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Newer
100644
1650 lines (1476 sloc)
51.7 KB
1
;(function($B){
2
4
5
var $ObjectDict = object.$dict
6
7
var $StringDict = {__class__:$B.$type,
9
__name__:'str',
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$native:true
11
}
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$StringDict.__add__ = function(self,other){
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if(!(typeof other==="string")){
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try{return getattr(other,'__radd__')(self)}
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catch(err){throw _b_.TypeError(
17
"Can't convert "+$B.get_class(other).__name__+" to str implicitely")}
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}
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return self+other
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}
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22
$StringDict.__contains__ = function(self,item){
23
if(!(typeof item==="string")){throw _b_.TypeError(
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"'in <string>' requires string as left operand, not "+item.__class__)}
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var nbcar = item.length
26
if(nbcar==0) return true // a string contains the empty string
27
if(self.length==0) return nbcar==0
29
if(self.substr(i,nbcar)==item) return true
30
}
31
return false
32
}
33
34
$StringDict.__delitem__ = function(){
35
throw _b_.TypeError("'str' object doesn't support item deletion")
36
}
37
38
// __dir__must be assigned explicitely because attribute resolution for builtin
39
// classes doesn't use __mro__
40
$StringDict.__dir__ = $ObjectDict.__dir__
41
42
$StringDict.__eq__ = function(self,other){
43
if(other===undefined){ // compare object "self" to class "str"
44
return self===str
45
}
46
if (_b_.isinstance(other, _b_.str)) {
47
return other.valueOf() == self.valueOf()
48
}
49
return other===self.valueOf()
50
}
51
52
function preformat(self, fmt){
53
if(fmt.empty){return _b_.str(self)}
54
if(fmt.type && fmt.type!='s'){
55
throw _b_.ValueError("Unknown format code '"+fmt.type+
56
"' for object of type 'str'")
57
}
58
return self
59
}
60
61
$StringDict.__format__ = function(self, format_spec) {
62
var fmt = new $B.parse_format_spec(format_spec)
63
// For strings, alignment default to left
64
fmt.align = fmt.align || '<'
65
return $B.format_width(preformat(self, fmt), fmt)
66
}
67
68
$StringDict.__getitem__ = function(self,arg){
69
if(isinstance(arg,_b_.int)){
70
var pos = arg
71
if(arg<0) pos+=self.length
72
if(pos>=0 && pos<self.length) return self.charAt(pos)
73
throw _b_.IndexError('string index out of range')
74
}
75
if(isinstance(arg,slice)) {
76
var step = arg.step===None ? 1 : arg.step
77
if(step>0){
78
var start = arg.start===None ? 0 : arg.start
79
var stop = arg.stop===None ? getattr(self,'__len__')() : arg.stop
80
}else{
81
var start = arg.start===None ? getattr(self,'__len__')()-1 : arg.start
83
}
84
if(start<0) start+=self.length
86
var res = '',i=null
87
if(step>0){
88
if(stop<=start) return ''
89
for(var i=start;i<stop;i+=step) res += self.charAt(i)
90
} else {
91
if(stop>=start) return ''
93
}
94
return res
95
}
96
if(isinstance(arg,bool)) return self.__getitem__(_b_.int(arg))
98
}
99
100
$StringDict.__hash__ = function(self) {
101
if (self === undefined) {
102
return $StringDict.__hashvalue__ || $B.$py_next_hash-- // for hash of string type (not instance of string)
103
}
104
105
//http://stackoverflow.com/questions/2909106/python-whats-a-correct-and-good-way-to-implement-hash
106
// this implementation for strings maybe good enough for us..
107
108
var hash=1;
110
hash=(101*hash + self.charCodeAt(i)) & 0xFFFFFFFF
111
}
112
113
return hash
114
}
115
116
$StringDict.__init__ = function(self,arg){
117
self.valueOf = function(){return arg}
118
self.toString = function(){return arg}
120
}
121
122
var $str_iterator = $B.$iterator_class('str_iterator')
123
$StringDict.__iter__ = function(self){
124
var items = self.split('') // list of all characters in string
125
return $B.$iterator(items,$str_iterator)
126
}
127
128
$StringDict.__len__ = function(self){return self.length}
129
132
var kwarg_key = new RegExp('([^\\)]*)\\)')
133
134
var NotANumber = function() {
135
this.name = 'NotANumber'
136
}
137
138
var number_check=function(s) {
139
if(!isinstance(s,[_b_.int,_b_.float])){
140
throw new NotANumber()
141
}
142
}
143
144
var get_char_array = function(size, char) {
145
if (size <= 0)
146
return ''
147
return new Array(size + 1).join(char)
148
}
149
150
var format_padding = function(s, flags, minus_one) {
151
var padding = flags.padding
152
if (!padding) { // undefined
153
return s
154
}
155
s = s.toString()
156
padding = parseInt(padding, 10)
157
if (minus_one) { // numeric formatting where sign goes in front of padding
158
padding -= 1
159
}
160
if (!flags.left) {
161
return get_char_array(padding - s.length, flags.pad_char) + s
162
} else {
163
// left adjusted
164
return s + get_char_array(padding - s.length, flags.pad_char)
165
}
166
}
167
168
var format_int_precision = function(val, flags) {
169
var precision = flags.precision
170
if (!precision) {
171
return val.toString()
172
}
173
precision = parseInt(precision, 10)
174
var s
175
if (val.__class__ === $B.LongInt.$dict) {
176
