sublimetext plugin to convert latex to html and pdf to png

htlatex.py

import sublime
import sublime_plugin
import os
import subprocess
import threading


class HtlatexCommand(sublime_plugin.TextCommand):

    def run(self, edit, filename=None):
        filename = self.view.file_name()
        th = HtlatexThread(filename)
        if not filename is None and \
                os.path.splitext(filename)[1] == '.tex':
            th.start()


class HtlatexThread(threading.Thread):

    def __init__(self, filename=None):
        self.filename = filename
        threading.Thread.__init__(self)

    def run(self):
        first_dir = os.path.abspath(os.getcwd())
        new_file_with_dir = os.path.abspath(self.filename)
        new_dir = os.path.dirname(new_file_with_dir)
        filename = os.path.basename(new_file_with_dir)
        os.chdir(new_dir)
        makefile = [x for x in os.listdir(new_dir) if
                    os.path.splitext(x)[-1] == '.mk4']
        if filename is not None and \
                os.path.splitext(filename)[-1] == '.tex':
            if len(makefile) > 0:
                subprocess.Popen(['make4ht', filename, '-e', makefile[0]])
            else:
                subprocess.Popen(['make4ht', '-ul', filename])
        else:
            pass
        os.chdir(first_dir)

latex2png.py

import sublime
import sublime_plugin
import os
import subprocess
import threading

class Latex2pngCommand(sublime_plugin.TextCommand):

    def run(self, edit, filename=None):
        filename = self.view.file_name()
        th = Latex2pngThread(filename)
        if not filename is None and \
                os.path.splitext(filename)[1] == '.tex':
            th.start()


class Latex2pngThread(threading.Thread):

    def __init__(self, filename=None):
        self.filename = filename
        threading.Thread.__init__(self)

    def run(self):
        first_dir = os.path.abspath(os.getcwd())
        file_with_dir = os.path.abspath(self.filename)
        new_dir = os.path.dirname(file_with_dir)
        os.chdir(new_dir)
        filename_with_ext = os.path.basename(file_with_dir)
        filename, fileext = os.path.splitext(filename_with_ext)
        pdf_file_names = [os.path.splitext(x)[0]
                          for x in os.listdir(new_dir) if
                          os.path.splitext(x)[-1] == '.pdf']
        if filename is not None \
                and fileext == '.tex' and filename in pdf_file_names:
            infile = os.path.join(os.path.abspath(
                os.curdir), filename + '.pdf')
            outfile = os.path.join(os.path.abspath(
                os.curdir), filename + '.png')
            magick_command = [
                'magick', '-density', '150',
                '-units', 'PixelsPerInch',
                infile,
                '-quality', '90',
                outfile]
            print('running magick')
            p = subprocess.Popen(magick_command,
                                 stderr=subprocess.STDOUT,
                                 stdout=subprocess.PIPE,
                                 shell=True)
            output, errors = p.communicate()
            print('args')
            print(p.args)
            print('errors')
            print(errors)
            print('output')
            print(output)
            print('output file: ' + outfile)
            print('removing input file: ' + infile)
            os.remove(infile)
            
        else:
            pass
        os.chdir(first_dir)