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Newer
100644
1640 lines (1469 sloc)
51.3 KB
1
;(function($B){
2
4
5
var $ObjectDict = object.$dict
6
7
var $StringDict = {__class__:$B.$type,
9
__name__:'str',
10
$native:true
11
}
12
13
$StringDict.__add__ = function(self,other){
14
if(!(typeof other==="string")){
15
try{return getattr(other,'__radd__')(self)}
16
catch(err){throw _b_.TypeError(
17
"Can't convert "+$B.get_class(other).__name__+" to str implicitely")}
18
}
19
return self+other
20
}
21
22
$StringDict.__contains__ = function(self,item){
23
if(!(typeof item==="string")){throw _b_.TypeError(
24
"'in <string>' requires string as left operand, not "+item.__class__)}
25
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
tabsize=tabsize || 8
840
var _str=''
841
for (var i=0; i < tabsize; i++) _str+=' '
842
return self.valueOf().replace(/\t/g, _str)
843
}
844
845
$StringDict.find = function(self){
846
// Return the lowest index in the string where substring sub is found,
847
// such that sub is contained in the slice s[start:end]. Optional
848
// arguments start and end are interpreted as in slice notation.
849
// Return -1 if sub is not found.
850
var start=0,end=self.length
852
{self:null, sub:null, start:null, end:null},
853
['self', 'sub', 'start','end'],
854
arguments,{start:0, end:self.length},null,null)
855
for(var attr in $ns){eval('var '+attr+'=$ns[attr]')}
856
if(!isinstance(sub,str)){throw _b_.TypeError(
857
"Can't convert '"+sub.__class__.__name__+"' object to str implicitly")}
858
if(!isinstance(start,_b_.int)||!isinstance(end,_b_.int)){
859
throw _b_.TypeError(
860
"slice indices must be integers or None or have an __index__ method")}
861
var s = self.substring(start,end)
862
var esc_sub = ''
864
switch(sub.charAt(i)) {
865
case '[':
866
case '.':
867
case '*':
868
case '+':
869
case '?':
870
case '|':
871
case '(':
872
case ')':
873
case '$':
874
case '^':
875
esc_sub += '\\'
876
}
877
esc_sub += sub.charAt(i)
878
}
879
var res = s.search(esc_sub)
880
if(res==-1) return -1
881
return start+res
882
}
883
887
888
// Parse a "format string", as described in the Python documentation
889
// Return a format object. For the format string
890
// a.x[z]!r:...
891
// the object has attributes :
892
// - name : "a"
893
// - name_ext : [".x", "[z]"]
894
// - conv : r
895
// - spec : rest of string after :
896
897
var elts = fmt_string.split(':'), name, conv, spec, name_ext=[]
898
if(elts.length==1){
899
// No : in the string : it only contains a name
900
name = fmt_string
901
}else{
902
// name is before the first ":"
903
// spec (the format specification) is after
904
name = elts[0]
905
spec = elts.splice(1).join(':')
906
}
907
908
var elts = name.split('!')
