├── LICENSE
├── Math in Mathcad15.png
├── Parsed to LaTeX.png
├── README.md
├── main.py
└── symbol_parser.py
/LICENSE:
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/Math in Mathcad15.png:
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https://raw.githubusercontent.com/ArtificialTruth/PTC-Mathcad-to-LaTeX-parser/0e2cd4ac57e0997ae40fabb263dcf6dc3d99d287/Math in Mathcad15.png
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/Parsed to LaTeX.png:
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https://raw.githubusercontent.com/ArtificialTruth/PTC-Mathcad-to-LaTeX-parser/0e2cd4ac57e0997ae40fabb263dcf6dc3d99d287/Parsed to LaTeX.png
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/README.md:
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1 | # PTC-Mathcad-to-LaTeX-parser
2 | A Python 3.x application to read PTC Mathcad 15 files and output them as LaTeX files.
3 | Doesn't fully work with everything yet. I've mainly added support for the math I use myself.
4 | Only tested on Mathcad 15 *.xmcd* files, the structure is probably different for other versions?
5 |
6 | This work is licensed under a [Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License](http://creativecommons.org/licenses/by-nc-sa/4.0/).
7 | [](http://creativecommons.org/licenses/by-nc-sa/4.0/)
8 |
9 | 
10 | 
11 |
12 | ## Quick (and dirty) guide
13 | 1. Install Anaconda for Python 3.x at https://www.continuum.io/downloads
14 | 2. Reboot?
15 | 3. Git clone this repository (Download all files)
16 | 4. Doubleclick main.py (or run the file from shell)
17 | 5. Click some buttons in the GUI
18 | 6. Pray that all your desired math is supported
19 |
20 | View the generated LaTeX file with a editor, or generate a pdf.
21 | I can recommend http://www.xm1math.net/texmaker/, which works on Windows, MacOsX and Linux.
22 | To be documented...
23 |
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/main.py:
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1 | # -*- coding: utf-8 -*-
2 | import xml.etree.ElementTree as ElemTree # Import the XML ElementTree module aliased as ET
3 | import io # Import used for more advanced file writing
4 | import os # Used for file name handling
5 | import numpy # Used for arrays, and more advanced math manipulation
6 | import base64 # Used for reading base64 encoded pictures
7 | from tkinter.filedialog import askopenfilename # Tkinter libs or selecting files in OS file picker
8 | from tkinter import Tk, Frame, Button, Label, StringVar, Entry # Used for the GUI
9 | # Other files
10 | from symbol_parser import symbol_parser # Import function which formats special charecters
11 |
12 |
13 | class ParseGUI(object):
14 | """Class used for the GUI
15 | The object parameter is the root widget for the Tkinter GUI
16 | """
17 |
18 | def __init__(self, master):
19 | """Constructor method
20 |
21 | :param master: A "master" wigdet
22 | """
23 | self.mainframe = Frame(master) # Create a Frame child widget
24 | self.mainframe.pack() # Make the widget visible
25 |
26 | self.path = '' # Define default path for the .xmcd file
27 | self.texfile_path = '' # Define path for the .tex file
28 |
29 | self.name = Label(self.mainframe, text="Welcome to Mathcad to LaTeX converter") # Create a static text label
30 | self.name.pack(side="top") # Make the widget visible and define location
31 |
32 | self.filename = StringVar() # Create a dynamic string variable
33 | self.filename.set("Current selected file: none") # Set the string value
34 | self.filename_label = Label(self.mainframe, textvariable=self.filename) # Create a label with the dynamic var
35 | self.filename_label.pack()
36 | self.text_updater = Entry(self.mainframe, textvariable=self.filename) # Create a Entry widget for auto updates
37 |
38 | self.status = StringVar() # Used for displaying the status of the file operation
39 | self.status.set("Status: Not parsed")
40 | self.status_label = Label(self.mainframe, textvariable=self.status)
41 | self.status_label.pack()
42 | self.text_updater2 = Entry(self.mainframe, textvariable=self.status)
43 |
44 | self.parse_file = Button(self.mainframe, text="Parse and save!", command=self.parse_file) # Button for parsing
