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Removed dependency on private library
author Jacob Carlborg <doob@me.com>
date Mon, 31 May 2010 16:06:36 +0200
parents f7b078e85f7f
children 99c52d46822a
comparison
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0:f7b078e85f7f 1:11a31bd929f9
1 /** 1 /**
2 * Copyright: Copyright (c) 2010 Jacob Carlborg. 2 * Copyright: Copyright (c) 2008-2009 Jacob Carlborg. All rights reserved.
3 * Authors: Jacob Carlborg 3 * Authors: Jacob Carlborg
4 * Version: Initial created: Jan 26, 2010 4 * Version: Initial created: 2008
5 * License: $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost Software License 1.0) 5 * License: $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost Software License 1.0)
6 *
6 */ 7 */
7 module orange.util.string; 8 module orange.util.string;
8 9
9 public import mambo.string; 10 public import orange.util.collection.Array;
11
12 version (Tango)
13 {
14 static import tango.stdc.stringz;
15 import tango.text.Unicode : toFold, isDigit;
16 import tango.text.convert.Utf;
17 import tango.text.Util;
18
19 alias tango.stdc.stringz.toStringz toStringz;
20 alias tango.stdc.stringz.toString16z toString16z;
21 alias tango.stdc.stringz.toString32z toString32z;
22
23 alias tango.stdc.stringz.fromStringz fromStringz;
24 alias tango.stdc.stringz.fromString16z fromString16z;
25 alias tango.stdc.stringz.fromString32z fromString32z;
26
27 alias tango.text.convert.Utf.toString16 toString16;
28 alias tango.text.convert.Utf.toString32 toString32;
29 }
30
31 else
32 {
33 import std.string;
34 import std.utf;
35 import std.ctype : isxdigit;
36
37 version = Phobos;
38
39 private alias std.string.tolower toFold;
40
41 alias std.utf.toUTF8 toString;
42 alias std.utf.toUTF16 toString16;
43 alias std.utf.toUTF32 toString32;
44
45 alias std.string.toStringz toStringz;
46 alias std.utf.toUTF16z toString16z;
47
48 alias std.string.toString fromStringz;
49 }
50
51 version (Tango)
52 {
53 /**
54 * string alias
55 */
56 alias char[] string;
57
58 /**
59 * wstring alias
60 */
61 alias wchar[] wstring;
62
63 /**
64 * dstring alias
65 */
66 alias dchar[] dstring;
67 }
68
69 /**
70 * Compares the $(D_PSYMBOL string) to another $(D_PSYMBOL string), ignoring case
71 * considerations. Two strings are considered equal ignoring case if they are of the
72 * same length and corresponding characters in the two strings are equal ignoring case.
73 *
74 * Params:
75 * str = The $(D_PSYMBOL string) first string to compare to
76 * anotherString = The $(D_PSYMBOL string) to compare the first $(D_PSYMBOL string) with
77 *
78 * Returns: $(D_KEYWORD true) if the arguments is not $(D_KEYWORD null) and it
79 * represents an equivalent $(D_PSYMBOL string) ignoring case; $(D_KEYWORD false) otherwise
80 *
81 * Throws: AssertException if the length of any of the strings is 0
82 *
83 * See_Also: opEquals(Object)
84 */
85 bool equalsIgnoreCase (string str, string anotherString)
86 in
87 {
88 assert(str.length > 0, "mambo.string.equalsIgnoreCase: The length of the first string was 0");
89 assert(anotherString.length > 0, "mambo.string.equalsIgnoreCase: The length of the second string was 0");
90 }
91 body
92 {
93 if (str == anotherString)
94 return true;
95
96 return toFold(str) == toFold(anotherString);
97 }
98
99 /**
100 * Compares the $(D_PSYMBOL wstring) to another $(D_PSYMBOL wstring), ignoring case
101 * considerations. Two wstrings are considered equal ignoring case if they are of the
102 * same length and corresponding characters in the two wstrings are equal ignoring case.
