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annotate urogue/dict.h @ 264:778938a5c21d

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UltraRogue: add location for character files. When using the -n option, UltraRogue will look for character files in a single location, similar to save files. The location is chosen by defining CHRDIR in getplay.c, at least until UltraRogue gets integrated with the build systems.
author John "Elwin" Edwards
date Sun, 19 Feb 2017 19:47:09 -0500
parents c495a4f288c6
children 13b482bd9e66
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1 /*
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2 dict.h
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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 Change history:
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13 (AK:04/03/95) - Added hook for extensions to dictionary structure.
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14 (AK:04/04/95) - Added dictionary signature, table of contents and parameter
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15 structure defintions and fields in DICTIONARY structure
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16 -------------------*/
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17
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18 #ifndef dict_h_included
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19 #define dict_h_included
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20
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21 static char dict_sccsid[] = "%W% %G%";
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22
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23 #ifndef TRUE
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24 #define TRUE 1
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25 #define FALSE 0
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26 #endif
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27
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28 #define DICT_NONE 0x00000000 /* no flags set */
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29 #define DICT_VALIDATE 0xdeadbeef /* look for this in every dictionary structure */
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30 #define DICT_ENTRY_NONE -1 /* index of invalid entry */
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31
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32 typedef unsigned char BOOLEANC;
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33
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34 /*------------------
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35 string table entry
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36 ------------------*/
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37 typedef struct string_entry {
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38 long string_offset; /* offset in string array */
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39 long count; /* number of occurrences of string */
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40 long next; /* offset of next in hash chain */
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41 void *any_ptr; /* free pointer */
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42 unsigned long flags; /* user definable flag value for string */
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43 unsigned long hash_value; /* hash value of string using hash function */
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44 } STRING_ENTRY;
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45
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46 /*--------------------
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47 Dictionary signature (AK:04/04/95)
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48 --------------------*/
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49 typedef struct dict_sig_ { /* Dictionary signature */
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50 unsigned long check_value; /* 0xdeadbeef */
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51 int toc_size; /* # of entries in Table of Contents */
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52 long nparms; /* # of parameters */
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53 unsigned long checksum; /* Checksum for TOC */
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54 } DICT_SIG;
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55
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56 /*----------------------------------
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57 Dictionary table of contents entry (AK:04/04/95)
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58 ----------------------------------*/
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59 typedef struct TOC_entry_ { /* Dictionary table of contents entry */
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60 char id[5]; /* Field identifier: */
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61 long offset; /* Offset (bytes) of entry in file */
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62 long size; /* Size (bytes) of entry */
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63 void *ptr; /* Where entry is stored in memory */
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64 unsigned long checksum; /* Checksum of entry */
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65 int type; /* 0=ordinary ; 1=EVECTOR ; 2=NULL */
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66 } DICT_TOC_ENTRY;
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67
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68 /*--------------------------------
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69 Dictionary parameter table entry (AK:04/04/95)
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70 --------------------------------*/
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71 typedef struct dict_parm_entry_ { /* Dictionary parameter table entry */
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72 char id[13]; /* Parameter identifier */
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73 unsigned long value; /* Parameter value */
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74 } DICT_PARM_ENTRY;
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75
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76
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77 /*---------------------------
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78 Hash dictionary information
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79 ---------------------------*/
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80 typedef struct dictionary {
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81 unsigned long check_value; /* check validation value */
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82 unsigned long flags; /* flag values */
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83 long entry_count; /* number of used entries in each table */
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84
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85 char *string_array; /* storage for strings */
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86 long array_size; /* number of bytes allocated */
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87 long array_used; /* number of bytes occupied */
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88 int array_growth_count; /* number of times grown */
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89
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90 STRING_ENTRY *string_table; /* string table */
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91 long string_max; /* max number of entries in string table */
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92 long scan_string_index; /* current index into string table for scan */
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93 int string_growth_count; /* number of times had to grow string table */
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94
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95 long *chains; /* vector of array indices to hash entries */
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96 int longest_chain_length; /* longest chain length in hash table */
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97 int allowable_chain_length; /* chain lengths always < this */
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98 long table_size; /* number of elements in hash entries vector */
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99 unsigned long hash_mask; /* mask for doing mod() function */
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100 int hash_growth_count; /* number of times had to grow hash table */
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101
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102 void *ext; /* Hook for extensions to the dictionary (AK:04/03/95) */
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103
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104 DICT_SIG *sig; /* Signature (AK:04/04/95) */
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105 DICT_TOC_ENTRY *toc; /* Table of contents (AK:04/04/95) */
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106 DICT_PARM_ENTRY *parm; /* Parameters (AK:04/04/95) */
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107
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108 } DICTIONARY;
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109
