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1a4d82fc JJ |
1 | // Copyright 2013-2014 The Rust Project Developers. See the COPYRIGHT |
2 | // file at the top-level directory of this distribution and at | |
3 | // http://rust-lang.org/COPYRIGHT. | |
4 | // | |
5 | // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or | |
6 | // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license | |
7 | // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your | |
8 | // option. This file may not be copied, modified, or distributed | |
9 | // except according to those terms. | |
1a4d82fc JJ |
10 | |
11 | //! Operations on ASCII strings and characters | |
12 | ||
85aaf69f | 13 | #![stable(feature = "rust1", since = "1.0.0")] |
1a4d82fc | 14 | |
85aaf69f SL |
15 | use prelude::v1::*; |
16 | ||
c34b1796 | 17 | use ops::Range; |
85aaf69f | 18 | use mem; |
1a4d82fc JJ |
19 | |
20 | /// Extension methods for ASCII-subset only operations on owned strings | |
62682a34 | 21 | #[unstable(feature = "owned_ascii_ext", |
85aaf69f | 22 | reason = "would prefer to do this in a more general way")] |
c1a9b12d SL |
23 | #[deprecated(since = "1.3.0", |
24 | reason = "hasn't yet proved essential to be in the standard library")] | |
25 | #[allow(deprecated)] | |
1a4d82fc | 26 | pub trait OwnedAsciiExt { |
9346a6ac | 27 | /// Converts the string to ASCII upper case: |
1a4d82fc JJ |
28 | /// ASCII letters 'a' to 'z' are mapped to 'A' to 'Z', |
29 | /// but non-ASCII letters are unchanged. | |
30 | fn into_ascii_uppercase(self) -> Self; | |
31 | ||
9346a6ac | 32 | /// Converts the string to ASCII lower case: |
1a4d82fc JJ |
33 | /// ASCII letters 'A' to 'Z' are mapped to 'a' to 'z', |
34 | /// but non-ASCII letters are unchanged. | |
35 | fn into_ascii_lowercase(self) -> Self; | |
36 | } | |
37 | ||
c34b1796 | 38 | /// Extension methods for ASCII-subset only operations on string slices. |
85aaf69f SL |
39 | #[stable(feature = "rust1", since = "1.0.0")] |
40 | pub trait AsciiExt { | |
c34b1796 | 41 | /// Container type for copied ASCII characters. |
85aaf69f SL |
42 | #[stable(feature = "rust1", since = "1.0.0")] |
43 | type Owned; | |
44 | ||
9346a6ac | 45 | /// Checks if within the ASCII range. |
c34b1796 AL |
46 | /// |
47 | /// # Examples | |
48 | /// | |
49 | /// ``` | |
50 | /// use std::ascii::AsciiExt; | |
51 | /// | |
52 | /// let ascii = 'a'; | |
53 | /// let utf8 = '❤'; | |
54 | /// | |
55 | /// assert_eq!(true, ascii.is_ascii()); | |
56 | /// assert_eq!(false, utf8.is_ascii()) | |
57 | /// ``` | |
85aaf69f | 58 | #[stable(feature = "rust1", since = "1.0.0")] |
1a4d82fc JJ |
59 | fn is_ascii(&self) -> bool; |
60 | ||
c34b1796 AL |
61 | /// Makes a copy of the string in ASCII upper case. |
62 | /// | |
1a4d82fc JJ |
63 | /// ASCII letters 'a' to 'z' are mapped to 'A' to 'Z', |
64 | /// but non-ASCII letters are unchanged. | |
c34b1796 AL |
65 | /// |
66 | /// # Examples | |
67 | /// | |
68 | /// ``` | |
69 | /// use std::ascii::AsciiExt; | |
70 | /// | |
71 | /// let ascii = 'a'; | |
72 | /// let utf8 = '❤'; | |
73 | /// | |
