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from __future__ import absolute_import
from __future__ import print_function
from __future__ import unicode_literals
from __future__ import division
import os
from pathlib import Path
from collections import namedtuple
import six
from scss.calculator import Calculator
from scss.compiler import Compiler
import scss.config as config
from scss.extension.bootstrap import BootstrapExtension
from scss.extension.core import CoreExtension
from scss.extension.compass import CompassExtension
from scss.extension.extra import ExtraExtension
from scss.extension.fonts import FontsExtension
from scss.namespace import Namespace
from scss.scss_meta import (
BUILD_INFO, PROJECT, VERSION, REVISION, URL, AUTHOR, AUTHOR_EMAIL, LICENSE,
)
from scss.source import SourceFile
from scss.types import String
_default_scss_vars = {
'$BUILD-INFO': String.unquoted(BUILD_INFO),
'$PROJECT': String.unquoted(PROJECT),
'$VERSION': String.unquoted(VERSION),
'$REVISION': String.unquoted(REVISION),
'$URL': String.unquoted(URL),
'$AUTHOR': String.unquoted(AUTHOR),
'$AUTHOR-EMAIL': String.unquoted(AUTHOR_EMAIL),
'$LICENSE': String.unquoted(LICENSE),
# unsafe chars will be hidden as vars
'$--doubleslash': String.unquoted('//'),
'$--bigcopen': String.unquoted('/*'),
'$--bigcclose': String.unquoted('*/'),
'$--doubledot': String.unquoted(':'),
'$--semicolon': String.unquoted(';'),
'$--curlybracketopen': String.unquoted('{'),
'$--curlybracketclosed': String.unquoted('}'),
}
SourceFileTuple = namedtuple('SourceFileTuple', ('parent_dir', 'filename'))
# TODO using this should spew an actual deprecation warning
class Scss(object):
"""Original programmatic interface to the compiler.
This class is now DEPRECATED. See :mod:`scss.compiler` for the
replacement.
"""
def __init__(
self, scss_vars=None, scss_opts=None, scss_files=None,
super_selector='', live_errors=False,
library=None, func_registry=None,
search_paths=None):
self.super_selector = super_selector
self._scss_vars = {}
if scss_vars:
calculator = Calculator()
for var_name, value in scss_vars.items():
if isinstance(value, six.string_types):
scss_value = calculator.evaluate_expression(value)
if scss_value is None:
# TODO warning?
scss_value = String.unquoted(value)
else:
scss_value = value
self._scss_vars[var_name] = scss_value
self._scss_opts = scss_opts or {}
self._scss_files = scss_files
self._library = func_registry or library
self._search_paths = search_paths
# If true, swallow compile errors and embed them in the output instead
self.live_errors = live_errors
def compile(
self, scss_string=None, scss_file=None, source_files=None,
super_selector=None, filename=None, is_sass=None,
line_numbers=True, import_static_css=False):
"""Compile Sass to CSS. Returns a single CSS string.
This method is DEPRECATED; see :mod:`scss.compiler` instead.
"""
# Derive our root namespace
self.scss_vars = _default_scss_vars.copy()
if self._scss_vars is not None:
self.scss_vars.update(self._scss_vars)
root_namespace = Namespace(
variables=self.scss_vars,
functions=self._library,
)
# Figure out search paths. Fall back from provided explicitly to
# defined globally to just searching the current directory
search_paths = ['.']
if self._search_paths is not None:
assert not isinstance(self._search_paths, six.string_types), \
"`search_paths` should be an iterable, not a string"
search_paths.extend(self._search_paths)
else:
if config.LOAD_PATHS:
if isinstance(config.LOAD_PATHS, six.string_types):
# Back-compat: allow comma-delimited
search_paths.extend(config.LOAD_PATHS.split(','))
else:
search_paths.extend(config.LOAD_PATHS)
search_paths.extend(self._scss_opts.get('load_paths', []))
# Normalize a few old styles of options
output_style = self._scss_opts.get('style', config.STYLE)
if output_style is True:
output_style = 'compressed'
elif output_style is False:
output_style = 'legacy'
fixed_search_path = []
for path in search_paths:
if isinstance(path, six.string_types):
fixed_search_path.append(Path(path))
else:
fixed_search_path.append(path)
# Build the compiler
compiler = Compiler(
namespace=root_namespace,
extensions=[
CoreExtension,
ExtraExtension,
FontsExtension,
CompassExtension,
BootstrapExtension,
],
search_path=fixed_search_path,
import_static_css=import_static_css,
live_errors=self.live_errors,
generate_source_map=self._scss_opts.get('debug_info', False),
output_style=output_style,
warn_unused_imports=self._scss_opts.get('warn_unused', False),
ignore_parse_errors=config.DEBUG,
loops_have_own_scopes=config.CONTROL_SCOPING,
undefined_variables_fatal=config.FATAL_UNDEFINED,
super_selector=super_selector or self.super_selector,
)
# Gonna add the source files manually
compilation = compiler.make_compilation()
# Inject the files we know about
# TODO how does this work with the expectation of absoluteness
if source_files is not None:
for source in source_files:
compilation.add_source(source)
elif scss_string is not None:
source = SourceFile.from_string(
scss_string,
relpath=filename,
is_sass=is_sass,
)
compilation.add_source(source)
elif scss_file is not None:
# This is now the only way to allow forcibly overriding the
# filename a source "thinks" it is
with open(scss_file, 'rb') as f:
source = SourceFile.from_file(
f,
relpath=filename or scss_file,
is_sass=is_sass,
)
compilation.add_source(source)
# Plus the ones from the constructor
if self._scss_files:
for name, contents in list(self._scss_files.items()):
source = SourceFile.from_string(contents, relpath=name)
compilation.add_source(source)
compiled = compiler.call_and_catch_errors(compilation.run)
self.source_files = list(SourceFileTuple(*os.path.split(s.path)) for s in compilation.source_index.values())
return compiled
# Old, old alias
Compilation = compile
def get_scss_constants(self):
scss_vars = self.root_namespace.variables
return dict(
(k, v) for k, v in scss_vars.items()
if k and (not k.startswith('$') or k[1].isupper())
)
def get_scss_vars(self):
scss_vars = self.root_namespace.variables
return dict(
(k, v) for k, v in scss_vars.items()
if k and not (not k.startswith('$') and k[1].isupper())
)
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