103 *
104 * Params:
105 * str = The $(D_PSYMBOL wstring) first string to compre to
106 * anotherString = The $(D_PSYMBOL wstring) to compare the first $(D_PSYMBOL wstring) against
107 *
108 * Returns: $(D_KEYWORD true) if the argument is not $(D_KEYWORD null) and it
109 * represents an equivalent $(D_PSYMBOL wstring) ignoring case; (D_KEYWORD
110 * false) otherwise
111 *
112 * Throws: AssertException if the length of any of the wstrings is 0
113 *
114 * See_Also: opEquals(Object)
115 */
116 bool equalsIgnoreCase (wstring str, wstring anotherString)
117 in
118 {
119 assert(str.length > 0, "mambo.string.equalsIgnoreCase: The length of the first string was 0");
120 assert(anotherString.length > 0, "mambo.string.equalsIgnoreCase: The length of the second string was 0");
121 }
122 body
123 {
124 if (str == anotherString)
125 return true;
126
127 version (Tango)
128 return toFold(str) == toFold(anotherString);
129
130 else
131 return toFold(toUTF8(str)) == toFold(toUTF8(anotherString));
132 }
133
134 /**
135 * Compares the $(D_PSYMBOL dstring) to another $(D_PSYMBOL dstring), ignoring case
136 * considerations. Two wstrings are considered equal ignoring case if they are of the
137 * same length and corresponding characters in the two wstrings are equal ignoring case.
138 *
139 * Params:
140 * str = The $(D_PSYMBOL dstring) first string to compare to
141 * anotherString = The $(D_PSYMBOL wstring) to compare the first $(D_PSYMBOL dstring) against
142 *
143 * Returns: $(D_KEYWORD true) if the argument is not $(D_KEYWORD null) and it
144 * represents an equivalent $(D_PSYMBOL dstring) ignoring case; $(D_KEYWORD false) otherwise
145 *
146 * Throws: AssertException if the length of any of the dstrings are 0
147 *
148 * See_Also: opEquals(Object)
149 */
150 bool equalsIgnoreCase (dstring str, dstring anotherString)
151 in
152 {
153 assert(str.length > 0, "mambo.string.equalsIgnoreCase: The length of the first string was 0");
154 assert(anotherString.length > 0, "mambo.string.equalsIgnoreCase: The length of the second string was 0");
155 }
156 body
157 {
158 if (str == anotherString)
159 return true;
160
161 version (Tango)
162 return toFold(str) == toFold(anotherString);
163
164 else
165 return toFold(toUTF8(str)) == toFold(toUTF8(anotherString));
166 }
167
168 /**
169 * Returns the char value at the specified index. An index ranges from 0 to length - 1.
170 * The first $(D_KEYWORD char) value of the sequence is at index 0, the next at index 1,
171 * and so on, as for array indexing.
172 *
173 * Params:
174 * str = the string to get the $(D_KEYWORD char) from
175 * index = the index of the $(D_KEYWORD char) value.
176 *
177 * Returns: the $(D_KEYWORD char) value at the specified index of the string.
178 * The first $(D_KEYWORD char) value is at index 0.
179 *
180 * Throws: AssertException if the length of the string is 0
181 * Throws: AssertException if the $(D_CODE index) argument is
182 * not less than the length of the string.
183 */
184 char charAt (string str, size_t index)
185 in
186 {
187 assert(str.length > 0, "mambo.string.charAt: The length of the string was 0");
188 assert(index <= str.length, "mambo.string.charAt: The index was to greater than the length of the string");
189 }
190 body
191 {
192 return str[index];
193 }
194
195 /**
196 * Returns the $(D_KEYWORD char) value at the specified index. An index ranges from 0 to
197 * length - 1. The first $(D_KEYWORD char) value of the sequence is at index 0, the next
198 * at index 1, and so on, as for array indexing.
199 *
200 * Params:
201 * str = the wstring to get the $(D_KEYWORD char) from
202 * index = the index of the $(D_KEYWORD char) value.
203 *
204 * Returns: the $(D_KEYWORD char) value at the specified index of the wstring.
