1 | /** @file
|
---|
2 | * IPRT - C++ string class.
|
---|
3 | */
|
---|
4 |
|
---|
5 | /*
|
---|
6 | * Copyright (C) 2007-2016 Oracle Corporation
|
---|
7 | *
|
---|
8 | * This file is part of VirtualBox Open Source Edition (OSE), as
|
---|
9 | * available from http://www.virtualbox.org. This file is free software;
|
---|
10 | * you can redistribute it and/or modify it under the terms of the GNU
|
---|
11 | * General Public License (GPL) as published by the Free Software
|
---|
12 | * Foundation, in version 2 as it comes in the "COPYING" file of the
|
---|
13 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
---|
14 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
---|
15 | *
|
---|
16 | * The contents of this file may alternatively be used under the terms
|
---|
17 | * of the Common Development and Distribution License Version 1.0
|
---|
18 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
|
---|
19 | * VirtualBox OSE distribution, in which case the provisions of the
|
---|
20 | * CDDL are applicable instead of those of the GPL.
|
---|
21 | *
|
---|
22 | * You may elect to license modified versions of this file under the
|
---|
23 | * terms and conditions of either the GPL or the CDDL or both.
|
---|
24 | */
|
---|
25 |
|
---|
26 | #ifndef ___iprt_cpp_ministring_h
|
---|
27 | #define ___iprt_cpp_ministring_h
|
---|
28 |
|
---|
29 | #include <iprt/mem.h>
|
---|
30 | #include <iprt/string.h>
|
---|
31 | #include <iprt/stdarg.h>
|
---|
32 | #include <iprt/cpp/list.h>
|
---|
33 |
|
---|
34 | #include <new>
|
---|
35 |
|
---|
36 |
|
---|
37 | /** @defgroup grp_rt_cpp_string C++ String support
|
---|
38 | * @ingroup grp_rt_cpp
|
---|
39 | * @{
|
---|
40 | */
|
---|
41 |
|
---|
42 | /** @brief C++ string class.
|
---|
43 | *
|
---|
44 | * This is a C++ string class that does not depend on anything else except IPRT
|
---|
45 | * memory management functions. Semantics are like in std::string, except it
|
---|
46 | * can do a lot less.
|
---|
47 | *
|
---|
48 | * Note that RTCString does not differentiate between NULL strings
|
---|
49 | * and empty strings. In other words, RTCString("") and RTCString(NULL)
|
---|
50 | * behave the same. In both cases, RTCString allocates no memory, reports
|
---|
51 | * a zero length and zero allocated bytes for both, and returns an empty
|
---|
52 | * C-style string from c_str().
|
---|
53 | *
|
---|
54 | * @note RTCString ASSUMES that all strings it deals with are valid UTF-8.
|
---|
55 | * The caller is responsible for not breaking this assumption.
|
---|
56 | */
|
---|
57 | #ifdef VBOX
|
---|
58 | /** @remarks Much of the code in here used to be in com::Utf8Str so that
|
---|
59 | * com::Utf8Str can now derive from RTCString and only contain code
|
---|
60 | * that is COM-specific, such as com::Bstr conversions. Compared to
|
---|
61 | * the old Utf8Str though, RTCString always knows the length of its
|
---|
62 | * member string and the size of the buffer so it can use memcpy()
|
---|
63 | * instead of strdup().
|
---|
64 | */
|
---|
65 | #endif
|
---|
66 | class RT_DECL_CLASS RTCString
|
---|
67 | {
|
---|
68 | public:
|
---|
69 | /**
|
---|
70 | * Creates an empty string that has no memory allocated.
|
---|
71 | */
|
---|
72 | RTCString()
|
---|
73 | : m_psz(NULL),
|
---|
74 | m_cch(0),
|
---|
75 | m_cbAllocated(0)
|
---|
76 | {
|
---|
77 | }
|
---|
78 |
|
---|
79 | /**
|
---|
80 | * Creates a copy of another RTCString.
|
---|
81 | *
|
---|
82 | * This allocates s.length() + 1 bytes for the new instance, unless s is empty.
|
---|
83 | *
|
---|
84 | * @param a_rSrc The source string.
|
---|
85 | *
|
---|
86 | * @throws std::bad_alloc
|
---|
87 | */
|
---|
88 | RTCString(const RTCString &a_rSrc)
|
---|
89 | {
|
---|
90 | copyFromN(a_rSrc.m_psz, a_rSrc.m_cch);
|
---|
91 | }
|
---|
92 |
|
---|
93 | /**
|
---|
94 | * Creates a copy of a C-style string.
|
---|
95 | *
|
---|
96 | * This allocates strlen(pcsz) + 1 bytes for the new instance, unless s is empty.
|
---|
97 | *
|
---|
98 | * @param pcsz The source string.
|
---|
99 | *
|
---|
100 | * @throws std::bad_alloc
|
---|
101 | */
|
---|
102 | RTCString(const char *pcsz)
|
---|
103 | {
|
---|
104 | copyFromN(pcsz, pcsz ? strlen(pcsz) : 0);
|
---|
105 | }
|
---|
106 |
|
---|
107 | /**
|
---|
108 | * Create a partial copy of another RTCString.
|
---|
109 | *
|
---|
110 | * @param a_rSrc The source string.
|
---|
111 | * @param a_offSrc The byte offset into the source string.
|
---|
112 | * @param a_cchSrc The max number of chars (encoded UTF-8 bytes)
|
---|
113 | * to copy from the source string.
|
---|
114 | */
|
---|
115 | RTCString(const RTCString &a_rSrc, size_t a_offSrc, size_t a_cchSrc = npos)
|
---|
116 | {
|
---|
117 | if (a_offSrc < a_rSrc.m_cch)
|
---|
118 | copyFromN(&a_rSrc.m_psz[a_offSrc], RT_MIN(a_cchSrc, a_rSrc.m_cch - a_offSrc));
|
---|
119 | else
|
---|
120 | {
|
---|
121 | m_psz = NULL;
|
---|
122 | m_cch = 0;
|
---|
123 | m_cbAllocated = 0;
|
---|
124 | }
|
---|
125 | }
|
---|
126 |
|
---|
127 | /**
|
---|
128 | * Create a partial copy of a C-style string.
|
---|
129 | *
|
---|
130 | * @param a_pszSrc The source string (UTF-8).
|
---|
131 | * @param a_cchSrc The max number of chars (encoded UTF-8 bytes)
|
---|
132 | * to copy from the source string. This must not
|
---|
133 | * be '0' as the compiler could easily mistake
|
---|
134 | * that for the va_list constructor.
|
---|
135 | */
|
---|
136 | RTCString(const char *a_pszSrc, size_t a_cchSrc)
|
---|
137 | {
|
---|
138 | size_t cchMax = a_pszSrc ? RTStrNLen(a_pszSrc, a_cchSrc) : 0;
|
---|
139 | copyFromN(a_pszSrc, RT_MIN(a_cchSrc, cchMax));
|
---|
140 | }
|
---|
141 |
|
---|
142 | /**
|
---|
143 | * Create a string containing @a a_cTimes repetitions of the character @a
|
---|
144 | * a_ch.
|
---|
145 | *
|
---|
146 | * @param a_cTimes The number of times the character is repeated.
|
---|
147 | * @param a_ch The character to fill the string with.
|
---|
148 | */
|
---|
149 | RTCString(size_t a_cTimes, char a_ch)
|
---|
150 | : m_psz(NULL),
|
---|
151 | m_cch(0),
|
---|
152 | m_cbAllocated(0)
|
---|
153 | {
|
---|
154 | Assert((unsigned)a_ch < 0x80);
|
---|
155 | if (a_cTimes)
|
---|
156 | {
|
---|
157 | reserve(a_cTimes + 1);
|
---|
158 | memset(m_psz, a_ch, a_cTimes);
|
---|
159 | m_psz[a_cTimes] = '\0';
|
---|
160 | m_cch = a_cTimes;
|
---|
161 | }
|
---|
162 | }
|
---|
163 |
|
---|
164 | /**
|
---|
165 | * Create a new string given the format string and its arguments.