45 | self.parse_file.pack(side="right")
46 |
47 | self.parse_file = Button(self.mainframe, text="Open LaTeX file", command=self.open_file)
48 | self.parse_file.pack(side="right")
49 |
50 | self.select_file = Button(self.mainframe, text="Select file", command=self.select_file) # Runs a class method
51 | self.select_file.pack(side="right")
52 |
53 | def select_file(self): # Method used for selecting a file
54 | self.path = askopenfilename() # Display native os file dialog for choosing a file
55 | self.filename.set("Current selected file: " + os.path.basename(self.path)) # Change the dynamic variable
56 | self.status.set("Status: Not parsed") # Set status
57 |
58 | def open_file(self): # Method used for opening the parsed LaTeX file
59 | self.texfile_path = os.path.dirname(self.path) + '/ParsedLatexFile/' + \
60 | os.path.splitext(os.path.basename(self.path))[0] + '.tex'
61 | if self.status.get() == "Status: File tried parsed! Look under the folder \ParsedLatexFile !":
62 | os.system("start " + "\"\" \"" + self.texfile_path + "\"")
63 |
64 | def parse_file(self): # Method for parsing the chosen file
65 | # Make sure a file is selected and it is a Mathcad file before trying to parse it
66 | if self.filename.get() != 'Current selected file: none' and os.path.splitext(self.path)[1] == '.xmcd':
67 | self.status.set("Status: Tring to parse... (most files takes a few seconds)")
68 | MathcadXMLParser(self.path) # Call the MathcadXMLParser class with the path
69 | self.status.set("Status: File tried parsed! Look under the folder \ParsedLatexFile !")
70 | # Display a error message to the user
71 | else:
72 | self.status.set("Status: You need to select a .xmcd (Mathcad) file!")
73 |
74 |
75 | class MathcadXMLParser(object):
76 | """Class used for reading Mathcad files and writing LaTeX files
77 |
78 | Parses the results from the file reading and saving it
79 | Takes in a object (the file path)
80 | """
81 |
82 | def __init__(self, filename):
83 | """The constructor method
84 |
85 | :param filename: A path to the targeted file
86 | """
87 |
88 | self.target_file = filename # Define the filename as a class variable
89 | self.filename = os.path.basename(self.target_file).replace('.xmcd', '') # Get the file name, remove extension
90 | math_tree_ok = True # As a starting point, the file is ok
91 |
92 | try: # Try to parse the file into a ElementTree
93 | self.math_tree = ElemTree.parse(self.target_file).getroot() # Our full XML as an ElementTree
94 |
95 | except ElemTree.ParseError: # Run if XML structure is corrupted
96 | print("Corrupted Mathcad document! Could not parse.")
97 | math_tree_ok = False # Make sure rest of file is not tried parsed
98 |
99 | self.ml = "{http://schemas.mathsoft.com/math30}" # Variable for namespaces as URI, used in prefixes
100 | self.ws = "{http://schemas.mathsoft.com/worksheet30}"
101 |
102 | self.output_folder = os.path.dirname(self.target_file) + "/ParsedLatexFile"
103 | if not os.path.exists(self.output_folder): # If this folder doesn't exist
104 | os.makedirs(self.output_folder) # Create it
105 |
106 | # Open a new tex file for writing. Encoding for Danish chars etc. Save in a folder
107 | self.tex_file = io.open(self.output_folder + "/" + self.filename + '.tex', 'w', encoding="utf-8")
108 |
109 | # Standard LaTeX document info as strings
110 | self.start_latex_doc = "\\documentclass[10pt,a4paper]{report}\n\\usepackage[utf8]{inputenc}\n" \
111 | "\\usepackage[T1]{fontenc}\n\\usepackage{amsmath}\n\\usepackage{amsfonts}\n" \
112 | "\\usepackage{amssymb}\n\\usepackage{graphicx}\n\\begin{document}\n\\noindent\n"
113 |
114 | self.end_latex_doc = "\\end{document}"
115 |
116 | self.matrix_array = [] # Array to use for multiple values in matrixes
117 |
118 | self.current_region_no = 0 # To keep track of regions in mathcad file, as they are being read
119 |
120 | self.debug = True # Toggle debug messages
121 |
122 | if math_tree_ok: # Only run if file isn't corrupted
123 | self.main() # Run main method
124 |
125 | def math_reader(self, elem):
126 | """Method for getting the math out of the XML file
127 |
128 | This method is used for reading the XML file (the ElementTree).
