forked from rust-lang/rust
-
Notifications
You must be signed in to change notification settings - Fork 0
/
ascii.rs
702 lines (588 loc) · 21.5 KB
/
ascii.rs
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
// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
//! Operations on ASCII strings and characters
use to_str::{ToStr,IntoStr};
use str;
use str::Str;
use str::StrSlice;
use str::OwnedStr;
use container::Container;
use cast;
use iter::Iterator;
use vec::{ImmutableVector, MutableVector, Vector};
use to_bytes::IterBytes;
use option::{Option, Some, None};
/// Datatype to hold one ascii character. It wraps a `u8`, with the highest bit always zero.
#[deriving(Clone, Eq, Ord, TotalOrd, TotalEq)]
pub struct Ascii { priv chr: u8 }
impl Ascii {
/// Converts a ascii character into a `u8`.
#[inline]
pub fn to_byte(self) -> u8 {
self.chr
}
/// Converts a ascii character into a `char`.
#[inline]
pub fn to_char(self) -> char {
self.chr as char
}
/// Convert to lowercase.
#[inline]
pub fn to_lower(self) -> Ascii {
Ascii{chr: ASCII_LOWER_MAP[self.chr]}
}
/// Convert to uppercase.
#[inline]
pub fn to_upper(self) -> Ascii {
Ascii{chr: ASCII_UPPER_MAP[self.chr]}
}
/// Compares two ascii characters of equality, ignoring case.
#[inline]
pub fn eq_ignore_case(self, other: Ascii) -> bool {
ASCII_LOWER_MAP[self.chr] == ASCII_LOWER_MAP[other.chr]
}
// the following methods are like ctype, and the implementation is inspired by musl
/// Check if the character is a letter (a-z, A-Z)
#[inline]
pub fn is_alpha(&self) -> bool {
(self.chr >= 0x41 && self.chr <= 0x5A) || (self.chr >= 0x61 && self.chr <= 0x7A)
}
/// Check if the character is a number (0-9)
#[inline]
pub fn is_digit(&self) -> bool {
self.chr >= 0x30 && self.chr <= 0x39
}
/// Check if the character is a letter or number
#[inline]
pub fn is_alnum(&self) -> bool {
self.is_alpha() || self.is_digit()
}
/// Check if the character is a space or horizontal tab
#[inline]
pub fn is_blank(&self) -> bool {
self.chr == ' ' as u8 || self.chr == '\t' as u8
}
/// Check if the character is a control character
#[inline]
pub fn is_control(&self) -> bool {
self.chr < 0x20 || self.chr == 0x7F
}
/// Checks if the character is printable (except space)
#[inline]
pub fn is_graph(&self) -> bool {
(self.chr - 0x21) < 0x5E
}
/// Checks if the character is printable (including space)
#[inline]
pub fn is_print(&self) -> bool {
(self.chr - 0x20) < 0x5F
}
/// Checks if the character is lowercase
#[inline]
pub fn is_lower(&self) -> bool {
(self.chr - 'a' as u8) < 26
}
/// Checks if the character is uppercase
#[inline]
pub fn is_upper(&self) -> bool {
(self.chr - 'A' as u8) < 26
}
/// Checks if the character is punctuation
#[inline]
pub fn is_punctuation(&self) -> bool {
self.is_graph() && !self.is_alnum()
}
/// Checks if the character is a valid hex digit
#[inline]
pub fn is_hex(&self) -> bool {
self.is_digit() || ((self.chr | 32u8) - 'a' as u8) < 6
}
}
impl ToStr for Ascii {
#[inline]
fn to_str(&self) -> ~str {
// self.chr is always a valid utf8 byte, no need for the check
unsafe { str::raw::from_byte(self.chr) }
}
}
/// Trait for converting into an ascii type.
pub trait AsciiCast<T> {
/// Convert to an ascii type, fail on non-ASCII input.
#[inline]
fn to_ascii(&self) -> T {
assert!(self.is_ascii());
unsafe {self.to_ascii_nocheck()}
}
/// Convert to an ascii type, return None on non-ASCII input.
