Commit | Line | Data |
79072805 |
1 | /* $RCSfile: util.c,v $$Revision: 4.1 $$Date: 92/08/07 18:29:29 $ |
a687059c |
2 | * |
d48672a2 |
3 | * Copyright (c) 1991, Larry Wall |
a687059c |
4 | * |
d48672a2 |
5 | * You may distribute under the terms of either the GNU General Public |
6 | * License or the Artistic License, as specified in the README file. |
8d063cd8 |
7 | * |
8 | * $Log: util.c,v $ |
8d063cd8 |
9 | */ |
10 | |
8d063cd8 |
11 | #include "EXTERN.h" |
12 | #include "a2p.h" |
13 | #include "INTERN.h" |
14 | #include "util.h" |
15 | |
55497cff |
16 | #ifdef I_STDARG |
17 | # include <stdarg.h> |
18 | #endif |
8d063cd8 |
19 | #define FLUSH |
8d063cd8 |
20 | |
21 | static char nomem[] = "Out of memory!\n"; |
22 | |
23 | /* paranoid version of malloc */ |
24 | |
8d063cd8 |
25 | |
75f92628 |
26 | Malloc_t |
8d063cd8 |
27 | safemalloc(size) |
28 | MEM_SIZE size; |
29 | { |
6d82b384 |
30 | Malloc_t ptr; |
8d063cd8 |
31 | |
6d82b384 |
32 | /* malloc(0) is NASTY on some systems */ |
33 | ptr = malloc(size ? size : 1); |
8d063cd8 |
34 | #ifdef DEBUGGING |
35 | if (debug & 128) |
36 | fprintf(stderr,"0x%x: (%05d) malloc %d bytes\n",ptr,an++,size); |
37 | #endif |
38 | if (ptr != Nullch) |
39 | return ptr; |
40 | else { |
41 | fputs(nomem,stdout) FLUSH; |
42 | exit(1); |
43 | } |
44 | /*NOTREACHED*/ |
45 | } |
46 | |
47 | /* paranoid version of realloc */ |
48 | |
75f92628 |
49 | Malloc_t |
8d063cd8 |
50 | saferealloc(where,size) |
6d82b384 |
51 | Malloc_t where; |
8d063cd8 |
52 | MEM_SIZE size; |
53 | { |
6d82b384 |
54 | Malloc_t ptr; |
8d063cd8 |
55 | |
6d82b384 |
56 | /* realloc(0) is NASTY on some systems */ |
57 | ptr = realloc(where, size ? size : 1); |
8d063cd8 |
58 | #ifdef DEBUGGING |
59 | if (debug & 128) { |
60 | fprintf(stderr,"0x%x: (%05d) rfree\n",where,an++); |
61 | fprintf(stderr,"0x%x: (%05d) realloc %d bytes\n",ptr,an++,size); |
62 | } |
63 | #endif |
64 | if (ptr != Nullch) |
65 | return ptr; |
66 | else { |
67 | fputs(nomem,stdout) FLUSH; |
68 | exit(1); |
69 | } |
70 | /*NOTREACHED*/ |
71 | } |
72 | |
73 | /* safe version of free */ |
74 | |
6d82b384 |
75 | Free_t |
8d063cd8 |
76 | safefree(where) |
6d82b384 |
77 | Malloc_t where; |
8d063cd8 |
78 | { |
79 | #ifdef DEBUGGING |
80 | if (debug & 128) |
81 | fprintf(stderr,"0x%x: (%05d) free\n",where,an++); |
82 | #endif |
83 | free(where); |
84 | } |
85 | |
86 | /* safe version of string copy */ |
87 | |
88 | char * |
89 | safecpy(to,from,len) |
90 | char *to; |
91 | register char *from; |
92 | register int len; |
93 | { |
94 | register char *dest = to; |
95 | |
96 | if (from != Nullch) |
97 | for (len--; len && (*dest++ = *from++); len--) ; |
98 | *dest = '\0'; |
99 | return to; |
100 | } |
101 | |
8d063cd8 |
102 | /* copy a string up to some (non-backslashed) delimiter, if any */ |
103 | |
104 | char * |
105 | cpytill(to,from,delim) |
106 | register char *to, *from; |
107 | register int delim; |
108 | { |
109 | for (; *from; from++,to++) { |
378cc40b |
110 | if (*from == '\\') { |
111 | if (from[1] == delim) |
112 | from++; |
113 | else if (from[1] == '\\') |
114 | *to++ = *from++; |
115 | } |
8d063cd8 |
116 | else if (*from == delim) |
117 | break; |
118 | *to = *from; |
119 | } |
120 | *to = '\0'; |
121 | return from; |
122 | } |
123 | |
378cc40b |
124 | |
8d063cd8 |
125 | char * |
126 | cpy2(to,from,delim) |
