1 | /*
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2 | * Unicode string manipulation functions
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3 | *
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4 | * Copyright 2000 Alexandre Julliard
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5 | */
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6 |
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7 | #include <windows.h>
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8 | #include <limits.h>
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9 | #include <stdio.h>
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10 | #include <ctype.h>
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11 |
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12 | #include "wine/unicode.h"
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13 |
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14 | int strcmpiW( const WCHAR *str1, const WCHAR *str2 )
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15 | {
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16 | for (;;)
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17 | {
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18 | int ret = toupperW(*str1) - toupperW(*str2);
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19 | if (ret || !*str1) return ret;
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20 | str1++;
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21 | str2++;
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22 | }
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23 | }
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24 |
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25 | int strncmpiW( const WCHAR *str1, const WCHAR *str2, int n )
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26 | {
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27 | int ret = 0;
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28 | for ( ; n > 0; n--, str1++, str2++)
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29 | if ((ret = toupperW(*str1) - toupperW(*str2)) || !*str1) break;
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30 | return ret;
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31 | }
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32 |
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33 | WCHAR *strstrW( const WCHAR *str, const WCHAR *sub )
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34 | {
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35 | while (*str)
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36 | {
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37 | const WCHAR *p1 = str, *p2 = sub;
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38 | while (*p1 && *p2 && *p1 == *p2) { p1++; p2++; }
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39 | if (!*p2) return (WCHAR *)str;
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40 | str++;
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41 | }
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42 | return NULL;
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43 | }
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44 |
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45 | /* strtolW and strtoulW implementation based on the GNU C library code */
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46 | /* Copyright (C) 1991,92,94,95,96,97,98,99,2000,2001 Free Software Foundation, Inc. */
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47 |
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48 | long int strtolW( const WCHAR *nptr, WCHAR **endptr, int base )
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49 | {
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50 | int negative;
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51 | register unsigned long int cutoff;
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52 | register unsigned int cutlim;
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53 | register unsigned long int i;
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54 | register const WCHAR *s;
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55 | register WCHAR c;
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56 | const WCHAR *save, *end;
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57 | int overflow;
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58 |
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59 | if (base < 0 || base == 1 || base > 36) return 0;
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60 |
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61 | save = s = nptr;
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62 |
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63 | /* Skip white space. */
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64 | while (isspaceW (*s))
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65 | ++s;
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66 | if (!*s) goto noconv;
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67 |
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68 | /* Check for a sign. */
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69 | negative = 0;
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70 | if (*s == '-')
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71 | {
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72 | negative = 1;
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73 | ++s;
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74 | }
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75 | else if (*s == '+')
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76 | ++s;
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77 |
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78 | /* Recognize number prefix and if BASE is zero, figure it out ourselves. */
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79 | if (*s == '0')
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80 | {
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81 | if ((base == 0 || base == 16) && toupperW(s[1]) == 'X')
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82 | {
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83 | s += 2;
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84 | base = 16;
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85 | }
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86 | else if (base == 0)
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87 | base = 8;
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88 | }
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89 | else if (base == 0)
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90 | base = 10;
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91 |
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92 | /* Save the pointer so we can check later if anything happened. */
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93 | save = s;
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94 | end = NULL;
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95 |
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96 | cutoff = ULONG_MAX / (unsigned long int) base;
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97 | cutlim = ULONG_MAX % (unsigned long int) base;
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98 |
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99 | overflow = 0;
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100 | i = 0;
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101 | c = *s;
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102 | for (;c != '\0'; c = *++s)
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103 | {
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104 | if (s == end)
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105 | break;
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106 | if (c >= '0' && c <= '9')
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107 | c -= '0';
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108 | else if (isalphaW (c))
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109 | c = toupperW (c) - 'A' + 10;
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110 | else
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111 | break;
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112 | if ((int) c >= base)
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113 | break;
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114 | /* Check for overflow. */
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115 | if (i > cutoff || (i == cutoff && c > cutlim))
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116 | overflow = 1;
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117 | else
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118 | {
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119 | i *= (unsigned long int) base;
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120 | i += c;
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121 | }
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122 | }
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123 |
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124 | /* Check if anything actually happened. */
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125 | if (s == save)
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126 | goto noconv;
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127 |
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128 | /* Store in ENDPTR the address of one character
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129 | past the last character we converted. */
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130 | if (endptr != NULL)
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131 | *endptr = (WCHAR *)s;
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132 |
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133 | /* Check for a value that is within the range of
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134 | `unsigned LONG int', but outside the range of `LONG int'. */
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135 | if (overflow == 0
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136 | && i > (negative
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137 | ? -((unsigned long int) (LONG_MIN + 1)) + 1
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138 | : (unsigned long int) LONG_MAX))
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139 | overflow = 1;
