summaryrefslogtreecommitdiff
path: root/elpa/s-20210616.619/s.el
blob: 39c8d9e0e77fd6d219406958c40acf3d017a9b66 (plain)
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
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
;;; s.el --- The long lost Emacs string manipulation library.

;; Copyright (C) 2012-2015 Magnar Sveen

;; Author: Magnar Sveen <magnars@gmail.com>
;; Version: 1.12.0
;; Package-Version: 20210616.619
;; Package-Commit: 08661efb075d1c6b4fa812184c1e5e90c08795a9
;; Keywords: strings

;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.

;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with this program.  If not, see <http://www.gnu.org/licenses/>.

;;; Commentary:

;; The long lost Emacs string manipulation library.
;;
;; See documentation on https://github.com/magnars/s.el#functions

;;; Code:

;; Silence byte-compiler
(defvar ucs-normalize-combining-chars)  ; Defined in `ucs-normalize'
(autoload 'slot-value "eieio")

(defun s-trim-left (s)
  "Remove whitespace at the beginning of S."
  (declare (pure t) (side-effect-free t))
  (save-match-data
    (if (string-match "\\`[ \t\n\r]+" s)
        (replace-match "" t t s)
      s)))

(defun s-trim-right (s)
  "Remove whitespace at the end of S."
  (save-match-data
    (declare (pure t) (side-effect-free t))
    (if (string-match "[ \t\n\r]+\\'" s)
        (replace-match "" t t s)
      s)))

(defun s-trim (s)
  "Remove whitespace at the beginning and end of S."
  (declare (pure t) (side-effect-free t))
  (s-trim-left (s-trim-right s)))

(defun s-collapse-whitespace (s)
  "Convert all adjacent whitespace characters to a single space."
  (declare (pure t) (side-effect-free t))
  (replace-regexp-in-string "[ \t\n\r]+" " " s))

(defun s-split (separator s &optional omit-nulls)
  "Split S into substrings bounded by matches for regexp SEPARATOR.
If OMIT-NULLS is non-nil, zero-length substrings are omitted.

This is a simple wrapper around the built-in `split-string'."
  (declare (side-effect-free t))
  (save-match-data
    (split-string s separator omit-nulls)))

(defun s-split-up-to (separator s n &optional omit-nulls)
  "Split S up to N times into substrings bounded by matches for regexp SEPARATOR.

If OMIT-NULLS is non-nil, zero-length substrings are omitted.

See also `s-split'."
  (declare (side-effect-free t))
  (save-match-data
    (let ((op 0)
          (r nil))
      (with-temp-buffer
        (insert s)
        (setq op (goto-char (point-min)))
        (while (and (re-search-forward separator nil t)
                    (< 0 n))
          (let ((sub (buffer-substring op (match-beginning 0))))
            (unless (and omit-nulls
                         (equal sub ""))
              (push sub r)))
          (setq op (goto-char (match-end 0)))
          (setq n (1- n)))
        (let ((sub (buffer-substring op (point-max))))
          (unless (and omit-nulls
                       (equal sub ""))
            (push sub r))))
      (nreverse r))))

(defun s-lines (s)
  "Splits S into a list of strings on newline characters."
  (declare (pure t) (side-effect-free t))
  (s-split "\\(\r\n\\|[\n\r]\\)" s))

(defun s-join (separator strings)
  "Join all the strings in STRINGS with SEPARATOR in between."
  (declare (pure t) (side-effect-free t))
  (mapconcat 'identity strings separator))

(defun s-concat (&rest strings)
  "Join all the string arguments into one string."
  (declare (pure t) (side-effect-free t))
  (apply 'concat strings))

(defun s-prepend (prefix s)
  "Concatenate PREFIX and S."
  (declare (pure t) (side-effect-free t))
  (concat prefix s))

(defun s-append (suffix s)
  "Concatenate S and SUFFIX."
  (declare (pure t) (side-effect-free t))
  (concat s suffix))

(defun s-repeat (num s)
  "Make a string of S repeated NUM times."
  (declare (pure t) (side-effect-free t))
  (let (ss)
    (while (> num 0)
      (setq ss (cons s ss))
      (setq num (1- num)))
    (apply 'concat ss)))

