1 | /* |
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2 | * tclCmdIL.c -- |
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3 | * |
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4 | * This file contains the top-level command routines for most of |
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5 | * the Tcl built-in commands whose names begin with the letters |
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6 | * I through L. It contains only commands in the generic core |
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7 | * (i.e. those that don't depend much upon UNIX facilities). |
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8 | * |
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9 | * Copyright (c) 1987-1993 The Regents of the University of California. |
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10 | * Copyright (c) 1993-1997 Lucent Technologies. |
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11 | * Copyright (c) 1994-1997 Sun Microsystems, Inc. |
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12 | * Copyright (c) 1998-1999 by Scriptics Corporation. |
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13 | * |
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14 | * See the file "license.terms" for information on usage and redistribution |
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15 | * of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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16 | * |
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17 | * RCS: @(#) $Id: tclCmdIL.c,v 1.1 2008-06-04 13:58:04 demin Exp $ |
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18 | */ |
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19 | |
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20 | #include "tclInt.h" |
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21 | #include "tclPort.h" |
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22 | #include "tclCompile.h" |
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23 | |
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24 | /* |
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25 | * During execution of the "lsort" command, structures of the following |
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26 | * type are used to arrange the objects being sorted into a collection |
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27 | * of linked lists. |
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28 | */ |
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29 | |
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30 | typedef struct SortElement { |
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31 | Tcl_Obj *objPtr; /* Object being sorted. */ |
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32 | struct SortElement *nextPtr; /* Next element in the list, or |
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33 | * NULL for end of list. */ |
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34 | } SortElement; |
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35 | |
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36 | /* |
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37 | * The "lsort" command needs to pass certain information down to the |
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38 | * function that compares two list elements, and the comparison function |
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39 | * needs to pass success or failure information back up to the top-level |
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40 | * "lsort" command. The following structure is used to pass this |
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41 | * information. |
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42 | */ |
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43 | |
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44 | typedef struct SortInfo { |
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45 | int isIncreasing; /* Nonzero means sort in increasing order. */ |
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46 | int sortMode; /* The sort mode. One of SORTMODE_* |
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47 | * values defined below */ |
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48 | Tcl_DString compareCmd; /* The Tcl comparison command when sortMode |
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49 | * is SORTMODE_COMMAND. Pre-initialized to |
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50 | * hold base of command.*/ |
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51 | int index; /* If the -index option was specified, this |
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52 | * holds the index of the list element |
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53 | * to extract for comparison. If -index |
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54 | * wasn't specified, this is -1. */ |
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55 | Tcl_Interp *interp; /* The interpreter in which the sortis |
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56 | * being done. */ |
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57 | int resultCode; /* Completion code for the lsort command. |
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58 | * If an error occurs during the sort this |
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59 | * is changed from TCL_OK to TCL_ERROR. */ |
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60 | } SortInfo; |
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61 | |
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62 | /* |
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63 | * The "sortMode" field of the SortInfo structure can take on any of the |
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64 | * following values. |
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65 | */ |
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66 | |
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67 | #define SORTMODE_ASCII 0 |
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68 | #define SORTMODE_INTEGER 1 |
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69 | #define SORTMODE_REAL 2 |
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70 | #define SORTMODE_COMMAND 3 |
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71 | #define SORTMODE_DICTIONARY 4 |
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72 | |
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73 | /* |
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74 | * Forward declarations for procedures defined in this file: |
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75 | */ |
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76 | |
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77 | static void AppendLocals _ANSI_ARGS_((Tcl_Interp *interp, |
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78 | Tcl_Obj *listPtr, char *pattern, |
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79 | int includeLinks)); |
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80 | static int DictionaryCompare _ANSI_ARGS_((char *left, |
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81 | char *right)); |
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82 | static int InfoArgsCmd _ANSI_ARGS_((ClientData dummy, |
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83 | Tcl_Interp *interp, int objc, |
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84 | Tcl_Obj *CONST objv[])); |
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85 | static int InfoBodyCmd _ANSI_ARGS_((ClientData dummy, |
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86 | Tcl_Interp *interp, int objc, |
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87 | Tcl_Obj *CONST objv[])); |
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88 | static int InfoCmdCountCmd _ANSI_ARGS_((ClientData dummy, |
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89 | Tcl_Interp *interp, int objc, |
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90 | Tcl_Obj *CONST objv[])); |
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91 | static int InfoCommandsCmd _ANSI_ARGS_((ClientData dummy, |
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92 | Tcl_Interp *interp, int objc, |
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93 | Tcl_Obj *CONST objv[])); |
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94 | static int InfoCompleteCmd _ANSI_ARGS_((ClientData dummy, |
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95 | Tcl_Interp *interp, int objc, |
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96 | Tcl_Obj *CONST objv[])); |
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97 | static int InfoDefaultCmd _ANSI_ARGS_((ClientData dummy, |
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98 | Tcl_Interp *interp, int objc, |
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99 | Tcl_Obj *CONST objv[])); |
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100 | static int InfoExistsCmd _ANSI_ARGS_((ClientData dummy, |
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101 | Tcl_Interp *interp, int objc, |
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102 | Tcl_Obj *CONST objv[])); |
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103 | static int InfoGlobalsCmd _ANSI_ARGS_((ClientData dummy, |
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104 | Tcl_Interp *interp, int objc, |
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105 | Tcl_Obj *CONST objv[])); |
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106 | static int InfoLevelCmd _ANSI_ARGS_((ClientData dummy, |
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107 | Tcl_Interp *interp, int objc, |
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108 | Tcl_Obj *CONST objv[])); |
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109 | static int InfoLibraryCmd _ANSI_ARGS_((ClientData dummy, |
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110 | Tcl_Interp *interp, int objc, |
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111 | Tcl_Obj *CONST objv[])); |
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112 | static int InfoLocalsCmd _ANSI_ARGS_((ClientData dummy, |
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113 | Tcl_Interp *interp, int objc, |
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114 | Tcl_Obj *CONST objv[])); |
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115 | static int InfoNameOfExecutableCmd _ANSI_ARGS_(( |
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116 | ClientData dummy, Tcl_Interp *interp, int objc, |
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117 | Tcl_Obj *CONST objv[])); |
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118 | static int InfoPatchLevelCmd _ANSI_ARGS_((ClientData dummy, |
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119 | Tcl_Interp *interp, int objc, |
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120 | Tcl_Obj *CONST objv[])); |
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121 | static int InfoProcsCmd _ANSI_ARGS_((ClientData dummy, |
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122 | Tcl_Interp *interp, int objc, |
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123 | Tcl_Obj *CONST objv[])); |
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124 | static int InfoScriptCmd _ANSI_ARGS_((ClientData dummy, |
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125 | Tcl_Interp *interp, int objc, |
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126 | Tcl_Obj *CONST objv[])); |
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127 | static int InfoSharedlibCmd _ANSI_ARGS_((ClientData dummy, |
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128 | Tcl_Interp *interp, int objc, |
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129 | Tcl_Obj *CONST objv[])); |
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130 | static int InfoTclVersionCmd _ANSI_ARGS_((ClientData dummy, |
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131 | Tcl_Interp *interp, int objc, |
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132 | Tcl_Obj *CONST objv[])); |
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133 | static int InfoVarsCmd _ANSI_ARGS_((ClientData dummy, |
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134 | Tcl_Interp *interp, int objc, |
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135 | Tcl_Obj *CONST objv[])); |
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136 | static SortElement * MergeSort _ANSI_ARGS_((SortElement *headPt, |
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137 | SortInfo *infoPtr)); |
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138 | static SortElement * MergeLists _ANSI_ARGS_((SortElement *leftPtr, |
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139 | SortElement *rightPtr, SortInfo *infoPtr)); |
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140 | static int SortCompare _ANSI_ARGS_((Tcl_Obj *firstPtr, |
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141 | Tcl_Obj *second, SortInfo *infoPtr)); |
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142 | |
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143 | /* |
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144 | *---------------------------------------------------------------------- |
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145 | * |
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146 | * Tcl_IfCmd -- |
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147 | * |
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148 | * This procedure is invoked to process the "if" Tcl command. |
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149 | * See the user documentation for details on what it does. |
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150 | * |
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151 | * With the bytecode compiler, this procedure is only called when |
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152 | * a command name is computed at runtime, and is "if" or the name |
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153 | * to which "if" was renamed: e.g., "set z if; $z 1 {puts foo}" |
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154 | * |
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155 | * Results: |
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156 | * A standard Tcl result. |
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157 | * |
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158 | * Side effects: |
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159 | * See the user documentation. |
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160 | * |
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161 | *---------------------------------------------------------------------- |
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162 | */ |
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163 | |
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164 | /* ARGSUSED */ |
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165 | int |
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166 | Tcl_IfCmd(dummy, interp, argc, argv) |
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167 | ClientData dummy; /* Not used. */ |
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168 | Tcl_Interp *interp; /* Current interpreter. */ |
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169 | int argc; /* Number of arguments. */ |
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170 | char **argv; /* Argument strings. */ |
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171 | { |
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172 | int i, result, value; |
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173 | |
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174 | i = 1; |
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175 | while (1) { |
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176 | /* |
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177 | * At this point in the loop, argv and argc refer to an expression |
