1 | /* $Id: strtonum.cpp 79562 2019-07-05 20:37:19Z vboxsync $ */
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2 | /** @file
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3 | * IPRT - String To Number Conversion.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2006-2019 Oracle Corporation
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8 | *
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9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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10 | * available from http://www.virtualbox.org. This file is free software;
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11 | * you can redistribute it and/or modify it under the terms of the GNU
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12 | * General Public License (GPL) as published by the Free Software
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13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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16 | *
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17 | * The contents of this file may alternatively be used under the terms
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18 | * of the Common Development and Distribution License Version 1.0
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19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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20 | * VirtualBox OSE distribution, in which case the provisions of the
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21 | * CDDL are applicable instead of those of the GPL.
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22 | *
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23 | * You may elect to license modified versions of this file under the
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24 | * terms and conditions of either the GPL or the CDDL or both.
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25 | */
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26 |
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27 |
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28 | /*********************************************************************************************************************************
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29 | * Header Files *
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30 | *********************************************************************************************************************************/
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31 | #include <iprt/string.h>
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32 | #include "internal/iprt.h"
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33 |
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34 | #include <iprt/assert.h>
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35 | #include <iprt/ctype.h> /* needed for RT_C_IS_DIGIT */
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36 | #include <iprt/err.h>
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37 |
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38 |
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39 | /*********************************************************************************************************************************
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40 | * Global Variables *
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41 | *********************************************************************************************************************************/
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42 | /** 8-bit char -> digit.
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43 | * Non-digits have values 255 (most), 254 (zero), 253 (colon) and 252 (space).
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44 | */
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45 | static const unsigned char g_auchDigits[256] =
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46 | {
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47 | 254,255,255,255,255,255,255,255,255,252,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
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48 | 252,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,253,255,255,255,255,255,
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49 | 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,
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50 | 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,
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51 | 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,
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52 | 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,
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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,
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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
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55 | };
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56 |
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57 | /** Approximated overflow shift checks. */
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58 | static const char g_auchShift[36] =
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59 | {
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60 | /* 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 */
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61 | 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
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62 | };
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63 |
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64 | /*
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65 | #include <stdio.h>
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66 | int main()
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67 | {
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68 | int i;
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69 | printf("static const unsigned char g_auchDigits[256] =\n"
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70 | "{");
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71 | for (i = 0; i < 256; i++)
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72 | {
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73 | int ch = 255;
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74 | if (i >= '0' && i <= '9')
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75 | ch = i - '0';
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76 | else if (i >= 'a' && i <= 'z')
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77 | ch = i - 'a' + 10;
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78 | else if (i >= 'A' && i <= 'Z')
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79 | ch = i - 'A' + 10;
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80 | else if (i == 0)
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81 | ch = 254;
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82 | else if (i == ':')
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83 | ch = 253;
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84 | else if (i == ' ' || i == '\t')
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85 | ch = 252;
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86 | if (i == 0)
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87 | printf("\n %3d", ch);
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88 | else if ((i % 32) == 0)
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89 | printf(",\n %3d", ch);
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90 | else
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91 | printf(",%3d", ch);
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92 | }
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93 | printf("\n"
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94 | "};\n");
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95 | return 0;
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96 | }
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97 | */
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98 |
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99 |
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100 | /**
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101 | * Converts a string representation of a number to a 64-bit unsigned number.
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102 | *
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103 | * @returns iprt status code.
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104 | * Warnings are used to indicate conversion problems.
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105 | * @retval VWRN_NUMBER_TOO_BIG
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106 | * @retval VWRN_NEGATIVE_UNSIGNED
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107 | * @retval VWRN_TRAILING_CHARS
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108 | * @retval VWRN_TRAILING_SPACES
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109 | * @retval VINF_SUCCESS
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110 | * @retval VERR_NO_DIGITS
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111 | *
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112 | * @param pszValue Pointer to the string value.
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113 | * @param ppszNext Where to store the pointer to the first char following the number. (Optional)
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114 | * @param uBase The base of the representation used.
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115 | * If the function will look for known prefixes before defaulting to 10.
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116 | * @param pu64 Where to store the converted number. (optional)
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117 | */
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118 | RTDECL(int) RTStrToUInt64Ex(const char *pszValue, char **ppszNext, unsigned uBase, uint64_t *pu64)
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119 | {
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120 | const char *psz = pszValue;
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121 | int iShift;
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122 | int rc;
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123 | uint64_t u64;
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124 | unsigned char uch;
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125 |
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126 | /*
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127 | * Positive/Negative stuff.
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128 | */
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129 | bool fPositive = true;
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130 | for (;; psz++)
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131 | {
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132 | if (*psz == '+')
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133 | fPositive = true;
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134 | else if (*psz == '-')
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135 | fPositive = !fPositive;
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136 | else
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137 | break;
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138 | }
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139 |
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140 | /*
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141 | * Check for hex prefix.
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142 | */
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143 | if (!uBase)
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144 | {
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145 | if ( psz[0] == '0'
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146 | && (psz[1] == 'x' || psz[1] == 'X')
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147 | && g_auchDigits[(unsigned char)psz[2]] < 16)
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148 | {
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149 | uBase = 16;
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150 | psz += 2;
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151 | }
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152 | else if ( psz[0] == '0'
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153 | && g_auchDigits[(unsigned char)psz[1]] < 8)
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154 | {
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155 | uBase = 8;
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156 | psz++;
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157 | }
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158 | else
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159 | uBase = 10;
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160 | }
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161 | else if ( uBase == 16
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162 | && psz[0] == '0'
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163 | && (psz[1] == 'x' || psz[1] == 'X')
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164 | && g_auchDigits[(unsigned char)psz[2]] < 16)
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165 | psz += 2;
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166 |
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167 | /*
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168 | * Interpret the value.
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169 | * Note: We only support ascii digits at this time... :-)
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170 | */
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171 | iShift = g_auchShift[uBase];
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172 | pszValue = psz; /* (Prefix and sign doesn't count in the digit counting.) */
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173 | rc = VINF_SUCCESS;
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174 | u64 = 0;
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175 | while ((uch = (unsigned char)*psz) != 0)
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176 | {
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177 | unsigned char chDigit = g_auchDigits[uch];
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178 | uint64_t u64Prev;
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179 |
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180 | if (chDigit >= uBase)
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181 | break;
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182 |
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183 | u64Prev = u64;
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184 | u64 *= uBase;
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185 | u64 += chDigit;
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186 | if (u64Prev > u64 || (u64Prev >> iShift))
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187 | rc = VWRN_NUMBER_TOO_BIG;
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188 | psz++;
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189 | }
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190 |
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191 | if (!fPositive)
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192 | {
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193 | if (rc == VINF_SUCCESS)
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194 | rc = VWRN_NEGATIVE_UNSIGNED;
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195 | u64 = -(int64_t)u64;
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196 | }
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197 |
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198 | if (pu64)
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199 | *pu64 = u64;
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200 |
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201 | if (psz == pszValue)
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202 | rc = VERR_NO_DIGITS;
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203 |
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204 | if (ppszNext)
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205 | *ppszNext = (char *)psz;
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206 |
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207 | /*
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208 | * Warn about trailing chars/spaces.