(defun s-chop-suffix (suffix s)
  "Remove SUFFIX if it is at end of S."
  (declare (pure t) (side-effect-free t))
  (let ((pos (- (length suffix))))
    (if (and (>= (length s) (length suffix))
             (string= suffix (substring s pos)))
        (substring s 0 pos)
      s)))

(defun s-chop-suffixes (suffixes s)
  "Remove SUFFIXES one by one in order, if they are at the end of S."
  (declare (pure t) (side-effect-free t))
  (while suffixes
    (setq s (s-chop-suffix (car suffixes) s))
    (setq suffixes (cdr suffixes)))
  s)

(defun s-chop-prefix (prefix s)
  "Remove PREFIX if it is at the start of S."
  (declare (pure t) (side-effect-free t))
  (let ((pos (length prefix)))
    (if (and (>= (length s) (length prefix))
             (string= prefix (substring s 0 pos)))
        (substring s pos)
      s)))

(defun s-chop-prefixes (prefixes s)
  "Remove PREFIXES one by one in order, if they are at the start of S."
  (declare (pure t) (side-effect-free t))
  (while prefixes
    (setq s (s-chop-prefix (car prefixes) s))
    (setq prefixes (cdr prefixes)))
  s)

(defun s-shared-start (s1 s2)
  "Returns the longest prefix S1 and S2 have in common."
  (declare (pure t) (side-effect-free t))
  (let ((cmp (compare-strings s1 0 (length s1) s2 0 (length s2))))
    (if (eq cmp t) s1 (substring s1 0 (1- (abs cmp))))))

(defun s-shared-end (s1 s2)
  "Returns the longest suffix S1 and S2 have in common."
  (declare (pure t) (side-effect-free t))
  (let* ((l1 (length s1))
         (l2 (length s2))
         (search-length (min l1 l2))
         (i 0))
    (while (and (< i search-length)
                (= (aref s1 (- l1 i 1)) (aref s2 (- l2 i 1))))
      (setq i (1+ i)))
    ;; If I is 0, then it means that there's no common suffix between
    ;; S1 and S2.
    ;;
    ;; However, since (substring s (- 0)) will return the whole
    ;; string, `s-shared-end' should simply return the empty string
    ;; when I is 0.
    (if (zerop i)
        ""
      (substring s1 (- i)))))

(defun s-chomp (s)
  "Remove one trailing `\\n`, `\\r` or `\\r\\n` from S."
  (declare (pure t) (side-effect-free t))
  (s-chop-suffixes '("\n" "\r") s))

(defun s-truncate (len s &optional ellipsis)
  "If S is longer than LEN, cut it down and add ELLIPSIS to the end.

The resulting string, including ellipsis, will be LEN characters
long.

When not specified, ELLIPSIS defaults to ‘...’."
  (declare (pure t) (side-effect-free t))
  (unless ellipsis
    (setq ellipsis "..."))
  (if (> (length s) len)
      (format "%s%s" (substring s 0 (- len (length ellipsis))) ellipsis)
    s))

(defun s-word-wrap (len s)
  "If S is longer than LEN, wrap the words with newlines."
  (declare (side-effect-free t))
  (save-match-data
    (with-temp-buffer
      (insert s)
      (let ((fill-column len))
        (fill-region (point-min) (point-max)))
      (buffer-substring (point-min) (point-max)))))

(defun s-center (len s)
  "If S is shorter than LEN, pad it with spaces so it is centered."
  (declare (pure t) (side-effect-free t))
  (let ((extra (max 0 (- len (length s)))))
    (concat
     (make-string (ceiling extra 2) ? )
     s
     (make-string (floor extra 2) ? ))))

(defun s-pad-left (len padding s)
  "If S is shorter than LEN, pad it with PADDING on the left."
  (declare (pure t) (side-effect-free t))
  (let ((extra (max 0 (- len (length s)))))
    (concat (make-string extra (string-to-char padding))
            s)))

(defun s-pad-right (len padding s)
  "If S is shorter than LEN, pad it with PADDING on the right."
  (declare (pure t) (side-effect-free t))
  (let ((extra (max 0 (- len (length s)))))
    (concat s
            (make-string extra (string-to-char padding)))))

(defun s-left (len s)
  "Returns up to the LEN first chars of S."
  (declare (pure t) (side-effect-free t))
  (if (> (length s) len)
      (substring s 0 len)
    s))

(defun s-right (len s)
  "Returns up to the LEN last chars of S."
  (declare (pure t) (side-effect-free t))
  (let ((l (length s)))
    (if (> l len)
        (substring s (- l len) l)
      s)))

(defun s-ends-with? (suffix s &optional ignore-case)
  "Does S end with SUFFIX?