129 | Generally speaking this method gathers the data, the
130 | latex_formatter method uses to format the data into LaTeX.
131 | So no LaTeX-specific formatting is done in this method.
132 | Recursive method for efficiency and simplicity.
133 |
134 | This method is used for math Mathcad regions.
135 | :param elem: A ElementTree
136 | :return: Full LaTeX formatted math expressions
137 | """
138 | elem.tag = elem.tag.replace(self.ml, "") # Only leave operator name left without prefix
139 |
140 | if elem.tag == "apply": # If current Element's tag is apply
141 | # We need two cases; One for apply tag which includes a operator, and everything else
142 | # The first will always be the operator, if there's one
143 | if self.debug: print("Apply tag found")
144 |
145 | # Either there's a operator (2 or 3 childs, first element is always the operator)
146 | if bool(elem[0]) is False and elem[0].text is None: # Checks if the elem has children and doesn't have text
147 | if self.debug: # Only prints debug messages if debug = True
148 | print("Apply tag includes a operator")
149 |
150 | if len(elem) == 3: # Either there's 3 parts (normal mathemathical expression)
151 | if self.debug:
152 | print("len(elem)", len(elem))
153 | val1 = self.math_reader(elem[1]) # Call this method again with 2nd child again to get first value
154 | val2 = self.math_reader(elem[2]) # Call this method again with 3rd child again to get second value
155 | # Return the formatted result (by calling math_formatter), to the original caller of this method
156 | return self.latex_formatter(elem[0].tag, val1, val2) # Sends the operator and the two values
157 |
158 | elif len(elem) == 2: # Used for other operators where there's only "two" parts
159 | if self.debug: print("len(elem)", len(elem))
160 | val1 = self.math_reader(elem[1]) # Call this method again, skip the operator tag elem
161 | return self.latex_formatter(elem[0].tag, val1) # Get first child's tag which is the operator
162 |
163 | # ToDo: Make a more general way of handling apply tags?
164 | # Or there's no operator - this is the case for ex cos(x)
165 | # One of the 2 childs, must have children too, or text
166 | elif bool(elem[0]) or bool(elem[1]) or elem[0].text or elem[1].text is not None:
167 | val1 = self.math_reader(elem[0])
168 | val2 = self.math_reader(elem[1])
169 | return self.latex_formatter(elem.tag, val1, val2)
170 |
171 | # ToDo?: The following else tag checks, are only for non-operator tags, elements with no children or text
172 | elif elem.tag == "parens": # Handle parenteses
173 | return self.latex_formatter(elem.tag, self.math_reader(elem[0])) # Only 1 value between parenteses
174 |
175 | # Current tag is some kind of equal sign
176 | elif elem.tag == "define" or elem.tag == "symEval":
177 | if self.debug: print("A type of equal expression found.")
178 | return self.latex_formatter(elem.tag, self.math_reader(elem[0]), self.math_reader(elem[1]))
179 |
180 | # Eval works like normal equal operator, if the result is not defined using "define"
181 | # ToDo: add a way to handle non-user defined units in the result, and possibly add library to format to LaTeX?
