1 | /* |
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2 | * tclGet.c -- |
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3 | * |
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4 | * This file contains functions to convert strings into other forms, like |
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5 | * integers or floating-point numbers or booleans, doing syntax checking |
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6 | * along the way. |
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7 | * |
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8 | * Copyright (c) 1990-1993 The Regents of the University of California. |
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9 | * Copyright (c) 1994-1997 Sun Microsystems, Inc. |
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10 | * |
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11 | * See the file "license.terms" for information on usage and redistribution of |
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12 | * this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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13 | * |
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14 | * RCS: @(#) $Id: tclGet.c,v 1.20 2007/12/13 15:23:17 dgp Exp $ |
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15 | */ |
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16 | |
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17 | #include "tclInt.h" |
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18 | |
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19 | /* |
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20 | *---------------------------------------------------------------------- |
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21 | * |
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22 | * Tcl_GetInt -- |
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23 | * |
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24 | * Given a string, produce the corresponding integer value. |
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25 | * |
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26 | * Results: |
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27 | * The return value is normally TCL_OK; in this case *intPtr will be set |
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28 | * to the integer value equivalent to src. If src is improperly formed |
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29 | * then TCL_ERROR is returned and an error message will be left in the |
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30 | * interp's result. |
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31 | * |
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32 | * Side effects: |
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33 | * None. |
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34 | * |
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35 | *---------------------------------------------------------------------- |
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36 | */ |
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37 | |
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38 | int |
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39 | Tcl_GetInt( |
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40 | Tcl_Interp *interp, /* Interpreter to use for error reporting. */ |
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41 | CONST char *src, /* String containing a (possibly signed) |
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42 | * integer in a form acceptable to strtoul. */ |
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43 | int *intPtr) /* Place to store converted result. */ |
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44 | { |
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45 | Tcl_Obj obj; |
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46 | int code; |
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47 | |
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48 | obj.refCount = 1; |
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49 | obj.bytes = (char *) src; |
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50 | obj.length = strlen(src); |
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51 | obj.typePtr = NULL; |
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52 | |
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53 | code = Tcl_GetIntFromObj(interp, &obj, intPtr); |
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54 | if (obj.refCount > 1) { |
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55 | Tcl_Panic("invalid sharing of Tcl_Obj on C stack"); |
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56 | } |
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57 | return code; |
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58 | } |
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59 | |
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60 | /* |
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61 | *---------------------------------------------------------------------- |
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62 | * |
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63 | * TclGetLong -- |
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64 | * |
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65 | * Given a string, produce the corresponding long integer value. This |
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66 | * routine is a version of Tcl_GetInt but returns a "long" instead of an |
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67 | * "int" (a difference that matters on 64-bit architectures). |
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68 | * |
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69 | * Results: |
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70 | * The return value is normally TCL_OK; in this case *longPtr will be set |
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71 | * to the long integer value equivalent to src. If src is improperly |
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72 | * formed then TCL_ERROR is returned and an error message will be left in |
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73 | * the interp's result if interp is non-NULL. |
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74 | * |
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75 | * Side effects: |
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76 | * None. |
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77 | * |
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78 | *---------------------------------------------------------------------- |
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79 | */ |
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80 | |
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81 | int |
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82 | TclGetLong( |
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83 | Tcl_Interp *interp, /* Interpreter used for error reporting if not |
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84 | * NULL. */ |
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85 | CONST char *src, /* String containing a (possibly signed) long |
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86 | * integer in a form acceptable to strtoul. */ |
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87 | long *longPtr) /* Place to store converted long result. */ |
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88 | { |
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89 | Tcl_Obj obj; |
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90 | int code; |
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91 | |
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92 | obj.refCount = 1; |
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93 | obj.bytes = (char *) src; |
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94 | obj.length = strlen(src); |
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95 | obj.typePtr = NULL; |
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96 | |
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97 | code = Tcl_GetLongFromObj(interp, &obj, longPtr); |
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98 | if (obj.refCount > 1) { |