If IGNORE-CASE is non-nil, the comparison is done without paying
attention to case differences.

Alias: `s-suffix?'"
  (declare (pure t) (side-effect-free t))
  (let ((start-pos (- (length s) (length suffix))))
    (and (>= start-pos 0)
         (eq t (compare-strings suffix nil nil
                                s start-pos nil ignore-case)))))

(defun s-starts-with? (prefix s &optional ignore-case)
  "Does S start with PREFIX?

If IGNORE-CASE is non-nil, the comparison is done without paying
attention to case differences.

Alias: `s-prefix?'. This is a simple wrapper around the built-in
`string-prefix-p'."
  (declare (pure t) (side-effect-free t))
  (string-prefix-p prefix s ignore-case))

(defun s--truthy? (val)
  (declare (pure t) (side-effect-free t))
  (not (null val)))

(defun s-contains? (needle s &optional ignore-case)
  "Does S contain NEEDLE?

If IGNORE-CASE is non-nil, the comparison is done without paying
attention to case differences."
  (declare (pure t) (side-effect-free t))
  (let ((case-fold-search ignore-case))
    (s--truthy? (string-match-p (regexp-quote needle) s))))

(defun s-equals? (s1 s2)
  "Is S1 equal to S2?

This is a simple wrapper around the built-in `string-equal'."
  (declare (pure t) (side-effect-free t))
  (string-equal s1 s2))

(defun s-less? (s1 s2)
  "Is S1 less than S2?

This is a simple wrapper around the built-in `string-lessp'."
  (declare (pure t) (side-effect-free t))
  (string-lessp s1 s2))

(defun s-matches? (regexp s &optional start)
  "Does REGEXP match S?
If START is non-nil the search starts at that index.

This is a simple wrapper around the built-in `string-match-p'."
  (declare (side-effect-free t))
  (s--truthy? (string-match-p regexp s start)))

(defun s-blank? (s)
  "Is S nil or the empty string?"
  (declare (pure t) (side-effect-free t))
  (or (null s) (string= "" s)))

(defun s-blank-str? (s)
  "Is S nil or the empty string or string only contains whitespace?"
  (declare (pure t) (side-effect-free t))
  (or (s-blank? s) (s-blank? (s-trim s))))

(defun s-present? (s)
  "Is S anything but nil or the empty string?"
  (declare (pure t) (side-effect-free t))
  (not (s-blank? s)))

(defun s-presence (s)
  "Return S if it's `s-present?', otherwise return nil."
  (declare (pure t) (side-effect-free t))
  (and (s-present? s) s))

(defun s-lowercase? (s)
  "Are all the letters in S in lower case?"
  (declare (side-effect-free t))
  (let ((case-fold-search nil))
    (not (string-match-p "[[:upper:]]" s))))

(defun s-uppercase? (s)
  "Are all the letters in S in upper case?"
  (declare (side-effect-free t))
  (let ((case-fold-search nil))
    (not (string-match-p "[[:lower:]]" s))))

(defun s-mixedcase? (s)
  "Are there both lower case and upper case letters in S?"
  (let ((case-fold-search nil))
    (s--truthy?
     (and (string-match-p "[[:lower:]]" s)
          (string-match-p "[[:upper:]]" s)))))

(defun s-capitalized? (s)
  "In S, is the first letter upper case, and all other letters lower case?"
  (declare (side-effect-free t))
  (let ((case-fold-search nil))
    (s--truthy?
     (string-match-p "^[[:upper:]][^[:upper:]]*$" s))))

(defun s-numeric? (s)
  "Is S a number?"
  (declare (pure t) (side-effect-free t))
  (s--truthy?
   (string-match-p "^[0-9]+$" s)))

(defun s-replace (old new s)
  "Replaces OLD with NEW in S."
  (declare (pure t) (side-effect-free t))
  (replace-regexp-in-string (regexp-quote old) new s t t))

(defalias 's-replace-regexp 'replace-regexp-in-string)

(defun s--aget (alist key)
  (declare (pure t) (side-effect-free t))
  (cdr (assoc-string key alist)))

(defun s-replace-all (replacements s)
  "REPLACEMENTS is a list of cons-cells. Each `car` is replaced with `cdr` in S."
  (declare (pure t) (side-effect-free t))
  (replace-regexp-in-string (regexp-opt (mapcar 'car replacements))
                            (lambda (it) (s--aget replacements it))
                            s t t))

(defun s-downcase (s)
  "Convert S to lower case.