182 | elif elem.tag == "eval":
183 | # Either the evaluated expression doesn't have a user defined unit in the result
184 | if len(elem) == 2:
185 | return self.latex_formatter(elem.tag, self.math_reader(elem[0]), self.math_reader(elem[1]))
186 |
187 | # Or it does, and we can use that as the unit
188 | elif len(elem) == 3:
189 | value_and_unit = self.math_reader(elem[2]) + self.math_reader(elem[1])
190 | return self.latex_formatter(elem.tag, self.math_reader(elem[0]), value_and_unit)
191 |
192 | elif elem.tag == "provenance": # Interesting Mathcad structure handled here
193 | return self.math_reader(elem[len(elem) - 1]) # Simply call this method again with the last child element
194 |
195 | elif elem.tag == "id": # Current tag is pure text
196 | if self.debug: print("Text found:", elem.text)
197 | return self.latex_formatter(elem.tag, elem) # Call external function with text
198 |
199 | elif elem.tag == "real": # Current is a real number
200 | if self.debug: print("Number found:", elem.text)
201 | return elem.text # Simply return the value as string
202 |
203 | # Result is used with equal signs, boundVars is used for special variables
204 | # degree is used for n'te degree derivatives
205 | # symResult is a result from a symbolic evaluation
206 | elif elem.tag == "result" or elem.tag == "boundVars" or elem.tag == "degree" or elem.tag == "symResult":
207 | if self.debug: print("Result found.")
208 | return self.math_reader(elem[0])
209 | # return elem[0][0].text # Simply return the value as string
210 |
211 | elif elem.tag == "vectorize": # Current tag is a vector notation
212 | if self.debug: print("Vector found.")
213 | return self.latex_formatter(elem.tag, self.math_reader(elem[0]))
214 |
215 | elif elem.tag == "matrix": # Currrent tag is a matrix
216 | if self.debug: print("Matrix found.")
217 |
218 | # Run through every entity in the matrix, and add it to a list
219 | for entity in elem:
220 | # Convert every entity in to string, for supporting advanced expressions in matrix
221 | self.matrix_array.append(str(self.math_reader(entity))) # Recursive, to handling everything :D
222 |
223 | numpy_matrix_array = numpy.array(self.matrix_array) # Convert from list to a numpy array for manipulation
224 | array_dimensions = (int(elem.attrib["rows"]), int(elem.attrib["cols"])) # Grap the ints from the attribute
225 | numpy_matrix_array = numpy.reshape(numpy_matrix_array, array_dimensions) # Transform from flat array
226 | if array_dimensions[0] > 1 and array_dimensions[1] > 1: # Only transpose if there's more than 1 col or row
227 | numpy_matrix_array = numpy.transpose(numpy_matrix_array) # Flip array around to fit LaTeX structure
228 |
229 | self.matrix_array = [] # Reset matrix array
230 | return self.latex_formatter(elem.tag, numpy_matrix_array, array_dimensions) # Send array and the dimensons
231 |
232 | elif elem.tag == "placeholder": # Current tag is just a placeholder
233 | if self.debug:
234 | print("Empty placeholder found.")
235 | return " " # Return space
236 |
237 | elif elem.tag == "lambda" or elem.tag == "bounds":
238 | # lambda is used for both derivative and integral (+ more?!).
239 | # bounds is used for integral with limits
240 | # Therefore the latex_formatter must handle it, we can't go backwards in elements?
241 | return elem
242 |
243 | elif elem.tag == "unitedValue" or elem.tag == "unitOverride": # Value and/or unit
244 | if self.debug:
245 | print("Unit stuff found.")
246 | return self.math_reader(elem[0])
247 |
248 | elif elem.tag == "function":
249 | if self.debug:
250 | print("Function found.")
