strformatnum.cpp@ 62477

Last change on this file since 62477 was 62477, checked in by vboxsync, 8 years ago
(C) 2016
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 8.0 KB

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1	/* $Id: strformatnum.cpp 62477 2016-07-22 18:27:37Z vboxsync $ */
2	/** @file
3	* IPRT - String Formatter, Single Numbers.
4	*/
5
6	/*
7	* Copyright (C) 2010-2016 Oracle Corporation
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
27
28	/*********************************************************************************************************************************
29	* Header Files *
30	*********************************************************************************************************************************/
31	#define LOG_GROUP RTLOGGROUP_STRING
32	#include <iprt/string.h>
33	#include "internal/iprt.h"
34
35	#include <iprt/assert.h>
36	#include "internal/string.h"
37
38
39	RTDECL(ssize_t) RTStrFormatU8(char *pszBuf, size_t cbBuf, uint8_t u8Value, unsigned int uiBase,
40	signed int cchWidth, signed int cchPrecision, uint32_t fFlags)
41	{
42	fFlags &= ~RTSTR_F_BIT_MASK;
43	fFlags \|= RTSTR_F_8BIT;
44
45	ssize_t cchRet;
46	if (cbBuf >= 64)
47	cchRet = RTStrFormatNumber(pszBuf, u8Value, uiBase, cchWidth, cchPrecision, fFlags);
48	else
49	{
50	char szTmp[64];
51	cchRet = RTStrFormatNumber(szTmp, u8Value, uiBase, cchWidth, cchPrecision, fFlags);
52	if ((size_t)cchRet < cbBuf)
53	memcpy(pszBuf, szTmp, cchRet + 1);
54	else
55	{
56	if (cbBuf)
57	{
58	memcpy(pszBuf, szTmp, cbBuf - 1);
59	pszBuf[cbBuf - 1] = '\0';
60	}
61	cchRet = VERR_BUFFER_OVERFLOW;
62	}
63	}
64	return cchRet;
65	}
66
67
68	RTDECL(ssize_t) RTStrFormatU16(char *pszBuf, size_t cbBuf, uint16_t u16Value, unsigned int uiBase,
69	signed int cchWidth, signed int cchPrecision, uint32_t fFlags)
70	{
71	fFlags &= ~RTSTR_F_BIT_MASK;
72	fFlags \|= RTSTR_F_16BIT;
73
74	ssize_t cchRet;
75	if (cbBuf >= 64)
76	cchRet = RTStrFormatNumber(pszBuf, u16Value, uiBase, cchWidth, cchPrecision, fFlags);
77	else
78	{
79	char szTmp[64];
80	cchRet = RTStrFormatNumber(szTmp, u16Value, uiBase, cchWidth, cchPrecision, fFlags);
81	if ((size_t)cchRet <= cbBuf)
82	memcpy(pszBuf, szTmp, cchRet + 1);
83	else
84	{
85	if (cbBuf)
86	{
87	memcpy(pszBuf, szTmp, cbBuf - 1);
88	pszBuf[cbBuf - 1] = '\0';
89	}
90	cchRet = VERR_BUFFER_OVERFLOW;
91	}
92	}
93	return cchRet;
94	}
95
96
97	RTDECL(ssize_t) RTStrFormatU32(char *pszBuf, size_t cbBuf, uint32_t u32Value, unsigned int uiBase,
98	signed int cchWidth, signed int cchPrecision, uint32_t fFlags)
99	{
100	fFlags &= ~RTSTR_F_BIT_MASK;
101	fFlags \|= RTSTR_F_32BIT;
102
103	ssize_t cchRet;
104	if (cbBuf >= 64)
105	cchRet = RTStrFormatNumber(pszBuf, u32Value, uiBase, cchWidth, cchPrecision, fFlags);
106	else
107	{
108	char szTmp[64];
109	cchRet = RTStrFormatNumber(szTmp, u32Value, uiBase, cchWidth, cchPrecision, fFlags);
110	if ((size_t)cchRet <= cbBuf)
111	memcpy(pszBuf, szTmp, cchRet + 1);
112	else
113	{
114	if (cbBuf)
115	{
116	memcpy(pszBuf, szTmp, cbBuf - 1);
117	pszBuf[cbBuf - 1] = '\0';
118	}
119	cchRet = VERR_BUFFER_OVERFLOW;
120	}
121	}
122	return cchRet;
123	}
124
125
126	RTDECL(ssize_t) RTStrFormatU64(char *pszBuf, size_t cbBuf, uint64_t u64Value, unsigned int uiBase,
127	signed int cchWidth, signed int cchPrecision, uint32_t fFlags)
128	{
129	fFlags &= ~RTSTR_F_BIT_MASK;
130	fFlags \|= RTSTR_F_64BIT;
131
132	ssize_t cchRet;
133	if (cbBuf >= 64)
134	cchRet = RTStrFormatNumber(pszBuf, u64Value, uiBase, cchWidth, cchPrecision, fFlags);