This is a simple wrapper around the built-in `downcase'."
  (declare (side-effect-free t))
  (downcase s))

(defun s-upcase (s)
  "Convert S to upper case.

This is a simple wrapper around the built-in `upcase'."
  (declare (side-effect-free t))
  (upcase s))

(defun s-capitalize (s)
  "Convert the first word's first character to upper case and the rest to lower case in S."
  (declare (side-effect-free t))
  (concat (upcase (substring s 0 1)) (downcase (substring s 1))))

(defun s-titleize (s)
  "Convert each word's first character to upper case and the rest to lower case in S.

This is a simple wrapper around the built-in `capitalize'."
  (declare (side-effect-free t))
  (capitalize s))

(defmacro s-with (s form &rest more)
  "Threads S through the forms. Inserts S as the last item
in the first form, making a list of it if it is not a list
already. If there are more forms, inserts the first form as the
last item in second form, etc."
  (declare (debug (form &rest [&or (function &rest form) fboundp])))
  (if (null more)
      (if (listp form)
          `(,(car form) ,@(cdr form) ,s)
        (list form s))
    `(s-with (s-with ,s ,form) ,@more)))

(put 's-with 'lisp-indent-function 1)

(defun s-index-of (needle s &optional ignore-case)
  "Returns first index of NEEDLE in S, or nil.

If IGNORE-CASE is non-nil, the comparison is done without paying
attention to case differences."
  (declare (pure t) (side-effect-free t))
  (let ((case-fold-search ignore-case))
    (string-match-p (regexp-quote needle) s)))

(defun s-reverse (s)
  "Return the reverse of S."
  (declare (pure t) (side-effect-free t))
  (save-match-data
    (if (multibyte-string-p s)
        (let ((input (string-to-list s))
              output)
          (require 'ucs-normalize)
          (while input
            ;; Handle entire grapheme cluster as a single unit
            (let ((grapheme (list (pop input))))
              (while (memql (car input) ucs-normalize-combining-chars)
                (push (pop input) grapheme))
              (setq output (nconc (nreverse grapheme) output))))
          (concat output))
      (concat (nreverse (string-to-list s))))))

(defun s-match-strings-all (regex string)
  "Return a list of matches for REGEX in STRING.

Each element itself is a list of matches, as per
`match-string'. Multiple matches at the same position will be
ignored after the first."
  (declare (side-effect-free t))
  (save-match-data
    (let ((all-strings ())
          (i 0))
      (while (and (< i (length string))
                  (string-match regex string i))
        (setq i (1+ (match-beginning 0)))
        (let (strings
              (num-matches (/ (length (match-data)) 2))
              (match 0))
          (while (/= match num-matches)
            (push (match-string match string) strings)
            (setq match (1+ match)))
          (push (nreverse strings) all-strings)))
      (nreverse all-strings))))

(defun s-matched-positions-all (regexp string &optional subexp-depth)
  "Return a list of matched positions for REGEXP in STRING.
SUBEXP-DEPTH is 0 by default."
  (declare (side-effect-free t))
  (if (null subexp-depth)
      (setq subexp-depth 0))
  (save-match-data
    (let ((pos 0) result)
      (while (and (string-match regexp string pos)
                  (< pos (length string)))
        (let ((m (match-end subexp-depth)))
          (push (cons (match-beginning subexp-depth) (match-end subexp-depth)) result)
          (setq pos (match-end 0))))
      (nreverse result))))

(defun s-match (regexp s &optional start)
  "When the given expression matches the string, this function returns a list
of the whole matching string and a string for each matched subexpressions.
If it did not match the returned value is an empty list (nil).

