204 lines
7.3 KiB
Python
204 lines
7.3 KiB
Python
#!/usr/bin/env python3
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# This file is a part of toml++ and is subject to the the terms of the MIT license.
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# Copyright (c) 2019-2020 Mark Gillard <mark.gillard@outlook.com.au>
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# See https://github.com/marzer/tomlplusplus/blob/master/LICENSE for the full license text.
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# SPDX-License-Identifier: MIT
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import sys
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import re
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import os
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import os.path as path
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import traceback
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def get_script_folder():
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return path.dirname(path.realpath(sys.argv[0]))
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def read_all_text_from_file(path):
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print("Reading {}".format(path))
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with open(path, 'r', encoding='utf-8') as file:
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text = file.read()
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return text
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def make_divider(text = None, text_col = 40):
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if (text is None):
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return "//" + ('-' * 118)
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else:
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text = "//{} {} ".format('-' * (text_col - 2),text);
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if (len(text) < 120):
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return text + ('-' * (120 - len(text)))
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else:
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return text
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class Preprocessor:
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def __init__(self):
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pass
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def preprocess(self, match):
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raw_incl = match if isinstance(match, str) else match.group(1)
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incl = raw_incl.strip().lower()
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if incl in self.processed_includes:
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return ''
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self.processed_includes.append(incl)
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text = read_all_text_from_file(path.join(get_script_folder(), '..', 'include', 'toml++', incl))
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text = re.sub(r'//[#!]\s*[{][{].*?//[#!]\s*[}][}]', '', text, 0, re.I | re.S)
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self.current_level += 1
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text = re.sub(r'^\s*#\s*include\s+"(.+?)"', lambda m : self.preprocess(m), text, 0, re.I | re.M)
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self.current_level -= 1
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if (self.current_level == 1):
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header_text = '↓ ' + raw_incl
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lpad = 28 + ((25 * (self.header_indent % 4)) - int((len(header_text) + 4) / 2))
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self.header_indent += 1
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text = '{}\n#pragma region {}\n\n{}\n\n#pragma endregion {}\n{}'.format(
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make_divider(header_text, lpad), '', text, '', make_divider('↑ ' + raw_incl, lpad)
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)
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return '\n\n' + text + '\n\n' # will get merged later
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def __call__(self, file):
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self.processed_includes = []
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self.header_indent = 0
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self.current_level = 0
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return self.preprocess(file)
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def main():
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# preprocess header(s)
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source_text = Preprocessor()('toml.h')
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source_text = re.sub('\r\n', '\n', source_text, 0, re.I | re.M) # convert windows newlines
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source_text = re.sub(r'^\s*#\s*pragma\s+once\s*$', '', source_text, 0, re.I | re.M) # 'pragma once'
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source_text = re.sub(r'^\s*//\s*clang-format\s+.+?$', '', source_text, 0, re.I | re.M) # clang-format directives
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source_text = re.sub(r'^\s*//\s*SPDX-License-Identifier:.+?$', '', source_text, 0, re.I | re.M) # spdx
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source_text = re.sub('(?:(?:\n|^)[ \t]*//[/#!<]+[^\n]*)+\n', '\n', source_text, 0, re.I | re.M) # remove 'magic' comment blocks
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source_text = re.sub('(?://[/#!<].*?)\n', '\n', source_text, 0, re.I | re.M) # remove 'magic' comments
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source_text = re.sub('([^ \t])[ \t]+\n', '\\1\n', source_text, 0, re.I | re.M) # remove trailing whitespace
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source_text = re.sub('\n(?:[ \t]*\n[ \t]*)+\n', '\n\n', source_text, 0, re.I | re.M) # remove double newlines
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source_text = re.sub( # blank lines between various preprocessor directives
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'[#](endif(?:\s*//[^\n]*)?)\n{2,}[#]((?:end)?ifn?(?:def)?|define)',
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'#\\1\n#\\2',
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source_text, 0, re.I | re.M
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)
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return_type_pattern \
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= r'(?:' \
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+ r'(?:\[\[nodiscard\]\]\s*)?' \
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+ r'(?:(?:friend|explicit|virtual|inline|const|operator)\s+)*' \
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+ r'(?:' \
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+ r'bool|int64_t|(?:const_)?iterator|double|void' \
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+ r'|node(?:_(?:view|of)<.+?>|)?|table|array|value(?:<.+?>)?' \
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+ r'|T|U|parse_(?:error|result)' \
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+ r')' \
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+ r'(?:\s*[&*]+)?' \
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+ r'(?:\s*[(]\s*[)])?' \
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+ r'\s+' \
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+ r')'
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blank_lines_between_returns_pattern = '({}[^\n]+)\n\n([ \t]*{})'.format(return_type_pattern, return_type_pattern)
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for i in range(0, 5): # remove blank lines between simple one-liner definitions
