strtonum.cpp@ 25240

Last change on this file since 25240 was 24662, checked in by vboxsync, 15 years ago
Moved RTStrVersionToUInt32 out of strtonum.cpp.
Property svn:eol-style set to `native` Property svn:keywords set to `Id`
File size: 28.6 KB

Line
1	/* $Id: strtonum.cpp 24662 2009-11-14 23:41:50Z vboxsync $ */
2	/** @file
3	* IPRT - String To Number Convertion.
4	*/
5
6	/*
7	* Copyright (C) 2006-2007 Sun Microsystems, Inc.
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*
17	* The contents of this file may alternatively be used under the terms
18	* of the Common Development and Distribution License Version 1.0
19	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20	* VirtualBox OSE distribution, in which case the provisions of the
21	* CDDL are applicable instead of those of the GPL.
22	*
23	* You may elect to license modified versions of this file under the
24	* terms and conditions of either the GPL or the CDDL or both.
25	*
26	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
27	* Clara, CA 95054 USA or visit http://www.sun.com if you need
28	* additional information or have any questions.
29	*/
30
31
32	/*******************************************************************************
33	* Header Files *
34	*******************************************************************************/
35	#include <iprt/string.h>
36	#include "internal/iprt.h"
37
38	#include <iprt/assert.h>
39	#include <iprt/ctype.h> /* needed for RT_C_IS_DIGIT */
40	#include <iprt/err.h>
41
42
43	/*******************************************************************************
44	* Global Variables *
45	*******************************************************************************/
46	/** 8-bit char -> digit. */
47	static const unsigned char g_auchDigits[256] =
48	{
49	255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
50	255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,255,255,255,255,255,255,
51	255, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,255,255,255,255,255,
52	255, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,255,255,255,255,255,
53	255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
54	255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
55	255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
56	255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255
57	};
58	/** Approximated overflow shift checks. */
59	static const char g_auchShift[36] =
60	{
61	/* 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 */
62	64, 64, 63, 63, 62, 62, 62, 62, 61, 61, 61, 61, 61, 61, 61, 61, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 59, 59, 59, 59
63	};
64
65	/*
66	#include <stdio.h>
67	int main()
68	{
69	int i;
70	printf("static const unsigned char g_auchDigits[256] =\n"
71	"{");
72	for (i = 0; i < 256; i++)
73	{
74	int ch = 255;
75	if (i >= '0' && i <= '9')
76	ch = i - '0';
77	else if (i >= 'a' && i <= 'z')
78	ch = i - 'a' + 10;
79	else if (i >= 'A' && i <= 'Z')
80	ch = i - 'A' + 10;
81	if (i == 0)
82	printf("\n %3d", ch);
83	else if ((i % 32) == 0)
84	printf(",\n %3d", ch);
85	else
86	printf(",%3d", ch);
87	}
88	printf("\n"
89	"};\n");
90	return 0;
91	}
92	*/
93
94
95	/**
96	* Converts a string representation of a number to a 64-bit unsigned number.
97	*
98	* @returns iprt status code.
99	* Warnings are used to indicate convertion problems.
100	* @retval VWRN_NUMBER_TOO_BIG
101	* @retval VWRN_NEGATIVE_UNSIGNED
102	* @retval VWRN_TRAILING_CHARS
103	* @retval VWRN_TRAILING_SPACES
104	* @retval VINF_SUCCESS
105	* @retval VERR_NO_DIGITS
106	*
107	* @param pszValue Pointer to the string value.
108	* @param ppszNext Where to store the pointer to the first char following the number. (Optional)
109	* @param uBase The base of the representation used.
110	* If the function will look for known prefixes before defaulting to 10.
111	* @param pu64 Where to store the converted number. (optional)
112	*/
113	RTDECL(int) RTStrToUInt64Ex(const char pszValue, char ppszNext, unsigned uBase, uint64_t pu64)
114	{
115	const char *psz = pszValue;
116	int iShift;
117	int rc;
118	uint64_t u64;
119	unsigned char uch;
120
121	/*
122	* Positive/Negative stuff.
123	*/
124	bool fPositive = true;
125	for (;; psz++)
126	{
127	if (*psz == '+')
128	fPositive = true;
129	else if (*psz == '-')
130	fPositive = !fPositive;
131	else
132	break;
133	}
134
135	/*
136	* Check for hex prefix.
