2023-05-03 14:59:06 +02:00
|
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"""
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Program for converting Latex files into html files
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"""
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2023-05-22 23:47:47 +02:00
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2023-05-03 21:41:49 +02:00
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def command_name_check(latex_string, command_name):
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2023-05-22 23:47:47 +02:00
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if latex_string[1: (len(command_name) + 1)] != command_name:
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2023-05-31 03:41:01 +02:00
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print(latex_string + "Error! command misspeled!")
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2023-05-03 21:41:49 +02:00
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return "Error!"
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return
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2023-05-22 23:47:47 +02:00
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2023-05-03 20:55:46 +02:00
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def generic_checks(latex_string):
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if latex_string == "":
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2023-05-31 03:41:01 +02:00
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print(latex_string + "Error! No input given to function")
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2023-05-03 20:55:46 +02:00
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return "Error!"
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if "}" not in latex_string:
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2023-05-31 03:41:01 +02:00
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print(latex_string + "Error! curly bracket not closed!")
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2023-05-03 20:55:46 +02:00
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return "Error!"
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2023-05-10 18:16:28 +02:00
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return
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2023-05-22 23:47:47 +02:00
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2023-05-10 18:16:28 +02:00
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def generic_checks_command(latex_string):
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if generic_checks(latex_string) == "Error!":
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return "Error!"
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2023-05-03 20:55:46 +02:00
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if latex_string[0] != "\\":
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2023-05-31 03:41:01 +02:00
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print(latex_string + "Error! has no slash at begining")
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2023-05-03 20:55:46 +02:00
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return "Error!"
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2023-05-03 21:41:49 +02:00
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return
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2023-05-03 20:55:46 +02:00
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2023-05-03 14:59:06 +02:00
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def document_class(latex_string):
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2023-05-03 20:29:08 +02:00
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r"""
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2023-05-03 14:59:06 +02:00
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Converts LaTeX documentclass method to html
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2023-05-03 20:29:08 +02:00
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\documentclass{article}
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2023-05-03 14:59:06 +02:00
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"""
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2023-05-10 18:16:28 +02:00
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if generic_checks_command(latex_string) == "Error!":
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2023-05-03 20:29:08 +02:00
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return "Error!"
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if latex_string[len("\\documentclass{") - 1] != "{":
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2023-05-31 03:41:01 +02:00
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print(latex_string + "Error! curly bracket not opened!")
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2023-05-03 20:29:08 +02:00
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return "Error!"
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2023-05-03 21:41:49 +02:00
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if command_name_check(latex_string, "documentclass") == "Error!":
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2023-05-03 20:29:08 +02:00
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return "Error!"
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2023-05-22 23:47:47 +02:00
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document_type = latex_string[len(
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"\\documentclass{"): (len(latex_string) - 1)]
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2023-05-03 20:55:46 +02:00
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return "<!DOCTYPE html>"
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def begin_document(latex_string):
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r"""
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Converts LaTeX begin document method to html
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\begin{document}
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"""
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2023-05-10 18:16:28 +02:00
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if generic_checks_command(latex_string) == "Error!":
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2023-05-03 20:55:46 +02:00
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return "Error!"
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2023-05-03 21:41:49 +02:00
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if command_name_check(latex_string, "begin") == "Error!":
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2023-05-03 20:55:46 +02:00
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return "Error!"
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return "<html>"
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2023-05-22 23:47:47 +02:00
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2023-05-03 21:41:49 +02:00
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def begin_tabular(latex_string):
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r"""
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Checks if LaTeX begin tabular method is correct
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"""
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2023-05-10 18:16:28 +02:00
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if generic_checks_command(latex_string) == "Error!":
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2023-05-03 21:41:49 +02:00
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return "Error!"
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if command_name_check(latex_string, "begin") == "Error!":
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return "Error!"
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return "<table>"
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2023-05-22 23:47:47 +02:00
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2023-05-03 21:41:49 +02:00
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def tabular_parameters(latex_string):
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r"""
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Checks if LaTeX tabular environment has any parameters
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"""
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if latex_string == "":
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return ""
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if latex_string == "[]":
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return ""
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return "Error!"
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2023-05-22 23:47:47 +02:00
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2023-05-30 22:43:42 +02:00
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def only_pipes_and_space(latex_string):
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"""Checks if latex string only contains | or " ", if yes returns True, if no returns false"""
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return all(char == '|' or char == ' ' or char == '{' or char == '}' for char in latex_string)
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def main_tabular_parameters_loop(latex_string, simple_parameters_dictionary):
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return_array = []
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i = 0
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latex_string_length = len(latex_string)
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while i < latex_string_length:
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character = latex_string[i]
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if character in ['l', 'c', 'r', '|']:
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return_array.append(
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simple_parameters_dictionary.get(latex_string[i]))
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i += 1
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continue
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|
if character in ['p', 'm', 'b']:
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closing_bracket = latex_string.find('}', i + 1)
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columns_string = latex_string[i:closing_bracket + 1]
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result = tabular_columns_parameters(columns_string)
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if result == "Error!":
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return result
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|
return_array.append(result)
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|
i = closing_bracket
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continue
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i += 1
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|
return return_array
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|
2023-05-22 23:47:47 +02:00
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|
def tabular_required_parameters(latex_string):
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2023-05-10 18:16:28 +02:00
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|
if generic_checks(latex_string) == "Error!":
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|
return "Error!"
|
2023-05-22 23:47:47 +02:00
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|
if latex_string == "{}":
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|
print("tabular_required_parameters, required table parameters are empty!:", latex_string)
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|
return "Error!"
