
# Set up some values
to = String.unquoted('to')
bottom = String.unquoted('bottom')
left = String.unquoted('left')
red = Color.from_name('red')
blue = Color.from_name('blue')
start = Number(0, "%")
middle = Number(50, "%")
end = Number(100, "%")
assert (linear_gradient(left, List((red, start)), List(
(blue, middle))) == String('linear-gradient(left, red, blue 50%)'))
assert (linear_gradient(List((to, bottom)), blue, List(
(red, end))) == String('linear-gradient(to bottom, blue, red)'))
def test_addition(calc):
assert calc('123 + 456') == Number(579)
assert calc('1px + 2px') == Number(3, "px")
assert calc('123 + abc') == String('123abc')
assert calc('abc + 123') == String('abc123')
assert calc('abc + def') == String('abcdef')
assert calc('abc + "def"') == String('abcdef')
ret = calc('"abc" + def')
assert ret == String('abcdef')
assert ret.quotes == '"'
ret = calc('"abc" + "def"')
assert ret == String('abcdef')
assert ret.quotes == '"'
assert calc('#010305 + #050301') == Color.from_hex('#060606')
assert calc('#ffffff + #ffffff') == Color.from_name('white')
def image_color(color, width=1, height=1):
if not Image:
raise Exception("Images manipulation require PIL")
w = int(Number(width).value)
h = int(Number(height).value)
if w <= 0 or h <= 0:
raise ValueError
new_image = Image.new(
mode='RGB' if color.alpha == 1 else 'RGBA',
size=(w, h),
color=color.rgba255,
)
output = six.BytesIO()
new_image.save(output, format='PNG')
contents = output.getvalue()
output.close()
url = make_data_url('image/png', contents)
inline = 'url("%s")' % escape(url)
return String.unquoted(inline)
def _position(opposite, positions):
if positions is None:
positions = DEFAULT_POSITION
else:
positions = List.from_maybe(positions)
ret = []
for pos in positions:
if isinstance(pos, (String, six.string_types)):
pos_value = getattr(pos, 'value', pos)
if pos_value in OPPOSITE_POSITIONS:
if opposite:
ret.append(OPPOSITE_POSITIONS[pos_value])
else:
ret.append(pos)
continue
elif pos_value == 'to':
# Gradient syntax keyword; leave alone
ret.append(pos)
continue
elif isinstance(pos, Number):
if pos.is_simple_unit('%'):
if opposite:
ret.append(Number(100 - pos.value, '%'))
else:
ret.append(pos)
continue
elif pos.is_simple_unit('deg'):
# TODO support other angle types?
if opposite:
ret.append(Number((pos.value + 180) % 360, 'deg'))
else:
ret.append(pos)
continue
if opposite:
log.warn("Can't find opposite for position %r" % (pos, ))
ret.append(pos)
return List(ret, use_comma=False).maybe()
def test_subtraction():
assert Number(123) - Number(456) == Number(-333)
assert Number(456) - Number(123) == Number(333)
# TODO test that subtracting e.g. strings doesn't work
assert Color.from_hex('#0f0f0f') - Color.from_hex(
'#050505') == Color.from_hex('#0a0a0a')
def test_parse_bang_important(calc):
# The !important flag is treated as part of a spaced list.
assert calc('40px !important') == List([
Number(40, 'px'),
String.unquoted('!important'),
],
use_comma=False)
# And is allowed anywhere in the string.
assert calc('foo !important bar') == List([
String('foo'),
String('!important'),
String('bar'),
],
use_comma=False)
# And may have space before the !.
assert calc('40px ! important') == List([
Number(40, 'px'),
String.unquoted('!important'),
],
use_comma=False)
def test_alpha_opacity():
assert calc('alpha(black)') == Number(1.)
assert calc('alpha(rgba(black, 0.5))') == Number(0.5)
assert calc('alpha(rgba(black, 0))') == Number(0.)
