Wed, 25 May 2022 18:29:49 +0300
move drawState to Document
#!/usr/bin/env python # coding: utf-8 ''' Provides facilities to converting identifier cases. ''' # # Copyright 2015 Teemu Piippo # All rights reserved. # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions # are met: # # 1. Redistributions of source code must retain the above copyright # notice, this list of conditions and the following disclaimer. # 2. Redistributions in binary form must reproduce the above copyright # notice, this list of conditions and the following disclaimer in the # documentation and/or other materials provided with the distribution. # 3. Neither the name of the copyright holder nor the names of its # contributors may be used to endorse or promote products derived from # this software without specific prior written permission. # # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED # TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A # PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER # OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, # EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, # PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR # PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF # LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING # NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS # SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. # import string import re def to_one_case (name, tolower): ''' Convers name to either all uppercase or all lowercase (depending on the truth value of tolower), using underscores as delimiters. ''' result = "" targetSet = (string.ascii_lowercase if tolower else string.ascii_uppercase) + string.digits inverseSet = (string.ascii_uppercase if tolower else string.ascii_lowercase) isUnderscorable = lambda ch: ch in string.ascii_uppercase \ or ch in string.whitespace or ch in string.punctuation previousWasUnderscorable = isUnderscorable (name[0]) for ch in name: if isUnderscorable (ch) and result != "" and not previousWasUnderscorable: result += "_" if ch in inverseSet: result += (ch.lower() if tolower else ch.upper()) elif ch in targetSet: result += ch previousWasUnderscorable = isUnderscorable (ch) return result def to_camel_case (name, java = False): ''' Converts name to camelcase. If java is False, the first letter will be lowercase, otherwise it will be uppercase. ''' result = "" wantUpperCase = False # If it's all uppercase, make it all lowercase so that this algorithm can digest it if name == name.upper(): name = name.lower() for ch in name: if ch == '_': wantUpperCase = True continue if wantUpperCase: if ch in string.ascii_lowercase: ch = ch.upper() wantUpperCase = False result += ch if java: match = re.match (r'^([A-Z]+)([A-Z].+)$', result) if match: result = match.group (1).lower() + match.group (2) else: result = result[0].lower() + result[1:] else: result = result[0].upper() + result[1:] return result case_styles = { 'lower': lambda name: to_one_case (name, tolower=True), 'upper': lambda name: to_one_case (name, tolower=False), 'camel': lambda name: to_camel_case (name, java=False), 'java': lambda name: to_camel_case (name, java=True), } def convert_case (name, style): ''' Converts name to the given style. Style may be one of: - 'lower': 'foo_barBaz' -> 'foo_bar_baz' - 'upper': 'foo_barBaz' -> 'FOO_BAR_BAZ' - 'camel': 'foo_barBaz' -> 'FooBarBaz' - 'java': 'foo_barBaz' -> 'fooBarBaz' ''' try: stylefunc = case_styles[style] except KeyError: validstyles = ', '.join (sorted (case_styles.keys())) raise ValueError ('Unknown style "%s", should be one of: %s' % (style, validstyles)) else: return stylefunc (name)