s=$B.LongInt.$dict.to_base(val, 10)
177
} else {
178
s=val.toString()
179
}
180
var sign = s[0]
181
if (s[0] === '-') {
182
return '-' + get_char_array(precision - s.length + 1, '0') + s.slice(1)
183
}
184
return get_char_array(precision - s.length, '0') + s
185
}
186
187
var format_float_precision = function(val, upper, flags, modifier) {
188
var precision = flags.precision
189
// val is a float
190
if (isFinite(val)) {
191
val = modifier(val, precision, flags, upper)
192
return val
193
}
194
if (val === Infinity) {
195
val = 'inf'
196
} else if (val === -Infinity) {
197
val = '-inf'
198
} else {
199
val = 'nan'
200
}
201
if (upper) {
202
return val.toUpperCase()
203
}
204
return val
205
206
}
207
208
var format_sign = function(val, flags) {
209
if (flags.sign) {
210
if (val >= 0) {
211
return "+"
212
}
213
} else if (flags.space) {
214
if (val >= 0) {
215
return " "
216
}
217
}
218
return ""
219
}
220
221
var str_format = function(val, flags) {
222
// string format supports left and right padding
223
flags.pad_char = " " // even if 0 padding is defined, don't use it
224
return format_padding(str(val), flags)
225
}
226
229
if (val.__class__ === $B.LongInt.$dict) {
230
val = $B.LongInt.$dict.to_base(val, 10)
231
} else {
232
val = parseInt(val)
233
}
234
235
var s = format_int_precision(val, flags)
236
if (flags.pad_char === '0') {
237
if (val < 0) {
238
s = s.substring(1)
239
return '-' + format_padding(s, flags, true)
240
}
241
var sign = format_sign(val, flags)
242
if (sign !== '') {
243
return sign + format_padding(s, flags, true)
244
}
245
}
246
247
return format_padding(format_sign(val, flags) + s, flags)
248
}
249
250
var repr_format = function(val, flags) {
251
flags.pad_char = " " // even if 0 padding is defined, don't use it
252
return format_padding(repr(val), flags)
253
}
254
255
var ascii_format = function(val, flags) {
256
flags.pad_char = " " // even if 0 padding is defined, don't use it
257
return format_padding(ascii(val), flags)
258
}
259
260
// converts to val to float and sets precision if missing
261
var _float_helper = function(val, flags) {
262
number_check(val)
263
if (!flags.precision) {
264
if (!flags.decimal_point) {
265
flags.precision = 6
266
} else {
267
flags.precision = 0
268
}
269
} else {
270
flags.precision = parseInt(flags.precision, 10)
271
validate_precision(flags.precision)
272
}
273
return parseFloat(val)
274
}
275
276
// used to capture and remove trailing zeroes
277
var trailing_zeros = /(.*?)(0+)([eE].*)/
278
var leading_zeros = /\.(0*)/
279
var trailing_dot = /\.$/
280
281
var validate_precision = function(precision) {
282
// force precision to limits of javascript
283
if (precision > 20) {
284
throw _b_.ValueError("precision too big")
285
}
286
}
287
288
// gG
289
var floating_point_format = function(val, upper, flags) {
290
val = _float_helper(val, flags)
291
var v = val.toString()
292
var v_len = v.length
293
var dot_idx = v.indexOf('.')
294
if (dot_idx < 0) {
295
dot_idx = v_len
296
}
297
if (val < 1 && val > -1) {
298
var zeros = leading_zeros.exec(v)
299
var numzeros
300
if (zeros) {
301
numzeros = zeros[1].length
302
} else {
303
numzeros = 0
304
}
305
if (numzeros >= 4) {
306
val = format_sign(val, flags) + format_float_precision(val, upper, flags, _floating_g_exp_helper)
307
if (!flags.alternate) {
308
var trl = trailing_zeros.exec(val)
309
if (trl) {
310
val = trl[1].replace(trailing_dot, '') + trl[3] // remove trailing
316
}
317
return format_padding(val, flags)
318
}
319
flags.precision += numzeros
320
return format_padding(format_sign(val, flags) + format_float_precision(val, upper, flags,
321
function(val, precision) {
322
val = val.toFixed(min(precision, v_len - dot_idx) + numzeros)
323
}), flags)
324
}
325
326
if (dot_idx > flags.precision) {
327
val = format_sign(val, flags) + format_float_precision(val, upper, flags, _floating_g_exp_helper)
328
if (!flags.alternate) {
329
var trl = trailing_zeros.exec(val)
330
if (trl) {
331
val = trl[1].replace(trailing_dot, '') + trl[3] // remove trailing
332
}
333
} else {
334
if (flags.precision <= 1) {
335
val = val[0] + '.' + val.substring(1)
336
}
337
}
338
return format_padding(val, flags)
339
}
340
return format_padding(format_sign(val, flags) + format_float_precision(val, upper, flags,
341
function(val, precision) {
342
if (!flags.decimal_point) {
343
precision = min(v_len - 1, 6)
344
} else if (precision > v_len) {
345
if (!flags.alternate) {
346
precision = v_len
347
}
348
}
349
if (precision < dot_idx) {
350
precision = dot_idx
351
}
352
return val.toFixed(precision - dot_idx)
353
}), flags)
354
}
355
356
var _floating_g_exp_helper = function(val, precision, flags, upper) {
357
if (precision) {
358
--precision
359
}
360
val = val.toExponential(precision)
361
// pad exponent to two digits
362
var e_idx = val.lastIndexOf('e')
363
if (e_idx > val.length - 4) {
364
val = val.substring(0, e_idx + 2) + '0' + val.substring(e_idx + 2)
365
}
366
if (upper) {
367
return val.toUpperCase()
368
}
369
return val
370
}
371
372
// fF
373
var floating_point_decimal_format = function(val, upper, flags) {
374
val = _float_helper(val, flags)
375
return format_padding(format_sign(val, flags) + format_float_precision(val, upper, flags,
376
function(val, precision, flags) {
377
val = val.toFixed(precision)
378
if (precision === 0 && flags.alternate) {
379
val += '.'
