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
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
|
/* $Id$ */
/** @file
* IPRT - Version String Parsing.
*/
/*
* Copyright (C) 2010 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
/*******************************************************************************
* Header Files *
*******************************************************************************/
#include <iprt/string.h>
#include "internal/iprt.h"
#include <iprt/assert.h>
#include <iprt/ctype.h>
#include <iprt/err.h>
/*******************************************************************************
* Defined Constants And Macros *
*******************************************************************************/
#define RTSTRVER_IS_PUNCTUACTION(ch) \
( (ch) == '_' || (ch) == '-' || (ch) == '+' || RT_C_IS_PUNCT(ch) )
/**
* Parses a out the next block from a version string.
*
* @returns true if numeric, false if not.
* @param ppszVer The string cursor, IN/OUT.
* @param pi32Value Where to return the value if numeric.
* @param pcchBlock Where to return the block length.
*/
static bool rtStrVersionParseBlock(const char **ppszVer, int32_t *pi32Value, size_t *pcchBlock)
{
const char *psz = *ppszVer;
/*
* Check for end-of-string.
*/
if (!*psz)
{
*pi32Value = 0;
*pcchBlock = 0;
return false;
}
/*
* Try convert the block to a number the simple way.
*/
char ch;
bool fNumeric = RT_C_IS_DIGIT(*psz);
if (fNumeric)
{
do
ch = *++psz;
while (ch && RT_C_IS_DIGIT(ch));
int rc = RTStrToInt32Ex(*ppszVer, NULL, 10, pi32Value);
if (RT_FAILURE(rc) || rc == VWRN_NUMBER_TOO_BIG)
{
AssertRC(rc);
fNumeric = false;
*pi32Value = 0;
}
}
else
{
/*
* Find the end of the current string. Make a special case for SVN
* revision numbers that immediately follows a release tag string.
*/
do
ch = *++psz;
while ( ch
&& !RT_C_IS_DIGIT(ch)
&& !RTSTRVER_IS_PUNCTUACTION(ch));
size_t cchBlock = psz - *ppszVer;
if ( cchBlock > 1
&& psz[-1] == 'r'
&& RT_C_IS_DIGIT(*psz))
{
psz--;
cchBlock--;
}
/*
* Translate standard pre release terms to negative values.
*/
static const struct
{
size_t cch;
const char *psz;
int32_t iValue;
} s_aTerms[] =
{
{ 2, "RC", -100000 },
{ 3, "PRE", -200000 },
{ 5, "GAMMA", -300000 },
{ 4, "BETA", -400000 },
{ 5, "ALPHA", -500000 }
};
int32_t iVal1 = 0;
for (unsigned i = 0; i < RT_ELEMENTS(s_aTerms); i++)
if ( cchBlock == s_aTerms[i].cch
&& !RTStrNCmp(s_aTerms[i].psz, *ppszVer, cchBlock))
{
iVal1 = s_aTerms[i].iValue;
break;
}
if (iVal1 != 0)
{
/*
* Does the prelease term have a trailing number?
* Add it assuming BETA == BETA1.
*/
if (RT_C_IS_DIGIT(*psz))
{
const char *psz2 = psz;
do
ch = *++psz;
while ( ch
&& RT_C_IS_DIGIT(ch)
&& !RTSTRVER_IS_PUNCTUACTION(ch));
int rc = RTStrToInt32Ex(psz2, NULL, 10, pi32Value);
if (RT_SUCCESS(rc) && rc != VWRN_NUMBER_TOO_BIG && *pi32Value)
iVal1 += *pi32Value - 1;
else
{
AssertRC(rc);
psz = psz2;
}
}
fNumeric = true;
}
*pi32Value = iVal1;
}
*pcchBlock = psz - *ppszVer;
/*
* Skip trailing punctuation.
*/
if (RTSTRVER_IS_PUNCTUACTION(*psz))
psz++;
*ppszVer = psz;
return fNumeric;
}
RTDECL(int) RTStrVersionCompare(const char *pszVer1, const char *pszVer2)
{
AssertPtr(pszVer1);
AssertPtr(pszVer2);
/*
* Do a parallel parse of the strings.
*/
while (*pszVer1 || *pszVer2)
{
const char *pszBlock1 = pszVer1;
size_t cchBlock1;
int32_t iVal1;
bool fNumeric1 = rtStrVersionParseBlock(&pszVer1, &iVal1, &cchBlock1);
const char *pszBlock2 = pszVer2;
size_t cchBlock2;
int32_t iVal2;
bool fNumeric2 = rtStrVersionParseBlock(&pszVer2, &iVal2, &cchBlock2);
if (fNumeric1 && fNumeric2)
{
if (iVal1 != iVal2)
return iVal1 < iVal2 ? -1 : 1;
}
else if ( fNumeric1 != fNumeric2
&& ( fNumeric1
? iVal1 == 0 && cchBlock2 == 0
: iVal2 == 0 && cchBlock1 == 0)
)
{
/*else: 1.0 == 1.0.0.0.0. */;
}
else if ( fNumeric1 != fNumeric2
&& (fNumeric1 ? iVal1 : iVal2) < 0)
{
/* Pre-release indicators are smaller than all other strings. */
return fNumeric1 ? -1 : 1;
}
else
{
int iDiff = RTStrNICmp(pszBlock1, pszBlock2, RT_MIN(cchBlock1, cchBlock2));
if (!iDiff && cchBlock1 != cchBlock2)
iDiff = cchBlock1 < cchBlock2 ? -1 : 1;
if (iDiff)
return iDiff < 0 ? -1 : 1;
}
}
return 0;
}
RT_EXPORT_SYMBOL(RTStrVersionCompare);
|