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|
|
simple_parameters_dictionary = {
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"l": "align='left'",
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"c": "align='center'",
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"r": "align='right'",
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2023-05-31 02:14:25 +02:00
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"|": "style='border-left: 1px solid black'"
|
2023-05-22 23:47:47 +02:00
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}
|
2023-05-30 22:43:42 +02:00
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|
if only_pipes_and_space(latex_string):
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|
print("tabular_required_parameters, required table parameters are only pipes and spaces!:", latex_string)
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|
return "Error!"
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return main_tabular_parameters_loop(latex_string, simple_parameters_dictionary)
|
2023-05-10 18:16:28 +02:00
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|
2023-05-22 23:47:47 +02:00
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|
2023-05-10 18:16:28 +02:00
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def length_conversions(latex_length):
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length_dictionary = {
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"pt": [1.3, "px"],
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"mm": [1, "mm"],
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"cm": [1, "cm"],
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"in": [1, "in"],
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"ex": [1, "ex"],
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"em": [1, "em"],
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}
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|
return length_dictionary.get(latex_length, "Error!")
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|
2023-05-22 23:47:47 +02:00
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def tabular_columns_parameters(latex_string):
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if generic_checks(latex_string) == "Error!":
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return "Error!"
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|
|
parameter_dictionary = {
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"p": "vertical-align: top;",
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|
"m": "vertical-align: middle;",
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"b": "vertical-align: bottom;"
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}
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vertical_align_type = parameter_dictionary.get(latex_string[0], "Error!")
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|
|
if vertical_align_type == "Error!":
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|
print("tabular_columns_parameters, unknown parameter: ",
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|
latex_string[0])
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return "Error!"
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|
|
if latex_string[1] != '{':
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|
print(
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|
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"tabular_columns_parameters, parameter length does not start with {", latex_string)
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|
return "Error!"
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|
|
length_parameter_with_bracket = latex_string.partition("{")[2]
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|
length_parameter = length_parameter_with_bracket.partition("}")[0]
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length_value = ""
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i = 0
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for character in length_parameter:
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|
|
if character.isalpha():
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|
|
break
|
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|
length_value += character
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|
i += 1
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|
length_unit = length_parameter[i:]
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|
|
conversed_unit = length_conversions(length_unit)
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|
|
if conversed_unit == "Error!":
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|
print("tabular_columns_parameters, Unit could not be conversed!", latex_string)
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|
return "Error!"
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|
final_length = round(float(length_value) * conversed_unit[0], 2)
|
2023-05-31 02:14:25 +02:00
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|
return_string = "style='" + vertical_align_type + \
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|
" width: " + str(final_length) + conversed_unit[1] + ";'"
|
2023-05-22 23:47:47 +02:00
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|
return return_string
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|
2023-05-31 02:14:25 +02:00
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|
def split_rows(latex_string):
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|
double_backslash = "\\"
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rows = latex_string.split(double_backslash)
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|
return rows
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def split_columns(table_row, column_count):
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columns = table_row.split("&")
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|
if len(columns) != column_count and columns != ['']:
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2023-05-31 03:41:01 +02:00
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|
2023-05-31 02:14:25 +02:00
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return "Error!"
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return columns
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def translate_column(latex_column):
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|
hline_string_literal = "\hline"
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replaced_hline = latex_column.replace(hline_string_literal, "<hr>")
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|
replaced_newline = replaced_hline.replace('\newline', "<br>")
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return replaced_newline
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def translate_inside_to_html(latex_table_inside, column_style):
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return_string = "<html> <table>"
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|
|
column_amount = 0
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|
line_string = "style='border-left: 1px solid black'"
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for style in column_style:
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|
|
if style != line_string:
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|
column_amount += 1
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|
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rows = split_rows(latex_table_inside)
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|
for row in rows:
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return_string += "<tr>"
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|
columns = split_columns(row, column_amount)
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|
column_number = 0
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for column in columns:
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return_string += "<td "
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|
|
current_style = column_style[column_number]
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|
while current_style == line_string:
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|
return_string += line_string
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|
column_number += 1
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|
current_style = column_style[column_number]
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return_string += column_style[column_number] + ">"
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|
|
return_string += translate_column(column)
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|
|
column_number += 1
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|
return_string += "</td>"
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|
return_string += "</tr>"
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|
|
return_string += " </table> </html>"
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|
return return_string
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|
|
2023-05-31 03:41:01 +02:00
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|
|
def read_file(tex_filename):
|
2023-05-31 02:14:25 +02:00
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|
|
tex_file = open(tex_filename, "r")
|
2023-05-31 03:41:01 +02:00
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|
|
data = tex_file.read().replace('\n', '')
|
2023-05-31 02:14:25 +02:00
|
|
|
tex_file.close()
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|
|
return data
|
2023-05-03 20:29:08 +02:00
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|
2023-05-22 23:47:47 +02:00
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|
2023-05-31 03:41:01 +02:00
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|
|
def read_document_class(latex_full_string):
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|
|
document_class_index = latex_full_string.find("\documentclass")
|
2023-05-31 02:14:25 +02:00
|
|
|
if document_class_index == -1:
|
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|
|
print("Main function error! documentclass not found")
|
|
|
|
|
return "Error!"
