1 7285a491 2004-06-17 devnull #include <u.h>
 2 7285a491 2004-06-17 devnull #include <libc.h>
 3 7285a491 2004-06-17 devnull #include <bio.h>
 4 7285a491 2004-06-17 devnull #include <libsec.h>
 5 7285a491 2004-06-17 devnull #include <ctype.h>
 6 7285a491 2004-06-17 devnull 
 7 7285a491 2004-06-17 devnull #include "iso9660.h"
 8 7285a491 2004-06-17 devnull 
 9 7285a491 2004-06-17 devnull typedef struct Stringtab	Stringtab;
10 7285a491 2004-06-17 devnull struct Stringtab {
11 7285a491 2004-06-17 devnull 	Stringtab *link;
12 7285a491 2004-06-17 devnull 	char *str;
13 7285a491 2004-06-17 devnull };
14 7285a491 2004-06-17 devnull 
15 7285a491 2004-06-17 devnull static Stringtab *stab[1024];
16 7285a491 2004-06-17 devnull 
17 7285a491 2004-06-17 devnull static uint
18 7285a491 2004-06-17 devnull hash(char *s)
19 7285a491 2004-06-17 devnull {
20 7285a491 2004-06-17 devnull 	uint h;
21 7285a491 2004-06-17 devnull 	uchar *p;
22 7285a491 2004-06-17 devnull 
23 7285a491 2004-06-17 devnull 	h = 0;
24 7285a491 2004-06-17 devnull 	for(p=(uchar*)s; *p; p++)
25 7285a491 2004-06-17 devnull 		h = h*37 + *p;
26 7285a491 2004-06-17 devnull 	return h;
27 7285a491 2004-06-17 devnull }
28 7285a491 2004-06-17 devnull 
29 7285a491 2004-06-17 devnull static char*
30 7285a491 2004-06-17 devnull estrdup(char *s)
31 7285a491 2004-06-17 devnull {
32 7285a491 2004-06-17 devnull 	if((s = strdup(s)) == nil)
33 7285a491 2004-06-17 devnull 		sysfatal("strdup(%.10s): out of memory", s);
34 7285a491 2004-06-17 devnull 	return s;
35 7285a491 2004-06-17 devnull }
36 7285a491 2004-06-17 devnull 
37 7285a491 2004-06-17 devnull char*
38 7285a491 2004-06-17 devnull atom(char *str)
39 7285a491 2004-06-17 devnull {
40 7285a491 2004-06-17 devnull 	uint h;
41 7285a491 2004-06-17 devnull 	Stringtab *tab;
42 fa325e9b 2020-01-10 cross 
43 7285a491 2004-06-17 devnull 	h = hash(str) % nelem(stab);
44 7285a491 2004-06-17 devnull 	for(tab=stab[h]; tab; tab=tab->link)
45 7285a491 2004-06-17 devnull 		if(strcmp(str, tab->str) == 0)
46 7285a491 2004-06-17 devnull 			return tab->str;
47 7285a491 2004-06-17 devnull 
48 7285a491 2004-06-17 devnull 	tab = emalloc(sizeof *tab);
49 7285a491 2004-06-17 devnull 	tab->str = estrdup(str);
50 7285a491 2004-06-17 devnull 	tab->link = stab[h];
51 7285a491 2004-06-17 devnull 	stab[h] = tab;
52 7285a491 2004-06-17 devnull 	return tab->str;
53 7285a491 2004-06-17 devnull }
54 7285a491 2004-06-17 devnull 
55 7285a491 2004-06-17 devnull void*
56 7285a491 2004-06-17 devnull emalloc(ulong n)
57 7285a491 2004-06-17 devnull {
58 7285a491 2004-06-17 devnull 	void *p;
59 7285a491 2004-06-17 devnull 
60 7285a491 2004-06-17 devnull 	if((p = malloc(n)) == nil)
61 7285a491 2004-06-17 devnull 		sysfatal("malloc(%lud): out of memory", n);
62 7285a491 2004-06-17 devnull 	memset(p, 0, n);
63 7285a491 2004-06-17 devnull 	return p;
64 7285a491 2004-06-17 devnull }
65 7285a491 2004-06-17 devnull 
66 7285a491 2004-06-17 devnull void*
67 7285a491 2004-06-17 devnull erealloc(void *v, ulong n)
68 7285a491 2004-06-17 devnull {
69 7285a491 2004-06-17 devnull 	if((v = realloc(v, n)) == nil)
70 7285a491 2004-06-17 devnull 		sysfatal("realloc(%p, %lud): out of memory", v, n);
71 7285a491 2004-06-17 devnull 	return v;
72 7285a491 2004-06-17 devnull }
73 7285a491 2004-06-17 devnull 
74 7285a491 2004-06-17 devnull char*
75 7285a491 2004-06-17 devnull struprcpy(char *p, char *s)
76 7285a491 2004-06-17 devnull {
77 7285a491 2004-06-17 devnull 	char *op;
78 7285a491 2004-06-17 devnull 
79 7285a491 2004-06-17 devnull 	op = p;
80 7285a491 2004-06-17 devnull 	for(; *s; s++)
81 3bd56b04 2005-09-09 devnull 		*p++ = toupper((uchar)*s);
82 7285a491 2004-06-17 devnull 	*p = '\0';
83 7285a491 2004-06-17 devnull 
84 7285a491 2004-06-17 devnull 	return op;
85 7285a491 2004-06-17 devnull }
86 7285a491 2004-06-17 devnull 
87 7285a491 2004-06-17 devnull int
88 7285a491 2004-06-17 devnull chat(char *fmt, ...)
89 7285a491 2004-06-17 devnull {
90 7285a491 2004-06-17 devnull 	va_list arg;
91 7285a491 2004-06-17 devnull 
92 7285a491 2004-06-17 devnull 	if(!chatty)
93 7285a491 2004-06-17 devnull 		return 0;
94 7285a491 2004-06-17 devnull 	va_start(arg, fmt);
95 7285a491 2004-06-17 devnull 	vfprint(2, fmt, arg);
96 7285a491 2004-06-17 devnull 	va_end(arg);
97 7285a491 2004-06-17 devnull 	return 1;
98 7285a491 2004-06-17 devnull }