909
if(elts.length>1){
910
name=elts[0]
911
conv=elts[1] // conversion flag
912
if(conv.length!==1 || 'ras'.search(conv)==-1){
913
throw _b_.ValueError('wrong conversion flag '+conv)
914
}
915
}
916
917
if(name!==undefined){
918
// "name' may be a subscription or attribute
919
// Put these "extensions" in the list "name_ext"
920
function name_repl(match){
921
name_ext.push(match)
922
return ''
923
}
924
var name_ext_re = /\.[_a-zA-Z][_a-zA-Z0-9]*|\[[_a-zA-Z][_a-zA-Z0-9]*\]|\[[0-9]+\]/g
925
name = name.replace(name_ext_re, name_repl)
926
}
927
931
933
935
arguments, {}, 'args', 'kw')
936
937
// Parse self to detect formatting instructions
938
// Create a list "parts" made of sections of the string :
939
// - elements of even rank are literal text
940
// - elements of odd rank are "format objects", built from the
941
// format strings in self (of the form {...})
942
var pos=0, _len=self.length, car, text='', parts=[], rank=0, defaults={}
943
944
while(pos<_len){
945
car = self.charAt(pos)
946
if(car=='{' && self.charAt(pos+1)=='{'){
947
// replace {{ by literal {
948
text += '{'
949
pos+=2
950
}else if(car=='}' && self.charAt(pos+1)=='}'){
951
// replace }} by literal }
952
text += '}'
953
pos+=2
954
}else if(car=='{'){
955
// Start of a format string
956
957
// Store current literal text
958
parts.push(text)
959
960
// Search the end of the format string, ie the } closing the
961
// opening {. Since the string can contain other pairs {} for
962
// nested formatting, an integer nb is incremented for each { and
963
// decremented for each } ; the end of the format string is
964
// reached when nb==0
965
var end = pos+1, nb=1
966
while(end<_len){
967
if(self.charAt(end)=='{'){nb++;end++}
968
else if(self.charAt(end)=='}'){
969
nb--;end++
970
if(nb==0){
971
// End of format string
972
var fmt_string = self.substring(pos+1, end-1)
973
974
// Create a format object, by function parse_format
975
var fmt_obj = parse_format(fmt_string)
976
977
// If no name is explicitely provided, use the rank
978
if(!fmt_obj.name){
979
fmt_obj.name=rank+''
980
rank++
981
}
982
984
// "spec" may contain "nested replacement fields"
985
// In this case, evaluate them using the keyword
986
// arguments passed to format()
987
function replace_nested(name, key){
990
}
991
fmt_obj.spec = fmt_obj.spec.replace(/\{(.+?)\}/g,
992
replace_nested)
993
}
994
995
// Store format object in list "parts"
996
parts.push(fmt_obj)
997
text = ''
998
break
999
}
1000
}else{end++}
1001
}
1002
if(nb>0){throw ValueError("wrong format "+self)}
1003
pos = end
1004
}else{text += car;pos++}
1005
}
1007
1008
// Apply formatting to the values passed to format()
1009
var res = '', fmt
1010
for(var i=0;i<parts.length;i++){
1011
// Literal text is added unchanged
1012
if(typeof parts[i]=='string'){res += parts[i];continue}
1013
1014
// Format objects
1015
fmt = parts[i]
1016
if(fmt.name.charAt(0).search(/\d/)>-1){
1017
// Numerical reference : use positional arguments
1018
var pos = parseInt(fmt.name),
1019
value = _b_.tuple.$dict.__getitem__($.args, pos)
1020
}else{
1021
// Use keyword arguments
1022
var value = _b_.dict.$dict.__getitem__($.kw, fmt.name)
1023
}
1024
// If name has extensions (attributes or subscriptions)
1025
for(var j=0;j<fmt.name_ext.length;j++){
1026
var ext = fmt.name_ext[j]
1027
if(ext.charAt(0)=='.'){
1028
// Attribute
1029
value = _b_.getattr(value, ext.substr(1))
1030
}else{
1031
// Subscription
1032
var key = ext.substr(1, ext.length-2)
1033
// An index made of digits is transformed into an integer
1034
if(key.charAt(0).search(/\d/)>-1){key = parseInt(key)}
1035
value = _b_.getattr(value, '__getitem__')(key)
1036
}
1037
}
1038
// If the conversion flag is set, first call a function to convert
1039
// the value
1040
if(fmt.conv=='a'){value = _b_.ascii(value)}
1041
else if(fmt.conv=='r'){value = _b_.repr(value)}
1042
else if(fmt.conv=='s'){value = _b_.str(value)}
1043
1044
// Call attribute __format__ to perform the actual formatting
1045
res += _b_.getattr(value, '__format__')(fmt.spec)
1046
}
1048
}
1049
1050
$StringDict.format_map = function(self) {
1051
throw NotImplementedError("function format_map not implemented yet");
1052
}
1053
1054
$StringDict.index = function(self){
1055
// Like find(), but raise ValueError when the substring is not found.
