Mercurial > hg > early-roguelike
annotate urogue/dictutil.c @ 308:13b482bd9e66
Fix a few more miscellaneous compiler warnings.
author | John "Elwin" Edwards |
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date | Sat, 01 May 2021 09:51:30 -0400 |
parents | c4b12d2d1dcd |
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rev | line source |
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1 /* |
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2 dictutil.c |
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3 |
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4 UltraRogue: The Ultimate Adventure in the Dungeons of Doom |
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5 Copyright (C) 1995 Herb Chong |
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6 All rights reserved. |
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7 |
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8 See the file LICENSE.TXT for full copyright and licensing information. |
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9 */ |
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10 |
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11 /************************************************************************* |
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12 ** Utilities for Dictionary Maintenence Functions |
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13 *************************************************************************/ |
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14 |
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15 #include <stdio.h> |
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16 #include <string.h> |
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17 #include <stdlib.h> |
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18 #if !defined(OS2) && !defined(_WIN32) |
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19 #include <unistd.h> |
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20 #else |
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21 #include <io.h> |
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22 #include <fcntl.h> |
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23 #endif |
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24 |
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25 #include "dict.h" |
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26 #include "dictutil.h" |
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27 #include "rogue.h" |
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28 |
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29 int dict_trace; |
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30 FILE *ft; |
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31 |
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32 |
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33 /*********** |
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34 ** Read 'count' characters into 'buffer' at 'offset' in a binary file |
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35 ** Return 0 on success; -1 on failure; |
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36 ***********/ |
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37 |
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38 int block_read( FILE *fi , char *buffer , size_t count , long offset ) |
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39 { |
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40 if ( fseek(fi,offset,SEEK_SET) == -1 ) |
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41 return( -1 ); |
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42 |
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43 if ( fread(buffer,1,count,fi) != count ) |
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44 return( -1 ); |
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45 return( 0 ); |
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46 } |
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47 |
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48 /*********** |
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49 ** Write 'count' characters from 'buffer' to a binary file. |
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50 ** Return -1 on failure; 0 on success. |
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51 ***********/ |
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52 |
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53 int block_write( FILE *fo , char *buffer , size_t count ) |
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54 { |
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55 if ( fwrite(buffer,1,count,fo) != count ) |
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56 return( -1 ); |
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57 return( 0 ); |
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58 } |
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59 |
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60 /*********** |
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61 ** Load a dictionary table entry with id TOC_id into memory pointed to by block. |
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62 ** Update the dictionary TOC. |
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63 ** If *block=NULL, allocate the block of memory. |
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64 ** Return 0 on success; -1 on failure. |
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65 ** Set dt_entry->ptr to where the block is stored. |
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66 ***********/ |
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67 |
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68 void *dict_load_block( DICTIONARY *dict , char *toc_id , |
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69 FILE *fi , void *block ) |
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70 { DICT_TOC_ENTRY *dt_entry; |
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71 static void *ptr; |
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72 int index, ret_code; |
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73 |
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74 index = dict_toc_index( dict , toc_id ); |
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75 if ( index != -1 ) { /* Found the id */ |
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76 dt_entry = &(dict->toc[index]); |
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77 } else { |
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78 signal_error( "dict_load_block: could not find TOC_id" , toc_id , 1 ); |
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79 return( NULL ); |
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80 } /* endif */ |
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81 |
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82 if ( block == NULL ) { |
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83 ptr = malloc( dt_entry->size ); |
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84 if ( dict_trace > 3 ) { |
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85 fprintf( ft , "\ndict_load_block allocates %lx bytes at location %p\n" , |
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86 dt_entry->size , ptr ); |
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87 } /* endif */ |
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88 } else { |
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89 ptr = block; |
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90 if ( dict_trace > 3 ) { |
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91 fprintf( ft , "\ndict_load_block uses memory at location %p\n" , ptr ); |
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92 } /* endif */ |
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93 } /* endif */ |
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94 if ( ptr == NULL ) { |
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95 signal_error( "dict_load_block: alloc failed " , toc_id , 1 ); |
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96 return( NULL ); |
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97 } /* endif */ |
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98 |
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99 ret_code = block_read( fi , |
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100 (char*)ptr , |