#[inline]
fn to_ascii_opt(&self) -> Option<T> {
if self.is_ascii() {
Some(unsafe { self.to_ascii_nocheck() })
} else {
None
}
}
/// Convert to an ascii type, not doing any range asserts
unsafe fn to_ascii_nocheck(&self) -> T;
/// Check if convertible to ascii
fn is_ascii(&self) -> bool;
}
impl<'a> AsciiCast<&'a[Ascii]> for &'a [u8] {
#[inline]
unsafe fn to_ascii_nocheck(&self) -> &'a[Ascii] {
cast::transmute(*self)
}
#[inline]
fn is_ascii(&self) -> bool {
for b in self.iter() {
if !b.is_ascii() { return false; }
}
true
}
}
impl<'a> AsciiCast<&'a [Ascii]> for &'a str {
#[inline]
unsafe fn to_ascii_nocheck(&self) -> &'a [Ascii] {
cast::transmute(*self)
}
#[inline]
fn is_ascii(&self) -> bool {
self.bytes().all(|b| b.is_ascii())
}
}
impl AsciiCast<Ascii> for u8 {
#[inline]
unsafe fn to_ascii_nocheck(&self) -> Ascii {
Ascii{ chr: *self }
}
#[inline]
fn is_ascii(&self) -> bool {
*self & 128 == 0u8
}
}
impl AsciiCast<Ascii> for char {
#[inline]
unsafe fn to_ascii_nocheck(&self) -> Ascii {
Ascii{ chr: *self as u8 }
}
#[inline]
fn is_ascii(&self) -> bool {
*self as u32 - ('\x7F' as u32 & *self as u32) == 0
}
}
/// Trait for copyless casting to an ascii vector.
pub trait OwnedAsciiCast {
/// Check if convertible to ascii
fn is_ascii(&self) -> bool;
/// Take ownership and cast to an ascii vector. Fail on non-ASCII input.
#[inline]
fn into_ascii(self) -> ~[Ascii] {
assert!(self.is_ascii());
unsafe {self.into_ascii_nocheck()}
}
/// Take ownership and cast to an ascii vector. Return None on non-ASCII input.
#[inline]
fn into_ascii_opt(self) -> Option<~[Ascii]> {
if self.is_ascii() {
Some(unsafe { self.into_ascii_nocheck() })
} else {
None
}
}
/// Take ownership and cast to an ascii vector.
/// Does not perform validation checks.
unsafe fn into_ascii_nocheck(self) -> ~[Ascii];
}
impl OwnedAsciiCast for ~[u8] {
#[inline]
fn is_ascii(&self) -> bool {
self.as_slice().is_ascii()
}
#[inline]
unsafe fn into_ascii_nocheck(self) -> ~[Ascii] {
cast::transmute(self)
}
}
impl OwnedAsciiCast for ~str {
#[inline]
fn is_ascii(&self) -> bool {
self.as_slice().is_ascii()
}
#[inline]
unsafe fn into_ascii_nocheck(self) -> ~[Ascii] {
cast::transmute(self)
}
}
/// Trait for converting an ascii type to a string. Needed to convert
/// `&[Ascii]` to `&str`.
pub trait AsciiStr {
/// Convert to a string.
fn as_str_ascii<'a>(&'a self) -> &'a str;
/// Convert to vector representing a lower cased ascii string.
fn to_lower(&self) -> ~[Ascii];
/// Convert to vector representing a upper cased ascii string.
fn to_upper(&self) -> ~[Ascii];
/// Compares two Ascii strings ignoring case.
fn eq_ignore_case(self, other: &[Ascii]) -> bool;
}
impl<'a> AsciiStr for &'a [Ascii] {
#[inline]
fn as_str_ascii<'a>(&'a self) -> &'a str {
unsafe { cast::transmute(*self) }
}
#[inline]
fn to_lower(&self) -> ~[Ascii] {
self.map(|a| a.to_lower())
}
#[inline]
fn to_upper(&self) -> ~[Ascii] {
self.map(|a| a.to_upper())
}
#[inline]
fn eq_ignore_case(self, other: &[Ascii]) -> bool {
self.iter().zip(other.iter()).all(|(&a, &b)| a.eq_ignore_case(b))
}
}
impl IntoStr for ~[Ascii] {
#[inline]
fn into_str(self) -> ~str {
unsafe { cast::transmute(self) }
}
}
impl IterBytes for Ascii {
#[inline]
fn iter_bytes(&self, _lsb0: bool, f: |buf: &[u8]| -> bool) -> bool {
f([self.to_byte()])
}
}
/// Trait to convert to a owned byte array by consuming self
pub trait IntoBytes {
/// Converts to a owned byte array by consuming self
fn into_bytes(self) -> ~[u8];
}
impl IntoBytes for ~[Ascii] {
fn into_bytes(self) -> ~[u8] {
unsafe { cast::transmute(self) }
}
}
/// Extension methods for ASCII-subset only operations on owned strings
pub trait OwnedStrAsciiExt {
/// Convert the string to ASCII upper case:
/// ASCII letters 'a' to 'z' are mapped to 'A' to 'Z',
/// but non-ASCII letters are unchanged.