# opacity is a synonym
assert calc('opacity(black)') == Number(1.)
assert calc('opacity(rgba(black, 0.5))') == Number(0.5)
assert calc('opacity(rgba(black, 0))') == Number(0.)
def test_parse_special_functions():
ns = CoreExtension.namespace.derive()
calc = Calculator(ns).calculate
# expression() allows absolutely any old garbage inside
# TODO we can't deal with an unmatched { due to the block locator, but ruby
# can
for gnarly_expression in (
"not ~* remotely *~ valid {syntax}",
"expression( ( -0 - floater.offsetHeight + ( document"
".documentElement.clientHeight ? document.documentElement"
".clientHeight : document.body.clientHeight ) + ( ignoreMe"
" = document.documentElement.scrollTop ? document"
".documentElement.scrollTop : document.body.scrollTop ) ) +"
" 'px' )"):
expr = 'expression(' + gnarly_expression + ')'
assert calc(expr).render() == expr
# alpha() doubles as a special function if it contains opacity=n, the IE
# filter syntax
assert calc('alpha(black)') == Number(1)
assert calc('alpha(opacity = 5)') == Function('opacity=5', 'alpha')
assert calc('alpha(opacity = 5)').render() == 'alpha(opacity=5)'
# url() allows both an opaque URL and a Sass expression, based on some
# heuristics
ns.set_variable('$foo', String.unquoted('foo'))
assert calc('url($foo)').render() == "url(foo)"
assert calc('url(#{$foo}foo)').render() == "url(foofoo)"
assert calc('url($foo + $foo)').render() == "url(foofoo)"
# TODO this one doesn't work if $foo has quotes; Url.render() tries to
# escape them. which i'm not sure is wrong, but we're getting into
# territory where it's obvious bad output...
assert calc('url($foo + #{$foo})').render() == "url(foo + foo)"
assert calc('url(foo #{$foo} foo)').render() == "url(foo foo foo)"
with pytest.raises(SassSyntaxError):
# Starting with #{} means it's a url, which can't contain spaces
calc('url(#{$foo} foo)')
with pytest.raises(SassSyntaxError):
# Or variables
calc('url(#{$foo}$foo)')
with pytest.raises(SassSyntaxError):
# This looks like a URL too
calc('url(foo#{$foo} foo)')
def log_(number, base=None):
if not isinstance(number, Number):
raise TypeError("Expected number, got %r" % (number, ))
elif not number.is_unitless:
raise ValueError("Expected unitless number, got %r" % (number, ))
if base is None:
pass
elif not isinstance(base, Number):
raise TypeError("Expected number, got %r" % (base, ))
elif not base.is_unitless:
raise ValueError("Expected unitless number, got %r" % (base, ))
if base is None:
ret = math.log(number.value)
else:
ret = math.log(number.value, base.value)
return Number(ret)
def atom(self):
_token_ = self._peek(self.u_expr_chks)
if _token_ == 'LPAR':
LPAR = self._scan('LPAR')
_token_ = self._peek(self.atom_rsts)
if _token_ not in self.argspec_item_chks:
expr_map = self.expr_map()
v = expr_map
else: # in self.argspec_item_chks
expr_lst = self.expr_lst()
v = expr_lst
RPAR = self._scan('RPAR')
return Parentheses(v)
elif _token_ == 'FNCT':
FNCT = self._scan('FNCT')
LPAR = self._scan('LPAR')
argspec = self.argspec()
RPAR = self._scan('RPAR')
return CallOp(FNCT, argspec)
elif _token_ == 'BANG_IMPORTANT':