137	*/
138	if (!uBase)
139	{
140	if ( psz[0] == '0'
141	&& (psz[1] == 'x' \|\| psz[1] == 'X')
142	&& g_auchDigits[(unsigned char)psz[2]] < 16)
143	{
144	uBase = 16;
145	psz += 2;
146	}
147	else if ( psz[0] == '0'
148	&& g_auchDigits[(unsigned char)psz[1]] < 8)
149	{
150	uBase = 8;
151	psz++;
152	}
153	else
154	uBase = 10;
155	}
156	else if ( uBase == 16
157	&& psz[0] == '0'
158	&& (psz[1] == 'x' \|\| psz[1] == 'X')
159	&& g_auchDigits[(unsigned char)psz[2]] < 16)
160	psz += 2;
161
162	/*
163	* Interpret the value.
164	* Note: We only support ascii digits at this time... :-)
165	*/
166	iShift = g_auchShift[uBase];
167	pszValue = psz; /* (Prefix and sign doesn't count in the digit counting.) */
168	rc = VINF_SUCCESS;
169	u64 = 0;
170	while ((uch = (unsigned char)*psz) != 0)
171	{
172	unsigned char chDigit = g_auchDigits[uch];
173	uint64_t u64Prev;
174
175	if (chDigit >= uBase)
176	break;
177
178	u64Prev = u64;
179	u64 *= uBase;
180	u64 += chDigit;
181	if (u64Prev > u64 \|\| (u64Prev >> iShift))
182	rc = VWRN_NUMBER_TOO_BIG;
183	psz++;
184	}
185
186	if (!fPositive)
187	{
188	if (rc == VINF_SUCCESS)
189	rc = VWRN_NEGATIVE_UNSIGNED;
190	u64 = -(int64_t)u64;
191	}
192
193	if (pu64)
194	*pu64 = u64;
195
196	if (psz == pszValue)
197	rc = VERR_NO_DIGITS;
198
199	if (ppszNext)
200	ppszNext = (char )psz;
201
202	/*
203	* Warn about trailing chars/spaces.
204	*/
205	if ( rc == VINF_SUCCESS
206	&& *psz)
207	{
208	while (psz == ' ' \|\| psz == '\t')
209	psz++;
210	rc = *psz ? VWRN_TRAILING_CHARS : VWRN_TRAILING_SPACES;
211	}
212
213	return rc;
214	}
215	RT_EXPORT_SYMBOL(RTStrToUInt64Ex);
216
217
218	/**
219	* Converts a string representation of a number to a 64-bit unsigned number,
220	* making sure the full string is converted.
221	*
222	* @returns iprt status code.
223	* Warnings are used to indicate convertion problems.
224	* @retval VWRN_NUMBER_TOO_BIG
225	* @retval VWRN_NEGATIVE_UNSIGNED
226	* @retval VINF_SUCCESS
227	* @retval VERR_NO_DIGITS
228	* @retval VERR_TRAILING_SPACES
229	* @retval VERR_TRAILING_CHARS
230	*
231	* @param pszValue Pointer to the string value.
232	* @param uBase The base of the representation used.
233	* If the function will look for known prefixes before defaulting to 10.
234	* @param pu64 Where to store the converted number. (optional)
235	*/
236	RTDECL(int) RTStrToUInt64Full(const char pszValue, unsigned uBase, uint64_t pu64)
237	{
238	char *psz;
239	int rc = RTStrToUInt64Ex(pszValue, &psz, uBase, pu64);
240	if (RT_SUCCESS(rc) && *psz)
241	{
242	if (rc == VWRN_TRAILING_CHARS \|\| rc == VWRN_TRAILING_SPACES)
243	rc = -rc;
244	else
245	{
246	while (psz == ' ' \|\| psz == '\t')
247	psz++;
248	rc = *psz ? VERR_TRAILING_CHARS : VERR_TRAILING_SPACES;
249	}
250	}
251	return rc;
252	}
253	RT_EXPORT_SYMBOL(RTStrToUInt64Full);
254
255
256	/**
257	* Converts a string representation of a number to a 64-bit unsigned number.
258	* The base is guessed.
259	*
260	* @returns 64-bit unsigned number on success.
261	* @returns 0 on failure.
262	* @param pszValue Pointer to the string value.
263	*/
264	RTDECL(uint64_t) RTStrToUInt64(const char *pszValue)
265	{
266	uint64_t u64;
267	int rc = RTStrToUInt64Ex(pszValue, NULL, 0, &u64);
268	if (RT_SUCCESS(rc))
269	return u64;
270	return 0;
271	}
272	RT_EXPORT_SYMBOL(RTStrToUInt64);
273
274
275	/**
276	* Converts a string representation of a number to a 32-bit unsigned number.