127 | register char *to, *from; |
128 | register int delim; |
129 | { |
130 | for (; *from; from++,to++) { |
378cc40b |
131 | if (*from == '\\') |
8d063cd8 |
132 | *to++ = *from++; |
133 | else if (*from == '$') |
134 | *to++ = '\\'; |
135 | else if (*from == delim) |
136 | break; |
137 | *to = *from; |
138 | } |
139 | *to = '\0'; |
140 | return from; |
141 | } |
142 | |
143 | /* return ptr to little string in big string, NULL if not found */ |
144 | |
145 | char * |
146 | instr(big, little) |
147 | char *big, *little; |
148 | |
149 | { |
150 | register char *t, *s, *x; |
151 | |
152 | for (t = big; *t; t++) { |
153 | for (x=t,s=little; *s; x++,s++) { |
154 | if (!*x) |
155 | return Nullch; |
156 | if (*s != *x) |
157 | break; |
158 | } |
159 | if (!*s) |
160 | return t; |
161 | } |
162 | return Nullch; |
163 | } |
164 | |
165 | /* copy a string to a safe spot */ |
166 | |
167 | char * |
168 | savestr(str) |
169 | char *str; |
170 | { |
171 | register char *newaddr = safemalloc((MEM_SIZE)(strlen(str)+1)); |
172 | |
173 | (void)strcpy(newaddr,str); |
174 | return newaddr; |
175 | } |
176 | |
177 | /* grow a static string to at least a certain length */ |
178 | |
179 | void |
180 | growstr(strptr,curlen,newlen) |
181 | char **strptr; |
182 | int *curlen; |
183 | int newlen; |
184 | { |
185 | if (newlen > *curlen) { /* need more room? */ |
186 | if (*curlen) |
187 | *strptr = saferealloc(*strptr,(MEM_SIZE)newlen); |
188 | else |
189 | *strptr = safemalloc((MEM_SIZE)newlen); |
190 | *curlen = newlen; |
191 | } |
192 | } |
193 | |
e50aee73 |
194 | void |
55497cff |
195 | #if defined(I_STDARG) && defined(HAS_VPRINTF) |
196 | croak(char *pat,...) |
197 | #else /* I_STDARG */ |
198 | /*VARARGS1*/ |
a0d0e21e |
199 | croak(pat,a1,a2,a3,a4) |
55497cff |
200 | char *pat; |
201 | int a1,a2,a3,a4; |
202 | #endif /* I_STDARG */ |
a0d0e21e |
203 | { |
55497cff |
204 | #if defined(I_STDARG) && defined(HAS_VPRINTF) |
205 | va_list args; |
206 | |
207 | va_start(args, pat); |
208 | vfprintf(stderr,pat,args); |
209 | #else |
a0d0e21e |
210 | fprintf(stderr,pat,a1,a2,a3,a4); |
55497cff |
211 | #endif |
a0d0e21e |
212 | exit(1); |
213 | } |
214 | |
e50aee73 |
215 | void |
55497cff |
216 | #if defined(I_STDARG) && defined(HAS_VPRINTF) |
217 | fatal(char *pat,...) |
218 | #else /* I_STDARG */ |
219 | /*VARARGS1*/ |
8d063cd8 |
220 | fatal(pat,a1,a2,a3,a4) |
55497cff |
221 | char *pat; |
222 | int a1,a2,a3,a4; |
223 | #endif /* I_STDARG */ |
8d063cd8 |
224 | { |
55497cff |
225 | #if defined(I_STDARG) && defined(HAS_VPRINTF) |
226 | va_list args; |
227 | |
228 | va_start(args, pat); |
229 | vfprintf(stderr,pat,args); |
230 | #else |
8d063cd8 |
231 | fprintf(stderr,pat,a1,a2,a3,a4); |
55497cff |
232 | #endif |
8d063cd8 |
233 | exit(1); |
234 | } |
235 | |
9c8d0b29 |
236 | void |
55497cff |
237 | #if defined(I_STDARG) && defined(HAS_VPRINTF) |
238 | warn(char *pat,...) |
239 | #else /* I_STDARG */ |
240 | /*VARARGS1*/ |
a687059c |
241 | warn(pat,a1,a2,a3,a4) |
55497cff |
242 | char *pat; |
243 | int a1,a2,a3,a4; |
244 | #endif /* I_STDARG */ |
a687059c |
245 | { |
55497cff |
246 | #if defined(I_STDARG) && defined(HAS_VPRINTF) |
247 | va_list args; |
248 | |
249 | va_start(args, pat); |
250 | vfprintf(stderr,pat,args); |
251 | #else |
a687059c |
252 | fprintf(stderr,pat,a1,a2,a3,a4); |
55497cff |
253 | #endif |
a687059c |
254 | } |
255 | |