1 | #include "mruby.h"
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2 | #include "mruby/array.h"
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3 | #include "mruby/class.h"
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4 | #include "mruby/hash.h"
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5 | #include "mruby/numeric.h"
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6 | #include "mruby/string.h"
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7 | #include "mruby/variable.h"
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8 | #include <errno.h>
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9 | #include <stdio.h>
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10 | #include <string.h>
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11 |
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12 | #if MRUBY_RELEASE_NO < 10000
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13 | static struct RClass *
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14 | mrb_module_get(mrb_state *mrb, const char *name)
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15 | {
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16 | return mrb_class_get(mrb, name);
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17 | }
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18 | #endif
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19 |
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20 | static mrb_value
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21 | mrb_sce_init(mrb_state *mrb, mrb_value self)
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22 | {
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23 | mrb_value c, e2c, m, str;
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24 | mrb_int n;
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25 | int argc, no_errno = 0;
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26 | char buf[20];
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27 |
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28 | argc = mrb_get_args(mrb, "o|i", &m, &n);
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29 | if (argc == 1) {
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30 | if (mrb_type(m) == MRB_TT_FIXNUM) {
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31 | n = mrb_fixnum(m);
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32 | m = mrb_nil_value();
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33 | } else {
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34 | no_errno = 1;
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35 | }
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36 | }
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37 | if (!no_errno) {
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38 | e2c = mrb_const_get(mrb, mrb_obj_value(mrb_module_get(mrb, "Errno")), mrb_intern_lit(mrb, "Errno2class"));
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39 | c = mrb_hash_fetch(mrb, e2c, mrb_fixnum_value(n), mrb_nil_value());
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40 | if (!mrb_nil_p(c)) {
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41 | mrb_basic_ptr(self)->c = mrb_class_ptr(c);
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42 | str = mrb_str_new_cstr(mrb, strerror(n));
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43 | } else {
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44 | mrb_iv_set(mrb, self, mrb_intern_lit(mrb, "errno"), mrb_fixnum_value(n));
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45 | str = mrb_str_new_cstr(mrb, "Unknown error: ");
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46 | snprintf(buf, sizeof(buf), "%d", (int)n);
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47 | mrb_str_cat2(mrb, str, buf);
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48 | }
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49 | } else {
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50 | str = mrb_str_new_cstr(mrb, "unknown error");
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51 | }
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52 | if (!mrb_nil_p(m)) {
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53 | mrb_str_cat2(mrb, str, " - ");
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54 | mrb_str_append(mrb, str, m);
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55 | }
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56 | mrb_iv_set(mrb, self, mrb_intern_lit(mrb, "mesg"), str);
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57 | return self;
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58 | }
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59 |
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60 | static mrb_value
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61 | mrb_sce_errno(mrb_state *mrb, mrb_value self)
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62 | {
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63 | struct RClass *c;
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64 | mrb_sym sym;
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65 |
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66 | c = mrb_class(mrb, self);
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67 | sym = mrb_intern_lit(mrb, "Errno");
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68 | #if MRUBY_RELEASE_NO < 10000
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69 | if (mrb_const_defined_at(mrb, c, sym)) {
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70 | #else
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71 | if (mrb_const_defined_at(mrb, mrb_obj_value(c), sym)) {
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72 | #endif
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73 | return mrb_const_get(mrb, mrb_obj_value(c), sym);
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74 | } else {
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75 | sym = mrb_intern_lit(mrb, "errno");
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76 | return mrb_attr_get(mrb, self, sym);
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77 | }
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78 | }
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79 |
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80 | static mrb_value
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81 | mrb_sce_to_s(mrb_state *mrb, mrb_value self)
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82 | {
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83 | return mrb_attr_get(mrb, self, mrb_intern_lit(mrb, "mesg"));
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84 | }
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85 |
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86 | static mrb_value
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87 | mrb_sce_sys_fail(mrb_state *mrb, mrb_value cls)
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88 | {
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89 | struct RClass *cl, *sce;
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90 | mrb_value e, msg;
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91 | mrb_int no;
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92 | int argc;