fn into_ascii_upper(self) -> ~str;
/// Convert the string to ASCII lower case:
/// ASCII letters 'A' to 'Z' are mapped to 'a' to 'z',
/// but non-ASCII letters are unchanged.
fn into_ascii_lower(self) -> ~str;
}
/// Extension methods for ASCII-subset only operations on string slices
pub trait StrAsciiExt {
/// Makes a copy of the string in ASCII upper case:
/// ASCII letters 'a' to 'z' are mapped to 'A' to 'Z',
/// but non-ASCII letters are unchanged.
fn to_ascii_upper(&self) -> ~str;
/// Makes a copy of the string in ASCII lower case:
/// ASCII letters 'A' to 'Z' are mapped to 'a' to 'z',
/// but non-ASCII letters are unchanged.
fn to_ascii_lower(&self) -> ~str;
/// Check that two strings are an ASCII case-insensitive match.
/// Same as `to_ascii_lower(a) == to_ascii_lower(b)`,
/// but without allocating and copying temporary strings.
fn eq_ignore_ascii_case(&self, other: &str) -> bool;
}
impl<'a> StrAsciiExt for &'a str {
#[inline]
fn to_ascii_upper(&self) -> ~str {
unsafe { str_copy_map_bytes(*self, ASCII_UPPER_MAP) }
}
#[inline]
fn to_ascii_lower(&self) -> ~str {
unsafe { str_copy_map_bytes(*self, ASCII_LOWER_MAP) }
}
#[inline]
fn eq_ignore_ascii_case(&self, other: &str) -> bool {
self.len() == other.len() && self.as_bytes().iter().zip(other.as_bytes().iter()).all(
|(byte_self, byte_other)| ASCII_LOWER_MAP[*byte_self] == ASCII_LOWER_MAP[*byte_other])
}
}
impl OwnedStrAsciiExt for ~str {
#[inline]
fn into_ascii_upper(self) -> ~str {
unsafe { str_map_bytes(self, ASCII_UPPER_MAP) }
}
#[inline]
fn into_ascii_lower(self) -> ~str {
unsafe { str_map_bytes(self, ASCII_LOWER_MAP) }
}
}
#[inline]
unsafe fn str_map_bytes(string: ~str, map: &'static [u8]) -> ~str {
let mut bytes = string.into_bytes();
for b in bytes.mut_iter() {
*b = map[*b];
}
str::raw::from_utf8_owned(bytes)
}
#[inline]
unsafe fn str_copy_map_bytes(string: &str, map: &'static [u8]) -> ~str {
let bytes = string.bytes().map(|b| map[b]).to_owned_vec();
str::raw::from_utf8_owned(bytes)
}
static ASCII_LOWER_MAP: &'static [u8] = &[
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
0x40, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
0x78, 0x79, 0x7a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,
0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7,
0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff,
];
static ASCII_UPPER_MAP: &'static [u8] = &[
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
0x60, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
0x58, 0x59, 0x5a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,
0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7,
0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff,
];
#[cfg(test)]
mod tests {
use prelude::*;
use super::*;
use str::from_char;
use char::from_u32;
macro_rules! v2ascii (
( [$($e:expr),*]) => ( [$(Ascii{chr:$e}),*]);
(&[$($e:expr),*]) => (&[$(Ascii{chr:$e}),*]);
(~[$($e:expr),*]) => (~[$(Ascii{chr:$e}),*]);
)
#[test]
fn test_ascii() {
assert_eq!(65u8.to_ascii().to_byte(), 65u8);
