1 |
/* Copyright (c) 1995 Regents of the University of California */ |
2 |
|
3 |
#ifndef lint |
4 |
static char SCCSid[] = "$SunId$ LBL"; |
5 |
#endif |
6 |
|
7 |
/* |
8 |
* Routines for loading and checking variables from file. |
9 |
*/ |
10 |
|
11 |
#include <stdio.h> |
12 |
#include <ctype.h> |
13 |
#include "vars.h" |
14 |
|
15 |
#define NOCHAR 127 /* constant for character to delete */ |
16 |
|
17 |
#ifndef malloc |
18 |
extern char *malloc(), *realloc(); |
19 |
#endif |
20 |
|
21 |
extern char *fgetline(); |
22 |
|
23 |
|
24 |
loadvars(rfname) /* load variables into vv from file */ |
25 |
char *rfname; |
26 |
{ |
27 |
FILE *fp; |
28 |
char buf[512]; |
29 |
register char *cp; |
30 |
|
31 |
if (rfname == NULL) |
32 |
fp = stdin; |
33 |
else if ((fp = fopen(rfname, "r")) == NULL) { |
34 |
perror(rfname); |
35 |
quit(1); |
36 |
} |
37 |
while (fgetline(buf, sizeof(buf), fp) != NULL) { |
38 |
for (cp = buf; *cp; cp++) { |
39 |
switch (*cp) { |
40 |
case '\\': |
41 |
*cp++ = NOCHAR; |
42 |
continue; |
43 |
case '#': |
44 |
*cp = '\0'; |
45 |
break; |
46 |
default: |
47 |
continue; |
48 |
} |
49 |
break; |
50 |
} |
51 |
if (setvariable(buf, matchvar) < 0) { |
52 |
fprintf(stderr, "%s: unknown variable: %s\n", |
53 |
rfname, buf); |
54 |
quit(1); |
55 |
} |
56 |
} |
57 |
fclose(fp); |
58 |
} |
59 |
|
60 |
|
61 |
int |
62 |
setvariable(ass, mv) /* assign variable according to string */ |
63 |
register char *ass; |
64 |
VARIABLE *(*mv)(); |
65 |
{ |
66 |
char varname[32]; |
67 |
int n; |
68 |
register char *cp; |
69 |
register VARIABLE *vp; |
70 |
register int i; |
71 |
|
72 |
while (isspace(*ass)) /* skip leading space */ |
73 |
ass++; |
74 |
cp = varname; /* extract name */ |
75 |
while (cp < varname+sizeof(varname)-1 |
76 |
&& *ass && !isspace(*ass) && *ass != '=') |
77 |
*cp++ = *ass++; |
78 |
*cp = '\0'; |
79 |
if (!varname[0]) |
80 |
return(0); /* no variable name! */ |
81 |
/* trim value */ |
82 |
while (isspace(*ass) || *ass == '=') |
83 |
ass++; |
84 |
for (n = strlen(ass); n > 0; n--) |
85 |
if (!isspace(ass[n-1])) |
86 |
break; |
87 |
if (!n) |
88 |
return(0); /* no assignment */ |
89 |
/* match variable from list */ |
90 |
vp = (*mv)(varname); |
91 |
if (vp == NULL) |
92 |
return(-1); |
93 |
/* assign new value */ |
94 |
if (i = vp->nass) { |
95 |
cp = vp->value; |
96 |
while (i--) |
97 |
while (*cp++) |
98 |
; |
99 |
i = cp - vp->value; |
100 |
vp->value = realloc(vp->value, i+n+1); |
101 |
} else |
102 |
vp->value = malloc(n+1); |
103 |
if (vp->value == NULL) { |
104 |
perror(progname); |
105 |
quit(1); |
106 |
} |
107 |
cp = vp->value+i; /* copy value, squeezing spaces */ |
108 |
*cp = *ass; |
109 |
for (i = 1; i <= n; i++) { |
110 |
if (ass[i] == NOCHAR) |
111 |
continue; |
112 |
if (isspace(*cp)) |
113 |
while (isspace(ass[i])) |
114 |
i++; |
115 |
*++cp = ass[i]; |
116 |
} |
117 |
if (isspace(*cp)) /* remove trailing space */ |
118 |
*cp = '\0'; |
119 |
return(++vp->nass); |
120 |
} |
121 |
|
122 |
|
123 |
VARIABLE * |
124 |
matchvar(nam) /* match a variable by its name */ |
125 |
char *nam; |
126 |
{ |
127 |
int n = strlen(nam); |
128 |
register int i; |
129 |
|
130 |
for (i = 0; i < NVARS; i++) |
131 |
if (n >= vv[i].nick && !strncmp(nam, vv[i].name, n)) |
132 |
return(vv+i); |
133 |
return(NULL); |
134 |
} |
135 |
|
136 |
|
137 |
char * |
138 |
nvalue(vn, n) /* return nth variable value */ |
139 |
register int vn; |
140 |
register int n; |
141 |
{ |
142 |
register char *cp; |
143 |
|
144 |
if (vval(vn) == NULL | n < 0 | n >= vdef(vn)) |
145 |
return(NULL); |
146 |
cp = vval(vn); |
147 |
while (n--) |
148 |
while (*cp++) |
149 |
; |
150 |
return(cp); |
151 |
} |
152 |
|
153 |
|
154 |
checkvalues() /* check assignments */ |
155 |
{ |
156 |
register int i; |
157 |
|
158 |
for (i = 0; i < NVARS; i++) |
159 |
if (vv[i].fixval != NULL) |
160 |