|
---|
166 | *
|
---|
167 | * @param a_pszFormat Pointer to the format string (UTF-8),
|
---|
168 | * @see pg_rt_str_format.
|
---|
169 | * @param a_va Argument vector containing the arguments
|
---|
170 | * specified by the format string.
|
---|
171 | * @sa printfV
|
---|
172 | * @remarks Not part of std::string.
|
---|
173 | */
|
---|
174 | RTCString(const char *a_pszFormat, va_list a_va) RT_IPRT_FORMAT_ATTR(1, 0)
|
---|
175 | : m_psz(NULL),
|
---|
176 | m_cch(0),
|
---|
177 | m_cbAllocated(0)
|
---|
178 | {
|
---|
179 | printfV(a_pszFormat, a_va);
|
---|
180 | }
|
---|
181 |
|
---|
182 | /**
|
---|
183 | * Destructor.
|
---|
184 | */
|
---|
185 | virtual ~RTCString()
|
---|
186 | {
|
---|
187 | cleanup();
|
---|
188 | }
|
---|
189 |
|
---|
190 | /**
|
---|
191 | * String length in bytes.
|
---|
192 | *
|
---|
193 | * Returns the length of the member string in bytes, which is equal to strlen(c_str()).
|
---|
194 | * In other words, this does not count unicode codepoints; use utf8length() for that.
|
---|
195 | * The byte length is always cached so calling this is cheap and requires no
|
---|
196 | * strlen() invocation.
|
---|
197 | *
|
---|
198 | * @returns m_cbLength.
|
---|
199 | */
|
---|
200 | size_t length() const
|
---|
201 | {
|
---|
202 | return m_cch;
|
---|
203 | }
|
---|
204 |
|
---|
205 | /**
|
---|
206 | * String length in unicode codepoints.
|
---|
207 | *
|
---|
208 | * As opposed to length(), which returns the length in bytes, this counts
|
---|
209 | * the number of unicode codepoints. This is *not* cached so calling this
|
---|
210 | * is expensive.
|
---|
211 | *
|
---|
212 | * @returns Number of codepoints in the member string.
|
---|
213 | */
|
---|
214 | size_t uniLength() const
|
---|
215 | {
|
---|
216 | return m_psz ? RTStrUniLen(m_psz) : 0;
|
---|
217 | }
|
---|
218 |
|
---|
219 | /**
|
---|
220 | * The allocated buffer size (in bytes).
|
---|
221 | *
|
---|
222 | * Returns the number of bytes allocated in the internal string buffer, which is
|
---|
223 | * at least length() + 1 if length() > 0; for an empty string, this returns 0.
|
---|
224 | *
|
---|
225 | * @returns m_cbAllocated.
|
---|
226 | */
|
---|
227 | size_t capacity() const
|
---|
228 | {
|
---|
229 | return m_cbAllocated;
|
---|
230 | }
|
---|
231 |
|
---|
232 | /**
|
---|
233 | * Make sure at that least cb of buffer space is reserved.
|
---|
234 | *
|
---|
235 | * Requests that the contained memory buffer have at least cb bytes allocated.
|
---|
236 | * This may expand or shrink the string's storage, but will never truncate the
|
---|
237 | * contained string. In other words, cb will be ignored if it's smaller than
|
---|
238 | * length() + 1.
|
---|
239 | *
|
---|
240 | * @param cb New minimum size (in bytes) of member memory buffer.
|
---|
241 | *
|
---|
242 | * @throws std::bad_alloc On allocation error. The object is left unchanged.
|
---|
243 | */
|
---|
244 | void reserve(size_t cb)
|
---|
245 | {
|
---|
246 | if ( cb != m_cbAllocated
|
---|
247 | && cb > m_cch + 1
|
---|
248 | )
|
---|
249 | {
|
---|
250 | int rc = RTStrRealloc(&m_psz, cb);
|
---|
251 | if (RT_SUCCESS(rc))
|
---|
252 | m_cbAllocated = cb;
|
---|
253 | #ifdef RT_EXCEPTIONS_ENABLED
|
---|
254 | else
|
---|
255 | throw std::bad_alloc();
|
---|
256 | #endif
|
---|
257 | }
|
---|
258 | }
|
---|
259 |
|
---|
260 | /**
|
---|
261 | * A C like version of the reserve method, i.e. return code instead of throw.
|
---|
262 | *
|
---|
263 | * @returns VINF_SUCCESS or VERR_NO_STRING_MEMORY.
|
---|
264 | * @param cb New minimum size (in bytes) of member memory buffer.
|
---|
265 | */
|
---|
266 | int reserveNoThrow(size_t cb)
|
---|
267 | {
|
---|
268 | if ( cb != m_cbAllocated
|
---|
269 | && cb > m_cch + 1
|
---|
270 | )
|
---|
271 | {
|
---|
272 | int rc = RTStrRealloc(&m_psz, cb);
|
---|
273 | if (RT_SUCCESS(rc))
|
---|
274 | m_cbAllocated = cb;
|
---|
275 | else
|
---|
276 | return rc;
|
---|
277 | }
|
---|
278 | return VINF_SUCCESS;
|
---|
279 | }
|
---|
280 |
|
---|
281 | /**
|
---|
282 | * Deallocates all memory.
|
---|
283 | */
|
---|
284 | inline void setNull()
|
---|
285 | {
|
---|
286 | cleanup();
|
---|
287 | }
|
---|
288 |
|
---|
289 | RTMEMEF_NEW_AND_DELETE_OPERATORS();
|
---|
290 |
|
---|
291 | /**
|
---|
292 | * Assigns a copy of pcsz to @a this.
|
---|
293 | *
|
---|
294 | * @param pcsz The source string.
|
---|
295 | *
|
---|
296 | * @throws std::bad_alloc On allocation failure. The object is left describing
|
---|
297 | * a NULL string.
|
---|
298 | *
|
---|
299 | * @returns Reference to the object.
|
---|
300 | */
|
---|
301 | RTCString &operator=(const char *pcsz)
|
---|
302 | {
|
---|
303 | if (m_psz != pcsz)
|
---|
304 | {
|
---|
305 | cleanup();
|
---|
306 | copyFromN(pcsz, pcsz ? strlen(pcsz) : 0);
|
---|
307 | }
|
---|
308 | return *this;
|
---|
309 | }
|
---|
310 |
|
---|
311 | /**
|
---|
312 | * Assigns a copy of s to @a this.
|
---|
313 | *
|
---|
314 | * @param s The source string.
|
---|
315 | *
|
---|
316 | * @throws std::bad_alloc On allocation failure. The object is left describing
|
---|
317 | * a NULL string.
|
---|
318 | *
|
---|
319 | * @returns Reference to the object.
|
---|
320 | */
|
---|
321 | RTCString &operator=(const RTCString &s)
|
---|
322 | {
|
---|
323 | if (this != &s)
|
---|
324 | {
|
---|
325 | cleanup();
|
---|
326 | copyFromN(s.m_psz, s.m_cch);
|
---|
327 | }
|
---|
328 | return *this;
|
---|
329 | }
|
---|
330 |
|
---|
331 | /**
|
---|
332 | * Assigns a copy of another RTCString.
|
---|
333 | *
|
---|
334 | * @param a_rSrc Reference to the source string.
|
---|
335 | * @throws std::bad_alloc On allocation error. The object is left unchanged.
|
---|
336 | */
|
---|
337 | RTCString &assign(const RTCString &a_rSrc);
|
---|
338 |
|
---|
339 | /**
|
---|
340 | * Assigns a copy of a C-style string.
|
---|
341 | *
|
---|
342 | * @param a_pszSrc Pointer to the C-style source string.
|
---|
343 | * @throws std::bad_alloc On allocation error. The object is left unchanged.
