diff options
Diffstat (limited to 'skins/vector/cssjanus')
| -rw-r--r-- | skins/vector/cssjanus/COPYING | 13 | ||||
| -rw-r--r-- | skins/vector/cssjanus/LICENSE | 202 | ||||
| -rw-r--r-- | skins/vector/cssjanus/README | 91 | ||||
| -rw-r--r-- | skins/vector/cssjanus/cssjanus.py | 574 | ||||
| -rw-r--r-- | skins/vector/cssjanus/csslex.py | 114 |
5 files changed, 994 insertions, 0 deletions
diff --git a/skins/vector/cssjanus/COPYING b/skins/vector/cssjanus/COPYING new file mode 100644 index 00000000..3f2c8953 --- /dev/null +++ b/skins/vector/cssjanus/COPYING @@ -0,0 +1,13 @@ + Copyright 2008 Google Inc. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. diff --git a/skins/vector/cssjanus/LICENSE b/skins/vector/cssjanus/LICENSE new file mode 100644 index 00000000..d6456956 --- /dev/null +++ b/skins/vector/cssjanus/LICENSE @@ -0,0 +1,202 @@ + + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. Definitions. + + "License" shall mean the terms and conditions for use, reproduction, + and distribution as defined by Sections 1 through 9 of this document. + + "Licensor" shall mean the copyright owner or entity authorized by + the copyright owner that is granting the License. + + "Legal Entity" shall mean the union of the acting entity and all + other entities that control, are controlled by, or are under common + control with that entity. For the purposes of this definition, + "control" means (i) the power, direct or indirect, to cause the + direction or management of such entity, whether by contract or + otherwise, or (ii) ownership of fifty percent (50%) or more of the + outstanding shares, or (iii) beneficial ownership of such entity. + + "You" (or "Your") shall mean an individual or Legal Entity + exercising permissions granted by this License. + + "Source" form shall mean the preferred form for making modifications, + including but not limited to software source code, documentation + source, and configuration files. + + "Object" form shall mean any form resulting from mechanical + transformation or translation of a Source form, including but + not limited to compiled object code, generated documentation, + and conversions to other media types. + + "Work" shall mean the work of authorship, whether in Source or + Object form, made available under the License, as indicated by a + copyright notice that is included in or attached to the work + (an example is provided in the Appendix below). + + "Derivative Works" shall mean any work, whether in Source or Object + form, that is based on (or derived from) the Work and for which the + editorial revisions, annotations, elaborations, or other modifications + represent, as a whole, an original work of authorship. For the purposes + of this License, Derivative Works shall not include works that remain + separable from, or merely link (or bind by name) to the interfaces of, + the Work and Derivative Works thereof. + + "Contribution" shall mean any work of authorship, including + the original version of the Work and any modifications or additions + to that Work or Derivative Works thereof, that is intentionally + submitted to Licensor for inclusion in the Work by the copyright owner + or by an individual or Legal Entity authorized to submit on behalf of + the copyright owner. For the purposes of this definition, "submitted" + means any form of electronic, verbal, or written communication sent + to the Licensor or its representatives, including but not limited to + communication on electronic mailing lists, source code control systems, + and issue tracking systems that are managed by, or on behalf of, the + Licensor for the purpose of discussing and improving the Work, but + excluding communication that is conspicuously marked or otherwise + designated in writing by the copyright owner as "Not a Contribution." + + "Contributor" shall mean Licensor and any individual or Legal Entity + on behalf of whom a Contribution has been received by Licensor and + subsequently incorporated within the Work. + + 2. Grant of Copyright License. Subject to the terms and conditions of + this License, each Contributor hereby grants to You a perpetual, + worldwide, non-exclusive, no-charge, royalty-free, irrevocable + copyright license to reproduce, prepare Derivative Works of, + publicly display, publicly perform, sublicense, and distribute the + Work and such Derivative Works in Source or Object form. + + 3. Grant of Patent License. Subject to the terms and conditions of + this License, each Contributor hereby grants to You a