1056
var res = $StringDict.find.apply(self,arguments)
1057
if(res===-1) throw _b_.ValueError("substring not found")
1058
return res
1059
}
1060
1061
$StringDict.isalnum = function(self) {return /^[a-z0-9]+$/i.test(self)}
1062
1063
$StringDict.isalpha = function(self) {return /^[a-z]+$/i.test(self)}
1064
1065
$StringDict.isdecimal = function(self) {
1066
// this is not 100% correct
1067
return /^[0-9]+$/.test(self)
1068
}
1069
1070
$StringDict.isdigit = function(self) { return /^[0-9]+$/.test(self)}
1071
1072
$StringDict.isidentifier = function(self) {
1073
1074
switch(self) {
1075
case 'False':
1076
case 'None':
1077
case 'True':
1078
case 'and':
1079
case 'as':
1080
case 'assert':
1081
case 'break':
1082
case 'class':
1083
case 'continue':
1084
case 'def':
1085
case 'del':
1086
case 'elif':
1087
case 'else':
1088
case 'except':
1089
case 'finally':
1090
case 'for':
1091
case 'from':
1092
case 'global':
1093
case 'if':
1094
case 'import':
1095
case 'in':
1096
case 'is':
1097
case 'lambda':
1098
case 'nonlocal':
1099
case 'not':
1100
case 'or':
1101
case 'pass':
1102
case 'raise':
1103
case 'return':
1104
case 'try':
1105
case 'while':
1106
case 'with':
1107
case 'yield':
1108
return true
1109
}
1110
1111
// fixme.. this isn't complete but should be a good start
1112
return /^[a-z][0-9a-z_]+$/i.test(self)
1113
}
1114
1116
1117
// not sure how to handle unicode variables
1118
$StringDict.isnumeric = function(self) {return /^[0-9]+$/.test(self)}
1119
1120
// inspired by http://www.codingforums.com/archive/index.php/t-17925.html
1121
$StringDict.isprintable = function(self) {return !/[^ -~]/.test(self)}
1122
1123
$StringDict.isspace = function(self) {return /^\s+$/i.test(self)}
1124
1125
$StringDict.istitle = function(self) {return /^([A-Z][a-z]+)(\s[A-Z][a-z]+)$/i.test(self)}
1126
1128
1129
$StringDict.join = function(self,obj){
1130
var iterable=iter(obj)
1131
var res = '',count=0
1132
while(1){
1133
try{
1134
var obj2 = next(iterable)
1135
if(!isinstance(obj2,str)){throw _b_.TypeError(
1136
"sequence item "+count+": expected str instance, "+$B.get_class(obj2).__name__+" found")}
1137
res += obj2+self
1138
count++
1139
}catch(err){
1141
else{throw err}
1142
}
1143
}
1144
if(count==0) return ''
1145
return res.substr(0,res.length-self.length)
1146
}
1147
1148
$StringDict.ljust = function(self, width, fillchar) {
1149
if (width <= self.length) return self
1150
if (fillchar === undefined) fillchar=' '
1151
return self + Array(width - self.length + 1).join(fillchar)
1152
}
1153
1154
$StringDict.lower = function(self){return self.toLowerCase()}
1155
1156
$StringDict.lstrip = function(self,x){
1157
var pattern = null
1158
if(x==undefined){pattern="\\s*"}
1159
else{pattern = "["+x+"]*"}
1160
var sp = new RegExp("^"+pattern)
1161
return self.replace(sp,"")
1162
}
1163
1164
// note, maketrans should be a static function.