205 * The first $(D_KEYWORD char) value is at index 0.
206 *
207 * Throws: AssertException if the length of the wstring is 0
208 * Throws: AssertException if the $(D_CODE index) argument is
209 * not less than the length of the wstring.
210 */
211 wchar charAt (wstring str, size_t index)
212 in
213 {
214 assert(str.length > 0, "mambo.string.charAt: The length of the string was 0");
215 assert(index <= str.length, "mambo.string.charAt: The index was to greater than the length of the string");
216 }
217 body
218 {
219 return str[index];
220 }
221
222 /**
223 * Returns the $(D_KEYWORD char) value at the specified index. An index ranges from 0 to
224 * length - 1. The first $(D_KEYWORD char) value of the sequence is at index 0, the next
225 * at index 1, and so on, as for array indexing.
226 *
227 * Params:
228 * str = the dstring to get the $(D_KEYWORD char) from
229 * index = the index of the $(D_KEYWORD char) value.
230 *
231 * Returns: the $(D_KEYWORD char) value at the specified index of the dstring.
232 * The first $(D_KEYWORD char) value is at index 0.
233 *
234 * Throws: AssertException if the length of the dstring is 0
235 * Throws: AssertException if the $(D_CODE index) argument is
236 * not less than the length of the dstring.
237 */
238 dchar charAt (dstring str, size_t index)
239 in
240 {
241 assert(str.length > 0, "mambo.string.charAt: The length of the string was 0");
242 assert(index <= str.length, "mambo.string.charAt: The index was to greater than the length of the string");
243 }
244 body
245 {
246 return str[index];
247 }
248
249 /**
250 * Returns a new string that is a substring of the specified string. The substring begins
251 * at the specified $(D_PARAM beginIndex) and extends to the character at index
252 * $(D_PARAM endIndex) - 1. Thus the length of the substring is $(D_PARAM endIndex - beginIndex).
253 *
254 * Examples:
255 * ---
256 * "hamburger".substring(4, 8) returns "urge"
257 * "smiles".substring(1, 5) returns "mile"
258 * ---
259 *
260 * Params:
261 * str = the string to get the substring from
262 * beginIndex = the beginning index, inclusive.
263 * endIndex = the ending index, exclusive.
264 *
265 * Returns: the specified substring.
266 *
267 * Throws: AssertException if the length of the string is 0
268 * Throws: AssertException if the $(D_PARAM beginIndex) is
269 * larger than $(D_PARAM endIndex).
270 * Throws: AssertException if $(D_PARAM endIndex) is larger than the
271 * length of the $(D_PSYMBOL string).
272 */
273 string substring (string str, size_t beginIndex, size_t endIndex)
274 in
275 {
276 assert(str.length > 0, "mambo.string.substring: The length of the string was 0");
277 assert(beginIndex < endIndex, "mambo.string.substring: The first index was greater the second");
278 assert(endIndex <= str.length, "mambo.string.substring: The second index was greater then the length of the string");
279 }
280 body
281 {
282 return str[beginIndex .. endIndex].dup;
283 }
284
285 /**
286 * Returns a new string that is a substring of the specified string. The substring begins
287 * at the specified $(D_PARAM beginIndex) and extends to the character at index
288 * $(D_PARAM endIndex) - 1. Thus the length of the substring is $(D_PARAM endIndex - beginIndex).
289 *
290 * Examples:
291 * ---
292 * "hamburger".substring(4, 8) returns "urge"
293 * "smiles".substring(1, 5) returns "mile"
294 * ---
295 *
296 * Params:
297 * str = the string to get the substring from
298 * beginIndex = the beginning index, inclusive.
299 * endIndex = the ending index, exclusive.
300 *
301 * Returns: the specified substring.
302 *
303 * Throws: AssertException if the length of the string is 0
304 * Throws: AssertException if the $(D_PARAM beginIndex) is
305 * larger than $(D_PARAM endIndex).
306 * Throws: AssertException if $(D_PARAM endIndex) is larger than the
307 * length of the $(D_PSYMBOL string).