74 | /// assert_eq!('A', ascii.to_ascii_uppercase()); | |
75 | /// assert_eq!('❤', utf8.to_ascii_uppercase()); | |
76 | /// ``` | |
85aaf69f SL |
77 | #[stable(feature = "rust1", since = "1.0.0")] |
78 | fn to_ascii_uppercase(&self) -> Self::Owned; | |
1a4d82fc | 79 | |
c34b1796 AL |
80 | /// Makes a copy of the string in ASCII lower case. |
81 | /// | |
1a4d82fc JJ |
82 | /// ASCII letters 'A' to 'Z' are mapped to 'a' to 'z', |
83 | /// but non-ASCII letters are unchanged. | |
c34b1796 AL |
84 | /// |
85 | /// # Examples | |
86 | /// | |
87 | /// ``` | |
88 | /// use std::ascii::AsciiExt; | |
89 | /// | |
90 | /// let ascii = 'A'; | |
91 | /// let utf8 = '❤'; | |
92 | /// | |
93 | /// assert_eq!('a', ascii.to_ascii_lowercase()); | |
94 | /// assert_eq!('❤', utf8.to_ascii_lowercase()); | |
95 | /// ``` | |
85aaf69f SL |
96 | #[stable(feature = "rust1", since = "1.0.0")] |
97 | fn to_ascii_lowercase(&self) -> Self::Owned; | |
1a4d82fc | 98 | |
9346a6ac | 99 | /// Checks that two strings are an ASCII case-insensitive match. |
c34b1796 | 100 | /// |
1a4d82fc JJ |
101 | /// Same as `to_ascii_lowercase(a) == to_ascii_lowercase(b)`, |
102 | /// but without allocating and copying temporary strings. | |
c34b1796 AL |
103 | /// |
104 | /// # Examples | |
105 | /// | |
106 | /// ``` | |
107 | /// use std::ascii::AsciiExt; | |
108 | /// | |
109 | /// let ascii1 = 'A'; | |
110 | /// let ascii2 = 'a'; | |
111 | /// let ascii3 = 'A'; | |
112 | /// let ascii4 = 'z'; | |
113 | /// | |
114 | /// assert_eq!(true, ascii1.eq_ignore_ascii_case(&ascii2)); | |
115 | /// assert_eq!(true, ascii1.eq_ignore_ascii_case(&ascii3)); | |
116 | /// assert_eq!(false, ascii1.eq_ignore_ascii_case(&ascii4)); | |
117 | /// ``` | |
85aaf69f | 118 | #[stable(feature = "rust1", since = "1.0.0")] |
1a4d82fc | 119 | fn eq_ignore_ascii_case(&self, other: &Self) -> bool; |
85aaf69f | 120 | |
9346a6ac | 121 | /// Converts this type to its ASCII upper case equivalent in-place. |
85aaf69f SL |
122 | /// |
123 | /// See `to_ascii_uppercase` for more information. | |
c34b1796 AL |
124 | /// |
125 | /// # Examples | |
126 | /// | |
127 | /// ``` | |
c1a9b12d SL |
128 | /// #![feature(ascii)] |
129 | /// | |
c34b1796 AL |
130 | /// use std::ascii::AsciiExt; |
131 | /// | |
132 | /// let mut ascii = 'a'; | |
133 | /// | |
134 | /// ascii.make_ascii_uppercase(); | |
135 | /// | |
136 | /// assert_eq!('A', ascii); | |
137 | /// ``` | |
85aaf69f SL |
138 | #[unstable(feature = "ascii")] |
139 | fn make_ascii_uppercase(&mut self); | |
140 | ||
9346a6ac | 141 | /// Converts this type to its ASCII lower case equivalent in-place. |
85aaf69f SL |
142 | /// |
143 | /// See `to_ascii_lowercase` for more information. | |
c34b1796 AL |
144 | /// |
145 | /// # Examples | |
146 | /// | |
147 | /// ``` | |
c1a9b12d SL |
148 | /// #![feature(ascii)] |
149 | /// | |
c34b1796 AL |
150 | /// use std::ascii::AsciiExt; |
151 | /// | |
152 | /// let mut ascii = 'A'; | |
153 | /// | |
154 | /// ascii.make_ascii_lowercase(); | |
155 | /// | |
156 | /// assert_eq!('a', ascii); | |
157 | /// ``` | |
85aaf69f SL |