1165
$StringDict.maketrans = function(from, to) {
1166
var _t=[]
1167
// make 'default' translate table
1168
for(var i=0; i < 256; i++) _t[i]=String.fromCharCode(i)
1169
1170
// make substitution in the translation table
1172
var _ndx=from.source[i].charCodeAt(0) //retrieve ascii code of char
1173
_t[_ndx]=to.source[i]
1174
}
1175
1176
// create a data structure that string.translate understands
1178
for(var i=0; i < 256; i++) {
1180
}
1181
return _d
1182
}
1183
1184
$StringDict.partition = function(self,sep) {
1185
if (sep === undefined) {
1186
throw Error("sep argument is required");
1187
return
1188
}
1189
var i=self.indexOf(sep)
1190
if (i== -1) return _b_.tuple([self, '', ''])
1191
return _b_.tuple([self.substring(0,i), sep, self.substring(i+sep.length)])
1192
}
1193
1194
function $re_escape(str)
1195
{
1196
var specials = "[.*+?|()$^"
1198
var re = new RegExp('\\'+specials.charAt(i),'g')
1199
str = str.replace(re, "\\"+specials.charAt(i))
1200
}
1201
return str
1202
}
1203
1204
$StringDict.replace = function(self, old, _new, count) {
1205
// Replaces occurrences of 'old' by '_new'. Count references
1206
// the number of times to replace. In CPython, negative or undefined
1207
// values of count means replace all.
1208
if (count === undefined) {
1209
count = -1;
1210
} else {
1211
// Validate instance type of 'count'
1212
if (!isinstance(count,[_b_.int,_b_.float])) {
1213
throw _b_.TypeError("'" + str(count.__class__) + "' object cannot be interpreted as an integer");
1214
} else if (isinstance(count, _b_.float)) {
1215
throw _b_.TypeError("integer argument expected, got float");
1216
}
1217
}
1218
1219
var res = self.valueOf();
1220
var pos = -1;
1221
if (count < 0) count = res.length;
1222
while (count > 0) {
1223
pos = res.indexOf(old, pos);
1224
if (pos < 0)
1225
break;
1226
res = res.substr(0, pos) + _new + res.substr(pos + old.length);
1227
pos = pos + _new.length;
1228
count--;
1229
}
1230
return res;
1231
}
1232
1233
$StringDict.rfind = function(self){
1234
// Return the highest index in the string where substring sub is found,
1235
// such that sub is contained within s[start:end]. Optional arguments
1236
// start and end are interpreted as in slice notation. Return -1 on failure.
1238
{self:null, sub:null, start:null, end:null},
1239
['self', 'sub', 'start', 'end'],
1240
arguments,{start:0, end:self.length},null,null)
1241
for(var attr in $ns){eval('var '+attr+'=$ns[attr]')}
1242
if(!isinstance(sub,str)){throw _b_.TypeError(
1243
"Can't convert '"+sub.__class__.__name__+"' object to str implicitly")}
1244
if(!isinstance(start,_b_.int)||!isinstance(end,_b_.int)){throw _b_.TypeError(
1245
"slice indices must be integers or None or have an __index__ method")}
1246
1247
var s = self.substring(start,end)
1248
1249
// why not use lastIndexOf, which passes all brython tests..?
