annotate foosdk/sdk/foobar2000/shared/utf8.cpp @ 1:20d02a178406 default tip

*: check in everything else yay
author Paper <paper@tflc.us>
date Mon, 05 Jan 2026 02:15:46 -0500
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1 #include "shared.h"
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2
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3 #include <locale.h>
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4
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5 using namespace pfc;
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6
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7 extern "C" {
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8
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9 #if 0
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10 inline static unsigned q_tolower(unsigned c)
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11 {
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12 if (c>='A' && c<='Z') c += 'a' - 'A';
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13 return c;
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14 }
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15 #else
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16 static const t_uint8 ascii_tolower_table[128] = {0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0A,0x0B,0x0C,0x0D,0x0E,0x0F,0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,0x18,0x19,0x1A,0x1B,0x1C,0x1D,0x1E,0x1F,0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,0x28,0x29,0x2A,0x2B,0x2C,0x2D,0x2E,0x2F,0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0x3A,0x3B,0x3C,0x3D,0x3E,0x3F,0x40,0x61,0x62,0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6A,0x6B,0x6C,0x6D,0x6E,0x6F,0x70,0x71,0x72,0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7A,0x5B,0x5C,0x5D,0x5E,0x5F,0x60,0x61,0x62,0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6A,0x6B,0x6C,0x6D,0x6E,0x6F,0x70,0x71,0x72,0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7A,0x7B,0x7C,0x7D,0x7E,0x7F};
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17 #define q_tolower(c) ascii_tolower_table[(unsigned)c]
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18 #endif
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19
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20
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21 unsigned SHARED_EXPORT uCharLower(unsigned param)
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22 {
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23 return pfc::charLower(param);
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24 }
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25
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26 unsigned SHARED_EXPORT uCharUpper(unsigned param)
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27 {
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28 return pfc::charUpper(param);
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29 }
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30
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31 static inline int compare_wchar(unsigned c1,unsigned c2) throw()
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32 {
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33 if (c1==c2) return 0;
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34 c1 = pfc::charLower(c1);
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35 c2 = pfc::charLower(c2);
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36 if (c1<c2) return -1;
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37 else if (c1>c2) return 1;
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38 else return 0;
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39 }
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40
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41
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42 int SHARED_EXPORT stricmp_utf8(const char * p1,const char * p2) throw()
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43 {
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44 for(;;)
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45 {
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46 if (*p1>=0 && *p2>=0)//signed char
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47 {
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48 unsigned c1 = q_tolower(*p1), c2 = q_tolower(*p2);
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49 if (c1<c2) return -1;
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50 else if (c1>c2) return 1;
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51 else if (c1 == 0) return 0;
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52 else
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53 {
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54 p1++;
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55 p2++;
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56 }
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57 }
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58 else
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59 {
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60 unsigned w1,w2; t_size d1,d2;
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61 d1 = utf8_decode_char(p1,w1);
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62 d2 = utf8_decode_char(p2,w2);
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63 if (d1 == 0 && d2 == 0) return 0;
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64 else if (d1==0) return -1;
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65 else if (d2==0) return 1;
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66 int rv = compare_wchar(w1,w2);
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67 if (rv) return rv;
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68 p1 += d1;
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69 p2 += d2;
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70 }
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71 }
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72 }
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73
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74 int SHARED_EXPORT stricmp_utf8_stringtoblock(const char * p1,const char * p2,t_size p2_bytes) throw()
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75 {
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76 return stricmp_utf8_ex(p1,-1,p2,p2_bytes);
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77 }
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78
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79 int SHARED_EXPORT stricmp_utf8_partial(const char * p1,const char * p2,t_size num) throw()
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80 {
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81 for(;num;)
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82 {
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83 unsigned w1,w2; t_size d1,d2;
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84 d1 = utf8_decode_char(p1,w1);
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85 d2 = utf8_decode_char(p2,w2);
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86 if (w2==0 || d2==0) return 0;
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87 int rv = compare_wchar(w1,w2);
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88 if (rv) return rv;
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89 p1 += d1;
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90 p2 += d2;
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91 num--;
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92 }
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93 return 0;
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94 }
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95
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96 int SHARED_EXPORT stricmp_utf8_max(const char * p1,const char * p2,t_size p1_bytes) throw()
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97 {
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98 return stricmp_utf8_ex(p1,p1_bytes,p2,-1);
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99 }
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100
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101 namespace {
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102 typedef bool (*t_replace_test)(const char * src,const char * test,t_size len);
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103
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104 static bool replace_test_i(const char * src,const char * test,t_size len)
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105 {
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106 return stricmp_utf8_max(src,test,len)==0;
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107 }
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108