277	*
278	* @returns iprt status code.
279	* Warnings are used to indicate convertion problems.
280	* @retval VWRN_NUMBER_TOO_BIG
281	* @retval VWRN_NEGATIVE_UNSIGNED
282	* @retval VWRN_TRAILING_CHARS
283	* @retval VWRN_TRAILING_SPACES
284	* @retval VINF_SUCCESS
285	* @retval VERR_NO_DIGITS
286	*
287	* @param pszValue Pointer to the string value.
288	* @param ppszNext Where to store the pointer to the first char following the number. (Optional)
289	* @param uBase The base of the representation used.
290	* If the function will look for known prefixes before defaulting to 10.
291	* @param pu32 Where to store the converted number. (optional)
292	*/
293	RTDECL(int) RTStrToUInt32Ex(const char pszValue, char ppszNext, unsigned uBase, uint32_t pu32)
294	{
295	uint64_t u64;
296	int rc = RTStrToUInt64Ex(pszValue, ppszNext, uBase, &u64);
297	if (RT_SUCCESS(rc))
298	{
299	if (u64 & ~0xffffffffULL)
300	rc = VWRN_NUMBER_TOO_BIG;
301	}
302	if (pu32)
303	*pu32 = (uint32_t)u64;
304	return rc;
305	}
306	RT_EXPORT_SYMBOL(RTStrToUInt32Ex);
307
308
309	/**
310	* Converts a string representation of a number to a 32-bit unsigned number,
311	* making sure the full string is converted.
312	*
313	* @returns iprt status code.
314	* Warnings are used to indicate convertion problems.
315	* @retval VWRN_NUMBER_TOO_BIG
316	* @retval VWRN_NEGATIVE_UNSIGNED
317	* @retval VINF_SUCCESS
318	* @retval VERR_NO_DIGITS
319	* @retval VERR_TRAILING_SPACES
320	* @retval VERR_TRAILING_CHARS
321	*
322	* @param pszValue Pointer to the string value.
323	* @param uBase The base of the representation used.
324	* If the function will look for known prefixes before defaulting to 10.
325	* @param pu32 Where to store the converted number. (optional)
326	*/
327	RTDECL(int) RTStrToUInt32Full(const char pszValue, unsigned uBase, uint32_t pu32)
328	{
329	uint64_t u64;
330	int rc = RTStrToUInt64Full(pszValue, uBase, &u64);
331	if (RT_SUCCESS(rc))
332	{
333	if (u64 & ~0xffffffffULL)
334	rc = VWRN_NUMBER_TOO_BIG;
335	}
336	if (pu32)
337	*pu32 = (uint32_t)u64;
338	return rc;
339	}
340	RT_EXPORT_SYMBOL(RTStrToUInt32Full);
341
342
343	/**
344	* Converts a string representation of a number to a 64-bit unsigned number.
345	* The base is guessed.
346	*
347	* @returns 32-bit unsigned number on success.
348	* @returns 0 on failure.
349	* @param pszValue Pointer to the string value.
350	*/
351	RTDECL(uint32_t) RTStrToUInt32(const char *pszValue)
352	{
353	uint32_t u32;
354	int rc = RTStrToUInt32Ex(pszValue, NULL, 0, &u32);
355	if (RT_SUCCESS(rc))
356	return u32;
357	return 0;
358	}
359	RT_EXPORT_SYMBOL(RTStrToUInt32);
360
361
362	/**
363	* Converts a string representation of a number to a 16-bit unsigned number.
364	*
365	* @returns iprt status code.
366	* Warnings are used to indicate convertion problems.
367	* @retval VWRN_NUMBER_TOO_BIG
368	* @retval VWRN_NEGATIVE_UNSIGNED
369	* @retval VWRN_TRAILING_CHARS
370	* @retval VWRN_TRAILING_SPACES
371	* @retval VINF_SUCCESS
372	* @retval VERR_NO_DIGITS
373	*
374	* @param pszValue Pointer to the string value.
375	* @param ppszNext Where to store the pointer to the first char following the number. (Optional)
376	* @param uBase The base of the representation used.
377	* If the function will look for known prefixes before defaulting to 10.