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178 | * to test, either for the main expression or an expression |
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179 | * following an "elseif". The arguments after the expression must |
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180 | * be "then" (optional) and a script to execute if the expression is |
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181 | * true. |
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182 | */ |
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183 | |
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184 | if (i >= argc) { |
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185 | Tcl_AppendResult(interp, "wrong # args: no expression after \"", |
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186 | argv[i-1], "\" argument", (char *) NULL); |
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187 | return TCL_ERROR; |
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188 | } |
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189 | result = Tcl_ExprBoolean(interp, argv[i], &value); |
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190 | if (result != TCL_OK) { |
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191 | return result; |
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192 | } |
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193 | i++; |
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194 | if ((i < argc) && (strcmp(argv[i], "then") == 0)) { |
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195 | i++; |
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196 | } |
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197 | if (i >= argc) { |
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198 | Tcl_AppendResult(interp, "wrong # args: no script following \"", |
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199 | argv[i-1], "\" argument", (char *) NULL); |
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200 | return TCL_ERROR; |
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201 | } |
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202 | if (value) { |
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203 | return Tcl_Eval(interp, argv[i]); |
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204 | } |
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205 | |
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206 | /* |
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207 | * The expression evaluated to false. Skip the command, then |
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208 | * see if there is an "else" or "elseif" clause. |
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209 | */ |
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210 | |
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211 | i++; |
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212 | if (i >= argc) { |
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213 | return TCL_OK; |
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214 | } |
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215 | if ((argv[i][0] == 'e') && (strcmp(argv[i], "elseif") == 0)) { |
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216 | i++; |
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217 | continue; |
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218 | } |
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219 | break; |
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220 | } |
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221 | |
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222 | /* |
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223 | * Couldn't find a "then" or "elseif" clause to execute. Check now |
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224 | * for an "else" clause. We know that there's at least one more |
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225 | * argument when we get here. |
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226 | */ |
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227 | |
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228 | if (strcmp(argv[i], "else") == 0) { |
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229 | i++; |
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230 | if (i >= argc) { |
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231 | Tcl_AppendResult(interp, |
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232 | "wrong # args: no script following \"else\" argument", |
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233 | (char *) NULL); |
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234 | return TCL_ERROR; |
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235 | } |
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236 | } |
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237 | return Tcl_Eval(interp, argv[i]); |
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238 | } |
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239 | |
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240 | /* |
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241 | *---------------------------------------------------------------------- |
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242 | * |
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243 | * Tcl_IncrCmd -- |
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244 | * |
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245 | * This procedure is invoked to process the "incr" Tcl command. |
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246 | * See the user documentation for details on what it does. |
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247 | * |
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248 | * With the bytecode compiler, this procedure is only called when |
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249 | * a command name is computed at runtime, and is "incr" or the name |
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250 | * to which "incr" was renamed: e.g., "set z incr; $z i -1" |
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251 | * |
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252 | * Results: |
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253 | * A standard Tcl result. |
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254 | * |
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255 | * Side effects: |
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256 | * See the user documentation. |
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257 | * |
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258 | *---------------------------------------------------------------------- |
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259 | */ |
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260 | |
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261 | /* ARGSUSED */ |
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262 | int |
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263 | Tcl_IncrCmd(dummy, interp, argc, argv) |
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264 | ClientData dummy; /* Not used. */ |
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265 | Tcl_Interp *interp; /* Current interpreter. */ |
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266 | int argc; /* Number of arguments. */ |
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267 | char **argv; /* Argument strings. */ |
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268 | { |
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269 | int value; |
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270 | char *oldString, *result; |
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271 | char newString[30]; |
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272 | |
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273 | if ((argc != 2) && (argc != 3)) { |
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274 | Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], |
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275 | " varName ?increment?\"", (char *) NULL); |
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276 | return TCL_ERROR; |
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277 | } |
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278 | |
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279 | oldString = Tcl_GetVar(interp, argv[1], TCL_LEAVE_ERR_MSG); |
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280 | if (oldString == NULL) { |
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281 | return TCL_ERROR; |
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282 | } |
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283 | if (Tcl_GetInt(interp, oldString, &value) != TCL_OK) { |
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284 | Tcl_AddErrorInfo(interp, |
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285 | "\n (reading value of variable to increment)"); |
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286 | return TCL_ERROR; |
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287 | } |
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288 | if (argc == 2) { |
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289 | value += 1; |
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290 | } else { |
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291 | int increment; |
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292 | |
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293 | if (Tcl_GetInt(interp, argv[2], &increment) != TCL_OK) { |
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294 | Tcl_AddErrorInfo(interp, |
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295 | "\n (reading increment)"); |
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296 | return TCL_ERROR; |
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297 | } |
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298 | value += increment; |
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299 | } |
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300 | TclFormatInt(newString, value); |
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301 | result = Tcl_SetVar(interp, argv[1], newString, TCL_LEAVE_ERR_MSG); |
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302 | if (result == NULL) { |
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303 | return TCL_ERROR; |
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304 | } |
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305 | |
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306 | /* |
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307 | * Copy the result since the variable's value might change. |
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308 | */ |
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309 | |
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310 | Tcl_SetResult(interp, result, TCL_VOLATILE); |
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311 | return TCL_OK; |
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312 | } |
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313 | |
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314 | /* |
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315 | *---------------------------------------------------------------------- |
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316 | * |
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317 | * Tcl_InfoObjCmd -- |
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318 | * |
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319 | * This procedure is invoked to process the "info" Tcl command. |
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320 | * See the user documentation for details on what it does. |
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321 | * |
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322 | * Results: |
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323 | * A standard Tcl result. |
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324 | * |
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325 | * Side effects: |
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326 | * See the user documentation. |
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327 | * |
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328 | *---------------------------------------------------------------------- |
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329 | */ |
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330 | |
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331 | /* ARGSUSED */ |
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332 | int |
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333 | Tcl_InfoObjCmd(clientData, interp, objc, objv) |
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334 | ClientData clientData; /* Arbitrary value passed to the command. */ |
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335 | Tcl_Interp *interp; /* Current interpreter. */ |
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336 | int objc; /* Number of arguments. */ |
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337 | Tcl_Obj *CONST objv[]; /* Argument objects. */ |
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338 | { |
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339 | static char *subCmds[] = { |
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340 | "args", "body", "cmdcount", "commands", |
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341 | "complete", "default", "exists", "globals", |
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342 | "level", "library", |
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343 | "locals", "nameofexecutable", "patchlevel", "procs", |
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344 | "script", "sharedlibextension", "tclversion", "vars", |
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345 | (char *) NULL}; |
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346 | enum ISubCmdIdx { |
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347 | IArgsIdx, IBodyIdx, ICmdCountIdx, ICommandsIdx, |
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348 | ICompleteIdx, IDefaultIdx, IExistsIdx, IGlobalsIdx, |
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349 | ILevelIdx, ILibraryIdx, |
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350 | ILocalsIdx, INameOfExecutableIdx, IPatchLevelIdx, IProcsIdx, |
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351 | IScriptIdx, ISharedLibExtensionIdx, ITclVersionIdx, IVarsIdx |
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352 | } index; |
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353 | int result; |
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354 | |
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355 | if (objc < 2) { |
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356 | Tcl_WrongNumArgs(interp, 1, objv, "option ?arg arg ...?"); |
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357 | return TCL_ERROR; |
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358 | } |
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359 | |
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360 | result = Tcl_GetIndexFromObj(interp, objv[1], subCmds, "option", 0, |
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361 | (int *) &index); |
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362 | if (result != TCL_OK) { |
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363 | return result; |
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364 | } |
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365 | |
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366 | switch (index) { |
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367 | case IArgsIdx: |
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368 | result = InfoArgsCmd(clientData, interp, objc, objv); |
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369 | break; |
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370 | case IBodyIdx: |