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109 static bool replace_test(const char * src,const char * test,t_size len)
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110 {
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111 t_size ptr;
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112 bool rv = true;
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113 for(ptr=0;ptr<len;ptr++)
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114 {
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115 if (src[ptr]!=test[ptr]) {rv = false; break;}
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116 }
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117 return rv;
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118 }
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119 }
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120
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121 t_size SHARED_EXPORT uReplaceStringAdd(string_base & out,const char * src,t_size src_len,const char * s1,t_size len1,const char * s2,t_size len2,bool casesens)
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122 {
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123 t_replace_test testfunc = casesens ? replace_test : replace_test_i;
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124
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125 len1 = strlen_max(s1,len1); len2 = strlen_max(s2,len2);
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126
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127 t_size len = strlen_max(src,src_len);
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128
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129 t_size count = 0;
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130
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131 if (len1>0)
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132 {
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133 t_size ptr = 0;
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134 while(ptr+len1<=len)
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135 {
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136 if (testfunc(src+ptr,s1,len1))
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137 {
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138 count++;
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139 out.add_string(s2,len2);
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140 ptr += len1;
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141 }
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142 else out.add_byte(src[ptr++]);
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143 }
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144 if (ptr<len) out.add_string(src+ptr,len-ptr);
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145 }
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146 return count;
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147 }
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148
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149 t_size SHARED_EXPORT uReplaceCharAdd(string_base & out,const char * src,t_size src_len,unsigned c1,unsigned c2,bool casesens)
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150 {
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151 assert(c1>0);
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152 assert(c2>0);
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153 char s1[8],s2[8];
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154 t_size len1,len2;
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155 len1 = utf8_encode_char(c1,s1);
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156 len2 = utf8_encode_char(c2,s2);
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157 return uReplaceString(out,src,src_len,s1,len1,s2,len2,casesens);
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158 }
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159
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160
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161 void SHARED_EXPORT uAddStringLower(string_base & out,const char * src,t_size len)
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162 {
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163 while(len && *src)
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164 {
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165 unsigned c; t_size d;
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166 d = utf8_decode_char(src,c,len);
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167 if (d==0 || d>len) break;
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168 out.add_char(uCharLower(c));
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169 src+=d;
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170 len-=d;
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171 }
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172 }
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173
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174 void SHARED_EXPORT uAddStringUpper(string_base & out,const char * src,t_size len)
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175 {
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176 while(len && *src)
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177 {
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178 unsigned c; t_size d;
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179 d = utf8_decode_char(src,c,len);
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180 if (d==0 || d>len) break;
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181 out.add_char(uCharUpper(c));
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182 src+=d;
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183 len-=d;
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184 }
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185 }
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186
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187 int SHARED_EXPORT stricmp_utf8_ex(const char * p1,t_size p1_bytes,const char * p2,t_size p2_bytes) throw()
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188 {
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189 p1_bytes = strlen_max(p1,p1_bytes);
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190 p2_bytes = strlen_max(p2,p2_bytes);
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191 for(;;)
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192 {
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193 if (p1_bytes == 0 && p2_bytes == 0) return 0;
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194 else if (p1_bytes == 0) return -1;
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195 else if (p2_bytes == 0) return 1;
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196 else if (*p1>0 && *p2>0)//signed char
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197 {
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198 unsigned c1 = q_tolower(*p1), c2 = q_tolower(*p2);
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199 if (c1<c2) return -1;
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200 else if (c1>c2) return 1;
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201 else
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202 {
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203 p1++;
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204 p2++;
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205 p1_bytes--;
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206 p2_bytes--;
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207 }
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208 }
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209 else
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210 {
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211 unsigned w1,w2;
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212 auto d1 = utf8_decode_char(p1,w1,p1_bytes);
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213 auto d2 = utf8_decode_char(p2,w2,p2_bytes);
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214 if (d1==0) return -1;
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215 if (d2==0) return 1;
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216 int rv = compare_wchar(w1,w2);
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217 if (rv) return rv;
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218 p1 += d1;
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219 p2 += d2;
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220 p1_bytes -= d1;
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221 p2_bytes -= d2;
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222 }
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223 }
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224 }
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225
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226 }