1 |
#ifndef lint |
2 |
static const char RCSid[] = "$Id: rcalc.c,v 1.10 2003/11/06 05:39:33 greg Exp $"; |
3 |
#endif |
4 |
/* |
5 |
* rcalc.c - record calculator program. |
6 |
* |
7 |
* 9/11/87 |
8 |
*/ |
9 |
|
10 |
#include <stdlib.h> |
11 |
#include <fcntl.h> |
12 |
#include <stdio.h> |
13 |
#include <string.h> |
14 |
#include <math.h> |
15 |
#include <ctype.h> |
16 |
|
17 |
#include "platform.h" |
18 |
#include "calcomp.h" |
19 |
#include "rterror.h" |
20 |
|
21 |
#define isnum(c) (isdigit(c) || (c)=='-' || (c)=='.' \ |
22 |
|| (c)=='+' || (c)=='e' || (c)=='E') |
23 |
|
24 |
#define isblnk(c) (igneol ? isspace(c) : (c)==' '||(c)=='\t') |
25 |
|
26 |
#define INBSIZ 4096 /* longest record */ |
27 |
#define MAXCOL 32 /* number of columns recorded */ |
28 |
|
29 |
/* field type specifications */ |
30 |
#define F_NUL 0 /* empty */ |
31 |
#define F_TYP 0x7000 /* mask for type */ |
32 |
#define F_WID 0x0fff /* mask for width */ |
33 |
#define T_LIT 0x1000 /* string literal */ |
34 |
#define T_STR 0x2000 /* string variable */ |
35 |
#define T_NUM 0x3000 /* numeric value */ |
36 |
|
37 |
struct strvar { /* string variable */ |
38 |
char *name; |
39 |
char *val; |
40 |
char *preset; |
41 |
struct strvar *next; |
42 |
}; |
43 |
|
44 |
struct field { /* record format structure */ |
45 |
int type; /* type of field (& width) */ |
46 |
union { |
47 |
char *sl; /* string literal */ |
48 |
struct strvar *sv; /* string variable */ |
49 |
char *nv; /* numeric variable */ |
50 |
EPNODE *ne; /* numeric expression */ |
51 |
} f; /* field contents */ |
52 |
struct field *next; /* next field in record */ |
53 |
}; |
54 |
|
55 |
#define savqstr(s) strcpy(emalloc(strlen(s)+1),s) |
56 |
#define freqstr(s) efree(s) |
57 |
|
58 |
static int getinputrec(FILE *fp); |
59 |
static void scaninp(void), advinp(void), resetinp(void); |
60 |
static void putrec(void), putout(void), nbsynch(void); |
61 |
static int getrec(void); |
62 |
static void execute(char *file); |
63 |
static void initinp(FILE *fp); |
64 |
static void svpreset(char *eqn); |
65 |
static void readfmt(char *spec, int output); |
66 |
static int readfield(char **pp); |
67 |
static int getfield(struct field *f); |
68 |
static void chanset(int n, double v); |
69 |
static void bchanset(int n, double v); |
70 |
static struct strvar* getsvar(char *svname); |
71 |
static double l_in(char *); |
72 |
|
73 |
struct field *inpfmt = NULL; /* input record format */ |
74 |
struct field *outfmt = NULL; /* output record structure */ |
75 |
struct strvar *svhead = NULL; /* string variables */ |
76 |
|
77 |
int blnkeq = 1; /* blanks compare equal? */ |
78 |
int igneol = 0; /* ignore end of line? */ |
79 |
char sepchar = '\t'; /* input/output separator */ |
80 |
int noinput = 0; /* no input records? */ |
81 |
int nbicols = 0; /* number of binary input columns */ |
82 |
int bocols = 0; /* produce binary output columns */ |
83 |
char inpbuf[INBSIZ]; /* input buffer */ |
84 |
double colval[MAXCOL]; /* input column values */ |
85 |
unsigned long colflg = 0; /* column retrieved flags */ |
86 |
int colpos; /* output column position */ |
87 |
|
88 |
int nowarn = 0; /* non-fatal diagnostic output */ |
89 |
int unbuff = 0; /* unbuffered output (flush each record) */ |
90 |
|
91 |
struct { |
92 |
FILE *fin; /* input file */ |
93 |
int chr; /* next character */ |
94 |
char *beg; /* home position */ |
95 |
char *pos; /* scan position */ |
96 |
char *end; /* read position */ |
97 |
} ipb; /* circular lookahead buffer */ |
98 |
|
99 |
|
100 |
int |
101 |
main( |
102 |
int argc, |
103 |
char *argv[] |
104 |
) |
105 |
{ |
106 |
int i; |
107 |
|
108 |
esupport |= E_VARIABLE|E_FUNCTION|E_INCHAN|E_OUTCHAN|E_RCONST; |
109 |
esupport &= ~(E_REDEFW); |
110 |
|
111 |
#ifdef BIGGERLIB |
112 |
biggerlib(); |
113 |
#endif |
114 |
varset("PI", ':', 3.14159265358979323846); |
115 |
funset("in", 1, '=', &l_in); |
116 |
|
117 |
for (i = 1; i < argc && argv[i][0] == '-'; i++) |
118 |
switch (argv[i][1]) { |
119 |
case 'b': |
120 |
blnkeq = !blnkeq; |
121 |
break; |
122 |
case 'l': |
123 |
igneol = !igneol; |
124 |
break; |
125 |
case 't': |
126 |
sepchar = argv[i][2]; |
127 |
break; |
128 |
case 's': |
129 |
svpreset(argv[++i]); |
130 |
break; |
131 |
case 'f': |
132 |
fcompile(argv[++i]); |
133 |
break; |
134 |
