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214 lines
8.9 KiB
Python
214 lines
8.9 KiB
Python
# -*- coding:utf-8 -*
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#
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# Copyright 2016,2017
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# - Skia <skia@libskia.so>
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#
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# Ce fichier fait partie du site de l'Association des Étudiants de l'UTBM,
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# http://ae.utbm.fr.
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#
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# This program is free software; you can redistribute it and/or modify it under
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# the terms of the GNU General Public License a published by the Free Software
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# Foundation; either version 3 of the License, or (at your option) any later
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# version.
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#
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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# details.
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#
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# You should have received a copy of the GNU General Public License along with
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# this program; if not, write to the Free Sofware Foundation, Inc., 59 Temple
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# Place - Suite 330, Boston, MA 02111-1307, USA.
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#
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#
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import re
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# Image utils
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from io import BytesIO
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from datetime import datetime, timezone, date
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from PIL import Image, ExifTags
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import PIL
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from django.conf import settings
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from django.core.files.base import ContentFile
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def get_start_of_semester(d=date.today()):
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"""
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This function computes the start date of the semester with respect to the given date (default is today),
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and the start date given in settings.SITH_START_DATE.
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It takes the nearest past start date.
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Exemples: with SITH_START_DATE = (8, 15)
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Today -> Start date
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2015-03-17 -> 2015-02-15
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2015-01-11 -> 2014-08-15
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"""
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today = d
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year = today.year
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start = date(year, settings.SITH_START_DATE[0], settings.SITH_START_DATE[1])
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start2 = start.replace(month=(start.month+6)%12)
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if start > start2:
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start, start2 = start2, start
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if today < start:
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return start2.replace(year=year-1)
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elif today < start2:
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return start
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else:
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return start2
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def get_semester(d=date.today()):
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start = get_start_of_semester(d)
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if start.month <= 6:
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return "P" + str(start.year)[-2:]
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else:
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return "A" + str(start.year)[-2:]
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def scale_dimension(width, height, long_edge):
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if width > height:
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ratio = long_edge * 1. / width
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else:
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ratio = long_edge * 1. / height
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return int(width * ratio), int(height * ratio)
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def resize_image(im, edge, format):
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(w, h) = im.size
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(width, height) = scale_dimension(w, h, long_edge=edge)
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content = BytesIO()
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im = im.resize((width, height), PIL.Image.ANTIALIAS)
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try:
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im.save(fp=content, format=format.upper(), quality=90, optimize=True, progressive=True)
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except IOError:
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PIL.ImageFile.MAXBLOCK = im.size[0] * im.size[1]
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im.save(fp=content, format=format.upper(), quality=90, optimize=True, progressive=True)
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return ContentFile(content.getvalue())
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def exif_auto_rotate(image):
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for orientation in ExifTags.TAGS.keys() :
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if ExifTags.TAGS[orientation]=='Orientation' : break
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exif=dict(image._getexif().items())
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if exif[orientation] == 3 :
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image=image.rotate(180, expand=True)
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elif exif[orientation] == 6 :
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image=image.rotate(270, expand=True)
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elif exif[orientation] == 8 :
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image=image.rotate(90, expand=True)
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return image
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def doku_to_markdown(text):
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"""This is a quite correct doku translator"""
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text = re.sub(r'([^:]|^)\/\/(.*?)\/\/', r'*\2*', text) # Italic (prevents protocol:// conflict)
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text = re.sub(r'<del>(.*?)<\/del>', r'~~\1~~', text, flags=re.DOTALL) # Strike (may be multiline)
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text = re.sub(r'<sup>(.*?)<\/sup>', r'^\1^', text) # Superscript (multiline not supported, because almost never used)
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text = re.sub(r'<sub>(.*?)<\/sub>', r'_\1_', text) # Subscript (idem)
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text = re.sub(r'^======(.*?)======', r'#\1', text, flags=re.MULTILINE) # Titles
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text = re.sub(r'^=====(.*?)=====', r'##\1', text, flags=re.MULTILINE)
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text = re.sub(r'^====(.*?)====', r'###\1', text, flags=re.MULTILINE)
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text = re.sub(r'^===(.*?)===', r'####\1', text, flags=re.MULTILINE)
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text = re.sub(r'^==(.*?)==', r'#####\1', text, flags=re.MULTILINE)