assert_eq!(65u8.to_ascii().to_char(), 'A');
assert_eq!('A'.to_ascii().to_char(), 'A');
assert_eq!('A'.to_ascii().to_byte(), 65u8);
assert_eq!('A'.to_ascii().to_lower().to_char(), 'a');
assert_eq!('Z'.to_ascii().to_lower().to_char(), 'z');
assert_eq!('a'.to_ascii().to_upper().to_char(), 'A');
assert_eq!('z'.to_ascii().to_upper().to_char(), 'Z');
assert_eq!('@'.to_ascii().to_lower().to_char(), '@');
assert_eq!('['.to_ascii().to_lower().to_char(), '[');
assert_eq!('`'.to_ascii().to_upper().to_char(), '`');
assert_eq!('{'.to_ascii().to_upper().to_char(), '{');
assert!('0'.to_ascii().is_digit());
assert!('9'.to_ascii().is_digit());
assert!(!'/'.to_ascii().is_digit());
assert!(!':'.to_ascii().is_digit());
assert!((0x1fu8).to_ascii().is_control());
assert!(!' '.to_ascii().is_control());
assert!((0x7fu8).to_ascii().is_control());
assert!("banana".chars().all(|c| c.is_ascii()));
assert!(!"ประเทศไทย中华Việt Nam".chars().all(|c| c.is_ascii()));
}
#[test]
fn test_ascii_vec() {
let test = &[40u8, 32u8, 59u8];
assert_eq!(test.to_ascii(), v2ascii!([40, 32, 59]));
assert_eq!("( ;".to_ascii(), v2ascii!([40, 32, 59]));
// FIXME: #5475 borrowchk error, owned vectors do not live long enough
// if chained-from directly
let v = ~[40u8, 32u8, 59u8]; assert_eq!(v.to_ascii(), v2ascii!([40, 32, 59]));
let v = ~"( ;"; assert_eq!(v.to_ascii(), v2ascii!([40, 32, 59]));
assert_eq!("abCDef&?#".to_ascii().to_lower().into_str(), ~"abcdef&?#");
assert_eq!("abCDef&?#".to_ascii().to_upper().into_str(), ~"ABCDEF&?#");
assert_eq!("".to_ascii().to_lower().into_str(), ~"");
assert_eq!("YMCA".to_ascii().to_lower().into_str(), ~"ymca");
assert_eq!("abcDEFxyz:.;".to_ascii().to_upper().into_str(), ~"ABCDEFXYZ:.;");
assert!("aBcDeF&?#".to_ascii().eq_ignore_case("AbCdEf&?#".to_ascii()));
assert!("".is_ascii());
assert!("a".is_ascii());
assert!(!"\u2009".is_ascii());
}
#[test]
fn test_owned_ascii_vec() {
assert_eq!((~"( ;").into_ascii(), v2ascii!(~[40, 32, 59]));
assert_eq!((~[40u8, 32u8, 59u8]).into_ascii(), v2ascii!(~[40, 32, 59]));
}
#[test]
fn test_ascii_as_str() {
let v = v2ascii!([40, 32, 59]);
assert_eq!(v.as_str_ascii(), "( ;");
}
#[test]
fn test_ascii_into_str() {
assert_eq!(v2ascii!(~[40, 32, 59]).into_str(), ~"( ;");
}
#[test]
fn test_ascii_to_bytes() {
assert_eq!(v2ascii!(~[40, 32, 59]).into_bytes(), ~[40u8, 32u8, 59u8]);
}
#[test] #[should_fail]
fn test_ascii_vec_fail_u8_slice() { (&[127u8, 128u8, 255u8]).to_ascii(); }
#[test] #[should_fail]
fn test_ascii_vec_fail_str_slice() { "zoä华".to_ascii(); }
#[test] #[should_fail]
fn test_ascii_fail_u8_slice() { 255u8.to_ascii(); }
#[test] #[should_fail]
fn test_ascii_fail_char_slice() { 'λ'.to_ascii(); }
#[test]
fn test_opt() {
assert_eq!(65u8.to_ascii_opt(), Some(Ascii { chr: 65u8 }));
assert_eq!(255u8.to_ascii_opt(), None);
assert_eq!('A'.to_ascii_opt(), Some(Ascii { chr: 65u8 }));
assert_eq!('λ'.to_ascii_opt(), None);
assert_eq!("zoä华".to_ascii_opt(), None);
let test1 = &[127u8, 128u8, 255u8];