158 | #[unstable(feature = "ascii")] |
159 | fn make_ascii_lowercase(&mut self); | |
1a4d82fc JJ |
160 | } |
161 | ||
85aaf69f SL |
162 | #[stable(feature = "rust1", since = "1.0.0")] |
163 | impl AsciiExt for str { | |
164 | type Owned = String; | |
165 | ||
1a4d82fc JJ |
166 | #[inline] |
167 | fn is_ascii(&self) -> bool { | |
168 | self.bytes().all(|b| b.is_ascii()) | |
169 | } | |
170 | ||
171 | #[inline] | |
c1a9b12d | 172 | #[allow(deprecated)] |
1a4d82fc | 173 | fn to_ascii_uppercase(&self) -> String { |
85aaf69f | 174 | self.to_string().into_ascii_uppercase() |
1a4d82fc JJ |
175 | } |
176 | ||
177 | #[inline] | |
c1a9b12d | 178 | #[allow(deprecated)] |
1a4d82fc | 179 | fn to_ascii_lowercase(&self) -> String { |
85aaf69f | 180 | self.to_string().into_ascii_lowercase() |
1a4d82fc JJ |
181 | } |
182 | ||
183 | #[inline] | |
184 | fn eq_ignore_ascii_case(&self, other: &str) -> bool { | |
185 | self.as_bytes().eq_ignore_ascii_case(other.as_bytes()) | |
186 | } | |
85aaf69f SL |
187 | |
188 | fn make_ascii_uppercase(&mut self) { | |
189 | let me: &mut [u8] = unsafe { mem::transmute(self) }; | |
190 | me.make_ascii_uppercase() | |
191 | } | |
192 | ||
193 | fn make_ascii_lowercase(&mut self) { | |
194 | let me: &mut [u8] = unsafe { mem::transmute(self) }; | |
195 | me.make_ascii_lowercase() | |
196 | } | |
1a4d82fc JJ |
197 | } |
198 | ||
c1a9b12d | 199 | #[allow(deprecated)] |
1a4d82fc JJ |
200 | impl OwnedAsciiExt for String { |
201 | #[inline] | |
202 | fn into_ascii_uppercase(self) -> String { | |
203 | // Vec<u8>::into_ascii_uppercase() preserves the UTF-8 invariant. | |
204 | unsafe { String::from_utf8_unchecked(self.into_bytes().into_ascii_uppercase()) } | |
205 | } | |
206 | ||
207 | #[inline] | |
208 | fn into_ascii_lowercase(self) -> String { | |
209 | // Vec<u8>::into_ascii_lowercase() preserves the UTF-8 invariant. | |
210 | unsafe { String::from_utf8_unchecked(self.into_bytes().into_ascii_lowercase()) } | |
211 | } | |
212 | } | |
213 | ||
85aaf69f SL |
214 | #[stable(feature = "rust1", since = "1.0.0")] |
215 | impl AsciiExt for [u8] { | |
216 | type Owned = Vec<u8>; | |
1a4d82fc JJ |
217 | #[inline] |
218 | fn is_ascii(&self) -> bool { | |
219 | self.iter().all(|b| b.is_ascii()) | |
220 | } | |
221 | ||
222 | #[inline] | |
c1a9b12d | 223 | #[allow(deprecated)] |
1a4d82fc | 224 | fn to_ascii_uppercase(&self) -> Vec<u8> { |
85aaf69f | 225 | self.to_vec().into_ascii_uppercase() |
1a4d82fc JJ |
226 | } |
227 | ||
228 | #[inline] | |
c1a9b12d | 229 | #[allow(deprecated)] |
1a4d82fc | 230 | fn to_ascii_lowercase(&self) -> Vec<u8> { |
85aaf69f | 231 | self.to_vec().into_ascii_lowercase() |
1a4d82fc JJ |
232 | } |
233 | ||
234 | #[inline] | |
235 | fn eq_ignore_ascii_case(&self, other: &[u8]) -> bool { | |
236 | self.len() == other.len() && | |
62682a34 | 237 | self.iter().zip(other).all(|(a, b)| { |
1a4d82fc JJ |
238 | a.eq_ignore_ascii_case(b) |
239 | }) | |
240 | } | |
85aaf69f SL |
241 | |
242 | fn make_ascii_uppercase(&mut self) { | |
243 | for byte in self { | |
244 | byte.make_ascii_uppercase(); | |
245 | } | |
246 | } | |
247 | ||