308 */
309 wstring substring (wstring str, size_t beginIndex, size_t endIndex)
310 in
311 {
312 assert(str.length > 0, "mambo.string.substring: The length of the string was 0");
313 assert(beginIndex < endIndex, "mambo.string.substring: The first index was greater the second");
314 assert(endIndex <= str.length, "mambo.string.substring: The second index was greater then the length of the string");
315 }
316 body
317 {
318 return str[beginIndex .. endIndex].dup;
319 }
320
321 /**
322 * Returns a new string that is a substring of the specified string. The substring begins
323 * at the specified $(D_PARAM beginIndex) and extends to the character at index
324 * $(D_PARAM endIndex) - 1. Thus the length of the substring is $(D_PARAM endIndex - beginIndex).
325 *
326 * Examples:
327 * ---
328 * "hamburger".substring(4, 8) returns "urge"
329 * "smiles".substring(1, 5) returns "mile"
330 * ---
331 *
332 * Params:
333 * str = the string to get the substring from
334 * beginIndex = the beginning index, inclusive.
335 * endIndex = the ending index, exclusive.
336 *
337 * Returns: the specified substring.
338 *
339 * Throws: AssertException if the length of the string is 0
340 * Throws: AssertException if the $(D_PARAM beginIndex) is
341 * larger than $(D_PARAM endIndex).
342 * Throws: AssertException if $(D_PARAM endIndex) is larger than the
343 * length of the $(D_PSYMBOL string).
344 */
345 dstring substring (dstring str, size_t beginIndex, size_t endIndex)
346 in
347 {
348 assert(str.length > 0, "mambo.string.substring: The length of the string was 0");
349 assert(beginIndex < endIndex, "mambo.string.substring: The first index was greater the second");
350 assert(endIndex <= str.length, "mambo.string.substring: The second index was greater then the length of the string");
351 }
352 body
353 {
354 return str[beginIndex .. endIndex].dup;
355 }
356
357 /**
358 * Returns a new string that is a substring of the specified string. The substring begins
359 * with the character at the specified index and extends to the end of the string.
360 *
361 * Examples:
362 * ---
363 * "unhappy".substring(2) returns "happy"
364 * "Harbison".substring(3) returns "bison"
365 * "emptiness".substring(9) returns "" (an empty string)
366 * ---
367 *
368 * Params:
369 * str = the string to get the substring from
370 * beginIndex = the beginning index, inclusive
371 *
372 * Returns: the specified substring
373 *
374 * Throws: AssertException if the length of the string is 0
375 * Throws: AssertException if the $(D_PARAM beginIndex) is
376 * larger than the length of the string.
377 */
378 string substring (string str, size_t index)
379 in
380 {
381 assert(str.length > 0, "mambo.string.substring: The length of the string was 0");
382 assert(index < str.length, "mambo.string.substring: The index was greater than the length of the string");
383 }
384 body
385 {
386 return str.substring(index, str.length);
387 }
388
389 /**
390 * Returns a new string that is a substring of the specified string. The substring begins
391 * with the character at the specified index and extends to the end of the string.
392 *
393 * Examples:
394 * ---
395 * "unhappy".substring(2) returns "happy"
396 * "Harbison".substring(3) returns "bison"
397 * "emptiness".substring(9) returns "" (an empty string)
398 * ---
399 *
400 * Params:
401 * str = the string to get the substring from
402 * beginIndex = the beginning index, inclusive
403 *
404 * Returns: the specified substring
405 *
406 * Throws: AssertException if the length of the string is 0
407 * Throws: AssertException if the $(D_PARAM beginIndex) is
408 * larger than the length of the string.
409 */
410 wstring substring (wstring str, size_t index)
411 in
412 {
413 assert(str.length > 0, "mambo.string.substring: The length of the string was 0");
414 assert(index < str.length, "mambo.string.substring: The index was greater than the length of the string");
415 }
416 body
417 {
418 return str.substring(index, str.length);
419 }
420
421 /**
422 * Returns a new string that is a substring of the specified string. The substring begins
423 * with the character at the specified index and extends to the end of the string.