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209 | */
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210 | if ( rc == VINF_SUCCESS
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211 | && *psz)
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212 | {
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213 | while (*psz == ' ' || *psz == '\t')
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214 | psz++;
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215 | rc = *psz ? VWRN_TRAILING_CHARS : VWRN_TRAILING_SPACES;
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216 | }
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217 |
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218 | return rc;
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219 | }
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220 | RT_EXPORT_SYMBOL(RTStrToUInt64Ex);
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221 |
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222 |
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223 | /**
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224 | * Converts a string representation of a number to a 64-bit unsigned number,
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225 | * making sure the full string is converted.
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226 | *
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227 | * @returns iprt status code.
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228 | * Warnings are used to indicate conversion problems.
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229 | * @retval VWRN_NUMBER_TOO_BIG
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230 | * @retval VWRN_NEGATIVE_UNSIGNED
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231 | * @retval VINF_SUCCESS
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232 | * @retval VERR_NO_DIGITS
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233 | * @retval VERR_TRAILING_SPACES
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234 | * @retval VERR_TRAILING_CHARS
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235 | *
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236 | * @param pszValue Pointer to the string value.
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237 | * @param uBase The base of the representation used.
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238 | * If the function will look for known prefixes before defaulting to 10.
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239 | * @param pu64 Where to store the converted number. (optional)
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240 | */
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241 | RTDECL(int) RTStrToUInt64Full(const char *pszValue, unsigned uBase, uint64_t *pu64)
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242 | {
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243 | char *psz;
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244 | int rc = RTStrToUInt64Ex(pszValue, &psz, uBase, pu64);
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245 | if (RT_SUCCESS(rc) && *psz)
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246 | {
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247 | if (rc == VWRN_TRAILING_CHARS || rc == VWRN_TRAILING_SPACES)
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248 | rc = -rc;
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249 | else
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250 | {
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251 | while (*psz == ' ' || *psz == '\t')
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252 | psz++;
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253 | rc = *psz ? VERR_TRAILING_CHARS : VERR_TRAILING_SPACES;
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254 | }
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255 | }
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256 | return rc;
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257 | }
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258 | RT_EXPORT_SYMBOL(RTStrToUInt64Full);
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259 |
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260 |
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261 | /**
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262 | * Converts a string representation of a number to a 64-bit unsigned number.
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263 | * The base is guessed.
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264 | *
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265 | * @returns 64-bit unsigned number on success.
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266 | * @returns 0 on failure.
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267 | * @param pszValue Pointer to the string value.
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268 | */
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269 | RTDECL(uint64_t) RTStrToUInt64(const char *pszValue)
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270 | {
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271 | uint64_t u64;
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272 | int rc = RTStrToUInt64Ex(pszValue, NULL, 0, &u64);
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273 | if (RT_SUCCESS(rc))
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274 | return u64;
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275 | return 0;
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276 | }
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277 | RT_EXPORT_SYMBOL(RTStrToUInt64);
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278 |
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279 |
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280 | /**
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281 | * Converts a string representation of a number to a 32-bit unsigned number.
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282 | *
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283 | * @returns iprt status code.
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284 | * Warnings are used to indicate conversion problems.
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285 | * @retval VWRN_NUMBER_TOO_BIG
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286 | * @retval VWRN_NEGATIVE_UNSIGNED
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287 | * @retval VWRN_TRAILING_CHARS
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288 | * @retval VWRN_TRAILING_SPACES
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289 | * @retval VINF_SUCCESS
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290 | * @retval VERR_NO_DIGITS
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291 | *
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292 | * @param pszValue Pointer to the string value.
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293 | * @param ppszNext Where to store the pointer to the first char following the number. (Optional)
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294 | * @param uBase The base of the representation used.
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295 | * If the function will look for known prefixes before defaulting to 10.
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296 | * @param pu32 Where to store the converted number. (optional)
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297 | */
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298 | RTDECL(int) RTStrToUInt32Ex(const char *pszValue, char **ppszNext, unsigned uBase, uint32_t *pu32)
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299 | {
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300 | uint64_t u64;
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301 | int rc = RTStrToUInt64Ex(pszValue, ppszNext, uBase, &u64);
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302 | if (RT_SUCCESS(rc))
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303 | {
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304 | if (u64 & ~0xffffffffULL)
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305 | rc = VWRN_NUMBER_TOO_BIG;
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306 | }
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307 | if (pu32)
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308 | *pu32 = (uint32_t)u64;
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309 | return rc;
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310 | }
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311 | RT_EXPORT_SYMBOL(RTStrToUInt32Ex);
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312 |
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313 |
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314 | /**
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315 | * Converts a string representation of a number to a 32-bit unsigned number,
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316 | * making sure the full string is converted.
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317 | *
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318 | * @returns iprt status code.
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319 | * Warnings are used to indicate conversion problems.
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320 | * @retval VWRN_NUMBER_TOO_BIG
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321 | * @retval VWRN_NEGATIVE_UNSIGNED
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322 | * @retval VINF_SUCCESS
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323 | * @retval VERR_NO_DIGITS
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324 | * @retval VERR_TRAILING_SPACES
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325 | * @retval VERR_TRAILING_CHARS
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326 | *
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327 | * @param pszValue Pointer to the string value.
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328 | * @param uBase The base of the representation used.
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329 | * If the function will look for known prefixes before defaulting to 10.
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330 | * @param pu32 Where to store the converted number. (optional)
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331 | */
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332 | RTDECL(int) RTStrToUInt32Full(const char *pszValue, unsigned uBase, uint32_t *pu32)
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333 | {
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334 | uint64_t u64;
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335 | int rc = RTStrToUInt64Full(pszValue, uBase, &u64);
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336 | if (RT_SUCCESS(rc))
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337 | {
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338 | if (u64 & ~0xffffffffULL)
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339 | rc = VWRN_NUMBER_TOO_BIG;
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340 | }
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341 | if (pu32)
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342 | *pu32 = (uint32_t)u64;
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343 | return rc;
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344 | }
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345 | RT_EXPORT_SYMBOL(RTStrToUInt32Full);
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346 |
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347 |
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348 | /**
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349 | * Converts a string representation of a number to a 64-bit unsigned number.
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350 | * The base is guessed.
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351 | *
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352 | * @returns 32-bit unsigned number on success.
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353 | * @returns 0 on failure.
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354 | * @param pszValue Pointer to the string value.
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355 | */
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356 | RTDECL(uint32_t) RTStrToUInt32(const char *pszValue)
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357 | {
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358 | uint32_t u32;
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359 | int rc = RTStrToUInt32Ex(pszValue, NULL, 0, &u32);
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360 | if (RT_SUCCESS(rc))
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361 | return u32;
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362 | return 0;
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363 | }
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364 | RT_EXPORT_SYMBOL(RTStrToUInt32);
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365 |
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366 |
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367 | /**
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368 | * Converts a string representation of a number to a 16-bit unsigned number.