380
}
381
return val
382
}), flags)
383
}
384
385
var _floating_exp_helper = function(val, precision, flags, upper) {
386
val = val.toExponential(precision)
387
// pad exponent to two digits
388
var e_idx = val.lastIndexOf('e')
389
if (e_idx > val.length - 4) {
390
val = val.substring(0, e_idx + 2) + '0' + val.substring(e_idx + 2)
391
}
392
if (upper) {
393
return val.toUpperCase()
394
}
395
return val
396
}
397
398
// eE
399
var floating_point_exponential_format = function(val, upper, flags) {
400
val = _float_helper(val, flags)
401
402
return format_padding(format_sign(val, flags) + format_float_precision(val, upper, flags, _floating_exp_helper), flags)
403
}
404
405
var signed_hex_format = function(val, upper, flags) {
408
409
if (val.__class__ === $B.LongInt.$dict) {
410
ret=$B.LongInt.$dict.to_base(val, 16)
411
} else {
412
ret = parseInt(val)
413
ret = ret.toString(16)
414
}
415
ret = format_int_precision(ret, flags)
416
if (upper) {
417
ret = ret.toUpperCase()
418
}
419
if (flags.pad_char === '0') {
420
if (val < 0) {
421
ret = ret.substring(1)
422
ret = '-' + format_padding(ret, flags, true)
423
}
424
var sign = format_sign(val, flags)
425
if (sign !== '') {
426
ret = sign + format_padding(ret, flags, true)
427
}
428
}
429
430
if (flags.alternate) {
431
if (ret.charAt(0) === '-') {
432
if (upper) {
433
ret = "-0X" + ret.slice(1)
434
} else {
435
ret = "-0x" + ret.slice(1)
436
}
437
} else {
438
if (upper) {
439
ret = "0X" + ret
440
} else {
441
ret = "0x" + ret
442
}
443
}
444
}
445
return format_padding(format_sign(val, flags) + ret, flags)
446
}
447
450
var ret
451
452
if (val.__class__ === $B.LongInt.$dict) {
453
ret = $B.LongInt.$dict.to_base(8)
454
} else {
455
ret = parseInt(val)
456
ret = ret.toString(8)
457
}
458
460
461
if (flags.pad_char === '0') {
462
if (val < 0) {
463
ret = ret.substring(1)
464
ret = '-' + format_padding(ret, flags, true)
465
}
466
var sign = format_sign(val, flags)
467
if (sign !== '') {
468
ret = sign + format_padding(ret, flags, true)
469
}
470
}
471
472
if (flags.alternate) {
473
if (ret.charAt(0) === '-') {
474
ret = "-0o" + ret.slice(1)
475
} else {
476
ret = "0o" + ret
477
}
478
}
479
return format_padding(ret, flags)
480
}
481
482
var single_char_format = function(val, flags) {
483
if(isinstance(val,str) && val.length==1) return val
484
try {
485
val = _b_.int(val) // yes, floats are valid (they are cast to int)
486
} catch (err) {
487
throw _b_.TypeError('%c requires int or char')
488
}
489
return format_padding(chr(val), flags)
490
}
491
492
var num_flag = function(c, flags) {
493
if (c === '0' && !flags.padding && !flags.decimal_point && !flags.left) {
494
flags.pad_char = '0'
495
return
496
}
497
if (!flags.decimal_point) {
498
flags.padding = (flags.padding || "") + c
499
} else {
500
flags.precision = (flags.precision || "") + c
501
}
502
}
503
504
var decimal_point_flag = function(val, flags) {
505
if (flags.decimal_point) {
506
// can only have one decimal point
507
throw new UnsupportedChar()
508
}
509
flags.decimal_point = true
510
}
511
512
var neg_flag = function(val, flags) {
513
flags.pad_char = ' ' // overrides '0' flag
514
flags.left = true
515
}
516
517
var space_flag = function(val, flags) {
518
flags.space = true
519
}
520
521
var sign_flag = function(val, flags) {
522
flags.sign = true
523
}
524
525
var alternate_flag = function(val, flags) {
526
flags.alternate = true
527
}
528
530
's': str_format,
531
'd': num_format,
532
'i': num_format,
533
'u': num_format,
534
'o': octal_format,
535
'r': repr_format,
536
'a': ascii_format,
537
'g': function(val, flags) {return floating_point_format(val, false, flags)},
538
'G': function(val, flags) {return floating_point_format(val, true, flags)},
539
'f': function(val, flags) {return floating_point_decimal_format(val, false, flags)},
540
'F': function(val, flags) {return floating_point_decimal_format(val, true, flags)},
541
'e': function(val, flags) {return floating_point_exponential_format(val, false, flags)},
542
'E': function(val, flags) {return floating_point_exponential_format(val, true, flags)},
543
'x': function(val, flags) {return signed_hex_format(val, false, flags)},
544
'X': function(val, flags) {return signed_hex_format(val, true, flags)},
545
'c': single_char_format,
546
'0': function(val, flags) {return num_flag('0', flags)},
547
'1': function(val, flags) {return num_flag('1', flags)},
548
'2': function(val, flags) {return num_flag('2', flags)},
549
'3': function(val, flags) {return num_flag('3', flags)},
550
'4': function(val, flags) {return num_flag('4', flags)},
551
'5': function(val, flags) {return num_flag('5', flags)},
552
'6': function(val, flags) {return num_flag('6', flags)},
553
'7': function(val, flags) {return num_flag('7', flags)},
554
'8': function(val, flags) {return num_flag('8', flags)},
555
'9': function(val, flags) {return num_flag('9', flags)},
556
'-': neg_flag,
557
' ': space_flag,
558
'+': sign_flag,
559
'.': decimal_point_flag,
560
'#': alternate_flag
561
}
562
563
// exception thrown when an unsupported char is encountered in legacy format
564
var UnsupportedChar = function() {
565
this.name = "UnsupportedChar"
566
}
567
579
++pos
580
var rslt = kwarg_key.exec(s.substring(newpos))
581
if (!rslt) {
582
throw _b_.ValueError("incomplete format key")
583
}
584
var key = rslt[1]
585
newpos += rslt[0].length
586
try {
588
} catch(err) {
589
if (err.name === "KeyError") {
590
throw err
591
}
592
throw _b_.TypeError("format requires a mapping")
593
}
608
}
609
catch(err) {
610
if (err.name === "IndexError") {
611
throw _b_.TypeError("not enough arguments for format string")
612
} else {
613
throw err
614
}
615
}
616
}
620
// todo: get flags, type
621
// todo: string value based on flags, type, value
622
var flags = {'pad_char': ' '}
623
do {
630
if (ret !== undefined) {
631
return ret
632
}
633
++newpos
634
}
635
} catch (err) {
636
if (err.name === "UnsupportedChar") {
637
invalid_char = s[newpos]
638
if (invalid_char === undefined) {
639