perpetual, + worldwide, non-exclusive, no-charge, royalty-free, irrevocable + (except as stated in this section) patent license to make, have made, + use, offer to sell, sell, import, and otherwise transfer the Work, + where such license applies only to those patent claims licensable + by such Contributor that are necessarily infringed by their + Contribution(s) alone or by combination of their Contribution(s) + with the Work to which such Contribution(s) was submitted. If You + institute patent litigation against any entity (including a + cross-claim or counterclaim in a lawsuit) alleging that the Work + or a Contribution incorporated within the Work constitutes direct + or contributory patent infringement, then any patent licenses + granted to You under this License for that Work shall terminate + as of the date such litigation is filed. + + 4. Redistribution. You may reproduce and distribute copies of the + Work or Derivative Works thereof in any medium, with or without + modifications, and in Source or Object form, provided that You + meet the following conditions: + + (a) You must give any other recipients of the Work or + Derivative Works a copy of this License; and + + (b) You must cause any modified files to carry prominent notices + stating that You changed the files; and + + (c) You must retain, in the Source form of any Derivative Works + that You distribute, all copyright, patent, trademark, and + attribution notices from the Source form of the Work, + excluding those notices that do not pertain to any part of + the Derivative Works; and + + (d) If the Work includes a "NOTICE" text file as part of its + distribution, then any Derivative Works that You distribute must + include a readable copy of the attribution notices contained + within such NOTICE file, excluding those notices that do not + pertain to any part of the Derivative Works, in at least one + of the following places: within a NOTICE text file distributed + as part of the Derivative Works; within the Source form or + documentation, if provided along with the Derivative Works; or, + within a display generated by the Derivative Works, if and + wherever such third-party notices normally appear. The contents + of the NOTICE file are for informational purposes only and + do not modify the License. You may add Your own attribution + notices within Derivative Works that You distribute, alongside + or as an addendum to the NOTICE text from the Work, provided + that such additional attribution notices cannot be construed + as modifying the License. + + You may add Your own copyright statement to Your modifications and + may provide additional or different license terms and conditions + for use, reproduction, or distribution of Your modifications, or + for any such Derivative Works as a whole, provided Your use, + reproduction, and distribution of the Work otherwise complies with + the conditions stated in this License. + + 5. Submission of Contributions. Unless You explicitly state otherwise, + any Contribution intentionally submitted for inclusion in the Work + by You to the Licensor shall be under the terms and conditions of + this License, without any additional terms or conditions. + Notwithstanding the above, nothing herein shall supersede or modify + the terms of any separate license agreement you may have executed + with Licensor regarding such Contributions. + + 6. Trademarks. This License does not grant permission to use the trade + names, trademarks, service marks, or product names of the Licensor, + except as required for reasonable and customary use in describing the + origin of the Work and reproducing the content of the NOTICE file. + + 7. Disclaimer of Warranty. Unless required by applicable law or + agreed to in writing, Licensor provides the Work (and each + Contributor provides its Contributions) on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or + implied, including, without limitation, any warranties or conditions + of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A + PARTICULAR PURPOSE. You are solely responsible for determining the + appropriateness of using or redistributing the Work and assume any + risks associated with Your exercise of permissions under this License. + + 8. Limitation of Liability. In no event and under no legal theory, + whether in tort (including negligence), contract, or otherwise, + unless required by applicable law (such as deliberate and grossly + negligent acts) or agreed to in writing, shall any Contributor be + liable