424 *
425 * Examples:
426 * ---
427 * "unhappy".substring(2) returns "happy"
428 * "Harbison".substring(3) returns "bison"
429 * "emptiness".substring(9) returns "" (an empty string)
430 * ---
431 *
432 * Params:
433 * str = the string to get the substring from
434 * beginIndex = the beginning index, inclusive
435 *
436 * Returns: the specified substring
437 *
438 * Throws: AssertException if the length of the string is 0
439 * Throws: AssertException if the $(D_PARAM beginIndex) is
440 * larger than the length of the string.
441 */
442 dstring substring (dstring str, size_t index)
443 in
444 {
445 assert(str.length > 0, "mambo.string.substring: The length of the string was 0");
446 assert(index < str.length, "mambo.string.substring: The index was greater than the length of the string");
447 }
448 body
449 {
450 return str.substring(index, str.length);
451 }
452
453 /**
454 * Returns a new string that is a substring of the given string.
455 *
456 * This substring is the character sequence that starts at character
457 * position pos and has a length of n characters.
458 *
459 * Params:
460 * str = the string to get the substring from
461 * pos = position of a character in the current string to be used
462 * as starting character for the substring.
463 * n = Length of the substring. If this value would make the
464 * substring to span past the end of the current string content,
465 * only those characters until the end of the string are used.
466 * size_t.max is the greatest possible value for an element of
467 * type size_t, therefore, when this value is used, all the
468 * characters between pos and the end of the string are used as
469 * the initialization substring.
470 *
471 * Returns: a string containing a substring of the given string
472 *
473 * Throws: AssertException if pos is greater than the length of the string
474 */
475 string substr (string str, size_t pos = 0, size_t n = size_t.max)
476 in
477 {
478 assert(pos < str.length, "mambo.string.substr: The given position was greater than the length of the string.");
479 }
480 body
481 {
482 size_t end;
483
484 if (n == size_t.max)
485 end = str.length;
486
487 else
488 {
489 end = pos + n;
490
491 if (end > str.length)
492 end = str.length;
493 }
494
495 return str[pos .. end].dup;
496 }
497
498 /**
499 * Returns a new string that is a substring of the given string.
500 *
501 * This substring is the character sequence that starts at character
502 * position pos and has a length of n characters.
503 *
504 * Params:
505 * str = the string to get the substring from
506 * pos = position of a character in the current string to be used
507 * as starting character for the substring.
508 * n = Length of the substring. If this value would make the
509 * substring to span past the end of the current string content,
510 * only those characters until the end of the string are used.
511 * size_t.max is the greatest possible value for an element of
512 * type size_t, therefore, when this value is used, all the
513 * characters between pos and the end of the string are used as
514 * the initialization substring.
515 *
516 * Returns: a string containing a substring of the given string
517 *
518 * Throws: AssertException if pos is greater than the length of the string
519 */
520 wstring substr (wstring str, size_t pos = 0, size_t n = size_t.max)
521 in
522 {
523 assert(pos < str.length, "mambo.string.substr: The given position was greater than the length of the string.");
524 }
525 body
526 {
527 size_t end;
528
529 if (n == size_t.max)
530 end = str.length;
531
532 else
533 {
534 end = pos + n;
535
536 if (end > str.length)
537 end = str.length;
538 }
539
540 return str[pos .. end].dup;
541 }
542
543 /**
544 * Returns a new string that is a substring of the given string.
545 *
546 * This substring is the character sequence that starts at character
547 * position pos and has a length of n characters.
548 *
549 * Params:
550 * str = the string to get the substring from
551 * pos = position of a character in the current string to be used
552 * as starting character for the substring.
553 * n = Length of the substring. If this value would make the
554 * substring to span past the end of the current string content,
555 * only those characters until the end of the string are used.
556 * size_t.max is the greatest possible value for an element of
557 * type size_t, therefore, when this value is used, all the
558 * characters between pos and the end of the string are used as
559 * the initialization substring.