throw _b_.ValueError("incomplete format")
640
}
641
throw _b_.ValueError("unsupported format character '" + invalid_char +
642
"' (0x" + invalid_char.charCodeAt(0).toString(16) + ") at index " + newpos)
643
} else if (err.name === "NotANumber") {
644
var try_char = s[newpos]
651
}
652
} else {
653
cls = cls.__name__
654
}
655
throw _b_.TypeError("%" + try_char + " format: a number is required, not " + cls)
656
} else {
657
throw err
658
}
659
}
661
}
680
}
681
}
682
} else {
683
// % at end of string
684
throw _b_.ValueError("incomplete format")
685
}
686
pos = newpos + 1
687
} while (pos < length)
688
691
692
$StringDict.__mro__ = [$StringDict,$ObjectDict]
693
694
$StringDict.__mul__ = function(self,other){
695
if(!isinstance(other,_b_.int)){throw _b_.TypeError(
696
"Can't multiply sequence by non-int of type '"+
697
$B.get_class(other).__name__+"'")}
698
$res = ''
699
for(var i=0;i<other;i++){$res+=self.valueOf()}
700
return $res
701
}
702
703
$StringDict.__ne__ = function(self,other){return other!==self.valueOf()}
704
705
$StringDict.__repr__ = function(self){
706
var res = self.replace(/\n/g,'\\\\n')
707
// escape the escape char
708
res = res.replace(/\\/g, '\\\\')
709
if(res.search('"')==-1 && res.search("'")==-1){
710
return "'"+res+"'"
714
var qesc = new RegExp("'","g") // to escape single quote
716
return res
717
}
718
719
$StringDict.__setattr__ = function(self,attr,value){return setattr(self,attr,value)}
720
721
$StringDict.__setitem__ = function(self,attr,value){
722
throw _b_.TypeError("'str' object does not support item assignment")
723
}
724
$StringDict.__str__ = function(self){
725
if(self===undefined) return "<class 'str'>"
726
return self.toString()
727
}
728
$StringDict.toString = function(){return 'string!'}
729
730
// generate comparison methods
731
var $comp_func = function(self,other){
732
if(typeof other !=="string"){throw _b_.TypeError(
733
"unorderable types: 'str' > "+$B.get_class(other).__name__+"()")}
734
return self > other
735
}
736
$comp_func += '' // source code
737
var $comps = {'>':'gt','>=':'ge','<':'lt','<=':'le'}
738
for(var $op in $comps){
739
eval("$StringDict.__"+$comps[$op]+'__ = '+$comp_func.replace(/>/gm,$op))
740
}
741
742
// add "reflected" methods
743
$B.make_rmethods($StringDict)
744
745
// unsupported operations
746
var $notimplemented = function(self,other){
747
throw NotImplementedError("OPERATOR not implemented for class str")
748
}
749
750
$StringDict.capitalize = function(self){
751
if(self.length==0) return ''
752
return self.charAt(0).toUpperCase()+self.substr(1).toLowerCase()
753
}
754
755
$StringDict.casefold = function(self) {
756
throw _b_.NotImplementedError("function casefold not implemented yet");
757
}
758
759
$StringDict.center = function(self,width,fillchar){
760
if(fillchar===undefined){fillchar=' '}else{fillchar=fillchar}
761
if(width<=self.length) return self
762
763
var pad = parseInt((width-self.length)/2)
764
var res = Array(pad+1).join(fillchar) // is this statement faster than the for loop below?
765
res += self + res
766
if(res.length<width){res += fillchar}
767
return res
768
}
769
770
$StringDict.count = function(){
771
var $ = $B.args('count', 4, {self:null, sub:null, start:null, stop:null},
776
var substr = $.self
777
if($.start!==null){
778
var _slice
779
if($.stop!==null){_slice = _b_.slice($.start, $.stop)}
780
else{_slice = _b_.slice($.start,$.self.length)}
781
substr = $StringDict.__getitem__.apply(null, [$.self].concat(_slice))
782
}else{
783
if($.self.length+$.sub.length==0){return 1} // ''.count('') = 1
784
}
785
if($.sub.length==0){
786
if($.start==$.self.length){return 1} // 'aaa'.count('',3) = 1
787
else if(substr.length==0){return 0} // 'aaa'.count('',4) = 0
788
return substr.length+1
789
}
790
var n=0, pos=0
791
while(pos<substr.length){
792
pos=substr.indexOf($.sub,pos)
794
}
795
return n
796
}
797
798
$StringDict.encode = function(self, encoding) {
799
if (encoding === undefined) encoding='utf-8'
800
if(encoding=='rot13' || encoding=='rot_13'){
801
// Special case : returns a string
802
var res = ''
803
for(var i=0, _len = self.length; i<_len ; i++){
804
var char = self.charAt(i)
805
if(('a'<=char && char<='m') || ('A'<=char && char<='M')){
806
res += String.fromCharCode(String.charCodeAt(char)+13)
807
}else if(('m'<char && char<='z') || ('M'<char && char<='Z')){
808
res += String.fromCharCode(String.charCodeAt(char)-13)
809
}else{res += char}
810
}
811
return res
812
}
814
}
815
816
$StringDict.endswith = function(self){
817
// Return True if the string ends with the specified suffix, otherwise
818
// return False. suffix can also be a tuple of suffixes to look for.
819
// With optional start, test beginning at that position. With optional
820
// end, stop comparing at that position.
822
{self:null, suffix:null, start:null, end:null},
823
['self', 'suffix', 'start', 'end'],
824
arguments,{start:0, end:self.length-1},null,null)
825
var suffixes = $ns['suffix']
826
if(!isinstance(suffixes,_b_.tuple)){suffixes=[suffixes]}
829
var s = self.substr(start,end+1)
831
suffix = suffixes[i]
832
if(suffix.length<=s.length &&
833
s.substr(s.length-suffix.length)==suffix) return true
834
}
835
return false
836
}
837
838
$StringDict.expandtabs = function(self, tabsize) {
839
var $ = $B.args('expandtabs', 2, {self:null, tabsize:null},
840
['self', 'tabsize'], arguments, {tabsize:8}, null, null)
841
var s=$B.$GetInt($.tabsize), col=0,pos=0,res=''
842
if(s==1){return self.replace(/\t/g,' ')}
843
while(pos<self.length){
844
var car = self.charAt(pos)
845
switch(car){
846
case '\t':
847
while(col%s > 0){res += ' ';col++}
848
break
849
case '\r':
850
case '\n':
851
res += car
852
col = 0
853
break
854
default:
855
res += car
856
col++
857
break
858
}
859
pos++
860
}
861
862
return res
863
}
864
866
// Return the lowest index in the string where substring sub is found,
867
// such that sub is contained in the slice s[start:end]. Optional
868
// arguments start and end are interpreted as in slice notation.
869
// Return -1 if sub is not found.