135	else
136	{
137	char szTmp[64];
138	cchRet = RTStrFormatNumber(szTmp, u64Value, uiBase, cchWidth, cchPrecision, fFlags);
139	if ((size_t)cchRet <= cbBuf)
140	memcpy(pszBuf, szTmp, cchRet + 1);
141	else
142	{
143	if (cbBuf)
144	{
145	memcpy(pszBuf, szTmp, cbBuf - 1);
146	pszBuf[cbBuf - 1] = '\0';
147	}
148	cchRet = VERR_BUFFER_OVERFLOW;
149	}
150	}
151	return cchRet;
152	}
153
154
155	RTDECL(ssize_t) RTStrFormatU128(char *pszBuf, size_t cbBuf, PCRTUINT128U pu128, unsigned int uiBase,
156	signed int cchWidth, signed int cchPrecision, uint32_t fFlags)
157	{
158	NOREF(cchWidth); NOREF(cchPrecision);
159	if (uiBase != 16)
160	fFlags \|= RTSTR_F_SPECIAL;
161	fFlags &= ~RTSTR_F_BIT_MASK;
162
163	char szTmp[64+32];
164	size_t cchFirst = RTStrFormatNumber(szTmp, pu128->s.Hi, 16, 0, 0, fFlags \| RTSTR_F_64BIT);
165	size_t cchSecond = RTStrFormatNumber(&szTmp[cchFirst], pu128->s.Lo, 16, 8, 0,
166	(fFlags \| RTSTR_F_64BIT \| RTSTR_F_ZEROPAD) & ~RTSTR_F_SPECIAL);
167	int rc = RTStrCopy(pszBuf, cbBuf, szTmp);
168	if (RT_FAILURE(rc))
169	return rc;
170	return cchFirst + cchSecond;
171	}
172
173
174	RTDECL(ssize_t) RTStrFormatR80u2(char *pszBuf, size_t cbBuf, PCRTFLOAT80U2 pr80Value, signed int cchWidth,
175	signed int cchPrecision, uint32_t fFlags)
176	{
177	NOREF(cchWidth); NOREF(cchPrecision); NOREF(fFlags);
178	char szTmp[160];
179
180	char *pszTmp = szTmp;
181	if (pr80Value->s.fSign)
182	*pszTmp++ = '-';
183	else
184	*pszTmp++ = '+';
185
186	if (pr80Value->s.uExponent == 0)
187	{
188	if ( !pr80Value->sj64.u63Fraction
189	&& pr80Value->sj64.fInteger)
190	*pszTmp++ = '0';
191	/* else: Denormal, handled way below. */
192	}
193	else if (pr80Value->sj64.uExponent == UINT16_C(0x7fff))
194	{
195	/** @todo Figure out Pseudo inf/nan... */
196	if (pr80Value->sj64.fInteger)
197	*pszTmp++ = 'P';
198	if (pr80Value->sj64.u63Fraction == 0)
199	{
200	*pszTmp++ = 'I';
201	*pszTmp++ = 'n';
202	*pszTmp++ = 'f';
203	}
204	else
205	{
206	*pszTmp++ = 'N';
207	*pszTmp++ = 'a';
208	*pszTmp++ = 'N';
209	}
210	}
211	if (pszTmp != &szTmp[1])
212	*pszTmp = '\0';
213	else
214	{
215	*pszTmp++ = pr80Value->sj64.fInteger ? '1' : '0';
216	*pszTmp++ = 'm';
217	pszTmp += RTStrFormatNumber(pszTmp, pr80Value->sj64.u63Fraction, 16, 2+16, 0,
218	RTSTR_F_SPECIAL \| RTSTR_F_ZEROPAD \| RTSTR_F_64BIT);
219
220	*pszTmp++ = 'e';
221	pszTmp += RTStrFormatNumber(pszTmp, (int32_t)pr80Value->sj64.uExponent - 16383, 10, 0, 0,
222	RTSTR_F_ZEROPAD \| RTSTR_F_32BIT \| RTSTR_F_VALSIGNED);
223	}
224
225	/*
226	* Copy out the result.
227	*/
228	ssize_t cchRet = pszTmp - &szTmp[0];
229	if ((size_t)cchRet <= cbBuf)
230	memcpy(pszBuf, szTmp, cchRet + 1);
231	else
232	{
233	if (cbBuf)
234	{
235	memcpy(pszBuf, szTmp, cbBuf - 1);
236	pszBuf[cbBuf - 1] = '\0';
237	}
238	cchRet = VERR_BUFFER_OVERFLOW;
239	}
240	return cchRet;
241	}
242
243
244	RTDECL(ssize_t) RTStrFormatR80(char *pszBuf, size_t cbBuf, PCRTFLOAT80U pr80Value, signed int cchWidth,
245	signed int cchPrecision, uint32_t fFlags)
246	{
247	RTFLOAT80U2 r80ValueU2;
248	RT_ZERO(r80ValueU2);
249	r80ValueU2.s.fSign = pr80Value->s.fSign;
250	r80ValueU2.s.uExponent = pr80Value->s.uExponent;
251	r80ValueU2.s.u64Mantissa = pr80Value->s.u64Mantissa;
252	return RTStrFormatR80u2(pszBuf, cbBuf, &r80ValueU2, cchWidth, cchPrecision, fFlags);
253	}
254

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source: vbox/trunk/src/VBox/Runtime/common/string/strformatnum.cpp@ 62477

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