251 | return self.latex_formatter(elem.tag, self.math_reader(elem[0]), self.math_reader(elem[1]))
252 |
253 | else: # For unsupported tags
254 | print("Error, non-supported tag found at region",
255 | self.current_region_no) # Print the problematic region number
256 | print("Current Elem.tag:", elem.tag) # Debug message
257 |
258 | def text_reader(self, elem):
259 | """Parses Mathcad text regions paragraph by paragraph.
260 | It loops through each paragraph, and add new
261 | :param elem: The ElementTree that contains text, structure: ...
262 | :return: Formatted text with escape chars
263 | """
264 | text = "" # Variable to store found text
265 |
266 | if self.debug:
267 | print("Type: Text region.")
268 |
269 | # For each paragraph ...
, in the text "element" object: ...
270 | for i, paragraph in enumerate(elem, start=1):
271 |
272 | # Add text from start of paragraph
273 | if paragraph.text is not None and ("\t" not in paragraph.text):
274 | text += paragraph.text
275 |
276 | # If paragraph has children (can be multiple lines of text, math region, or bold/italic etc text)
277 | text += self.text_piece_formatter(paragraph)
278 |
279 | # Add tailing text for paragraph
280 | if (paragraph.tail is not None) and ("\t" not in paragraph.tail):
281 | text += paragraph.tail
282 |
283 | # Add newline after every paragraph that isn't the last
284 | if i <= len(elem):
285 | text += " \\\\\n"
286 |
287 | # For the last paragraph (no newline)
288 | else:
289 | text += " \\\\"
290 |
291 | # Make sure symbols are parsed correctly
292 | return symbol_parser(text, False)
293 |
294 | def text_piece_formatter(self, paragraph_elem):
295 | """Method to handle pieces of text in a paragraph.
296 | Can be boldface, italic etc, with different combinations of these
297 | We use depth first search to find text and format it using latex syntax.
298 |
299 | :param paragraph_elem: The ElementTree that contains a line of text to format
300 | :return: String with formatted using LaTeX syntax"""
301 |
302 | # String to store our text
303 | text = ""
304 |
305 | # Mapping from Mathcad xml tags to latex
306 | emphasis_latex = {
307 | "b": "\\textbf",
308 | "i": "\\textit",
309 | "u": "\\underline",
310 | "sup": "\\textsuperscript"
311 | }
312 |
313 |
314 | # Loop through each piece of text in the paragraph. The order of below if statments follows mathcad structure
315 | for text_piece in paragraph_elem:
316 | # Remove self.ws from tag for easier lookup
317 | current_emphasis_tag = text_piece.tag.replace(self.ws, "")
318 |
319 | # Check if current tag is a emphasis formatting tag recognized in LaTeX
320 | if current_emphasis_tag in emphasis_latex:
321 | # Add start of latex formatting tag. Remove self.ws to lookup in our dict
322 | text += emphasis_latex[current_emphasis_tag] + "{"
323 |
324 | # Check if there's text to grab, if yes, add it to the string
325 | if text_piece.text is not None:
326 |
327 | # Check text is not only tab charecters
328 | if "\t" not in text_piece.text:
329 | text += text_piece.text
330 |
331 | # If the tag is "region" then we have found a math region
332 | if current_emphasis_tag == "region":
333 |
334 | # Call math_reader to format the math
335 | text += " $ " + self.math_reader(text_piece[0][0]) + " $ "
336 |
337 | # Add tailing text, if it exists, not if it's just tab (\t)
338 | if (text_piece.tail is not None) and ("\t" not in text_piece.tail):
339 | text += text_piece.tail
340 |
341 | # Skip sibling tags since they are handled with above code
342 | continue
343 |
344 | # Add (ace) charecters in mid-sentences specified by attribute "count" for tag
345 | if current_emphasis_tag == "sp":
346 |