When START is non-nil the search will start at that index."
  (declare (side-effect-free t))
  (save-match-data
    (if (string-match regexp s start)
        (let ((match-data-list (match-data))
              result)
          (while match-data-list
            (let* ((beg (car match-data-list))
                   (end (cadr match-data-list))
                   (subs (if (and beg end) (substring s beg end) nil)))
              (setq result (cons subs result))
              (setq match-data-list
                    (cddr match-data-list))))
          (nreverse result)))))

(defun s-slice-at (regexp s)
  "Slices S up at every index matching REGEXP."
  (declare (side-effect-free t))
  (if (= 0 (length s)) (list "")
    (save-match-data
      (let (i)
        (setq i (string-match regexp s 1))
        (if i
            (cons (substring s 0 i)
                  (s-slice-at regexp (substring s i)))
          (list s))))))

(defun s-split-words (s)
  "Split S into list of words."
  (declare (side-effect-free t))
  (s-split
   "[^[:word:]0-9]+"
   (let ((case-fold-search nil))
     (replace-regexp-in-string
      "\\([[:lower:]]\\)\\([[:upper:]]\\)" "\\1 \\2"
      (replace-regexp-in-string "\\([[:upper:]]\\)\\([[:upper:]][0-9[:lower:]]\\)" "\\1 \\2" s)))
   t))

(defun s--mapcar-head (fn-head fn-rest list)
  "Like MAPCAR, but applies a different function to the first element."
  (if list
      (cons (funcall fn-head (car list)) (mapcar fn-rest (cdr list)))))

(defun s-lower-camel-case (s)
  "Convert S to lowerCamelCase."
  (declare (side-effect-free t))
  (s-join "" (s--mapcar-head 'downcase 'capitalize (s-split-words s))))

(defun s-upper-camel-case (s)
  "Convert S to UpperCamelCase."
  (declare (side-effect-free t))
  (s-join "" (mapcar 'capitalize (s-split-words s))))

(defun s-snake-case (s)
  "Convert S to snake_case."
  (declare (side-effect-free t))
  (s-join "_" (mapcar 'downcase (s-split-words s))))

(defun s-dashed-words (s)
  "Convert S to dashed-words."
  (declare (side-effect-free t))
  (s-join "-" (mapcar 'downcase (s-split-words s))))

(defun s-capitalized-words (s)
  "Convert S to Capitalized words."
  (declare (side-effect-free t))
  (let ((words (s-split-words s)))
    (s-join " " (cons (capitalize (car words)) (mapcar 'downcase (cdr words))))))

(defun s-titleized-words (s)
  "Convert S to Titleized Words."
  (declare (side-effect-free t))
  (s-join " " (mapcar 's-titleize (s-split-words s))))

(defun s-word-initials (s)
  "Convert S to its initials."
  (declare (side-effect-free t))
  (s-join "" (mapcar (lambda (ss) (substring ss 0 1))
                     (s-split-words s))))

;; Errors for s-format
(progn
  (put 's-format-resolve
       'error-conditions
       '(error s-format s-format-resolve))
  (put 's-format-resolve
       'error-message
       "Cannot resolve a template to values"))

(defun s-format (template replacer &optional extra)
  "Format TEMPLATE with the function REPLACER.

REPLACER takes an argument of the format variable and optionally
an extra argument which is the EXTRA value from the call to
`s-format'.

Several standard `s-format' helper functions are recognized and
adapted for this:

    (s-format \"${name}\" 'gethash hash-table)
    (s-format \"${name}\" 'aget alist)
    (s-format \"$0\" 'elt sequence)

The REPLACER function may be used to do any other kind of
transformation."
  (let ((saved-match-data (match-data)))
    (unwind-protect
        (replace-regexp-in-string
         "\\$\\({\\([^}]+\\)}\\|[0-9]+\\)"
         (lambda (md)
           (let ((var
                  (let ((m (match-string 2 md)))
                    (if m m
                      (string-to-number (match-string 1 md)))))
                 (replacer-match-data (match-data)))
             (unwind-protect
                 (let ((v
                        (cond
                         ((eq replacer 'gethash)
                          (funcall replacer var extra))
                         ((eq replacer 'aget)
                          (funcall 's--aget extra var))
                         ((eq replacer 'elt)
                          (funcall replacer extra var))
                         ((eq replacer 'oref)
                          (funcall #'slot-value extra (intern var)))
                         (t
                          (set-match-data saved-match-data)
                          (if extra
                              (funcall replacer var extra)
                            (funcall replacer var))))))
                   (if v (format "%s" v) (signal 's-format-resolve md)))
               (set-match-data replacer-match-data))))
         template
         ;; Need literal to make sure it works
         t t)
      (set-match-data saved-match-data))))

(defvar s-lex-value-as-lisp nil
  "If `t' interpolate lisp values as lisp.