560 *
561 * Returns: a string containing a substring of the given string
562 *
563 * Throws: AssertException if pos is greater than the length of the string
564 */
565 dstring substr (dstring str, size_t pos = 0, size_t n = size_t.max)
566 in
567 {
568 assert(pos < str.length, "mambo.string.substr: The given position was greater than the length of the string.");
569 }
570 body
571 {
572 size_t end;
573
574 if (n == size_t.max)
575 end = str.length;
576
577 else
578 {
579 end = pos + n;
580
581 if (end > str.length)
582 end = str.length;
583 }
584
585 return str[pos .. end].dup;
586 }
587
588 /**
589 * Finds the first occurence of sub in str
590 *
591 * Params:
592 * str = the string to find in
593 * sub = the substring to find
594 * start = where to start finding
595 *
596 * Returns: the index of the substring or size_t.max when nothing was found
597 */
598 size_t find (string str, string sub, size_t start = 0)
599 {
600 version (Tango)
601 {
602 size_t index = str.locatePattern(sub, start);
603
604 if (index == str.length)
605 return size_t.max;
606
607 return index;
608 }
609
610 else
611 return std.string.find(str, sub, start);
612 }
613
614 /**
615 * Finds the first occurence of sub in str
616 *
617 * Params:
618 * str = the string to find in
619 * sub = the substring to find
620 * start = where to start finding
621 *
622 * Returns: the index of the substring or size_t.max when nothing was found
623 */
624 size_t find (wstring str, wstring sub, size_t start = 0)
625 {
626 version (Tango)
627 {
628 size_t index = str.locatePattern(sub, start);
629
630 if (index == str.length)
631 return size_t.max;
632
633 return index;
634 }
635
636 else
637 return std.string.find(str, sub, start);
638 }
639
640 /**
641 * Finds the first occurence of sub in str
642 *
643 * Params:
644 * str = the string to find in
645 * sub = the substring to find
646 * start = where to start finding
647 *
648 * Returns: the index of the substring or size_t.max when nothing was found
649 */
650 size_t find (dstring str, dstring sub, size_t start = 0)
651 {
652 version (Tango)
653 {
654 size_t index = str.locatePattern(sub, start);
655
656 if (index == str.length)
657 return size_t.max;
658
659 return index;
660 }
661
662 else
663 return std.string.find(str, sub, start);
664 }
665
666 /**
667 * Compares to strings, ignoring case differences. Returns 0 if the content
668 * matches, less than zero if a is "less" than b, or greater than zero
669 * where a is "bigger".
670 *
671 * Params:
672 * a = the first array
673 * b = the second array
674 * end = the index where the comparision will end
675 *
676 * Returns: Returns 0 if the content matches, less than zero if a is
677 * "less" than b, or greater than zero where a is "bigger".
678 *
679 * See_Also: mambo.collection.array.compare
680 */
681 int compareIgnoreCase (U = size_t) (string a, string b, U end = U.max)
682 {
683 return a.toFold().compare(b.toFold(), end);
684 }
685
686 /**
687 * Compares to strings, ignoring case differences. Returns 0 if the content
688 * matches, less than zero if a is "less" than b, or greater than zero
689 * where a is "bigger".
690 *
691 * Params:
692 * a = the first array
693 * b = the second array
694 * end = the index where the comparision will end
695 *
696 * Returns: Returns 0 if the content matches, less than zero if a is
697 * "less" than b, or greater than zero where a is "bigger".
698 *
699 * See_Also: mambo.collection.array.compare
700 */
701 int compareIgnoreCase (U = size_t) (wstring a, wstring b, U end = U.max)
702 {
703 return a.toFold().compare(b.toFold(), end);
704 }
705
706 /**
707 * Compares to strings, ignoring case differences. Returns 0 if the content
708 * matches, less than zero if a is "less" than b, or greater than zero
709 * where a is "bigger".