347 | # Check if "count" attribute (key) exists
348 | if "count" in text_piece.attrib:
349 | number_of_spaces = int(text_piece.attrib["count"])
350 |
351 | # If there's no attribute, there's only one space
352 | else:
353 | number_of_spaces = 1
354 |
355 | text += " " * number_of_spaces
356 |
357 | # Go deeper if possible
358 | # If theres children, there's no text to grap, we need to go a level deeper to find text
359 | # (Check if text_piece has children which occurs using nested-formatting (eg __**bold&underlined**__))
360 | # The "f" tag is used for specificng fonts in mathcad, but we don't care about font went exporting to LaTeX
361 | if bool(text_piece):
362 | # Go one level deeper in the tree
363 | text += self.text_piece_formatter(text_piece)
364 |
365 | # Add the last part of LaTeX formatting
366 | if current_emphasis_tag in emphasis_latex:
367 | # Add text and end of latex formatting tag }
368 | text += "}"
369 |
370 | # Add tailing text, if it exists, not if it's just tab (\t)
371 | if (text_piece.tail is not None) and ("\t" not in text_piece.tail):
372 | text += text_piece.tail
373 |
374 |
375 | return text
376 |
377 | def picture_reader(self, elem):
378 | """Method for reading binary picture data
379 |
380 | This method converts the desired picture from base64 data to a .png image
381 | :param elem: The picture region as a ElementTree
382 | :return: The LaTeX code including the image file
383 | """
384 | image_id = int(elem[0].attrib["item-idref"]) # Grap the image ID from the elements attributes
385 | image_base64_data = self.math_tree[4][image_id - 1].text # Find the image data in the binaryContent part
386 | image_base64_data = image_base64_data.encode(encoding='UTF-8') # Encode string as bytes instead
387 | filename = self.filename + "_" + str(image_id) + ".png"
388 | filename_no_ext = self.filename + "_" + str(image_id)
389 |
390 | # Open a new file for writing, name it the filename_id
391 | with open(self.output_folder + "/" + filename, "wb") as imagefile: # Open the file, and close it afterwards
392 | imagefile.write(base64.decodebytes(image_base64_data)) # Write the decoded base64 bytes to the file
393 |
394 | return "\\includegraphics{\"" + filename_no_ext + "\"}"
395 |
396 | def latex_formatter(self, operator, x, y=None): # Define the value of y
397 | """LaTeX math syntax formatter metod
398 |
399 | This method takes in the data math_reader() has found in the XML file,
400 | and formats it into LaTeX expressions.
401 |
402 | :param operator: A math operator or similar
403 | :param x: The first part of the expression
404 | :param y: The last part of the expression - Default value: None
405 | :return: Math expression formatted in LaTeX format
406 | """
407 | operator = operator.replace(self.ml, "") # Remove prefix from operator
408 |
409 | operators_mathcad_tag_to_latex = {
410 | 'plus': "{x} + {y}",
411 | 'minus': "{x} - {y}",
412 | 'mult': "{x} \\cdot {y}",
413 | 'div': "\\frac{{{x}}}{{{y}}}",
414 | 'eval': '{x} = {y}',
415 | 'equal': '{x} = {y}',
416 | 'define': '{x} = {y}',
417 | 'symEval': '{x} = {y}',
418 | 'pow': '{x}^{{{y}}}',
419 | 'nthRoot': "\\sqrt[{x}]{{{y}}}",
420 | 'lessThan': '{x} < {y}',
421 | 'greaterThan': '{x} > {y}',
422 | 'lessOrEqual': '{x} \\leq {y}',
423 | 'greaterOrEqual': '{x} \\geq {y}',
424 | 'and': '{x} \\land {y}',
425 | 'or': '{x} \\lor {y}',
426 | 'apply': '{x}\\left({y}\\right)', # Return two strings that needs to be merged
427 | 'function': '{x}\\left({y}\\right)',
428 | 'indexer': '{x}_{{{y}}}',
429 | 'parens': '\\left({x}\\right)',
430 | 'sqrt': '\\sqrt{{{x}}}', # Latex output: \sqrt{x} double {{ to esc
431 | 'absval': '\\left|{x}\\right|',
