def handle_request(self, latex_expr):
"""Uploads LaTeX formated equations to imgur and returns a URL.
Args:
latex_expr: string that is to converte to LaTeX, requires that string is enclosed by $.
>>> handle_request("$\int \sqrt{1+\cos x + \sin x} dx$")
Returns:
A tuple (str, (int, int)), where str is the url, on imgur and
the tuples are the dimensions of the image (width, height).
"""
# create a bare bones latex document with only the one line specified from the user in the document.
doc = Document(documentclass='minimal')
doc.packages = [Package(NoEscape(i)) for i in self.packages.split(',')]
doc.append(NoEscape(latex_expr))
doc.generate_pdf('default',
compiler_args=[
'-no-shell-escape',
],
compiler="pdflatex",
clean=True,
clean_tex=True)
# These are normal Linux commands that are used to convert the pdf
# file created by pylatex into a snippet
os.system("pdfcrop default.pdf")
os.system("pdftoppm default-crop.pdf|pnmtopng > default.png")
path = os.path.abspath('default.png')
uploaded_image = self._client.upload_image(path, title="LaTeX")
return uploaded_image.link, OnlineImage.get_local_image_info(path)
def _upload_problem(self, problem):
"""Uploads a specified problem to imgur.
Returns:
A tuple (str, (int, int)), where str is the url, on imgur and
the tuples are the dimensions of the image (width, height).
Raises:
LatexParsingException : there was an issue parsing the document
"""
default_doc = []
# populate doc with the appropriate problem
for line in problem[0]:
# these first two statements are for wrapping the title around in a minipage which allows
# the problem to be generated on one page and doesn't invoke \newpage
if line == '\\begin{document}':
default_doc.append(NoEscape(line))
default_doc.append(NoEscape('\\begin{minipage}{\\textwidth}'))
elif line == '\\maketitle':
default_doc.append(NoEscape(line))
default_doc.append(NoEscape('\\end{minipage}'))
elif line == '\\end{itemize}':
for line2 in problem[1]:
default_doc.append(NoEscape(line2))
default_doc.append(NoEscape(line))
else:
default_doc.append(NoEscape(line))
doc_class_line = NoEscape(default_doc[0])
use_pkg_line = NoEscape(default_doc[1])
# skip twocolumn since it makes the problem look spread awfully
opts = filter(lambda pkg: pkg != 'twocolumn', doc_class_line[doc_class_line.find('[') + 1: doc_class_line.find(']')].split(','))
args = NoEscape(doc_class_line[doc_class_line.find('{') + 1: doc_class_line.find('}')])
doc = Document(documentclass=Command('documentclass', options=opts, arguments=args))
# load packages
doc.packages = [Package(i) for i in use_pkg_line[use_pkg_line.find('{') + 1: use_pkg_line.find('}')].split(',')]
# position right after \begin{document}
it = 4
while default_doc[it].strip() != '\end{document}':
doc.append(NoEscape(default_doc[it]))
it += 1
# fail safe for future problems which may not parse correctly
try:
doc.generate_pdf('default', compiler="pdflatex")
except:
raise LatexParsingException
# These are normal Linux commands that are used to convert the pdf
# file created by pylatex into a snippet
os.system("pdfcrop default.pdf")
os.system("pdftoppm default-crop.pdf|pnmtopng > default.png")
path = os.path.abspath('default.png')
uploaded_image = self._client.upload_image(path, title="LaTeX")
return uploaded_image.link, OnlineImage.get_local_image_info(path)
def handle_request(self, latex_expr):
"""Uploads LaTeX formated equations to imgur and returns a URL.
Args:
latex_expr: string that is to converte to LaTeX, requires that string is enclosed by $.
>>> handle_request("$\int \sqrt{1+\cos x + \sin x} dx$")
Returns:
A tuple (str, (int, int)), where str is the url, on imgur and
the tuples are the dimensions of the image (width, height).
"""
# create a bare bones latex document with only the one line specified from the user in the document.
doc = Document(documentclass='minimal')
doc.packages = [Package(NoEscape(i)) for i in self.packages.split(',')]
doc.append(NoEscape(latex_expr))
doc.generate_pdf('default', compiler_args=['-no-shell-escape', ], compiler="pdflatex", clean=True, clean_tex=True)
# These are normal Linux commands that are used to convert the pdf
# file created by pylatex into a snippet
os.system("pdfcrop default.pdf")
os.system("pdftoppm default-crop.pdf|pnmtopng > default.png")
path = os.path.abspath('default.png')
uploaded_image = self._client.upload_image(path, title="LaTeX")
return uploaded_image.link, OnlineImage.get_local_image_info(path)
def _upload_problem(self, problem):
"""Uploads a specified problem to imgur.
Returns:
A tuple (str, (int, int)), where str is the url, on imgur and
the tuples are the dimensions of the image (width, height).