|
2023-05-31 03:41:01 +02:00
|
|
|
document_class_close_bracket = latex_full_string.find(
|
|
|
|
|
"}", document_class_index)
|
|
|
|
|
document_class_string = latex_full_string[document_class_index:document_class_close_bracket + 1]
|
|
|
|
|
latex_full_string = latex_full_string[document_class_close_bracket + 1:len(
|
|
|
|
|
latex_full_string) - 1]
|
|
|
|
|
return document_class(document_class_string), latex_full_string
|
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|
|
def read_begin_document(latex_full_string):
|
|
|
|
|
begin_document_index = latex_full_string.find(r"\begin{document}")
|
|
|
|
|
if begin_document_index == -1:
|
|
|
|
|
print("read_begin_document error! begin{document not found")
|
|
|
|
|
return "Error!", latex_full_string
|
|
|
|
|
begin_document_close_bracket = latex_full_string.find(
|
|
|
|
|
"}", begin_document_index)
|
|
|
|
|
begin_document_string = latex_full_string[begin_document_index:begin_document_close_bracket + 1]
|
|
|
|
|
latex_full_string = latex_full_string[begin_document_close_bracket + 1:len(
|
|
|
|
|
latex_full_string) - 1]
|
|
|
|
|
return_string = begin_document(begin_document_string)
|
|
|
|
|
return return_string, latex_full_string
|
|
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|
|
def read_start(html_string, data):
|
|
|
|
|
document_class_result, data = read_document_class(data)
|
|
|
|
|
if document_class_result == "Error!":
|
|
|
|
|
return "Error!", data
|
|
|
|
|
html_string += document_class_result
|
|
|
|
|
|
|
|
|
|
begin_document_results, data = read_begin_document(data)
|
|
|
|
|
if begin_document_results == "Error!":
|
|
|
|
|
return "Error!", data
|
|
|
|
|
html_string += begin_document_results
|
|
|
|
|
return html_string, data
|
|
|
|
|
|
|
|
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|
|
|
|
|
def handle_table_whole(html_string, data, table_start, table_end):
|
|
|
|
|
if table_start == -1 or table_end == -1:
|
|
|
|
|
return html_string, data
|
|
|
|
|
tabular_begin_string = r"\begin{tabular}"
|
|
|
|
|
tabular_end_string = r"\end{tabular}"
|
|
|
|
|
|
|
|
|
|
table_part = data[table_start:table_end+len(tabular_end_string)]
|
|
|
|
|
parameters_start_index = data.find(
|
|
|
|
|
"{", table_start + len(tabular_begin_string))
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parameters_end_index = data.find("}", parameters_start_index)
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parameters_string = data[parameters_start_index:parameters_end_index+1]
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parameters_array = tabular_required_parameters(parameters_string)
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inside_table = data[parameters_end_index+1:table_end]
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html_string += translate_inside_to_html(inside_table, parameters_array)
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return html_string
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def handle_insides(html_string, data):
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tabular_index = 0
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tabular_end_string = r"\end{tabular}"
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while tabular_index != -1:
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tabular_index_start = data.find(r"\begin{tabular}", 0)
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tabular_index_end = data.find(tabular_end_string, tabular_index_start)
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if tabular_index_start == -1 or tabular_index_end == -1:
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return html_string, data
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html_string += data[0:tabular_index_start]
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html_string = handle_table_whole(html_string, data,
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tabular_index_start, tabular_index_end)
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data = data[tabular_index_end + len(tabular_end_string):len(data)]
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tabular_index = tabular_index_end
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return html_string, data
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def main_function():
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tex_filename = "texfile.tex"
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data = read_file(tex_filename)
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html_string = ""
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html_string, data = read_start(html_string, data)
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if html_string == "Error!":
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print("main_function error! when reading documentclass or begin document")
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return "Error"
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|
html_string, data = handle_insides(html_string, data)
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return html_string
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if __name__ == "__main__":
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print(main_function())
|