to You for damages, including any direct, indirect, special, + incidental, or consequential damages of any character arising as a + result of this License or out of the use or inability to use the + Work (including but not limited to damages for loss of goodwill, + work stoppage, computer failure or malfunction, or any and all + other commercial damages or losses), even if such Contributor + has been advised of the possibility of such damages. + + 9. Accepting Warranty or Additional Liability. While redistributing + the Work or Derivative Works thereof, You may choose to offer, + and charge a fee for, acceptance of support, warranty, indemnity, + or other liability obligations and/or rights consistent with this + License. However, in accepting such obligations, You may act only + on Your own behalf and on Your sole responsibility, not on behalf + of any other Contributor, and only if You agree to indemnify, + defend, and hold each Contributor harmless for any liability + incurred by, or claims asserted against, such Contributor by reason + of your accepting any such warranty or additional liability. + + END OF TERMS AND CONDITIONS + + APPENDIX: How to apply the Apache License to your work. + + To apply the Apache License to your work, attach the following + boilerplate notice, with the fields enclosed by brackets "[]" + replaced with your own identifying information. (Don't include + the brackets!) The text should be enclosed in the appropriate + comment syntax for the file format. We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + Copyright [yyyy] [name of copyright owner] + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. diff --git a/skins/vector/cssjanus/README b/skins/vector/cssjanus/README new file mode 100644 index 00000000..9b922156 --- /dev/null +++ b/skins/vector/cssjanus/README @@ -0,0 +1,91 @@ +=CSSJanus= + +_Flips CSS from LTR to an RTL orienation and vice-versa_ + +Author: `Lindsey Simon <elsigh@google.com>` + +==Introduction== + +CSSJanus is CSS parser utility designed to aid the conversion of a website's +layout from left-to-right(LTR) to right-to-left(RTL). The script was born out of +a need to convert CSS for RTL languages when tables are not being used for layout (since tables will automatically reorder TD's in RTL). +CSSJanus will change most of the obvious CSS property names and their values as +well as some not-so-obvious ones (cursor, background-position %, etc...). +The script is designed to offer flexibility to account for cases when you do +not want to change certain rules which exist to account for bidirectional text +display bugs, as well as situations where you may or may not want to flip annotations inside of the background url string. +Note that you can disable CSSJanus from running on an entire class or any +rule within a class by prepending a /* @noflip */ comment before the rule(s) +you want CSSJanus to ignore. + +CSSJanus itself is not always enough to make a website that works in a LTR +language context work in a RTL language all the way, but it is a start. + +==Getting the code== + +View the trunk at: + + http://cssjanus.googlecode.com/svn/trunk/ + +Check out the latest development version anonymously with: + +{{{ + $ svn checkout http://cssjanus.googlecode.com/svn/trunk/ cssjanus +}}} + +==Using== + +Usage: + ./cssjanus.py < file.css > file-rtl.css +Flags: + --swap_left_right_in_url: Fixes "left"/"right" string within urls. + Ex: ./cssjanus.py --swap_left_right_in_url < file.css > file_rtl.css + --swap_ltr_rtl_in_url: Fixes "ltr"/"rtl" string within urls. + Ex: ./cssjanus.py --swap_ltr_rtl_in_url < file.css > file_rtl.css + +If you'd like to make use of the webapp version of cssjanus, you'll need to +download the Google App Engine SDK + http://code.google.com/appengine/downloads.html +and also drop a "django" directory into this directory, with the latest svn +from django. You should be good to go with that setup. Please let me know +otherwise. + +==Bugs, Patches== + +Patches and bug reports are welcome, just please keep the style +consistent with the original source. If you find a bug, please include a diff +of cssjanus_test.py with the bug included as a new unit test which fails. It +will make understanding and fixing the bug easier. + +==Todo== + +* Include some helpers for some typical bidi text solutions? +* Aural CSS (azimuth) swapping? + +==Contributors== + +Additional thanks to Mike Samuel for his work on csslex.py, Andy Perelson for +his help coding and reviewing, Stephen Zabel for his