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369 | *
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370 | * @returns iprt status code.
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371 | * Warnings are used to indicate conversion problems.
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372 | * @retval VWRN_NUMBER_TOO_BIG
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373 | * @retval VWRN_NEGATIVE_UNSIGNED
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374 | * @retval VWRN_TRAILING_CHARS
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375 | * @retval VWRN_TRAILING_SPACES
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376 | * @retval VINF_SUCCESS
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377 | * @retval VERR_NO_DIGITS
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378 | *
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379 | * @param pszValue Pointer to the string value.
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380 | * @param ppszNext Where to store the pointer to the first char following the number. (Optional)
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381 | * @param uBase The base of the representation used.
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382 | * If the function will look for known prefixes before defaulting to 10.
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383 | * @param pu16 Where to store the converted number. (optional)
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384 | */
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385 | RTDECL(int) RTStrToUInt16Ex(const char *pszValue, char **ppszNext, unsigned uBase, uint16_t *pu16)
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386 | {
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387 | uint64_t u64;
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388 | int rc = RTStrToUInt64Ex(pszValue, ppszNext, uBase, &u64);
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389 | if (RT_SUCCESS(rc))
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390 | {
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391 | if (u64 & ~0xffffULL)
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392 | rc = VWRN_NUMBER_TOO_BIG;
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393 | }
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394 | if (pu16)
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395 | *pu16 = (uint16_t)u64;
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396 | return rc;
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397 | }
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398 | RT_EXPORT_SYMBOL(RTStrToUInt16Ex);
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399 |
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400 |
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401 | /**
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402 | * Converts a string representation of a number to a 16-bit unsigned number,
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403 | * making sure the full string is converted.
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404 | *
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405 | * @returns iprt status code.
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406 | * Warnings are used to indicate conversion problems.
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407 | * @retval VWRN_NUMBER_TOO_BIG
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408 | * @retval VWRN_NEGATIVE_UNSIGNED
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409 | * @retval VINF_SUCCESS
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410 | * @retval VERR_NO_DIGITS
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411 | * @retval VERR_TRAILING_SPACES
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412 | * @retval VERR_TRAILING_CHARS
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413 | *
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414 | * @param pszValue Pointer to the string value.
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415 | * @param uBase The base of the representation used.
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416 | * If the function will look for known prefixes before defaulting to 10.
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417 | * @param pu16 Where to store the converted number. (optional)
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418 | */
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419 | RTDECL(int) RTStrToUInt16Full(const char *pszValue, unsigned uBase, uint16_t *pu16)
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420 | {
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421 | uint64_t u64;
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422 | int rc = RTStrToUInt64Full(pszValue, uBase, &u64);
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423 | if (RT_SUCCESS(rc))
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424 | {
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425 | if (u64 & ~0xffffULL)
|
---|
426 | rc = VWRN_NUMBER_TOO_BIG;
|
---|
427 | }
|
---|
428 | if (pu16)
|
---|
429 | *pu16 = (uint16_t)u64;
|
---|
430 | return rc;
|
---|
431 | }
|
---|
432 | RT_EXPORT_SYMBOL(RTStrToUInt16Full);
|
---|
433 |
|
---|
434 |
|
---|
435 | /**
|
---|
436 | * Converts a string representation of a number to a 16-bit unsigned number.
|
---|
437 | * The base is guessed.
|
---|
438 | *
|
---|
439 | * @returns 16-bit unsigned number on success.
|
---|
440 | * @returns 0 on failure.
|
---|
441 | * @param pszValue Pointer to the string value.
|
---|
442 | */
|
---|
443 | RTDECL(uint16_t) RTStrToUInt16(const char *pszValue)
|
---|
444 | {
|
---|
445 | uint16_t u16;
|
---|
446 | int rc = RTStrToUInt16Ex(pszValue, NULL, 0, &u16);
|
---|
447 | if (RT_SUCCESS(rc))
|
---|
448 | return u16;
|
---|
449 | return 0;
|
---|
450 | }
|
---|
451 | RT_EXPORT_SYMBOL(RTStrToUInt16);
|
---|
452 |
|
---|
453 |
|
---|
454 | /**
|
---|
455 | * Converts a string representation of a number to a 8-bit unsigned number.
|
---|
456 | *
|
---|
457 | * @returns iprt status code.
|
---|
458 | * Warnings are used to indicate conversion problems.
|
---|
459 | * @retval VWRN_NUMBER_TOO_BIG
|
---|
460 | * @retval VWRN_NEGATIVE_UNSIGNED
|
---|
461 | * @retval VWRN_TRAILING_CHARS
|
---|
462 | * @retval VWRN_TRAILING_SPACES
|
---|
463 | * @retval VINF_SUCCESS
|
---|
464 | * @retval VERR_NO_DIGITS
|
---|
465 | *
|
---|
466 | * @param pszValue Pointer to the string value.
|
---|
467 | * @param ppszNext Where to store the pointer to the first char following the number. (Optional)
|
---|
468 | * @param uBase The base of the representation used.
|
---|
469 | * If the function will look for known prefixes before defaulting to 10.
|
---|
470 | * @param pu8 Where to store the converted number. (optional)
|
---|
471 | */
|
---|
472 | RTDECL(int) RTStrToUInt8Ex(const char *pszValue, char **ppszNext, unsigned uBase, uint8_t *pu8)
|
---|
473 | {
|
---|
474 | uint64_t u64;
|
---|
475 | int rc = RTStrToUInt64Ex(pszValue, ppszNext, uBase, &u64);
|
---|
476 | if (RT_SUCCESS(rc))
|
---|
477 | {
|
---|
478 | if (u64 & ~0xffULL)
|
---|
479 | rc = VWRN_NUMBER_TOO_BIG;
|
---|
480 | }
|
---|
481 | if (pu8)
|
---|
482 | *pu8 = (uint8_t)u64;
|
---|
483 | return rc;
|
---|
484 | }
|
---|
485 | RT_EXPORT_SYMBOL(RTStrToUInt8Ex);
|
---|
486 |
|
---|
487 |
|
---|
488 | /**
|
---|
489 | * Converts a string representation of a number to a 8-bit unsigned number,
|
---|
490 | * making sure the full string is converted.
|
---|
491 | *
|
---|
492 | * @returns iprt status code.
|
---|
493 | * Warnings are used to indicate conversion problems.
|
---|
494 | * @retval VWRN_NUMBER_TOO_BIG
|
---|
495 | * @retval VWRN_NEGATIVE_UNSIGNED
|
---|
496 | * @retval VINF_SUCCESS
|
---|
497 | * @retval VERR_NO_DIGITS
|
---|
498 | * @retval VERR_TRAILING_SPACES
|
---|
499 | * @retval VERR_TRAILING_CHARS
|
---|
500 | *
|
---|
501 | * @param pszValue Pointer to the string value.
|
---|
502 | * @param uBase The base of the representation used.
|
---|
503 | * If the function will look for known prefixes before defaulting to 10.