|
---|
344 | * @remarks ASSUMES valid
|
---|
345 | */
|
---|
346 | RTCString &assign(const char *a_pszSrc);
|
---|
347 |
|
---|
348 | /**
|
---|
349 | * Assigns a partial copy of another RTCString.
|
---|
350 | *
|
---|
351 | * @param a_rSrc The source string.
|
---|
352 | * @param a_offSrc The byte offset into the source string.
|
---|
353 | * @param a_cchSrc The max number of chars (encoded UTF-8 bytes)
|
---|
354 | * to copy from the source string.
|
---|
355 | */
|
---|
356 | RTCString &assign(const RTCString &a_rSrc, size_t a_offSrc, size_t a_cchSrc = npos);
|
---|
357 |
|
---|
358 | /**
|
---|
359 | * Assigns a partial copy of a C-style string.
|
---|
360 | *
|
---|
361 | * @param a_pszSrc The source string (UTF-8).
|
---|
362 | * @param a_cchSrc The max number of chars (encoded UTF-8 bytes)
|
---|
363 | * to copy from the source string.
|
---|
364 | */
|
---|
365 | RTCString &assign(const char *a_pszSrc, size_t a_cchSrc);
|
---|
366 |
|
---|
367 | /**
|
---|
368 | * Assigs a string containing @a a_cTimes repetitions of the character @a a_ch.
|
---|
369 | *
|
---|
370 | * @param a_cTimes The number of times the character is repeated.
|
---|
371 | * @param a_ch The character to fill the string with.
|
---|
372 | */
|
---|
373 | RTCString &assign(size_t a_cTimes, char a_ch);
|
---|
374 |
|
---|
375 | /**
|
---|
376 | * Assigns the output of the string format operation (RTStrPrintf).
|
---|
377 | *
|
---|
378 | * @param pszFormat Pointer to the format string,
|
---|
379 | * @see pg_rt_str_format.
|
---|
380 | * @param ... Ellipsis containing the arguments specified by
|
---|
381 | * the format string.
|
---|
382 | *
|
---|
383 | * @throws std::bad_alloc On allocation error. The object is left unchanged.
|
---|
384 | *
|
---|
385 | * @returns Reference to the object.
|
---|
386 | */
|
---|
387 | RTCString &printf(const char *pszFormat, ...) RT_IPRT_FORMAT_ATTR(1, 2);
|
---|
388 |
|
---|
389 | /**
|
---|
390 | * Assigns the output of the string format operation (RTStrPrintfV).
|
---|
391 | *
|
---|
392 | * @param pszFormat Pointer to the format string,
|
---|
393 | * @see pg_rt_str_format.
|
---|
394 | * @param va Argument vector containing the arguments
|
---|
395 | * specified by the format string.
|
---|
396 | *
|
---|
397 | * @throws std::bad_alloc On allocation error. The object is left unchanged.
|
---|
398 | *
|
---|
399 | * @returns Reference to the object.
|
---|
400 | */
|
---|
401 | RTCString &printfV(const char *pszFormat, va_list va) RT_IPRT_FORMAT_ATTR(1, 0);
|
---|
402 |
|
---|
403 | /**
|
---|
404 | * Appends the string @a that to @a rThat.
|
---|
405 | *
|
---|
406 | * @param rThat The string to append.
|
---|
407 | * @throws std::bad_alloc On allocation error. The object is left unchanged.
|
---|
408 | * @returns Reference to the object.
|
---|
409 | */
|
---|
410 | RTCString &append(const RTCString &rThat);
|
---|
411 |
|
---|
412 | /**
|
---|
413 | * Appends the string @a pszSrc to @a this.
|
---|
414 | *
|
---|
415 | * @param pszSrc The C-style string to append.
|
---|
416 | * @throws std::bad_alloc On allocation error. The object is left unchanged.
|
---|
417 | * @returns Reference to the object.
|
---|
418 | */
|
---|
419 | RTCString &append(const char *pszSrc);
|
---|
420 |
|
---|
421 | /**
|
---|
422 | * Appends the a substring from @a rThat to @a this.
|
---|
423 | *
|
---|
424 | * @param rThat The string to append a substring from.
|
---|
425 | * @param offStart The start of the substring to append (byte offset,
|
---|
426 | * not codepoint).
|
---|
427 | * @param cchMax The maximum number of bytes to append.
|
---|
428 | * @throws std::bad_alloc On allocation error. The object is left unchanged.
|
---|
429 | * @returns Reference to the object.
|
---|
430 | */
|
---|
431 | RTCString &append(const RTCString &rThat, size_t offStart, size_t cchMax = RTSTR_MAX);
|
---|
432 |
|
---|
433 | /**
|
---|
434 | * Appends the first @a cchMax chars from string @a pszThat to @a this.
|
---|
435 | *
|
---|
436 | * @param pszThat The C-style string to append.
|
---|
437 | * @param cchMax The maximum number of bytes to append.
|
---|
438 | * @throws std::bad_alloc On allocation error. The object is left unchanged.
|
---|
439 | * @returns Reference to the object.
|
---|
440 | */
|
---|
441 | RTCString &append(const char *pszThat, size_t cchMax);
|
---|
442 |
|
---|
443 | /**
|
---|
444 | * Appends the given character to @a this.
|
---|
445 | *
|
---|
446 | * @param ch The character to append.
|
---|
447 | * @throws std::bad_alloc On allocation error. The object is left unchanged.
|
---|
448 | * @returns Reference to the object.
|
---|
449 | */
|
---|
450 | RTCString &append(char ch);
|
---|
451 |
|
---|
452 | /**
|
---|
453 | * Appends the given unicode code point to @a this.
|
---|
454 | *
|
---|
455 | * @param uc The unicode code point to append.
|
---|
456 | * @throws std::bad_alloc On allocation error. The object is left unchanged.
|
---|
457 | * @returns Reference to the object.
|
---|
458 | */
|
---|
459 | RTCString &appendCodePoint(RTUNICP uc);
|
---|
460 |
|
---|
461 | /**
|
---|
462 | * Shortcut to append(), RTCString variant.
|
---|
463 | *
|
---|
464 | * @param rThat The string to append.
|
---|
465 | * @returns Reference to the object.
|
---|
466 | */
|
---|
467 | RTCString &operator+=(const RTCString &rThat)
|
---|
468 | {
|
---|
469 | return append(rThat);
|
---|
470 | }
|
---|
471 |
|
---|
472 | /**
|
---|
473 | * Shortcut to append(), const char* variant.
|
---|
474 | *
|
---|
475 | * @param pszThat The C-style string to append.
|
---|
476 | * @returns Reference to the object.
|
---|
477 | */
|
---|
478 | RTCString &operator+=(const char *pszThat)
|
---|
479 | {
|
---|
480 | return append(pszThat);
|
---|
481 | }
|
---|
482 |
|
---|
483 | /**
|
---|
484 | * Shortcut to append(), char variant.
|
---|
485 | *
|
---|
486 | * @param ch The character to append.
|
---|
487 | *
|
---|
488 | * @returns Reference to the object.
|
---|
489 | */
|
---|
490 | RTCString &operator+=(char ch)
|
---|
491 | {
|
---|
492 | return append(ch);
|
---|
493 | }
|
---|
494 |
|
---|
495 | /**
|
---|
496 | * Converts the member string to upper case.
|
---|
497 | *
|
---|
498 | * @returns Reference to the object.
|
---|
499 | */
|
---|
500 | RTCString &toUpper()
|
---|
501 | {
|
---|
502 | if (length())
|
---|
503 | {
|
---|
504 | /* Folding an UTF-8 string may result in a shorter encoding (see
|
---|
505 | testcase), so recalculate the length afterwards. */
|
---|
506 | ::RTStrToUpper(m_psz);
|
---|
507 | size_t cchNew = strlen(m_psz);
|
---|
508 | Assert(cchNew <= m_cch);
|
---|
509 | m_cch = cchNew;
|
---|
510 | }
|
---|
511 | return *this;
|
---|
512 | }
|
---|
513 |
|
---|
514 | /**
|
---|
515 | * Converts the member string to lower case.