1250
return self.lastIndexOf(sub)
1251
}
1252
1253
$StringDict.rindex = function(){
1254
// Like rfind() but raises ValueError when the substring sub is not found
1255
var res = $StringDict.rfind.apply(this,arguments)
1256
if(res==-1){throw _b_.ValueError("substring not found")}
1257
return res
1258
}
1259
1260
$StringDict.rjust = function(self) {
1262
{self:null, width:null, fillchar:null},
1263
['self', 'width', 'fillchar'],
1264
arguments,{fillchar:' '},null,null)
1265
for(var attr in $ns){eval('var '+attr+'=$ns[attr]')}
1266
1267
if (width <= self.length) return self
1268
1269
return Array(width - self.length + 1).join(fillchar) + self
1270
}
1271
1272
$StringDict.rpartition = function(self,sep) {
1273
if (sep === undefined) {
1274
throw Error("sep argument is required");
1275
return
1276
}
1277
var pos=self.length-sep.length
1278
while(1){
1279
if(self.substr(pos,sep.length)==sep){
1280
return _b_.tuple([self.substr(0,pos),sep,self.substr(pos+sep.length)])
1281
}else{
1282
pos--
1283
if(pos<0){return _b_.tuple(['','',self])}
1284
}
1285
}
1286
}
1287
1288
$StringDict.rsplit = function(self) {
1289
var args = [], pos=0
1290
for(var i=1,_len_i=arguments.length;i<_len_i;i++){args[pos++]=arguments[i]}
1292
var sep=None,maxsplit=-1
1293
if($ns['args'].length>=1){sep=$ns['args'][0]}
1294
if($ns['args'].length==2){maxsplit=$ns['args'][1]}
1296
1298
1300
1301
if (array.length <= maxsplit || maxsplit == -1) return array
1302
1303
var s=[]
1304
1305
s = array.splice(array.length - maxsplit, array.length)
1306
s.splice(0, 0, array.join(sep))
1307
1308
return s
1309
}
1310
1311
$StringDict.rstrip = function(self,x){
1312
if(x==undefined){var pattern="\\s*"}
1313
else{var pattern = "["+x+"]*"}
1314
sp = new RegExp(pattern+'$')
1315
return str(self.replace(sp,""))
1316
}
1317
1318
$StringDict.split = function(self){
1319
var args = [], pos=0
1320
for(var i=1,_len_i=arguments.length;i<_len_i;i++){args[pos++]=arguments[i]}
1322
var sep=None,maxsplit=-1
1323
if($ns['args'].length>=1){sep=$ns['args'][0]}
1324
if($ns['args'].length==2){maxsplit=$ns['args'][1]}
1325
maxsplit = _b_.dict.$dict.get($ns['kw'],'maxsplit',maxsplit)
1327
if(sep===None){
1328
var res = []
1329
var pos = 0
1330
while(pos<self.length&&self.charAt(pos).search(/\s/)>-1){pos++}
1332
var name = ''
1333
while(1){
1334
if(self.charAt(pos).search(/\s/)===-1){
1335
if(name===''){name=self.charAt(pos)}
1336
else{name+=self.charAt(pos)}
1337
}else{
1338
if(name!==''){
1339
res.push(name)
1340
if(maxsplit!==-1&&res.length===maxsplit+1){
1341
res.pop()
1342
res.push(name+self.substr(pos))
1343
return res
1344
}
1345
name=''
1346
}
1347
}
1348
pos++
1349
if(pos>self.length-1){
1350
if(name){res.push(name)}
1351
break
1352
}
1353
}
1354
return res
1355
}else{
1356
var esc_sep = ''
1358
switch(sep.charAt(i)) {
1359
case '*':
1361
case '.':
1362
case '[':
1363
case ']':
1364
case '(':
1365
case ')':
1366
case '|':
1367
case '$':
1368
case '^':
1369
esc_sep += '\\'
1370
}
1371
esc_sep += sep.charAt(i)
1372
}
1373
var re = new RegExp(esc_sep)
1374
if (maxsplit==-1){
1375
// use native Javascript split on self
1376
return self.valueOf().split(re,maxsplit)
1377
}
1378
1379
// javascript split behavior is different from python when
1380
// a maxsplit argument is supplied. (see javascript string split
1381
// function docs for details)
1382
var l=self.valueOf().split(re,-1)
1385
if (b.length > 0) a.push(b.join(sep))
1386
1387
return a
1388
}
1389
}
1390
1391
$StringDict.splitlines = function(self){return $StringDict.split(self,'\n')}
1392
1393
$StringDict.startswith = function(self){
1394
// Return True if string starts with the prefix, otherwise return False.
1395
// prefix can also be a tuple of prefixes to look for. With optional
1396
// start, test string beginning at that position. With optional end,
1397
// stop comparing string at that position.
