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templater.py
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import enum
import logging
import os
import subprocess
from enum import Enum
from io import BytesIO
from pathlib import Path
from tempfile import TemporaryDirectory
from jinja2 import Environment, FileSystemLoader
from PyPDF2 import PdfMerger
class Templater:
def __init__(self):
self.file_loader = FileSystemLoader(Path(__file__).parent)
self.env = Environment(loader=self.file_loader)
self.template = self.env.get_template('template.tex')
self.logger = logging.getLogger("Templater")
def generate_pdf(self, data: dict[str, any]) -> BytesIO:
data['graphicspath'] = f"{(Path(__file__).parent / 'img').absolute()}{os.sep}"
with TemporaryDirectory() as td:
with open(Path(td, 'output.tex'), 'w') as f:
f.write(self.template.render(data=data))
args = [
'latexmk',
'-cd',
'-jobname=output',
f'-auxdir={td}',
f'-outdir={td}',
'-interaction=batchmode',
'-halt-on-error',
'-pdf',
'-shell-escape',
'output.tex',
]
subprocess.run(args,
cwd=td,
timeout=15,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
with open(Path(td, 'output.log'), 'rb') as f:
self.logger.debug(f.read().decode('utf-8'))
pass
with open(Path(td, 'output.pdf'), 'rb') as f:
pdf = f.read()
return BytesIO(pdf)
class HazardStatementOverview(Enum):
ACUTE_TOXICITY = enum.auto()
ASPIRATION_HAZARD = enum.auto()
CARCINOGENICITY = enum.auto()
EMIT_FLAMMABLE_GASES = enum.auto()
COMBUSTIBLE_DUST = enum.auto()
CORROSIVE_TO_METALS = enum.auto()
EXPLOSIVES = enum.auto()
FLAMMABLE_AEROSOLS = enum.auto()
FLAMMABLE_LIQUIDS = enum.auto()
FLAMMABLE_SOLIDS = enum.auto()
GASES_UNDER_PRESSURE = enum.auto()
GERM_CELL_MUTAGENICITY = enum.auto()
HAZARDOUS_TO_AQUATIC_ENVIRONMENT = enum.auto()
HAZARDOUS_TO_OZONE_LAYER = enum.auto()
OXIDIZING_GASES = enum.auto()
OXIDIZING_LIQUIDS = enum.auto()
OXIDIZING_SOLIDS = enum.auto()
ORGANIC_PEROXIDES = enum.auto()
PYROPHORIC_GAS = enum.auto()
PYROPHORIC_LIQUIDS = enum.auto()
PYROPHORIC_SOLID = enum.auto()
REPRODUCTIVE_TOXICITY = enum.auto()
RESPIRATORY_OR_SKIN_SENSITIZATION = enum.auto()
SELF_HEATING_CHEMICALS = enum.auto()
SELF_REACTIVE_CHEMICALS = enum.auto()
SERIOUS_EYE_DAMAGE_IRRITATION = enum.auto()
SKIN_CORROSION_IRRITATION = enum.auto()
SIMPLE_ASPHYXIANT = enum.auto()
ORGAN_TOXICITY_REPEATED_PROLONGED = enum.auto()
ORGAN_TOXICITY_SINGLE = enum.auto()
OTHER = enum.auto()
