Browse code
feat(emacs): add nicer json navigator
Edward authored on 24/12/2021 11:04:21Showing 1 changed files
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+;;; fwoar-json-navigator.el --- more functional utilities for emacs -*- lexical-binding: t; -*- |
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+ |
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+;; Copyright (C) 2020 Edward Langley |
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+ |
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+;; Author: Edward Langley <fwoar@elangley.org> |
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+;; Version: 0.0.1 |
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+;; Keywords: json,navigator |
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+;; URL: https://fwoar.co |
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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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+;;; Commentary: |
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+ |
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+;; simple attempts to navigate json |
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+ |
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+;;; Code: |
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+ |
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+(defvar-local fwoar/json-nav--data nil) |
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+(defvar-local fwoar/json-nav--path nil) |
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+ |
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+(defun fwoar/json--ensure-data () |
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+ (unless fwoar/json-nav--data |
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+ (save-excursion |
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+ (goto-char (point-min)) |
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+ (setq-local fwoar/json-nav--data (json-parse-buffer :null-object nil)))) |
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+ (values)) |
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+ |
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+(defun fwoar/json-nav--pierce-vectors (fun it) |
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+ (cl-typecase it |
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+ (vector (map 'vector |
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+ (lambda (next) |
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+ (fwoar/json-nav--pierce-vectors fun next)) |
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+ it)) |
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+ (t (funcall fun it)))) |
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+ |
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+(defun fwoar/json-nav--get-path (data path) |
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+ (cl-loop with cur = data for key in path |
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+ do |
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+ (setf cur |
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+ (cl-etypecase cur |
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+ (vector |
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+ (fwoar/json-nav--pierce-vectors (fwoar/key key) |
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+ cur)) |
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+ (hash-table |
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+ (funcall (fwoar/key key) |
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+ cur)) |
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+ (null ()))) |
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+ finally (return cur))) |
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+ |
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+(cl-defmacro fwoar/json-nav--with-collector ((c) &body body) |
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+ (declare (indent 1)) |
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+ (let ((v (gensym "v"))) |
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+ `(let ((,v ())) |
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+ (cl-flet ((,c (it) (push it ,v))) |
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+ ,@body |
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+ (nreverse ,v))))) |
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+ |
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+(defun fwoar/json-nav--get-keys () |
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+ (fwoar/json--ensure-data) |
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+ (let ((data (fwoar/json-nav--get-path fwoar/json-nav--data |
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+ (reverse fwoar/json-nav--path)))) |
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+ (sort (cl-etypecase data |
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+ (hash-table (hash-table-keys data)) |
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+ (vector (remove-duplicates (sort (fwoar/json-nav--with-collector (c) |
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+ (fwoar/json-nav--pierce-vectors |
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+ (lambda (next) |
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+ (when next |
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+ (map nil #'c |
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+ (hash-table-keys next)))) |
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+ data)) |
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+ 'string<) |
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+ :test 'equal))) |
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+ 'string<))) |
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+ |
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+(defun fwoar/dive (s) |
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+ (interactive (list (completing-read "key? " |
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+ (fwoar/json-nav--get-keys)))) |
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+ (fwoar/json--ensure-data) |
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+ (let* ((path (cons s fwoar/json-nav--path)) |
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+ (data fwoar/json-nav--data)) |
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+ (with-current-buffer (switch-to-buffer-other-window |
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+ (format "*test-buffer: %s*" |
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+ (s-join "/" (reverse path)))) |
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+ (json-mode) |
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+ (setq-local fwoar/json-nav--data data |
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+ fwoar/json-nav--path path) |
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+ (setf (buffer-string) |
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+ (json-serialize (fwoar/json-nav--get-path fwoar/json-nav--data |
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+ (reverse path)) |
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+ :null-object nil)) |
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+ (json-pretty-print-buffer) |
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+ (goto-char (point-min)))) |
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+ (goto-char (point-min))) |
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+ |
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+(defun fwoar/return () |
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+ (interactive) |
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+ (fwoar/json--ensure-data) |
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+ (let ((prev-buffer (format "*test-buffer: %s*" |
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+ (s-join "/" (reverse (cdr fwoar/json-nav--path)))))) |
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+ (kill-buffer) |
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+ (switch-to-buffer-other-window prev-buffer)) |
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+ (point-min)) |
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+ |
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+(provide 'fwoar-json-navigator) |
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+;;; fwoar-json-navigator.el ends here |