BANG_IMPORTANT = self._scan('BANG_IMPORTANT')
return Literal(String(BANG_IMPORTANT, quotes=None))
elif _token_ == 'ID':
ID = self._scan('ID')
return Literal(parse_bareword(ID))
elif _token_ == 'NUM':
NUM = self._scan('NUM')
UNITS = None
if self._peek(self.atom_rsts_) == 'UNITS':
UNITS = self._scan('UNITS')
return Literal(Number(float(NUM), unit=UNITS))
elif _token_ == 'STR':
STR = self._scan('STR')
return Literal(String(STR[1:-1], quotes="'"))
elif _token_ == 'QSTR':
QSTR = self._scan('QSTR')
return Literal(String(QSTR[1:-1], quotes='"'))
elif _token_ == 'COLOR':
COLOR = self._scan('COLOR')
return Literal(Color.from_hex(COLOR, literal=True))
else: # == 'VAR'
VAR = self._scan('VAR')
return Variable(VAR)
def background_brushed(density=None, intensity=None, color=None, opacity=None, size=None, monochrome=False, direction=(), spread=(), background=None, inline=False):
if not Image:
raise Exception("Images manipulation require PIL")
density = [Number(v).value for v in List.from_maybe(density)]
intensity = [Number(v).value for v in List.from_maybe(intensity)]
color = [Color(v).value for v in List.from_maybe(color) if v]
opacity = [Number(v).value for v in List.from_maybe(opacity)]
size = int(Number(size).value) if size else -1
if size < 0 or size > 512:
size = 200
monochrome = bool(monochrome)
direction = [Number(v).value for v in List.from_maybe(direction)]
spread = [Number(v).value for v in List.from_maybe(spread)]
background = Color(background).value if background else None
new_image = Image.new(
mode='RGBA',
size=(size, size)
)
pixdata = new_image.load()
_image_brushed(pixdata, size, density, intensity, color, opacity, monochrome, direction, spread, background)
if not inline:
key = (size, density, intensity, color, opacity, monochrome, direction, spread, background)
asset_file = 'brushed-%s%sx%s' % ('mono-' if monochrome else '', size, size)
# asset_file += '-[%s][%s][%s]' % ('-'.join(to_str(s).replace('.', '_') for s in density or []), '-'.join(to_str(s).replace('.', '_') for s in opacity or []), '-'.join(to_str(s).replace('.', '_') for s in direction or []))
asset_file += '-' + make_filename_hash(key)
asset_file += '.png'
asset_path = os.path.join(config.ASSETS_ROOT or os.path.join(config.STATIC_ROOT, 'assets'), asset_file)
try:
new_image.save(asset_path)
except IOError:
log.exception("Error while saving image")
inline = True # Retry inline version
url = '%s%s' % (config.ASSETS_URL, asset_file)
if inline:
output = six.BytesIO()
new_image.save(output, format='PNG')
contents = output.getvalue()
output.close()
url = make_data_url('image/png', contents)
inline = 'url("%s")' % escape(url)
return String.unquoted(inline)
def test_comparison_numeric():
lo = Number(123)
hi = Number(456)
assert lo < hi
assert lo <= hi
assert lo <= lo
assert hi > lo
assert hi >= lo
assert hi >= hi
assert lo == lo
assert lo != hi
# Same tests, negated
assert not lo > hi
assert not lo >= hi
assert not hi < lo
assert not hi <= lo
assert not lo != lo
assert not lo == hi
# Numbers with units should also auto-cast numbers with units
units = Number(123, "px")
plain = Number(123)