|
---|
504 | * @param pu8 Where to store the converted number. (optional)
|
---|
505 | */
|
---|
506 | RTDECL(int) RTStrToUInt8Full(const char *pszValue, unsigned uBase, uint8_t *pu8)
|
---|
507 | {
|
---|
508 | uint64_t u64;
|
---|
509 | int rc = RTStrToUInt64Full(pszValue, uBase, &u64);
|
---|
510 | if (RT_SUCCESS(rc))
|
---|
511 | {
|
---|
512 | if (u64 & ~0xffULL)
|
---|
513 | rc = VWRN_NUMBER_TOO_BIG;
|
---|
514 | }
|
---|
515 | if (pu8)
|
---|
516 | *pu8 = (uint8_t)u64;
|
---|
517 | return rc;
|
---|
518 | }
|
---|
519 | RT_EXPORT_SYMBOL(RTStrToUInt8Full);
|
---|
520 |
|
---|
521 |
|
---|
522 | /**
|
---|
523 | * Converts a string representation of a number to a 8-bit unsigned number.
|
---|
524 | * The base is guessed.
|
---|
525 | *
|
---|
526 | * @returns 8-bit unsigned number on success.
|
---|
527 | * @returns 0 on failure.
|
---|
528 | * @param pszValue Pointer to the string value.
|
---|
529 | */
|
---|
530 | RTDECL(uint8_t) RTStrToUInt8(const char *pszValue)
|
---|
531 | {
|
---|
532 | uint8_t u8;
|
---|
533 | int rc = RTStrToUInt8Ex(pszValue, NULL, 0, &u8);
|
---|
534 | if (RT_SUCCESS(rc))
|
---|
535 | return u8;
|
---|
536 | return 0;
|
---|
537 | }
|
---|
538 | RT_EXPORT_SYMBOL(RTStrToUInt8);
|
---|
539 |
|
---|
540 |
|
---|
541 |
|
---|
542 |
|
---|
543 |
|
---|
544 |
|
---|
545 |
|
---|
546 | /**
|
---|
547 | * Converts a string representation of a number to a 64-bit signed number.
|
---|
548 | *
|
---|
549 | * @returns iprt status code.
|
---|
550 | * Warnings are used to indicate conversion problems.
|
---|
551 | * @retval VWRN_NUMBER_TOO_BIG
|
---|
552 | * @retval VWRN_TRAILING_CHARS
|
---|
553 | * @retval VWRN_TRAILING_SPACES
|
---|
554 | * @retval VINF_SUCCESS
|
---|
555 | * @retval VERR_NO_DIGITS
|
---|
556 | *
|
---|
557 | * @param pszValue Pointer to the string value.
|
---|
558 | * @param ppszNext Where to store the pointer to the first char following the number. (Optional)
|
---|
559 | * @param uBase The base of the representation used.
|
---|
560 | * If the function will look for known prefixes before defaulting to 10.
|
---|
561 | * @param pi64 Where to store the converted number. (optional)
|
---|
562 | */
|
---|
563 | RTDECL(int) RTStrToInt64Ex(const char *pszValue, char **ppszNext, unsigned uBase, int64_t *pi64)
|
---|
564 | {
|
---|
565 | const char *psz = pszValue;
|
---|
566 | int iShift;
|
---|
567 | int rc;
|
---|
568 | uint64_t u64;
|
---|
569 | unsigned char uch;
|
---|
570 |
|
---|
571 | /*
|
---|
572 | * Positive/Negative stuff.
|
---|
573 | */
|
---|
574 | bool fPositive = true;
|
---|
575 | for (;; psz++)
|
---|
576 | {
|
---|
577 | if (*psz == '+')
|
---|
578 | fPositive = true;
|
---|
579 | else if (*psz == '-')
|
---|
580 | fPositive = !fPositive;
|
---|
581 | else
|
---|
582 | break;
|
---|
583 | }
|
---|
584 |
|
---|
585 | /*
|
---|
586 | * Check for hex prefix.
|
---|
587 | */
|
---|
588 | if (!uBase)
|
---|
589 | {
|
---|
590 | if ( *psz == '0'
|
---|
591 | && (psz[1] == 'x' || psz[1] == 'X')
|
---|
592 | && g_auchDigits[(unsigned char)psz[2]] < 16)
|
---|
593 | {
|
---|
594 | uBase = 16;
|
---|
595 | psz += 2;
|
---|
596 | }
|
---|
597 | else if ( *psz == '0'
|
---|
598 | && g_auchDigits[(unsigned char)psz[1]] < 8)
|
---|
599 | {
|
---|
600 | uBase = 8;
|
---|
601 | psz++;
|
---|
602 | }
|
---|
603 | else
|
---|
604 | uBase = 10;
|
---|
605 | }
|
---|
606 | else if ( uBase == 16
|
---|
607 | && *psz == '0'
|
---|
608 | && (psz[1] == 'x' || psz[1] == 'X')
|
---|
609 | && g_auchDigits[(unsigned char)psz[2]] < 16)
|
---|
610 | psz += 2;
|
---|
611 |
|
---|
612 | /*
|
---|
613 | * Interpret the value.
|
---|
614 | * Note: We only support ascii digits at this time... :-)
|
---|
615 | */
|
---|
616 | iShift = g_auchShift[uBase];
|
---|
617 | pszValue = psz; /* (Prefix and sign doesn't count in the digit counting.) */
|
---|
618 | rc = VINF_SUCCESS;
|
---|
619 | u64 = 0;
|
---|
620 | while ((uch = (unsigned char)*psz) != 0)
|
---|
621 | {
|
---|
622 | unsigned char chDigit = g_auchDigits[uch];
|
---|
623 | uint64_t u64Prev;
|
---|
624 |
|
---|
625 | if (chDigit >= uBase)
|
---|
626 | break;
|
---|
627 |
|
---|
628 | u64Prev = u64;
|
---|
629 | u64 *= uBase;
|
---|
630 | u64 += chDigit;
|
---|
631 | if (u64Prev > u64 || (u64Prev >> iShift))
|
---|
632 | rc = VWRN_NUMBER_TOO_BIG;
|
---|
633 | psz++;
|
---|
634 | }
|
---|
635 |
|
---|
636 | if ( !(u64 & RT_BIT_64(63))
|
---|
637 | || (!fPositive && u64 == RT_BIT_64(63)) )
|
---|
638 | { /* likely */ }
|
---|
639 | else
|
---|
640 | rc = VWRN_NUMBER_TOO_BIG;
|
---|
641 |
|
---|
642 | if (pi64)
|
---|
643 | *pi64 = fPositive ? u64 : -(int64_t)u64;
|
---|
644 |
|
---|
645 | if (psz == pszValue)
|
---|
646 | rc = VERR_NO_DIGITS;
|
---|
647 |
|
---|
648 | if (ppszNext)
|
---|
649 | *ppszNext = (char *)psz;
|
---|
650 |
|
---|
651 | /*
|
---|
652 | * Warn about trailing chars/spaces.