378	* @param pu16 Where to store the converted number. (optional)
379	*/
380	RTDECL(int) RTStrToUInt16Ex(const char pszValue, char ppszNext, unsigned uBase, uint16_t pu16)
381	{
382	uint64_t u64;
383	int rc = RTStrToUInt64Ex(pszValue, ppszNext, uBase, &u64);
384	if (RT_SUCCESS(rc))
385	{
386	if (u64 & ~0xffffULL)
387	rc = VWRN_NUMBER_TOO_BIG;
388	}
389	if (pu16)
390	*pu16 = (uint16_t)u64;
391	return rc;
392	}
393	RT_EXPORT_SYMBOL(RTStrToUInt16Ex);
394
395
396	/**
397	* Converts a string representation of a number to a 16-bit unsigned number,
398	* making sure the full string is converted.
399	*
400	* @returns iprt status code.
401	* Warnings are used to indicate convertion problems.
402	* @retval VWRN_NUMBER_TOO_BIG
403	* @retval VWRN_NEGATIVE_UNSIGNED
404	* @retval VINF_SUCCESS
405	* @retval VERR_NO_DIGITS
406	* @retval VERR_TRAILING_SPACES
407	* @retval VERR_TRAILING_CHARS
408	*
409	* @param pszValue Pointer to the string value.
410	* @param uBase The base of the representation used.
411	* If the function will look for known prefixes before defaulting to 10.
412	* @param pu16 Where to store the converted number. (optional)
413	*/
414	RTDECL(int) RTStrToUInt16Full(const char pszValue, unsigned uBase, uint16_t pu16)
415	{
416	uint64_t u64;
417	int rc = RTStrToUInt64Full(pszValue, uBase, &u64);
418	if (RT_SUCCESS(rc))
419	{
420	if (u64 & ~0xffffULL)
421	rc = VWRN_NUMBER_TOO_BIG;
422	}
423	if (pu16)
424	*pu16 = (uint16_t)u64;
425	return rc;
426	}
427	RT_EXPORT_SYMBOL(RTStrToUInt16Full);
428
429
430	/**
431	* Converts a string representation of a number to a 16-bit unsigned number.
432	* The base is guessed.
433	*
434	* @returns 16-bit unsigned number on success.
435	* @returns 0 on failure.
436	* @param pszValue Pointer to the string value.
437	*/
438	RTDECL(uint16_t) RTStrToUInt16(const char *pszValue)
439	{
440	uint16_t u16;
441	int rc = RTStrToUInt16Ex(pszValue, NULL, 0, &u16);
442	if (RT_SUCCESS(rc))
443	return u16;
444	return 0;
445	}
446	RT_EXPORT_SYMBOL(RTStrToUInt16);
447
448
449	/**
450	* Converts a string representation of a number to a 8-bit unsigned number.
451	*
452	* @returns iprt status code.
453	* Warnings are used to indicate convertion problems.
454	* @retval VWRN_NUMBER_TOO_BIG
455	* @retval VWRN_NEGATIVE_UNSIGNED
456	* @retval VWRN_TRAILING_CHARS
457	* @retval VWRN_TRAILING_SPACES
458	* @retval VINF_SUCCESS
459	* @retval VERR_NO_DIGITS
460	*
461	* @param pszValue Pointer to the string value.
462	* @param ppszNext Where to store the pointer to the first char following the number. (Optional)
463	* @param uBase The base of the representation used.
464	* If the function will look for known prefixes before defaulting to 10.
465	* @param pu8 Where to store the converted number. (optional)
466	*/
467	RTDECL(int) RTStrToUInt8Ex(const char pszValue, char ppszNext, unsigned uBase, uint8_t pu8)
468	{
469	uint64_t u64;
470	int rc = RTStrToUInt64Ex(pszValue, ppszNext, uBase, &u64);
471	if (RT_SUCCESS(rc))
472	{
473	if (u64 & ~0xffULL)
474	rc = VWRN_NUMBER_TOO_BIG;
475	}
476	if (pu8)
477	*pu8 = (uint8_t)u64;
478	return rc;
479	}
480	RT_EXPORT_SYMBOL(RTStrToUInt8Ex);
481
482
483	/**
484	* Converts a string representation of a number to a 8-bit unsigned number,
485	* making sure the full string is converted.
486	*
487	* @returns iprt status code.
488	* Warnings are used to indicate convertion problems.