248 | fn make_ascii_lowercase(&mut self) { | |
249 | for byte in self { | |
250 | byte.make_ascii_lowercase(); | |
251 | } | |
252 | } | |
1a4d82fc JJ |
253 | } |
254 | ||
c1a9b12d | 255 | #[allow(deprecated)] |
1a4d82fc JJ |
256 | impl OwnedAsciiExt for Vec<u8> { |
257 | #[inline] | |
258 | fn into_ascii_uppercase(mut self) -> Vec<u8> { | |
85aaf69f | 259 | self.make_ascii_uppercase(); |
1a4d82fc JJ |
260 | self |
261 | } | |
262 | ||
263 | #[inline] | |
264 | fn into_ascii_lowercase(mut self) -> Vec<u8> { | |
85aaf69f | 265 | self.make_ascii_lowercase(); |
1a4d82fc JJ |
266 | self |
267 | } | |
268 | } | |
269 | ||
85aaf69f | 270 | #[stable(feature = "rust1", since = "1.0.0")] |
1a4d82fc | 271 | impl AsciiExt for u8 { |
85aaf69f | 272 | type Owned = u8; |
1a4d82fc | 273 | #[inline] |
c34b1796 | 274 | fn is_ascii(&self) -> bool { *self & 128 == 0 } |
1a4d82fc | 275 | #[inline] |
85aaf69f | 276 | fn to_ascii_uppercase(&self) -> u8 { ASCII_UPPERCASE_MAP[*self as usize] } |
1a4d82fc | 277 | #[inline] |
85aaf69f | 278 | fn to_ascii_lowercase(&self) -> u8 { ASCII_LOWERCASE_MAP[*self as usize] } |
1a4d82fc JJ |
279 | #[inline] |
280 | fn eq_ignore_ascii_case(&self, other: &u8) -> bool { | |
281 | self.to_ascii_lowercase() == other.to_ascii_lowercase() | |
282 | } | |
85aaf69f SL |
283 | #[inline] |
284 | fn make_ascii_uppercase(&mut self) { *self = self.to_ascii_uppercase(); } | |
285 | #[inline] | |
286 | fn make_ascii_lowercase(&mut self) { *self = self.to_ascii_lowercase(); } | |
1a4d82fc JJ |
287 | } |
288 | ||
85aaf69f | 289 | #[stable(feature = "rust1", since = "1.0.0")] |
1a4d82fc | 290 | impl AsciiExt for char { |
85aaf69f | 291 | type Owned = char; |
1a4d82fc JJ |
292 | #[inline] |
293 | fn is_ascii(&self) -> bool { | |
294 | *self as u32 <= 0x7F | |
295 | } | |
296 | ||
297 | #[inline] | |
298 | fn to_ascii_uppercase(&self) -> char { | |
299 | if self.is_ascii() { | |
300 | (*self as u8).to_ascii_uppercase() as char | |
301 | } else { | |
302 | *self | |
303 | } | |
304 | } | |
305 | ||
306 | #[inline] | |
307 | fn to_ascii_lowercase(&self) -> char { | |
308 | if self.is_ascii() { | |
309 | (*self as u8).to_ascii_lowercase() as char | |
310 | } else { | |
311 | *self | |
312 | } | |
313 | } | |
314 | ||
315 | #[inline] | |
316 | fn eq_ignore_ascii_case(&self, other: &char) -> bool { | |
317 | self.to_ascii_lowercase() == other.to_ascii_lowercase() | |
318 | } | |
85aaf69f SL |
319 | |
320 | #[inline] | |
321 | fn make_ascii_uppercase(&mut self) { *self = self.to_ascii_uppercase(); } | |
322 | #[inline] | |
323 | fn make_ascii_lowercase(&mut self) { *self = self.to_ascii_lowercase(); } | |
324 | } | |
325 | ||
326 | /// An iterator over the escaped version of a byte, constructed via | |
327 | /// `std::ascii::escape_default`. | |
328 | #[stable(feature = "rust1", since = "1.0.0")] | |
329 | pub struct EscapeDefault { | |
330 | range: Range<usize>, | |
331 | data: [u8; 4], | |
1a4d82fc JJ |
332 | } |
333 | ||
c34b1796 | 334 | /// Returns an iterator that produces an escaped version of a `u8`. |
1a4d82fc JJ |
335 | /// |