help with i18n and my sanity, +and to Eric Meyer for his thoughtful input. +Thanks to Junyu Wang for the Chinese translation. +Thanks to Masashi Kawashima for the Japanese translation. +Thanks to Taaryk Taar and Tariq Al-Omaireeni for an updated Arabic translation. +Thanks to Jens Meiert for the German translation. + +==License== + +{{{ + Copyright 2008 Google Inc. All Rights Reserved. + + Licensed under the Apache License, Version 2.0 (the 'License'); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an 'AS IS' BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. +}}} diff --git a/skins/vector/cssjanus/cssjanus.py b/skins/vector/cssjanus/cssjanus.py new file mode 100644 index 00000000..dd14bd58 --- /dev/null +++ b/skins/vector/cssjanus/cssjanus.py @@ -0,0 +1,574 @@ +#!/usr/bin/python +# +# Copyright 2008 Google Inc. All Rights Reserved. + +"""Converts a LeftToRight Cascading Style Sheet into a RightToLeft one. + + This is a utility script for replacing "left" oriented things in a CSS file + like float, padding, margin with "right" oriented values. + It also does the opposite. + The goal is to be able to conditionally serve one large, cat'd, compiled CSS + file appropriate for LeftToRight oriented languages and RightToLeft ones. + This utility will hopefully help your structural layout done in CSS in + terms of its RTL compatibility. It will not help with some of the more + complicated bidirectional text issues. +""" + +__author__ = 'elsigh@google.com (Lindsey Simon)' +__version__ = '0.1' + +import logging +import re +import sys +import getopt +import os + +import csslex + +logging.getLogger().setLevel(logging.INFO) + +# Global for the command line flags. +SWAP_LTR_RTL_IN_URL_DEFAULT = False +SWAP_LEFT_RIGHT_IN_URL_DEFAULT = False +FLAGS = {'swap_ltr_rtl_in_url': SWAP_LTR_RTL_IN_URL_DEFAULT, + 'swap_left_right_in_url': SWAP_LEFT_RIGHT_IN_URL_DEFAULT} + +# Generic token delimiter character. +TOKEN_DELIMITER = '~' + +# This is a temporary match token we use when swapping strings. +TMP_TOKEN = '%sTMP%s' % (TOKEN_DELIMITER, TOKEN_DELIMITER) + +# Token to be used for joining lines. +TOKEN_LINES = '%sJ%s' % (TOKEN_DELIMITER, TOKEN_DELIMITER) + +# Global constant text strings for CSS value matches. +LTR = 'ltr' +RTL = 'rtl' +LEFT = 'left' +RIGHT = 'right' + +# This is a lookbehind match to ensure that we don't replace instances +# of our string token (left, rtl, etc...) if there's a letter in front of it. +# Specifically, this prevents replacements like 'background: url(bright.png)'. +LOOKBEHIND_NOT_LETTER = r'(?<![a-zA-Z])' + +# This is a lookahead match to make sure we don't replace left and right +# in actual classnames, so that we don't break the HTML/CSS dependencies. +# Read literally, it says ignore cases where the word left, for instance, is +# directly followed by valid classname characters and a curly brace. +# ex: .column-left {float: left} will become .column-left {float: right} +LOOKAHEAD_NOT_OPEN_BRACE = (r'(?!(?:%s|%s|%s|#|\:|\.|\,|\+|>)*?{)' % + (csslex.NMCHAR, TOKEN_LINES, csslex.SPACE)) + + +# These two lookaheads are to test whether or not we are within a +# background: url(HERE) situation. +# Ref: http://www.w3.org/TR/CSS21/syndata.html#uri +VALID_AFTER_URI_CHARS = r'[\'\"]?%s' % csslex.WHITESPACE +LOOKAHEAD_NOT_CLOSING_PAREN = r'(?!%s?%s\))' % (csslex.URL_CHARS, + VALID_AFTER_URI_CHARS) +LOOKAHEAD_FOR_CLOSING_PAREN = r'(?=%s?%s\))' % (csslex.URL_CHARS, + VALID_AFTER_URI_CHARS) + +# Compile a regex to swap left and right values in 4 part notations. +# We need to match negatives and decimal numeric values. +# ex. 'margin: .25em -2px 3px 0' becomes 'margin: .25em 0 3px -2px'. +POSSIBLY_NEGATIVE_QUANTITY = r'((?:-?%s)|(?:inherit|auto))' % csslex.QUANTITY +POSSIBLY_NEGATIVE_QUANTITY_SPACE = r'%s%s%s' % (POSSIBLY_NEGATIVE_QUANTITY, + csslex.SPACE, + csslex.WHITESPACE) +FOUR_NOTATION_QUANTITY_RE = re.compile(r'%s%s%s%s' % + (POSSIBLY_NEGATIVE_QUANTITY_SPACE, + POSSIBLY_NEGATIVE_QUANTITY_SPACE, + POSSIBLY_NEGATIVE_QUANTITY_SPACE, + POSSIBLY_NEGATIVE_QUANTITY), + re.I) +COLOR = r'(%s|%s)' % (csslex.NAME, csslex.HASH) +COLOR_SPACE = r'%s%s' % (COLOR, csslex.SPACE) +FOUR_NOTATION_COLOR_RE = re.compile(r'(-color%s:%s)%s%s%s(%s)' % + (csslex.WHITESPACE, + csslex.WHITESPACE, + COLOR_SPACE, + COLOR_SPACE, + COLOR_SPACE, + COLOR), + re.I) + +# Compile the cursor resize regexes +CURSOR_EAST_RE = re.compile(LOOKBEHIND_NOT_LETTER + '([ns]?)e-resize') +CURSOR_WEST_RE = re.compile(LOOKBEHIND_NOT_LETTER + '([ns]?)w-resize') + +# Matches the condition where we need to replace the horizontal component +# of a background-position value when expressed in horizontal percentage. +# Had to make two regexes because in the case of position-x there is only +# one quantity, and otherwise we don't want to match and change cases with only +# one quantity. +BG_HORIZONTAL_PERCENTAGE_RE = re.compile(r'background(-position)?