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140 |
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141 | if (overflow)
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142 | {
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143 | return negative ? LONG_MIN : LONG_MAX;
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144 | }
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145 |
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146 | /* Return the result of the appropriate sign. */
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147 | return negative ? -i : i;
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148 |
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149 | noconv:
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150 | /* We must handle a special case here: the base is 0 or 16 and the
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151 | first two characters are '0' and 'x', but the rest are no
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152 | hexadecimal digits. This is no error case. We return 0 and
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153 | ENDPTR points to the `x`. */
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154 | if (endptr != NULL)
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155 | {
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156 | if (save - nptr >= 2 && toupperW (save[-1]) == 'X'
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157 | && save[-2] == '0')
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158 | *endptr = (WCHAR *)&save[-1];
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159 | else
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160 | /* There was no number to convert. */
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161 | *endptr = (WCHAR *)nptr;
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162 | }
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163 |
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164 | return 0L;
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165 | }
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166 |
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167 | unsigned long int strtoulW( const WCHAR *nptr, WCHAR **endptr, int base )
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168 | {
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169 | int negative;
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170 | register unsigned long int cutoff;
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171 | register unsigned int cutlim;
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172 | register unsigned long int i;
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173 | register const WCHAR *s;
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174 | register WCHAR c;
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175 | const WCHAR *save, *end;
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176 | int overflow;
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177 |
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178 | if (base < 0 || base == 1 || base > 36) return 0;
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179 |
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180 | save = s = nptr;
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181 |
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182 | /* Skip white space. */
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183 | while (isspaceW (*s))
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184 | ++s;
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185 | if (!*s) goto noconv;
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186 |
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187 | /* Check for a sign. */
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188 | negative = 0;
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189 | if (*s == '-')
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190 | {
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191 | negative = 1;
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192 | ++s;
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193 | }
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194 | else if (*s == '+')
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195 | ++s;
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196 |
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197 | /* Recognize number prefix and if BASE is zero, figure it out ourselves. */
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198 | if (*s == '0')
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199 | {
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200 | if ((base == 0 || base == 16) && toupperW(s[1]) == 'X')
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201 | {
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202 | s += 2;
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203 | base = 16;
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204 | }
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205 | else if (base == 0)
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206 | base = 8;
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207 | }
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208 | else if (base == 0)
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209 | base = 10;
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210 |
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211 | /* Save the pointer so we can check later if anything happened. */
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212 | save = s;
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213 | end = NULL;
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214 |
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215 | cutoff = ULONG_MAX / (unsigned long int) base;
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216 | cutlim = ULONG_MAX % (unsigned long int) base;
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217 |
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218 | overflow = 0;
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219 | i = 0;
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220 | c = *s;
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221 | for (;c != '\0'; c = *++s)
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222 | {
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223 | if (s == end)
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224 | break;
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225 | if (c >= '0' && c <= '9')
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226 | c -= '0';
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227 | else if (isalphaW (c))
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228 | c = toupperW (c) - 'A' + 10;
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229 | else
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230 | break;
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231 | if ((int) c >= base)
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232 | break;
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233 | /* Check for overflow. */
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234 | if (i > cutoff || (i == cutoff && c > cutlim))
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235 | overflow = 1;
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236 | else
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237 | {
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238 | i *= (unsigned long int) base;
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239 | i += c;
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240 | }
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241 | }
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242 |
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243 | /* Check if anything actually happened. */
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244 | if (s == save)
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245 | goto noconv;
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246 |
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247 | /* Store in ENDPTR the address of one character
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248 | past the last character we converted. */
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249 | if (endptr != NULL)
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250 | *endptr = (WCHAR *)s;
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251 |
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252 | if (overflow)
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253 | {
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254 | return ULONG_MAX;
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255 | }
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256 |
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257 | /* Return the result of the appropriate sign. */
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258 | return negative ? -i : i;
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259 |
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260 | noconv:
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261 | /* We must handle a special case here: the base is 0 or 16 and the
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262 | first two characters are '0' and 'x', but the rest are no
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263 | hexadecimal digits. This is no error case. We return 0 and
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264 | ENDPTR points to the `x`. */
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265 | if (endptr != NULL)
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266 | {
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267 | if (save - nptr >= 2 && toupperW (save[-1]) == 'X'
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268 | && save[-2] == '0')
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269 | *endptr = (WCHAR *)&save[-1];
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270 | else
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271 | /* There was no number to convert. */
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272 | *endptr = (WCHAR *)nptr;
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273 | }
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274 |
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275 | return 0L;
