Attachment 4633 Details for Bug 26826

cssdiff.py

cssdiff.py (text/x-python), 3.14 KB, created by Florian Best on 2012-09-03 11:31 CEST

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Creator: Florian Best

Created: 2012-09-03 11:31 CEST

Size: 3.14 KB

patch

obsolete

>import sys
>import tinycss
>
>def sel_to_str(selector): return selector.as_css()
>def dec_to_str(declaration): return declaration.value.as_css()
>
>def get_rule_by_selector(selector, file2):
>	selector = sel_to_str(selector)
>	for rule in file2.rules:
>		if selector == sel_to_str(rule.selector):
>			return rule
>	return None
>
>def get_declaration_by_rule(declaration, rule2):
>	declaration = declaration.name
>	for decl in rule2.declarations:
>		if declaration == decl.name:
>			return decl
>	return None
>
>def main(file1, file2, outfile = None):
>	p = tinycss.make_parser() # TODO: CSS3, invalid args, etc?
>	file1 = p.parse_stylesheet_file(file1)
>	file2 = p.parse_stylesheet_file(file2)
>
>	file_1_declarations = {}
>
>	diff = {}
>	for rule in file1.rules:
>		selectorstr = sel_to_str(rule.selector)
>		file_1_declarations[selectorstr] = [d.name for d in rule.declarations]
>		rule2 = get_rule_by_selector(rule.selector, file2)
>		if None == rule2:
>			# the rule/selector does not exists in file2
>			diff[selectorstr] = dict([(d.name, (dec_to_str(d), False)) for d in rule.declarations ]), False
>			continue
>
>		for declaration in rule.declarations:
>			declarationstr = dec_to_str(declaration)
>			decl2 = get_declaration_by_rule(declaration, rule2)
>			if None == decl2:
>				# the declaration does not exists in file2
>				if not selectorstr in diff:
>					diff[selectorstr] = {}, False
>				diff[selectorstr][0][declaration.name] = declarationstr, False
>				continue
>
>			if dec_to_str(declaration) != dec_to_str(decl2):
>				# different value
>				if not selectorstr in diff:
>					diff[selectorstr] = {}, False
>				diff[selectorstr][0][declaration.name] = declarationstr, True
>
>	file_2_declarations = {}
>	for rule in file2.rules:
>		selstr = sel_to_str(rule.selector)
>		file_2_declarations[selstr] = [d.name for d in rule.declarations if d.name not in file_1_declarations.get(selstr, [])]
>
>	# make css file
>	css = ''
>	for selector, (declarations, r_exists) in diff.iteritems():
>		_css = '%s {\n%%s}\n\n' % (selector.replace('%', '%%'))
>		_css_items = ''
>		for dec_name, (dec_value, d_exists) in declarations.iteritems():
>			_css_items += '\t%s: %s%s;\n' % (dec_name, dec_value, ' !important /*overwriting claro.css*/' if d_exists else '')
>		css += _css % _css_items
>
>	css += '\n\n\n/* remove the following values from claro.css */\n\n'
>	for selector, declarations in file_2_declarations.iteritems():
>		if not declarations:
>			continue
>		_css = '%s {\n%%s\n}\n\n' % (selector.replace('%', '%%'))
>		css += _css % '\n'.join(['\t%s: inherit !important;' % (dec_name,) for dec_name in declarations])
>
>	if outfile:
>		with open(outfile, 'w') as fd:
>			fd.write(css)
>	else:
>		print css
>
>	count_sel = len(file_1_declarations) + len(file_2_declarations)
>	count_dec = sum([len(d) for d in file_1_declarations.values() + file_2_declarations.values()])
>	print count_sel, count_dec
>
>if __name__ == '__main__':
>	if len(sys.argv) < 3 or any([h in sys.argv for h in ['-?', '-h', '--help']]):
>		print 'CSS Diff: creates a CSS file which contains all changes between two css files'
>		print 'usage:', sys.argv[0], '<claro.css>', '<umc.css>', '[<outfile>]'
>		sys.exit(1)
>
>	outfile = sys.argv[3] if len(sys.argv) > 3 else None
>	main(sys.argv[1], sys.argv[2], outfile)

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