489	* @retval VWRN_NUMBER_TOO_BIG
490	* @retval VWRN_NEGATIVE_UNSIGNED
491	* @retval VINF_SUCCESS
492	* @retval VERR_NO_DIGITS
493	* @retval VERR_TRAILING_SPACES
494	* @retval VERR_TRAILING_CHARS
495	*
496	* @param pszValue Pointer to the string value.
497	* @param uBase The base of the representation used.
498	* If the function will look for known prefixes before defaulting to 10.
499	* @param pu8 Where to store the converted number. (optional)
500	*/
501	RTDECL(int) RTStrToUInt8Full(const char pszValue, unsigned uBase, uint8_t pu8)
502	{
503	uint64_t u64;
504	int rc = RTStrToUInt64Full(pszValue, uBase, &u64);
505	if (RT_SUCCESS(rc))
506	{
507	if (u64 & ~0xffULL)
508	rc = VWRN_NUMBER_TOO_BIG;
509	}
510	if (pu8)
511	*pu8 = (uint8_t)u64;
512	return rc;
513	}
514	RT_EXPORT_SYMBOL(RTStrToUInt8Full);
515
516
517	/**
518	* Converts a string representation of a number to a 8-bit unsigned number.
519	* The base is guessed.
520	*
521	* @returns 8-bit unsigned number on success.
522	* @returns 0 on failure.
523	* @param pszValue Pointer to the string value.
524	*/
525	RTDECL(uint8_t) RTStrToUInt8(const char *pszValue)
526	{
527	uint8_t u8;
528	int rc = RTStrToUInt8Ex(pszValue, NULL, 0, &u8);
529	if (RT_SUCCESS(rc))
530	return u8;
531	return 0;
532	}
533	RT_EXPORT_SYMBOL(RTStrToUInt8);
534
535
536
537
538
539
540
541	/**
542	* Converts a string representation of a number to a 64-bit signed number.
543	*
544	* @returns iprt status code.
545	* Warnings are used to indicate convertion problems.
546	* @retval VWRN_NUMBER_TOO_BIG
547	* @retval VWRN_TRAILING_CHARS
548	* @retval VWRN_TRAILING_SPACES
549	* @retval VINF_SUCCESS
550	* @retval VERR_NO_DIGITS
551	*
552	* @param pszValue Pointer to the string value.
553	* @param ppszNext Where to store the pointer to the first char following the number. (Optional)
554	* @param uBase The base of the representation used.
555	* If the function will look for known prefixes before defaulting to 10.
556	* @param pi64 Where to store the converted number. (optional)
557	*/
558	RTDECL(int) RTStrToInt64Ex(const char pszValue, char ppszNext, unsigned uBase, int64_t pi64)
559	{
560	const char *psz = pszValue;
561	int iShift;
562	int rc;
563	int64_t i64;
564	unsigned char uch;
565
566	/*
567	* Positive/Negative stuff.
568	*/
569	bool fPositive = true;
570	for (;; psz++)
571	{
572	if (*psz == '+')
573	fPositive = true;
574	else if (*psz == '-')
575	fPositive = !fPositive;
576	else
577	break;
578	}
579
580	/*
581	* Check for hex prefix.
582	*/
583	if (!uBase)
584	{
585	if ( *psz == '0'
586	&& (psz[1] == 'x' \|\| psz[1] == 'X')
587	&& g_auchDigits[(unsigned char)psz[2]] < 16)
588	{
589	uBase = 16;
590	psz += 2;
591	}
592	else if ( *psz == '0'
593	&& g_auchDigits[(unsigned char)psz[1]] < 8)
594	{
595	uBase = 8;
596	psz++;
597	}
598	else
599	uBase = 10;
600	}
601	else if ( uBase == 16
602	&& *psz == '0'
603	&& (psz[1] == 'x' \|\| psz[1] == 'X')
604	&& g_auchDigits[(unsigned char)psz[2]] < 16)
605	psz += 2;
606
607	/*
608	* Interpret the value.