432 | 'neg': '-{x}',
433 | 'vectorize': '\\vec{{{x}}}'
434 | }
435 |
436 | if y is not None: # y exists, so there's two components to parse
437 | if self.debug: print("y given")
438 |
439 | if operator in operators_mathcad_tag_to_latex:
440 | return operators_mathcad_tag_to_latex[operator].format(x=x, y=y)
441 |
442 | elif operator == "matrix":
443 | string = "\\begin{pmatrix}\n"
444 | i2 = 1
445 | # Rows and cols in the matrix, taken from the y tuple
446 | rows = y[0]
447 | cols = y[1]
448 |
449 | # We have 2 counters; one to keep track of current row (i), one for col (i2)
450 | for i in range(0, rows): # Run this loop the amount of rows there exists
451 | for entity in x[i, :]: # For each value in the i'nte row
452 | if i2 == cols: # RNS checkmate
453 | string += entity
454 | else:
455 | string = string + entity + " & "
456 | i2 += 1
457 | i2 = 1
458 | string += "\\\\\n"
459 |
460 | string += "\\end{pmatrix}"
461 | return string
462 |
463 | elif operator == "integral": # For integrals with limits
464 | lim_a = self.math_reader(y[0])
465 | lim_b = self.math_reader(y[1])
466 | var = self.math_reader(x[0])
467 | func = self.math_reader(x[1])
468 | return "\\int_{" + lim_a + "}^{" + lim_b + "} " + func + " d" + var
469 |
470 | elif operator == "derivative": # For n'te derivative notation
471 | return "\\frac{d^" + y + "}{d" + self.math_reader(x[0]) + "^" + y + "}" + self.math_reader(x[1])
472 |
473 | else:
474 | return "Unhandled tag (y given) :("
475 |
476 | else: # Else, there is only 1 value
477 | if self.debug: print("No y given")
478 |
479 | if operator in operators_mathcad_tag_to_latex:
480 | print(operators_mathcad_tag_to_latex[operator].format(x=x))
481 | return operators_mathcad_tag_to_latex[operator].format(x=x)
482 |
483 | if operator == "id":
484 | # Make sure subscript attribute exists
485 | if x.get("subscript") is not None:
486 |
487 | upper_text = symbol_parser(x.text, True)
488 |
489 | # Get attribute's values and send to symbol_parser
490 | sub_text = symbol_parser(x.attrib["subscript"], True)
491 |
492 | return upper_text + "_{" + sub_text + "}"
493 | else:
494 | return symbol_parser(x.text, True)
495 |
496 | elif operator == "derivative": # For derivative notation
497 | return "\\frac{d}{d" + self.math_reader(x[0]) + "}" + self.math_reader(x[1])
498 |
499 | elif operator == "integral": # For integrals.
500 | var = self.math_reader(x[0])
501 | func = self.math_reader(x[1])
502 | return "\\int " + func + " d" + var
503 |
504 | else:
505 | return "Unhandled tag (y given) :("
506 |
507 | def main(self):
508 | """Method for controlling file writing
509 |
510 | Writes the final results to the new .tex file
511 | """
512 | self.tex_file.write(self.start_latex_doc) # Write start of LaTeX document
513 |
514 | for child in self.math_tree[3]: # Run for each region containing math or text
515 | self.current_region_no += 1 # Update counter
516 | print("\nTrying to parse the " + str(self.current_region_no) + "' region") # Line separator for ouput
517 | # ToDo: Print the actual region-id
518 | # print("(region-id: " + child[0].attr["region-id"] + ")")
519 |
520 | try: # Try to parse
521 | # ToDo: Smart align, that check for next region, if it's text or not?
522 | if child[0].tag == self.ws + "math": # Math region
523 | if self.debug: print("Type: Math region.")
524 | # Write result of the region by calling fuction which sends the current element
525 | self.tex_file.write("\\begin{align}\n" + self.math_reader(child[0][0]) + "\n\\end{align}\\\\\n\n")
526 |
527 | elif child[0].tag == self.ws + "text": # Handle pure text regions
528 | if self.debug: print("Type: Text region.")