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371 | result = InfoBodyCmd(clientData, interp, objc, objv); |
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372 | break; |
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373 | case ICmdCountIdx: |
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374 | result = InfoCmdCountCmd(clientData, interp, objc, objv); |
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375 | break; |
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376 | case ICommandsIdx: |
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377 | result = InfoCommandsCmd(clientData, interp, objc, objv); |
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378 | break; |
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379 | case ICompleteIdx: |
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380 | result = InfoCompleteCmd(clientData, interp, objc, objv); |
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381 | break; |
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382 | case IDefaultIdx: |
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383 | result = InfoDefaultCmd(clientData, interp, objc, objv); |
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384 | break; |
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385 | case IExistsIdx: |
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386 | result = InfoExistsCmd(clientData, interp, objc, objv); |
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387 | break; |
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388 | case IGlobalsIdx: |
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389 | result = InfoGlobalsCmd(clientData, interp, objc, objv); |
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390 | break; |
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391 | case ILevelIdx: |
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392 | result = InfoLevelCmd(clientData, interp, objc, objv); |
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393 | break; |
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394 | case ILibraryIdx: |
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395 | result = InfoLibraryCmd(clientData, interp, objc, objv); |
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396 | break; |
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397 | case ILocalsIdx: |
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398 | result = InfoLocalsCmd(clientData, interp, objc, objv); |
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399 | break; |
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400 | case INameOfExecutableIdx: |
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401 | result = InfoNameOfExecutableCmd(clientData, interp, objc, objv); |
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402 | break; |
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403 | case IPatchLevelIdx: |
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404 | result = InfoPatchLevelCmd(clientData, interp, objc, objv); |
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405 | break; |
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406 | case IProcsIdx: |
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407 | result = InfoProcsCmd(clientData, interp, objc, objv); |
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408 | break; |
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409 | case IScriptIdx: |
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410 | result = InfoScriptCmd(clientData, interp, objc, objv); |
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411 | break; |
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412 | case ISharedLibExtensionIdx: |
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413 | result = InfoSharedlibCmd(clientData, interp, objc, objv); |
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414 | break; |
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415 | case ITclVersionIdx: |
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416 | result = InfoTclVersionCmd(clientData, interp, objc, objv); |
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417 | break; |
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418 | case IVarsIdx: |
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419 | result = InfoVarsCmd(clientData, interp, objc, objv); |
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420 | break; |
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421 | } |
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422 | return result; |
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423 | } |
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424 | |
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425 | /* |
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426 | *---------------------------------------------------------------------- |
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427 | * |
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428 | * InfoArgsCmd -- |
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429 | * |
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430 | * Called to implement the "info args" command that returns the |
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431 | * argument list for a procedure. Handles the following syntax: |
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432 | * |
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433 | * info args procName |
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434 | * |
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435 | * Results: |
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436 | * Returns TCL_OK is successful and TCL_ERROR is there is an error. |
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437 | * |
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438 | * Side effects: |
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439 | * Returns a result in the interpreter's result object. If there is |
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440 | * an error, the result is an error message. |
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441 | * |
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442 | *---------------------------------------------------------------------- |
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443 | */ |
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444 | |
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445 | static int |
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446 | InfoArgsCmd(dummy, interp, objc, objv) |
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447 | ClientData dummy; /* Not used. */ |
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448 | Tcl_Interp *interp; /* Current interpreter. */ |
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449 | int objc; /* Number of arguments. */ |
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450 | Tcl_Obj *CONST objv[]; /* Argument objects. */ |
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451 | { |
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452 | register Interp *iPtr = (Interp *) interp; |
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453 | char *name; |
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454 | Proc *procPtr; |
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455 | CompiledLocal *localPtr; |
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456 | Tcl_Obj *listObjPtr; |
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457 | |
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458 | if (objc != 3) { |
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459 | Tcl_WrongNumArgs(interp, 2, objv, "procname"); |
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460 | return TCL_ERROR; |
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461 | } |
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462 | |
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463 | name = Tcl_GetStringFromObj(objv[2], (int *) NULL); |
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464 | procPtr = TclFindProc(iPtr, name); |
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465 | if (procPtr == NULL) { |
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466 | Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
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467 | "\"", name, "\" isn't a procedure", (char *) NULL); |
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468 | return TCL_ERROR; |
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469 | } |
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470 | |
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471 | /* |
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472 | * Build a return list containing the arguments. |
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473 | */ |
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474 | |
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475 | listObjPtr = Tcl_NewListObj(0, (Tcl_Obj **) NULL); |
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476 | for (localPtr = procPtr->firstLocalPtr; localPtr != NULL; |
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477 | localPtr = localPtr->nextPtr) { |
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478 | if (TclIsVarArgument(localPtr)) { |
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479 | Tcl_ListObjAppendElement(interp, listObjPtr, |
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480 | Tcl_NewStringObj(localPtr->name, -1)); |
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481 | } |
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482 | } |
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483 | Tcl_SetObjResult(interp, listObjPtr); |
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484 | return TCL_OK; |
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485 | } |
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486 | |
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487 | /* |
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488 | *---------------------------------------------------------------------- |
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489 | * |
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490 | * InfoBodyCmd -- |
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491 | * |
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492 | * Called to implement the "info body" command that returns the body |
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493 | * for a procedure. Handles the following syntax: |
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494 | * |
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495 | * info body procName |
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496 | * |
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497 | * Results: |
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498 | * Returns TCL_OK is successful and TCL_ERROR is there is an error. |
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499 | * |
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500 | * Side effects: |
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501 | * Returns a result in the interpreter's result object. If there is |
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502 | * an error, the result is an error message. |
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503 | * |
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504 | *---------------------------------------------------------------------- |
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505 | */ |
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506 | |
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507 | static int |
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508 | InfoBodyCmd(dummy, interp, objc, objv) |
---|
509 | ClientData dummy; /* Not used. */ |
---|
510 | Tcl_Interp *interp; /* Current interpreter. */ |
---|
511 | int objc; /* Number of arguments. */ |
---|
512 | Tcl_Obj *CONST objv[]; /* Argument objects. */ |
---|
513 | { |
---|
514 | register Interp *iPtr = (Interp *) interp; |
---|
515 | char *name; |
---|
516 | Proc *procPtr; |
---|
517 | Tcl_Obj *bodyPtr, *resultPtr; |
---|
518 | |
---|
519 | if (objc != 3) { |
---|
520 | Tcl_WrongNumArgs(interp, 2, objv, "procname"); |
---|
521 | return TCL_ERROR; |
---|
522 | } |
---|
523 | |
---|
524 | name = Tcl_GetStringFromObj(objv[2], (int *) NULL); |
---|
525 | procPtr = TclFindProc(iPtr, name); |
---|
526 | if (procPtr == NULL) { |
---|
527 | Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
---|
528 | "\"", name, "\" isn't a procedure", (char *) NULL); |
---|
529 | return TCL_ERROR; |
---|
530 | } |
---|
531 | |
---|
532 | /* |
---|
533 | * we need to check if the body from this procedure had been generated |
---|
534 | * from a precompiled body. If that is the case, then the bodyPtr's |
---|
535 | * string representation is bogus, since sources are not available. |
---|
536 | * In order to make sure that later manipulations of the object do not |
---|
537 | * invalidate the internal representation, we make a copy of the string |
---|
538 | * representation and return that one, instead. |
---|
539 | */ |
---|
540 | |
---|
541 | bodyPtr = procPtr->bodyPtr; |
---|
542 | resultPtr = bodyPtr; |
---|
543 | if (bodyPtr->typePtr == &tclByteCodeType) { |
---|
544 | ByteCode *codePtr = (ByteCode *) bodyPtr->internalRep.otherValuePtr; |
---|
545 | |
---|
546 | if (codePtr->flags & TCL_BYTECODE_PRECOMPILED) { |
---|
547 | resultPtr = Tcl_NewStringObj(bodyPtr->bytes, bodyPtr->length); |
---|
548 | } |
---|
549 | } |
---|
550 | |
---|
551 | Tcl_SetObjResult(interp, resultPtr); |
---|
552 | return TCL_OK; |
---|
553 | } |
---|
554 | |
---|
555 | /* |
---|
556 | *---------------------------------------------------------------------- |
---|
557 | * |
---|
558 | * InfoCmdCountCmd -- |
---|
559 | * |
---|
560 | * Called to implement the "info cmdcount" command that returns the |
---|
561 | * number of commands that have been executed. Handles the following |
---|
562 | * syntax: |
---|
563 | * |
---|
564 | * info cmdcount |
---|
565 | * |
---|
566 | * Results: |
---|
567 | * Returns TCL_OK is successful and TCL_ERROR is there is an error. |
---|
568 | * |
---|
569 | * Side effects: |
---|
570 | * Returns a result in the interpreter's result object. If there is |
---|
571 | * an error, the result is an error message. |
---|
572 | * |
---|
573 | *---------------------------------------------------------------------- |
---|
574 | */ |
---|
575 | |
---|
576 | static int |
---|
577 | InfoCmdCountCmd(dummy, interp, objc, objv) |
---|
578 | ClientData dummy; /* Not used. */ |
---|
579 | Tcl_Interp *interp; /* Current interpreter. */ |
---|
580 | int objc; /* Number of arguments. */ |
---|
581 | Tcl_Obj *CONST objv[]; /* Argument objects. */ |
---|
582 | { |
---|
583 | Interp *iPtr = (Interp *) interp; |
---|
584 | |
---|
585 | if (objc != 2) { |
---|
586 | Tcl_WrongNumArgs(interp, 2, objv, NULL); |
---|
587 | return TCL_ERROR; |
---|
588 | } |
---|
589 | |
---|
590 | Tcl_SetIntObj(Tcl_GetObjResult(interp), iPtr->cmdCount); |
---|
591 | return TCL_OK; |
---|
592 | } |
---|
593 | |
---|
594 | /* |
---|
595 | *---------------------------------------------------------------------- |
---|
596 | * |
---|
597 | * InfoCommandsCmd -- |
---|
598 | * |
---|
599 | * Called to implement the "info commands" command that returns the |
---|
600 | * list of commands in the interpreter that match an optional pattern. |
---|
601 | * The pattern, if any, consists of an optional sequence of namespace |
---|
602 | * names separated by "::" qualifiers, which is followed by a |
---|
603 | * glob-style pattern that restricts which commands are returned. |
---|
604 | * Handles the following syntax: |
---|
605 | * |
---|
606 | * info commands ?pattern? |
---|
607 | * |
---|
608 | * Results: |
---|
609 | * Returns TCL_OK is successful and TCL_ERROR is there is an error. |
---|
610 | * |
---|
611 | * Side effects: |
---|
612 | * Returns a result in the interpreter's result object. If there is |
---|
613 | * an error, the result is an error message. |
---|
614 | * |
---|
615 | *---------------------------------------------------------------------- |
---|
616 | */ |
