18 |
|
#if 1 |
19 |
|
|
20 |
|
char * |
21 |
< |
savqstr(char *s) /* save a private string */ |
21 |
> |
savqstr(const char *s) /* save a private string */ |
22 |
|
{ |
23 |
|
char *cp; |
24 |
|
char *newp; |
25 |
|
|
26 |
+ |
if (s == NULL) |
27 |
+ |
return(NULL); |
28 |
+ |
if (!*s) |
29 |
+ |
return(""); |
30 |
|
for (cp = s; *cp++; ) /* compute strlen()+1 */ |
31 |
|
; |
32 |
|
newp = (char *)malloc(cp-s); |
34 |
|
eputs("out of memory in savqstr"); |
35 |
|
quit(1); |
36 |
|
} |
37 |
< |
for (cp = newp; (*cp++ = *s++); ) /* inline strcpy() */ |
37 |
> |
for (cp = newp; (*cp++ = *s++); ) /* inline strcpy() */ |
38 |
|
; |
39 |
|
return(newp); /* return new location */ |
40 |
|
} |
43 |
|
void |
44 |
|
freeqstr(char *s) /* free a private string */ |
45 |
|
{ |
46 |
< |
if (s != NULL) |
47 |
< |
free((void *)s); |
46 |
> |
if (s != NULL && *s) |
47 |
> |
free(s); |
48 |
|
} |
49 |
|
|
50 |
|
#else |
74 |
|
|
75 |
|
|
76 |
|
char * |
77 |
< |
savqstr(char *s) /* save a private string */ |
77 |
> |
savqstr(const char *s) /* save a private string */ |
78 |
|
{ |
79 |
|
static char *curp = NULL; /* allocated memory pointer */ |
80 |
|
static unsigned nrem = 0; /* bytes remaining in block */ |
82 |
|
char *cp; |
83 |
|
unsigned n; |
84 |
|
|
85 |
+ |
if (s == NULL) |
86 |
+ |
return(NULL); |
87 |
+ |
if (!*s) |
88 |
+ |
return(""); |
89 |
|
for (cp = s; *cp++; ) /* compute strlen()+1 */ |
90 |
|
; |
91 |
|
if ((n = cp-s) > nrem) { /* do we need more core? */ |
92 |
|
bfree(curp, nrem); /* free remnant */ |
93 |
|
while (n > nextalloc) |
94 |
|
nextalloc <<= 1; |
95 |
< |
if ((curp = bmalloc(nrem=nextalloc)) == NULL) { |
95 |
> |
if ((curp = (char *)bmalloc(nrem=nextalloc)) == NULL) { |
96 |
|
eputs("out of memory in savqstr"); |
97 |
|
quit(1); |
98 |
|
} |
111 |
|
void |
112 |
|
freeqstr(char *s) /* free a private string (not recommended) */ |
113 |
|
{ |
114 |
< |
bfree(s, strlen(s)+1); |
114 |
> |
if (s != NULL && *s) |
115 |
> |
bfree(s, strlen(s)+1); |
116 |
|
} |
117 |
|
|
118 |
|
#endif |