336 | /// The default is chosen with a bias toward producing literals that are | |
337 | /// legal in a variety of languages, including C++11 and similar C-family | |
338 | /// languages. The exact rules are: | |
339 | /// | |
340 | /// - Tab, CR and LF are escaped as '\t', '\r' and '\n' respectively. | |
341 | /// - Single-quote, double-quote and backslash chars are backslash-escaped. | |
342 | /// - Any other chars in the range [0x20,0x7e] are not escaped. | |
85aaf69f | 343 | /// - Any other chars are given hex escapes of the form '\xNN'. |
1a4d82fc | 344 | /// - Unicode escapes are never generated by this function. |
c34b1796 AL |
345 | /// |
346 | /// # Examples | |
347 | /// | |
348 | /// ``` | |
349 | /// use std::ascii; | |
350 | /// | |
351 | /// let escaped = ascii::escape_default(b'0').next().unwrap(); | |
352 | /// assert_eq!(b'0', escaped); | |
353 | /// | |
354 | /// let mut escaped = ascii::escape_default(b'\t'); | |
355 | /// | |
356 | /// assert_eq!(b'\\', escaped.next().unwrap()); | |
357 | /// assert_eq!(b't', escaped.next().unwrap()); | |
358 | /// ``` | |
85aaf69f SL |
359 | #[stable(feature = "rust1", since = "1.0.0")] |
360 | pub fn escape_default(c: u8) -> EscapeDefault { | |
361 | let (data, len) = match c { | |
362 | b'\t' => ([b'\\', b't', 0, 0], 2), | |
363 | b'\r' => ([b'\\', b'r', 0, 0], 2), | |
364 | b'\n' => ([b'\\', b'n', 0, 0], 2), | |
365 | b'\\' => ([b'\\', b'\\', 0, 0], 2), | |
366 | b'\'' => ([b'\\', b'\'', 0, 0], 2), | |
367 | b'"' => ([b'\\', b'"', 0, 0], 2), | |
368 | b'\x20' ... b'\x7e' => ([c, 0, 0, 0], 1), | |
369 | _ => ([b'\\', b'x', hexify(c >> 4), hexify(c & 0xf)], 4), | |
370 | }; | |
371 | ||
c34b1796 | 372 | return EscapeDefault { range: (0.. len), data: data }; |
85aaf69f SL |
373 | |
374 | fn hexify(b: u8) -> u8 { | |
375 | match b { | |
376 | 0 ... 9 => b'0' + b, | |
377 | _ => b'a' + b - 10, | |
1a4d82fc JJ |
378 | } |
379 | } | |
380 | } | |
381 | ||
85aaf69f SL |
382 | #[stable(feature = "rust1", since = "1.0.0")] |
383 | impl Iterator for EscapeDefault { | |
384 | type Item = u8; | |
385 | fn next(&mut self) -> Option<u8> { self.range.next().map(|i| self.data[i]) } | |
386 | fn size_hint(&self) -> (usize, Option<usize>) { self.range.size_hint() } | |
387 | } | |
388 | #[stable(feature = "rust1", since = "1.0.0")] | |
389 | impl DoubleEndedIterator for EscapeDefault { | |
390 | fn next_back(&mut self) -> Option<u8> { | |
391 | self.range.next_back().map(|i| self.data[i]) | |
392 | } | |
393 | } | |
394 | #[stable(feature = "rust1", since = "1.0.0")] | |
395 | impl ExactSizeIterator for EscapeDefault {} | |
396 | ||
1a4d82fc JJ |
397 | static ASCII_LOWERCASE_MAP: [u8; 256] = [ |
398 | 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, | |
399 | 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, | |
400 | 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, | |
401 | 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, | |
402 | b' ', b'!', b'"', b'#', b'$', b'%', b'&', b'\'', | |
403 | b'(', b')', b'*', b'+', b',', b'-', b'.', b'/', | |
404 | b'0', b'1', b'2', b'3', b'4', b'5', b'6', b'7', | |