609	* Note: We only support ascii digits at this time... :-)
610	*/
611	iShift = g_auchShift[uBase]; /** @todo test this, it's probably not 100% right yet. */
612	pszValue = psz; /* (Prefix and sign doesn't count in the digit counting.) */
613	rc = VINF_SUCCESS;
614	i64 = 0;
615	while ((uch = (unsigned char)*psz) != 0)
616	{
617	unsigned char chDigit = g_auchDigits[uch];
618	int64_t i64Prev;
619
620	if (chDigit >= uBase)
621	break;
622
623	i64Prev = i64;
624	i64 *= uBase;
625	i64 += chDigit;
626	if (i64Prev > i64 \|\| (i64Prev >> iShift))
627	rc = VWRN_NUMBER_TOO_BIG;
628	psz++;
629	}
630
631	if (!fPositive)
632	i64 = -i64;
633
634	if (pi64)
635	*pi64 = i64;
636
637	if (psz == pszValue)
638	rc = VERR_NO_DIGITS;
639
640	if (ppszNext)
641	ppszNext = (char )psz;
642
643	/*
644	* Warn about trailing chars/spaces.
645	*/
646	if ( rc == VINF_SUCCESS
647	&& *psz)
648	{
649	while (psz == ' ' \|\| psz == '\t')
650	psz++;
651	rc = *psz ? VWRN_TRAILING_CHARS : VWRN_TRAILING_SPACES;
652	}
653
654	return rc;
655	}
656	RT_EXPORT_SYMBOL(RTStrToInt64Ex);
657
658
659	/**
660	* Converts a string representation of a number to a 64-bit signed number,
661	* making sure the full string is converted.
662	*
663	* @returns iprt status code.
664	* Warnings are used to indicate convertion problems.
665	* @retval VWRN_NUMBER_TOO_BIG
666	* @retval VINF_SUCCESS
667	* @retval VERR_TRAILING_CHARS
668	* @retval VERR_TRAILING_SPACES
669	* @retval VERR_NO_DIGITS
670	*
671	* @param pszValue Pointer to the string value.
672	* @param uBase The base of the representation used.
673	* If the function will look for known prefixes before defaulting to 10.
674	* @param pi64 Where to store the converted number. (optional)
675	*/
676	RTDECL(int) RTStrToInt64Full(const char pszValue, unsigned uBase, int64_t pi64)
677	{
678	char *psz;
679	int rc = RTStrToInt64Ex(pszValue, &psz, uBase, pi64);
680	if (RT_SUCCESS(rc) && *psz)
681	{
682	if (rc == VWRN_TRAILING_CHARS \|\| rc == VWRN_TRAILING_SPACES)
683	rc = -rc;
684	else
685	{
686	while (psz == ' ' \|\| psz == '\t')
687	psz++;
688	rc = *psz ? VERR_TRAILING_CHARS : VERR_TRAILING_SPACES;
689	}
690	}
691	return rc;
692	}
693	RT_EXPORT_SYMBOL(RTStrToInt64Full);
694
695
696	/**
697	* Converts a string representation of a number to a 64-bit signed number.
698	* The base is guessed.
699	*
700	* @returns 64-bit signed number on success.
701	* @returns 0 on failure.
702	* @param pszValue Pointer to the string value.
703	*/
704	RTDECL(int64_t) RTStrToInt64(const char *pszValue)
705	{
706	int64_t i64;
707	int rc = RTStrToInt64Ex(pszValue, NULL, 0, &i64);
708	if (RT_SUCCESS(rc))
709	return i64;
710	return 0;
711	}
712	RT_EXPORT_SYMBOL(RTStrToInt64);
713
714
715	/**
716	* Converts a string representation of a number to a 32-bit signed number.
717	*
718	* @returns iprt status code.
719	* Warnings are used to indicate convertion problems.
720	* @retval VWRN_NUMBER_TOO_BIG
721	* @retval VWRN_TRAILING_CHARS
722	* @retval VWRN_TRAILING_SPACES
723	* @retval VINF_SUCCESS
724	* @retval VERR_NO_DIGITS
725	*
726	* @param pszValue Pointer to the string value.
727	* @param ppszNext Where to store the pointer to the first char following the number. (Optional)
728	* @param uBase The base of the representation used.
729	* If the function will look for known prefixes before defaulting to 10.
730	* @param pi32 Where to store the converted number. (optional)
731	*/
732	RTDECL(int) RTStrToInt32Ex(const char pszValue, char ppszNext, unsigned uBase, int32_t pi32)
733	{
734	int64_t i64;
735	int rc = RTStrToInt64Ex(pszValue, ppszNext, uBase, &i64);
736	if (RT_SUCCESS(rc))
737	{
738	int32_t i32 = (int32_t)i64;
739	if (i64 != (int64_t)i32)
740	rc = VWRN_NUMBER_TOO_BIG;
741	}
742	if (pi32)
743	*pi32 = (int32_t)i64;
744	return rc;
745	}
746	RT_EXPORT_SYMBOL(RTStrToInt32Ex);
747
748
749	/**
750	* Converts a string representation of a number to a 32-bit signed number,
751	* making sure the full string is converted.