1399
{self:null, prefix:null, start:null, end:null},
1400
['self', 'prefix', 'start', 'end'],
1401
arguments,{start:0, end:self.length-1},null,null)
1402
var prefixes = $ns['prefix']
1403
if(!isinstance(prefixes,_b_.tuple)){prefixes=[prefixes]}
1406
var s = self.substr(start,end+1)
1407
1409
if (s.indexOf(prefixes[i]) == 0) return true
1410
}
1411
return false
1412
}
1413
1414
$StringDict.strip = function(self,x){
1415
if(x==undefined){x = "\\s"}
1416
return $StringDict.rstrip($StringDict.lstrip(self,x),x)
1417
}
1418
1419
$StringDict.swapcase = function(self) {
1420
//inspired by http://www.geekpedia.com/code69_Swap-string-case-using-JavaScript.html
1421
return self.replace(/([a-z])|([A-Z])/g, function($0,$1,$2)
1422
{ return ($1) ? $0.toUpperCase() : $0.toLowerCase()
1423
})
1424
}
1425
1426
$StringDict.title = function(self) {
1427
//inspired from http://stackoverflow.com/questions/196972/convert-string-to-title-case-with-javascript
1428
return self.replace(/\w\S*/g, function(txt){return txt.charAt(0).toUpperCase() + txt.substr(1).toLowerCase();});
1429
}
1430
1431
$StringDict.translate = function(self,table) {
1433
if (isinstance(table, _b_.dict)) {
1435
var repl = _b_.dict.$dict.get(table,self.charCodeAt(i),-1)
1436
if(repl==-1){res[pos++]=self.charAt(i)}
1437
else if(repl!==None){res[pos++]=repl}
1438
}
1439
}
1441
}
1442
1443
$StringDict.upper = function(self){return self.toUpperCase()}
1444
1445
$StringDict.zfill = function(self, width) {
1446
if (width === undefined || width <= self.length || !self.isnumeric()) {
1447
return self
1448
}
1449
1450
return Array(width - self.length +1).join('0');
1451
}
1452
1453
function str(arg){
1454
if(arg===undefined) return ''
1455
switch(typeof arg) {
1456
case 'string': return arg
1457
case 'number': return arg.toString()
1458
}
1459
1464
// class or its subclasses, but the attribute __str__ of the
1465
// class metaclass (usually "type") or its subclasses (usually
1466
// "object")
1467
// The metaclass is the attribute __class__ of the class dictionary
1468
var func = $B.$type.__getattribute__(arg.$dict.__class__,'__str__')
1473
var f = getattr(arg,'__str__')
1474
// XXX fix : if not better than object.__str__, try __repr__
1475
return f()
1476
}
1477
catch(err){
1479
try{ // try __repr__
1480
var f = getattr(arg,'__repr__')
1482
}catch(err){
1483
if($B.debug>1){console.log(err)}
1484
console.log('Warning - no method __str__ or __repr__, default to toString', arg)
1486
}
1487
}
1488
}
1489
str.__class__ = $B.$factory
1490
str.$dict = $StringDict
1491
$StringDict.$factory = str
1492
$StringDict.__new__ = function(cls){
1493
if(cls===undefined){
1494
throw _b_.TypeError('str.__new__(): not enough arguments')
1495
}
1496
return {__class__:cls.$dict}
1497
}
1498
1501
// dictionary and factory for subclasses of string
1502
var $StringSubclassDict = {
1503
__class__:$B.$type,
1504
__name__:'str'
1505
}
1506
1507
// the methods in subclass apply the methods in $StringDict to the
1508
// result of instance.valueOf(), which is a Javascript string
1509
for(var $attr in $StringDict){
1510
if(typeof $StringDict[$attr]=='function'){
1511
$StringSubclassDict[$attr]=(function(attr){