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93 | char name[8];
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94 |
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95 | sce = mrb_class_get(mrb, "SystemCallError");
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96 | argc = mrb_get_args(mrb, "i|S", &no, &msg);
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97 | if (argc == 1) {
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98 | e = mrb_funcall(mrb, mrb_obj_value(sce), "new", 1, mrb_fixnum_value(no));
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99 | } else {
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100 | e = mrb_funcall(mrb, mrb_obj_value(sce), "new", 2, msg, mrb_fixnum_value(no));
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101 | }
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102 | if (mrb_obj_class(mrb, e) == sce) {
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103 | snprintf(name, sizeof(name), "E%03ld", (long)no);
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104 | cl = mrb_define_class_under(mrb, mrb_module_get(mrb, "Errno"), name, sce);
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105 | mrb_define_const(mrb, cl, "Errno", mrb_fixnum_value(no));
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106 | mrb_basic_ptr(e)->c = cl;
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107 | }
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108 | mrb_exc_raise(mrb, e);
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109 | return mrb_nil_value(); /* NOTREACHED */
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110 | }
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111 |
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112 | static mrb_value
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113 | mrb_exxx_init(mrb_state *mrb, mrb_value self)
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114 | {
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115 | mrb_value m, no, str;
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116 |
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117 | no = mrb_const_get(mrb, mrb_obj_value(mrb_class(mrb, self)), mrb_intern_lit(mrb, "Errno"));
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118 | str = mrb_str_new_cstr(mrb, strerror(mrb_fixnum(no)));
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119 |
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120 | m = mrb_nil_value();
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121 | mrb_get_args(mrb, "|S", &m);
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122 | if (!mrb_nil_p(m)) {
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123 | mrb_str_cat2(mrb, str, " - ");
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124 | mrb_str_append(mrb, str, m);
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125 | }
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126 | mrb_iv_set(mrb, self, mrb_intern_lit(mrb, "mesg"), str);
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127 | return self;
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128 | }
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129 |
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130 | void
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131 | mrb_mruby_errno_gem_init(mrb_state *mrb)
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132 | {
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133 | struct RClass *e, *eno, *sce, *ste;
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134 | mrb_value h, noerror;
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135 |
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136 | ste = mrb_class_get(mrb, "StandardError");
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137 |
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138 | sce = mrb_define_class(mrb, "SystemCallError", ste);
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139 | mrb_define_class_method(mrb, sce, "_sys_fail", mrb_sce_sys_fail, MRB_ARGS_REQ(1));
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140 | mrb_define_method(mrb, sce, "errno", mrb_sce_errno, MRB_ARGS_NONE());
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141 | mrb_define_method(mrb, sce, "to_s", mrb_sce_to_s, MRB_ARGS_NONE());
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142 | mrb_define_method(mrb, sce, "initialize", mrb_sce_init, MRB_ARGS_ARG(1, 1));
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143 |
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144 | eno = mrb_define_module(mrb, "Errno");
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145 | h = mrb_hash_new(mrb);
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146 | mrb_define_const(mrb, eno, "Errno2class", h);
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147 |
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148 | e = mrb_define_class_under(mrb, eno, "NOERROR", sce);
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149 | mrb_define_const(mrb, e, "Errno", mrb_fixnum_value(0));
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150 | mrb_define_method(mrb, e, "initialize", mrb_exxx_init, MRB_ARGS_OPT(1));
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151 | //mrb_define_method(mrb, e, "===", mrb_exxx_cmp, MRB_ARGS_REQ(1));
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152 | noerror = mrb_obj_value(e);
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153 |
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154 | #define itsdefined(SYM) \
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155 | do { \
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156 | int ai = mrb_gc_arena_save(mrb); \
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157 | e = mrb_define_class_under(mrb, eno, #SYM, sce); \
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158 | mrb_define_const(mrb, e, "Errno", mrb_fixnum_value(SYM)); \
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159 | mrb_define_method(mrb, e, "initialize", mrb_exxx_init, MRB_ARGS_OPT(1)); \
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160 | mrb_hash_set(mrb, h, mrb_fixnum_value(SYM), mrb_obj_value(e)); \
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161 | mrb_gc_arena_restore(mrb, ai); \
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162 | } while (0)
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163 |
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164 | #define itsnotdefined(SYM) \
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165 | do { \
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166 | mrb_define_const(mrb, eno, #SYM, noerror); \
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167 | } while (0)
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168 |
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169 | #include "known_errors_def.cstub"
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170 | }
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171 |
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172 | void
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173 | mrb_mruby_errno_gem_final(mrb_state *mrb)
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174 | {
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175 | }
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