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annotate urogue/dictutil.c @ 295:1e1c81fbb533

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Rogue V5: fix elemental wands. Bolts often failed to hit, due to some struct members not being initialized. Reported by 'LazyCat' from RogueTemple.
author John "Elwin" Edwards
date Fri, 12 Jan 2018 18:02:39 -0500
parents c4b12d2d1dcd
children 13b482bd9e66
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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 static char sccsid[] = "%W% %G%";
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16
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17 #include <stdio.h>
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18 #include <string.h>
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19 #include <stdlib.h>
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20 #if !defined(OS2) && !defined(_WIN32)
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21 #include <unistd.h>
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22 #else
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23 #include <io.h>
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24 #include <fcntl.h>
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25 #endif
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26
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27 #include "dict.h"
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28 #include "dictutil.h"
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29 #include "rogue.h"
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30
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31 int dict_trace;
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32 FILE *ft;
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33
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34
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35 /***********
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36 ** Read 'count' characters into 'buffer' at 'offset' in a binary file
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37 ** Return 0 on success; -1 on failure;
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38 ***********/
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39
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40 int block_read( FILE *fi , char *buffer , size_t count , long offset )
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41 {
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42 if ( fseek(fi,offset,SEEK_SET) == -1 )
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43 return( -1 );
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44
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45 if ( fread(buffer,1,count,fi) != count )
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46 return( -1 );
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47 return( 0 );
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48 }
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49
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50 /***********
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51 ** Write 'count' characters from 'buffer' to a binary file.
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52 ** Return -1 on failure; 0 on success.
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53 ***********/
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54
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55 int block_write( FILE *fo , char *buffer , size_t count )
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56 {
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57 if ( fwrite(buffer,1,count,fo) != count )
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58 return( -1 );
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59 return( 0 );
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60 }
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61
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62 /***********
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63 ** Load a dictionary table entry with id TOC_id into memory pointed to by block.
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64 ** Update the dictionary TOC.
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65 ** If *block=NULL, allocate the block of memory.
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66 ** Return 0 on success; -1 on failure.
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67 ** Set dt_entry->ptr to where the block is stored.
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68 ***********/
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69
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70 void *dict_load_block( DICTIONARY *dict , char *toc_id ,
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71 FILE *fi , void *block )
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72 { DICT_TOC_ENTRY *dt_entry;
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73 static void *ptr;
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74 int index, ret_code;
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75
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76 index = dict_toc_index( dict , toc_id );
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77 if ( index != -1 ) { /* Found the id */
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78 dt_entry = &(dict->toc[index]);
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79 } else {
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80 signal_error( "dict_load_block: could not find TOC_id" , toc_id , 1 );
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81 return( NULL );
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82 } /* endif */
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83
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84 if ( block == NULL ) {
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85 ptr = malloc( dt_entry->size );
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86 if ( dict_trace > 3 ) {
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87 fprintf( ft , "\ndict_load_block allocates %lx bytes at location %p\n" ,
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88 dt_entry->size , ptr );
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89 } /* endif */
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90 } else {
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91 ptr = block;
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92 if ( dict_trace > 3 ) {