(%s:%s)' + '([^%%]*?)(%s)%%' + '(%s(?:%s|%s))' % (csslex.WHITESPACE, + csslex.WHITESPACE, + csslex.NUM, + csslex.WHITESPACE, + csslex.QUANTITY, + csslex.IDENT)) + +BG_HORIZONTAL_PERCENTAGE_X_RE = re.compile(r'background-position-x(%s:%s)' + '(%s)%%' % (csslex.WHITESPACE, + csslex.WHITESPACE, + csslex.NUM)) + +# Matches the opening of a body selector. +BODY_SELECTOR = r'body%s{%s' % (csslex.WHITESPACE, csslex.WHITESPACE) + +# Matches anything up until the closing of a selector. +CHARS_WITHIN_SELECTOR = r'[^\}]*?' + +# Matches the direction property in a selector. +DIRECTION_RE = r'direction%s:%s' % (csslex.WHITESPACE, csslex.WHITESPACE) + +# These allow us to swap "ltr" with "rtl" and vice versa ONLY within the +# body selector and on the same line. +BODY_DIRECTION_LTR_RE = re.compile(r'(%s)(%s)(%s)(ltr)' % + (BODY_SELECTOR, CHARS_WITHIN_SELECTOR, + DIRECTION_RE), + re.I) +BODY_DIRECTION_RTL_RE = re.compile(r'(%s)(%s)(%s)(rtl)' % + (BODY_SELECTOR, CHARS_WITHIN_SELECTOR, + DIRECTION_RE), + re.I) + + +# Allows us to swap "direction:ltr" with "direction:rtl" and +# vice versa anywhere in a line. +DIRECTION_LTR_RE = re.compile(r'%s(ltr)' % DIRECTION_RE) +DIRECTION_RTL_RE = re.compile(r'%s(rtl)' % DIRECTION_RE) + +# We want to be able to switch left with right and vice versa anywhere +# we encounter left/right strings, EXCEPT inside the background:url(). The next +# two regexes are for that purpose. We have alternate IN_URL versions of the +# regexes compiled in case the user passes the flag that they do +# actually want to have left and right swapped inside of background:urls. +LEFT_RE = re.compile('%s(%s)%s%s' % (LOOKBEHIND_NOT_LETTER, + LEFT, + LOOKAHEAD_NOT_CLOSING_PAREN, + LOOKAHEAD_NOT_OPEN_BRACE), + re.I) +RIGHT_RE = re.compile('%s(%s)%s%s' % (LOOKBEHIND_NOT_LETTER, + RIGHT, + LOOKAHEAD_NOT_CLOSING_PAREN, + LOOKAHEAD_NOT_OPEN_BRACE), + re.I) +LEFT_IN_URL_RE = re.compile('%s(%s)%s' % (LOOKBEHIND_NOT_LETTER, + LEFT, + LOOKAHEAD_FOR_CLOSING_PAREN), + re.I) +RIGHT_IN_URL_RE = re.compile('%s(%s)%s' % (LOOKBEHIND_NOT_LETTER, + RIGHT, + LOOKAHEAD_FOR_CLOSING_PAREN), + re.I) +LTR_IN_URL_RE = re.compile('%s(%s)%s' % (LOOKBEHIND_NOT_LETTER, + LTR, + LOOKAHEAD_FOR_CLOSING_PAREN), + re.I) +RTL_IN_URL_RE = re.compile('%s(%s)%s' % (LOOKBEHIND_NOT_LETTER, + RTL, + LOOKAHEAD_FOR_CLOSING_PAREN), + re.I) + +COMMENT_RE = re.compile('(%s)' % csslex.COMMENT, re.I) + +NOFLIP_TOKEN = r'\@noflip' +# The NOFLIP_TOKEN inside of a comment. For now, this requires that comments +# be in the input, which means users of a css compiler would have to run +# this script first if they want this functionality. +NOFLIP_ANNOTATION = r'/\*%s%s%s\*/' % (csslex.WHITESPACE, + NOFLIP_TOKEN, + csslex. WHITESPACE) + +# After a NOFLIP_ANNOTATION, and within a class selector, we want to be able +# to set aside a single rule not to be flipped. We can do this by matching +# our NOFLIP annotation and then using a lookahead to make sure there is not +# an opening brace before the match. +NOFLIP_SINGLE_RE = re.compile(r'(%s%s[^;}]+;?)' % (NOFLIP_ANNOTATION, + LOOKAHEAD_NOT_OPEN_BRACE), + re.I) + +# After a NOFLIP_ANNOTATION, we want to grab anything up until the next } which +# means the entire following class block. This will prevent all of its +# declarations from being flipped. +NOFLIP_CLASS_RE = re.compile(r'(%s%s})' % (NOFLIP_ANNOTATION, + CHARS_WITHIN_SELECTOR), + re.I) + + +class Tokenizer: + """Replaces any CSS comments with string tokens and vice versa.""" + + def __init__(self, token_re, token_string): + """Constructor for the Tokenizer. + + Args: + token_re: A regex for the string to be replace by a token. + token_string: The string to put between token delimiters when tokenizing. + """ + logging.debug('Tokenizer::init token_string=%s' % token_string) + self.token_re = token_re + self.token_string = token_string + self.originals = [] + + def Tokenize(self, line): + """Replaces any string matching token_re in line with string tokens. + + By passing a function as an argument to the re.sub line below, we bypass + the usual rule where re.sub will only replace the left-most occurrence of + a match by calling the passed in function