873
arguments,{start:0,end:null},null,null)
874
if(!isinstance($.sub,str)){throw _b_.TypeError(
875
"Can't convert '"+$B.get_class($.sub).__name__+
876
"' object to str implicitly")}
877
if($.start===_b_.None){$.start=0}
878
if($.end===null || $.end===_b_.None){$.end=$.self.length}
879
if(!isinstance($.start,_b_.int)||!isinstance($.end,_b_.int)){
880
throw _b_.TypeError(
881
"slice indices must be integers or None or have an __index__ method")}
882
var s = $.self.substring($.start,$.end)
883
884
if($.sub.length==0 && $.start==$.self.length){return $.self.length}
885
if(s.length+$.sub.length==0){return -1}
886
887
var last_search = s.length-$.sub.length
888
for(var i=0;i<=last_search;i++){
889
if(s.substr(i, $.sub.length)==$.sub){return $.start+i}
890
}
892
}
893
897
898
// Parse a "format string", as described in the Python documentation
899
// Return a format object. For the format string
900
// a.x[z]!r:...
901
// the object has attributes :
902
// - name : "a"
903
// - name_ext : [".x", "[z]"]
904
// - conv : r
905
// - spec : rest of string after :
906
907
var elts = fmt_string.split(':'), name, conv, spec, name_ext=[]
908
if(elts.length==1){
909
// No : in the string : it only contains a name
910
name = fmt_string
911
}else{
912
// name is before the first ":"
913
// spec (the format specification) is after
914
name = elts[0]
915
spec = elts.splice(1).join(':')
916
}
917
918
var elts = name.split('!')
919
if(elts.length>1){
920
name=elts[0]
921
conv=elts[1] // conversion flag
922
if(conv.length!==1 || 'ras'.search(conv)==-1){
923
throw _b_.ValueError('wrong conversion flag '+conv)
924
}
925
}
926
927
if(name!==undefined){
928
// "name' may be a subscription or attribute
929
// Put these "extensions" in the list "name_ext"
930
function name_repl(match){
931
name_ext.push(match)
932
return ''
933
}
934
var name_ext_re = /\.[_a-zA-Z][_a-zA-Z0-9]*|\[[_a-zA-Z][_a-zA-Z0-9]*\]|\[[0-9]+\]/g
935
name = name.replace(name_ext_re, name_repl)
936
}
937
941
943
945
arguments, {}, 'args', 'kw')
946
947
// Parse self to detect formatting instructions
948
// Create a list "parts" made of sections of the string :
949
// - elements of even rank are literal text
950
// - elements of odd rank are "format objects", built from the
951
// format strings in self (of the form {...})
952
var pos=0, _len=self.length, car, text='', parts=[], rank=0, defaults={}
953
954
while(pos<_len){
955
car = self.charAt(pos)
956
if(car=='{' && self.charAt(pos+1)=='{'){
957
// replace {{ by literal {
958
text += '{'
959
pos+=2
960
}else if(car=='}' && self.charAt(pos+1)=='}'){
961
// replace }} by literal }
962
text += '}'
963
pos+=2
964
}else if(car=='{'){
965
// Start of a format string
966
967
// Store current literal text
968
parts.push(text)
969
970
// Search the end of the format string, ie the } closing the
971
// opening {. Since the string can contain other pairs {} for
972
// nested formatting, an integer nb is incremented for each { and
973
// decremented for each } ; the end of the format string is
974
// reached when nb==0
975
var end = pos+1, nb=1
976
while(end<_len){
977
if(self.charAt(end)=='{'){nb++;end++}
978
else if(self.charAt(end)=='}'){
979
nb--;end++
980
if(nb==0){
981
// End of format string
982
var fmt_string = self.substring(pos+1, end-1)
983
984
// Create a format object, by function parse_format
985
var fmt_obj = parse_format(fmt_string)
986
987
// If no name is explicitely provided, use the rank
988
if(!fmt_obj.name){
989
fmt_obj.name=rank+''
990
rank++
991
}
992
994
// "spec" may contain "nested replacement fields"
995
// In this case, evaluate them using the keyword
996
// arguments passed to format()
997
function replace_nested(name, key){
1000
}
1001
fmt_obj.spec = fmt_obj.spec.replace(/\{(.+?)\}/g,
1002
replace_nested)
1003
}
1004
1005
// Store format object in list "parts"
1006
parts.push(fmt_obj)
1007
text = ''
1008
break
1009
}
1010
}else{end++}
1011
}
1012
if(nb>0){throw ValueError("wrong format "+self)}
1013
pos = end
1014
}else{text += car;pos++}
1015
}
1017
1018
// Apply formatting to the values passed to format()
1019
var res = '', fmt
1020
for(var i=0;i<parts.length;i++){
1021
// Literal text is added unchanged
1022
if(typeof parts[i]=='string'){res += parts[i];continue}
1023
1024
// Format objects
1025
fmt = parts[i]
1026
if(fmt.name.charAt(0).search(/\d/)>-1){
1027
// Numerical reference : use positional arguments
1028
var pos = parseInt(fmt.name),
1029
value = _b_.tuple.$dict.__getitem__($.args, pos)
1030
}else{
1031
// Use keyword arguments
1032
var value = _b_.dict.$dict.__getitem__($.kw, fmt.name)
1033
}
1034
// If name has extensions (attributes or subscriptions)
1035
for(var j=0;j<fmt.name_ext.length;j++){
1036
var ext = fmt.name_ext[j]
1037
if(ext.charAt(0)=='.'){
1038
// Attribute
1039
value = _b_.getattr(value, ext.substr(1))
1040
}else{
1041
// Subscription
1042
var key = ext.substr(1, ext.length-2)
1043
// An index made of digits is transformed into an integer
1044
if(key.charAt(0).search(/\d/)>-1){key = parseInt(key)}
1045
value = _b_.getattr(value, '__getitem__')(key)
1046
}
1047
}
1048
// If the conversion flag is set, first call a function to convert
1049
// the value
1050
if(fmt.conv=='a'){value = _b_.ascii(value)}
1051
else if(fmt.conv=='r'){value = _b_.repr(value)}
1052
else if(fmt.conv=='s'){value = _b_.str(value)}
1053
1054
// Call attribute __format__ to perform the actual formatting
1055
res += _b_.getattr(value, '__format__')(fmt.spec)
1056
}
1058
}
1059
1060
$StringDict.format_map = function(self) {
1061
throw NotImplementedError("function format_map not implemented yet");
1062
}
1063
1064
$StringDict.index = function(self){
1065
// Like find(), but raise ValueError when the substring is not found.