|
---|
516 | *
|
---|
517 | * @returns Reference to the object.
|
---|
518 | */
|
---|
519 | RTCString &toLower()
|
---|
520 | {
|
---|
521 | if (length())
|
---|
522 | {
|
---|
523 | /* Folding an UTF-8 string may result in a shorter encoding (see
|
---|
524 | testcase), so recalculate the length afterwards. */
|
---|
525 | ::RTStrToLower(m_psz);
|
---|
526 | size_t cchNew = strlen(m_psz);
|
---|
527 | Assert(cchNew <= m_cch);
|
---|
528 | m_cch = cchNew;
|
---|
529 | }
|
---|
530 | return *this;
|
---|
531 | }
|
---|
532 |
|
---|
533 | /**
|
---|
534 | * Erases a sequence from the string.
|
---|
535 | *
|
---|
536 | * @returns Reference to the object.
|
---|
537 | * @param offStart Where in @a this string to start erasing.
|
---|
538 | * @param cchLength How much following @a offStart to erase.
|
---|
539 | */
|
---|
540 | RTCString &erase(size_t offStart = 0, size_t cchLength = npos);
|
---|
541 |
|
---|
542 | /**
|
---|
543 | * Replaces a span of @a this string with a replacement string.
|
---|
544 | *
|
---|
545 | * @returns Reference to the object.
|
---|
546 | * @param offStart Where in @a this string to start replacing.
|
---|
547 | * @param cchLength How much following @a offStart to replace. npos is
|
---|
548 | * accepted.
|
---|
549 | * @param rStrReplacement The replacement string.
|
---|
550 | *
|
---|
551 | * @throws std::bad_alloc On allocation error. The object is left unchanged.
|
---|
552 | *
|
---|
553 | * @note Non-standard behaviour if offStart is beyond the end of the string.
|
---|
554 | * No change will occure and strict builds hits a debug assertion.
|
---|
555 | */
|
---|
556 | RTCString &replace(size_t offStart, size_t cchLength, const RTCString &rStrReplacement);
|
---|
557 |
|
---|
558 | /**
|
---|
559 | * Replaces a span of @a this string with a replacement substring.
|
---|
560 | *
|
---|
561 | * @returns Reference to the object.
|
---|
562 | * @param offStart Where in @a this string to start replacing.
|
---|
563 | * @param cchLength How much following @a offStart to replace. npos is
|
---|
564 | * accepted.
|
---|
565 | * @param rStrReplacement The string from which a substring is taken.
|
---|
566 | * @param offReplacement The offset into @a rStrReplacement where the
|
---|
567 | * replacement substring starts.
|
---|
568 | * @param cchReplacement The maximum length of the replacement substring.
|
---|
569 | *
|
---|
570 | * @throws std::bad_alloc On allocation error. The object is left unchanged.
|
---|
571 | *
|
---|
572 | * @note Non-standard behaviour if offStart or offReplacement is beyond the
|
---|
573 | * end of the repective strings. No change is made in the former case,
|
---|
574 | * while we consider it an empty string in the latter. In both
|
---|
575 | * situation a debug assertion is raised in strict builds.
|
---|
576 | */
|
---|
577 | RTCString &replace(size_t offStart, size_t cchLength, const RTCString &rStrReplacement,
|
---|
578 | size_t offReplacement, size_t cchReplacement);
|
---|
579 |
|
---|
580 | /**
|
---|
581 | * Replaces a span of @a this string with the replacement string.
|
---|
582 | *
|
---|
583 | * @returns Reference to the object.
|
---|
584 | * @param offStart Where in @a this string to start replacing.
|
---|
585 | * @param cchLength How much following @a offStart to replace. npos is
|
---|
586 | * accepted.
|
---|
587 | * @param pszReplacement The replacement string.
|
---|
588 | *
|
---|
589 | * @throws std::bad_alloc On allocation error. The object is left unchanged.
|
---|
590 | *
|
---|
591 | * @note Non-standard behaviour if offStart is beyond the end of the string.
|
---|
592 | * No change will occure and strict builds hits a debug assertion.
|
---|
593 | */
|
---|
594 | RTCString &replace(size_t offStart, size_t cchLength, const char *pszReplacement);
|
---|
595 |
|
---|
596 | /**
|
---|
597 | * Replaces a span of @a this string with the replacement string.
|
---|
598 | *
|
---|
599 | * @returns Reference to the object.
|
---|
600 | * @param offStart Where in @a this string to start replacing.
|
---|
601 | * @param cchLength How much following @a offStart to replace. npos is
|
---|
602 | * accepted.
|
---|
603 | * @param pszReplacement The replacement string.
|
---|
604 | * @param cchReplacement How much of @a pszReplacement to use at most. If a
|
---|
605 | * zero terminator is found before reaching this value,
|
---|
606 | * we'll stop there.
|
---|
607 | *
|
---|
608 | * @throws std::bad_alloc On allocation error. The object is left unchanged.
|
---|
609 | *
|
---|
610 | * @note Non-standard behaviour if offStart is beyond the end of the string.
|
---|
611 | * No change will occure and strict builds hits a debug assertion.
|
---|
612 | */
|
---|
613 | RTCString &replace(size_t offStart, size_t cchLength, const char *pszReplacement, size_t cchReplacement);
|
---|
614 |
|
---|
615 | /**
|
---|
616 | * Index operator.
|
---|
617 | *
|
---|
618 | * Returns the byte at the given index, or a null byte if the index is not
|
---|
619 | * smaller than length(). This does _not_ count codepoints but simply points
|
---|
620 | * into the member C-style string.
|
---|
621 | *
|
---|
622 | * @param i The index into the string buffer.
|
---|
623 | * @returns char at the index or null.
|
---|
624 | */
|
---|
625 | inline char operator[](size_t i) const
|
---|
626 | {
|
---|
627 | if (i < length())
|
---|
628 | return m_psz[i];
|
---|
629 | return '\0';
|
---|
630 | }
|
---|
631 |
|
---|
632 | /**
|
---|
633 | * Returns the contained string as a const C-style string pointer.
|
---|
634 | *
|
---|
635 | * This never returns NULL; if the string is empty, this returns a pointer to
|
---|
636 | * static null byte.
|
---|
637 | *
|
---|
638 | * @returns const pointer to C-style string.
|
---|
639 | */
|
---|
640 | inline const char *c_str() const
|
---|
641 | {
|
---|
642 | return (m_psz) ? m_psz : "";
|
---|
643 | }
|
---|
644 |
|
---|
645 | /**
|
---|
646 | * Returns a non-const raw pointer that allows to modify the string directly.
|
---|
647 | * As opposed to c_str() and raw(), this DOES return NULL for an empty string
|
---|
648 | * because we cannot return a non-const pointer to a static "" global.
|
---|
649 | *
|
---|
650 | * @warning
|
---|
651 | * -# Be sure not to modify data beyond the allocated memory! Call
|
---|
652 | * capacity() to find out how large that buffer is.
|
---|
653 | * -# After any operation that modifies the length of the string,
|
---|
654 | * you _must_ call RTCString::jolt(), or subsequent copy operations
|
---|
655 | * may go nowhere. Better not use mutableRaw() at all.
|
---|
656 | */
|
---|
657 | char *mutableRaw()
|
---|
658 | {
|
---|
659 | return m_psz;
|
---|
660 | }
|
---|
661 |
|
---|
662 | /**
|
---|
663 | * Clean up after using mutableRaw.
|
---|
664 | *
|
---|
665 | * Intended to be called after something has messed with the internal string
|
---|
666 | * buffer (e.g. after using mutableRaw() or Utf8Str::asOutParam()). Resets the
|
---|
667 | * internal lengths correctly. Otherwise subsequent copy operations may go
|
---|
668 | * nowhere.
