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253 lines
9.3 KiB
Python
253 lines
9.3 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 date
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from PIL import 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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spring, autumn = min(start, start2), max(start, start2)
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if today > autumn: # autumn semester
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return autumn
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if today > spring: # spring semester
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return spring
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return autumn.replace(year=year - 1) # autumn semester of last year
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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 * 1.0 / width
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else:
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ratio = long_edge * 1.0 / 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(
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fp=content,
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format=format.upper(),
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quality=90,
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optimize=True,
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progressive=True,
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)
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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(
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fp=content,
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format=format.upper(),
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quality=90,
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optimize=True,
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progressive=True,
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)
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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":
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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(
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r"([^:]|^)\/\/(.*?)\/\/", r"*\2*", text
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) # Italic (prevents protocol:// conflict)
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text = re.sub(
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r"<del>(.*?)<\/del>", r"~~\1~~", text, flags=re.DOTALL
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) # Strike (may be multiline)
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text = re.sub(
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r"<sup>(.*?)<\/sup>", r"^\1^", text
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) # 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(
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r"{\[(.*?)(\|(.*?))?\]}", r"[\1](\1)", text
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) # 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(
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r"(\n +[^* -][^\n]*(\n +[^* -][^\n]*)*)", r"```\1\n```", text, flags=re.DOTALL
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) # 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(
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"> " * quote_level + "|---|"
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) # 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:
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new_text.append(
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"\n"
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) # 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(
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r"\[s\](.*?)\[\/s\]", r"~~\1~~", text, flags=re.DOTALL
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) # Strike (may be multiline)
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text = re.sub(
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r"\[strike\](.*?)\[\/strike\]", r"~~\1~~", text, flags=re.DOTALL
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) # 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:
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new_text.append(
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"\n"
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) # 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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