(*vv[i].fixval)(vv+i); |
161 |
} |
162 |
|
163 |
|
164 |
onevalue(vp) /* only one assignment for this variable */ |
165 |
register VARIABLE *vp; |
166 |
{ |
167 |
if (vp->nass < 2) |
168 |
return; |
169 |
if (!nowarn) |
170 |
fprintf(stderr, |
171 |
"%s: warning - multiple assignment of variable '%s'\n", |
172 |
progname, vp->name); |
173 |
do |
174 |
vp->value += strlen(vp->value)+1; |
175 |
while (--vp->nass > 1); |
176 |
} |
177 |
|
178 |
|
179 |
catvalues(vp) /* concatenate variable values */ |
180 |
register VARIABLE *vp; |
181 |
{ |
182 |
register char *cp; |
183 |
|
184 |
if (vp->nass < 2) |
185 |
return; |
186 |
for (cp = vp->value; vp->nass > 1; vp->nass--) { |
187 |
while (*cp) |
188 |
cp++; |
189 |
*cp++ = ' '; |
190 |
} |
191 |
} |
192 |
|
193 |
|
194 |
int |
195 |
badmatch(tv, cv) /* case insensitive truncated comparison */ |
196 |
register char *tv, *cv; |
197 |
{ |
198 |
if (!*tv) return(1); /* null string cannot match */ |
199 |
do |
200 |
if (UPPER(*tv) != *cv++) |
201 |
return(1); |
202 |
while (*++tv); |
203 |
return(0); /* OK */ |
204 |
} |
205 |
|
206 |
|
207 |
boolvalue(vp) /* check boolean for legal values */ |
208 |
register VARIABLE *vp; |
209 |
{ |
210 |
if (!vp->nass) return; |
211 |
onevalue(vp); |
212 |
switch (UPPER(vp->value[0])) { |
213 |
case 'T': |
214 |
if (badmatch(vp->value, "TRUE")) break; |
215 |
return; |
216 |
case 'F': |
217 |
if (badmatch(vp->value, "FALSE")) break; |
218 |
return; |
219 |
} |
220 |
fprintf(stderr, "%s: illegal value for boolean variable '%s'\n", |
221 |
progname, vp->name); |
222 |
quit(1); |
223 |
} |
224 |
|
225 |
|
226 |
qualvalue(vp) /* check qualitative var. for legal values */ |
227 |
register VARIABLE *vp; |
228 |
{ |
229 |
if (!vp->nass) return; |
230 |
onevalue(vp); |
231 |
switch (UPPER(vp->value[0])) { |
232 |
case 'L': |
233 |
if (badmatch(vp->value, "LOW")) break; |
234 |
return; |
235 |
case 'M': |
236 |
if (badmatch(vp->value, "MEDIUM")) break; |
237 |
return; |
238 |
case 'H': |
239 |
if (badmatch(vp->value, "HIGH")) break; |
240 |
return; |
241 |
} |
242 |
fprintf(stderr, "%s: illegal value for qualitative variable '%s'\n", |
243 |
progname, vp->name); |
244 |
quit(1); |
245 |
} |
246 |
|
247 |
|
248 |
intvalue(vp) /* check integer variable for legal values */ |
249 |
register VARIABLE *vp; |
250 |
{ |
251 |
if (!vp->nass) return; |
252 |
onevalue(vp); |
253 |
if (isint(vp->value)) return; |
254 |
fprintf(stderr, "%s: illegal value for integer variable '%s'\n", |
255 |
progname, vp->name); |
256 |
quit(1); |
257 |
} |
258 |
|
259 |
|
260 |
fltvalue(vp) /* check float variable for legal values */ |
261 |
register VARIABLE *vp; |
262 |
{ |
263 |
if (!vp->nass) return; |
264 |
onevalue(vp); |
265 |
if (isflt(vp->value)) return; |
266 |
fprintf(stderr, "%s: illegal value for real variable '%s'\n", |
267 |
progname, vp->name); |
268 |
quit(1); |
269 |
} |
270 |
|
271 |
|
272 |
printvars(fp) /* print variable values */ |
273 |
register FILE *fp; |
274 |
{ |
275 |
int i, j, k, clipline; |
276 |
register char *cp; |
277 |
|
278 |
for (i = 0; i < NVARS; i++) /* print each variable */ |
279 |
for (j = 0; j < vdef(i); j++) { /* print each assignment */ |
280 |
fputs(vnam(i), fp); |
281 |
fputs("= ", fp); |
282 |
k = clipline = ( vv[i].fixval == catvalues ? 64 : 236 ) |
283 |
- strlen(vnam(i)) ; |
284 |
cp = nvalue(i, j); |
285 |
while (*cp) { |
286 |
putc(*cp++, fp); |
287 |
if (--k <= 0) { /* line too long */ |
288 |
while (*cp && !isspace(*cp)) |
289 |
fputc(*cp++, fp); /* finish this word */ |
290 |
if (*cp) { /* start new line */ |
291 |
if (vv[i].fixval == catvalues) { |
292 |
fputc('\n', fp); |
293 |
fputs(vnam(i), fp); |
294 |
fputc('=', fp); |
295 |
} else |
296 |
fputs(" \\\n", fp); |
297 |
k = clipline; |
298 |
} |
299 |
} |
300 |
} |
301 |
fputc('\n', fp); |
302 |
} |
303 |
fflush(fp); |
304 |
} |