|
---|
653 | */
|
---|
654 | if ( rc == VINF_SUCCESS
|
---|
655 | && *psz)
|
---|
656 | {
|
---|
657 | while (*psz == ' ' || *psz == '\t')
|
---|
658 | psz++;
|
---|
659 | rc = *psz ? VWRN_TRAILING_CHARS : VWRN_TRAILING_SPACES;
|
---|
660 | }
|
---|
661 |
|
---|
662 | return rc;
|
---|
663 | }
|
---|
664 | RT_EXPORT_SYMBOL(RTStrToInt64Ex);
|
---|
665 |
|
---|
666 |
|
---|
667 | /**
|
---|
668 | * Converts a string representation of a number to a 64-bit signed number,
|
---|
669 | * making sure the full string is converted.
|
---|
670 | *
|
---|
671 | * @returns iprt status code.
|
---|
672 | * Warnings are used to indicate conversion problems.
|
---|
673 | * @retval VWRN_NUMBER_TOO_BIG
|
---|
674 | * @retval VINF_SUCCESS
|
---|
675 | * @retval VERR_TRAILING_CHARS
|
---|
676 | * @retval VERR_TRAILING_SPACES
|
---|
677 | * @retval VERR_NO_DIGITS
|
---|
678 | *
|
---|
679 | * @param pszValue Pointer to the string value.
|
---|
680 | * @param uBase The base of the representation used.
|
---|
681 | * If the function will look for known prefixes before defaulting to 10.
|
---|
682 | * @param pi64 Where to store the converted number. (optional)
|
---|
683 | */
|
---|
684 | RTDECL(int) RTStrToInt64Full(const char *pszValue, unsigned uBase, int64_t *pi64)
|
---|
685 | {
|
---|
686 | char *psz;
|
---|
687 | int rc = RTStrToInt64Ex(pszValue, &psz, uBase, pi64);
|
---|
688 | if (RT_SUCCESS(rc) && *psz)
|
---|
689 | {
|
---|
690 | if (rc == VWRN_TRAILING_CHARS || rc == VWRN_TRAILING_SPACES)
|
---|
691 | rc = -rc;
|
---|
692 | else
|
---|
693 | {
|
---|
694 | while (*psz == ' ' || *psz == '\t')
|
---|
695 | psz++;
|
---|
696 | rc = *psz ? VERR_TRAILING_CHARS : VERR_TRAILING_SPACES;
|
---|
697 | }
|
---|
698 | }
|
---|
699 | return rc;
|
---|
700 | }
|
---|
701 | RT_EXPORT_SYMBOL(RTStrToInt64Full);
|
---|
702 |
|
---|
703 |
|
---|
704 | /**
|
---|
705 | * Converts a string representation of a number to a 64-bit signed number.
|
---|
706 | * The base is guessed.
|
---|
707 | *
|
---|
708 | * @returns 64-bit signed number on success.
|
---|
709 | * @returns 0 on failure.
|
---|
710 | * @param pszValue Pointer to the string value.
|
---|
711 | */
|
---|
712 | RTDECL(int64_t) RTStrToInt64(const char *pszValue)
|
---|
713 | {
|
---|
714 | int64_t i64;
|
---|
715 | int rc = RTStrToInt64Ex(pszValue, NULL, 0, &i64);
|
---|
716 | if (RT_SUCCESS(rc))
|
---|
717 | return i64;
|
---|
718 | return 0;
|
---|
719 | }
|
---|
720 | RT_EXPORT_SYMBOL(RTStrToInt64);
|
---|
721 |
|
---|
722 |
|
---|
723 | /**
|
---|
724 | * Converts a string representation of a number to a 32-bit signed number.
|
---|
725 | *
|
---|
726 | * @returns iprt status code.
|
---|
727 | * Warnings are used to indicate conversion problems.
|
---|
728 | * @retval VWRN_NUMBER_TOO_BIG
|
---|
729 | * @retval VWRN_TRAILING_CHARS
|
---|
730 | * @retval VWRN_TRAILING_SPACES
|
---|
731 | * @retval VINF_SUCCESS
|
---|
732 | * @retval VERR_NO_DIGITS
|
---|
733 | *
|
---|
734 | * @param pszValue Pointer to the string value.
|
---|
735 | * @param ppszNext Where to store the pointer to the first char following the number. (Optional)
|
---|
736 | * @param uBase The base of the representation used.
|
---|
737 | * If the function will look for known prefixes before defaulting to 10.
|
---|
738 | * @param pi32 Where to store the converted number. (optional)
|
---|
739 | */
|
---|
740 | RTDECL(int) RTStrToInt32Ex(const char *pszValue, char **ppszNext, unsigned uBase, int32_t *pi32)
|
---|
741 | {
|
---|
742 | int64_t i64;
|
---|
743 | int rc = RTStrToInt64Ex(pszValue, ppszNext, uBase, &i64);
|
---|
744 | if (RT_SUCCESS(rc))
|
---|
745 | {
|
---|
746 | int32_t i32 = (int32_t)i64;
|
---|
747 | if (i64 != (int64_t)i32)
|
---|
748 | rc = VWRN_NUMBER_TOO_BIG;
|
---|
749 | }
|
---|
750 | if (pi32)
|
---|
751 | *pi32 = (int32_t)i64;
|
---|
752 | return rc;
|
---|
753 | }
|
---|
754 | RT_EXPORT_SYMBOL(RTStrToInt32Ex);
|
---|
755 |
|
---|
756 |
|
---|
757 | /**
|
---|
758 | * Converts a string representation of a number to a 32-bit signed number,
|
---|
759 | * making sure the full string is converted.
|
---|
760 | *
|
---|
761 | * @returns iprt status code.
|
---|
762 | * Warnings are used to indicate conversion problems.
|
---|
763 | * @retval VWRN_NUMBER_TOO_BIG
|
---|
764 | * @retval VINF_SUCCESS
|
---|
765 | * @retval VERR_TRAILING_CHARS
|
---|
766 | * @retval VERR_TRAILING_SPACES
|
---|
767 | * @retval VERR_NO_DIGITS
|
---|
768 | *
|
---|
769 | * @param pszValue Pointer to the string value.
|
---|
770 | * @param uBase The base of the representation used.
|
---|
771 | * If the function will look for known prefixes before defaulting to 10.
|
---|
772 | * @param pi32 Where to store the converted number. (optional)
|
---|
773 | */
|
---|
774 | RTDECL(int) RTStrToInt32Full(const char *pszValue, unsigned uBase, int32_t *pi32)
|
---|
775 | {
|
---|
776 | int64_t i64;
|
---|
777 | int rc = RTStrToInt64Full(pszValue, uBase, &i64);
|
---|
778 | if (RT_SUCCESS(rc))
|
---|
779 | {
|
---|
780 | int32_t i32 = (int32_t)i64;
|
---|
781 | if (i64 != (int64_t)i32)
|
---|
782 | rc = VWRN_NUMBER_TOO_BIG;
|
---|
783 | }
|
---|
784 | if (pi32)
|
---|
785 | *pi32 = (int32_t)i64;
|
---|
786 | return rc;
|
---|
787 | }
|
---|
788 | RT_EXPORT_SYMBOL(RTStrToInt32Full);
|
---|
789 |
|
---|
790 |
|
---|
791 | /**
|
---|
792 | * Converts a string representation of a number to a 32-bit signed number.