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99 | Tcl_Panic("invalid sharing of Tcl_Obj on C stack"); |
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100 | } |
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101 | return code; |
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102 | } |
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103 | |
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104 | /* |
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105 | *---------------------------------------------------------------------- |
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106 | * |
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107 | * Tcl_GetDouble -- |
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108 | * |
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109 | * Given a string, produce the corresponding double-precision |
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110 | * floating-point value. |
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111 | * |
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112 | * Results: |
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113 | * The return value is normally TCL_OK; in this case *doublePtr will be |
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114 | * set to the double-precision value equivalent to src. If src is |
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115 | * improperly formed then TCL_ERROR is returned and an error message will |
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116 | * be left in the interp's result. |
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117 | * |
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118 | * Side effects: |
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119 | * None. |
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120 | * |
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121 | *---------------------------------------------------------------------- |
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122 | */ |
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123 | |
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124 | int |
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125 | Tcl_GetDouble( |
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126 | Tcl_Interp *interp, /* Interpreter used for error reporting. */ |
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127 | CONST char *src, /* String containing a floating-point number |
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128 | * in a form acceptable to strtod. */ |
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129 | double *doublePtr) /* Place to store converted result. */ |
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130 | { |
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131 | Tcl_Obj obj; |
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132 | int code; |
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133 | |
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134 | obj.refCount = 1; |
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135 | obj.bytes = (char *) src; |
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136 | obj.length = strlen(src); |
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137 | obj.typePtr = NULL; |
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138 | |
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139 | code = Tcl_GetDoubleFromObj(interp, &obj, doublePtr); |
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140 | if (obj.refCount > 1) { |
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141 | Tcl_Panic("invalid sharing of Tcl_Obj on C stack"); |
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142 | } |
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143 | return code; |
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144 | } |
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145 | |
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146 | /* |
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147 | *---------------------------------------------------------------------- |
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148 | * |
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149 | * Tcl_GetBoolean -- |
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150 | * |
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151 | * Given a string, return a 0/1 boolean value corresponding to the |
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152 | * string. |
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153 | * |
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154 | * Results: |
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155 | * The return value is normally TCL_OK; in this case *boolPtr will be set |
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156 | * to the 0/1 value equivalent to src. If src is improperly formed then |
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157 | * TCL_ERROR is returned and an error message will be left in the |
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158 | * interp's result. |
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159 | * |
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160 | * Side effects: |
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161 | * None. |
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162 | * |
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163 | *---------------------------------------------------------------------- |
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164 | */ |
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165 | |
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166 | int |
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167 | Tcl_GetBoolean( |
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168 | Tcl_Interp *interp, /* Interpreter used for error reporting. */ |
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169 | CONST char *src, /* String containing a boolean number |
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170 | * specified either as 1/0 or true/false or |
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171 | * yes/no. */ |
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172 | int *boolPtr) /* Place to store converted result, which will |
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173 | * be 0 or 1. */ |
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174 | { |
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175 | Tcl_Obj obj; |
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176 | int code; |
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177 | |
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178 | obj.refCount = 1; |
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179 | obj.bytes = (char *) src; |
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180 | obj.length = strlen(src); |
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181 | obj.typePtr = NULL; |
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182 | |
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183 | code = Tcl_ConvertToType(interp, &obj, &tclBooleanType); |
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184 | if (obj.refCount > 1) { |
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185 | Tcl_Panic("invalid sharing of Tcl_Obj on C stack"); |
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186 | } |
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187 | if (code == TCL_OK) { |
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188 | *boolPtr = obj.internalRep.longValue; |
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189 | } |
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190 | return code; |
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191 | } |
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192 | |
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193 | /* |
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194 | * Local Variables: |
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195 | * mode: c |
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196 | * c-basic-offset: 4 |
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197 | * fill-column: 78 |
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198 | * End: |
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199 | */ |
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