for each occurrence. + + Args: + line: A line to replace token_re matches in. + + Returns: + line: A line with token_re matches tokenized. + """ + line = self.token_re.sub(self.TokenizeMatches, line) + logging.debug('Tokenizer::Tokenize returns: %s' % line) + return line + + def DeTokenize(self, line): + """Replaces tokens with the original string. + + Args: + line: A line with tokens. + + Returns: + line with any tokens replaced by the original string. + """ + + # Put all of the comments back in by their comment token. + for i, original in enumerate(self.originals): + token = '%s%s_%s%s' % (TOKEN_DELIMITER, self.token_string, i + 1, + TOKEN_DELIMITER) + line = line.replace(token, original) + logging.debug('Tokenizer::DeTokenize i:%s w/%s' % (i, token)) + logging.debug('Tokenizer::DeTokenize returns: %s' % line) + return line + + def TokenizeMatches(self, m): + """Replaces matches with tokens and stores the originals. + + Args: + m: A match object. + + Returns: + A string token which replaces the CSS comment. + """ + logging.debug('Tokenizer::TokenizeMatches %s' % m.group(1)) + self.originals.append(m.group(1)) + return '%s%s_%s%s' % (TOKEN_DELIMITER, + self.token_string, + len(self.originals), + TOKEN_DELIMITER) + + +def FixBodyDirectionLtrAndRtl(line): + """Replaces ltr with rtl and vice versa ONLY in the body direction. + + Args: + line: A string to replace instances of ltr with rtl. + Returns: + line with direction: ltr and direction: rtl swapped only in body selector. + line = FixBodyDirectionLtrAndRtl('body { direction:ltr }') + line will now be 'body { direction:rtl }'. + """ + + line = BODY_DIRECTION_LTR_RE.sub('\\1\\2\\3%s' % TMP_TOKEN, line) + line = BODY_DIRECTION_RTL_RE.sub('\\1\\2\\3%s' % LTR, line) + line = line.replace(TMP_TOKEN, RTL) + logging.debug('FixBodyDirectionLtrAndRtl returns: %s' % line) + return line + + +def FixLeftAndRight(line): + """Replaces left with right and vice versa in line. + + Args: + line: A string in which to perform the replacement. + + Returns: + line with left and right swapped. For example: + line = FixLeftAndRight('padding-left: 2px; margin-right: 1px;') + line will now be 'padding-right: 2px; margin-left: 1px;'. + """ + + line = LEFT_RE.sub(TMP_TOKEN, line) + line = RIGHT_RE.sub(LEFT, line) + line = line.replace(TMP_TOKEN, RIGHT) + logging.debug('FixLeftAndRight returns: %s' % line) + return line + + +def FixLeftAndRightInUrl(line): + """Replaces left with right and vice versa ONLY within background urls. + + Args: + line: A string in which to replace left with right and vice versa. + + Returns: + line with left and right swapped in the url string. For example: + line = FixLeftAndRightInUrl('background:url(right.png)') + line will now be 'background:url(left.png)'. + """ + + line = LEFT_IN_URL_RE.sub(TMP_TOKEN, line) + line = RIGHT_IN_URL_RE.sub(LEFT, line) + line = line.replace(TMP_TOKEN, RIGHT) + logging.debug('FixLeftAndRightInUrl returns: %s' % line) + return line + + +def FixLtrAndRtlInUrl(line): + """Replaces ltr with rtl and vice versa ONLY within background urls. + + Args: + line: A string in which to replace ltr with rtl and vice versa. + + Returns: + line with left and right swapped. For example: + line = FixLtrAndRtlInUrl('background:url(rtl.png)') + line will now be 'background:url(ltr.png)'. + """ + + line = LTR_IN_URL_RE.sub(TMP_TOKEN, line) + line = RTL_IN_URL_RE.sub(LTR, line) + line = line.replace(TMP_TOKEN, RTL) + logging.debug('FixLtrAndRtlInUrl returns: %s' % line) + return line + + +def FixCursorProperties(line): + """Fixes directional CSS cursor properties. + + Args: + line: A string to fix CSS cursor properties in. + + Returns: + line reformatted with the cursor properties substituted. For example: + line = FixCursorProperties('cursor: ne-resize') + line will now be 'cursor: nw-resize'. + """ + + line = CURSOR_EAST_RE.sub('\\1' + TMP_TOKEN, line) + line = CURSOR_WEST_RE.sub('\\1e-resize', line) + line = line.replace(TMP_TOKEN, 'w-resize') + logging.debug('FixCursorProperties returns: %s' % line) + return line + + +def FixFourPartNotation(line): + """Fixes the second and fourth positions in 4 part CSS notation. + + Args: + line: A string to fix 4 part CSS notation in. + + Returns: + line reformatted with the 4 part notations swapped. For example: + line = FixFourPartNotation('padding: 1px 2px 3px 4px') + line will now be 'padding: 1px 4px 3px 2px'. + """ + line = FOUR_NOTATION_QUANTITY_RE.sub('\\1 \\4 \\3 \\2', line) + line = FOUR_NOTATION_COLOR_RE.sub('\\1\\2 \\5 \\4 \\3', line) + logging.debug('FixFourPartNotation returns: %s' % line) + return line + + +def FixBackgroundPosition(line): + """Fixes horizontal background percentage values in line. + + Args: + line: A string to fix horizontal background position values in. + + Returns: + line reformatted with the 4 part notations swapped. + """ + line = BG_HORIZONTAL_PERCENTAGE_RE.sub(CalculateNewBackgroundPosition, line) + line = BG_HORIZONTAL_PERCENTAGE_X_RE.sub(CalculateNewBackgroundPositionX, + line) + logging.debug('FixBackgroundPosition returns: %s' % line) + return line + + +def CalculateNewBackgroundPosition(m): + """Fixes horizontal background-position percentages. + + This function should be used as an argument to re.sub since it needs to + perform replacement specific calculations. + + Args: + m: A match object. + + Returns: + A string with the horizontal background position percentage fixed. + BG_HORIZONTAL_PERCENTAGE_RE.sub(FixBackgroundPosition, + 'background-position: 75% 50%') + will return 'background-position: 25% 50%'. + """ + + # The flipped value is the offset from 100% + new_x = str(100-int(m.group(4))) + + # Since m.group(1) may very well be None type and we need a string.. + if m.group(1): + position_string = m.group(1) + else: + position_string = '' + + return 'background%s%s%s%s%%%s' % (position_string, m.group(2), m.group(3), + new_x, m.group(5)) + + +def CalculateNewBackgroundPositionX(m): + """Fixes percent based background-position-x. + + This function should be used as an argument to re.sub since it needs to + perform replacement specific calculations. + + Args: + m: A match object. + + Returns: + A string with the background-position-x percentage fixed. + BG_HORIZONTAL_PERCENTAGE_X_RE.sub(CalculateNewBackgroundPosition, + 'background-position-x: 75%') + will return 'background-position-x: 25%'. + """ + + # The flipped value is the offset from 100% + new_x = str(100-int(m.group(2))) + + return 'background-position-x%s%s%%' % (m.group(1), new_x) + + +def ChangeLeftToRightToLeft(lines, + swap_ltr_rtl_in_url=None, + swap_left_right_in_url=None): + """Turns lines into a stream and runs the fixing functions against it. + + Args: + lines: An list of CSS lines. + swap_ltr_rtl_in_url: Overrides this flag if param is set. + swap_left_right_in_url: Overrides this flag if param is set. + + Returns: + The same lines, but with left and right fixes. + """ + + global FLAGS + + # Possibly override flags with params. + logging.debug('ChangeLeftToRightToLeft swap_ltr_rtl_in_url=%s, ' + 'swap_left_right_in_url=%s' % (swap_ltr_rtl_in_url, + swap_left_right_in_url)) + if swap_ltr_rtl_in_url is None: + swap_ltr_rtl_in_url = FLAGS['swap_ltr_rtl_in_url'] + if swap_left_right_in_url is None: + swap_left_right_in_url = FLAGS['swap_left_right_in_url'] + + # Turns the array of lines into a single line stream. + logging.debug('LINES COUNT: %s' % len(lines)) + line = TOKEN_LINES.join(lines) + + # Tokenize any single line rules with the /* noflip */ annotation. + noflip_single_tokenizer = Tokenizer(NOFLIP_SINGLE_RE, 'NOFLIP_SINGLE') + line = noflip_single_tokenizer.Tokenize(line) + + # Tokenize any class rules with the /* noflip */ annotation. + noflip_class_tokenizer = Tokenizer(NOFLIP_CLASS_RE, 'NOFLIP_CLASS') + line = noflip_class_tokenizer.Tokenize(line) + + # Tokenize the comments so we can preserve them through the changes. + comment_tokenizer = Tokenizer(COMMENT_RE, 'C') + line = comment_tokenizer.Tokenize(line) + + # Here starteth the various left/right orientation fixes. + line = FixBodyDirectionLtrAndRtl(line) + + if swap_left_right_in_url: + line = FixLeftAndRightInUrl(line) + + if swap_ltr_rtl_in_url: + line = FixLtrAndRtlInUrl(line) + + line = FixLeftAndRight(line) + line = FixCursorProperties(line) + line = FixFourPartNotation(line) + line = FixBackgroundPosition(line) + + # DeTokenize the single line noflips. + line = noflip_single_tokenizer.DeTokenize(line) + + # DeTokenize the class-level noflips. + line = noflip_class_tokenizer.DeTokenize(line) + + # DeTokenize the comments. + line = comment_tokenizer.DeTokenize(line) + + # Rejoin the lines back together. + lines = line.split(TOKEN_LINES) + + return lines + +def usage(): + """Prints out usage information.""" + + print 'Usage:' + print ' ./cssjanus.py < file.css > file-rtl.css' + print 'Flags:' + print ' --swap_left_right_in_url: Fixes "left"/"right" string within urls.' + print ' Ex: ./cssjanus.py --swap_left_right_in_url < file.css > file_rtl.css' + print ' --swap_ltr_rtl_in_url: Fixes "ltr"/"rtl" string