752	*
753	* @returns iprt status code.
754	* Warnings are used to indicate convertion problems.
755	* @retval VWRN_NUMBER_TOO_BIG
756	* @retval VINF_SUCCESS
757	* @retval VERR_TRAILING_CHARS
758	* @retval VERR_TRAILING_SPACES
759	* @retval VERR_NO_DIGITS
760	*
761	* @param pszValue Pointer to the string value.
762	* @param uBase The base of the representation used.
763	* If the function will look for known prefixes before defaulting to 10.
764	* @param pi32 Where to store the converted number. (optional)
765	*/
766	RTDECL(int) RTStrToInt32Full(const char pszValue, unsigned uBase, int32_t pi32)
767	{
768	int64_t i64;
769	int rc = RTStrToInt64Full(pszValue, uBase, &i64);
770	if (RT_SUCCESS(rc))
771	{
772	int32_t i32 = (int32_t)i64;
773	if (i64 != (int64_t)i32)
774	rc = VWRN_NUMBER_TOO_BIG;
775	}
776	if (pi32)
777	*pi32 = (int32_t)i64;
778	return rc;
779	}
780	RT_EXPORT_SYMBOL(RTStrToInt32Full);
781
782
783	/**
784	* Converts a string representation of a number to a 32-bit signed number.
785	* The base is guessed.
786	*
787	* @returns 32-bit signed number on success.
788	* @returns 0 on failure.
789	* @param pszValue Pointer to the string value.
790	*/
791	RTDECL(int32_t) RTStrToInt32(const char *pszValue)
792	{
793	int32_t i32;
794	int rc = RTStrToInt32Ex(pszValue, NULL, 0, &i32);
795	if (RT_SUCCESS(rc))
796	return i32;
797	return 0;
798	}
799	RT_EXPORT_SYMBOL(RTStrToInt32);
800
801
802	/**
803	* Converts a string representation of a number to a 16-bit signed number.
804	*
805	* @returns iprt status code.
806	* Warnings are used to indicate convertion problems.
807	* @retval VWRN_NUMBER_TOO_BIG
808	* @retval VWRN_TRAILING_CHARS
809	* @retval VWRN_TRAILING_SPACES
810	* @retval VINF_SUCCESS
811	* @retval VERR_NO_DIGITS
812	*
813	* @param pszValue Pointer to the string value.
814	* @param ppszNext Where to store the pointer to the first char following the number. (Optional)
815	* @param uBase The base of the representation used.
816	* If the function will look for known prefixes before defaulting to 10.
817	* @param pi16 Where to store the converted number. (optional)
818	*/
819	RTDECL(int) RTStrToInt16Ex(const char pszValue, char ppszNext, unsigned uBase, int16_t pi16)
820	{
821	int64_t i64;
822	int rc = RTStrToInt64Ex(pszValue, ppszNext, uBase, &i64);
823	if (RT_SUCCESS(rc))
824	{
825	int16_t i16 = (int16_t)i64;
826	if (i64 != (int64_t)i16)
827	rc = VWRN_NUMBER_TOO_BIG;
828	}
829	if (pi16)
830	*pi16 = (int16_t)i64;
831	return rc;
832	}
833	RT_EXPORT_SYMBOL(RTStrToInt16Ex);
834
835
836	/**
837	* Converts a string representation of a number to a 16-bit signed number,
838	* making sure the full string is converted.
839	*
840	* @returns iprt status code.
841	* Warnings are used to indicate convertion problems.
842	* @retval VWRN_NUMBER_TOO_BIG
843	* @retval VINF_SUCCESS
844	* @retval VERR_TRAILING_CHARS
845	* @retval VERR_TRAILING_SPACES
846	* @retval VERR_NO_DIGITS
847	*
848	* @param pszValue Pointer to the string value.
849	* @param uBase The base of the representation used.
850	* If the function will look for known prefixes before defaulting to 10.