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276 | }
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277 |
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278 | int vsnprintfW(WCHAR *str, unsigned int len, const WCHAR *format, va_list valist)
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279 | {
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280 | unsigned int written = 0;
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281 | const WCHAR *iter = format;
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282 | char bufa[256], fmtbufa[64], *fmta;
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283 |
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284 | while (*iter)
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285 | {
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286 | while (*iter && *iter != '%')
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287 | {
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288 | if (written++ >= len)
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289 | return -1;
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290 | *str++ = *iter++;
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291 | }
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292 | if (*iter == '%')
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293 | {
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294 | fmta = fmtbufa;
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295 | *fmta++ = *iter++;
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296 | while (*iter == '0' ||
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297 | *iter == '+' ||
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298 | *iter == '-' ||
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299 | *iter == ' ' ||
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300 | *iter == '0' ||
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301 | *iter == '*' ||
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302 | *iter == '#')
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303 | {
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304 | if (*iter == '*')
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305 | {
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306 | char *buffiter = bufa;
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307 | int fieldlen = va_arg(valist, int);
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308 | sprintf(buffiter, "%d", fieldlen);
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309 | while (*buffiter)
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310 | *fmta++ = *buffiter++;
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311 | }
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312 | else
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313 | *fmta++ = *iter;
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314 | iter++;
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315 | }
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316 |
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317 | while (isdigit(*iter))
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318 | *fmta++ = *iter++;
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319 |
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320 | if (*iter == '.')
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321 | {
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322 | *fmta++ = *iter++;
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323 | if (*iter == '*')
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324 | {
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325 | char *buffiter = bufa;
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326 | int fieldlen = va_arg(valist, int);
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327 | sprintf(buffiter, "%d", fieldlen);
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328 | while (*buffiter)
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329 | *fmta++ = *buffiter++;
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330 | }
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331 | else
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332 | while (isdigit(*iter))
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333 | *fmta++ = *iter++;
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334 | }
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335 | if (*iter == 'h' || *iter == 'l')
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336 | *fmta++ = *iter++;
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337 |
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338 | switch (*iter)
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339 | {
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340 | case 's':
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341 | {
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342 | static const WCHAR none[] = { '(','n','u','l','l',')',0 };
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343 | const WCHAR *wstr = va_arg(valist, const WCHAR *);
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344 | const WCHAR *striter = wstr ? wstr : none;
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345 | while (*striter)
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346 | {
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347 | if (written++ >= len)
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348 | return -1;
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349 | *str++ = *striter++;
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350 | }
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351 | iter++;
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352 | break;
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353 | }
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354 |
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355 | case 'c':
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356 | if (written++ >= len)
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357 | return -1;
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358 | *str++ = (WCHAR)va_arg(valist, int);
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359 | iter++;
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360 | break;
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361 |
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362 | default:
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363 | {
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364 | /* For non wc types, use system sprintf and append to wide char output */
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365 | /* FIXME: for unrecognised types, should ignore % when printing */
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366 | char *bufaiter = bufa;
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367 | if (*iter == 'p')
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368 | sprintf(bufaiter, "%08lX", va_arg(valist, long));
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369 | else
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370 | {
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371 | *fmta++ = *iter;
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372 | *fmta = '\0';
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373 | if (*iter == 'f')
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374 | sprintf(bufaiter, fmtbufa, va_arg(valist, double));
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375 | else
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376 | sprintf(bufaiter, fmtbufa, va_arg(valist, void *));
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377 | }
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378 | while (*bufaiter)
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379 | {
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380 | if (written++ >= len)
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381 | return -1;
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382 | *str++ = *bufaiter++;
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383 | }
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384 | iter++;
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385 | break;
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386 | }
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387 | }
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388 | }
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389 | }
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390 | if (written >= len)
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391 | return -1;
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392 | *str++ = 0;
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393 | return (int)written;
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394 | }
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395 |
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396 |
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397 | int snprintfW(WCHAR *str, unsigned int len, const WCHAR *format, ...)
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398 | {
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399 | int retval;
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400 | va_list valist;
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401 | va_start(valist, format);
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402 | retval = vsnprintfW(str, len, format, valist);
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403 | va_end(valist);
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404 | return retval;
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405 | }
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406 |
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407 | int sprintfW( WCHAR *str, const WCHAR *format, ...)
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408 | {
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409 | int retval;
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410 | va_list valist;
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411 | va_start(valist, format);
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412 | retval = vsnprintfW(str, INT_MAX, format, valist);
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413 | va_end(valist);
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414 | return retval;
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415 | }
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