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| 21 |
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#include "copyright.h" |
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+ |
#include <stdlib.h> |
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#include "rtmisc.h" |
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#include "rterror.h" |
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#include "rtio.h" |
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|
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#ifndef NHASH |
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< |
#define NHASH 509 /* hash table size (prime!) */ |
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> |
#define NHASH 2039 /* hash table size (prime!) */ |
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#endif |
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typedef struct s_head { |
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#define hash(s) (shash(s)%NHASH) |
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|
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– |
extern char *savestr(), *strcpy(), *malloc(); |
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– |
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– |
#define NULL 0 |
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– |
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#define string(sp) ((char *)((sp)+1)) |
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#define salloc(str) (S_HEAD *)malloc(sizeof(S_HEAD)+1+strlen(str)) |
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char * |
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< |
savestr(str) /* save a string */ |
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< |
char *str; |
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> |
savestr(char *str) /* save a string */ |
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{ |
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< |
register int hval; |
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< |
register S_HEAD *sp; |
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> |
int hval; |
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> |
S_HEAD *sp; |
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if (str == NULL) |
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return(NULL); |
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+ |
if (!*str) |
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return ""; |
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hval = hash(str); |
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for (sp = stab[hval]; sp != NULL; sp = sp->next) |
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if (!strcmp(str, string(sp))) { |
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| 76 |
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| 77 |
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void |
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< |
freestr(s) /* free a string */ |
| 76 |
< |
char *s; |
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> |
freestr(char *s) /* free a string */ |
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{ |
| 80 |
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int hval; |
| 81 |
< |
register S_HEAD *spl, *sp; |
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> |
S_HEAD *spl, *sp; |
| 82 |
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|
| 83 |
< |
if (s == NULL) |
| 83 |
> |
if (s == NULL || !*s) |
| 84 |
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return; |
| 85 |
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hval = hash(s); |
| 86 |
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for (spl = NULL, sp = stab[hval]; sp != NULL; spl = sp, sp = sp->next) |
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| 99 |
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| 100 |
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int |
| 101 |
< |
shash(s) |
| 100 |
< |
register char *s; |
| 101 |
> |
shash(char *s) |
| 102 |
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{ |
| 103 |
< |
register int h = 0; |
| 103 |
> |
int h = 0; |
| 104 |
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| 105 |
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while (*s) |
| 106 |
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h = (h<<1 & 0x7fff) ^ (*s++ & 0xff); |