1066
var res = $StringDict.find.apply(self,arguments)
1067
if(res===-1) throw _b_.ValueError("substring not found")
1068
return res
1069
}
1070
1071
$StringDict.isalnum = function(self) {return /^[a-z0-9]+$/i.test(self)}
1072
1073
$StringDict.isalpha = function(self) {return /^[a-z]+$/i.test(self)}
1074
1075
$StringDict.isdecimal = function(self) {
1076
// this is not 100% correct
1077
return /^[0-9]+$/.test(self)
1078
}
1079
1080
$StringDict.isdigit = function(self) { return /^[0-9]+$/.test(self)}
1081
1082
$StringDict.isidentifier = function(self) {
1083
1084
switch(self) {
1085
case 'False':
1086
case 'None':
1087
case 'True':
1088
case 'and':
1089
case 'as':
1090
case 'assert':
1091
case 'break':
1092
case 'class':
1093
case 'continue':
1094
case 'def':
1095
case 'del':
1096
case 'elif':
1097
case 'else':
1098
case 'except':
1099
case 'finally':
1100
case 'for':
1101
case 'from':
1102
case 'global':
1103
case 'if':
1104
case 'import':
1105
case 'in':
1106
case 'is':
1107
case 'lambda':
1108
case 'nonlocal':
1109
case 'not':
1110
case 'or':
1111
case 'pass':
1112
case 'raise':
1113
case 'return':
1114
case 'try':
1115
case 'while':
1116
case 'with':
1117
case 'yield':
1118
return true
1119
}
1120
1121
// fixme.. this isn't complete but should be a good start
1122
return /^[a-z][0-9a-z_]+$/i.test(self)
1123
}
1124
1126
1127
// not sure how to handle unicode variables
1128
$StringDict.isnumeric = function(self) {return /^[0-9]+$/.test(self)}
1129
1130
// inspired by http://www.codingforums.com/archive/index.php/t-17925.html
1131
$StringDict.isprintable = function(self) {return !/[^ -~]/.test(self)}
1132
1133
$StringDict.isspace = function(self) {return /^\s+$/i.test(self)}
1134
1135
$StringDict.istitle = function(self) {return /^([A-Z][a-z]+)(\s[A-Z][a-z]+)$/i.test(self)}
1136
1138
1139
$StringDict.join = function(self,obj){
1140
var iterable=iter(obj)
1141
var res = '',count=0
1142
while(1){
1143
try{
1144
var obj2 = next(iterable)
1145
if(!isinstance(obj2,str)){throw _b_.TypeError(
1146
"sequence item "+count+": expected str instance, "+$B.get_class(obj2).__name__+" found")}
1147
res += obj2+self
1148
count++
1149
}catch(err){
1151
else{throw err}
1152
}
1153
}
1154
if(count==0) return ''
1155
return res.substr(0,res.length-self.length)
1156
}
1157
1158
$StringDict.ljust = function(self, width, fillchar) {
1159
if (width <= self.length) return self
1160
if (fillchar === undefined) fillchar=' '
1161
return self + Array(width - self.length + 1).join(fillchar)
1162
}
1163
1164
$StringDict.lower = function(self){return self.toLowerCase()}
1165
1166
$StringDict.lstrip = function(self,x){
1167
var pattern = null
1168
if(x==undefined){pattern="\\s*"}
1169
else{pattern = "["+x+"]*"}
1170
var sp = new RegExp("^"+pattern)
1171
return self.replace(sp,"")
1172
}
1173
1174
// note, maketrans should be a static function.
1175
$StringDict.maketrans = function(from, to) {
1176
var _t=[]
1177
// make 'default' translate table
1178
for(var i=0; i < 256; i++) _t[i]=String.fromCharCode(i)
1179
1180
// make substitution in the translation table
1182
var _ndx=from.source[i].charCodeAt(0) //retrieve ascii code of char
1183
_t[_ndx]=to.source[i]
1184
}
1185
1186
// create a data structure that string.translate understands
1188
for(var i=0; i < 256; i++) {
1190
}
1191
return _d
1192
}
1193
1194
$StringDict.partition = function(self,sep) {
1195
if (sep === undefined) {
1196
throw Error("sep argument is required");
1197
return
1198
}
1199
var i=self.indexOf(sep)
1200
if (i== -1) return _b_.tuple([self, '', ''])
1201
return _b_.tuple([self.substring(0,i), sep, self.substring(i+sep.length)])
1202
}
1203
1204
function $re_escape(str)
1205
{
1206
var specials = "[.*+?|()$^"
1208
var re = new RegExp('\\'+specials.charAt(i),'g')
1209
str = str.replace(re, "\\"+specials.charAt(i))
1210
}
1211
return str
1212
}
1213
1214
$StringDict.replace = function(self, old, _new, count) {
1215
// Replaces occurrences of 'old' by '_new'. Count references
1216
// the number of times to replace. In CPython, negative or undefined
1217
// values of count means replace all.
1218
if (count === undefined) {
1219
count = -1;
1220
} else {
1221
// Validate instance type of 'count'
1222
if (!isinstance(count,[_b_.int,_b_.float])) {
1223
throw _b_.TypeError("'" + str(count.__class__) + "' object cannot be interpreted as an integer");
1224
} else if (isinstance(count, _b_.float)) {
1225
throw _b_.TypeError("integer argument expected, got float");
1226
}
1227
}
1228
1229
var res = self.valueOf();
1230
var pos = -1;
1231
if (count < 0) count = res.length;
1232
while (count > 0) {
1233
pos = res.indexOf(old, pos);
1234
if (pos < 0)
1235
break;
1236
res = res.substr(0, pos) + _new + res.substr(pos + old.length);
1237
pos = pos + _new.length;
1238
count--;
1239
}
1240
return res;
1241
}
1242
1243
$StringDict.rfind = function(self){
1244
// Return the highest index in the string where substring sub is found,
1245
// such that sub is contained within s[start:end]. Optional arguments
1246
// start and end are interpreted as in slice notation. Return -1 on failure.
1248
{self:null, sub:null, start:null, end:null},
1249
['self', 'sub', 'start', 'end'],
1250
arguments,{start:0, end:self.length},null,null)
1251
for(var attr in $ns){eval('var '+attr+'=$ns[attr]')}
1252
if(!isinstance(sub,str)){throw _b_.TypeError(
1253
"Can't convert '"+sub.__class__.__name__+"' object to str implicitly")}
1254
if(!isinstance(start,_b_.int)||!isinstance(end,_b_.int)){throw _b_.TypeError(
1255
"slice indices must be integers or None or have an __index__ method")}
1256
1257
var s = self.substring(start,end)
1258
1259
// why not use lastIndexOf, which passes all brython tests..?