`s-lex-format' inserts values with (format \"%S\").")

(defun s-lex-fmt|expand (fmt)
  "Expand FMT into lisp."
  (declare (side-effect-free t))
  (list 's-format fmt (quote 'aget)
        (append '(list)
                (mapcar
                 (lambda (matches)
                   (list
                    'cons
                    (cadr matches)
                    `(format
                      (if s-lex-value-as-lisp "%S" "%s")
                      ,(intern (cadr matches)))))
                 (s-match-strings-all "${\\([^}]+\\)}" fmt)))))

(defmacro s-lex-format (format-str)
  "`s-format` with the current environment.

FORMAT-STR may use the `s-format' variable reference to refer to
any variable:

 (let ((x 1))
   (s-lex-format \"x is: ${x}\"))

The values of the variables are interpolated with \"%s\" unless
the variable `s-lex-value-as-lisp' is `t' and then they are
interpolated with \"%S\"."
  (declare (debug (form)))
  (s-lex-fmt|expand format-str))

(defun s-count-matches (regexp s &optional start end)
  "Count occurrences of `regexp' in `s'.

`start', inclusive, and `end', exclusive, delimit the part of `s' to
match.  `start' and `end' are both indexed starting at 1; the initial
character in `s' is index 1.

This function starts looking for the next match from the end of the
previous match.  Hence, it ignores matches that overlap a previously
found match.  To count overlapping matches, use
`s-count-matches-all'."
  (declare (side-effect-free t))
  (save-match-data
    (with-temp-buffer
      (insert s)
      (goto-char (point-min))
      (count-matches regexp (or start 1) (or end (point-max))))))

(defun s-count-matches-all (regexp s &optional start end)
  "Count occurrences of `regexp' in `s'.

`start', inclusive, and `end', exclusive, delimit the part of `s' to
match.  `start' and `end' are both indexed starting at 1; the initial
character in `s' is index 1.

This function starts looking for the next match from the second
character of the previous match.  Hence, it counts matches that
overlap a previously found match.  To ignore matches that overlap a
previously found match, use `s-count-matches'."
  (declare (side-effect-free t))
  (let* ((anchored-regexp (format "^%s" regexp))
         (match-count 0)
         (i 0)
         (narrowed-s (substring s
                                (when start (1- start))
                                (when end (1- end)))))
    (save-match-data
      (while (< i (length narrowed-s))
        (when (s-matches? anchored-regexp (substring narrowed-s i))
          (setq match-count (1+ match-count)))
        (setq i (1+ i))))
    match-count))

(defun s-wrap (s prefix &optional suffix)
  "Wrap string S with PREFIX and optionally SUFFIX.

Return string S with PREFIX prepended.  If SUFFIX is present, it
is appended, otherwise PREFIX is used as both prefix and
suffix."
  (declare (pure t) (side-effect-free t))
  (concat prefix s (or suffix prefix)))


;;; Aliases

(defalias 's-blank-p 's-blank?)
(defalias 's-blank-str-p 's-blank-str?)
(defalias 's-capitalized-p 's-capitalized?)
(defalias 's-contains-p 's-contains?)
(defalias 's-ends-with-p 's-ends-with?)
(defalias 's-equals-p 's-equals?)
(defalias 's-less-p 's-less?)
(defalias 's-lowercase-p 's-lowercase?)
(defalias 's-matches-p 's-matches?)
(defalias 's-mixedcase-p 's-mixedcase?)
(defalias 's-numeric-p 's-numeric?)
(defalias 's-prefix-p 's-starts-with?)
(defalias 's-prefix? 's-starts-with?)
(defalias 's-present-p 's-present?)
(defalias 's-starts-with-p 's-starts-with?)
(defalias 's-suffix-p 's-ends-with?)
(defalias 's-suffix? 's-ends-with?)
(defalias 's-uppercase-p 's-uppercase?)


(provide 's)
;;; s.el ends here