Raises:
LatexParsingException : there was an issue parsing the document
"""
default_doc = []
# populate doc with the appropriate problem
for line in problem[0]:
# these first two statements are for wrapping the title around in a minipage which allows
# the problem to be generated on one page and doesn't invoke \newpage
if line == '\\begin{document}':
default_doc.append(NoEscape(line))
default_doc.append(NoEscape('\\begin{minipage}{\\textwidth}'))
elif line == '\\maketitle':
default_doc.append(NoEscape(line))
default_doc.append(NoEscape('\\end{minipage}'))
elif line == '\\end{itemize}':
for line2 in problem[1]:
default_doc.append(NoEscape(line2))
default_doc.append(NoEscape(line))
else:
default_doc.append(NoEscape(line))
doc_class_line = NoEscape(default_doc[0])
use_pkg_line = NoEscape(default_doc[1])
# skip twocolumn since it makes the problem look spread awfully
opts = filter(
lambda pkg: pkg != 'twocolumn',
doc_class_line[doc_class_line.find('[') +
1:doc_class_line.find(']')].split(','))
args = NoEscape(doc_class_line[doc_class_line.find('{') +
1:doc_class_line.find('}')])
doc = Document(documentclass=Command(
'documentclass', options=opts, arguments=args))
# load packages
doc.packages = [
Package(i)
for i in use_pkg_line[use_pkg_line.find('{') +
1:use_pkg_line.find('}')].split(',')
]
# position right after \begin{document}
it = 4
while default_doc[it].strip() != '\end{document}':
doc.append(NoEscape(default_doc[it]))
it += 1
# fail safe for future problems which may not parse correctly
try:
doc.generate_pdf('default', compiler="pdflatex")
except:
raise LatexParsingException
# These are normal Linux commands that are used to convert the pdf
# file created by pylatex into a snippet
os.system("pdfcrop default.pdf")
os.system("pdftoppm default-crop.pdf|pnmtopng > default.png")
path = os.path.abspath('default.png')
uploaded_image = self._client.upload_image(path, title="LaTeX")
return uploaded_image.link, OnlineImage.get_local_image_info(path)
def get_document_sizes(document_class):
"""Get useful document sizes given a LaTeX document class.
Args:
document_class: dict with ``documentclass`` and ``document_options``. It
may optionally contain a list of LaTeX packages under ``packages``
as well as any other argument acceptable by ``pylatex.document``.
Examples:
You may use one of the available document_classes.
>>> from pprint import pprint
>>> from pubplot.document_classes import ieee_infocom
>>> sizes_dict = get_document_sizes(ieee_infocom)
>>> pprint(sizes_dict)
{'Huge': 24.0,
'LARGE': 17.0,
'Large': 14.0,
'caption': 8.0,
'columnwidth': 252.0,
'footnotesize': 8.0,
'huge': 20.0,
'large': 12.0,
'normalsize': 10.0,
'scriptsize': 7.0,
'small': 9.0,
'textwidth': 516.0,
'tiny': 5.0}
Or provide your own, using a dict
>>> document_class = {
... 'documentclass': 'IEEEtran',
... 'document_options': ['10pt', 'conference', 'letterpaper']
... }
>>> sizes_dict = get_document_sizes(document_class)
>>> pprint(sizes_dict)
{'Huge': 24.0,
'LARGE': 17.0,
'Large': 14.0,
'caption': 8.0,
'columnwidth': 252.0,
'footnotesize': 8.0,
'huge': 20.0,
'large': 12.0,
'normalsize': 10.0,
'scriptsize': 7.0,
'small': 9.0,
'textwidth': 516.0,
'tiny': 5.0}
Returns:
A dictionary containing sizes
- columnwidth
- textwidth
- tiny
- scriptsize
- footnotesize
- small
- normalsize
- large
- Large
- LARGE
- huge
- Huge
- caption
"""
def log_with_name(name, value):
return '\\wlog{{{}{}={}}}'.format(LOG_PATTERN, name, value)
def log_text_size(text_size_name):
return '\\{} a {} \n\n'.format(
text_size_name, log_with_name(text_size_name, r'\f@size pt'))
get_sizes_command = r"""
\makeatletter
\newcommand\getsizes{%
""" + log_with_name('columnwidth', r'\the\columnwidth') + r"""
""" + log_with_name('textwidth', r'\the\textwidth') + r"""
\begin{figure}
\centering
\fbox{
\begin{minipage}[c][0.1\textheight][c]{\columnwidth}
\centering{Dummy Image}
\end{minipage}
}
\caption{a """ + log_with_name('caption', r'\f@size pt') + r""" }
\end{figure}
"""
for size in LATEX_BUILT_IN_SIZES:
get_sizes_command += log_text_size(size)
get_sizes_command += '}'
temp_doc_name = next(tempfile._get_candidate_names())
document_kwargs = document_class.copy()
packages = document_kwargs.pop('packages', [])
doc = Document(temp_doc_name, **document_kwargs)
doc.packages = packages
doc.preamble.append(NoEscape(get_sizes_command))
doc.append(Command('title', 'Title'))
doc.append(Command('maketitle'))
doc.append('Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam c'
'onsectetur volutpat tellus vel ultricies. Donec ullamcorper or'
'ci quis ante volutpat efficitur. Aenean at rhoncus nibh. Morbi'
' vitae justo velit. Curabitur eget condimentum quam, nec accum'
'san nulla. Nam tempor sem id tellus consectetur condimentum. N'
'ullam id lacus purus. Nam nisi nisi, tempus ac ligula luctus, '
'mollis volutpat odio. Mauris euismod mi nec rutrum tempor.\n' *
20)
doc.append(NoEscape(r'\getsizes'))
try:
doc.generate_pdf(temp_doc_name, clean=False)
except subprocess.CalledProcessError:
pass
with open(temp_doc_name + '.log', 'r') as f:
lines = f.read().splitlines()
sizes_dict = {}
for l in lines:
if l.startswith(LOG_PATTERN):
variable, value = l.split('=')
variable = variable[len(LOG_PATTERN):]
sizes_dict[variable] = float(value[0:-2])
list(map(os.remove, glob.glob(temp_doc_name + '.*')))
return sizes_dict