|
---|
793 | * The base is guessed.
|
---|
794 | *
|
---|
795 | * @returns 32-bit signed number on success.
|
---|
796 | * @returns 0 on failure.
|
---|
797 | * @param pszValue Pointer to the string value.
|
---|
798 | */
|
---|
799 | RTDECL(int32_t) RTStrToInt32(const char *pszValue)
|
---|
800 | {
|
---|
801 | int32_t i32;
|
---|
802 | int rc = RTStrToInt32Ex(pszValue, NULL, 0, &i32);
|
---|
803 | if (RT_SUCCESS(rc))
|
---|
804 | return i32;
|
---|
805 | return 0;
|
---|
806 | }
|
---|
807 | RT_EXPORT_SYMBOL(RTStrToInt32);
|
---|
808 |
|
---|
809 |
|
---|
810 | /**
|
---|
811 | * Converts a string representation of a number to a 16-bit signed number.
|
---|
812 | *
|
---|
813 | * @returns iprt status code.
|
---|
814 | * Warnings are used to indicate conversion problems.
|
---|
815 | * @retval VWRN_NUMBER_TOO_BIG
|
---|
816 | * @retval VWRN_TRAILING_CHARS
|
---|
817 | * @retval VWRN_TRAILING_SPACES
|
---|
818 | * @retval VINF_SUCCESS
|
---|
819 | * @retval VERR_NO_DIGITS
|
---|
820 | *
|
---|
821 | * @param pszValue Pointer to the string value.
|
---|
822 | * @param ppszNext Where to store the pointer to the first char following the number. (Optional)
|
---|
823 | * @param uBase The base of the representation used.
|
---|
824 | * If the function will look for known prefixes before defaulting to 10.
|
---|
825 | * @param pi16 Where to store the converted number. (optional)
|
---|
826 | */
|
---|
827 | RTDECL(int) RTStrToInt16Ex(const char *pszValue, char **ppszNext, unsigned uBase, int16_t *pi16)
|
---|
828 | {
|
---|
829 | int64_t i64;
|
---|
830 | int rc = RTStrToInt64Ex(pszValue, ppszNext, uBase, &i64);
|
---|
831 | if (RT_SUCCESS(rc))
|
---|
832 | {
|
---|
833 | int16_t i16 = (int16_t)i64;
|
---|
834 | if (i64 != (int64_t)i16)
|
---|
835 | rc = VWRN_NUMBER_TOO_BIG;
|
---|
836 | }
|
---|
837 | if (pi16)
|
---|
838 | *pi16 = (int16_t)i64;
|
---|
839 | return rc;
|
---|
840 | }
|
---|
841 | RT_EXPORT_SYMBOL(RTStrToInt16Ex);
|
---|
842 |
|
---|
843 |
|
---|
844 | /**
|
---|
845 | * Converts a string representation of a number to a 16-bit signed number,
|
---|
846 | * making sure the full string is converted.
|
---|
847 | *
|
---|
848 | * @returns iprt status code.
|
---|
849 | * Warnings are used to indicate conversion problems.
|
---|
850 | * @retval VWRN_NUMBER_TOO_BIG
|
---|
851 | * @retval VINF_SUCCESS
|
---|
852 | * @retval VERR_TRAILING_CHARS
|
---|
853 | * @retval VERR_TRAILING_SPACES
|
---|
854 | * @retval VERR_NO_DIGITS
|
---|
855 | *
|
---|
856 | * @param pszValue Pointer to the string value.
|
---|
857 | * @param uBase The base of the representation used.
|
---|
858 | * If the function will look for known prefixes before defaulting to 10.
|
---|
859 | * @param pi16 Where to store the converted number. (optional)
|
---|
860 | */
|
---|
861 | RTDECL(int) RTStrToInt16Full(const char *pszValue, unsigned uBase, int16_t *pi16)
|
---|
862 | {
|
---|
863 | int64_t i64;
|
---|
864 | int rc = RTStrToInt64Full(pszValue, uBase, &i64);
|
---|
865 | if (RT_SUCCESS(rc))
|
---|
866 | {
|
---|
867 | int16_t i16 = (int16_t)i64;
|
---|
868 | if (i64 != (int64_t)i16)
|
---|
869 | rc = VWRN_NUMBER_TOO_BIG;
|
---|
870 | }
|
---|
871 | if (pi16)
|
---|
872 | *pi16 = (int16_t)i64;
|
---|
873 | return rc;
|
---|
874 | }
|
---|
875 | RT_EXPORT_SYMBOL(RTStrToInt16Full);
|
---|
876 |
|
---|
877 |
|
---|
878 | /**
|
---|
879 | * Converts a string representation of a number to a 16-bit signed number.
|
---|
880 | * The base is guessed.
|
---|
881 | *
|
---|
882 | * @returns 16-bit signed number on success.
|
---|
883 | * @returns 0 on failure.
|
---|
884 | * @param pszValue Pointer to the string value.
|
---|
885 | */
|
---|
886 | RTDECL(int16_t) RTStrToInt16(const char *pszValue)
|
---|
887 | {
|
---|
888 | int16_t i16;
|
---|
889 | int rc = RTStrToInt16Ex(pszValue, NULL, 0, &i16);
|
---|
890 | if (RT_SUCCESS(rc))
|
---|
891 | return i16;
|
---|
892 | return 0;
|
---|
893 | }
|
---|
894 | RT_EXPORT_SYMBOL(RTStrToInt16);
|
---|
895 |
|
---|
896 |
|
---|
897 | /**
|
---|
898 | * Converts a string representation of a number to a 8-bit signed number.
|
---|
899 | *
|
---|
900 | * @returns iprt status code.
|
---|
901 | * Warnings are used to indicate conversion problems.
|
---|
902 | * @retval VWRN_NUMBER_TOO_BIG
|
---|
903 | * @retval VWRN_TRAILING_CHARS
|
---|
904 | * @retval VWRN_TRAILING_SPACES
|
---|
905 | * @retval VINF_SUCCESS
|
---|
906 | * @retval VERR_NO_DIGITS
|
---|
907 | *
|
---|
908 | * @param pszValue Pointer to the string value.
|
---|
909 | * @param ppszNext Where to store the pointer to the first char following the number. (Optional)
|
---|
910 | * @param uBase The base of the representation used.
|
---|
911 | * If the function will look for known prefixes before defaulting to 10.