assert units == plain
assert units <= plain
assert units >= plain
assert not units != plain
assert not units < plain
assert not units > plain
# Incompatible units have... rules.
ems = Number(100, "em")
pxs = Number(100, "px")
with pytest.raises(ValueError):
ems < pxs
with pytest.raises(ValueError):
ems > pxs
with pytest.raises(ValueError):
ems <= pxs
with pytest.raises(ValueError):
ems >= pxs
assert not ems == pxs
assert ems != pxs
def to_lower_case(string):
expect_type(string, String)
return String(string.value.lower(), quotes=string.quotes)
# ------------------------------------------------------------------------------
# Number functions
@ns.declare
def percentage(value):
expect_type(value, Number, unit=None)
return value * Number(100, unit='%')
ns.set_function('abs', 1, Number.wrap_python_function(abs))
ns.set_function('round', 1, Number.wrap_python_function(round))
ns.set_function('ceil', 1, Number.wrap_python_function(math.ceil))
ns.set_function('floor', 1, Number.wrap_python_function(math.floor))
# ------------------------------------------------------------------------------
# List functions
def __parse_separator(separator, default_from=None):
if separator is None:
separator = 'auto'
separator = String.unquoted(separator).value
if separator == 'comma':
return True
expect_type(string, String)
return String(string.value.lower(), quotes=string.quotes)
# ------------------------------------------------------------------------------
# Number functions
@ns.declare
def percentage(value):
expect_type(value, Number, unit=None)
return value * Number(100, unit="%")
ns.set_function("abs", 1, Number.wrap_python_function(abs))
ns.set_function("round", 1, Number.wrap_python_function(round))
ns.set_function("ceil", 1, Number.wrap_python_function(math.ceil))
ns.set_function("floor", 1, Number.wrap_python_function(math.floor))
# ------------------------------------------------------------------------------
# List functions
def __parse_separator(separator, default_from=None):
if separator is None:
separator = "auto"
separator = String.unquoted(separator).value
if separator == "comma":
raise ValueError("Expected unitless number, got %r" % (base,))
if base is None:
ret = math.log(number.value)
else:
ret = math.log(number.value, base.value)
return Number(ret)
@register('pow', 2)
def pow(number, exponent):
return number ** exponent
COMPASS_HELPERS_LIBRARY.add(Number.wrap_python_function(math.sqrt), 'sqrt', 1)
COMPASS_HELPERS_LIBRARY.add(Number.wrap_python_function(math.sin), 'sin', 1)
COMPASS_HELPERS_LIBRARY.add(Number.wrap_python_function(math.cos), 'cos', 1)
COMPASS_HELPERS_LIBRARY.add(Number.wrap_python_function(math.tan), 'tan', 1)
# ------------------------------------------------------------------------------
# Fonts
def _fonts_root():
return config.STATIC_ROOT if config.FONTS_ROOT is None else config.FONTS_ROOT
def _font_url(path, only_path=False, cache_buster=True, inline=False):
filepath = String.unquoted(path).value
file = None
return String(arg.value, quotes='"')
else:
return String(arg.render(), quotes='"')
# ------------------------------------------------------------------------------
# Number functions
@register("percentage", 1)
def percentage(value):
expect_type(value, Number, unit=None)
return value * Number(100, unit="%")
CORE_LIBRARY.add(Number.wrap_python_function(abs), "abs", 1)
CORE_LIBRARY.add(Number.wrap_python_function(round), "round", 1)
CORE_LIBRARY.add(Number.wrap_python_function(math.ceil), "ceil", 1)
CORE_LIBRARY.add(Number.wrap_python_function(math.floor), "floor", 1)
# ------------------------------------------------------------------------------
# List functions
def __parse_separator(separator, default_from=None):
if separator is None:
return None
separator = String.unquoted(separator).value
if separator == "comma":
return True
@register('to-lower-case', 1)
def to_lower_case(string):
expect_type(string, String)
return String(string.value.lower(), quotes=string.quotes)
# ------------------------------------------------------------------------------
# Number functions
@register('percentage', 1)
def percentage(value):
expect_type(value, Number, unit=None)
return value * Number(100, unit='%')
CORE_LIBRARY.add(Number.wrap_python_function(abs), 'abs', 1)
CORE_LIBRARY.add(Number.wrap_python_function(round), 'round', 1)
CORE_LIBRARY.add(Number.wrap_python_function(math.ceil), 'ceil', 1)
CORE_LIBRARY.add(Number.wrap_python_function(math.floor), 'floor', 1)
# ------------------------------------------------------------------------------
# List functions
def __parse_separator(separator, default_from=None):
if separator is None:
separator = 'auto'
separator = String.unquoted(separator).value
if separator == 'comma':
return True
def sprite_map(g, **kwargs):
"""
Generates a sprite map from the files matching the glob pattern.