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source_text = re.sub('(using .+?;)\n\n([ \t]*using)', '\\1\n\\2', source_text, 0, re.I | re.M)
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source_text = re.sub(
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'([a-zA-Z_][a-zA-Z0-9_]*[ \t]+[a-zA-Z_][a-zA-Z0-9_]*[ \t]*;)' \
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+ '\n\n([ \t]*[a-zA-Z_][a-zA-Z0-9_]*[ \t]+[a-zA-Z_][a-zA-Z0-9_]*[ \t]*;)', '\\1\n\\2',
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source_text, 0, re.I | re.M)
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source_text = re.sub(blank_lines_between_returns_pattern, '\\1\n\\2', source_text, 0, re.I | re.M)
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source_text = source_text.strip()
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# extract library version
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library_version = {
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'major': 0,
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'minor': 0,
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'patch': 0
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}
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match = re.search(r'^\s*#\s*define\s+TOML_LIB_MAJOR\s+([0-9]+)\s*$', source_text, re.I | re.M)
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if match is not None:
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library_version['major'] = match.group(1)
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match = re.search(r'^\s*#\s*define\s+TOML_LIB_MINOR\s+([0-9]+)\s*$', source_text, re.I | re.M)
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if match is not None:
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library_version['minor'] = match.group(1)
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match = re.search(r'^\s*#\s*define\s+TOML_LIB_(?:REVISION|PATCH)\s+([0-9]+)\s*$', source_text, re.I | re.M)
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if match is not None:
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library_version['patch'] = match.group(1)
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# build the preamble (license etc)
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preamble = []
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preamble.append('''
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toml++ v{major}.{minor}.{patch}
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https://github.com/marzer/tomlplusplus
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SPDX-License-Identifier: MIT'''.format(**library_version))
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preamble.append('''
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- THIS FILE WAS ASSEMBLED FROM MULTIPLE HEADER FILES BY A SCRIPT - PLEASE DON'T EDIT IT DIRECTLY -
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If you wish to submit a contribution to toml++, hooray and thanks! Before you crack on, please be aware that this
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file was assembled from a number of smaller files by a python script, and code contributions should not be made
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against it directly. You should instead make your changes in the relevant source file(s). The file names of the files
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that contributed to this header can be found at the beginnings and ends of the corresponding sections of this file.''')
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preamble.append('''
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TOML language specifications:
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Latest: https://github.com/toml-lang/toml/blob/master/README.md
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v1.0.0-rc.1: https://github.com/toml-lang/toml/blob/master/versions/en/toml-v1.0.0-rc.1.md
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v0.5.0: https://github.com/toml-lang/toml/blob/master/versions/en/toml-v0.5.0.md''')
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preamble.append(read_all_text_from_file(path.join(get_script_folder(), '..', 'LICENSE')))
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# write the output file
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output_file_path = path.join(get_script_folder(), '..', 'toml.hpp')
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print("Writing to {}".format(output_file_path))
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with open(output_file_path,'w', encoding='utf-8', newline='\n') as output_file:
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if (len(preamble) > 0):
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print(make_divider(), file=output_file)
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for pre in preamble:
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print('//', file=output_file)
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for line in pre.strip().splitlines():
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print('//', file=output_file, end = '')
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if (len(line) > 0):
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print(' ', file=output_file, end = '')
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print(line, file=output_file)
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else:
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print('\n', file=output_file, end = '')
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print('//', file=output_file)
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print(make_divider(), file=output_file)
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print('''// clang-format off
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#ifndef INCLUDE_TOMLPLUSPLUS_H
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#define INCLUDE_TOMLPLUSPLUS_H
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#ifdef __GNUC__
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wunknown-pragmas"
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#endif
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#define TOML_LIB_SINGLE_HEADER 1
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''', file=output_file)
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print(source_text, file=output_file)
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print('''
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#ifdef __GNUC__
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#pragma GCC diagnostic pop
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#endif
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#endif // INCLUDE_TOMLPLUSPLUS_H
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// clang-format on''', file=output_file)
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if __name__ == '__main__':
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try:
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main()
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except Exception as err:
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print(
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'Fatal error: [{}] {}'.format(
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type(err).__name__,
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str(err)
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),
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file=sys.stderr
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)
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traceback.print_exc(file=sys.stderr)
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sys.exit(1)
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sys.exit()
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