|
---|
912 | * @param pi8 Where to store the converted number. (optional)
|
---|
913 | */
|
---|
914 | RTDECL(int) RTStrToInt8Ex(const char *pszValue, char **ppszNext, unsigned uBase, int8_t *pi8)
|
---|
915 | {
|
---|
916 | int64_t i64;
|
---|
917 | int rc = RTStrToInt64Ex(pszValue, ppszNext, uBase, &i64);
|
---|
918 | if (RT_SUCCESS(rc))
|
---|
919 | {
|
---|
920 | int8_t i8 = (int8_t)i64;
|
---|
921 | if (i64 != (int64_t)i8)
|
---|
922 | rc = VWRN_NUMBER_TOO_BIG;
|
---|
923 | }
|
---|
924 | if (pi8)
|
---|
925 | *pi8 = (int8_t)i64;
|
---|
926 | return rc;
|
---|
927 | }
|
---|
928 | RT_EXPORT_SYMBOL(RTStrToInt8Ex);
|
---|
929 |
|
---|
930 |
|
---|
931 | /**
|
---|
932 | * Converts a string representation of a number to a 8-bit signed number,
|
---|
933 | * making sure the full string is converted.
|
---|
934 | *
|
---|
935 | * @returns iprt status code.
|
---|
936 | * Warnings are used to indicate conversion problems.
|
---|
937 | * @retval VWRN_NUMBER_TOO_BIG
|
---|
938 | * @retval VINF_SUCCESS
|
---|
939 | * @retval VERR_TRAILING_CHARS
|
---|
940 | * @retval VERR_TRAILING_SPACES
|
---|
941 | * @retval VERR_NO_DIGITS
|
---|
942 | *
|
---|
943 | * @param pszValue Pointer to the string value.
|
---|
944 | * @param uBase The base of the representation used.
|
---|
945 | * If the function will look for known prefixes before defaulting to 10.
|
---|
946 | * @param pi8 Where to store the converted number. (optional)
|
---|
947 | */
|
---|
948 | RTDECL(int) RTStrToInt8Full(const char *pszValue, unsigned uBase, int8_t *pi8)
|
---|
949 | {
|
---|
950 | int64_t i64;
|
---|
951 | int rc = RTStrToInt64Full(pszValue, uBase, &i64);
|
---|
952 | if (RT_SUCCESS(rc))
|
---|
953 | {
|
---|
954 | int8_t i8 = (int8_t)i64;
|
---|
955 | if (i64 != (int64_t)i8)
|
---|
956 | rc = VWRN_NUMBER_TOO_BIG;
|
---|
957 | }
|
---|
958 | if (pi8)
|
---|
959 | *pi8 = (int8_t)i64;
|
---|
960 | return rc;
|
---|
961 | }
|
---|
962 | RT_EXPORT_SYMBOL(RTStrToInt8Full);
|
---|
963 |
|
---|
964 |
|
---|
965 | /**
|
---|
966 | * Converts a string representation of a number to a 8-bit signed number.
|
---|
967 | * The base is guessed.
|
---|
968 | *
|
---|
969 | * @returns 8-bit signed number on success.
|
---|
970 | * @returns 0 on failure.
|
---|
971 | * @param pszValue Pointer to the string value.
|
---|
972 | */
|
---|
973 | RTDECL(int8_t) RTStrToInt8(const char *pszValue)
|
---|
974 | {
|
---|
975 | int8_t i8;
|
---|
976 | int rc = RTStrToInt8Ex(pszValue, NULL, 0, &i8);
|
---|
977 | if (RT_SUCCESS(rc))
|
---|
978 | return i8;
|
---|
979 | return 0;
|
---|
980 | }
|
---|
981 | RT_EXPORT_SYMBOL(RTStrToInt8);
|
---|
982 |
|
---|
983 |
|
---|
984 | RTDECL(int) RTStrConvertHexBytesEx(char const *pszHex, void *pv, size_t cb, uint32_t fFlags,
|
---|
985 | const char **ppszNext, size_t *pcbReturned)
|
---|
986 | {
|
---|
987 | size_t cbDst = cb;
|
---|
988 | uint8_t *pbDst = (uint8_t *)pv;
|
---|
989 | const unsigned char *pszSrc = (const unsigned char *)pszHex;
|
---|
990 | unsigned char uchDigit;
|
---|
991 |
|
---|
992 | if (pcbReturned)
|
---|
993 | *pcbReturned = 0;
|
---|
994 | if (ppszNext)
|
---|
995 | *ppszNext = NULL;
|
---|
996 | AssertPtrReturn(pszHex, VERR_INVALID_POINTER);
|
---|
997 | AssertReturn(!(fFlags & ~RTSTRCONVERTHEXBYTES_F_SEP_COLON), VERR_INVALID_FLAGS);
|
---|
998 |
|
---|
999 | if (fFlags & RTSTRCONVERTHEXBYTES_F_SEP_COLON)
|
---|
1000 | {
|
---|
1001 | /*
|
---|
1002 | * Optional colon separators.
|
---|
1003 | */
|
---|
1004 | bool fPrevColon = true; /* leading colon is taken to mean leading zero byte */
|
---|
1005 | for (;;)
|
---|
1006 | {
|
---|
1007 | /* Pick the next two digit from the string. */
|
---|
1008 | uchDigit = g_auchDigits[*pszSrc++];
|
---|
1009 | if (uchDigit >= 16)
|
---|
1010 | {
|
---|
1011 | if (uchDigit == 253 /* colon */)
|
---|
1012 | {
|
---|
1013 | Assert(pszSrc[-1] == ':');
|
---|
1014 | if (!fPrevColon)
|
---|
1015 | fPrevColon = true;
|
---|
1016 | /* Add zero byte if there is room. */
|
---|
1017 | else if (cbDst > 0)
|
---|
1018 | {
|
---|
1019 | cbDst--;
|
---|
1020 | *pbDst++ = 0;
|
---|
1021 | }
|
---|
1022 | else
|
---|
1023 | {
|
---|
1024 | if (pcbReturned)
|
---|
1025 | *pcbReturned = pbDst - (uint8_t *)pv;
|
---|
1026 | if (ppszNext)
|
---|
1027 | *ppszNext = (const char *)pszSrc - 1;
|
---|
1028 | return VERR_BUFFER_OVERFLOW;
|
---|
1029 | }
|
---|
1030 | continue;
|
---|
1031 | }
|
---|
1032 | else
|
---|
1033 | break;
|
---|
1034 | }
|
---|
1035 | else
|
---|
1036 | {
|
---|
1037 | /* Got one digit, check what comes next: */
|
---|
1038 | unsigned char const uchDigit2 = g_auchDigits[*pszSrc++];
|
---|
1039 | if (uchDigit2 < 16)
|
---|
1040 | {
|
---|
1041 | if (cbDst > 0)
|
---|
1042 | {
|
---|
1043 | *pbDst++ = (uchDigit << 4) | uchDigit2;
|
---|
1044 | cbDst--;
|
---|
1045 | fPrevColon = false;
|
---|
1046 | }
|
---|
1047 | else
|
---|
1048 | {
|
---|
1049 | if (pcbReturned)
|
---|
1050 | *pcbReturned = pbDst - (uint8_t *)pv;
|
---|
1051 | if (ppszNext)
|
---|
1052 | *ppszNext = (const char *)pszSrc - 1;
|
---|
1053 | return VERR_BUFFER_OVERFLOW;
|
---|
1054 | }
|
---|
1055 | }
|
---|
1056 | /* Lone digits are only allowed if following a colon or at the very start, because
|
---|
1057 | if there is more than one byte it ambigious whether it is the lead or tail byte
|
---|
1058 | that only has one digit in it.