405 | b'8', b'9', b':', b';', b'<', b'=', b'>', b'?', | |
406 | b'@', | |
407 | ||
408 | b'a', b'b', b'c', b'd', b'e', b'f', b'g', | |
409 | b'h', b'i', b'j', b'k', b'l', b'm', b'n', b'o', | |
410 | b'p', b'q', b'r', b's', b't', b'u', b'v', b'w', | |
411 | b'x', b'y', b'z', | |
412 | ||
413 | b'[', b'\\', b']', b'^', b'_', | |
414 | b'`', b'a', b'b', b'c', b'd', b'e', b'f', b'g', | |
415 | b'h', b'i', b'j', b'k', b'l', b'm', b'n', b'o', | |
416 | b'p', b'q', b'r', b's', b't', b'u', b'v', b'w', | |
417 | b'x', b'y', b'z', b'{', b'|', b'}', b'~', 0x7f, | |
418 | 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, | |
419 | 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, | |
420 | 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, | |
421 | 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, | |
422 | 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, | |
423 | 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, | |
424 | 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, | |
425 | 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, | |
426 | 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, | |
427 | 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, | |
428 | 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, | |
429 | 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, | |
430 | 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, | |
431 | 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, | |
432 | 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, | |
433 | 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, | |
434 | ]; | |
435 | ||
436 | static ASCII_UPPERCASE_MAP: [u8; 256] = [ | |
437 | 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, | |
438 | 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, | |
439 | 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, | |
440 | 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, | |
441 | b' ', b'!', b'"', b'#', b'$', b'%', b'&', b'\'', | |
442 | b'(', b')', b'*', b'+', b',', b'-', b'.', b'/', | |
443 | b'0', b'1', b'2', b'3', b'4', b'5', b'6', b'7', | |
444 | b'8', b'9', b':', b';', b'<', b'=', b'>', b'?', | |
445 | b'@', b'A', b'B', b'C', b'D', b'E', b'F', b'G', | |
446 | b'H', b'I', b'J', b'K', b'L', b'M', b'N', b'O', | |
447 | b'P', b'Q', b'R', b'S', b'T', b'U', b'V', b'W', | |
448 | b'X', b'Y', b'Z', b'[', b'\\', b']', b'^', b'_', | |
449 | b'`', | |
450 | ||
451 | b'A', b'B', b'C', b'D', b'E', b'F', b'G', | |
452 | b'H', b'I', b'J', b'K', b'L', b'M', b'N', b'O', | |
453 | b'P', b'Q', b'R', b'S', b'T', b'U', b'V', b'W', | |
454 | b'X', b'Y', b'Z', | |
455 | ||
456 | b'{', b'|', b'}', b'~', 0x7f, | |
457 | 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, | |
458 | 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, | |
459 | 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, | |
460 | 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, | |
461 | 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, | |
462 | 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, | |