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101 dt_entry->size , |
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102 dt_entry->offset ); |
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103 if ( ret_code == -1 ) |
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104 return( NULL ); |
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105 |
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106 if ( dt_entry->checksum != |
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107 compute_checksum( dt_entry->size , (char*)ptr ) ) { |
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108 signal_error( "dict_load_block: invalid checksum ", toc_id, 1); |
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109 return( NULL ); |
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110 } /* endif */ |
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111 |
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112 dt_entry->ptr = ptr; |
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113 |
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114 if ( dict_trace > 3 ) { |
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115 fprintf( ft , "\nLoaded block\nTOC entry: id:%s offset:%lx size:%lx ptr:%p checksum:%lx type:%d\n" , |
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116 dict->toc[index].id , dict->toc[index].offset , |
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117 dict->toc[index].size , dict->toc[index].ptr , |
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118 dict->toc[index].checksum , dict->toc[index].type ); |
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119 } /* endif */ |
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120 |
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121 return( ptr ); |
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122 } |
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123 |
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124 /*********** |
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125 ** Save a dictionary table entry. |
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126 ** Update the dictionary TOC entry offset and checksum fields. |
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127 ** Return 0 on success, -1 on failure. |
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128 ** Note: It is assumed that the size and pointer fields in TOC entry are |
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129 ** already up to date; i.e., that they are consistent with the current |
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130 ** location and size of the block being written. This is essential |
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131 ** because the table of contents must have already been written |
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132 ** into the file. |
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133 ***********/ |
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134 |
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135 BOOLEANC dict_save_block( DICTIONARY *dict , char *toc_id , FILE *fo ) |
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136 { DICT_TOC_ENTRY *dt_entry; |
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137 int index, ret_code; |
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138 char *block; |
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139 |
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140 index = dict_toc_index( dict , toc_id ); |
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141 if ( index == -1 ) { |
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142 signal_error( "dict_save_block: id not found " , toc_id , 1 ); |
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143 return( FALSE ); |
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144 } /* endif */ |
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145 dt_entry = &(dict->toc[index]); |
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146 block = (char*)(dt_entry->ptr); |
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147 |
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148 if ( block == NULL ) { |
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149 signal_error( "dict_save_block: NULL block " , toc_id , 1 ); |
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150 return( FALSE ); |
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151 } /* endif */ |
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152 |
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153 /* dt_entry->offset = fseek( fo , 0 , SEEK_END ); */ |
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154 dt_entry->checksum = compute_checksum( dt_entry->size , block ); |
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155 ret_code = block_write( fo , dt_entry->ptr , dt_entry->size ); |
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156 if ( ret_code == -1 ) { |
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157 signal_error( "dict_save_block: block_write failed " , toc_id , 1 ); |
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158 return( FALSE ); |
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159 } /* endif */ |
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160 |
257
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161 if ( dict_trace > 3 ) { |
256
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162 fprintf( ft , "\nStored block\nTOC entry: id:%s offset:%lx size:%lx ptr:%p checksum:%lx type:%d\n" , |
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163 dict->toc[index].id , dict->toc[index].offset , |
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164 dict->toc[index].size , dict->toc[index].ptr , |
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165 dict->toc[index].checksum , dict->toc[index].type ); |
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166 } /* endif */ |
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167 |
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168 return( TRUE ); |
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169 } |
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170 |
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171 /*********** |
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172 ** Look up and id in the table of contents. |
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173 ** Return its index (-1 on failure). |
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174 ***********/ |
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175 |
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176 int dict_toc_index( DICTIONARY *dict , char *toc_id ) |
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177 { int index; |
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178 |
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179 for ( index = 0 ; index < dict->sig->toc_size ; index++ ) { |
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180 if ( strcmp(dict->toc[index].id,toc_id) == 0 ) |
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181 return( index ); |
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182 } /* endfor */ |
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183 |
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184 return( -1 ); |
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185 } |
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186 |
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187 /*********** |
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188 ** Compute a block checksum. |
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189 ** (Currently just returns 0.) |
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190 ***********/ |
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191 |
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192 unsigned long compute_checksum( size_t size , char *block ) |
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193 { |
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194 NOOP(size); |
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195 NOOP(block); |
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196 return( 0 ); |
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197 } |
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198 |
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199 /*********** |
