95 lines
3.5 KiB
EmacsLisp
95 lines
3.5 KiB
EmacsLisp
;;; flycheck-swagger-tools --- Flycheck checker for swagger-tools.
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;; Copyright (C) 2017 Marc-André Goyette
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;; Author: Marc-André Goyette <goyette.marcandre@gmail.com>
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;; URL: https://github.com/magoyette/flycheck-swagger-tools
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;; Version: 0.1.0
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;; Package-Requires: ((emacs "25"))
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;; Keywords: swagger
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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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;; 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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;; For a full copy of the GNU General Public License
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;; see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;; flycheck-swagger-tools provides a Flycheck checker for swagger-tools.
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;; This allows to validate Swagger YAML and JSON files.
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;; The checker can be activating by requiring this package.
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;; (require 'flycheck-swagger-tools)
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;; By default, only the first 4000 characters of a file are scanned to
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;; find the swagger 2.0 element. To avoid stack overflow in Emacs
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;; multi-line regex, this value is necessary. The defcustom
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;; swagger-tools-predicate-regexp-match-limit can be used to change this
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;; limit. That could be necessary for YAML files with long initial comments.
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;;; Code:
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(require 'flycheck)
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(defgroup swagger-tools nil
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"Validate swagger files with swagger-tools."
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:group 'swagger
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:prefix "swagger-tools-")
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(defcustom swagger-tools-predicate-regexp-match-limit 4000
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"Defines the number of characters that will be scanned at the beginning of a
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buffer to find the swagger 2.0 element."
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:type 'integer
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:group 'swagger-tools)
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;;;###autoload
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(flycheck-define-checker swagger-tools
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"A checker that uses swagger tools to validate Swagger2 JSON and YAML files.
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See URL `https://github.com/apigee-127/swagger-tools'."
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:command ("swagger-tools" "validate" source)
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:predicate
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(lambda ()
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(string-match
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"\\(.\\|\n\\)*\\([[:space:]]\\|\"\\|\\'\\)*swagger\\([[:space:]]\\|\"\\|\\'\\)*:[[:space:]]*[\"\\']2.0[\"\\'].*"
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;; Need to avoid stack overflow for multi-line regex
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(buffer-substring 1 (min (buffer-size)
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swagger-tools-predicate-regexp-match-limit))))
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:error-patterns
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((warning line-start " " (message (one-or-more not-newline)
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"is not used"
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(one-or-more not-newline))
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line-end)
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;; js-yaml error with position
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(error line-start " error: " (message) " at line " line ", column " column ":" line-end)
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;; js-yaml error without position
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(error line-start " error: " (message) ": " (one-or-more not-newline) line-end)
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;; swagger-tools error (always contain a # symbol in the message)
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(error line-start
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" "
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(message (optional (one-or-more not-newline))
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(one-or-more "#")
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(one-or-more not-newline))
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line-end))
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:error-filter
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;; Add line number 1 if the error has no line number
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(lambda (errors)
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(let ((errors (flycheck-sanitize-errors errors)))
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(dolist (err errors)
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(unless (flycheck-error-line err)
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(setf (flycheck-error-line err) 1)))
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errors))
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:modes (json-mode openapi-yaml-mode yaml-mode))
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(add-to-list 'flycheck-checkers 'swagger-tools)
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(provide 'flycheck-swagger-tools)
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;;; flycheck-swagger-tools.el ends here
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