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text = re.sub(r'^=(.*?)=', r'######\1', text, flags=re.MULTILINE)
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text = re.sub(r'<nowiki>', r'<nosyntax>', text)
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text = re.sub(r'</nowiki>', r'</nosyntax>', text)
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text = re.sub(r'<code>', r'```\n', text)
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text = re.sub(r'</code>', r'\n```', text)
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text = re.sub(r'article://', r'page://', text)
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text = re.sub(r'dfile://', r'file://', text)
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i = 1
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for fn in re.findall(r'\(\((.*?)\)\)', text): # Footnotes
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text = re.sub(r'\(\((.*?)\)\)', r'[^%s]' % i, text, count=1)
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text += "\n[^%s]: %s\n" % (i, fn)
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i += 1
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text = re.sub(r'\\{2,}[\s]', r' \n', text) # Carriage return
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text = re.sub(r'\[\[(.*?)\|(.*?)\]\]', r'[\2](\1)', text) # Links
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text = re.sub(r'\[\[(.*?)\]\]', r'[\1](\1)', text) # Links 2
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text = re.sub(r'{{(.*?)\|(.*?)}}', r'', text) # Images
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text = re.sub(r'{{(.*?)(\|(.*?))?}}', r'', text) # Images 2
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text = re.sub(r'{\[(.*?)(\|(.*?))?\]}', r'[\1](\1)', text) # Video (transform to classic links, since we can't integrate them)
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text = re.sub(r'###(\d*?)###', r'[[[\1]]]', text) # Progress bar
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text = re.sub(r'(\n +[^* -][^\n]*(\n +[^* -][^\n]*)*)', r'```\1\n```', text, flags=re.DOTALL) # Block code without lists
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text = re.sub(r'( +)-(.*)', r'1.\2', text) # Ordered lists
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new_text = []
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quote_level = 0
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for line in text.splitlines(): # Tables and quotes
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enter = re.finditer(r'\[quote(=(.+?))?\]', line)
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quit = re.finditer(r'\[/quote\]', line)
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if re.search(r'\A\s*\^(([^\^]*?)\^)*', line): # Table part
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line = line.replace('^', '|')
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new_text.append("> " * quote_level + line)
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new_text.append("> " * quote_level + "|---|") # Don't keep the text alignement in tables it's really too complex for what it's worth
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elif enter or quit: # Quote part
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for quote in enter: # Enter quotes (support multiple at a time)
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quote_level += 1
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try:
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new_text.append("> " * quote_level + "##### " + quote.group(2))
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except:
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new_text.append("> " * quote_level)
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line = line.replace(quote.group(0), '')
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final_quote_level = quote_level # Store quote_level to use at the end, since it will be modified during quit iteration
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final_newline = False
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for quote in quit: # Quit quotes (support multiple at a time)
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line = line.replace(quote.group(0), '')
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quote_level -= 1
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final_newline = True
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new_text.append("> " * final_quote_level + line) # Finally append the line
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if final_newline: new_text.append("\n") # Add a new line to ensure the separation between the quote and the following text
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else:
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new_text.append(line)
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return "\n".join(new_text)
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def bbcode_to_markdown(text):
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"""This is a very basic BBcode translator"""
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text = re.sub(r'\[b\](.*?)\[\/b\]', r'**\1**', text, flags=re.DOTALL) # Bold
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text = re.sub(r'\[i\](.*?)\[\/i\]', r'*\1*', text, flags=re.DOTALL) # Italic
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text = re.sub(r'\[u\](.*?)\[\/u\]', r'__\1__', text, flags=re.DOTALL) # Underline
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text = re.sub(r'\[s\](.*?)\[\/s\]', r'~~\1~~', text, flags=re.DOTALL) # Strike (may be multiline)
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text = re.sub(r'\[strike\](.*?)\[\/strike\]', r'~~\1~~', text, flags=re.DOTALL) # Strike 2
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text = re.sub(r'article://', r'page://', text)
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text = re.sub(r'dfile://', r'file://', text)
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text = re.sub(r'\[url=(.*?)\](.*)\[\/url\]', r'[\2](\1)', text) # Links
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text = re.sub(r'\[url\](.*)\[\/url\]', r'\1', text) # Links 2
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text = re.sub(r'\[img\](.*)\[\/img\]', r'', text) # Images
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new_text = []
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quote_level = 0
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for line in text.splitlines(): # Tables and quotes
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enter = re.finditer(r'\[quote(=(.+?))?\]', line)
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quit = re.finditer(r'\[/quote\]', line)
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if enter or quit: # Quote part
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for quote in enter: # Enter quotes (support multiple at a time)
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quote_level += 1
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try:
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new_text.append("> " * quote_level + "##### " + quote.group(2))
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except:
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new_text.append("> " * quote_level)
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line = line.replace(quote.group(0), '')
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final_quote_level = quote_level # Store quote_level to use at the end, since it will be modified during quit iteration
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final_newline = False
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for quote in quit: # Quit quotes (support multiple at a time)
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line = line.replace(quote.group(0), '')
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quote_level -= 1
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final_newline = True
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new_text.append("> " * final_quote_level + line) # Finally append the line
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if final_newline: new_text.append("\n") # Add a new line to ensure the separation between the quote and the following text
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else:
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new_text.append(line)
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return "\n".join(new_text)
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