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200 ** Create a dictionary paramter entry. |
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201 ***********/ |
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202 |
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203 DICT_PARM_ENTRY *dict_make_parm_entry( char *id , unsigned long value ) |
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204 { static DICT_PARM_ENTRY *entry; |
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205 |
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206 entry = (DICT_PARM_ENTRY *) malloc( sizeof(DICT_PARM_ENTRY) ); |
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207 if ( entry == NULL ) |
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208 return(NULL); |
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209 |
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210 strncpy( entry->id , id , 13 ); |
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211 entry->value = value; |
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212 |
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213 return( entry ); |
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214 } |
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215 |
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216 /*********** |
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217 ** Look up and id in the parameter array. |
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218 ** Return its index (-1 on failure). |
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219 ***********/ |
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220 |
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221 int dict_parm_index( DICTIONARY *dict , char *parm_id ) |
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222 { long index; |
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223 |
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224 for ( index = 0 ; index < dict->sig->nparms ; index++ ) { |
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225 if ( strcmp( dict->parm[index].id , parm_id ) == 0 ) |
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226 return( (int) index ); |
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227 } /* endfor */ |
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228 |
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229 return( -1 ); |
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230 } |
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231 |
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232 /*********** |
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233 ** Reset table of contents offsets and checksums |
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234 ** in preparation for dict_save(). |
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235 ***********/ |
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236 |
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237 BOOLEANC dict_reset_toc_offsets( DICTIONARY *dict ) |
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238 { int i; |
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239 long offset; |
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240 |
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241 offset = sizeof(DICT_SIG) |
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242 + dict->sig->toc_size * sizeof(DICT_TOC_ENTRY); |
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243 for ( i = 0 ; i < dict->sig->toc_size ; i++ ) { |
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244 dict->toc[i].offset = offset; |
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245 offset += dict->toc[i].size; |
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246 dict->toc[i].checksum = |
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247 compute_checksum( dict->toc[i].size , dict->toc[i].ptr ); |
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248 } /* endfor */ |
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249 |
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250 return( TRUE ); |
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251 } |
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252 |
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253 /*********** |
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254 ** Load the names of the dictionary parameters. |
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255 ** 14 parms |
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256 ***********/ |
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257 |
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258 BOOLEANC dict_set_parm_ids( DICTIONARY *dict ) |
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259 { |
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260 if ( dict==NULL || dict->sig == NULL ) { |
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261 signal_error( "dict_set_parm_ids: Allocate dict and signature first." , "" , 0 ); |
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262 return( FALSE ); |
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263 } |
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264 dict->sig->nparms = 14; |
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265 strcpy( dict->parm[0].id , "FLAGS_______" ); |
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266 strcpy( dict->parm[1].id , "ENTRY_COUNT_" ); |
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267 strcpy( dict->parm[2].id , "ARRAY_SIZE__" ); |
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268 strcpy( dict->parm[3].id , "ARRAY_USED__" ); |
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269 strcpy( dict->parm[4].id , "ARR_GROW_CT_" ); |
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270 strcpy( dict->parm[5].id , "STRING_MAX__" ); |
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271 strcpy( dict->parm[6].id , "STR_GROW_CT_" ); |
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272 strcpy( dict->parm[7].id , "LONG_CHAIN__" ); |
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273 strcpy( dict->parm[8].id , "ALLOW_CHAIN_" ); |
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274 strcpy( dict->parm[9].id , "HASH_TAB_SIZ" ); |
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275 strcpy( dict->parm[10].id , "HASH_MASK___" ); |
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276 strcpy( dict->parm[11].id , "HASH_GROW_CT" ); |
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277 strcpy( dict->parm[12].id , "CHECK_VALUE_" ); |
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278 strcpy( dict->parm[13].id , "SCAN_STR_IX_" ); |
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279 |
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280 return( TRUE ); |
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281 } |
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282 |
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283 /*********** |
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284 ** Set the dictionary parm structure from the values in the dict structure. |
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285 ** 14 parms |
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286 ***********/ |
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287 |
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288 BOOLEANC dict_set_parm_values( DICTIONARY *dict ) |
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289 { int index; |
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290 |
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291 if ( (index=dict_parm_index(dict,"FLAGS_______")) == -1 ) |
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292 return( FALSE ); |
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293 dict->parm[index].value = (unsigned long)dict->flags; |
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294 |
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295 if ( (index=dict_parm_index(dict,"ENTRY_COUNT_")) == -1 ) |
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296 return( FALSE ); |
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297 dict->parm[index].value = (unsigned long)dict->entry_count; |
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298 |
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299 if ( (index=dict_parm_index(dict,"ARRAY_SIZE__")) == -1 ) |