---|
617 | |
---|
618 | static int |
---|
619 | InfoCommandsCmd(dummy, interp, objc, objv) |
---|
620 | ClientData dummy; /* Not used. */ |
---|
621 | Tcl_Interp *interp; /* Current interpreter. */ |
---|
622 | int objc; /* Number of arguments. */ |
---|
623 | Tcl_Obj *CONST objv[]; /* Argument objects. */ |
---|
624 | { |
---|
625 | char *cmdName, *pattern, *simplePattern; |
---|
626 | register Tcl_HashEntry *entryPtr; |
---|
627 | Tcl_HashSearch search; |
---|
628 | Namespace *nsPtr; |
---|
629 | Namespace *globalNsPtr = (Namespace *) Tcl_GetGlobalNamespace(interp); |
---|
630 | Namespace *currNsPtr = (Namespace *) Tcl_GetCurrentNamespace(interp); |
---|
631 | Tcl_Obj *listPtr, *elemObjPtr; |
---|
632 | int specificNsInPattern = 0; /* Init. to avoid compiler warning. */ |
---|
633 | Tcl_Command cmd; |
---|
634 | |
---|
635 | /* |
---|
636 | * Get the pattern and find the "effective namespace" in which to |
---|
637 | * list commands. |
---|
638 | */ |
---|
639 | |
---|
640 | if (objc == 2) { |
---|
641 | simplePattern = NULL; |
---|
642 | nsPtr = currNsPtr; |
---|
643 | specificNsInPattern = 0; |
---|
644 | } else if (objc == 3) { |
---|
645 | /* |
---|
646 | * From the pattern, get the effective namespace and the simple |
---|
647 | * pattern (no namespace qualifiers or ::'s) at the end. If an |
---|
648 | * error was found while parsing the pattern, return it. Otherwise, |
---|
649 | * if the namespace wasn't found, just leave nsPtr NULL: we will |
---|
650 | * return an empty list since no commands there can be found. |
---|
651 | */ |
---|
652 | |
---|
653 | Namespace *dummy1NsPtr, *dummy2NsPtr; |
---|
654 | |
---|
655 | pattern = Tcl_GetStringFromObj(objv[2], (int *) NULL); |
---|
656 | TclGetNamespaceForQualName(interp, pattern, (Namespace *) NULL, |
---|
657 | /*flags*/ 0, &nsPtr, &dummy1NsPtr, &dummy2NsPtr, &simplePattern); |
---|
658 | |
---|
659 | if (nsPtr != NULL) { /* we successfully found the pattern's ns */ |
---|
660 | specificNsInPattern = (strcmp(simplePattern, pattern) != 0); |
---|
661 | } |
---|
662 | } else { |
---|
663 | Tcl_WrongNumArgs(interp, 2, objv, "?pattern?"); |
---|
664 | return TCL_ERROR; |
---|
665 | } |
---|
666 | |
---|
667 | /* |
---|
668 | * Scan through the effective namespace's command table and create a |
---|
669 | * list with all commands that match the pattern. If a specific |
---|
670 | * namespace was requested in the pattern, qualify the command names |
---|
671 | * with the namespace name. |
---|
672 | */ |
---|
673 | |
---|
674 | listPtr = Tcl_NewListObj(0, (Tcl_Obj **) NULL); |
---|
675 | |
---|
676 | if (nsPtr != NULL) { |
---|
677 | entryPtr = Tcl_FirstHashEntry(&nsPtr->cmdTable, &search); |
---|
678 | while (entryPtr != NULL) { |
---|
679 | cmdName = Tcl_GetHashKey(&nsPtr->cmdTable, entryPtr); |
---|
680 | if ((simplePattern == NULL) |
---|
681 | || Tcl_StringMatch(cmdName, simplePattern)) { |
---|
682 | if (specificNsInPattern) { |
---|
683 | cmd = (Tcl_Command) Tcl_GetHashValue(entryPtr); |
---|
684 | elemObjPtr = Tcl_NewObj(); |
---|
685 | Tcl_GetCommandFullName(interp, cmd, elemObjPtr); |
---|
686 | } else { |
---|
687 | elemObjPtr = Tcl_NewStringObj(cmdName, -1); |
---|
688 | } |
---|
689 | Tcl_ListObjAppendElement(interp, listPtr, elemObjPtr); |
---|
690 | } |
---|
691 | entryPtr = Tcl_NextHashEntry(&search); |
---|
692 | } |
---|
693 | |
---|
694 | /* |
---|
695 | * If the effective namespace isn't the global :: namespace, and a |
---|
696 | * specific namespace wasn't requested in the pattern, then add in |
---|
697 | * all global :: commands that match the simple pattern. Of course, |
---|
698 | * we add in only those commands that aren't hidden by a command in |
---|
699 | * the effective namespace. |
---|
700 | */ |
---|
701 | |
---|
702 | if ((nsPtr != globalNsPtr) && !specificNsInPattern) { |
---|
703 | entryPtr = Tcl_FirstHashEntry(&globalNsPtr->cmdTable, &search); |
---|
704 | while (entryPtr != NULL) { |
---|
705 | cmdName = Tcl_GetHashKey(&globalNsPtr->cmdTable, entryPtr); |
---|
706 | if ((simplePattern == NULL) |
---|
707 | || Tcl_StringMatch(cmdName, simplePattern)) { |
---|
708 | if (Tcl_FindHashEntry(&nsPtr->cmdTable, cmdName) == NULL) { |
---|
709 | Tcl_ListObjAppendElement(interp, listPtr, |
---|
710 | Tcl_NewStringObj(cmdName, -1)); |
---|
711 | } |
---|
712 | } |
---|
713 | entryPtr = Tcl_NextHashEntry(&search); |
---|
714 | } |
---|
715 | } |
---|
716 | } |
---|
717 | |
---|
718 | Tcl_SetObjResult(interp, listPtr); |
---|
719 | return TCL_OK; |
---|
720 | } |
---|
721 | |
---|
722 | /* |
---|
723 | *---------------------------------------------------------------------- |
---|
724 | * |
---|
725 | * InfoCompleteCmd -- |
---|
726 | * |
---|
727 | * Called to implement the "info complete" command that determines |
---|
728 | * whether a string is a complete Tcl command. Handles the following |
---|
729 | * syntax: |
---|
730 | * |
---|
731 | * info complete command |
---|
732 | * |
---|
733 | * Results: |
---|
734 | * Returns TCL_OK is successful and TCL_ERROR is there is an error. |
---|
735 | * |
---|
736 | * Side effects: |
---|
737 | * Returns a result in the interpreter's result object. If there is |
---|
738 | * an error, the result is an error message. |
---|
739 | * |
---|
740 | *---------------------------------------------------------------------- |
---|
741 | */ |
---|
742 | |
---|
743 | static int |
---|
744 | InfoCompleteCmd(dummy, interp, objc, objv) |
---|
745 | ClientData dummy; /* Not used. */ |
---|
746 | Tcl_Interp *interp; /* Current interpreter. */ |
---|
747 | int objc; /* Number of arguments. */ |
---|
748 | Tcl_Obj *CONST objv[]; /* Argument objects. */ |
---|
749 | { |
---|
750 | if (objc != 3) { |
---|
751 | Tcl_WrongNumArgs(interp, 2, objv, "command"); |
---|
752 | return TCL_ERROR; |
---|
753 | } |
---|
754 | |
---|
755 | if (TclObjCommandComplete(objv[2])) { |
---|
756 | Tcl_SetIntObj(Tcl_GetObjResult(interp), 1); |
---|
757 | } else { |
---|
758 | Tcl_SetIntObj(Tcl_GetObjResult(interp), 0); |
---|
759 | } |
---|
760 | |
---|
761 | return TCL_OK; |
---|
762 | } |
---|
763 | |
---|
764 | /* |
---|
765 | *---------------------------------------------------------------------- |
---|
766 | * |
---|
767 | * InfoDefaultCmd -- |
---|
768 | * |
---|
769 | * Called to implement the "info default" command that returns the |
---|
770 | * default value for a procedure argument. Handles the following |
---|
771 | * syntax: |
---|
772 | * |
---|
773 | * info default procName arg varName |
---|
774 | * |
---|
775 | * Results: |
---|
776 | * Returns TCL_OK is successful and TCL_ERROR is there is an error. |
---|
777 | * |
---|
778 | * Side effects: |
---|
779 | * Returns a result in the interpreter's result object. If there is |
---|
780 | * an error, the result is an error message. |
---|
781 | * |
---|
782 | *---------------------------------------------------------------------- |
---|
783 | */ |
---|
784 | |
---|
785 | static int |
---|
786 | InfoDefaultCmd(dummy, interp, objc, objv) |
---|
787 | ClientData dummy; /* Not used. */ |
---|
788 | Tcl_Interp *interp; /* Current interpreter. */ |
---|
789 | int objc; /* Number of arguments. */ |
---|
790 | Tcl_Obj *CONST objv[]; /* Argument objects. */ |
---|
791 | { |
---|
792 | Interp *iPtr = (Interp *) interp; |
---|
793 | char *procName, *argName, *varName; |
---|
794 | Proc *procPtr; |
---|
795 | CompiledLocal *localPtr; |
---|
796 | Tcl_Obj *valueObjPtr; |
---|
797 | |
---|
798 | if (objc != 5) { |
---|
799 | Tcl_WrongNumArgs(interp, 2, objv, "procname arg varname"); |
---|
800 | return TCL_ERROR; |
---|
801 | } |
---|
802 | |
---|
803 | procName = Tcl_GetStringFromObj(objv[2], (int *) NULL); |
---|
804 | argName = Tcl_GetStringFromObj(objv[3], (int *) NULL); |
---|
805 | |
---|
806 | procPtr = TclFindProc(iPtr, procName); |
---|
807 | if (procPtr == NULL) { |
---|
808 | Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
---|
809 | "\"", procName, "\" isn't a procedure", (char *) NULL); |
---|
810 | return TCL_ERROR; |
---|
811 | } |
---|
812 | |
---|
813 | for (localPtr = procPtr->firstLocalPtr; localPtr != NULL; |
---|
814 | localPtr = localPtr->nextPtr) { |
---|
815 | if (TclIsVarArgument(localPtr) |
---|
816 | && (strcmp(argName, localPtr->name) == 0)) { |
---|
817 | if (localPtr->defValuePtr != NULL) { |
---|
818 | valueObjPtr = Tcl_ObjSetVar2(interp, objv[4], NULL, |
---|
819 | localPtr->defValuePtr, 0); |
---|
820 | if (valueObjPtr == NULL) { |
---|
821 | defStoreError: |
---|
822 | varName = Tcl_GetStringFromObj(objv[4], (int *) NULL); |
---|
823 | Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
---|
824 | "couldn't store default value in variable \"", |
---|
825 | varName, "\"", (char *) NULL); |
---|
826 | return TCL_ERROR; |
---|
827 | } |
---|
828 | Tcl_SetIntObj(Tcl_GetObjResult(interp), 1); |
---|
829 | } else { |
---|
830 | Tcl_Obj *nullObjPtr = Tcl_NewObj(); |
---|
831 | valueObjPtr = Tcl_ObjSetVar2(interp, objv[4], NULL, |
---|
832 | nullObjPtr, 0); |
---|
833 | if (valueObjPtr == NULL) { |
---|
834 | Tcl_DecrRefCount(nullObjPtr); /* free unneeded obj */ |
---|
835 | goto defStoreError; |
---|
836 | } |
---|
837 | Tcl_SetIntObj(Tcl_GetObjResult(interp), 0); |
---|
838 | } |
---|
839 | return TCL_OK; |
---|
840 | } |
---|
841 | } |
---|
842 | |
---|
843 | Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
---|
844 | "procedure \"", procName, "\" doesn't have an argument \"", |
---|
845 | argName, "\"", (char *) NULL); |
---|
846 | return TCL_ERROR; |
---|
847 | } |
---|
848 | |
---|
849 | /* |
---|
850 | *---------------------------------------------------------------------- |
---|
851 | * |
---|
852 | * InfoExistsCmd -- |
---|
853 | * |
---|
854 | * Called to implement the "info exists" command that determines |
---|
855 | * whether a variable exists. Handles the following syntax: |
---|
856 | * |
---|
857 | * info exists varName |
---|
858 | * |
---|
859 | * Results: |
---|
860 | * Returns TCL_OK is successful and TCL_ERROR is there is an error. |
---|
861 | * |
---|
862 | * Side effects: |
---|
863 | * Returns a result in the interpreter's result object. If there is |
---|
864 | * an error, the result is an error message. |
---|
865 | * |
---|
866 | *---------------------------------------------------------------------- |
---|
867 | */ |
---|
868 | |
---|
869 | static int |
---|
870 | InfoExistsCmd(dummy, interp, objc, objv) |
---|
871 | ClientData dummy; /* Not used. */ |
---|
872 | Tcl_Interp *interp; /* Current interpreter. */ |
---|
873 | int objc; /* Number of arguments. */ |
---|
874 | Tcl_Obj *CONST objv[]; /* Argument objects. */ |
---|
875 | { |
---|
876 | char *varName; |
---|
877 | Var *varPtr, *arrayPtr; |
---|
878 | |
---|
879 | if (objc != 3) { |
---|
880 | Tcl_WrongNumArgs(interp, 2, objv, "varName"); |
---|
881 | return TCL_ERROR; |
---|
882 | } |
---|
883 | |
---|
884 | varName = Tcl_GetStringFromObj(objv[2], (int *) NULL); |
---|
885 | varPtr = TclLookupVar(interp, varName, (char *) NULL, |
---|
886 | TCL_PARSE_PART1, "access", |
---|
887 | /*createPart1*/ 0, /*createPart2*/ 0, &arrayPtr); |
---|
888 | if ((varPtr != NULL) && !TclIsVarUndefined(varPtr)) { |
---|
889 | Tcl_SetIntObj(Tcl_GetObjResult(interp), 1); |
---|
890 | } else { |
---|
891 | Tcl_SetIntObj(Tcl_GetObjResult(interp), 0); |
---|
892 | } |
---|
893 | return TCL_OK; |
---|
894 | } |
---|
895 | |
---|
896 | /* |
---|
897 | *---------------------------------------------------------------------- |
---|
898 | * |
---|
899 | * InfoGlobalsCmd -- |
---|
900 | * |
---|
901 | * Called to implement the "info globals" command that returns the list |
---|
902 | * of global variables matching an optional pattern. Handles the |
---|
903 | * following syntax: |
---|
904 | * |
---|
905 | * info globals ?pattern? |
---|
906 | * |
---|
907 | * Results: |
---|
908 | * Returns TCL_OK is successful and TCL_ERROR is there is an error. |
---|
909 | * |
---|
910 | * Side effects: |
---|
911 | * Returns a result in the interpreter's result object. If there is |
---|
912 | * an error, the result is an error message. |
---|
913 | * |
---|
914 | *---------------------------------------------------------------------- |
---|
915 | */ |
---|
916 | |
---|
917 | static int |
---|
918 | InfoGlobalsCmd(dummy, interp, objc, objv) |
---|
919 | ClientData dummy; /* Not used. */ |
---|
920 | Tcl_Interp *interp; /* Current interpreter. */ |
---|
921 | int objc; /* Number of arguments. */ |
---|
922 | Tcl_Obj *CONST objv[]; /* Argument objects. */ |
---|
923 | { |
---|
924 | char *varName, *pattern; |
---|
925 | Namespace *globalNsPtr = (Namespace *) Tcl_GetGlobalNamespace(interp); |
---|
926 | register Tcl_HashEntry *entryPtr; |
---|
927 | Tcl_HashSearch search; |
---|
928 | Var *varPtr; |
---|
929 | Tcl_Obj *listPtr; |
---|
930 | |
---|
931 | if (objc == 2) { |
---|
932 | pattern = NULL; |
---|
933 | } else if (objc == 3) { |
---|
934 | pattern = Tcl_GetStringFromObj(objv[2], (int *) NULL); |
---|
935 | } else { |
---|
936 | Tcl_WrongNumArgs(interp, 2, objv, "?pattern?"); |
---|
937 | return TCL_ERROR; |
---|
938 | } |
---|
939 | |
---|
940 | /* |
---|
941 | * Scan through the global :: namespace's variable table and create a |
---|
942 | * list of all global variables that match the pattern. |
---|
943 | */ |
---|
944 | |
---|
945 | listPtr = Tcl_NewListObj(0, (Tcl_Obj **) NULL); |
---|
946 | for (entryPtr = Tcl_FirstHashEntry(&globalNsPtr->varTable, &search); |
---|
947 | entryPtr != NULL; |
---|
948 | entryPtr = Tcl_NextHashEntry(&search)) { |
---|
949 | varPtr = (Var *) Tcl_GetHashValue(entryPtr); |
---|
950 | if (TclIsVarUndefined(varPtr)) { |
---|
951 | continue; |
---|
952 | } |
---|
953 | varName = Tcl_GetHashKey(&globalNsPtr->varTable, entryPtr); |
---|
954 | if ((pattern == NULL) || Tcl_StringMatch(varName, pattern)) { |
---|
955 | Tcl_ListObjAppendElement(interp, listPtr, |
---|
956 | Tcl_NewStringObj(varName, -1)); |
---|
957 | } |
---|
958 | } |
---|
959 | Tcl_SetObjResult(interp, listPtr); |
---|
960 | return TCL_OK; |
---|
961 | } |
---|
962 | |
---|
963 | /* |
---|
964 | *---------------------------------------------------------------------- |
---|
965 | * |
---|
966 | * InfoLevelCmd -- |
---|
967 | * |
---|
968 | * Called to implement the "info level" command that returns |
---|
969 | * information about the call stack. Handles the following syntax: |
---|
970 | * |
---|
971 | * info level ?number? |
---|
972 | * |
---|
973 | * Results: |
---|
974 | * Returns TCL_OK is successful and TCL_ERROR is there is an error. |
---|
975 | * |
---|
976 | * Side effects: |
---|
977 | * Returns a result in the interpreter's result object. If there is |
---|
978 | * an error, the result is an error message. |
---|
979 | * |
---|
980 | *---------------------------------------------------------------------- |
---|
981 | */ |
---|
982 | |
---|
983 | static int |
---|
984 | InfoLevelCmd(dummy, interp, objc, objv) |
---|
985 | ClientData dummy; /* Not used. */ |
---|
986 | Tcl_Interp *interp; /* Current interpreter. */ |
---|
987 | int objc; /* Number of arguments. */ |
---|
988 | Tcl_Obj *CONST objv[]; /* Argument objects. */ |
---|
989 | { |
---|
990 | Interp *iPtr = (Interp *) interp; |
---|
991 | int level; |
---|
992 | CallFrame *framePtr; |
---|
993 | Tcl_Obj *listPtr; |
---|
994 | |
---|
995 | if (objc == 2) { /* just "info level" */ |
---|
996 | if (iPtr->varFramePtr == NULL) { |
---|
997 | Tcl_SetIntObj(Tcl_GetObjResult(interp), 0); |
---|
998 | } else { |
---|
999 | Tcl_SetIntObj(Tcl_GetObjResult(interp), iPtr->varFramePtr->level); |
---|
1000 | } |
---|
1001 | return TCL_OK; |
---|
1002 | } else if (objc == 3) { |
---|
1003 | if (Tcl_GetIntFromObj(interp, objv[2], &level) != TCL_OK) { |
---|
1004 | return TCL_ERROR; |
---|
1005 | } |
---|
1006 | if (level <= 0) { |
---|
1007 | if (iPtr->varFramePtr == NULL) { |
---|
1008 | levelError: |
---|
1009 | Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
---|
1010 | "bad level \"", |
---|
1011 | Tcl_GetStringFromObj(objv[2], (int *) NULL), |
---|
1012 | "\"", (char *) NULL); |
---|
1013 | return TCL_ERROR; |
---|
1014 | } |
---|
1015 | level += iPtr->varFramePtr->level; |
---|
1016 | } |
---|
1017 | for (framePtr = iPtr->varFramePtr; framePtr != NULL; |
---|
1018 | framePtr = framePtr->callerVarPtr) { |
---|
1019 | if (framePtr->level == level) { |
---|
1020 | break; |
---|
1021 | } |
---|
1022 | } |