1512
return function(){
1514
if(arguments.length>0){
1518
}
1519
}
1520
return $StringDict[attr].apply(null,args)
1521
}
1522
})($attr)
1523
}
1524
}
1525
$StringSubclassDict.__mro__ = [$StringSubclassDict,$ObjectDict]
1526
1527
// factory for str subclasses
1528
$B.$StringSubclassFactory = {
1529
__class__:$B.$factory,
1530
$dict:$StringSubclassDict
1531
}
1532
1533
_b_.str = str
1534
1535
// Function to parse the 2nd argument of format()
1536
$B.parse_format_spec = function(spec){
1546
if(spec.charAt(1) && aligns.indexOf(spec.charAt(1))!=-1){
1547
// If the second char is also an alignment specifier, the
1548
// first char is the fill value
1549
this.fill = spec.charAt(0)
1550
this.align = spec.charAt(1)
1551
pos = 2
1552
}else{
1553
// The first character defines alignment : fill defaults to ' '
1554
this.align=aligns[align_pos];
1555
this.fill=' ';
1556
pos++
1557
}
1558
}else{
1559
align_pos = aligns.indexOf(spec.charAt(1))
1560
if(spec.charAt(1) && align_pos!=-1){
1561
// The second character defines alignment : fill is the first one
1562
this.align=aligns[align_pos]
1563
this.fill=spec.charAt(0)
1564
pos = 2
1565
}
1566
}
1567
var car = spec.charAt(pos)
1568
if(car=='+'||car=='-'||car==' '){
1569
this.sign=car;
1570
pos++;
1571
car=spec.charAt(pos);
1574
if(car=='0'){
1575
// sign-aware : equivalent to fill=0 and align=='='
1576
this.fill='0'
1577
this.align = '='
1578
pos++;car=spec.charAt(pos)
1579
}
1581
if(this.width===undefined){this.width=car}
1582
else{this.width+=car}
1583
pos++;car=spec.charAt(pos)
1585
if(this.width!==undefined){this.width=parseInt(this.width)}
1586
if(car==','){this.comma=true;pos++;car=spec.charAt(pos)}
1587
if(car=='.'){
1588
if(digits.indexOf(spec.charAt(pos+1))==-1){
1589
throw _b_.ValueError("Missing precision in format spec")
1590
}
1591
this.precision = spec.charAt(pos+1)
1592
pos+=2;car=spec.charAt(pos)
1593
while(car && digits.indexOf(car)>-1){
1594
this.precision+=car;pos++;car=spec.charAt(pos)
1595
}
1596
this.precision = parseInt(this.precision)
1597
}
1598
if(car && types.indexOf(car)>-1){this.type=car;pos++;car=spec.charAt(pos)}
1599
if(pos!==spec.length){
1600
console.log('error', spec, this, pos, spec.charAt(pos))
1601
throw _b_.ValueError("Invalid format specifier")
1602
}
1603
}
1604
this.toString = function(){
1605
return (this.fill===undefined ? '' : _b_.str(this.fill))+
1606
(this.align||'')+
1607
(this.sign||'')+
1608
(this.alternate ? '#' : '')+
1609
(this.sign_aware ? '0' : '')+
1610
(this.width || '')+
1611
(this.comma ? ',' : '')+
1612
(this.precision ? '.'+this.precision : '')+
1613
(this.type || '')
1614
}
1615
}
1616
1617
$B.format_width = function(s, fmt){
1618
if(fmt.width && s.length<fmt.width){
1619
var fill=fmt.fill || ' ', align = fmt.align || '<',
1620
missing = fmt.width-s.length
1621
switch(align){
1622
case '<':
1623
return s+fill.repeat(missing)
1624
case '>':
1625
return fill.repeat(missing)+s
1626
case '=':
1627
if('+-'.indexOf(s.charAt(0))>-1){
1628
return s.charAt(0)+fill.repeat(missing)+s.substr(1)
1629
}else{
1630
return fill.repeat(missing)+s
1631
}
1632
case '^':
1633
left = parseInt(missing/2)
1640
})(__BRYTHON__)