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1 /* ========================================================================
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2 * Copyright 1988-2006 University of Washington
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3 *
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4 * Licensed under the Apache License, Version 2.0 (the "License");
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5 * you may not use this file except in compliance with the License.
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6 * You may obtain a copy of the License at
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7 *
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8 * http://www.apache.org/licenses/LICENSE-2.0
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9 *
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10 *
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11 * ========================================================================
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12 */
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13
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14 /*
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15 * Program: Miscellaneous utility routines
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16 *
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17 * Author: Mark Crispin
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18 * Networks and Distributed Computing
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19 * Computing & Communications
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20 * University of Washington
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21 * Administration Building, AG-44
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22 * Seattle, WA 98195
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23 * Internet: MRC@CAC.Washington.EDU
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24 *
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25 * Date: 5 July 1988
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26 * Last Edited: 30 August 2006
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27 *
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28 * This original version of this file is
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29 * Copyright 1988 Stanford University
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30 * and was developed in the Symbolic Systems Resources Group of the Knowledge
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31 * Systems Laboratory at Stanford University in 1987-88, and was funded by the
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32 * Biomedical Research Technology Program of the NationalInstitutes of Health
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33 * under grant number RR-00785.
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34 */
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35
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36 /* Hash table operations */
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37
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38 #define HASHMULT 29 /* hash polynomial multiplier */
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39
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40 #define HASHENT struct hash_entry
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41
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42 HASHENT {
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43 HASHENT *next; /* next entry with same hash code */
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44 char *name; /* name of this hash entry */
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45 void *data[1]; /* data of this hash entry */
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46 };
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47
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48
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49 #define HASHTAB struct hash_table
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50
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51 HASHTAB {
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52 size_t size; /* size of this table */
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53 HASHENT *table[1]; /* table */
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54 };
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55
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56
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57 /* KLUDGE ALERT!!!
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58 *
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59 * Yes, write() is overridden here instead of in osdep. This
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60 * is because misc.h is one of the last files that most things #include, so
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61 * this should avoid problems with some system #include file.
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62 */
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63
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64 #define write safe_write
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65
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66
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67 /* Some C compilers have these as macros */
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68
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69 #undef min
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70 #undef max
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71
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72
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73 /* And some C libraries have these as int functions */
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74
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75 #define min Min
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76 #define max Max
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77
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78
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79 /* Compatibility definitions */
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80
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81 #define pmatch(s,pat) \
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82 pmatch_full (s,pat,NIL)
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83
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84 /* Function prototypes */
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85
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86 unsigned char *ucase (unsigned char *string);
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87 unsigned char *lcase (unsigned char *string);
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88 char *cpystr (const char *string);
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89 char *cpytxt (SIZEDTEXT *dst,char *text,unsigned long size);
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90 char *textcpy (SIZEDTEXT *dst,SIZEDTEXT *src);
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91 char *textcpystring (SIZEDTEXT *text,STRING *bs);
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92 char *textcpyoffstring (SIZEDTEXT *text,STRING *bs,unsigned long offset,
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93 unsigned long size);
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94 unsigned long find_rightmost_bit (unsigned long *valptr);
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95 long min (long i,long j);
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96 long max (long i,long j);
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97 long search (unsigned char *base,long basec,unsigned char *pat,long patc);
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98 long ssearch (unsigned char *base,long basec,unsigned char *pat,long patc);
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99 HASHTAB *hash_create (size_t size);
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100 void hash_destroy (HASHTAB **hashtab);
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101 void hash_reset (HASHTAB *hashtab);
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102 unsigned long hash_index (HASHTAB *hashtab,char *key);
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103 void **hash_lookup (HASHTAB *hashtab,char *key);
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104 HASHENT *hash_add (HASHTAB *hashtab,char *key,void *data,long extra);
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105 void **hash_lookup_and_add (HASHTAB *hashtab,char *key,void *data,long extra);
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106 unsigned char hex2byte (unsigned char c1,unsigned char c2);
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107 int compare_ulong (unsigned long l1,unsigned long l2);
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108 int compare_uchar (unsigned char c1,unsigned char c2);
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109 int compare_cstring (unsigned char *s1,unsigned char *s2);
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110 int compare_csizedtext (unsigned char *s1,SIZEDTEXT *s2);
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