463 | 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, | |
464 | 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, | |
465 | 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, | |
466 | 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, | |
467 | 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, | |
468 | 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, | |
469 | 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, | |
470 | 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, | |
471 | 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, | |
472 | 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, | |
473 | ]; | |
474 | ||
475 | ||
476 | #[cfg(test)] | |
477 | mod tests { | |
478 | use prelude::v1::*; | |
479 | use super::*; | |
480 | use char::from_u32; | |
481 | ||
482 | #[test] | |
c1a9b12d SL |
483 | fn test_is_ascii() { |
484 | assert!(b"".is_ascii()); | |
485 | assert!(b"banana\0\x7F".is_ascii()); | |
486 | assert!(b"banana\0\x7F".iter().all(|b| b.is_ascii())); | |
487 | assert!(!b"Vi\xe1\xbb\x87t Nam".is_ascii()); | |
488 | assert!(!b"Vi\xe1\xbb\x87t Nam".iter().all(|b| b.is_ascii())); | |
489 | assert!(!b"\xe1\xbb\x87".iter().any(|b| b.is_ascii())); | |
1a4d82fc | 490 | |
1a4d82fc | 491 | assert!("".is_ascii()); |
c1a9b12d SL |
492 | assert!("banana\0\u{7F}".is_ascii()); |
493 | assert!("banana\0\u{7F}".chars().all(|c| c.is_ascii())); | |
494 | assert!(!"ประเทศไทย中华Việt Nam".chars().all(|c| c.is_ascii())); | |
495 | assert!(!"ประเทศไทย中华ệ ".chars().any(|c| c.is_ascii())); | |
1a4d82fc JJ |
496 | } |
497 | ||
498 | #[test] | |
499 | fn test_to_ascii_uppercase() { | |
500 | assert_eq!("url()URL()uRl()ürl".to_ascii_uppercase(), "URL()URL()URL()üRL"); | |
501 | assert_eq!("hıKß".to_ascii_uppercase(), "HıKß"); | |
502 | ||
c34b1796 | 503 | for i in 0..501 { |
1a4d82fc JJ |
504 | let upper = if 'a' as u32 <= i && i <= 'z' as u32 { i + 'A' as u32 - 'a' as u32 } |
505 | else { i }; | |
506 | assert_eq!((from_u32(i).unwrap()).to_string().to_ascii_uppercase(), | |
507 | (from_u32(upper).unwrap()).to_string()); | |
1a4d82fc JJ |
508 | } |
509 | } | |
510 | ||
511 | #[test] | |
512 | fn test_to_ascii_lowercase() { | |
513 | assert_eq!("url()URL()uRl()Ürl".to_ascii_lowercase(), "url()url()url()Ürl"); | |
514 | // Dotted capital I, Kelvin sign, Sharp S. | |
515 | assert_eq!("HİKß".to_ascii_lowercase(), "hİKß"); | |
516 | ||
c34b1796 | 517 | for i in 0..501 { |
1a4d82fc JJ |
518 | let lower = if 'A' as u32 <= i && i <= 'Z' as u32 { i + 'a' as u32 - 'A' as u32 } |
519 | else { i }; | |
520 | assert_eq!((from_u32(i).unwrap()).to_string().to_ascii_lowercase(), | |
521 | (from_u32(lower).unwrap()).to_string()); | |
1a4d82fc JJ |
522 | } |
523 | } | |
524 | ||
525 | #[test] | |
526 | fn test_into_ascii_uppercase() { | |
527 | assert_eq!(("url()URL()uRl()ürl".to_string()).into_ascii_uppercase(), | |
528 | "URL()URL()URL()üRL".to_string()); | |
529 | assert_eq!(("hıKß".to_string()).into_ascii_uppercase(), "HıKß"); | |
530 | ||
c34b1796 | 531 | for i in 0..501 { |
1a4d82fc JJ |