529 | self.tex_file.write(self.text_reader(child[0]) + "\n")
530 |
531 | elif child[0].tag == self.ws + "picture": # Handle pure picture regions
532 | if self.debug: print("Type: Picture region.")
533 | self.tex_file.write(self.picture_reader(child[0]) + "\\\\\n")
534 |
535 | # Catch the most common error
536 | except TypeError as e:
537 | print("Unsupported expessions found OR error occured, could not parse region", self.current_region_no, "Error:", str(e))
538 |
539 | self.tex_file.write(self.end_latex_doc) # Write end of LaTeX document
540 |
541 |
542 | root_widget = Tk() # Initialize Tkinter by creating a root widget others will be children of
543 | new_app = ParseGUI(root_widget) # Create a new instance of the ParseGUI class using the root widget as a parent
544 |
545 | root_widget.wm_title("Mathcad to LaTeX converter") # Set window title
546 | root_widget.geometry('380x90') # Set window size
547 | root_widget.resizable(width=False, height=False) # Make the window non-resizable
548 | root_widget.mainloop() # Start a loop that ends when the quit event is called (X button on window)
549 |
--------------------------------------------------------------------------------
/symbol_parser.py:
--------------------------------------------------------------------------------
1 | # coding=UTF-8
2 |
3 | # Define a few special charecters in a dictonary
4 | symbol_dictionary = {'&': '\\&',
5 | 'π': '\\pi ',
6 | 'α': '\\alpha ',
7 | '': '\\epsilon ',
8 | 'φ': '\\phi ',
9 | 'θ': '\\theta ',
10 | 'ρ': '\\rho ',
11 | 'µ': '\\mu ',
12 | '∆': '\\Delta ',
13 | 'ε': '\\varepsilon ',
14 | 'ϕ': '\\Phi ',
15 | # For now, don't use these chars in mathmode...
16 | #'æ': '\\textit{æ} ',
17 | #'Æ': '\\textit{Æ} ',
18 | #'ø': '\\textit{ø} ',
19 | #'Ø': '\\textit{Ø} ',
20 | #'å': '\\textit{å} ',
21 | #'Å': '\\textit{Å} ',
22 | '⇕': '\\Updownarrow ',
23 | '⇔': '\\Leftrightarrow ',
24 | 'ω': '\\omega',
25 | 'Ω': '\\Omega',
26 | '&': '\\&',
27 | 'γ' : '\\gamma',
28 | 'τ' : '\\tau',
29 | 'σ' : '\\sigma'} # ToDo: Add more of these...
30 |
31 |
32 | def symbol_parser(str_with_symbols, mathmode):
33 | """Parses symbols into LaTeX symbols
34 |
35 | :param str_with_symbols: A string which is the given symbol that needs to be checked
36 | :return: Formatted LaTeX symbol or what was given
37 | """
38 | if mathmode: # return the "pure" string
39 | for unicode_symbol in symbol_dictionary: # Check entire dictionary
40 | try: # Try to replace the given symbol
41 | str_with_symbols = str_with_symbols.replace(unicode_symbol, symbol_dictionary[unicode_symbol])
42 | except unicode_symbolError: # If it fails, just skip it
43 | pass
44 |
45 | return str_with_symbols # Return the parsed symbol
46 |
47 | elif mathmode is False: # return the parsed string with $ $ to create a LaTeX math mode region
48 | for unicode_symbol in symbol_dictionary: # Check entire dictionary
49 | try: # Try to replace the given symbol
50 | str_with_symbols = str_with_symbols.replace(unicode_symbol, "$" + symbol_dictionary[unicode_symbol] + "$")
51 | except unicode_symbolError: # If it fails, just skip it
52 | pass
53 |
54 | return str_with_symbols # Return the parsed symbol
55 |
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