Uses the keyword-style arguments passed in to control the placement.
$direction - Sprite map layout. Can be `vertical` (default), `horizontal`, `diagonal` or `smart`.
$position - For `horizontal` and `vertical` directions, the position of the sprite. (defaults to `0`)
$<sprite>-position - Position of a given sprite.
$padding, $spacing - Adds paddings to sprites (top, right, bottom, left). (defaults to `0, 0, 0, 0`)
$<sprite>-padding, $<sprite>-spacing - Padding for a given sprite.
$dst-color - Together with `$src-color`, forms a map of source colors to be converted to destiny colors (same index of `$src-color` changed to `$dst-color`).
$<sprite>-dst-color - Destiny colors for a given sprite. (defaults to `$dst-color`)
$src-color - Selects source colors to be converted to the corresponding destiny colors. (defaults to `black`)
$<sprite>-dst-color - Source colors for a given sprite. (defaults to `$src-color`)
$collapse - Collapses every image in the sprite map to a fixed size (`x` and `y`).
$collapse-x - Collapses a size for `x`.
$collapse-y - Collapses a size for `y`.
"""
if not Image:
raise Exception("Images manipulation require PIL")
now_time = time.time()
g = String(g, quotes=None).value
if g in sprite_maps:
sprite_maps[glob]['*'] = now_time
elif '..' not in g: # Protect against going to prohibited places...
if callable(config.STATIC_ROOT):
glob_path = g
rfiles = files = sorted(config.STATIC_ROOT(g))
else:
glob_path = os.path.join(config.STATIC_ROOT, g)
files = glob.glob(glob_path)
files = sorted((f, None) for f in files)
rfiles = [(rf[len(config.STATIC_ROOT):], s) for rf, s in files]
if not files:
log.error("Nothing found at '%s'", glob_path)
return String.unquoted('')
map_name = os.path.normpath(os.path.dirname(g)).replace('\\', '_').replace('/', '_')
key = [f for (f, s) in files] + [repr(kwargs), config.ASSETS_URL]
key = map_name + '-' + make_filename_hash(key)
asset_file = key + '.png'
ASSETS_ROOT = config.ASSETS_ROOT or os.path.join(config.STATIC_ROOT, 'assets')
asset_path = os.path.join(ASSETS_ROOT, asset_file)
cache_path = os.path.join(config.CACHE_ROOT or ASSETS_ROOT, asset_file + '.cache')
inline = Boolean(kwargs.get('inline', False))
sprite_map = None
asset = None
file_asset = None
inline_asset = None
if os.path.exists(asset_path) or inline:
try:
save_time, file_asset, inline_asset, sprite_map, sizes = pickle.load(open(cache_path))
if file_asset:
sprite_maps[file_asset.render()] = sprite_map
if inline_asset:
sprite_maps[inline_asset.render()] = sprite_map
if inline:
asset = inline_asset
else:
asset = file_asset
except:
pass
if sprite_map:
for file_, storage in files:
_time = getmtime(file_, storage)
if save_time < _time:
if _time > now_time:
log.warning("File '%s' has a date in the future (cache ignored)" % file_)
sprite_map = None # Invalidate cached sprite map
break
if sprite_map is None or asset is None:
cache_buster = Boolean(kwargs.get('cache_buster', True))
direction = String.unquoted(kwargs.get('direction', config.SPRTE_MAP_DIRECTION)).value
repeat = String.unquoted(kwargs.get('repeat', 'no-repeat')).value
collapse = kwargs.get('collapse', Number(0))
if isinstance(collapse, List):
collapse_x = int(Number(collapse[0]).value)
collapse_y = int(Number(collapse[-1]).value)
else:
collapse_x = collapse_y = int(Number(collapse).value)
if 'collapse_x' in kwargs:
collapse_x = int(Number(kwargs['collapse_x']).value)
if 'collapse_y' in kwargs:
collapse_y = int(Number(kwargs['collapse_y']).value)
position = Number(kwargs.get('position', 0))
if not position.is_simple_unit('%') and position.value > 1:
position = position.value / 100.0
else:
position = position.value
if position < 0:
position = 0.0
elif position > 1:
position = 1.0
padding = kwargs.get('padding', kwargs.get('spacing', Number(0)))
padding = [int(Number(v).value) for v in List.from_maybe(padding)]
padding = (padding * 4)[:4]
dst_colors = kwargs.get('dst_color')
dst_colors = [list(Color(v).value[:3]) for v in List.from_maybe(dst_colors) if v]
src_colors = kwargs.get('src_color', Color.from_name('black'))
src_colors = [tuple(Color(v).value[:3]) for v in List.from_maybe(src_colors)]
len_colors = max(len(dst_colors), len(src_colors))
dst_colors = (dst_colors * len_colors)[:len_colors]
src_colors = (src_colors * len_colors)[:len_colors]
def images(f=lambda x: x):
for file_, storage in f(files):
if storage is not None:
_file = storage.open(file_)
else:
_file = file_
_image = Image.open(_file)
yield _image
names = tuple(os.path.splitext(os.path.basename(file_))[0] for file_, storage in files)
has_dst_colors = False
all_dst_colors = []
all_src_colors = []
all_positions = []
all_paddings = []
for name in names:
name = name.replace('-', '_')
_position = kwargs.get(name + '_position')
if _position is None:
_position = position
else:
_position = Number(_position)
if not _position.is_simple_unit('%') and _position.value > 1:
_position = _position.value / 100.0
else:
_position = _position.value
if _position < 0:
_position = 0.0
elif _position > 1:
_position = 1.0
all_positions.append(_position)
_padding = kwargs.get(name + '_padding', kwargs.get(name + '_spacing'))
if _padding is None:
_padding = padding
else:
_padding = [int(Number(v).value) for v in List.from_maybe(_padding)]
_padding = (_padding * 4)[:4]
all_paddings.append(_padding)
_dst_colors = kwargs.get(name + '_dst_color')
if _dst_colors is None:
_dst_colors = dst_colors
if dst_colors:
has_dst_colors = True
else:
has_dst_colors = True
_dst_colors = [list(Color(v).value[:3]) for v in List.from_maybe(_dst_colors) if v]
_src_colors = kwargs.get(name + '_src_color', Color.from_name('black'))
if _src_colors is None:
_src_colors = src_colors
else:
_src_colors = [tuple(Color(v).value[:3]) for v in List.from_maybe(_src_colors)]
_len_colors = max(len(_dst_colors), len(_src_colors))
_dst_colors = (_dst_colors * _len_colors)[:_len_colors]
_src_colors = (_src_colors * _len_colors)[:_len_colors]
all_dst_colors.append(_dst_colors)
all_src_colors.append(_src_colors)
sizes = tuple((collapse_x or i.size[0], collapse_y or i.size[1]) for i in images())
if direction == 'horizontal':
layout = HorizontalSpritesLayout(sizes, all_paddings, position=all_positions)
elif direction == 'vertical':
layout = VerticalSpritesLayout(sizes, all_paddings, position=all_positions)
elif direction == 'diagonal':
layout = DiagonalSpritesLayout(sizes, all_paddings)
elif direction == 'smart':
layout = PackedSpritesLayout(sizes, all_paddings)
else:
raise Exception("Invalid direction %r" % (direction,))
layout_positions = list(layout)
new_image = Image.new(
mode='RGBA',
size=(layout.width, layout.height),
color=(0, 0, 0, 0)
)
useless_dst_color = has_dst_colors
offsets_x = []
