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105 lines
3.3 KiB
Python
105 lines
3.3 KiB
Python
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# -*- coding: utf-8 -*-
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# Copyright (C) 2016 Adrien Vergé
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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"""
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Use this rule to control the position and formatting of comments.
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.. rubric:: Options
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* Use ``require-starting-space`` to require a space character right after the
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``#``. Set to ``true`` to enable, ``false`` to disable.
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* Use ``ignore-shebangs`` to ignore a
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`shebang <https://en.wikipedia.org/wiki/Shebang_(Unix)>`_ at the beginning of
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the file when ``require-starting-space`` is set.
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* ``min-spaces-from-content`` is used to visually separate inline comments from
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content. It defines the minimal required number of spaces between a comment
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and its preceding content.
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.. rubric:: Examples
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#. With ``comments: {require-starting-space: true}``
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the following code snippet would **PASS**:
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::
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# This sentence
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# is a block comment
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the following code snippet would **PASS**:
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::
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##############################
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## This is some documentation
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the following code snippet would **FAIL**:
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::
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#This sentence
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#is a block comment
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#. With ``comments: {min-spaces-from-content: 2}``
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the following code snippet would **PASS**:
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::
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x = 2 ^ 127 - 1 # Mersenne prime number
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the following code snippet would **FAIL**:
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::
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x = 2 ^ 127 - 1 # Mersenne prime number
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"""
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import re
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from yamllint.linter import LintProblem
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ID = 'comments'
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TYPE = 'comment'
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CONF = {'require-starting-space': bool,
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'ignore-shebangs': bool,
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'min-spaces-from-content': int}
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DEFAULT = {'require-starting-space': True,
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'ignore-shebangs': True,
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'min-spaces-from-content': 2}
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def check(conf, comment):
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if (conf['min-spaces-from-content'] != -1 and comment.is_inline() and
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comment.pointer - comment.token_before.end_mark.pointer <
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conf['min-spaces-from-content']):
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yield LintProblem(comment.line_no, comment.column_no,
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'too few spaces before comment')
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if conf['require-starting-space']:
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text_start = comment.pointer + 1
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while (comment.buffer[text_start] == '#' and
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text_start < len(comment.buffer)):
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text_start += 1
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if text_start < len(comment.buffer):
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if (conf['ignore-shebangs'] and
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comment.line_no == 1 and
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comment.column_no == 1 and
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re.match(r'^!\S', comment.buffer[text_start:])):
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return
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elif comment.buffer[text_start] not in (' ', '\n', '\0'):
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column = comment.column_no + text_start - comment.pointer
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yield LintProblem(comment.line_no,
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column,
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'missing starting space in comment')
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