|
---|
669 | */
|
---|
670 | void jolt()
|
---|
671 | {
|
---|
672 | if (m_psz)
|
---|
673 | {
|
---|
674 | m_cch = strlen(m_psz);
|
---|
675 | m_cbAllocated = m_cch + 1; /* (Required for the Utf8Str::asOutParam case) */
|
---|
676 | }
|
---|
677 | else
|
---|
678 | {
|
---|
679 | m_cch = 0;
|
---|
680 | m_cbAllocated = 0;
|
---|
681 | }
|
---|
682 | }
|
---|
683 |
|
---|
684 | /**
|
---|
685 | * Returns @c true if the member string has no length.
|
---|
686 | *
|
---|
687 | * This is @c true for instances created from both NULL and "" input
|
---|
688 | * strings.
|
---|
689 | *
|
---|
690 | * This states nothing about how much memory might be allocated.
|
---|
691 | *
|
---|
692 | * @returns @c true if empty, @c false if not.
|
---|
693 | */
|
---|
694 | bool isEmpty() const
|
---|
695 | {
|
---|
696 | return length() == 0;
|
---|
697 | }
|
---|
698 |
|
---|
699 | /**
|
---|
700 | * Returns @c false if the member string has no length.
|
---|
701 | *
|
---|
702 | * This is @c false for instances created from both NULL and "" input
|
---|
703 | * strings.
|
---|
704 | *
|
---|
705 | * This states nothing about how much memory might be allocated.
|
---|
706 | *
|
---|
707 | * @returns @c false if empty, @c true if not.
|
---|
708 | */
|
---|
709 | bool isNotEmpty() const
|
---|
710 | {
|
---|
711 | return length() != 0;
|
---|
712 | }
|
---|
713 |
|
---|
714 | /** Case sensitivity selector. */
|
---|
715 | enum CaseSensitivity
|
---|
716 | {
|
---|
717 | CaseSensitive,
|
---|
718 | CaseInsensitive
|
---|
719 | };
|
---|
720 |
|
---|
721 | /**
|
---|
722 | * Compares the member string to a C-string.
|
---|
723 | *
|
---|
724 | * @param pcszThat The string to compare with.
|
---|
725 | * @param cs Whether comparison should be case-sensitive.
|
---|
726 | * @returns 0 if equal, negative if this is smaller than @a pcsz, positive
|
---|
727 | * if larger.
|
---|
728 | */
|
---|
729 | int compare(const char *pcszThat, CaseSensitivity cs = CaseSensitive) const
|
---|
730 | {
|
---|
731 | /* This klugde is for m_cch=0 and m_psz=NULL. pcsz=NULL and psz=""
|
---|
732 | are treated the same way so that str.compare(str2.c_str()) works. */
|
---|
733 | if (length() == 0)
|
---|
734 | return pcszThat == NULL || *pcszThat == '\0' ? 0 : -1;
|
---|
735 |
|
---|
736 | if (cs == CaseSensitive)
|
---|
737 | return ::RTStrCmp(m_psz, pcszThat);
|
---|
738 | return ::RTStrICmp(m_psz, pcszThat);
|
---|
739 | }
|
---|
740 |
|
---|
741 | /**
|
---|
742 | * Compares the member string to another RTCString.
|
---|
743 | *
|
---|
744 | * @param rThat The string to compare with.
|
---|
745 | * @param cs Whether comparison should be case-sensitive.
|
---|
746 | * @returns 0 if equal, negative if this is smaller than @a pcsz, positive
|
---|
747 | * if larger.
|
---|
748 | */
|
---|
749 | int compare(const RTCString &rThat, CaseSensitivity cs = CaseSensitive) const
|
---|
750 | {
|
---|
751 | if (cs == CaseSensitive)
|
---|
752 | return ::RTStrCmp(m_psz, rThat.m_psz);
|
---|
753 | return ::RTStrICmp(m_psz, rThat.m_psz);
|
---|
754 | }
|
---|
755 |
|
---|
756 | /**
|
---|
757 | * Compares the two strings.
|
---|
758 | *
|
---|
759 | * @returns true if equal, false if not.
|
---|
760 | * @param rThat The string to compare with.
|
---|
761 | */
|
---|
762 | bool equals(const RTCString &rThat) const
|
---|
763 | {
|
---|
764 | return rThat.length() == length()
|
---|
765 | && ( length() == 0
|
---|
766 | || memcmp(rThat.m_psz, m_psz, length()) == 0);
|
---|
767 | }
|
---|
768 |
|
---|
769 | /**
|
---|
770 | * Compares the two strings.
|
---|
771 | *
|
---|
772 | * @returns true if equal, false if not.
|
---|
773 | * @param pszThat The string to compare with.
|
---|
774 | */
|
---|
775 | bool equals(const char *pszThat) const
|
---|
776 | {
|
---|
777 | /* This klugde is for m_cch=0 and m_psz=NULL. pcsz=NULL and psz=""
|
---|
778 | are treated the same way so that str.equals(str2.c_str()) works. */
|
---|
779 | if (length() == 0)
|
---|
780 | return pszThat == NULL || *pszThat == '\0';
|
---|
781 | return RTStrCmp(pszThat, m_psz) == 0;
|
---|
782 | }
|
---|
783 |
|
---|
784 | /**
|
---|
785 | * Compares the two strings ignoring differences in case.
|
---|
786 | *
|
---|
787 | * @returns true if equal, false if not.
|
---|
788 | * @param that The string to compare with.
|
---|
789 | */
|
---|
790 | bool equalsIgnoreCase(const RTCString &that) const
|
---|
791 | {
|
---|
792 | /* Unfolded upper and lower case characters may require different
|
---|
793 | amount of encoding space, so the length optimization doesn't work. */
|
---|
794 | return RTStrICmp(that.m_psz, m_psz) == 0;
|
---|
795 | }
|
---|
796 |
|
---|
797 | /**
|
---|
798 | * Compares the two strings ignoring differences in case.
|
---|
799 | *
|
---|
800 | * @returns true if equal, false if not.
|
---|
801 | * @param pszThat The string to compare with.
|
---|
802 | */
|
---|
803 | bool equalsIgnoreCase(const char *pszThat) const
|
---|
804 | {
|
---|
805 | /* This klugde is for m_cch=0 and m_psz=NULL. pcsz=NULL and psz=""
|
---|
806 | are treated the same way so that str.equalsIgnoreCase(str2.c_str()) works. */
|
---|
807 | if (length() == 0)
|
---|
808 | return pszThat == NULL || *pszThat == '\0';
|
---|
809 | return RTStrICmp(pszThat, m_psz) == 0;
|
---|
810 | }
|
---|
811 |
|
---|
812 | /** @name Comparison operators.
|
---|
813 | * @{ */
|
---|
814 | bool operator==(const RTCString &that) const { return equals(that); }
|
---|
815 | bool operator!=(const RTCString &that) const { return !equals(that); }
|
---|
816 | bool operator<( const RTCString &that) const { return compare(that) < 0; }
|
---|
817 | bool operator>( const RTCString &that) const { return compare(that) > 0; }
|
---|
818 |
|
---|
819 | bool operator==(const char *pszThat) const { return equals(pszThat); }
|
---|
820 | bool operator!=(const char *pszThat) const { return !equals(pszThat); }
|
---|
821 | bool operator<( const char *pszThat) const { return compare(pszThat) < 0; }
|
---|
822 | bool operator>( const char *pszThat) const { return compare(pszThat) > 0; }
|
---|
823 | /** @} */
|
---|
824 |
|
---|
825 | /** Max string offset value.
|
---|
826 | *
|
---|
827 | * When returned by a method, this indicates failure. When taken as input,
|
---|
828 | * typically a default, it means all the way to the string terminator.