assert_eq!((test1).to_ascii_opt(), None);
let v = [40u8, 32u8, 59u8];
let v2 = v2ascii!(&[40, 32, 59]);
assert_eq!(v.to_ascii_opt(), Some(v2));
let v = [127u8, 128u8, 255u8];
assert_eq!(v.to_ascii_opt(), None);
let v = "( ;";
let v2 = v2ascii!(&[40, 32, 59]);
assert_eq!(v.to_ascii_opt(), Some(v2));
assert_eq!("zoä华".to_ascii_opt(), None);
assert_eq!((~[40u8, 32u8, 59u8]).into_ascii_opt(), Some(v2ascii!(~[40, 32, 59])));
assert_eq!((~[127u8, 128u8, 255u8]).into_ascii_opt(), None);
assert_eq!((~"( ;").into_ascii_opt(), Some(v2ascii!(~[40, 32, 59])));
assert_eq!((~"zoä华").into_ascii_opt(), None);
}
#[test]
fn test_to_ascii_upper() {
assert_eq!("url()URL()uRl()ürl".to_ascii_upper(), ~"URL()URL()URL()üRL");
assert_eq!("hıKß".to_ascii_upper(), ~"HıKß");
let mut i = 0;
while i <= 500 {
let upper = if 'a' as u32 <= i && i <= 'z' as u32 { i + 'A' as u32 - 'a' as u32 }
else { i };
assert_eq!(from_char(from_u32(i).unwrap()).to_ascii_upper(),
from_char(from_u32(upper).unwrap()))
i += 1;
}
}
#[test]
fn test_to_ascii_lower() {
assert_eq!("url()URL()uRl()Ürl".to_ascii_lower(), ~"url()url()url()Ürl");
// Dotted capital I, Kelvin sign, Sharp S.
assert_eq!("HİKß".to_ascii_lower(), ~"hİKß");
let mut i = 0;
while i <= 500 {
let lower = if 'A' as u32 <= i && i <= 'Z' as u32 { i + 'a' as u32 - 'A' as u32 }
else { i };
assert_eq!(from_char(from_u32(i).unwrap()).to_ascii_lower(),
from_char(from_u32(lower).unwrap()))
i += 1;
}
}
#[test]
fn test_into_ascii_upper() {
assert_eq!((~"url()URL()uRl()ürl").into_ascii_upper(), ~"URL()URL()URL()üRL");
assert_eq!((~"hıKß").into_ascii_upper(), ~"HıKß");
let mut i = 0;
while i <= 500 {
let upper = if 'a' as u32 <= i && i <= 'z' as u32 { i + 'A' as u32 - 'a' as u32 }
else { i };
assert_eq!(from_char(from_u32(i).unwrap()).into_ascii_upper(),
from_char(from_u32(upper).unwrap()))
i += 1;
}
}
#[test]
fn test_into_ascii_lower() {
assert_eq!((~"url()URL()uRl()Ürl").into_ascii_lower(), ~"url()url()url()Ürl");
// Dotted capital I, Kelvin sign, Sharp S.
assert_eq!((~"HİKß").into_ascii_lower(), ~"hİKß");
let mut i = 0;
while i <= 500 {
let lower = if 'A' as u32 <= i && i <= 'Z' as u32 { i + 'a' as u32 - 'A' as u32 }
else { i };
assert_eq!(from_char(from_u32(i).unwrap()).into_ascii_lower(),
from_char(from_u32(lower).unwrap()))
i += 1;
}
}
#[test]
fn test_eq_ignore_ascii_case() {
assert!("url()URL()uRl()Ürl".eq_ignore_ascii_case("url()url()url()Ürl"));
assert!(!"Ürl".eq_ignore_ascii_case("ürl"));
// Dotted capital I, Kelvin sign, Sharp S.
assert!("HİKß".eq_ignore_ascii_case("hİKß"));
assert!(!"İ".eq_ignore_ascii_case("i"));
assert!(!"K".eq_ignore_ascii_case("k"));
assert!(!"ß".eq_ignore_ascii_case("s"));
let mut i = 0;
while i <= 500 {
let c = i;
let lower = if 'A' as u32 <= c && c <= 'Z' as u32 { c + 'a' as u32 - 'A' as u32 }
else { c };
assert!(from_char(from_u32(i).unwrap()).
eq_ignore_ascii_case(from_char(from_u32(lower).unwrap())));
i += 1;
}
}
#[test]
fn test_to_str() {
let s = Ascii{ chr: 't' as u8 }.to_str();
assert_eq!(s, ~"t");
}
}