|
---|
1059 | Note! This also ensures better compatibility with the no-separator variant
|
---|
1060 | (except for single digit strings, which are accepted here but not below). */
|
---|
1061 | else if (fPrevColon)
|
---|
1062 | {
|
---|
1063 | if (cbDst > 0)
|
---|
1064 | {
|
---|
1065 | *pbDst++ = uchDigit;
|
---|
1066 | cbDst--;
|
---|
1067 | }
|
---|
1068 | else
|
---|
1069 | {
|
---|
1070 | if (pcbReturned)
|
---|
1071 | *pcbReturned = pbDst - (uint8_t *)pv;
|
---|
1072 | if (ppszNext)
|
---|
1073 | *ppszNext = (const char *)pszSrc - 1;
|
---|
1074 | return VERR_BUFFER_OVERFLOW;
|
---|
1075 | }
|
---|
1076 | if (uchDigit2 == 253 /* colon */)
|
---|
1077 | {
|
---|
1078 | Assert(pszSrc[-1] == ':');
|
---|
1079 | fPrevColon = true;
|
---|
1080 | }
|
---|
1081 | else
|
---|
1082 | {
|
---|
1083 | fPrevColon = false;
|
---|
1084 | uchDigit = uchDigit2;
|
---|
1085 | break;
|
---|
1086 | }
|
---|
1087 | }
|
---|
1088 | else
|
---|
1089 | {
|
---|
1090 | if (pcbReturned)
|
---|
1091 | *pcbReturned = pbDst - (uint8_t *)pv;
|
---|
1092 | if (ppszNext)
|
---|
1093 | *ppszNext = (const char *)pszSrc - 2;
|
---|
1094 | return VERR_UNEVEN_INPUT;
|
---|
1095 | }
|
---|
1096 | }
|
---|
1097 | }
|
---|
1098 |
|
---|
1099 | /* Trailing colon means trailing zero byte: */
|
---|
1100 | if (fPrevColon)
|
---|
1101 | {
|
---|
1102 | if (cbDst > 0)
|
---|
1103 | {
|
---|
1104 | *pbDst++ = 0;
|
---|
1105 | cbDst--;
|
---|
1106 | }
|
---|
1107 | else
|
---|
1108 | {
|
---|
1109 | if (pcbReturned)
|
---|
1110 | *pcbReturned = pbDst - (uint8_t *)pv;
|
---|
1111 | if (ppszNext)
|
---|
1112 | *ppszNext = (const char *)pszSrc - 1;
|
---|
1113 | return VERR_BUFFER_OVERFLOW;
|
---|
1114 | }
|
---|
1115 | }
|
---|
1116 | }
|
---|
1117 | else
|
---|
1118 | {
|
---|
1119 | /*
|
---|
1120 | * No separators.
|
---|
1121 | */
|
---|
1122 | for (;;)
|
---|
1123 | {
|
---|
1124 | /* Pick the next two digit from the string. */
|
---|
1125 | uchDigit = g_auchDigits[*pszSrc++];
|
---|
1126 | if (uchDigit < 16)
|
---|
1127 | {
|
---|
1128 | unsigned char const uchDigit2 = g_auchDigits[*pszSrc++];
|
---|
1129 | if (uchDigit2 < 16)
|
---|
1130 | {
|
---|
1131 | /* Add the byte to the output buffer. */
|
---|
1132 | if (cbDst)
|
---|
1133 | {
|
---|
1134 | cbDst--;
|
---|
1135 | *pbDst++ = (uchDigit << 4) | uchDigit2;
|
---|
1136 | }
|
---|
1137 | else
|
---|
1138 | {
|
---|
1139 | if (pcbReturned)
|
---|
1140 | *pcbReturned = pbDst - (uint8_t *)pv;
|
---|
1141 | if (ppszNext)
|
---|
1142 | *ppszNext = (const char *)pszSrc - 2;
|
---|
1143 | return VERR_BUFFER_OVERFLOW;
|
---|
1144 | }
|
---|
1145 | }
|
---|
1146 | else
|
---|
1147 | {
|
---|
1148 | if (pcbReturned)
|
---|
1149 | *pcbReturned = pbDst - (uint8_t *)pv;
|
---|
1150 | if (ppszNext)
|
---|
1151 | *ppszNext = (const char *)pszSrc - 2;
|
---|
1152 | return VERR_UNEVEN_INPUT;
|
---|
1153 | }
|
---|
1154 | }
|
---|
1155 | else
|
---|
1156 | break;
|
---|
1157 | }
|
---|
1158 | }
|
---|
1159 |
|
---|
1160 | /*
|
---|
1161 | * End of hex bytes, look what comes next and figure out what to return.
|
---|
1162 | */
|
---|
1163 | if (pcbReturned)
|
---|
1164 | *pcbReturned = pbDst - (uint8_t *)pv;
|
---|
1165 | if (ppszNext)
|
---|
1166 | *ppszNext = (const char *)pszSrc - 1;
|
---|
1167 |
|
---|
1168 | if (uchDigit == 254)
|
---|
1169 | {
|
---|
1170 | Assert(pszSrc[-1] == '\0');
|
---|
1171 | if (cbDst == 0)
|
---|
1172 | return VINF_SUCCESS;
|
---|
1173 | return pcbReturned ? VINF_BUFFER_UNDERFLOW : VERR_BUFFER_UNDERFLOW;
|
---|
1174 | }
|
---|
1175 | Assert(pszSrc[-1] != '\0');
|
---|
1176 |
|
---|
1177 | if (cbDst != 0 && !pcbReturned)
|
---|
1178 | return VERR_BUFFER_UNDERFLOW;
|
---|
1179 |
|
---|
1180 | while (uchDigit == 252)
|
---|
1181 | {
|
---|
1182 | Assert(pszSrc[-1] == ' ' || pszSrc[-1] == '\t');
|
---|
1183 | uchDigit = g_auchDigits[*pszSrc++];
|
---|
1184 | }
|
---|
1185 |
|
---|
1186 | Assert(pszSrc[-1] == '\0' ? uchDigit == 254 : uchDigit != 254);
|
---|
1187 | return uchDigit == 254 ? VWRN_TRAILING_CHARS : VWRN_TRAILING_SPACES;
|
---|
1188 |
|
---|
1189 | }
|
---|
1190 | RT_EXPORT_SYMBOL(RTStrConvertHexBytesEx);
|
---|
1191 |
|
---|
1192 |
|
---|
1193 | RTDECL(int) RTStrConvertHexBytes(char const *pszHex, void *pv, size_t cb, uint32_t fFlags)
|
---|
1194 | {
|
---|
1195 | return RTStrConvertHexBytesEx(pszHex, pv, cb, fFlags, NULL /*ppszNext*/, NULL /*pcbReturned*/);
|
---|
1196 |
|
---|
1197 | }
|
---|
1198 | RT_EXPORT_SYMBOL(RTStrConvertHexBytes);
|
---|
1199 |
|
---|