---|
1023 | if (framePtr == NULL) { |
---|
1024 | goto levelError; |
---|
1025 | } |
---|
1026 | |
---|
1027 | listPtr = Tcl_NewListObj(framePtr->objc, framePtr->objv); |
---|
1028 | Tcl_SetObjResult(interp, listPtr); |
---|
1029 | return TCL_OK; |
---|
1030 | } |
---|
1031 | |
---|
1032 | Tcl_WrongNumArgs(interp, 2, objv, "?number?"); |
---|
1033 | return TCL_ERROR; |
---|
1034 | } |
---|
1035 | |
---|
1036 | /* |
---|
1037 | *---------------------------------------------------------------------- |
---|
1038 | * |
---|
1039 | * InfoLibraryCmd -- |
---|
1040 | * |
---|
1041 | * Called to implement the "info library" command that returns the |
---|
1042 | * library directory for the Tcl installation. Handles the following |
---|
1043 | * syntax: |
---|
1044 | * |
---|
1045 | * info library |
---|
1046 | * |
---|
1047 | * Results: |
---|
1048 | * Returns TCL_OK is successful and TCL_ERROR is there is an error. |
---|
1049 | * |
---|
1050 | * Side effects: |
---|
1051 | * Returns a result in the interpreter's result object. If there is |
---|
1052 | * an error, the result is an error message. |
---|
1053 | * |
---|
1054 | *---------------------------------------------------------------------- |
---|
1055 | */ |
---|
1056 | |
---|
1057 | static int |
---|
1058 | InfoLibraryCmd(dummy, interp, objc, objv) |
---|
1059 | ClientData dummy; /* Not used. */ |
---|
1060 | Tcl_Interp *interp; /* Current interpreter. */ |
---|
1061 | int objc; /* Number of arguments. */ |
---|
1062 | Tcl_Obj *CONST objv[]; /* Argument objects. */ |
---|
1063 | { |
---|
1064 | char *libDirName; |
---|
1065 | |
---|
1066 | if (objc != 2) { |
---|
1067 | Tcl_WrongNumArgs(interp, 2, objv, NULL); |
---|
1068 | return TCL_ERROR; |
---|
1069 | } |
---|
1070 | |
---|
1071 | libDirName = Tcl_GetVar(interp, "tcl_library", TCL_GLOBAL_ONLY); |
---|
1072 | if (libDirName != NULL) { |
---|
1073 | Tcl_SetStringObj(Tcl_GetObjResult(interp), libDirName, -1); |
---|
1074 | return TCL_OK; |
---|
1075 | } |
---|
1076 | Tcl_SetStringObj(Tcl_GetObjResult(interp), |
---|
1077 | "no library has been specified for Tcl", -1); |
---|
1078 | return TCL_ERROR; |
---|
1079 | } |
---|
1080 | |
---|
1081 | /* |
---|
1082 | *---------------------------------------------------------------------- |
---|
1083 | * |
---|
1084 | * InfoLocalsCmd -- |
---|
1085 | * |
---|
1086 | * Called to implement the "info locals" command to return a list of |
---|
1087 | * local variables that match an optional pattern. Handles the |
---|
1088 | * following syntax: |
---|
1089 | * |
---|
1090 | * info locals ?pattern? |
---|
1091 | * |
---|
1092 | * Results: |
---|
1093 | * Returns TCL_OK is successful and TCL_ERROR is there is an error. |
---|
1094 | * |
---|
1095 | * Side effects: |
---|
1096 | * Returns a result in the interpreter's result object. If there is |
---|
1097 | * an error, the result is an error message. |
---|
1098 | * |
---|
1099 | *---------------------------------------------------------------------- |
---|
1100 | */ |
---|
1101 | |
---|
1102 | static int |
---|
1103 | InfoLocalsCmd(dummy, interp, objc, objv) |
---|
1104 | ClientData dummy; /* Not used. */ |
---|
1105 | Tcl_Interp *interp; /* Current interpreter. */ |
---|
1106 | int objc; /* Number of arguments. */ |
---|
1107 | Tcl_Obj *CONST objv[]; /* Argument objects. */ |
---|
1108 | { |
---|
1109 | Interp *iPtr = (Interp *) interp; |
---|
1110 | char *pattern; |
---|
1111 | Tcl_Obj *listPtr; |
---|
1112 | |
---|
1113 | if (objc == 2) { |
---|
1114 | pattern = NULL; |
---|
1115 | } else if (objc == 3) { |
---|
1116 | pattern = Tcl_GetStringFromObj(objv[2], (int *) NULL); |
---|
1117 | } else { |
---|
1118 | Tcl_WrongNumArgs(interp, 2, objv, "?pattern?"); |
---|
1119 | return TCL_ERROR; |
---|
1120 | } |
---|
1121 | |
---|
1122 | if (iPtr->varFramePtr == NULL || !iPtr->varFramePtr->isProcCallFrame) { |
---|
1123 | return TCL_OK; |
---|
1124 | } |
---|
1125 | |
---|
1126 | /* |
---|
1127 | * Return a list containing names of first the compiled locals (i.e. the |
---|
1128 | * ones stored in the call frame), then the variables in the local hash |
---|
1129 | * table (if one exists). |
---|
1130 | */ |
---|
1131 | |
---|
1132 | listPtr = Tcl_NewListObj(0, (Tcl_Obj **) NULL); |
---|
1133 | AppendLocals(interp, listPtr, pattern, 0); |
---|
1134 | Tcl_SetObjResult(interp, listPtr); |
---|
1135 | return TCL_OK; |
---|
1136 | } |
---|
1137 | |
---|
1138 | /* |
---|
1139 | *---------------------------------------------------------------------- |
---|
1140 | * |
---|
1141 | * AppendLocals -- |
---|
1142 | * |
---|
1143 | * Append the local variables for the current frame to the |
---|
1144 | * specified list object. |
---|
1145 | * |
---|
1146 | * Results: |
---|
1147 | * None. |
---|
1148 | * |
---|
1149 | * Side effects: |
---|
1150 | * None. |
---|
1151 | * |
---|
1152 | *---------------------------------------------------------------------- |
---|
1153 | */ |
---|
1154 | |
---|
1155 | static void |
---|
1156 | AppendLocals(interp, listPtr, pattern, includeLinks) |
---|
1157 | Tcl_Interp *interp; /* Current interpreter. */ |
---|
1158 | Tcl_Obj *listPtr; /* List object to append names to. */ |
---|
1159 | char *pattern; /* Pattern to match against. */ |
---|
1160 | int includeLinks; /* 1 if upvars should be included, else 0. */ |
---|
1161 | { |
---|
1162 | Interp *iPtr = (Interp *) interp; |
---|
1163 | CompiledLocal *localPtr; |
---|
1164 | Var *varPtr; |
---|
1165 | int i, localVarCt; |
---|
1166 | char *varName; |
---|
1167 | Tcl_HashTable *localVarTablePtr; |
---|
1168 | register Tcl_HashEntry *entryPtr; |
---|
1169 | Tcl_HashSearch search; |
---|
1170 | |
---|
1171 | localPtr = iPtr->varFramePtr->procPtr->firstLocalPtr; |
---|
1172 | localVarCt = iPtr->varFramePtr->numCompiledLocals; |
---|
1173 | varPtr = iPtr->varFramePtr->compiledLocals; |
---|
1174 | localVarTablePtr = iPtr->varFramePtr->varTablePtr; |
---|
1175 | |
---|
1176 | for (i = 0; i < localVarCt; i++) { |
---|
1177 | /* |
---|
1178 | * Skip nameless (temporary) variables and undefined variables |
---|
1179 | */ |
---|
1180 | |
---|
1181 | if (!TclIsVarTemporary(localPtr) && !TclIsVarUndefined(varPtr)) { |
---|
1182 | varName = varPtr->name; |
---|
1183 | if ((pattern == NULL) || Tcl_StringMatch(varName, pattern)) { |
---|
1184 | Tcl_ListObjAppendElement(interp, listPtr, |
---|
1185 | Tcl_NewStringObj(varName, -1)); |
---|
1186 | } |
---|
1187 | } |
---|
1188 | varPtr++; |
---|
1189 | localPtr = localPtr->nextPtr; |
---|
1190 | } |
---|
1191 | |
---|
1192 | if (localVarTablePtr != NULL) { |
---|
1193 | for (entryPtr = Tcl_FirstHashEntry(localVarTablePtr, &search); |
---|
1194 | entryPtr != NULL; |
---|
1195 | entryPtr = Tcl_NextHashEntry(&search)) { |
---|
1196 | varPtr = (Var *) Tcl_GetHashValue(entryPtr); |
---|
1197 | if (!TclIsVarUndefined(varPtr) |
---|
1198 | && (includeLinks || !TclIsVarLink(varPtr))) { |
---|
1199 | varName = Tcl_GetHashKey(localVarTablePtr, entryPtr); |
---|
1200 | if ((pattern == NULL) |
---|
1201 | || Tcl_StringMatch(varName, pattern)) { |
---|
1202 | Tcl_ListObjAppendElement(interp, listPtr, |
---|
1203 | Tcl_NewStringObj(varName, -1)); |
---|
1204 | } |
---|
1205 | } |
---|
1206 | } |
---|
1207 | } |
---|
1208 | } |
---|
1209 | |
---|
1210 | /* |
---|
1211 | *---------------------------------------------------------------------- |
---|
1212 | * |
---|
1213 | * InfoNameOfExecutableCmd -- |
---|
1214 | * |
---|
1215 | * Called to implement the "info nameofexecutable" command that returns |
---|
1216 | * the name of the binary file running this application. Handles the |
---|
1217 | * following syntax: |
---|
1218 | * |
---|
1219 | * info nameofexecutable |
---|
1220 | * |
---|
1221 | * Results: |
---|
1222 | * Returns TCL_OK is successful and TCL_ERROR is there is an error. |
---|
1223 | * |
---|
1224 | * Side effects: |
---|
1225 | * Returns a result in the interpreter's result object. If there is |
---|
1226 | * an error, the result is an error message. |
---|
1227 | * |
---|
1228 | *---------------------------------------------------------------------- |
---|
1229 | */ |
---|
1230 | |
---|
1231 | static int |
---|
1232 | InfoNameOfExecutableCmd(dummy, interp, objc, objv) |
---|
1233 | ClientData dummy; /* Not used. */ |
---|
1234 | Tcl_Interp *interp; /* Current interpreter. */ |
---|
1235 | int objc; /* Number of arguments. */ |
---|
1236 | Tcl_Obj *CONST objv[]; /* Argument objects. */ |
---|
1237 | { |
---|
1238 | CONST char *nameOfExecutable; |
---|
1239 | |
---|
1240 | if (objc != 2) { |
---|
1241 | Tcl_WrongNumArgs(interp, 2, objv, NULL); |
---|
1242 | return TCL_ERROR; |
---|
1243 | } |
---|
1244 | |
---|
1245 | nameOfExecutable = Tcl_GetNameOfExecutable(); |
---|
1246 | |
---|
1247 | if (nameOfExecutable != NULL) { |
---|
1248 | Tcl_SetStringObj(Tcl_GetObjResult(interp), (char *)nameOfExecutable, -1); |
---|
1249 | } |
---|
1250 | return TCL_OK; |
---|
1251 | } |
---|
1252 | |
---|
1253 | /* |
---|
1254 | *---------------------------------------------------------------------- |
---|
1255 | * |
---|
1256 | * InfoPatchLevelCmd -- |
---|
1257 | * |
---|
1258 | * Called to implement the "info patchlevel" command that returns the |
---|
1259 | * default value for an argument to a procedure. Handles the following |
---|
1260 | * syntax: |
---|
1261 | * |
---|
1262 | * info patchlevel |
---|
1263 | * |
---|
1264 | * Results: |
---|
1265 | * Returns TCL_OK is successful and TCL_ERROR is there is an error. |
---|
1266 | * |
---|
1267 | * Side effects: |
---|
1268 | * Returns a result in the interpreter's result object. If there is |
---|
1269 | * an error, the result is an error message. |
---|
1270 | * |
---|
1271 | *---------------------------------------------------------------------- |
---|
1272 | */ |
---|
1273 | |
---|
1274 | static int |
---|
1275 | InfoPatchLevelCmd(dummy, interp, objc, objv) |
---|
1276 | ClientData dummy; /* Not used. */ |
---|
1277 | Tcl_Interp *interp; /* Current interpreter. */ |
---|
1278 | int objc; /* Number of arguments. */ |
---|
1279 | Tcl_Obj *CONST objv[]; /* Argument objects. */ |
---|
1280 | { |
---|
1281 | char *patchlevel; |
---|
1282 | |
---|
1283 | if (objc != 2) { |
---|
1284 | Tcl_WrongNumArgs(interp, 2, objv, NULL); |
---|
1285 | return TCL_ERROR; |
---|
1286 | } |
---|
1287 | |
---|
1288 | patchlevel = Tcl_GetVar(interp, "tcl_patchLevel", |
---|
1289 | (TCL_GLOBAL_ONLY | TCL_LEAVE_ERR_MSG)); |
---|
1290 | if (patchlevel != NULL) { |
---|
1291 | Tcl_SetStringObj(Tcl_GetObjResult(interp), patchlevel, -1); |
---|
1292 | return TCL_OK; |
---|
1293 | } |
---|
1294 | return TCL_ERROR; |
---|
1295 | } |
---|
1296 | |
---|
1297 | /* |
---|
1298 | *---------------------------------------------------------------------- |
---|
1299 | * |
---|
1300 | * InfoProcsCmd -- |
---|
1301 | * |
---|
1302 | * Called to implement the "info procs" command that returns the |
---|
1303 | * procedures in the current namespace that match an optional pattern. |
---|
1304 | * Handles the following syntax: |
---|
1305 | * |
---|
1306 | * info procs ?pattern? |
---|
1307 | * |
---|
1308 | * Results: |
---|
1309 | * Returns TCL_OK is successful and TCL_ERROR is there is an error. |
---|
1310 | * |
---|
1311 | * Side effects: |
---|
1312 | * Returns a result in the interpreter's result object. If there is |
---|
1313 | * an error, the result is an error message. |
---|
1314 | * |
---|
1315 | *---------------------------------------------------------------------- |
---|
1316 | */ |
---|
1317 | |
---|
1318 | static int |
---|
1319 | InfoProcsCmd(dummy, interp, objc, objv) |
---|
1320 | ClientData dummy; /* Not used. */ |
---|
1321 | Tcl_Interp *interp; /* Current interpreter. */ |
---|
1322 | int objc; /* Number of arguments. */ |
---|
1323 | Tcl_Obj *CONST objv[]; /* Argument objects. */ |
---|
1324 | { |
---|
1325 | char *cmdName, *pattern; |
---|
1326 | Namespace *currNsPtr = (Namespace *) Tcl_GetCurrentNamespace(interp); |
---|
1327 | register Tcl_HashEntry *entryPtr; |
---|
1328 | Tcl_HashSearch search; |
---|
1329 | Command *cmdPtr; |
---|
1330 | Tcl_Obj *listPtr; |
---|
1331 | |
---|
1332 | if (objc == 2) { |
---|
1333 | pattern = NULL; |
---|
1334 | } else if (objc == 3) { |
---|
1335 | pattern = Tcl_GetStringFromObj(objv[2], (int *) NULL); |
---|
1336 | } else { |
---|
1337 | Tcl_WrongNumArgs(interp, 2, objv, "?pattern?"); |
---|
1338 | return TCL_ERROR; |
---|
1339 | } |
---|
1340 | |
---|
1341 | /* |
---|
1342 | * Scan through the current namespace's command table and return a list |
---|
1343 | * of all procs that match the pattern. |
---|
1344 | */ |
---|
1345 | |
---|
1346 | listPtr = Tcl_NewListObj(0, (Tcl_Obj **) NULL); |
---|
1347 | for (entryPtr = Tcl_FirstHashEntry(&currNsPtr->cmdTable, &search); |
---|
1348 | entryPtr != NULL; |
---|
1349 | entryPtr = Tcl_NextHashEntry(&search)) { |
---|
1350 | cmdName = Tcl_GetHashKey(&currNsPtr->cmdTable, entryPtr); |
---|
1351 | cmdPtr = (Command *) Tcl_GetHashValue(entryPtr); |
---|
1352 | if (TclIsProc(cmdPtr)) { |
---|
1353 | if ((pattern == NULL) || Tcl_StringMatch(cmdName, pattern)) { |
---|
1354 | Tcl_ListObjAppendElement(interp, listPtr, |
---|
1355 | Tcl_NewStringObj(cmdName, -1)); |
---|
1356 | } |
---|
1357 | } |
---|
1358 | } |
---|
1359 | Tcl_SetObjResult(interp, listPtr); |
---|
1360 | return TCL_OK; |
---|
1361 | } |
---|
1362 | |
---|
1363 | /* |
---|
1364 | *---------------------------------------------------------------------- |
---|
1365 | * |
---|
1366 | * InfoScriptCmd -- |
---|
1367 | * |
---|
1368 | * Called to implement the "info script" command that returns the |
---|
1369 | * script file that is currently being evaluated. Handles the |
---|
1370 | * following syntax: |
---|
1371 | * |
---|
1372 | * info script |
---|
1373 | * |
---|
1374 | * Results: |
---|
1375 | * Returns TCL_OK is successful and TCL_ERROR is there is an error. |
---|
1376 | * |
---|
1377 | * Side effects: |
---|
1378 | * Returns a result in the interpreter's result object. If there is |
---|
1379 | * an error, the result is an error message. |
---|
1380 | * |
---|
1381 | *---------------------------------------------------------------------- |
---|
1382 | */ |
---|
1383 | |
---|
1384 | static int |
---|
1385 | InfoScriptCmd(dummy, interp, objc, objv) |
---|
1386 | ClientData dummy; /* Not used. */ |
---|
1387 | Tcl_Interp *interp; /* Current interpreter. */ |
---|
1388 | int objc; /* Number of arguments. */ |
---|
1389 | Tcl_Obj *CONST objv[]; /* Argument objects. */ |
---|
1390 | { |
---|
1391 | Interp *iPtr = (Interp *) interp; |
---|
1392 | if (objc != 2) { |
---|
1393 | Tcl_WrongNumArgs(interp, 2, objv, NULL); |
---|
1394 | return TCL_ERROR; |
---|
1395 | } |
---|
1396 | |
---|
1397 | if (iPtr->scriptFile != NULL) { |
---|
1398 | Tcl_SetStringObj(Tcl_GetObjResult(interp), iPtr->scriptFile, -1); |
---|
1399 | } |
---|
1400 | return TCL_OK; |
---|
1401 | } |
---|
1402 | |
---|
1403 | /* |
---|
1404 | *---------------------------------------------------------------------- |
---|
1405 | * |
---|
1406 | * InfoSharedlibCmd -- |
---|
1407 | * |
---|
1408 | * Called to implement the "info sharedlibextension" command that |
---|
1409 | * returns the file extension used for shared libraries. Handles the |
---|
1410 | * following syntax: |
---|
1411 | * |
---|
1412 | * info sharedlibextension |
---|
1413 | * |
---|
1414 | * Results: |
---|
1415 | * Returns TCL_OK is successful and TCL_ERROR is there is an error. |
---|
1416 | * |
---|
1417 | * Side effects: |
---|
1418 | * Returns a result in the interpreter's result object. If there is |
---|
1419 | * an error, the result is an error message. |
---|
1420 | * |
---|
1421 | *---------------------------------------------------------------------- |
---|
1422 | */ |
---|
1423 | |
---|
1424 | static int |
---|
1425 | InfoSharedlibCmd(dummy, interp, objc, objv) |
---|
1426 | ClientData dummy; /* Not used. */ |
---|
1427 | Tcl_Interp *interp; /* Current interpreter. */ |
---|
1428 | int objc; /* Number of arguments. */ |
---|
1429 | Tcl_Obj *CONST objv[]; /* Argument objects. */ |
---|
1430 | { |
---|
1431 | if (objc != 2) { |
---|
1432 | Tcl_WrongNumArgs(interp, 2, objv, NULL); |
---|
1433 | return TCL_ERROR; |
---|
1434 | } |
---|
1435 | |
---|
1436 | #ifdef TCL_SHLIB_EXT |
---|
1437 | Tcl_SetStringObj(Tcl_GetObjResult(interp), TCL_SHLIB_EXT, -1); |
---|
1438 | #endif |
---|
1439 | return TCL_OK; |