|
---|
829 | */
|
---|
830 | static const size_t npos;
|
---|
831 |
|
---|
832 | /**
|
---|
833 | * Find the given substring.
|
---|
834 | *
|
---|
835 | * Looks for @a pszNeedle in @a this starting at @a offStart and returns its
|
---|
836 | * position as a byte (not codepoint) offset, counting from the beginning of
|
---|
837 | * @a this as 0.
|
---|
838 | *
|
---|
839 | * @param pszNeedle The substring to find.
|
---|
840 | * @param offStart The (byte) offset into the string buffer to start
|
---|
841 | * searching.
|
---|
842 | *
|
---|
843 | * @returns 0 based position of pszNeedle. npos if not found.
|
---|
844 | */
|
---|
845 | size_t find(const char *pszNeedle, size_t offStart = 0) const;
|
---|
846 |
|
---|
847 | /**
|
---|
848 | * Find the given substring.
|
---|
849 | *
|
---|
850 | * Looks for @a pStrNeedle in @a this starting at @a offStart and returns its
|
---|
851 | * position as a byte (not codepoint) offset, counting from the beginning of
|
---|
852 | * @a this as 0.
|
---|
853 | *
|
---|
854 | * @param pStrNeedle The substring to find.
|
---|
855 | * @param offStart The (byte) offset into the string buffer to start
|
---|
856 | * searching.
|
---|
857 | *
|
---|
858 | * @returns 0 based position of pStrNeedle. npos if not found or pStrNeedle is
|
---|
859 | * NULL or an empty string.
|
---|
860 | */
|
---|
861 | size_t find(const RTCString *pStrNeedle, size_t offStart = 0) const;
|
---|
862 |
|
---|
863 | /**
|
---|
864 | * Replaces all occurences of cFind with cReplace in the member string.
|
---|
865 | * In order not to produce invalid UTF-8, the characters must be ASCII
|
---|
866 | * values less than 128; this is not verified.
|
---|
867 | *
|
---|
868 | * @param chFind Character to replace. Must be ASCII < 128.
|
---|
869 | * @param chReplace Character to replace cFind with. Must be ASCII < 128.
|
---|
870 | */
|
---|
871 | void findReplace(char chFind, char chReplace);
|
---|
872 |
|
---|
873 | /**
|
---|
874 | * Count the occurences of the specified character in the string.
|
---|
875 | *
|
---|
876 | * @param ch What to search for. Must be ASCII < 128.
|
---|
877 | * @remarks QString::count
|
---|
878 | */
|
---|
879 | size_t count(char ch) const;
|
---|
880 |
|
---|
881 | /**
|
---|
882 | * Count the occurences of the specified sub-string in the string.
|
---|
883 | *
|
---|
884 | * @param psz What to search for.
|
---|
885 | * @param cs Case sensitivity selector.
|
---|
886 | * @remarks QString::count
|
---|
887 | */
|
---|
888 | size_t count(const char *psz, CaseSensitivity cs = CaseSensitive) const;
|
---|
889 |
|
---|
890 | /**
|
---|
891 | * Count the occurences of the specified sub-string in the string.
|
---|
892 | *
|
---|
893 | * @param pStr What to search for.
|
---|
894 | * @param cs Case sensitivity selector.
|
---|
895 | * @remarks QString::count
|
---|
896 | */
|
---|
897 | size_t count(const RTCString *pStr, CaseSensitivity cs = CaseSensitive) const;
|
---|
898 |
|
---|
899 | /**
|
---|
900 | * Strips leading and trailing spaces.
|
---|
901 | *
|
---|
902 | * @returns this
|
---|
903 | */
|
---|
904 | RTCString &strip();
|
---|
905 |
|
---|
906 | /**
|
---|
907 | * Strips leading spaces.
|
---|
908 | *
|
---|
909 | * @returns this
|
---|
910 | */
|
---|
911 | RTCString &stripLeft();
|
---|
912 |
|
---|
913 | /**
|
---|
914 | * Strips trailing spaces.
|
---|
915 | *
|
---|
916 | * @returns this
|
---|
917 | */
|
---|
918 | RTCString &stripRight();
|
---|
919 |
|
---|
920 | /**
|
---|
921 | * Returns a substring of @a this as a new Utf8Str.
|
---|
922 | *
|
---|
923 | * Works exactly like its equivalent in std::string. With the default
|
---|
924 | * parameters "0" and "npos", this always copies the entire string. The
|
---|
925 | * "pos" and "n" arguments represent bytes; it is the caller's responsibility
|
---|
926 | * to ensure that the offsets do not copy invalid UTF-8 sequences. When
|
---|
927 | * used in conjunction with find() and length(), this will work.
|
---|
928 | *
|
---|
929 | * @param pos Index of first byte offset to copy from @a this,
|
---|
930 | * counting from 0.
|
---|
931 | * @param n Number of bytes to copy, starting with the one at "pos".
|
---|
932 | * The copying will stop if the null terminator is encountered before
|
---|
933 | * n bytes have been copied.
|
---|
934 | */
|
---|
935 | RTCString substr(size_t pos = 0, size_t n = npos) const
|
---|
936 | {
|
---|
937 | return RTCString(*this, pos, n);
|
---|
938 | }
|
---|
939 |
|
---|
940 | /**
|
---|
941 | * Returns a substring of @a this as a new Utf8Str. As opposed to substr(), this
|
---|
942 | * variant takes codepoint offsets instead of byte offsets.
|
---|
943 | *
|
---|
944 | * @param pos Index of first unicode codepoint to copy from
|
---|
945 | * @a this, counting from 0.
|
---|
946 | * @param n Number of unicode codepoints to copy, starting with
|
---|
947 | * the one at "pos". The copying will stop if the null
|
---|
948 | * terminator is encountered before n codepoints have
|
---|
949 | * been copied.
|
---|
950 | */
|
---|
951 | RTCString substrCP(size_t pos = 0, size_t n = npos) const;
|
---|
952 |
|
---|
953 | /**
|
---|
954 | * Returns true if @a this ends with @a that.
|
---|
955 | *
|
---|
956 | * @param that Suffix to test for.
|
---|
957 | * @param cs Case sensitivity selector.
|
---|
958 | * @returns true if match, false if mismatch.
|
---|
959 | */
|
---|
960 | bool endsWith(const RTCString &that, CaseSensitivity cs = CaseSensitive) const;
|
---|
961 |
|
---|
962 | /**
|
---|
963 | * Returns true if @a this begins with @a that.
|
---|
964 | * @param that Prefix to test for.
|
---|
965 | * @param cs Case sensitivity selector.
|
---|
966 | * @returns true if match, false if mismatch.
|
---|
967 | */
|
---|
968 | bool startsWith(const RTCString &that, CaseSensitivity cs = CaseSensitive) const;
|
---|
969 |
|
---|
970 | /**
|
---|
971 | * Checks if the string starts with the given word, ignoring leading blanks.
|
---|
972 | *
|
---|
973 | * @param pszWord The word to test for.
|
---|
974 | * @param enmCase Case sensitivity selector.
|
---|
975 | * @returns true if match, false if mismatch.
|
---|
976 | */
|
---|
977 | bool startsWithWord(const char *pszWord, CaseSensitivity enmCase = CaseSensitive) const;
|
---|
978 |
|
---|
979 | /**
|
---|
980 | * Checks if the string starts with the given word, ignoring leading blanks.
|
---|
981 | *
|
---|
982 | * @param rThat Prefix to test for.
|
---|
983 | * @param enmCase Case sensitivity selector.
|
---|
984 | * @returns true if match, false if mismatch.
|
---|
985 | */
|
---|
986 | bool startsWithWord(const RTCString &rThat, CaseSensitivity enmCase = CaseSensitive) const;
|
---|
987 |
|
---|
988 | /**
|
---|
989 | * Returns true if @a this contains @a that (strstr).
|
---|
990 | *
|
---|
991 | * @param that Substring to look for.