532 | let upper = if 'a' as u32 <= i && i <= 'z' as u32 { i + 'A' as u32 - 'a' as u32 } |
533 | else { i }; | |
534 | assert_eq!((from_u32(i).unwrap()).to_string().into_ascii_uppercase(), | |
535 | (from_u32(upper).unwrap()).to_string()); | |
1a4d82fc JJ |
536 | } |
537 | } | |
538 | ||
539 | #[test] | |
540 | fn test_into_ascii_lowercase() { | |
541 | assert_eq!(("url()URL()uRl()Ürl".to_string()).into_ascii_lowercase(), | |
542 | "url()url()url()Ürl"); | |
543 | // Dotted capital I, Kelvin sign, Sharp S. | |
544 | assert_eq!(("HİKß".to_string()).into_ascii_lowercase(), "hİKß"); | |
545 | ||
c34b1796 | 546 | for i in 0..501 { |
1a4d82fc JJ |
547 | let lower = if 'A' as u32 <= i && i <= 'Z' as u32 { i + 'a' as u32 - 'A' as u32 } |
548 | else { i }; | |
549 | assert_eq!((from_u32(i).unwrap()).to_string().into_ascii_lowercase(), | |
550 | (from_u32(lower).unwrap()).to_string()); | |
1a4d82fc JJ |
551 | } |
552 | } | |
553 | ||
c1a9b12d SL |
554 | #[test] |
555 | fn test_make_ascii_lower_case() { | |
556 | macro_rules! test { | |
557 | ($from: expr, $to: expr) => { | |
558 | { | |
559 | let mut x = $from; | |
560 | x.make_ascii_lowercase(); | |
561 | assert_eq!(x, $to); | |
562 | } | |
563 | } | |
564 | } | |
565 | test!(b'A', b'a'); | |
566 | test!(b'a', b'a'); | |
567 | test!(b'!', b'!'); | |
568 | test!('A', 'a'); | |
569 | test!('À', 'À'); | |
570 | test!('a', 'a'); | |
571 | test!('!', '!'); | |
572 | test!(b"H\xc3\x89".to_vec(), b"h\xc3\x89"); | |
573 | test!("HİKß".to_string(), "hİKß"); | |
574 | } | |
575 | ||
576 | ||
577 | #[test] | |
578 | fn test_make_ascii_upper_case() { | |
579 | macro_rules! test { | |
580 | ($from: expr, $to: expr) => { | |
581 | { | |
582 | let mut x = $from; | |
583 | x.make_ascii_uppercase(); | |
584 | assert_eq!(x, $to); | |
585 | } | |
586 | } | |
587 | } | |
588 | test!(b'a', b'A'); | |
589 | test!(b'A', b'A'); | |
590 | test!(b'!', b'!'); | |
591 | test!('a', 'A'); | |
592 | test!('à', 'à'); | |
593 | test!('A', 'A'); | |
594 | test!('!', '!'); | |
595 | test!(b"h\xc3\xa9".to_vec(), b"H\xc3\xa9"); | |
596 | test!("hıKß".to_string(), "HıKß"); | |
597 | ||
598 | let mut x = "Hello".to_string(); | |
599 | x[..3].make_ascii_uppercase(); // Test IndexMut on String. | |
600 | assert_eq!(x, "HELlo") | |
601 | } | |
602 | ||
1a4d82fc JJ |
603 | #[test] |
604 | fn test_eq_ignore_ascii_case() { | |
605 | assert!("url()URL()uRl()Ürl".eq_ignore_ascii_case("url()url()url()Ürl")); | |
606 | assert!(!"Ürl".eq_ignore_ascii_case("ürl")); | |
607 | // Dotted capital I, Kelvin sign, Sharp S. | |
608 | assert!("HİKß".eq_ignore_ascii_case("hİKß")); | |
609 | assert!(!"İ".eq_ignore_ascii_case("i")); | |
610 | assert!(!"K".eq_ignore_ascii_case("k")); | |
611 | assert!(!"ß".eq_ignore_ascii_case("s")); | |
612 | ||
c34b1796 | 613 | for i in 0..501 { |
85aaf69f SL |
614 | let lower = if 'A' as u32 <= i && i <= 'Z' as u32 { i + 'a' as u32 - 'A' as u32 } |
615 | else { i }; | |
1a4d82fc | 616 | assert!((from_u32(i).unwrap()).to_string().eq_ignore_ascii_case( |
85aaf69f | 617 | &from_u32(lower).unwrap().to_string())); |
1a4d82fc JJ |
618 | } |
619 | } | |
620 | } |