NOT_APPLICABLE = enum.auto()
@classmethod
def get_statement(cls, hcode):
hcode_map: dict[str, cls] = {
# ACUTE_TOXICITY
"H300": [cls.ACUTE_TOXICITY],
"H301": [cls.ACUTE_TOXICITY],
"H302": [cls.ACUTE_TOXICITY],
"H303": [cls.ACUTE_TOXICITY],
"H310": [cls.ACUTE_TOXICITY],
"H311": [cls.ACUTE_TOXICITY],
"H312": [cls.ACUTE_TOXICITY],
"H313": [cls.ACUTE_TOXICITY],
"H330": [cls.ACUTE_TOXICITY],
"H331": [cls.ACUTE_TOXICITY],
"H332": [cls.ACUTE_TOXICITY],
"H333": [cls.ACUTE_TOXICITY],
# ASPIRATION_HAZARD
"H304": [cls.ASPIRATION_HAZARD],
"H305": [cls.ASPIRATION_HAZARD],
# CARCINOGENICITY
"H350": [cls.CARCINOGENICITY],
"H351": [cls.CARCINOGENICITY],
# EMIT_FLAMMABLE_GASES
"H260": [cls.EMIT_FLAMMABLE_GASES],
"H261": [cls.EMIT_FLAMMABLE_GASES],
# COMBUSTIBLE_DUST TODO CANNOT FIND
# CORROSIVE_TO_METALS
"H290": [cls.CORROSIVE_TO_METALS],
# EXPLOSIVES
"H200": [cls.EXPLOSIVES],
"H201": [cls.EXPLOSIVES],
"H202": [cls.EXPLOSIVES],
"H203": [cls.EXPLOSIVES],
"H204": [cls.EXPLOSIVES],
"H205": [cls.EXPLOSIVES],
"H206": [cls.EXPLOSIVES],
"H207": [cls.EXPLOSIVES],
"H208": [cls.EXPLOSIVES],
"H209": [cls.EXPLOSIVES],
"H210": [cls.EXPLOSIVES],
"H211": [cls.EXPLOSIVES],
# FLAMMABLE_AEROSOLS
"H222": [cls.FLAMMABLE_AEROSOLS],
"H223": [cls.FLAMMABLE_AEROSOLS],
"H229": [cls.FLAMMABLE_AEROSOLS], # TODO CHECK IF "AEROSOLS" FIT HERE
# FLAMMABLE_LIQUIDS
"H224": [cls.FLAMMABLE_LIQUIDS],
"H225": [cls.FLAMMABLE_LIQUIDS],
"H226": [cls.FLAMMABLE_LIQUIDS],
"H227": [cls.FLAMMABLE_LIQUIDS],
# FLAMMABLE_SOLIDS
"H228": [cls.FLAMMABLE_SOLIDS],
# GASES_UNDER_PRESSURE
"H280": [cls.GASES_UNDER_PRESSURE],
"H281": [cls.GASES_UNDER_PRESSURE],
"H282": [cls.GASES_UNDER_PRESSURE],
"H283": [cls.GASES_UNDER_PRESSURE],
"H284": [cls.GASES_UNDER_PRESSURE],
# GERM_CELL_MUTAGENICITY
"H340": [cls.GERM_CELL_MUTAGENICITY],
"H341": [cls.GERM_CELL_MUTAGENICITY],
# HAZARDOUS_TO_AQUATIC_ENVIRONMENT
"H400": [cls.HAZARDOUS_TO_AQUATIC_ENVIRONMENT],
"H401": [cls.HAZARDOUS_TO_AQUATIC_ENVIRONMENT],
"H402": [cls.HAZARDOUS_TO_AQUATIC_ENVIRONMENT],
"H410": [cls.HAZARDOUS_TO_AQUATIC_ENVIRONMENT],
"H411": [cls.HAZARDOUS_TO_AQUATIC_ENVIRONMENT],
"H412": [cls.HAZARDOUS_TO_AQUATIC_ENVIRONMENT],
"H413": [cls.HAZARDOUS_TO_AQUATIC_ENVIRONMENT],
# HAZARDOUS_TO_OZONE_LAYER
"H420": [cls.HAZARDOUS_TO_OZONE_LAYER],
# OXIDIZING_GASES
"H270": [cls.OXIDIZING_GASES],
# OXIDIZING_LIQUIDS, OXIDIZING_SOLIDS
"H271": [cls.OXIDIZING_LIQUIDS, cls.OXIDIZING_SOLIDS],