710 *
711 * Params:
712 * a = the first array
713 * b = the second array
714 * end = the index where the comparision will end
715 *
716 * Returns: Returns 0 if the content matches, less than zero if a is
717 * "less" than b, or greater than zero where a is "bigger".
718 *
719 * See_Also: mambo.collection.array.compare
720 */
721 int compareIgnoreCase (U = size_t) (dstring a, dstring b, U end = U.max)
722 {
723 return a.toFold().compare(b.toFold(), end);
724 }
725
726 /**
727 * Compares to strings, ignoring case differences. Returns 0 if the content
728 * matches, less than zero if a is "less" than b, or greater than zero
729 * where a is "bigger".
730 *
731 * Params:
732 * a = the first array
733 * b = the second array
734 * end = the index where the comparision will end
735 *
736 * Returns: Returns 0 if the content matches, less than zero if a is
737 * "less" than b, or greater than zero where a is "bigger".
738 *
739 * See_Also: mambo.string.compareIgnoreCase
740 */
741 alias compareIgnoreCase icompare;
742
743 /**
744 * Checks if the given character is a hexdecimal digit character.
745 * Hexadecimal digits are any of: 0 1 2 3 4 5 6 7 8 9 a b c d e f A B C D E F
746 *
747 * Params:
748 * ch = the character to be checked
749 *
750 * Returns: true if the given character is a hexdecimal digit character otherwise false
751 */
752 bool isHexDigit (dchar ch)
753 {
754 version (Tango)
755 {
756 switch (ch)
757 {
758 case 'A': return true;
759 case 'B': return true;
760 case 'C': return true;
761 case 'D': return true;
762 case 'E': return true;
763 case 'F': return true;
764
765 case 'a': return true;
766 case 'b': return true;
767 case 'c': return true;
768 case 'd': return true;
769 case 'e': return true;
770 case 'f': return true;
771
772 default: break;
773 }
774
775 if (isDigit(ch))
776 return true;
777 }
778
779 else
780 if (isxdigit(ch) != 0)
781 return true;
782
783 return false;
784 }
785
786 /*version (Tango)
787 {
788 string toString (string str)
789 {
790 return str;
791 }
792
793 string toString (wstring str)
794 {
795 return tango.text.convert.Utf.toString(str);
796 }
797
798 string toString (dstring str)
799 {
800 return tango.text.convert.Utf.toString(str);
801 }
802 }*/
803
804 version (Phobos)
805 {
806 /**
807 * Converts the given string to C-style 0 terminated string.
808 *
809 * Params:
810 * str = the string to convert
811 *
812 * Returns: the a C-style 0 terminated string.
813 */
814 dchar* toString32z (dstring str)
815 {
816 return (str ~ '\0').ptr;
817 }
818
819 /**
820 * Converts a C-style 0 terminated string to a wstring
821 *
822 * Params:
823 * str = the C-style 0 terminated string
824 *
825 * Returns: the converted wstring
826 */
827 wstring fromString16z (wchar* str)
828 {
829 return str[0 .. strlen(str)];
830 }
831
832 /**
833 * Converts a C-style 0 terminated string to a dstring
834 * Params:
835 * str = the C-style 0 terminated string
836 *
837 * Returns: the converted dstring
838 */
839 dstring fromString32z (dchar* str)
840 {
841 return str[0 .. strlen(str)];
842 }
843
844 /**
845 * Gets the length of the given C-style 0 terminated string
846 *
847 * Params:
848 * str = the C-style 0 terminated string to get the length of
849 *
850 * Returns: the length of the string
851 */
852 size_t strlen (wchar* str)
853 {
854 size_t i = 0;
855
856 if (str)
857 while(*str++)
858 ++i;
859
860 return i;
861 }
862
863 /**
864 * Gets the length of the given C-style 0 terminated string
865 *
866 * Params:
867 * str = the C-style 0 terminated string to get the length of
868 *
869 * Returns: the length of the string
870 */
871 size_t strlen (dchar* str)
872 {
873 size_t i = 0;
874
875 if (str)
876 while(*str++)
877 ++i;
878
879 return i;
880 }
881 }