1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
|
;;; json-reformat.el --- Reformatting tool for JSON
;; Author: Wataru MIYAGUNI <gonngo@gmail.com>
;; URL: https://github.com/gongo/json-reformat
;; Package-Version: 20160212.53
;; Version: 0.0.6
;; Keywords: json
;; Copyright (c) 2012 Wataru MIYAGUNI
;;
;; MIT License
;;
;; Permission is hereby granted, free of charge, to any person obtaining
;; a copy of this software and associated documentation files (the
;; "Software"), to deal in the Software without restriction, including
;; without limitation the rights to use, copy, modify, merge, publish,
;; distribute, sublicense, and/or sell copies of the Software, and to
;; permit persons to whom the Software is furnished to do so, subject to
;; the following conditions:
;;
;; The above copyright notice and this permission notice shall be
;; included in all copies or substantial portions of the Software.
;;
;; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
;; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
;; MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
;; NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
;; LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
;; OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
;; WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
;;; Commentary:
;; json-reformat.el is a reformatting tool for JSON (http://json.org/).
;;
;; ## Usage
;;
;; 1. Specify region
;; 2. Call 'M-x json-reformat-region'
;;
;; ## Customize
;;
;; - `json-reformat:indent-width'
;; - `json-reformat:pretty-string?'
;;
;;; Code:
(require 'json)
(eval-when-compile (require 'cl))
(unless (require 'subr-x nil t)
;; built-in subr-x from 24.4
(defsubst hash-table-keys (hash-table)
"Return a list of keys in HASH-TABLE."
(let ((keys '()))
(maphash (lambda (k _v) (push k keys)) hash-table)
keys)))
(put 'json-reformat-error 'error-message "JSON Reformat error")
(put 'json-reformat-error 'error-conditions '(json-reformat-error error))
(defconst json-reformat:special-chars-as-pretty-string
'((?\" . ?\")
(?\\ . ?\\)))
(defcustom json-reformat:indent-width 4
"How much indentation `json-reformat-region' should do at each level."
:type 'integer
:safe #'integerp
:group 'json-reformat)
(defcustom json-reformat:pretty-string? nil
"Whether to decode the string.
Example:
{\"name\":\"foobar\",\"nick\":\"foo \\u00e4 bar\",\"description\":\"<pre>\\nbaz\\n</pre>\"}
If nil:
{
\"name\": \"foobar\",
\"nick\": \"foo \\u00e4 bar\",
\"description\": \"<pre>\\nbaz\\n<\\/pre>\"
}
Else t:
{
\"name\": \"foobar\",
\"nick\": \"foo ä bar\",
\"description\": \"<pre>
baz
</pre>\"
}"
:type 'boolean
:safe #'booleanp
:group 'json-reformat)
(defun json-reformat:indent (level)
(make-string (* level json-reformat:indent-width) ? ))
(defun json-reformat:number-to-string (val)
(number-to-string val))
(defun json-reformat:symbol-to-string (val)
(cond ((equal 't val) "true")
((equal json-false val) "false")
(t (symbol-name val))))
(defun json-reformat:encode-char-as-pretty (char)
(setq char (encode-char char 'ucs))
(let ((special-char (car (rassoc char json-reformat:special-chars-as-pretty-string))))
(if special-char
(format "\\%c" special-char)
(format "%c" char))))
(defun json-reformat:string-to-string (val)
(if json-reformat:pretty-string?
(format "\"%s\"" (mapconcat 'json-reformat:encode-char-as-pretty val ""))
(json-encode-string val)))
(defun json-reformat:vector-to-string (val level)
(if (= (length val) 0) "[]"
(concat "[\n"
(mapconcat
'identity
(loop for v across val
collect (concat
(json-reformat:indent (1+ level))
(json-reformat:print-node v (1+ level))
))
(concat ",\n"))
"\n" (json-reformat:indent level) "]"
)))
(defun json-reformat:print-node (val level)
(cond ((hash-table-p val) (json-reformat:tree-to-string (json-reformat:tree-sibling-to-plist val) level))
((numberp val) (json-reformat:number-to-string val))
((vectorp val) (json-reformat:vector-to-string val level))
((null val) "null")
((symbolp val) (json-reformat:symbol-to-string val))
(t (json-reformat:string-to-string val))))
(defun json-reformat:tree-sibling-to-plist (root)
(let (pl)
(dolist (key (reverse (hash-table-keys root)) pl)
(setq pl (plist-put pl key (gethash key root))))))
(defun json-reformat:tree-to-string (root level)
(concat "{\n"
(let (key val str)
(while root
(setq key (car root)
val (cadr root)
root (cddr root))
(setq str
(concat str (json-reformat:indent (1+ level))
"\"" key "\""
": "
(json-reformat:print-node val (1+ level))
(when root ",")
"\n"
)))
str)
(json-reformat:indent level)
"}"))
(defun json-reformat-from-string (string)
(with-temp-buffer
(insert string)
(goto-char (point-min))
(condition-case errvar
(let ((json-key-type 'string)
(json-object-type 'hash-table)
json-tree)
(setq json-tree (json-read))
(json-reformat:print-node json-tree 0))
(json-error
(signal 'json-reformat-error
(list (error-message-string errvar)
(line-number-at-pos (point))
(point)))))))
;;;###autoload
(defun json-reformat-region (begin end)
"Reformat the JSON in the specified region.
If you want to customize the reformat style,
please see the documentation of `json-reformat:indent-width'
and `json-reformat:pretty-string?'."
(interactive "*r")
(let ((start-line (line-number-at-pos begin))
(start-pos begin))
(save-excursion
(save-restriction
(narrow-to-region begin end)
(goto-char (point-min))
(let (reformatted)
(condition-case errvar
(progn
(setq reformatted
(json-reformat-from-string
(buffer-substring-no-properties (point-min) (point-max))))
(delete-region (point-min) (point-max))
(insert reformatted))
(json-reformat-error
(let ((reason (nth 1 errvar))
(line (nth 2 errvar))
(position (nth 3 errvar)))
(message
"JSON parse error [Reason] %s [Position] In buffer, line %d (char %d)"
reason
(+ start-line line -1)
(+ start-pos position -1))))))))))
(provide 'json-reformat)
;;; json-reformat.el ends here
|