|
---|
992 | * @param cs Case sensitivity selector.
|
---|
993 | * @returns true if found, false if not found.
|
---|
994 | */
|
---|
995 | bool contains(const RTCString &that, CaseSensitivity cs = CaseSensitive) const;
|
---|
996 |
|
---|
997 | /**
|
---|
998 | * Returns true if @a this contains @a pszNeedle (strstr).
|
---|
999 | *
|
---|
1000 | * @param pszNeedle Substring to look for.
|
---|
1001 | * @param cs Case sensitivity selector.
|
---|
1002 | * @returns true if found, false if not found.
|
---|
1003 | */
|
---|
1004 | bool contains(const char *pszNeedle, CaseSensitivity cs = CaseSensitive) const;
|
---|
1005 |
|
---|
1006 | /**
|
---|
1007 | * Attempts to convert the member string into a 32-bit integer.
|
---|
1008 | *
|
---|
1009 | * @returns 32-bit unsigned number on success.
|
---|
1010 | * @returns 0 on failure.
|
---|
1011 | */
|
---|
1012 | int32_t toInt32() const
|
---|
1013 | {
|
---|
1014 | return RTStrToInt32(m_psz);
|
---|
1015 | }
|
---|
1016 |
|
---|
1017 | /**
|
---|
1018 | * Attempts to convert the member string into an unsigned 32-bit integer.
|
---|
1019 | *
|
---|
1020 | * @returns 32-bit unsigned number on success.
|
---|
1021 | * @returns 0 on failure.
|
---|
1022 | */
|
---|
1023 | uint32_t toUInt32() const
|
---|
1024 | {
|
---|
1025 | return RTStrToUInt32(m_psz);
|
---|
1026 | }
|
---|
1027 |
|
---|
1028 | /**
|
---|
1029 | * Attempts to convert the member string into an 64-bit integer.
|
---|
1030 | *
|
---|
1031 | * @returns 64-bit unsigned number on success.
|
---|
1032 | * @returns 0 on failure.
|
---|
1033 | */
|
---|
1034 | int64_t toInt64() const
|
---|
1035 | {
|
---|
1036 | return RTStrToInt64(m_psz);
|
---|
1037 | }
|
---|
1038 |
|
---|
1039 | /**
|
---|
1040 | * Attempts to convert the member string into an unsigned 64-bit integer.
|
---|
1041 | *
|
---|
1042 | * @returns 64-bit unsigned number on success.
|
---|
1043 | * @returns 0 on failure.
|
---|
1044 | */
|
---|
1045 | uint64_t toUInt64() const
|
---|
1046 | {
|
---|
1047 | return RTStrToUInt64(m_psz);
|
---|
1048 | }
|
---|
1049 |
|
---|
1050 | /**
|
---|
1051 | * Attempts to convert the member string into an unsigned 64-bit integer.
|
---|
1052 | *
|
---|
1053 | * @param i Where to return the value on success.
|
---|
1054 | * @returns IPRT error code, see RTStrToInt64.
|
---|
1055 | */
|
---|
1056 | int toInt(uint64_t &i) const;
|
---|
1057 |
|
---|
1058 | /**
|
---|
1059 | * Attempts to convert the member string into an unsigned 32-bit integer.
|
---|
1060 | *
|
---|
1061 | * @param i Where to return the value on success.
|
---|
1062 | * @returns IPRT error code, see RTStrToInt32.
|
---|
1063 | */
|
---|
1064 | int toInt(uint32_t &i) const;
|
---|
1065 |
|
---|
1066 | /** Splitting behavior regarding empty sections in the string. */
|
---|
1067 | enum SplitMode
|
---|
1068 | {
|
---|
1069 | KeepEmptyParts, /**< Empty parts are added as empty strings to the result list. */
|
---|
1070 | RemoveEmptyParts /**< Empty parts are skipped. */
|
---|
1071 | };
|
---|
1072 |
|
---|
1073 | /**
|
---|
1074 | * Splits a string separated by strSep into its parts.
|
---|
1075 | *
|
---|
1076 | * @param a_rstrSep The separator to search for.
|
---|
1077 | * @param a_enmMode How should empty parts be handled.
|
---|
1078 | * @returns separated strings as string list.
|
---|
1079 | */
|
---|
1080 | RTCList<RTCString, RTCString *> split(const RTCString &a_rstrSep,
|
---|
1081 | SplitMode a_enmMode = RemoveEmptyParts) const;
|
---|
1082 |
|
---|
1083 | /**
|
---|
1084 | * Joins a list of strings together using the provided separator and
|
---|
1085 | * an optional prefix for each item in the list.
|
---|
1086 | *
|
---|
1087 | * @param a_rList The list to join.
|
---|
1088 | * @param a_rstrPrefix The prefix used for appending to each item.
|
---|
1089 | * @param a_rstrSep The separator used for joining.
|
---|
1090 | * @returns joined string.
|
---|
1091 | */
|
---|
1092 | static RTCString joinEx(const RTCList<RTCString, RTCString *> &a_rList,
|
---|
1093 | const RTCString &a_rstrPrefix /* = "" */,
|
---|
1094 | const RTCString &a_rstrSep /* = "" */);
|
---|
1095 |
|
---|
1096 | /**
|
---|
1097 | * Joins a list of strings together using the provided separator.
|
---|
1098 | *
|
---|
1099 | * @param a_rList The list to join.
|
---|
1100 | * @param a_rstrSep The separator used for joining.
|
---|
1101 | * @returns joined string.
|
---|
1102 | */
|
---|
1103 | static RTCString join(const RTCList<RTCString, RTCString *> &a_rList,
|
---|
1104 | const RTCString &a_rstrSep = "");
|
---|
1105 |
|
---|
1106 | /**
|
---|
1107 | * Swaps two strings in a fast way.
|
---|
1108 | *
|
---|
1109 | * Exception safe.
|
---|
1110 | *
|
---|
1111 | * @param a_rThat The string to swap with.
|
---|
1112 | */
|
---|
1113 | inline void swap(RTCString &a_rThat) throw()
|
---|
1114 | {
|
---|
1115 | char *pszTmp = m_psz;
|
---|
1116 | size_t cchTmp = m_cch;
|
---|
1117 | size_t cbAllocatedTmp = m_cbAllocated;
|
---|
1118 |
|
---|
1119 | m_psz = a_rThat.m_psz;
|
---|
1120 | m_cch = a_rThat.m_cch;
|
---|
1121 | m_cbAllocated = a_rThat.m_cbAllocated;
|
---|
1122 |
|
---|
1123 | a_rThat.m_psz = pszTmp;
|
---|
1124 | a_rThat.m_cch = cchTmp;
|
---|
1125 | a_rThat.m_cbAllocated = cbAllocatedTmp;
|
---|
1126 | }
|
---|
1127 |
|
---|
1128 | protected:
|
---|
1129 |
|
---|
1130 | /**
|
---|
1131 | * Hide operator bool() to force people to use isEmpty() explicitly.
|
---|
1132 | */
|
---|
1133 | operator bool() const;
|
---|
1134 |
|
---|
1135 | /**
|
---|
1136 | * Destructor implementation, also used to clean up in operator=() before
|
---|
1137 | * assigning a new string.
|
---|
1138 | */
|
---|
1139 | void cleanup()
|
---|
1140 | {
|
---|
1141 | if (m_psz)
|
---|
1142 | {
|
---|
1143 | RTStrFree(m_psz);
|
---|
1144 | m_psz = NULL;
|
---|
1145 | m_cch = 0;
|
---|
1146 | m_cbAllocated = 0;
|
---|
1147 | }
|
---|
1148 | }
|
---|
1149 |
|
---|
1150 | /**
|
---|
1151 | * Protected internal helper to copy a string.
