1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
|
/* $RCSfile: util.c,v $$Revision: 4.1 $$Date: 92/08/07 18:29:29 $
*
* Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1999,
* 2000, 2001, by Larry Wall and others
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
*
* $Log: util.c,v $
*/
#include "EXTERN.h"
#include "a2p.h"
#include "INTERN.h"
#include "util.h"
#include <stdarg.h>
#define FLUSH
static char nomem[] = "Out of memory!\n";
/* paranoid version of malloc */
Malloc_t
safemalloc(MEM_SIZE size)
{
Malloc_t ptr;
/* malloc(0) is NASTY on some systems */
ptr = malloc(size ? size : 1);
#ifdef DEBUGGING
if (debug & 128)
fprintf(stderr,"0x%lx: (%05d) malloc %ld bytes\n",(unsigned long)ptr,
an++,(long)size);
#endif
if (ptr != Nullch)
return ptr;
else {
fputs(nomem,stdout) FLUSH;
exit(1);
}
/*NOTREACHED*/
return 0;
}
/* paranoid version of realloc */
Malloc_t
saferealloc(Malloc_t where, MEM_SIZE size)
{
Malloc_t ptr;
/* realloc(0) is NASTY on some systems */
ptr = realloc(where, size ? size : 1);
#ifdef DEBUGGING
if (debug & 128) {
fprintf(stderr,"0x%lx: (%05d) rfree\n",(unsigned long)where,an++);
fprintf(stderr,"0x%lx: (%05d) realloc %ld bytes\n",(unsigned long)ptr,an++,(long)size);
}
#endif
if (ptr != Nullch)
return ptr;
else {
fputs(nomem,stdout) FLUSH;
exit(1);
}
/*NOTREACHED*/
return 0;
}
/* safe version of free */
Free_t
safefree(Malloc_t where)
{
#ifdef DEBUGGING
if (debug & 128)
fprintf(stderr,"0x%lx: (%05d) free\n",(unsigned long)where,an++);
#endif
free(where);
}
/* safe version of string copy */
char *
safecpy(char *to, register char *from, register int len)
{
register char *dest = to;
if (from != Nullch)
for (len--; len && (*dest++ = *from++); len--) ;
*dest = '\0';
return to;
}
/* copy a string up to some (non-backslashed) delimiter, if any */
char *
cpytill(register char *to, register char *from, register int delim)
{
for (; *from; from++,to++) {
if (*from == '\\') {
if (from[1] == delim)
from++;
else if (from[1] == '\\')
*to++ = *from++;
}
else if (*from == delim)
break;
*to = *from;
}
*to = '\0';
return from;
}
char *
cpy2(register char *to, register char *from, register int delim)
{
for (; *from; from++,to++) {
if (*from == '\\')
*to++ = *from++;
else if (*from == '$')
*to++ = '\\';
else if (*from == delim)
break;
*to = *from;
}
*to = '\0';
return from;
}
/* return ptr to little string in big string, NULL if not found */
char *
instr(char *big, char *little)
{
register char *t, *s, *x;
for (t = big; *t; t++) {
for (x=t,s=little; *s; x++,s++) {
if (!*x)
return Nullch;
if (*s != *x)
break;
}
if (!*s)
return t;
}
return Nullch;
}
/* copy a string to a safe spot */
char *
savestr(char *str)
{
register char *newaddr = (char *) safemalloc((MEM_SIZE)(strlen(str)+1));
(void)strcpy(newaddr,str);
return newaddr;
}
/* grow a static string to at least a certain length */
void
growstr(char **strptr, int *curlen, int newlen)
{
if (newlen > *curlen) { /* need more room? */
if (*curlen)
*strptr = (char *) saferealloc(*strptr,(MEM_SIZE)newlen);
else
*strptr = (char *) safemalloc((MEM_SIZE)newlen);
*curlen = newlen;
}
}
void
croak(char *pat,...)
{
#if defined(HAS_VPRINTF)
va_list args;
va_start(args, pat);
vfprintf(stderr,pat,args);
va_end(args);
#else
fprintf(stderr,pat,a1,a2,a3,a4);
#endif
exit(1);
}
void
fatal(char *pat,...)
{
#if defined(HAS_VPRINTF)
va_list args;
va_start(args, pat);
vfprintf(stderr,pat,args);
va_end(args);
#else
fprintf(stderr,pat,a1,a2,a3,a4);
#endif
exit(1);
}
#if defined(DARWIN)
__private_extern__ /* warn() conflicts with libc */
#endif
void
warn(char *pat,...)
{
#if defined(HAS_VPRINTF)
va_list args;
va_start(args, pat);
vfprintf(stderr,pat,args);
va_end(args);
#else
fprintf(stderr,pat,a1,a2,a3,a4);
#endif
}
|