---|
1440 | } |
---|
1441 | |
---|
1442 | /* |
---|
1443 | *---------------------------------------------------------------------- |
---|
1444 | * |
---|
1445 | * InfoTclVersionCmd -- |
---|
1446 | * |
---|
1447 | * Called to implement the "info tclversion" command that returns the |
---|
1448 | * version number for this Tcl library. Handles the following syntax: |
---|
1449 | * |
---|
1450 | * info tclversion |
---|
1451 | * |
---|
1452 | * Results: |
---|
1453 | * Returns TCL_OK is successful and TCL_ERROR is there is an error. |
---|
1454 | * |
---|
1455 | * Side effects: |
---|
1456 | * Returns a result in the interpreter's result object. If there is |
---|
1457 | * an error, the result is an error message. |
---|
1458 | * |
---|
1459 | *---------------------------------------------------------------------- |
---|
1460 | */ |
---|
1461 | |
---|
1462 | static int |
---|
1463 | InfoTclVersionCmd(dummy, interp, objc, objv) |
---|
1464 | ClientData dummy; /* Not used. */ |
---|
1465 | Tcl_Interp *interp; /* Current interpreter. */ |
---|
1466 | int objc; /* Number of arguments. */ |
---|
1467 | Tcl_Obj *CONST objv[]; /* Argument objects. */ |
---|
1468 | { |
---|
1469 | char *version; |
---|
1470 | |
---|
1471 | if (objc != 2) { |
---|
1472 | Tcl_WrongNumArgs(interp, 2, objv, NULL); |
---|
1473 | return TCL_ERROR; |
---|
1474 | } |
---|
1475 | |
---|
1476 | version = Tcl_GetVar(interp, "tcl_version", |
---|
1477 | (TCL_GLOBAL_ONLY | TCL_LEAVE_ERR_MSG)); |
---|
1478 | if (version != NULL) { |
---|
1479 | Tcl_SetStringObj(Tcl_GetObjResult(interp), version, -1); |
---|
1480 | return TCL_OK; |
---|
1481 | } |
---|
1482 | return TCL_ERROR; |
---|
1483 | } |
---|
1484 | |
---|
1485 | /* |
---|
1486 | *---------------------------------------------------------------------- |
---|
1487 | * |
---|
1488 | * InfoVarsCmd -- |
---|
1489 | * |
---|
1490 | * Called to implement the "info vars" command that returns the |
---|
1491 | * list of variables in the interpreter that match an optional pattern. |
---|
1492 | * The pattern, if any, consists of an optional sequence of namespace |
---|
1493 | * names separated by "::" qualifiers, which is followed by a |
---|
1494 | * glob-style pattern that restricts which variables are returned. |
---|
1495 | * Handles the following syntax: |
---|
1496 | * |
---|
1497 | * info vars ?pattern? |
---|
1498 | * |
---|
1499 | * Results: |
---|
1500 | * Returns TCL_OK is successful and TCL_ERROR is there is an error. |
---|
1501 | * |
---|
1502 | * Side effects: |
---|
1503 | * Returns a result in the interpreter's result object. If there is |
---|
1504 | * an error, the result is an error message. |
---|
1505 | * |
---|
1506 | *---------------------------------------------------------------------- |
---|
1507 | */ |
---|
1508 | |
---|
1509 | static int |
---|
1510 | InfoVarsCmd(dummy, interp, objc, objv) |
---|
1511 | ClientData dummy; /* Not used. */ |
---|
1512 | Tcl_Interp *interp; /* Current interpreter. */ |
---|
1513 | int objc; /* Number of arguments. */ |
---|
1514 | Tcl_Obj *CONST objv[]; /* Argument objects. */ |
---|
1515 | { |
---|
1516 | Interp *iPtr = (Interp *) interp; |
---|
1517 | char *varName, *pattern, *simplePattern; |
---|
1518 | register Tcl_HashEntry *entryPtr; |
---|
1519 | Tcl_HashSearch search; |
---|
1520 | Var *varPtr; |
---|
1521 | Namespace *nsPtr; |
---|
1522 | Namespace *globalNsPtr = (Namespace *) Tcl_GetGlobalNamespace(interp); |
---|
1523 | Namespace *currNsPtr = (Namespace *) Tcl_GetCurrentNamespace(interp); |
---|
1524 | Tcl_Obj *listPtr, *elemObjPtr; |
---|
1525 | int specificNsInPattern = 0; /* Init. to avoid compiler warning. */ |
---|
1526 | |
---|
1527 | /* |
---|
1528 | * Get the pattern and find the "effective namespace" in which to |
---|
1529 | * list variables. We only use this effective namespace if there's |
---|
1530 | * no active Tcl procedure frame. |
---|
1531 | */ |
---|
1532 | |
---|
1533 | if (objc == 2) { |
---|
1534 | simplePattern = NULL; |
---|
1535 | nsPtr = currNsPtr; |
---|
1536 | specificNsInPattern = 0; |
---|
1537 | } else if (objc == 3) { |
---|
1538 | /* |
---|
1539 | * From the pattern, get the effective namespace and the simple |
---|
1540 | * pattern (no namespace qualifiers or ::'s) at the end. If an |
---|
1541 | * error was found while parsing the pattern, return it. Otherwise, |
---|
1542 | * if the namespace wasn't found, just leave nsPtr NULL: we will |
---|
1543 | * return an empty list since no variables there can be found. |
---|
1544 | */ |
---|
1545 | |
---|
1546 | Namespace *dummy1NsPtr, *dummy2NsPtr; |
---|
1547 | |
---|
1548 | pattern = Tcl_GetStringFromObj(objv[2], (int *) NULL); |
---|
1549 | TclGetNamespaceForQualName(interp, pattern, (Namespace *) NULL, |
---|
1550 | /*flags*/ 0, &nsPtr, &dummy1NsPtr, &dummy2NsPtr, &simplePattern); |
---|
1551 | |
---|
1552 | if (nsPtr != NULL) { /* we successfully found the pattern's ns */ |
---|
1553 | specificNsInPattern = (strcmp(simplePattern, pattern) != 0); |
---|
1554 | } |
---|
1555 | } else { |
---|
1556 | Tcl_WrongNumArgs(interp, 2, objv, "?pattern?"); |
---|
1557 | return TCL_ERROR; |
---|
1558 | } |
---|
1559 | |
---|
1560 | /* |
---|
1561 | * If the namespace specified in the pattern wasn't found, just return. |
---|
1562 | */ |
---|
1563 | |
---|
1564 | if (nsPtr == NULL) { |
---|
1565 | return TCL_OK; |
---|
1566 | } |
---|
1567 | |
---|
1568 | listPtr = Tcl_NewListObj(0, (Tcl_Obj **) NULL); |
---|
1569 | |
---|
1570 | if ((iPtr->varFramePtr == NULL) |
---|
1571 | || !iPtr->varFramePtr->isProcCallFrame |
---|
1572 | || specificNsInPattern) { |
---|
1573 | /* |
---|
1574 | * There is no frame pointer, the frame pointer was pushed only |
---|
1575 | * to activate a namespace, or we are in a procedure call frame |
---|
1576 | * but a specific namespace was specified. Create a list containing |
---|
1577 | * only the variables in the effective namespace's variable table. |
---|
1578 | */ |
---|
1579 | |
---|
1580 | entryPtr = Tcl_FirstHashEntry(&nsPtr->varTable, &search); |
---|
1581 | while (entryPtr != NULL) { |
---|
1582 | varPtr = (Var *) Tcl_GetHashValue(entryPtr); |
---|
1583 | if (!TclIsVarUndefined(varPtr) |
---|
1584 | || (varPtr->flags & VAR_NAMESPACE_VAR)) { |
---|
1585 | varName = Tcl_GetHashKey(&nsPtr->varTable, entryPtr); |
---|
1586 | if ((simplePattern == NULL) |
---|
1587 | || Tcl_StringMatch(varName, simplePattern)) { |
---|
1588 | if (specificNsInPattern) { |
---|
1589 | elemObjPtr = Tcl_NewObj(); |
---|
1590 | Tcl_GetVariableFullName(interp, (Tcl_Var) varPtr, |
---|
1591 | elemObjPtr); |
---|
1592 | } else { |
---|
1593 | elemObjPtr = Tcl_NewStringObj(varName, -1); |
---|
1594 | } |
---|
1595 | Tcl_ListObjAppendElement(interp, listPtr, elemObjPtr); |
---|
1596 | } |
---|
1597 | } |
---|
1598 | entryPtr = Tcl_NextHashEntry(&search); |
---|
1599 | } |
---|
1600 | |
---|
1601 | /* |
---|
1602 | * If the effective namespace isn't the global :: namespace, and a |
---|
1603 | * specific namespace wasn't requested in the pattern (i.e., the |
---|
1604 | * pattern only specifies variable names), then add in all global :: |
---|
1605 | * variables that match the simple pattern. Of course, add in only |
---|
1606 | * those variables that aren't hidden by a variable in the effective |
---|
1607 | * namespace. |
---|
1608 | */ |
---|
1609 | |
---|
1610 | if ((nsPtr != globalNsPtr) && !specificNsInPattern) { |
---|
1611 | entryPtr = Tcl_FirstHashEntry(&globalNsPtr->varTable, &search); |
---|
1612 | while (entryPtr != NULL) { |
---|
1613 | varPtr = (Var *) Tcl_GetHashValue(entryPtr); |
---|
1614 | if (!TclIsVarUndefined(varPtr) |
---|
1615 | || (varPtr->flags & VAR_NAMESPACE_VAR)) { |
---|
1616 | varName = Tcl_GetHashKey(&globalNsPtr->varTable, |
---|
1617 | entryPtr); |
---|
1618 | if ((simplePattern == NULL) |
---|
1619 | || Tcl_StringMatch(varName, simplePattern)) { |
---|
1620 | if (Tcl_FindHashEntry(&nsPtr->varTable, varName) == NULL) { |
---|
1621 | Tcl_ListObjAppendElement(interp, listPtr, |
---|
1622 | Tcl_NewStringObj(varName, -1)); |
---|
1623 | } |
---|
1624 | } |
---|
1625 | } |
---|
1626 | entryPtr = Tcl_NextHashEntry(&search); |
---|
1627 | } |
---|
1628 | } |
---|
1629 | } else { |
---|
1630 | AppendLocals(interp, listPtr, simplePattern, 1); |
---|
1631 | } |
---|
1632 | |
---|
1633 | Tcl_SetObjResult(interp, listPtr); |
---|
1634 | return TCL_OK; |
---|
1635 | } |
---|
1636 | |
---|
1637 | /* |
---|
1638 | *---------------------------------------------------------------------- |
---|
1639 | * |
---|
1640 | * Tcl_JoinObjCmd -- |
---|
1641 | * |
---|
1642 | * This procedure is invoked to process the "join" Tcl command. |
---|
1643 | * See the user documentation for details on what it does. |
---|
1644 | * |
---|
1645 | * Results: |
---|
1646 | * A standard Tcl object result. |
---|
1647 | * |
---|
1648 | * Side effects: |
---|
1649 | * See the user documentation. |
---|
1650 | * |
---|
1651 | *---------------------------------------------------------------------- |
---|
1652 | */ |
---|
1653 | |
---|
1654 | /* ARGSUSED */ |
---|
1655 | int |
---|
1656 | Tcl_JoinObjCmd(dummy, interp, objc, objv) |
---|
1657 | ClientData dummy; /* Not used. */ |
---|
1658 | Tcl_Interp *interp; /* Current interpreter. */ |
---|
1659 | int objc; /* Number of arguments. */ |
---|
1660 | Tcl_Obj *CONST objv[]; /* The argument objects. */ |
---|
1661 | { |
---|
1662 | char *joinString, *bytes; |
---|
1663 | int joinLength, listLen, length, i, result; |
---|
1664 | Tcl_Obj **elemPtrs; |
---|
1665 | Tcl_Obj *resObjPtr; |
---|
1666 | |
---|
1667 | if (objc == 2) { |
---|
1668 | joinString = " "; |
---|
1669 | joinLength = 1; |
---|
1670 | } else if (objc == 3) { |
---|
1671 | joinString = Tcl_GetStringFromObj(objv[2], &joinLength); |
---|
1672 | } else { |
---|
1673 | Tcl_WrongNumArgs(interp, 1, objv, "list ?joinString?"); |
---|
1674 | return TCL_ERROR; |
---|
1675 | } |
---|
1676 | |
---|
1677 | /* |
---|
1678 | * Make sure the list argument is a list object and get its length and |
---|
1679 | * a pointer to its array of element pointers. |
---|
1680 | */ |
---|
1681 | |
---|
1682 | result = Tcl_ListObjGetElements(interp, objv[1], &listLen, &elemPtrs); |
---|
1683 | if (result != TCL_OK) { |
---|
1684 | return result; |
---|
1685 | } |
---|
1686 | |
---|
1687 | /* |
---|
1688 | * Now concatenate strings to form the "joined" result. We append |
---|
1689 | * directly into the interpreter's result object. |
---|
1690 | */ |
---|
1691 | |
---|
1692 | resObjPtr = Tcl_GetObjResult(interp); |
---|
1693 | |
---|
1694 | for (i = 0; i < listLen; i++) { |
---|
1695 | bytes = Tcl_GetStringFromObj(elemPtrs[i], &length); |
---|
1696 | if (i > 0) { |
---|
1697 | Tcl_AppendToObj(resObjPtr, joinString, joinLength); |
---|
1698 | } |
---|
1699 | Tcl_AppendToObj(resObjPtr, bytes, length); |
---|
1700 | } |
---|
1701 | return TCL_OK; |
---|
1702 | } |
---|
1703 | |
---|
1704 | /* |
---|
1705 | *---------------------------------------------------------------------- |
---|
1706 | * |
---|
1707 | * Tcl_LindexObjCmd -- |
---|
1708 | * |
---|
1709 | * This object-based procedure is invoked to process the "lindex" Tcl |
---|
1710 | * command. See the user documentation for details on what it does. |
---|
1711 | * |
---|
1712 | * Results: |
---|
1713 | * A standard Tcl object result. |
---|
1714 | * |
---|
1715 | * Side effects: |
---|
1716 | * See the user documentation. |
---|
1717 | * |
---|
1718 | *---------------------------------------------------------------------- |
---|
1719 | */ |
---|
1720 | |
---|
1721 | /* ARGSUSED */ |
---|
1722 | int |
---|
1723 | Tcl_LindexObjCmd(dummy, interp, objc, objv) |
---|
1724 | ClientData dummy; /* Not used. */ |
---|
1725 | Tcl_Interp *interp; /* Current interpreter. */ |
---|
1726 | int objc; /* Number of arguments. */ |
---|
1727 | Tcl_Obj *CONST objv[]; /* Argument objects. */ |
---|
1728 | { |
---|
1729 | Tcl_Obj *listPtr; |
---|
1730 | Tcl_Obj **elemPtrs; |
---|
1731 | int listLen, index, result; |
---|
1732 | |
---|
1733 | if (objc != 3) { |
---|
1734 | Tcl_WrongNumArgs(interp, 1, objv, "list index"); |
---|
1735 | return TCL_ERROR; |
---|
1736 | } |
---|
1737 | |
---|
1738 | /* |
---|
1739 | * Convert the first argument to a list if necessary. |
---|
1740 | */ |
---|
1741 | |
---|
1742 | listPtr = objv[1]; |
---|
1743 | result = Tcl_ListObjGetElements(interp, listPtr, &listLen, &elemPtrs); |
---|
1744 | if (result != TCL_OK) { |
---|
1745 | return result; |
---|
1746 | } |
---|
1747 | |
---|
1748 | /* |
---|
1749 | * Get the index from objv[2]. |
---|
1750 | */ |
---|
1751 | |
---|
1752 | result = TclGetIntForIndex(interp, objv[2], /*endValue*/ (listLen - 1), |
---|
1753 | &index); |
---|
1754 | if (result != TCL_OK) { |
---|
1755 | return result; |
---|
1756 | } |
---|
1757 | if ((index < 0) || (index >= listLen)) { |
---|
1758 | /* |
---|
1759 | * The index is out of range: the result is an empty string object. |
---|
1760 | */ |
---|
1761 | |
---|
1762 | return TCL_OK; |
---|
1763 | } |
---|
1764 | |
---|
1765 | /* |
---|
1766 | * Make sure listPtr still refers to a list object. It might have been |
---|
1767 | * converted to an int above if the argument objects were shared. |
---|
1768 | */ |
---|
1769 | |
---|
1770 | if (listPtr->typePtr != &tclListType) { |
---|
1771 | result = Tcl_ListObjGetElements(interp, listPtr, &listLen, |
---|
1772 | &elemPtrs); |
---|
1773 | if (result != TCL_OK) { |
---|
1774 | return result; |
---|
1775 | } |
---|
1776 | } |
---|
1777 | |
---|
1778 | /* |
---|
1779 | * Set the interpreter's object result to the index-th list element. |
---|
1780 | */ |
---|
1781 | |
---|
1782 | Tcl_SetObjResult(interp, elemPtrs[index]); |
---|
1783 | return TCL_OK; |
---|
1784 | } |
---|
1785 | |
---|
1786 | /* |
---|
1787 | *---------------------------------------------------------------------- |
---|
1788 | * |
---|
1789 | * Tcl_LinsertObjCmd -- |
---|
1790 | * |
---|
1791 | * This object-based procedure is invoked to process the "linsert" Tcl |
---|
1792 | * command. See the user documentation for details on what it does. |
---|
1793 | * |
---|
1794 | * Results: |
---|
1795 | * A new Tcl list object formed by inserting zero or more elements |
---|
1796 | * into a list. |
---|
1797 | * |
---|
1798 | * Side effects: |
---|
1799 | * See the user documentation. |
---|
1800 | * |
---|
1801 | *---------------------------------------------------------------------- |
---|
1802 | */ |
---|
1803 | |
---|
1804 | /* ARGSUSED */ |
---|
1805 | int |
---|
1806 | Tcl_LinsertObjCmd(dummy, interp, objc, objv) |
---|
1807 | ClientData dummy; /* Not used. */ |
---|
1808 | Tcl_Interp *interp; /* Current interpreter. */ |
---|
1809 | register int objc; /* Number of arguments. */ |
---|
1810 | Tcl_Obj *CONST objv[]; /* Argument objects. */ |
---|
1811 | { |
---|
1812 | Tcl_Obj *listPtr, *resultPtr; |
---|
1813 | Tcl_ObjType *typePtr; |
---|
1814 | int index, isDuplicate, len, result; |
---|
1815 | |
---|
1816 | if (objc < 4) { |
---|
1817 | Tcl_WrongNumArgs(interp, 1, objv, "list index element ?element ...?"); |
---|
1818 | return TCL_ERROR; |
---|
1819 | } |
---|
1820 | |
---|
1821 | /* |
---|
1822 | * Get the index first since, if a conversion to int is needed, it |
---|
1823 | * will invalidate the list's internal representation. |
---|
1824 | */ |
---|
1825 | |
---|
1826 | result = TclGetIntForIndex(interp, objv[2], /*endValue*/ INT_MAX, |
---|
1827 | &index); |
---|
1828 | if (result != TCL_OK) { |
---|
1829 | return result; |
---|
1830 | } |
---|
1831 | |
---|
1832 | /* |
---|
1833 | * If the list object is unshared we can modify it directly. Otherwise |
---|
1834 | * we create a copy to modify: this is "copy on write". We create the |
---|
1835 | * duplicate directly in the interpreter's object result. |
---|
1836 | */ |
---|
1837 | |
---|
1838 | listPtr = objv[1]; |
---|
1839 | isDuplicate = 0; |
---|
1840 | if (Tcl_IsShared(listPtr)) { |
---|
1841 | /* |
---|
1842 | * The following code must reflect the logic in Tcl_DuplicateObj() |
---|
1843 | * except that it must duplicate the list object directly into the |
---|
1844 | * interpreter's result. |
---|
1845 | */ |
---|
1846 | |
---|
1847 | Tcl_ResetResult(interp); |
---|
1848 | resultPtr = Tcl_GetObjResult(interp); |
---|
1849 | typePtr = listPtr->typePtr; |
---|
1850 | if (listPtr->bytes == NULL) { |
---|
1851 | resultPtr->bytes = NULL; |