"H272": [cls.OXIDIZING_LIQUIDS, cls.OXIDIZING_SOLIDS],
# ORGANIC_PEROXIDES, SELF_REACTIVE_CHEMICALS
"H240": [cls.ORGANIC_PEROXIDES, cls.SELF_REACTIVE_CHEMICALS],
"H241": [cls.ORGANIC_PEROXIDES, cls.SELF_REACTIVE_CHEMICALS],
"H242": [cls.ORGANIC_PEROXIDES, cls.SELF_REACTIVE_CHEMICALS],
# PYROPHORIC_GAS
"H220": [cls.PYROPHORIC_GAS],
# PYROPHORIC_LIQUIDS, PYROPHORIC_SOLID
"H250": [cls.PYROPHORIC_LIQUIDS, cls.PYROPHORIC_SOLID],
# REPRODUCTIVE_TOXICITY
"H360": [cls.REPRODUCTIVE_TOXICITY],
"H361": [cls.REPRODUCTIVE_TOXICITY],
"H362": [cls.REPRODUCTIVE_TOXICITY],
# RESPIRATORY_OR_SKIN_SENSITIZATION
"H317": [cls.RESPIRATORY_OR_SKIN_SENSITIZATION],
# SELF_HEATING_CHEMICALS
"H251": [cls.SELF_HEATING_CHEMICALS],
"H252": [cls.SELF_HEATING_CHEMICALS],
# SERIOUS_EYE_DAMAGE_IRRITATION
"H314": [cls.SERIOUS_EYE_DAMAGE_IRRITATION, cls.SKIN_CORROSION_IRRITATION],
"H318": [cls.SERIOUS_EYE_DAMAGE_IRRITATION],
"H319": [cls.SERIOUS_EYE_DAMAGE_IRRITATION],
"H320": [cls.SERIOUS_EYE_DAMAGE_IRRITATION],
# SKIN_CORROSION_IRRITATION
"H315": [cls.SKIN_CORROSION_IRRITATION],
"H316": [cls.SKIN_CORROSION_IRRITATION],
# SIMPLE_ASPHYXIANT TODO CANNOT FIND
# ORGAN_TOXICITY_REPEATED_PROLONGED
"H372": [cls.ORGAN_TOXICITY_REPEATED_PROLONGED],
"H373": [cls.ORGAN_TOXICITY_REPEATED_PROLONGED],
# ORGAN_TOXICITY_SINGLE
"H335": [cls.ORGAN_TOXICITY_SINGLE],
"H336": [cls.ORGAN_TOXICITY_SINGLE],
"H370": [cls.ORGAN_TOXICITY_SINGLE],
"H371": [cls.ORGAN_TOXICITY_SINGLE],
}
try:
result = hcode_map[hcode]
except KeyError:
result = []
return result
@classmethod
def get_statements(cls, hcodes):
statements: list[cls] = []
for hcode in hcodes:
statements.extend(cls.get_statement(hcode))
return statements
class PaperType(Enum):
A4_PAPER = 'a4paper'
A5_PAPER = 'a5paper'
B5_PAPER = 'b5paper'
LETTER_PAPER = 'letterpaper'
LEGAL_PAPER = 'legalpaper'
class SensitivityLabels(Enum):
PROPRIETARY = 'Proprietary'
CONFIDENTIAL = 'Confidential'
SENSITIvE = 'Sensitive'
PUBLIC = 'Public'
def merge_pdf(pdfs: list[BytesIO]) -> BytesIO:
bytesio = BytesIO()
merger = PdfMerger()
for pdf in pdfs:
merger.append(pdf)
merger.write(bytesio)
merger.close()
return bytesio
def fix_si(amount):
prefixes = [
('T', 1e12),
('G', 1e9),
('M', 1e6),
('k', 1e3),
('', 1),
('m', 1e-3),
('µ', 1e-6),
('n', 1e-9)]
for prefix, factor in prefixes:
if amount >= factor:
return f'{amount / factor:.2f}{prefix}g'
return f'{amount}g'