851	* @param pi16 Where to store the converted number. (optional)
852	*/
853	RTDECL(int) RTStrToInt16Full(const char pszValue, unsigned uBase, int16_t pi16)
854	{
855	int64_t i64;
856	int rc = RTStrToInt64Full(pszValue, uBase, &i64);
857	if (RT_SUCCESS(rc))
858	{
859	int16_t i16 = (int16_t)i64;
860	if (i64 != (int64_t)i16)
861	rc = VWRN_NUMBER_TOO_BIG;
862	}
863	if (pi16)
864	*pi16 = (int16_t)i64;
865	return rc;
866	}
867	RT_EXPORT_SYMBOL(RTStrToInt16Full);
868
869
870	/**
871	* Converts a string representation of a number to a 16-bit signed number.
872	* The base is guessed.
873	*
874	* @returns 16-bit signed number on success.
875	* @returns 0 on failure.
876	* @param pszValue Pointer to the string value.
877	*/
878	RTDECL(int16_t) RTStrToInt16(const char *pszValue)
879	{
880	int16_t i16;
881	int rc = RTStrToInt16Ex(pszValue, NULL, 0, &i16);
882	if (RT_SUCCESS(rc))
883	return i16;
884	return 0;
885	}
886	RT_EXPORT_SYMBOL(RTStrToInt16);
887
888
889	/**
890	* Converts a string representation of a number to a 8-bit signed number.
891	*
892	* @returns iprt status code.
893	* Warnings are used to indicate convertion problems.
894	* @retval VWRN_NUMBER_TOO_BIG
895	* @retval VWRN_TRAILING_CHARS
896	* @retval VWRN_TRAILING_SPACES
897	* @retval VINF_SUCCESS
898	* @retval VERR_NO_DIGITS
899	*
900	* @param pszValue Pointer to the string value.
901	* @param ppszNext Where to store the pointer to the first char following the number. (Optional)
902	* @param uBase The base of the representation used.
903	* If the function will look for known prefixes before defaulting to 10.
904	* @param pi8 Where to store the converted number. (optional)
905	*/
906	RTDECL(int) RTStrToInt8Ex(const char pszValue, char ppszNext, unsigned uBase, int8_t pi8)
907	{
908	int64_t i64;
909	int rc = RTStrToInt64Ex(pszValue, ppszNext, uBase, &i64);
910	if (RT_SUCCESS(rc))
911	{
912	int8_t i8 = (int8_t)i64;
913	if (i64 != (int64_t)i8)
914	rc = VWRN_NUMBER_TOO_BIG;
915	}
916	if (pi8)
917	*pi8 = (int8_t)i64;
918	return rc;
919	}
920	RT_EXPORT_SYMBOL(RTStrToInt8Ex);
921
922
923	/**
924	* Converts a string representation of a number to a 8-bit signed number,
925	* making sure the full string is converted.
926	*
927	* @returns iprt status code.
928	* Warnings are used to indicate convertion problems.
929	* @retval VWRN_NUMBER_TOO_BIG
930	* @retval VINF_SUCCESS
931	* @retval VERR_TRAILING_CHARS
932	* @retval VERR_TRAILING_SPACES
933	* @retval VERR_NO_DIGITS
934	*
935	* @param pszValue Pointer to the string value.
936	* @param uBase The base of the representation used.
937	* If the function will look for known prefixes before defaulting to 10.
938	* @param pi8 Where to store the converted number. (optional)
939	*/
940	RTDECL(int) RTStrToInt8Full(const char pszValue, unsigned uBase, int8_t pi8)
941	{
942	int64_t i64;
943	int rc = RTStrToInt64Full(pszValue, uBase, &i64);
944	if (RT_SUCCESS(rc))
945	{
946	int8_t i8 = (int8_t)i64;
947	if (i64 != (int64_t)i8)
948	rc = VWRN_NUMBER_TOO_BIG;
949	}
950	if (pi8)
951	*pi8 = (int8_t)i64;
952	return rc;
953	}
954	RT_EXPORT_SYMBOL(RTStrToInt8Full);
955
956
957	/**
958	* Converts a string representation of a number to a 8-bit signed number.
959	* The base is guessed.
960	*
961	* @returns 8-bit signed number on success.
962	* @returns 0 on failure.
963	* @param pszValue Pointer to the string value.
964	*/
965	RTDECL(int8_t) RTStrToInt8(const char *pszValue)
966	{
967	int8_t i8;
968	int rc = RTStrToInt8Ex(pszValue, NULL, 0, &i8);
969	if (RT_SUCCESS(rc))
970	return i8;
971	return 0;
972	}
973	RT_EXPORT_SYMBOL(RTStrToInt8);
974

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source: vbox/trunk/src/VBox/Runtime/common/string/strtonum.cpp@ 25240

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