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110 /*--------------------------------------------------------------
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111 dict_create: create a dictionary and initialize its structures
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112 --------------------------------------------------------------*/
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113 extern DICTIONARY *dict_create(
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114 const long toc_size,
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115 const long initial_string_count,
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116 const long initial_hash_entries,
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117 const long max_chain_length );
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118
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119 /*-------------------------------------------------
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120 dict_delete: deletes an entry from the dictionary
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121 -------------------------------------------------*/
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122 extern BOOLEANC dict_delete(
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123 const DICTIONARY *dict,
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124 const char *s,
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125 const long count );
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126
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127 /*---------------------------------------------------
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128 dict_destroy: discard a dictionary and its contents
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129 ---------------------------------------------------*/
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130 extern BOOLEANC dict_destroy(
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131 DICTIONARY *dict );
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132
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133 /*------------------------------------------------
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134 dict_export: write a dictionary to an ASCII file
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135 ------------------------------------------------*/
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136 extern BOOLEANC dict_export(
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137 DICTIONARY *dict,
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138 const char *fname );
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139
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140 /*-------------------------------------------------
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141 dict_import: read a dictionary from an ASCII file
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142 -------------------------------------------------*/
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143 extern DICTIONARY *dict_import(
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144 const char *dict_fname,
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145 const long initial_string_count,
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146 const long initial_hash_entries,
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147 const long max_chain_length );
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148
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149 /*------------------------------------------------------------------
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150 dict_insert: add entries into the dictionary, growing as necessary
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151 ------------------------------------------------------------------*/
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152 extern STRING_ENTRY *dict_insert(
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153 DICTIONARY *dict,
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154 char *s,
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155 const long occurences,
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156 const unsigned long flags,
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157 void *any_ptr,
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158 long *number );
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159
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160 /*----------------------------------------------------
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161 dict_load: read a dictionary from a file into memory
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162 ----------------------------------------------------*/
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163 extern DICTIONARY *dict_load(
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164 const char *fname );
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165
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166 /*-----------------------------------------------------------------
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167 dict_merge: merges the contents of a dictionary into another one,
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168 updating the contents of the destination
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169 -----------------------------------------------------------------*/
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170 extern BOOLEANC dict_merge(
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171 const DICTIONARY *dst,
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172 const DICTIONARY *src,
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173 const BOOLEANC move );
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174
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175 /*----------------------------------------------------
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176 dict_save: save a dictionary from memory into a file
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177 ----------------------------------------------------*/
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178 extern BOOLEANC dict_save(
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179 DICTIONARY *dict,
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180 const char *fname );
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181
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182 /*-----------------------------------------------
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183 dict_scan_begin: begin a scan of the dictionary
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184 -----------------------------------------------*/
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185 extern BOOLEANC dict_scan_begin(
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186 DICTIONARY *dict );
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187
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188 /*--------------------------------------------
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189 dict_scan_next: get the next entry in a scan
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190 --------------------------------------------*/
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191 extern STRING_ENTRY *dict_scan_next(
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192 DICTIONARY *dict );
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193
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194 /*-----------------------------------------------
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195 dict_search: look for entries in the dictionary
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196 -----------------------------------------------*/
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197 extern STRING_ENTRY *dict_search(
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198 const DICTIONARY *dict,
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199 const char *s,
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200 long *number );
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201
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202 /*----------------------------------------------------------------------
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203 dict_string_by_number: return string pointer for a given string number
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204 ----------------------------------------------------------------------*/
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205 extern STRING_ENTRY *dict_string_by_number(
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206 const DICTIONARY *dict,
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207 const long number );
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208
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209 /*----------------------------------------------------------
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210 dict_union: merges contents of 2 dictionaries into a third
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211 ----------------------------------------------------------*/
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212 extern DICTIONARY *dict_union(
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213 const DICTIONARY *dict1,
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214 const DICTIONARY *dict2 );
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215
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216 #endif /* dict_h_included */