|
---|
1152 | *
|
---|
1153 | * This ignores the previous object state, so either call this from a
|
---|
1154 | * constructor or call cleanup() first. copyFromN() unconditionally sets
|
---|
1155 | * the members to a copy of the given other strings and makes no
|
---|
1156 | * assumptions about previous contents. Can therefore be used both in copy
|
---|
1157 | * constructors, when member variables have no defined value, and in
|
---|
1158 | * assignments after having called cleanup().
|
---|
1159 | *
|
---|
1160 | * @param pcszSrc The source string.
|
---|
1161 | * @param cchSrc The number of chars (bytes) to copy from the
|
---|
1162 | * source strings. RTSTR_MAX is NOT accepted.
|
---|
1163 | *
|
---|
1164 | * @throws std::bad_alloc On allocation failure. The object is left
|
---|
1165 | * describing a NULL string.
|
---|
1166 | */
|
---|
1167 | void copyFromN(const char *pcszSrc, size_t cchSrc)
|
---|
1168 | {
|
---|
1169 | if (cchSrc)
|
---|
1170 | {
|
---|
1171 | m_psz = RTStrAlloc(cchSrc + 1);
|
---|
1172 | if (RT_LIKELY(m_psz))
|
---|
1173 | {
|
---|
1174 | m_cch = cchSrc;
|
---|
1175 | m_cbAllocated = cchSrc + 1;
|
---|
1176 | memcpy(m_psz, pcszSrc, cchSrc);
|
---|
1177 | m_psz[cchSrc] = '\0';
|
---|
1178 | }
|
---|
1179 | else
|
---|
1180 | {
|
---|
1181 | m_cch = 0;
|
---|
1182 | m_cbAllocated = 0;
|
---|
1183 | #ifdef RT_EXCEPTIONS_ENABLED
|
---|
1184 | throw std::bad_alloc();
|
---|
1185 | #endif
|
---|
1186 | }
|
---|
1187 | }
|
---|
1188 | else
|
---|
1189 | {
|
---|
1190 | m_cch = 0;
|
---|
1191 | m_cbAllocated = 0;
|
---|
1192 | m_psz = NULL;
|
---|
1193 | }
|
---|
1194 | }
|
---|
1195 |
|
---|
1196 | /**
|
---|
1197 | * Appends exactly @a cchSrc chars from @a pszSrc to @a this.
|
---|
1198 | *
|
---|
1199 | * This is an internal worker for the append() methods.
|
---|
1200 | *
|
---|
1201 | * @returns Reference to the object.
|
---|
1202 | * @param pszSrc The source string.
|
---|
1203 | * @param cchSrc The source string length (exact).
|
---|
1204 | * @throws std::bad_alloc On allocation error. The object is left unchanged.
|
---|
1205 | *
|
---|
1206 | */
|
---|
1207 | RTCString &appendWorker(const char *pszSrc, size_t cchSrc);
|
---|
1208 |
|
---|
1209 | /**
|
---|
1210 | * Replaces exatly @a cchLength chars at @a offStart with @a cchSrc from @a
|
---|
1211 | * pszSrc.
|
---|
1212 | *
|
---|
1213 | * @returns Reference to the object.
|
---|
1214 | * @param offStart Where in @a this string to start replacing.
|
---|
1215 | * @param cchLength How much following @a offStart to replace. npos is
|
---|
1216 | * accepted.
|
---|
1217 | * @param pszSrc The replacement string.
|
---|
1218 | * @param cchSrc The exactly length of the replacement string.
|
---|
1219 | *
|
---|
1220 | * @throws std::bad_alloc On allocation error. The object is left unchanged.
|
---|
1221 | */
|
---|
1222 | RTCString &replaceWorker(size_t offStart, size_t cchLength, const char *pszSrc, size_t cchSrc);
|
---|
1223 |
|
---|
1224 | static DECLCALLBACK(size_t) printfOutputCallback(void *pvArg, const char *pachChars, size_t cbChars);
|
---|
1225 |
|
---|
1226 | char *m_psz; /**< The string buffer. */
|
---|
1227 | size_t m_cch; /**< strlen(m_psz) - i.e. no terminator included. */
|
---|
1228 | size_t m_cbAllocated; /**< Size of buffer that m_psz points to; at least m_cbLength + 1. */
|
---|
1229 | };
|
---|
1230 |
|
---|
1231 | /** @} */
|
---|
1232 |
|
---|
1233 |
|
---|
1234 | /** @addtogroup grp_rt_cpp_string
|
---|
1235 | * @{
|
---|
1236 | */
|
---|
1237 |
|
---|
1238 | /**
|
---|
1239 | * Concatenate two strings.
|
---|
1240 | *
|
---|
1241 | * @param a_rstr1 String one.
|
---|
1242 | * @param a_rstr2 String two.
|
---|
1243 | * @returns the concatenate string.
|
---|
1244 | *
|
---|
1245 | * @relates RTCString
|
---|
1246 | */
|
---|
1247 | RTDECL(const RTCString) operator+(const RTCString &a_rstr1, const RTCString &a_rstr2);
|
---|
1248 |
|
---|
1249 | /**
|
---|
1250 | * Concatenate two strings.
|
---|
1251 | *
|
---|
1252 | * @param a_rstr1 String one.
|
---|
1253 | * @param a_psz2 String two.
|
---|
1254 | * @returns the concatenate string.
|
---|
1255 | *
|
---|
1256 | * @relates RTCString
|
---|
1257 | */
|
---|
1258 | RTDECL(const RTCString) operator+(const RTCString &a_rstr1, const char *a_psz2);
|
---|
1259 |
|
---|
1260 | /**
|
---|
1261 | * Concatenate two strings.
|
---|
1262 | *
|
---|
1263 | * @param a_psz1 String one.
|
---|
1264 | * @param a_rstr2 String two.
|
---|
1265 | * @returns the concatenate string.
|
---|
1266 | *
|
---|
1267 | * @relates RTCString
|
---|
1268 | */
|
---|
1269 | RTDECL(const RTCString) operator+(const char *a_psz1, const RTCString &a_rstr2);
|
---|
1270 |
|
---|
1271 | /**
|
---|
1272 | * Class with RTCString::printf as constructor for your convenience.
|
---|
1273 | *
|
---|
1274 | * Constructing a RTCString string object from a format string and a variable
|
---|
1275 | * number of arguments can easily be confused with the other RTCString
|
---|
1276 | * constructors, thus this child class.
|
---|
1277 | *
|
---|
1278 | * The usage of this class is like the following:
|
---|
1279 | * @code
|
---|
1280 | RTCStringFmt strName("program name = %s", argv[0]);
|
---|
1281 | @endcode
|
---|
1282 | */
|
---|
1283 | class RTCStringFmt : public RTCString
|
---|
1284 | {
|
---|
1285 | public:
|
---|
1286 |
|
---|
1287 | /**
|
---|
1288 | * Constructs a new string given the format string and the list of the
|
---|
1289 | * arguments for the format string.
|
---|
1290 | *
|
---|
1291 | * @param a_pszFormat Pointer to the format string (UTF-8),
|
---|
1292 | * @see pg_rt_str_format.
|
---|
1293 | * @param ... Ellipsis containing the arguments specified by
|
---|
1294 | * the format string.
|
---|
1295 | */
|
---|
1296 | explicit RTCStringFmt(const char *a_pszFormat, ...) RT_IPRT_FORMAT_ATTR(1, 2)
|
---|
1297 | {
|
---|
1298 | va_list va;
|
---|
1299 | va_start(va, a_pszFormat);
|
---|
1300 | printfV(a_pszFormat, va);
|
---|
1301 | va_end(va);
|
---|
1302 | }
|
---|
1303 |
|
---|
1304 | RTMEMEF_NEW_AND_DELETE_OPERATORS();
|
---|
1305 |
|
---|
1306 | protected:
|
---|
1307 | RTCStringFmt() {}
|
---|
1308 | };
|
---|
1309 |
|
---|
1310 | /** @} */
|
---|
1311 |
|
---|
1312 | #endif
|
---|
1313 |
|
---|