;;; my-log-mode.el --- major mode for error logs

;;; Commentary:

;;

;;; Code:

(defun my-log-goto (point)

  "Visit file according to error specification at POINT."

  (interactive "d")

  (let ( start stop line fname fline (fregex "^\\([^:]+\\):\\([[:digit:]]+\\):") )

    (save-excursion

      (move-beginning-of-line 1)

      (setq start (point))

      (move-end-of-line 1)

      (setq stop (point))

      (setq line (filter-buffer-substring start stop))

      (string-match fregex line)

      (setq fname (match-string 1 line))

      (when fname

        (setq fline (string-to-number (match-string 2 line))))

      )

    (cond

     ( (and fname (file-exists-p fname))

       (find-file-other-window fname)

       (goto-char (point-min))

       (forward-line (1- fline)) )

     ( t

       (if fname

           (message "File '%s' is not found (default directory is '%s')." fname default-directory)

         (message "No file under current line.") ) )

     )

    ))

(defvar my-log-mode-map (make-sparse-keymap))

(define-key my-log-mode-map (kbd "RET") 'my-log-goto)

(require 'generic-x)

;;;###autoload

(define-generic-mode

  'my-log-mode

  nil

  nil

  '(

    ("^\\([^:]+\\):\\([[:digit:]]+\\):[^

]+$" (1 font-lock-function-name-face) (2 font-lock-type-face))

    ("^\\([^:]\\{1,10\\}\\):[^

]+$" (1 font-lock-keyword-face))

    )

  ;; '("\\.log$")

  nil

  (list

   (lambda nil

     (use-local-map my-log-mode-map)

     (modify-syntax-entry ?' ".")

     (modify-syntax-entry ?\" ".")

     ))

  )

;;; my-log-mode.el ends here