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300 return( FALSE ); |
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301 dict->parm[index].value = (unsigned long)dict->array_size; |
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302 |
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303 if ( (index=dict_parm_index(dict,"ARRAY_USED__")) == -1 ) |
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304 return( FALSE ); |
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305 dict->parm[index].value = (unsigned long)dict->array_used; |
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306 |
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307 if ( (index=dict_parm_index(dict,"ARR_GROW_CT_")) == -1 ) |
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308 return( FALSE ); |
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309 dict->parm[index].value = (unsigned long)dict->array_growth_count; |
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310 |
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311 if ( (index=dict_parm_index(dict,"STRING_MAX__")) == -1 ) |
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312 return( FALSE ); |
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313 dict->parm[index].value = (unsigned long)dict->string_max; |
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314 |
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315 if ( (index=dict_parm_index(dict,"STR_GROW_CT_")) == -1 ) |
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316 return( FALSE ); |
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317 dict->parm[index].value = (unsigned long)dict->string_growth_count; |
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318 |
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319 if ( (index=dict_parm_index(dict,"LONG_CHAIN__")) == -1 ) |
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320 return( FALSE ); |
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321 dict->parm[index].value = (unsigned long)dict->longest_chain_length; |
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322 |
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323 if ( (index=dict_parm_index(dict,"ALLOW_CHAIN_")) == -1 ) |
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324 return( FALSE ); |
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325 dict->parm[index].value = (unsigned long)dict->allowable_chain_length; |
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326 |
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327 if ( (index=dict_parm_index(dict,"HASH_TAB_SIZ")) == -1 ) |
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Import UltraRogue from the Roguelike Restoration Project (r1490)
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328 return( FALSE ); |
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329 dict->parm[index].value = (unsigned long)dict->table_size; |
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330 |
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331 if ( (index=dict_parm_index(dict,"HASH_MASK___")) == -1 ) |
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332 return( FALSE ); |
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333 dict->parm[index].value = (unsigned long)dict->hash_mask; |
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Import UltraRogue from the Roguelike Restoration Project (r1490)
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334 |
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Import UltraRogue from the Roguelike Restoration Project (r1490)
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335 if ( (index=dict_parm_index(dict,"HASH_GROW_CT")) == -1 ) |
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Import UltraRogue from the Roguelike Restoration Project (r1490)
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336 return( FALSE ); |
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Import UltraRogue from the Roguelike Restoration Project (r1490)
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337 dict->parm[index].value = (unsigned long)dict->hash_growth_count; |
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Import UltraRogue from the Roguelike Restoration Project (r1490)
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338 |
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339 if ( (index=dict_parm_index(dict,"CHECK_VALUE_")) == -1 ) |
c495a4f288c6
Import UltraRogue from the Roguelike Restoration Project (r1490)
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340 return( FALSE ); |
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Import UltraRogue from the Roguelike Restoration Project (r1490)
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341 dict->parm[index].value = (unsigned long)dict->check_value; |
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Import UltraRogue from the Roguelike Restoration Project (r1490)
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342 |
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Import UltraRogue from the Roguelike Restoration Project (r1490)
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343 if ( (index=dict_parm_index(dict,"SCAN_STR_IX_")) == -1 ) |
c495a4f288c6
Import UltraRogue from the Roguelike Restoration Project (r1490)
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344 return( FALSE ); |
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345 dict->parm[index].value = (unsigned long)dict->scan_string_index; |
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Import UltraRogue from the Roguelike Restoration Project (r1490)
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346 |
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347 return( TRUE ); |
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Import UltraRogue from the Roguelike Restoration Project (r1490)
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|
348 } |
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Import UltraRogue from the Roguelike Restoration Project (r1490)
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349 |
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Import UltraRogue from the Roguelike Restoration Project (r1490)
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|
350 |
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Import UltraRogue from the Roguelike Restoration Project (r1490)
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|
351 /*********** |
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|
352 ** Set the values in the dict structure from the dictionary parm structure. |
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353 ** 14 parms |
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|
354 ***********/ |
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Import UltraRogue from the Roguelike Restoration Project (r1490)
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|
355 |
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Import UltraRogue from the Roguelike Restoration Project (r1490)
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356 BOOLEANC dict_set_parm_variables( DICTIONARY *dict ) |
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Import UltraRogue from the Roguelike Restoration Project (r1490)
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357 { int index; |
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Import UltraRogue from the Roguelike Restoration Project (r1490)
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diff
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|
358 |
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Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
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diff
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359 if ( (index=dict_parm_index(dict,"FLAGS_______")) == -1 ) |
c495a4f288c6
Import UltraRogue from the Roguelike Restoration Project (r1490)
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parents:
diff
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|
360 return( FALSE ); |
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Import UltraRogue from the Roguelike Restoration Project (r1490)
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parents:
diff
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|
361 dict->flags = (unsigned long)dict->parm[index].value; |
c495a4f288c6
Import UltraRogue from the Roguelike Restoration Project (r1490)