---|
1852 | } else if (listPtr->bytes != tclEmptyStringRep) { |
---|
1853 | len = listPtr->length; |
---|
1854 | TclInitStringRep(resultPtr, listPtr->bytes, len); |
---|
1855 | } |
---|
1856 | if (typePtr != NULL) { |
---|
1857 | if (typePtr->dupIntRepProc == NULL) { |
---|
1858 | resultPtr->internalRep = listPtr->internalRep; |
---|
1859 | resultPtr->typePtr = typePtr; |
---|
1860 | } else { |
---|
1861 | (*typePtr->dupIntRepProc)(listPtr, resultPtr); |
---|
1862 | } |
---|
1863 | } |
---|
1864 | listPtr = resultPtr; |
---|
1865 | isDuplicate = 1; |
---|
1866 | } |
---|
1867 | |
---|
1868 | if ((objc == 4) && (index == INT_MAX)) { |
---|
1869 | /* |
---|
1870 | * Special case: insert one element at the end of the list. |
---|
1871 | */ |
---|
1872 | |
---|
1873 | result = Tcl_ListObjAppendElement(interp, listPtr, objv[3]); |
---|
1874 | } else if (objc > 3) { |
---|
1875 | result = Tcl_ListObjReplace(interp, listPtr, index, 0, |
---|
1876 | (objc-3), &(objv[3])); |
---|
1877 | } |
---|
1878 | if (result != TCL_OK) { |
---|
1879 | return result; |
---|
1880 | } |
---|
1881 | |
---|
1882 | /* |
---|
1883 | * Set the interpreter's object result. |
---|
1884 | */ |
---|
1885 | |
---|
1886 | if (!isDuplicate) { |
---|
1887 | Tcl_SetObjResult(interp, listPtr); |
---|
1888 | } |
---|
1889 | return TCL_OK; |
---|
1890 | } |
---|
1891 | |
---|
1892 | /* |
---|
1893 | *---------------------------------------------------------------------- |
---|
1894 | * |
---|
1895 | * Tcl_ListObjCmd -- |
---|
1896 | * |
---|
1897 | * This procedure is invoked to process the "list" Tcl command. |
---|
1898 | * See the user documentation for details on what it does. |
---|
1899 | * |
---|
1900 | * Results: |
---|
1901 | * A standard Tcl object result. |
---|
1902 | * |
---|
1903 | * Side effects: |
---|
1904 | * See the user documentation. |
---|
1905 | * |
---|
1906 | *---------------------------------------------------------------------- |
---|
1907 | */ |
---|
1908 | |
---|
1909 | /* ARGSUSED */ |
---|
1910 | int |
---|
1911 | Tcl_ListObjCmd(dummy, interp, objc, objv) |
---|
1912 | ClientData dummy; /* Not used. */ |
---|
1913 | Tcl_Interp *interp; /* Current interpreter. */ |
---|
1914 | register int objc; /* Number of arguments. */ |
---|
1915 | register Tcl_Obj *CONST objv[]; /* The argument objects. */ |
---|
1916 | { |
---|
1917 | /* |
---|
1918 | * If there are no list elements, the result is an empty object. |
---|
1919 | * Otherwise modify the interpreter's result object to be a list object. |
---|
1920 | */ |
---|
1921 | |
---|
1922 | if (objc > 1) { |
---|
1923 | Tcl_SetListObj(Tcl_GetObjResult(interp), (objc-1), &(objv[1])); |
---|
1924 | } |
---|
1925 | return TCL_OK; |
---|
1926 | } |
---|
1927 | |
---|
1928 | /* |
---|
1929 | *---------------------------------------------------------------------- |
---|
1930 | * |
---|
1931 | * Tcl_LlengthObjCmd -- |
---|
1932 | * |
---|
1933 | * This object-based procedure is invoked to process the "llength" Tcl |
---|
1934 | * command. See the user documentation for details on what it does. |
---|
1935 | * |
---|
1936 | * Results: |
---|
1937 | * A standard Tcl object result. |
---|
1938 | * |
---|
1939 | * Side effects: |
---|
1940 | * See the user documentation. |
---|
1941 | * |
---|
1942 | *---------------------------------------------------------------------- |
---|
1943 | */ |
---|
1944 | |
---|
1945 | /* ARGSUSED */ |
---|
1946 | int |
---|
1947 | Tcl_LlengthObjCmd(dummy, interp, objc, objv) |
---|
1948 | ClientData dummy; /* Not used. */ |
---|
1949 | Tcl_Interp *interp; /* Current interpreter. */ |
---|
1950 | int objc; /* Number of arguments. */ |
---|
1951 | register Tcl_Obj *CONST objv[]; /* Argument objects. */ |
---|
1952 | { |
---|
1953 | int listLen, result; |
---|
1954 | |
---|
1955 | if (objc != 2) { |
---|
1956 | Tcl_WrongNumArgs(interp, 1, objv, "list"); |
---|
1957 | return TCL_ERROR; |
---|
1958 | } |
---|
1959 | |
---|
1960 | result = Tcl_ListObjLength(interp, objv[1], &listLen); |
---|
1961 | if (result != TCL_OK) { |
---|
1962 | return result; |
---|
1963 | } |
---|
1964 | |
---|
1965 | /* |
---|
1966 | * Set the interpreter's object result to an integer object holding the |
---|
1967 | * length. |
---|
1968 | */ |
---|
1969 | |
---|
1970 | Tcl_SetIntObj(Tcl_GetObjResult(interp), listLen); |
---|
1971 | return TCL_OK; |
---|
1972 | } |
---|
1973 | |
---|
1974 | /* |
---|
1975 | *---------------------------------------------------------------------- |
---|
1976 | * |
---|
1977 | * Tcl_LrangeObjCmd -- |
---|
1978 | * |
---|
1979 | * This procedure is invoked to process the "lrange" Tcl command. |
---|
1980 | * See the user documentation for details on what it does. |
---|
1981 | * |
---|
1982 | * Results: |
---|
1983 | * A standard Tcl object result. |
---|
1984 | * |
---|
1985 | * Side effects: |
---|
1986 | * See the user documentation. |
---|
1987 | * |
---|
1988 | *---------------------------------------------------------------------- |
---|
1989 | */ |
---|
1990 | |
---|
1991 | /* ARGSUSED */ |
---|
1992 | int |
---|
1993 | Tcl_LrangeObjCmd(notUsed, interp, objc, objv) |
---|
1994 | ClientData notUsed; /* Not used. */ |
---|
1995 | Tcl_Interp *interp; /* Current interpreter. */ |
---|
1996 | int objc; /* Number of arguments. */ |
---|
1997 | register Tcl_Obj *CONST objv[]; /* Argument objects. */ |
---|
1998 | { |
---|
1999 | Tcl_Obj *listPtr; |
---|
2000 | Tcl_Obj **elemPtrs; |
---|
2001 | int listLen, first, last, numElems, result; |
---|
2002 | |
---|
2003 | if (objc != 4) { |
---|
2004 | Tcl_WrongNumArgs(interp, 1, objv, "list first last"); |
---|
2005 | return TCL_ERROR; |
---|
2006 | } |
---|
2007 | |
---|
2008 | /* |
---|
2009 | * Make sure the list argument is a list object and get its length and |
---|
2010 | * a pointer to its array of element pointers. |
---|
2011 | */ |
---|
2012 | |
---|
2013 | listPtr = objv[1]; |
---|
2014 | result = Tcl_ListObjGetElements(interp, listPtr, &listLen, &elemPtrs); |
---|
2015 | if (result != TCL_OK) { |
---|
2016 | return result; |
---|
2017 | } |
---|
2018 | |
---|
2019 | /* |
---|
2020 | * Get the first and last indexes. |
---|
2021 | */ |
---|
2022 | |
---|
2023 | result = TclGetIntForIndex(interp, objv[2], /*endValue*/ (listLen - 1), |
---|
2024 | &first); |
---|
2025 | if (result != TCL_OK) { |
---|
2026 | return result; |
---|
2027 | } |
---|
2028 | if (first < 0) { |
---|
2029 | first = 0; |
---|
2030 | } |
---|
2031 | |
---|
2032 | result = TclGetIntForIndex(interp, objv[3], /*endValue*/ (listLen - 1), |
---|
2033 | &last); |
---|
2034 | if (result != TCL_OK) { |
---|
2035 | return result; |
---|
2036 | } |
---|
2037 | if (last >= listLen) { |
---|
2038 | last = (listLen - 1); |
---|
2039 | } |
---|
2040 | |
---|
2041 | if (first > last) { |
---|
2042 | return TCL_OK; /* the result is an empty object */ |
---|
2043 | } |
---|
2044 | |
---|
2045 | /* |
---|
2046 | * Make sure listPtr still refers to a list object. It might have been |
---|
2047 | * converted to an int above if the argument objects were shared. |
---|
2048 | */ |
---|
2049 | |
---|
2050 | if (listPtr->typePtr != &tclListType) { |
---|
2051 | result = Tcl_ListObjGetElements(interp, listPtr, &listLen, |
---|
2052 | &elemPtrs); |
---|
2053 | if (result != TCL_OK) { |
---|
2054 | return result; |
---|
2055 | } |
---|
2056 | } |
---|
2057 | |
---|
2058 | /* |
---|
2059 | * Extract a range of fields. We modify the interpreter's result object |
---|
2060 | * to be a list object containing the specified elements. |
---|
2061 | */ |
---|
2062 | |
---|
2063 | numElems = (last - first + 1); |
---|
2064 | Tcl_SetListObj(Tcl_GetObjResult(interp), numElems, &(elemPtrs[first])); |
---|
2065 | return TCL_OK; |
---|
2066 | } |
---|
2067 | |
---|
2068 | /* |
---|
2069 | *---------------------------------------------------------------------- |
---|
2070 | * |
---|
2071 | * Tcl_LreplaceObjCmd -- |
---|
2072 | * |
---|
2073 | * This object-based procedure is invoked to process the "lreplace" |
---|
2074 | * Tcl command. See the user documentation for details on what it does. |
---|
2075 | * |
---|
2076 | * Results: |
---|
2077 | * A new Tcl list object formed by replacing zero or more elements of |
---|
2078 | * a list. |
---|
2079 | * |
---|
2080 | * Side effects: |
---|
2081 | * See the user documentation. |
---|
2082 | * |
---|
2083 | *---------------------------------------------------------------------- |
---|
2084 | */ |
---|
2085 | |
---|
2086 | /* ARGSUSED */ |
---|
2087 | int |
---|
2088 | Tcl_LreplaceObjCmd(dummy, interp, objc, objv) |
---|
2089 | ClientData dummy; /* Not used. */ |
---|
2090 | Tcl_Interp *interp; /* Current interpreter. */ |
---|
2091 | int objc; /* Number of arguments. */ |
---|
2092 | Tcl_Obj *CONST objv[]; /* Argument objects. */ |
---|
2093 | { |
---|
2094 | register Tcl_Obj *listPtr; |
---|
2095 | int createdNewObj, first, last, listLen, numToDelete; |
---|
2096 | int firstArgLen, result; |
---|
2097 | char *firstArg; |
---|
2098 | |
---|
2099 | if (objc < 4) { |
---|
2100 | Tcl_WrongNumArgs(interp, 1, objv, |
---|
2101 | "list first last ?element element ...?"); |
---|
2102 | return TCL_ERROR; |
---|
2103 | } |
---|
2104 | |
---|
2105 | /* |
---|
2106 | * If the list object is unshared we can modify it directly, otherwise |
---|
2107 | * we create a copy to modify: this is "copy on write". |
---|
2108 | */ |
---|
2109 | |
---|
2110 | listPtr = objv[1]; |
---|
2111 | createdNewObj = 0; |
---|
2112 | if (Tcl_IsShared(listPtr)) { |
---|
2113 | listPtr = Tcl_DuplicateObj(listPtr); |
---|
2114 | createdNewObj = 1; |
---|
2115 | } |
---|
2116 | result = Tcl_ListObjLength(interp, listPtr, &listLen); |
---|
2117 | if (result != TCL_OK) { |
---|
2118 | errorReturn: |
---|
2119 | if (createdNewObj) { |
---|
2120 | Tcl_DecrRefCount(listPtr); /* free unneeded obj */ |
---|
2121 | } |
---|
2122 | return result; |
---|
2123 | } |
---|
2124 | |
---|
2125 | /* |
---|
2126 | * Get the first and last indexes. |
---|
2127 | */ |
---|
2128 | |
---|
2129 | result = TclGetIntForIndex(interp, objv[2], /*endValue*/ (listLen - 1), |
---|
2130 | &first); |
---|
2131 | if (result != TCL_OK) { |
---|
2132 | goto errorReturn; |
---|
2133 | } |
---|
2134 | firstArg = Tcl_GetStringFromObj(objv[2], &firstArgLen); |
---|
2135 | |
---|
2136 | result = TclGetIntForIndex(interp, objv[3], /*endValue*/ (listLen - 1), |
---|
2137 | &last); |
---|
2138 | if (result != TCL_OK) { |
---|
2139 | goto errorReturn; |
---|
2140 | } |
---|
2141 | |
---|
2142 | if (first < 0) { |
---|
2143 | first = 0; |
---|
2144 | } |
---|
2145 | if ((first >= listLen) && (listLen > 0) |
---|
2146 | && (strncmp(firstArg, "end", (unsigned) firstArgLen) != 0)) { |
---|
2147 | Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
---|
2148 | "list doesn't contain element ", |
---|
2149 | Tcl_GetStringFromObj(objv[2], (int *) NULL), (int *) NULL); |
---|
2150 | result = TCL_ERROR; |
---|
2151 | goto errorReturn; |
---|
2152 | } |
---|
2153 | if (last >= listLen) { |
---|
2154 | last = (listLen - 1); |
---|
2155 | } |
---|
2156 | if (first <= last) { |
---|
2157 | numToDelete = (last - first + 1); |
---|
2158 | } else { |
---|
2159 | numToDelete = 0; |
---|
2160 | } |
---|
2161 | |
---|
2162 | if (objc > 4) { |
---|
2163 | result = Tcl_ListObjReplace(interp, listPtr, first, numToDelete, |
---|
2164 | (objc-4), &(objv[4])); |
---|
2165 | } else { |
---|
2166 | result = Tcl_ListObjReplace(interp, listPtr, first, numToDelete, |
---|
2167 | 0, NULL); |
---|
2168 | } |
---|
2169 | if (result != TCL_OK) { |
---|
2170 | goto errorReturn; |
---|
2171 | } |
---|
2172 | |
---|
2173 | /* |
---|
2174 | * Set the interpreter's object result. |
---|
2175 | */ |
---|
2176 | |
---|
2177 | Tcl_SetObjResult(interp, listPtr); |
---|
2178 | return TCL_OK; |
---|
2179 | } |
---|
2180 | |
---|
2181 | /* |
---|
2182 | *---------------------------------------------------------------------- |
---|
2183 | * |
---|
2184 | * Tcl_LsortObjCmd -- |
---|
2185 | * |
---|
2186 | * This procedure is invoked to process the "lsort" Tcl command. |
---|
2187 | * See the user documentation for details on what it does. |
---|
2188 | * |
---|
2189 | * Results: |
---|
2190 | * A standard Tcl result. |
---|
2191 | * |
---|
2192 | * Side effects: |
---|
2193 | * See the user documentation. |
---|
2194 | * |
---|
2195 | *---------------------------------------------------------------------- |
---|
2196 | */ |
---|
2197 | |
---|
2198 | int |
---|
2199 | Tcl_LsortObjCmd(clientData, interp, objc, objv) |
---|
2200 | ClientData clientData; /* Not used. */ |
---|
2201 | Tcl_Interp *interp; /* Current interpreter. */ |
---|
2202 | int objc; /* Number of arguments. */ |
---|
2203 | Tcl_Obj *CONST objv[]; /* Argument values. */ |
---|
2204 | { |
---|
2205 | int i, index, dummy; |
---|
2206 | Tcl_Obj *resultPtr; |
---|
2207 | int length; |
---|
2208 | Tcl_Obj *cmdPtr, **listObjPtrs; |
---|
2209 | SortElement *elementArray; |
---|
2210 | SortElement *elementPtr; |
---|
2211 | SortInfo sortInfo; /* Information about this sort that |
---|
2212 | * needs to be passed to the |
---|
2213 | * comparison function */ |
---|
2214 | static char *switches[] = |
---|
2215 | {"-ascii", "-command", "-decreasing", "-dictionary", |
---|
2216 | "-increasing", "-index", "-integer", "-real", (char *) NULL}; |
---|
2217 | |
---|
2218 | resultPtr = Tcl_GetObjResult(interp); |
---|
2219 | if (objc < 2) { |
---|
2220 | Tcl_WrongNumArgs(interp, 1, objv, "?options? list"); |
---|
2221 | return TCL_ERROR; |
---|
2222 | } |
---|
2223 | |
---|
2224 | /* |
---|
2225 | * Parse arguments to set up the mode for the sort. |
---|
2226 | */ |
---|
2227 | |
---|
2228 | sortInfo.isIncreasing = 1; |
---|
2229 | sortInfo.sortMode = SORTMODE_ASCII; |
---|
2230 | sortInfo.index = -1; |
---|
2231 | sortInfo.interp = interp; |
---|
2232 | sortInfo.resultCode = TCL_OK; |
---|
2233 | cmdPtr = NULL; |
---|
2234 | for (i = 1; i < objc-1; i++) { |
---|
2235 | if (Tcl_GetIndexFromObj(interp, objv[i], switches, "option", 0, &index) |
---|
2236 | != TCL_OK) { |
---|
2237 | return TCL_ERROR; |
---|
2238 | } |
---|
2239 | switch (index) { |
---|
2240 | case 0: /* -ascii */ |
---|
2241 | sortInfo.sortMode = SORTMODE_ASCII; |
---|
2242 | break; |
---|
2243 | case 1: /* -command */ |
---|
2244 | if (i == (objc-2)) { |
---|
2245 | Tcl_AppendToObj(resultPtr, |
---|
2246 | "\"-command\" option must be followed by comparison command", |
---|
2247 | -1); |
---|
2248 | return TCL_ERROR; |
---|
2249 | } |
---|
2250 | sortInfo.sortMode = SORTMODE_COMMAND; |
---|
2251 | cmdPtr = objv[i+1]; |
---|
2252 | i++; |
---|
2253 | break; |
---|
2254 | case 2: /* -decreasing */ |
---|
2255 | sortInfo.isIncreasing = 0; |
---|
2256 | break; |
---|
2257 | case 3: /* -dictionary */ |
---|
2258 | sortInfo.sortMode = SORTMODE_DICTIONARY; |
---|
2259 | break; |
---|
2260 | case 4: /* -increasing */ |
---|
2261 | sortInfo.isIncreasing = 1; |
---|
2262 | break; |
---|
2263 | case 5: /* -index */ |
---|
2264 | if (i == (objc-2)) { |
---|
2265 | Tcl_AppendToObj(resultPtr, |
---|
2266 | "\"-index\" option must be followed by list index", |
---|
2267 | -1); |
---|
2268 | return TCL_ERROR; |
---|
2269 | } |
---|
2270 | if (TclGetIntForIndex(interp, objv[i+1], -2, &sortInfo.index) |
---|
2271 | != TCL_OK) { |
---|
2272 | return TCL_ERROR; |
---|
2273 | } |
---|
2274 | cmdPtr = objv[i+1]; |
---|
2275 | i++; |
---|
2276 | break; |
---|
2277 | case 6: /* -integer */ |
---|
2278 | sortInfo.sortMode = SORTMODE_INTEGER; |
---|
2279 | break; |
---|
2280 | case 7: /* -real */ |
---|
2281 | sortInfo.sortMode = SORTMODE_REAL; |
---|
2282 | break; |
---|
2283 | } |
---|
2284 | } |
---|
2285 | if (sortInfo.sortMode == SORTMODE_COMMAND) { |
---|
2286 | Tcl_DStringInit(&sortInfo.compareCmd); |
---|
2287 | Tcl_DStringAppend(&sortInfo.compareCmd, |
---|
2288 | Tcl_GetStringFromObj(cmdPtr, &dummy), -1); |
---|
2289 | } |
---|
2290 | |
---|
2291 | sortInfo.resultCode = Tcl_ListObjGetElements(interp, objv[objc-1], |
---|
2292 | &length, &listObjPtrs); |
---|
2293 | if (sortInfo.resultCode != TCL_OK) { |
---|
2294 | goto done; |
---|
2295 | } |
---|
2296 | if (length <= 0) { |
---|
2297 | return TCL_OK; |
---|
2298 | } |
---|
2299 | elementArray = (SortElement *) ckalloc(length * sizeof(SortElement)); |
---|
2300 | for (i=0; i < length; i++){ |
---|
2301 | elementArray[i].objPtr = listObjPtrs[i]; |
---|