offsets_y = []
for i, image in enumerate(images()):
x, y, width, height, cssx, cssy, cssw, cssh = layout_positions[i]
iwidth, iheight = image.size
if has_dst_colors:
pixdata = image.load()
for _y in xrange(iheight):
for _x in xrange(iwidth):
pixel = pixdata[_x, _y]
a = pixel[3] if len(pixel) == 4 else 255
if a:
rgb = pixel[:3]
for j, dst_color in enumerate(all_dst_colors[i]):
if rgb == all_src_colors[i][j]:
new_color = tuple([int(c) for c in dst_color] + [a])
if pixel != new_color:
pixdata[_x, _y] = new_color
useless_dst_color = False
break
if iwidth != width or iheight != height:
cy = 0
while cy < iheight:
cx = 0
while cx < iwidth:
new_image = alpha_composite(new_image, image, (x, y), (cx, cy, cx + width, cy + height))
cx += width
cy += height
else:
new_image.paste(image, (x, y))
offsets_x.append(cssx)
offsets_y.append(cssy)
if useless_dst_color:
log.warning("Useless use of $dst-color in sprite map for files at '%s' (never used for)" % glob_path)
filetime = int(now_time)
if not inline:
try:
new_image.save(asset_path)
url = '%s%s' % (config.ASSETS_URL, asset_file)
if cache_buster:
url += '?_=%s' % filetime
except IOError:
log.exception("Error while saving image")
inline = True
if inline:
output = six.BytesIO()
new_image.save(output, format='PNG')
contents = output.getvalue()
output.close()
mime_type = 'image/png'
url = make_data_url(mime_type, contents)
url = 'url(%s)' % escape(url)
if inline:
asset = inline_asset = List([String.unquoted(url), String.unquoted(repeat)])
else:
asset = file_asset = List([String.unquoted(url), String.unquoted(repeat)])
# Add the new object:
sprite_map = dict(zip(names, zip(sizes, rfiles, offsets_x, offsets_y)))
sprite_map['*'] = now_time
sprite_map['*f*'] = asset_file
sprite_map['*k*'] = key
sprite_map['*n*'] = map_name
sprite_map['*t*'] = filetime
sizes = zip(files, sizes)
cache_tmp = tempfile.NamedTemporaryFile(delete=False, dir=ASSETS_ROOT)
pickle.dump((now_time, file_asset, inline_asset, sprite_map, sizes), cache_tmp)
cache_tmp.close()
os.rename(cache_tmp.name, cache_path)
# Use the sorted list to remove older elements (keep only 500 objects):
if len(sprite_maps) > MAX_SPRITE_MAPS:
for a in sorted(sprite_maps, key=lambda a: sprite_maps[a]['*'], reverse=True)[KEEP_SPRITE_MAPS:]:
del sprite_maps[a]
log.warning("Exceeded maximum number of sprite maps (%s)" % MAX_SPRITE_MAPS)
sprite_maps[asset.render()] = sprite_map
for file_, size in sizes:
_image_size_cache[file_] = size
# TODO this sometimes returns an empty list, or is never assigned to
return asset
raise ValueError("Expected unitless number, got %r" % (base,))
if base is None:
ret = math.log(number.value)
else:
ret = math.log(number.value, base.value)
return Number(ret)
@ns.declare
def pow(number, exponent):
return number ** exponent
ns.set_function('sqrt', 1, Number.wrap_python_function(math.sqrt))
ns.set_function('sin', 1, Number.wrap_python_function(math.sin))
ns.set_function('cos', 1, Number.wrap_python_function(math.cos))
ns.set_function('tan', 1, Number.wrap_python_function(math.tan))
# ------------------------------------------------------------------------------
# Fonts
def _fonts_root():
return config.STATIC_ROOT if config.FONTS_ROOT is None else config.FONTS_ROOT
def _font_url(path, only_path=False, cache_buster=True, inline=False):
filepath = String.unquoted(path).value
file = None