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|
362 |
c495a4f288c6
Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
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|
363 if ( (index=dict_parm_index(dict,"ENTRY_COUNT_")) == -1 ) |
c495a4f288c6
Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
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|
364 return( FALSE ); |
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Import UltraRogue from the Roguelike Restoration Project (r1490)
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parents:
diff
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|
365 dict->entry_count = (long)dict->parm[index].value; |
c495a4f288c6
Import UltraRogue from the Roguelike Restoration Project (r1490)
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diff
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|
366 |
c495a4f288c6
Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
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367 if ( (index=dict_parm_index(dict,"ARRAY_SIZE__")) == -1 ) |
c495a4f288c6
Import UltraRogue from the Roguelike Restoration Project (r1490)
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parents:
diff
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|
368 return( FALSE ); |
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Import UltraRogue from the Roguelike Restoration Project (r1490)
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|
369 dict->array_size = (long)dict->parm[index].value; |
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Import UltraRogue from the Roguelike Restoration Project (r1490)
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370 |
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Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
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371 if ( (index=dict_parm_index(dict,"ARRAY_USED__")) == -1 ) |
c495a4f288c6
Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
372 return( FALSE ); |
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Import UltraRogue from the Roguelike Restoration Project (r1490)
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parents:
diff
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|
373 dict->array_used = (long)dict->parm[index].value; |
c495a4f288c6
Import UltraRogue from the Roguelike Restoration Project (r1490)
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parents:
diff
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|
374 |
c495a4f288c6
Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
375 if ( (index=dict_parm_index(dict,"ARR_GROW_CT_")) == -1 ) |
c495a4f288c6
Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
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|
376 return( FALSE ); |
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Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
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|
377 dict->array_growth_count = (int)dict->parm[index].value; |
c495a4f288c6
Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
378 |
c495a4f288c6
Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
379 if ( (index=dict_parm_index(dict,"STRING_MAX__")) == -1 ) |
c495a4f288c6
Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
380 return( FALSE ); |
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Import UltraRogue from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
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|
381 dict->string_max = (long)dict->parm[index].value ; |
c495a4f288c6
Import UltraRogue from the Roguelike Restoration Project (r1490)
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parents:
diff
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|
382 |
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Import UltraRogue from the Roguelike Restoration Project (r1490)
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383 if ( (index=dict_parm_index(dict,"STR_GROW_CT_")) == -1 ) |
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384 return( FALSE ); |
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385 dict->string_growth_count = (int)dict->parm[index].value; |
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386 |
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387 if ( (index=dict_parm_index(dict,"LONG_CHAIN__")) == -1 ) |
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388 return( FALSE ); |
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389 dict->longest_chain_length = (int)dict->parm[index].value; |
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390 |
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391 if ( (index=dict_parm_index(dict,"ALLOW_CHAIN_")) == -1 ) |
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392 return( FALSE ); |
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393 dict->allowable_chain_length = (int)dict->parm[index].value; |
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394 |
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395 if ( (index=dict_parm_index(dict,"HASH_TAB_SIZ")) == -1 ) |
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396 return( FALSE ); |
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397 dict->table_size = (long)dict->parm[index].value; |
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398 |
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399 if ( (index=dict_parm_index(dict,"HASH_MASK___")) == -1 ) |
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400 return( FALSE ); |
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401 dict->hash_mask = (unsigned long)dict->parm[index].value; |
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402 |
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403 if ( (index=dict_parm_index(dict,"HASH_GROW_CT")) == -1 ) |
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404 return( FALSE ); |
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405 dict->hash_growth_count = (int)dict->parm[index].value; |
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406 |
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407 if ( (index=dict_parm_index(dict,"CHECK_VALUE_")) == -1 ) |
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408 return( FALSE ); |
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409 dict->check_value = (unsigned long)dict->parm[index].value; |
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410 |
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411 if ( (index=dict_parm_index(dict,"SCAN_STR_IX_")) == -1 ) |
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412 return( FALSE ); |
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413 dict->scan_string_index = (long)dict->parm[index].value; |
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414 |
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415 return( TRUE ); |
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416 } |
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417 |
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418 /*********** |
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419 ** If dict_trace (global) > 0 , signal an error |
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420 ** If severity > 0 , abort |
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421 ***********/ |
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422 |
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423 void signal_error( char *header , char *message , int severity ) |
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424 { |
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425 FILE *fpe; |
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426 |
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427 if ( dict_trace > 0 ) { |
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428 printf( "%s: %s\n" , header , message ); |
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429 fpe = fopen( "ERROR.FIL" , "a" ); |
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430 fprintf( fpe , "\n%s: %s\n" , header , message ); |
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431 fclose( fpe ); |
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432 } /* endif */ |
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433 |
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434 if ( severity > 0 ) |
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435 abort(); |
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436 } |