2302 | elementArray[i].nextPtr = &elementArray[i+1]; |
---|
2303 | } |
---|
2304 | elementArray[length-1].nextPtr = NULL; |
---|
2305 | elementPtr = MergeSort(elementArray, &sortInfo); |
---|
2306 | if (sortInfo.resultCode == TCL_OK) { |
---|
2307 | /* |
---|
2308 | * Note: must clear the interpreter's result object: it could |
---|
2309 | * have been set by the -command script. |
---|
2310 | */ |
---|
2311 | |
---|
2312 | Tcl_ResetResult(interp); |
---|
2313 | resultPtr = Tcl_GetObjResult(interp); |
---|
2314 | for (; elementPtr != NULL; elementPtr = elementPtr->nextPtr){ |
---|
2315 | Tcl_ListObjAppendElement(interp, resultPtr, elementPtr->objPtr); |
---|
2316 | } |
---|
2317 | } |
---|
2318 | ckfree((char*) elementArray); |
---|
2319 | |
---|
2320 | done: |
---|
2321 | if (sortInfo.sortMode == SORTMODE_COMMAND) { |
---|
2322 | Tcl_DStringFree(&sortInfo.compareCmd); |
---|
2323 | } |
---|
2324 | return sortInfo.resultCode; |
---|
2325 | } |
---|
2326 | |
---|
2327 | /* |
---|
2328 | *---------------------------------------------------------------------- |
---|
2329 | * |
---|
2330 | * MergeSort - |
---|
2331 | * |
---|
2332 | * This procedure sorts a linked list of SortElement structures |
---|
2333 | * use the merge-sort algorithm. |
---|
2334 | * |
---|
2335 | * Results: |
---|
2336 | * A pointer to the head of the list after sorting is returned. |
---|
2337 | * |
---|
2338 | * Side effects: |
---|
2339 | * None, unless a user-defined comparison command does something |
---|
2340 | * weird. |
---|
2341 | * |
---|
2342 | *---------------------------------------------------------------------- |
---|
2343 | */ |
---|
2344 | |
---|
2345 | static SortElement * |
---|
2346 | MergeSort(headPtr, infoPtr) |
---|
2347 | SortElement *headPtr; /* First element on the list */ |
---|
2348 | SortInfo *infoPtr; /* Information needed by the |
---|
2349 | * comparison operator */ |
---|
2350 | { |
---|
2351 | /* |
---|
2352 | * The subList array below holds pointers to temporary lists built |
---|
2353 | * during the merge sort. Element i of the array holds a list of |
---|
2354 | * length 2**i. |
---|
2355 | */ |
---|
2356 | |
---|
2357 | # define NUM_LISTS 30 |
---|
2358 | SortElement *subList[NUM_LISTS]; |
---|
2359 | SortElement *elementPtr; |
---|
2360 | int i; |
---|
2361 | |
---|
2362 | for(i = 0; i < NUM_LISTS; i++){ |
---|
2363 | subList[i] = NULL; |
---|
2364 | } |
---|
2365 | while (headPtr != NULL) { |
---|
2366 | elementPtr = headPtr; |
---|
2367 | headPtr = headPtr->nextPtr; |
---|
2368 | elementPtr->nextPtr = 0; |
---|
2369 | for (i = 0; (i < NUM_LISTS) && (subList[i] != NULL); i++){ |
---|
2370 | elementPtr = MergeLists(subList[i], elementPtr, infoPtr); |
---|
2371 | subList[i] = NULL; |
---|
2372 | } |
---|
2373 | if (i >= NUM_LISTS) { |
---|
2374 | i = NUM_LISTS-1; |
---|
2375 | } |
---|
2376 | subList[i] = elementPtr; |
---|
2377 | } |
---|
2378 | elementPtr = NULL; |
---|
2379 | for (i = 0; i < NUM_LISTS; i++){ |
---|
2380 | elementPtr = MergeLists(subList[i], elementPtr, infoPtr); |
---|
2381 | } |
---|
2382 | return elementPtr; |
---|
2383 | } |
---|
2384 | |
---|
2385 | /* |
---|
2386 | *---------------------------------------------------------------------- |
---|
2387 | * |
---|
2388 | * MergeLists - |
---|
2389 | * |
---|
2390 | * This procedure combines two sorted lists of SortElement structures |
---|
2391 | * into a single sorted list. |
---|
2392 | * |
---|
2393 | * Results: |
---|
2394 | * The unified list of SortElement structures. |
---|
2395 | * |
---|
2396 | * Side effects: |
---|
2397 | * None, unless a user-defined comparison command does something |
---|
2398 | * weird. |
---|
2399 | * |
---|
2400 | *---------------------------------------------------------------------- |
---|
2401 | */ |
---|
2402 | |
---|
2403 | static SortElement * |
---|
2404 | MergeLists(leftPtr, rightPtr, infoPtr) |
---|
2405 | SortElement *leftPtr; /* First list to be merged; may be |
---|
2406 | * NULL. */ |
---|
2407 | SortElement *rightPtr; /* Second list to be merged; may be |
---|
2408 | * NULL. */ |
---|
2409 | SortInfo *infoPtr; /* Information needed by the |
---|
2410 | * comparison operator. */ |
---|
2411 | { |
---|
2412 | SortElement *headPtr; |
---|
2413 | SortElement *tailPtr; |
---|
2414 | |
---|
2415 | if (leftPtr == NULL) { |
---|
2416 | return rightPtr; |
---|
2417 | } |
---|
2418 | if (rightPtr == NULL) { |
---|
2419 | return leftPtr; |
---|
2420 | } |
---|
2421 | if (SortCompare(leftPtr->objPtr, rightPtr->objPtr, infoPtr) > 0) { |
---|
2422 | tailPtr = rightPtr; |
---|
2423 | rightPtr = rightPtr->nextPtr; |
---|
2424 | } else { |
---|
2425 | tailPtr = leftPtr; |
---|
2426 | leftPtr = leftPtr->nextPtr; |
---|
2427 | } |
---|
2428 | headPtr = tailPtr; |
---|
2429 | while ((leftPtr != NULL) && (rightPtr != NULL)) { |
---|
2430 | if (SortCompare(leftPtr->objPtr, rightPtr->objPtr, infoPtr) > 0) { |
---|
2431 | tailPtr->nextPtr = rightPtr; |
---|
2432 | tailPtr = rightPtr; |
---|
2433 | rightPtr = rightPtr->nextPtr; |
---|
2434 | } else { |
---|
2435 | tailPtr->nextPtr = leftPtr; |
---|
2436 | tailPtr = leftPtr; |
---|
2437 | leftPtr = leftPtr->nextPtr; |
---|
2438 | } |
---|
2439 | } |
---|
2440 | if (leftPtr != NULL) { |
---|
2441 | tailPtr->nextPtr = leftPtr; |
---|
2442 | } else { |
---|
2443 | tailPtr->nextPtr = rightPtr; |
---|
2444 | } |
---|
2445 | return headPtr; |
---|
2446 | } |
---|
2447 | |
---|
2448 | /* |
---|
2449 | *---------------------------------------------------------------------- |
---|
2450 | * |
---|
2451 | * SortCompare -- |
---|
2452 | * |
---|
2453 | * This procedure is invoked by MergeLists to determine the proper |
---|
2454 | * ordering between two elements. |
---|
2455 | * |
---|
2456 | * Results: |
---|
2457 | * A negative results means the the first element comes before the |
---|
2458 | * second, and a positive results means that the second element |
---|
2459 | * should come first. A result of zero means the two elements |
---|
2460 | * are equal and it doesn't matter which comes first. |
---|
2461 | * |
---|
2462 | * Side effects: |
---|
2463 | * None, unless a user-defined comparison command does something |
---|
2464 | * weird. |
---|
2465 | * |
---|
2466 | *---------------------------------------------------------------------- |
---|
2467 | */ |
---|
2468 | |
---|
2469 | static int |
---|
2470 | SortCompare(objPtr1, objPtr2, infoPtr) |
---|
2471 | Tcl_Obj *objPtr1, *objPtr2; /* Values to be compared. */ |
---|
2472 | SortInfo *infoPtr; /* Information passed from the |
---|
2473 | * top-level "lsort" command */ |
---|
2474 | { |
---|
2475 | int order, dummy, listLen, index; |
---|
2476 | Tcl_Obj *objPtr; |
---|
2477 | char buffer[30]; |
---|
2478 | |
---|
2479 | order = 0; |
---|
2480 | if (infoPtr->resultCode != TCL_OK) { |
---|
2481 | /* |
---|
2482 | * Once an error has occurred, skip any future comparisons |
---|
2483 | * so as to preserve the error message in sortInterp->result. |
---|
2484 | */ |
---|
2485 | |
---|
2486 | return order; |
---|
2487 | } |
---|
2488 | if (infoPtr->index != -1) { |
---|
2489 | /* |
---|
2490 | * The "-index" option was specified. Treat each object as a |
---|
2491 | * list, extract the requested element from each list, and |
---|
2492 | * compare the elements, not the lists. The special index "end" |
---|
2493 | * is signaled here with a large negative index. |
---|
2494 | */ |
---|
2495 | |
---|
2496 | if (Tcl_ListObjLength(infoPtr->interp, objPtr1, &listLen) != TCL_OK) { |
---|
2497 | infoPtr->resultCode = TCL_ERROR; |
---|
2498 | return order; |
---|
2499 | } |
---|
2500 | if (infoPtr->index < -1) { |
---|
2501 | index = listLen - 1; |
---|
2502 | } else { |
---|
2503 | index = infoPtr->index; |
---|
2504 | } |
---|
2505 | |
---|
2506 | if (Tcl_ListObjIndex(infoPtr->interp, objPtr1, index, &objPtr) |
---|
2507 | != TCL_OK) { |
---|
2508 | infoPtr->resultCode = TCL_ERROR; |
---|
2509 | return order; |
---|
2510 | } |
---|
2511 | if (objPtr == NULL) { |
---|
2512 | objPtr = objPtr1; |
---|
2513 | missingElement: |
---|
2514 | sprintf(buffer, "%d", infoPtr->index); |
---|
2515 | Tcl_AppendStringsToObj(Tcl_GetObjResult(infoPtr->interp), |
---|
2516 | "element ", buffer, " missing from sublist \"", |
---|
2517 | Tcl_GetStringFromObj(objPtr, (int *) NULL), |
---|
2518 | "\"", (char *) NULL); |
---|
2519 | infoPtr->resultCode = TCL_ERROR; |
---|
2520 | return order; |
---|
2521 | } |
---|
2522 | objPtr1 = objPtr; |
---|
2523 | |
---|
2524 | if (Tcl_ListObjLength(infoPtr->interp, objPtr2, &listLen) != TCL_OK) { |
---|
2525 | infoPtr->resultCode = TCL_ERROR; |
---|
2526 | return order; |
---|
2527 | } |
---|
2528 | if (infoPtr->index < -1) { |
---|
2529 | index = listLen - 1; |
---|
2530 | } else { |
---|
2531 | index = infoPtr->index; |
---|
2532 | } |
---|
2533 | |
---|
2534 | if (Tcl_ListObjIndex(infoPtr->interp, objPtr2, index, &objPtr) |
---|
2535 | != TCL_OK) { |
---|
2536 | infoPtr->resultCode = TCL_ERROR; |
---|
2537 | return order; |
---|
2538 | } |
---|
2539 | if (objPtr == NULL) { |
---|
2540 | objPtr = objPtr2; |
---|
2541 | goto missingElement; |
---|
2542 | } |
---|
2543 | objPtr2 = objPtr; |
---|
2544 | } |
---|
2545 | if (infoPtr->sortMode == SORTMODE_ASCII) { |
---|
2546 | order = strcmp(Tcl_GetStringFromObj(objPtr1, &dummy), |
---|
2547 | Tcl_GetStringFromObj(objPtr2, &dummy)); |
---|
2548 | } else if (infoPtr->sortMode == SORTMODE_DICTIONARY) { |
---|
2549 | order = DictionaryCompare( |
---|
2550 | Tcl_GetStringFromObj(objPtr1, &dummy), |
---|
2551 | Tcl_GetStringFromObj(objPtr2, &dummy)); |
---|
2552 | } else if (infoPtr->sortMode == SORTMODE_INTEGER) { |
---|
2553 | int a, b; |
---|
2554 | |
---|
2555 | if ((Tcl_GetIntFromObj(infoPtr->interp, objPtr1, &a) != TCL_OK) |
---|
2556 | || (Tcl_GetIntFromObj(infoPtr->interp, objPtr2, &b) |
---|
2557 | != TCL_OK)) { |
---|
2558 | infoPtr->resultCode = TCL_ERROR; |
---|
2559 | return order; |
---|
2560 | } |
---|
2561 | if (a > b) { |
---|
2562 | order = 1; |
---|
2563 | } else if (b > a) { |
---|
2564 | order = -1; |
---|
2565 | } |
---|
2566 | } else if (infoPtr->sortMode == SORTMODE_REAL) { |
---|
2567 | double a, b; |
---|
2568 | |
---|
2569 | if ((Tcl_GetDoubleFromObj(infoPtr->interp, objPtr1, &a) != TCL_OK) |
---|
2570 | || (Tcl_GetDoubleFromObj(infoPtr->interp, objPtr2, &b) |
---|
2571 | != TCL_OK)) { |
---|
2572 | infoPtr->resultCode = TCL_ERROR; |
---|
2573 | return order; |
---|
2574 | } |
---|
2575 | if (a > b) { |
---|
2576 | order = 1; |
---|
2577 | } else if (b > a) { |
---|
2578 | order = -1; |
---|
2579 | } |
---|
2580 | } else { |
---|
2581 | int oldLength; |
---|
2582 | |
---|
2583 | /* |
---|
2584 | * Generate and evaluate a command to determine which string comes |
---|
2585 | * first. |
---|
2586 | */ |
---|
2587 | |
---|
2588 | oldLength = Tcl_DStringLength(&infoPtr->compareCmd); |
---|
2589 | Tcl_DStringAppendElement(&infoPtr->compareCmd, |
---|
2590 | Tcl_GetStringFromObj(objPtr1, &dummy)); |
---|
2591 | Tcl_DStringAppendElement(&infoPtr->compareCmd, |
---|
2592 | Tcl_GetStringFromObj(objPtr2, &dummy)); |
---|
2593 | infoPtr->resultCode = Tcl_Eval(infoPtr->interp, |
---|
2594 | Tcl_DStringValue(&infoPtr->compareCmd)); |
---|
2595 | Tcl_DStringTrunc(&infoPtr->compareCmd, oldLength); |
---|
2596 | if (infoPtr->resultCode != TCL_OK) { |
---|
2597 | Tcl_AddErrorInfo(infoPtr->interp, |
---|
2598 | "\n (-compare command)"); |
---|
2599 | return order; |
---|
2600 | } |
---|
2601 | |
---|
2602 | /* |
---|
2603 | * Parse the result of the command. |
---|
2604 | */ |
---|
2605 | |
---|
2606 | if (Tcl_GetIntFromObj(infoPtr->interp, |
---|
2607 | Tcl_GetObjResult(infoPtr->interp), &order) != TCL_OK) { |
---|
2608 | Tcl_ResetResult(infoPtr->interp); |
---|
2609 | Tcl_AppendToObj(Tcl_GetObjResult(infoPtr->interp), |
---|
2610 | "-compare command returned non-numeric result", -1); |
---|
2611 | infoPtr->resultCode = TCL_ERROR; |
---|
2612 | return order; |
---|
2613 | } |
---|
2614 | } |
---|
2615 | if (!infoPtr->isIncreasing) { |
---|
2616 | order = -order; |
---|
2617 | } |
---|
2618 | return order; |
---|
2619 | } |
---|
2620 | |
---|
2621 | /* |
---|
2622 | *---------------------------------------------------------------------- |
---|
2623 | * |
---|
2624 | * DictionaryCompare |
---|
2625 | * |
---|
2626 | * This function compares two strings as if they were being used in |
---|
2627 | * an index or card catalog. The case of alphabetic characters is |
---|
2628 | * ignored, except to break ties. Thus "B" comes before "b" but |
---|
2629 | * after "a". Also, integers embedded in the strings compare in |
---|
2630 | * numerical order. In other words, "x10y" comes after "x9y", not |
---|
2631 | * before it as it would when using strcmp(). |
---|
2632 | * |
---|
2633 | * Results: |
---|
2634 | * A negative result means that the first element comes before the |
---|
2635 | * second, and a positive result means that the second element |
---|
2636 | * should come first. A result of zero means the two elements |
---|
2637 | * are equal and it doesn't matter which comes first. |
---|
2638 | * |
---|
2639 | * Side effects: |
---|
2640 | * None. |
---|
2641 | * |
---|
2642 | *---------------------------------------------------------------------- |
---|
2643 | */ |
---|
2644 | |
---|
2645 | static int |
---|
2646 | DictionaryCompare(left, right) |
---|
2647 | char *left, *right; /* The strings to compare */ |
---|
2648 | { |
---|
2649 | int diff, zeros; |
---|
2650 | int secondaryDiff = 0; |
---|
2651 | |
---|
2652 | while (1) { |
---|
2653 | if (isdigit(UCHAR(*right)) && isdigit(UCHAR(*left))) { |
---|
2654 | /* |
---|
2655 | * There are decimal numbers embedded in the two |
---|
2656 | * strings. Compare them as numbers, rather than |
---|
2657 | * strings. If one number has more leading zeros than |
---|
2658 | * the other, the number with more leading zeros sorts |
---|
2659 | * later, but only as a secondary choice. |
---|
2660 | */ |
---|
2661 | |
---|
2662 | zeros = 0; |
---|
2663 | while ((*right == '0') && (isdigit(UCHAR(right[1])))) { |
---|
2664 | right++; |
---|
2665 | zeros--; |
---|
2666 | } |
---|
2667 | while ((*left == '0') && (isdigit(UCHAR(left[1])))) { |
---|
2668 | left++; |
---|
2669 | zeros++; |
---|
2670 | } |
---|
2671 | if (secondaryDiff == 0) { |
---|
2672 | secondaryDiff = zeros; |
---|
2673 | } |
---|
2674 | |
---|
2675 | /* |
---|
2676 | * The code below compares the numbers in the two |
---|
2677 | * strings without ever converting them to integers. It |
---|
2678 | * does this by first comparing the lengths of the |
---|
2679 | * numbers and then comparing the digit values. |
---|
2680 | */ |
---|
2681 | |
---|
2682 | diff = 0; |
---|
2683 | while (1) { |
---|
2684 | if (diff == 0) { |
---|
2685 | diff = UCHAR(*left) - UCHAR(*right); |
---|
2686 | } |
---|
2687 | right++; |
---|
2688 | left++; |
---|
2689 | if (!isdigit(UCHAR(*right))) { |
---|
2690 | if (isdigit(UCHAR(*left))) { |
---|
2691 | return 1; |
---|
2692 | } else { |
---|
2693 | /* |
---|
2694 | * The two numbers have the same length. See |
---|
2695 | * if their values are different. |
---|
2696 | */ |
---|
2697 | |
---|
2698 | if (diff != 0) { |
---|
2699 | return diff; |
---|
2700 | } |
---|
2701 | break; |
---|
2702 | } |
---|
2703 | } else if (!isdigit(UCHAR(*left))) { |
---|
2704 | return -1; |
---|
2705 | } |
---|
2706 | } |
---|
2707 | continue; |
---|
2708 | } |
---|
2709 | diff = UCHAR(*left) - UCHAR(*right); |
---|
2710 | if (diff) { |
---|
2711 | if (isupper(UCHAR(*left)) && islower(UCHAR(*right))) { |
---|
2712 | diff = UCHAR(tolower(*left)) - UCHAR(*right); |
---|
2713 | if (diff) { |
---|
2714 | return diff; |
---|
2715 | } else if (secondaryDiff == 0) { |
---|
2716 | secondaryDiff = -1; |
---|
2717 | } |
---|
2718 | } else if (isupper(UCHAR(*right)) && islower(UCHAR(*left))) { |
---|
2719 | diff = UCHAR(*left) - UCHAR(tolower(UCHAR(*right))); |
---|
2720 | if (diff) { |
---|
2721 | return diff; |
---|
2722 | } else if (secondaryDiff == 0) { |
---|
2723 | secondaryDiff = 1; |
---|
2724 | } |
---|
2725 | } else { |
---|
2726 | return diff; |
---|
2727 | } |
---|
2728 | } |
---|
2729 | if (*left == 0) { |
---|
2730 | break; |
---|
2731 | } |
---|
2732 | left++; |
---|
2733 | right++; |
---|
2734 | } |
---|
2735 | if (diff == 0) { |
---|
2736 | diff = secondaryDiff; |
---|
2737 | } |
---|
2738 | return diff; |
---|
2739 | } |
---|