1260
return self.lastIndexOf(sub)
1261
}
1262
1263
$StringDict.rindex = function(){
1264
// Like rfind() but raises ValueError when the substring sub is not found
1265
var res = $StringDict.rfind.apply(this,arguments)
1266
if(res==-1){throw _b_.ValueError("substring not found")}
1267
return res
1268
}
1269
1270
$StringDict.rjust = function(self) {
1272
{self:null, width:null, fillchar:null},
1273
['self', 'width', 'fillchar'],
1274
arguments,{fillchar:' '},null,null)
1275
for(var attr in $ns){eval('var '+attr+'=$ns[attr]')}
1276
1277
if (width <= self.length) return self
1278
1279
return Array(width - self.length + 1).join(fillchar) + self
1280
}
1281
1282
$StringDict.rpartition = function(self,sep) {
1283
if (sep === undefined) {
1284
throw Error("sep argument is required");
1285
return
1286
}
1287
var pos=self.length-sep.length
1288
while(1){
1289
if(self.substr(pos,sep.length)==sep){
1290
return _b_.tuple([self.substr(0,pos),sep,self.substr(pos+sep.length)])
1291
}else{
1292
pos--
1293
if(pos<0){return _b_.tuple(['','',self])}
1294
}
1295
}
1296
}
1297
1298
$StringDict.rsplit = function(self) {
1299
var args = [], pos=0
1300
for(var i=1,_len_i=arguments.length;i<_len_i;i++){args[pos++]=arguments[i]}
1302
var sep=None,maxsplit=-1
1303
if($ns['args'].length>=1){sep=$ns['args'][0]}
1304
if($ns['args'].length==2){maxsplit=$ns['args'][1]}
1306
1308
1310
1311
if (array.length <= maxsplit || maxsplit == -1) return array
1312
1313
var s=[]
1314
1315
s = array.splice(array.length - maxsplit, array.length)
1316
s.splice(0, 0, array.join(sep))
1317
1318
return s
1319
}
1320
1321
$StringDict.rstrip = function(self,x){
1322
if(x==undefined){var pattern="\\s*"}
1323
else{var pattern = "["+x+"]*"}
1324
sp = new RegExp(pattern+'$')
1325
return str(self.replace(sp,""))
1326
}
1327
1328
$StringDict.split = function(self){
1329
var args = [], pos=0
1330
for(var i=1,_len_i=arguments.length;i<_len_i;i++){args[pos++]=arguments[i]}
1332
var sep=None,maxsplit=-1
1333
if($ns['args'].length>=1){sep=$ns['args'][0]}
1334
if($ns['args'].length==2){maxsplit=$ns['args'][1]}
1335
maxsplit = _b_.dict.$dict.get($ns['kw'],'maxsplit',maxsplit)
1337
if(sep===None){
1338
var res = []
1339
var pos = 0
1340
while(pos<self.length&&self.charAt(pos).search(/\s/)>-1){pos++}
1342
var name = ''
1343
while(1){
1344
if(self.charAt(pos).search(/\s/)===-1){
1345
if(name===''){name=self.charAt(pos)}
1346
else{name+=self.charAt(pos)}
1347
}else{
1348
if(name!==''){
1349
res.push(name)
1350
if(maxsplit!==-1&&res.length===maxsplit+1){
1351
res.pop()
1352
res.push(name+self.substr(pos))
1353
return res
1354
}
1355
name=''
1356
}
1357
}
1358
pos++
1359
if(pos>self.length-1){
1360
if(name){res.push(name)}
1361
break
1362
}
1363
}
1364
return res
1365
}else{
1366
var esc_sep = ''
1368
switch(sep.charAt(i)) {
1369
case '*':
1371
case '.':
1372
case '[':
1373
case ']':
1374
case '(':
1375
case ')':
1376
case '|':
1377
case '$':
1378
case '^':
1379
esc_sep += '\\'
1380
}
1381
esc_sep += sep.charAt(i)
1382
}
1383
var re = new RegExp(esc_sep)
1384
if (maxsplit==-1){
1385
// use native Javascript split on self
1386
return self.valueOf().split(re,maxsplit)
1387
}
1388
1389
// javascript split behavior is different from python when
1390
// a maxsplit argument is supplied. (see javascript string split
1391
// function docs for details)
1392
var l=self.valueOf().split(re,-1)
1395
if (b.length > 0) a.push(b.join(sep))
1396
1397
return a
1398
}
1399
}
1400
1401
$StringDict.splitlines = function(self){return $StringDict.split(self,'\n')}
1402
1403
$StringDict.startswith = function(self){
1404
// Return True if string starts with the prefix, otherwise return False.
1405
// prefix can also be a tuple of prefixes to look for. With optional
1406
// start, test string beginning at that position. With optional end,
1407
// stop comparing string at that position.