within urls.' + print ' Ex: ./cssjanus --swap_ltr_rtl_in_url < file.css > file_rtl.css' + +def setflags(opts): + """Parse the passed in command line arguments and set the FLAGS global. + + Args: + opts: getopt iterable intercepted from argv. + """ + + global FLAGS + + # Parse the arguments. + for opt, arg in opts: + logging.debug('opt: %s, arg: %s' % (opt, arg)) + if opt in ("-h", "--help"): + usage() + sys.exit() + elif opt in ("-d", "--debug"): + logging.getLogger().setLevel(logging.DEBUG) + elif opt == '--swap_ltr_rtl_in_url': + FLAGS['swap_ltr_rtl_in_url'] = True + elif opt == '--swap_left_right_in_url': + FLAGS['swap_left_right_in_url'] = True + + +def main(argv): + """Sends stdin lines to ChangeLeftToRightToLeft and writes to stdout.""" + + # Define the flags. + try: + opts, args = getopt.getopt(argv, 'hd', ['help', 'debug', + 'swap_left_right_in_url', + 'swap_ltr_rtl_in_url']) + except getopt.GetoptError: + usage() + sys.exit(2) + + # Parse and set the flags. + setflags(opts) + + # Call the main routine with all our functionality. + fixed_lines = ChangeLeftToRightToLeft(sys.stdin.readlines()) + sys.stdout.write(''.join(fixed_lines)) + +if __name__ == '__main__': + main(sys.argv[1:]) diff --git a/skins/vector/cssjanus/csslex.py b/skins/vector/cssjanus/csslex.py new file mode 100644 index 00000000..1fc7304e --- /dev/null +++ b/skins/vector/cssjanus/csslex.py @@ -0,0 +1,114 @@ +#!/usr/bin/python +# +# Copyright 2007 Google Inc. All Rights Reserved. + +"""CSS Lexical Grammar rules. + +CSS lexical grammar from http://www.w3.org/TR/CSS21/grammar.html +""" + +__author__ = ['elsigh@google.com (Lindsey Simon)', + 'msamuel@google.com (Mike Samuel)'] + +# public symbols +__all__ = [ "NEWLINE", "HEX", "NON_ASCII", "UNICODE", "ESCAPE", "NMSTART", "NMCHAR", "STRING1", "STRING2", "IDENT", "NAME", "HASH", "NUM", "STRING", "URL", "SPACE", "WHITESPACE", "COMMENT", "QUANTITY", "PUNC" ] + +# The comments below are mostly copied verbatim from the grammar. + +# "@import" {return IMPORT_SYM;} +# "@page" {return PAGE_SYM;} +# "@media" {return MEDIA_SYM;} +# "@charset" {return CHARSET_SYM;} +KEYWORD = r'(?:\@(?:import|page|media|charset))' + +# nl \n|\r\n|\r|\f ; a newline +NEWLINE = r'\n|\r\n|\r|\f' + +# h [0-9a-f] ; a hexadecimal digit +HEX = r'[0-9a-f]' + +# nonascii [\200-\377] +NON_ASCII = r'[\200-\377]' + +# unicode \\{h}{1,6}(\r\n|[ \t\r\n\f])? +UNICODE = r'(?:(?:\\' + HEX + r'{1,6})(?:\r\n|[ \t\r\n\f])?)' + +# escape {unicode}|\\[^\r\n\f0-9a-f] +ESCAPE = r'(?:' + UNICODE + r'|\\[^\r\n\f0-9a-f])' + +# nmstart [_a-z]|{nonascii}|{escape} +NMSTART = r'(?:[_a-z]|' + NON_ASCII + r'|' + ESCAPE + r')' + +# nmchar [_a-z0-9-]|{nonascii}|{escape} +NMCHAR = r'(?:[_a-z0-9-]|' + NON_ASCII + r'|' + ESCAPE + r')' + +# ident -?{nmstart}{nmchar}* +IDENT = r'-?' + NMSTART + NMCHAR + '*' + +# name {nmchar}+ +NAME = NMCHAR + r'+' + +# hash +HASH = r'#' + NAME + +# string1 \"([^\n\r\f\\"]|\\{nl}|{escape})*\" ; "string" +STRING1 = r'"(?:[^\"\\]|\\.)*"' + +# string2 \'([^\n\r\f\\']|\\{nl}|{escape})*\' ; 'string' +STRING2 = r"'(?:[^\'\\]|\\.)*'" + +# string {string1}|{string2} +STRING = '(?:' + STRING1 + r'|' + STRING2 + ')' + +# num [0-9]+|[0-9]*"."[0-9]+ +NUM = r'(?:[0-9]*\.[0-9]+|[0-9]+)' + +# s [ \t\r\n\f] +SPACE = r'[ \t\r\n\f]' + +# w {s}* +WHITESPACE = '(?:' + SPACE + r'*)' + +# url special chars +URL_SPECIAL_CHARS = r'[!#$%&*-~]' + +# url chars ({url_special_chars}|{nonascii}|{escape})* +URL_CHARS = r'(?:%s|%s|%s)*' % (URL_SPECIAL_CHARS, NON_ASCII, ESCAPE) + +# url +URL = r'url\(%s(%s|%s)%s\)' % (WHITESPACE, STRING, URL_CHARS, WHITESPACE) + +# comments +# see http://www.w3.org/TR/CSS21/grammar.html +COMMENT = r'/\*[^*]*\*+([^/*][^*]*\*+)*/' + +# {E}{M} {return EMS;} +# {E}{X} {return EXS;} +# {P}{X} {return LENGTH;} +# {C}{M} {return LENGTH;} +# {M}{M} {return LENGTH;} +# {I}{N} {return LENGTH;} +# {P}{T} {return LENGTH;} +# {P}{C} {return LENGTH;} +# {D}{E}{G} {return ANGLE;} +# {R}{A}{D} {return ANGLE;} +# {G}{R}{A}{D} {return ANGLE;} +# {M}{S} {return TIME;} +# {S} {return TIME;} +# {H}{Z} {return FREQ;} +# {K}{H}{Z} {return FREQ;} +# % {return PERCENTAGE;} +UNIT = r'(?:em|ex|px|cm|mm|in|pt|pc|deg|rad|grad|ms|s|hz|khz|%)' + +# {num}{UNIT|IDENT} {return NUMBER;} +QUANTITY = '%s(?:%s%s|%s)?' % (NUM, WHITESPACE, UNIT, IDENT) + +# "<!--" {return CDO;} +# "-->" {return CDC;} +# "~=" {return INCLUDES;} +# "|=" {return DASHMATCH;} +# {w}"{" {return LBRACE;} +# {w}"+" {return PLUS;} +# {w}">" {return GREATER;} +# {w}"," {return COMMA;} +PUNC = r'<!--|-->|~=|\|=|[\{\+>,:;]' |