1409
{self:null, prefix:null, start:null, end:null},
1410
['self', 'prefix', 'start', 'end'],
1411
arguments,{start:0, end:self.length-1},null,null)
1412
var prefixes = $ns['prefix']
1413
if(!isinstance(prefixes,_b_.tuple)){prefixes=[prefixes]}
1416
var s = self.substr(start,end+1)
1417
1419
if (s.indexOf(prefixes[i]) == 0) return true
1420
}
1421
return false
1422
}
1423
1424
$StringDict.strip = function(self,x){
1425
if(x==undefined){x = "\\s"}
1426
return $StringDict.rstrip($StringDict.lstrip(self,x),x)
1427
}
1428
1429
$StringDict.swapcase = function(self) {
1430
//inspired by http://www.geekpedia.com/code69_Swap-string-case-using-JavaScript.html
1431
return self.replace(/([a-z])|([A-Z])/g, function($0,$1,$2)
1432
{ return ($1) ? $0.toUpperCase() : $0.toLowerCase()
1433
})
1434
}
1435
1436
$StringDict.title = function(self) {
1437
//inspired from http://stackoverflow.com/questions/196972/convert-string-to-title-case-with-javascript
1438
return self.replace(/\w\S*/g, function(txt){return txt.charAt(0).toUpperCase() + txt.substr(1).toLowerCase();});
1439
}
1440
1441
$StringDict.translate = function(self,table) {
1443
if (isinstance(table, _b_.dict)) {
1445
var repl = _b_.dict.$dict.get(table,self.charCodeAt(i),-1)
1446
if(repl==-1){res[pos++]=self.charAt(i)}
1447
else if(repl!==None){res[pos++]=repl}
1448
}
1449
}
1451
}
1452
1453
$StringDict.upper = function(self){return self.toUpperCase()}
1454
1455
$StringDict.zfill = function(self, width) {
1456
if (width === undefined || width <= self.length || !self.isnumeric()) {
1457
return self
1458
}
1459
1460
return Array(width - self.length +1).join('0');
1461
}
1462
1463
function str(arg){
1464
if(arg===undefined) return ''
1465
switch(typeof arg) {
1466
case 'string': return arg
1467
case 'number': return arg.toString()
1468
}
1469
1474
// class or its subclasses, but the attribute __str__ of the
1475
// class metaclass (usually "type") or its subclasses (usually
1476
// "object")
1477
// The metaclass is the attribute __class__ of the class dictionary
1478
var func = $B.$type.__getattribute__(arg.$dict.__class__,'__str__')
1483
var f = getattr(arg,'__str__')
1484
// XXX fix : if not better than object.__str__, try __repr__
1485
return f()
1486
}
1487
catch(err){
1489
try{ // try __repr__
1490
var f = getattr(arg,'__repr__')
1492
}catch(err){
1493
if($B.debug>1){console.log(err)}
1494
console.log('Warning - no method __str__ or __repr__, default to toString', arg)
1496
}
1497
}
1498
}
1499
str.__class__ = $B.$factory
1500
str.$dict = $StringDict
1501
$StringDict.$factory = str
1502
$StringDict.__new__ = function(cls){
1503
if(cls===undefined){
1504
throw _b_.TypeError('str.__new__(): not enough arguments')
1505
}
1506
return {__class__:cls.$dict}
1507
}
1508
1511
// dictionary and factory for subclasses of string
1512
var $StringSubclassDict = {
1513
__class__:$B.$type,
1514
__name__:'str'
1515
}
1516
1517
// the methods in subclass apply the methods in $StringDict to the
1518
// result of instance.valueOf(), which is a Javascript string
1519
for(var $attr in $StringDict){
1520
if(typeof $StringDict[$attr]=='function'){
1521
$StringSubclassDict[$attr]=(function(attr){
1522
return function(){
1524
if(arguments.length>0){
1528
}
1529
}
1530
return $StringDict[attr].apply(null,args)
1531
}
1532
})($attr)
1533
}
1534
}
1535
$StringSubclassDict.__mro__ = [$StringSubclassDict,$ObjectDict]
1536
1537
// factory for str subclasses
1538
$B.$StringSubclassFactory = {
1539
__class__:$B.$factory,
1540
$dict:$StringSubclassDict
1541
}
1542
1543
_b_.str = str
1544
1545
// Function to parse the 2nd argument of format()
1546
$B.parse_format_spec = function(spec){
1556
if(spec.charAt(1) && aligns.indexOf(spec.charAt(1))!=-1){
1557
// If the second char is also an alignment specifier, the
1558
// first char is the fill value
1559
this.fill = spec.charAt(0)
1560
this.align = spec.charAt(1)
1561
pos = 2
1562
}else{
1563
// The first character defines alignment : fill defaults to ' '
1564
this.align=aligns[align_pos];
1565
this.fill=' ';
1566
pos++
1567
}
1568
}else{
1569
align_pos = aligns.indexOf(spec.charAt(1))
1570
if(spec.charAt(1) && align_pos!=-1){
1571
// The second character defines alignment : fill is the first one
1572
this.align=aligns[align_pos]
1573
this.fill=spec.charAt(0)
1574
pos = 2
1575
}
1576
}
1577
var car = spec.charAt(pos)
1578
if(car=='+'||car=='-'||car==' '){
1579
this.sign=car;
1580
pos++;
1581
car=spec.charAt(pos);
1584
if(car=='0'){
1585
// sign-aware : equivalent to fill=0 and align=='='
1586
this.fill='0'
1587
this.align = '='
1588
pos++;car=spec.charAt(pos)
1589
}
1591
if(this.width===undefined){this.width=car}
1592
else{this.width+=car}
1593
pos++;car=spec.charAt(pos)
1595
if(this.width!==undefined){this.width=parseInt(this.width)}
1596
if(car==','){this.comma=true;pos++;car=spec.charAt(pos)}
1597
if(car=='.'){
1598
if(digits.indexOf(spec.charAt(pos+1))==-1){
1599
throw _b_.ValueError("Missing precision in format spec")
1600
}
1601
this.precision = spec.charAt(pos+1)
1602
pos+=2;car=spec.charAt(pos)
1603
while(car && digits.indexOf(car)>-1){
1604
this.precision+=car;pos++;car=spec.charAt(pos)
1605
}
1606
this.precision = parseInt(this.precision)
1607
}
1608
if(car && types.indexOf(car)>-1){this.type=car;pos++;car=spec.charAt(pos)}
1609
if(pos!==spec.length){
1610
console.log('error', spec, this, pos, spec.charAt(pos))
1611
throw _b_.ValueError("Invalid format specifier")
1612
}
1613
}
1614
this.toString = function(){
1615
return (this.fill===undefined ? '' : _b_.str(this.fill))+
1616
(this.align||'')+
1617
(this.sign||'')+
1618
(this.alternate ? '#' : '')+
1619
(this.sign_aware ? '0' : '')+
1620
(this.width || '')+
1621
(this.comma ? ',' : '')+
1622
(this.precision ? '.'+this.precision : '')+
1623
(this.type || '')
1624
}
1625
}
1626
1627
$B.format_width = function(s, fmt){
1628
if(fmt.width && s.length<fmt.width){
1629
var fill=fmt.fill || ' ', align = fmt.align || '<',
1630
missing = fmt.width-s.length
1631
switch(align){
1632
case '<':
1633
return s+fill.repeat(missing)
1634
case '>':
1635
return fill.repeat(missing)+s
1636
case '=':
1637
if('+-'.indexOf(s.charAt(0))>-1){
1638
return s.charAt(0)+fill.repeat(missing)+s.substr(1)
1639
}else{
1640
return fill.repeat(missing)+s
1641
}
1642
case '^':
1643
left = parseInt(missing/2)
1650
})(__BRYTHON__)