case 'e': |
135 |
scompile(argv[++i], NULL, 0); |
136 |
break; |
137 |
case 'n': |
138 |
noinput = 1; |
139 |
break; |
140 |
case 'i': |
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switch (argv[i][2]) { |
142 |
case '\0': |
143 |
nbicols = 0; |
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readfmt(argv[++i], 0); |
145 |
break; |
146 |
case 'a': |
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nbicols = 0; |
148 |
break; |
149 |
case 'd': |
150 |
if (isdigit(argv[i][3])) |
151 |
nbicols = atoi(argv[i]+3); |
152 |
else |
153 |
nbicols = 1; |
154 |
if (nbicols*sizeof(double) > INBSIZ) { |
155 |
eputs(argv[0]); |
156 |
eputs(": too many input columns\n"); |
157 |
quit(1); |
158 |
} |
159 |
break; |
160 |
case 'f': |
161 |
if (isdigit(argv[i][3])) |
162 |
nbicols = -atoi(argv[i]+3); |
163 |
else |
164 |
nbicols = -1; |
165 |
if (-nbicols*sizeof(float) > INBSIZ) { |
166 |
eputs(argv[0]); |
167 |
eputs(": too many input columns\n"); |
168 |
quit(1); |
169 |
} |
170 |
break; |
171 |
default: |
172 |
goto userr; |
173 |
} |
174 |
break; |
175 |
case 'o': |
176 |
switch (argv[i][2]) { |
177 |
case '\0': |
178 |
bocols = 0; |
179 |
readfmt(argv[++i], 1); |
180 |
break; |
181 |
case 'a': |
182 |
bocols = 0; |
183 |
break; |
184 |
case 'd': |
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bocols = 1; |
186 |
break; |
187 |
case 'f': |
188 |
bocols = -1; |
189 |
break; |
190 |
} |
191 |
break; |
192 |
case 'w': |
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nowarn = !nowarn; |
194 |
break; |
195 |
case 'u': |
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unbuff = !unbuff; |
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break; |
198 |
default:; |
199 |
userr: |
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eputs("Usage: "); |
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eputs(argv[0]); |
202 |
eputs(" [-b][-l][-n][-w][-u][-tS][-s svar=sval][-e expr][-f source][-i infmt][-o outfmt] [file]\n"); |
203 |
quit(1); |
204 |
} |
205 |
|
206 |
if (noinput) { /* produce a single output record */ |
207 |
eclock++; |
208 |
putout(); |
209 |
quit(0); |
210 |
} |
211 |
|
212 |
if (blnkeq) /* for efficiency */ |
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nbsynch(); |
214 |
|
215 |
if (i == argc) /* from stdin */ |
216 |
execute(NULL); |
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else /* from one or more files */ |
218 |
for ( ; i < argc; i++) |
219 |
execute(argv[i]); |
220 |
|
221 |
quit(0); |
222 |
return 0; /* pro forma return */ |
223 |
} |
224 |
|
225 |
|
226 |
static void |
227 |
nbsynch(void) /* non-blank starting synch character */ |
228 |
{ |
229 |
if (inpfmt == NULL || (inpfmt->type & F_TYP) != T_LIT) |
230 |
return; |
231 |
while (isblnk(*inpfmt->f.sl)) |
232 |
inpfmt->f.sl++; |
233 |
if (!*inpfmt->f.sl) |
234 |
inpfmt = inpfmt->next; |
235 |
} |
236 |
|
237 |
|
238 |
static int |
239 |
getinputrec( /* get next input record */ |
240 |
FILE *fp |
241 |
) |
242 |
{ |
243 |
if (inpfmt != NULL) |
244 |
return(getrec()); |
245 |
if (nbicols > 0) |
246 |
return(fread(inpbuf, sizeof(double), |
247 |
nbicols, fp) == nbicols); |
248 |
if (nbicols < 0) |
249 |
return(fread(inpbuf, sizeof(float), |
250 |
-nbicols, fp) == -nbicols); |
251 |
return(fgets(inpbuf, INBSIZ, fp) != NULL); |
252 |
} |
253 |
|
254 |
|
255 |
static void |
256 |
execute( /* process a file */ |
257 |
char *file |
258 |
) |
259 |
{ |
260 |
int conditional = vardefined("cond"); |
261 |
long nrecs = 0; |
262 |
long nout = 0; |
263 |
FILE *fp; |
264 |
|
265 |
if (file == NULL) |
266 |
fp = stdin; |
267 |
else if ((fp = fopen(file, "r")) == NULL) { |
268 |
eputs(file); |
269 |
eputs(": cannot open\n"); |
270 |
quit(1); |
271 |
} |
272 |
if (inpfmt != NULL) |
273 |
initinp(fp); |
274 |
|
275 |
while (getinputrec(fp)) { |
276 |
varset("recno", '=', (double)++nrecs); |
277 |
colflg = 0; |
278 |
eclock++; |
279 |
if (!conditional || varvalue("cond") > 0.0) { |
280 |
varset("outno", '=', (double)++nout); |
281 |
putout(); |
282 |
} |
283 |
} |
284 |
fclose(fp); |
285 |
} |
286 |
|
287 |
|
288 |
static void |
289 |
putout(void) /* produce an output record */ |
290 |
{ |
291 |
|
292 |
colpos = 0; |
293 |
if (outfmt != NULL) |
294 |
putrec(); |
295 |
else if (bocols) |
296 |
chanout(bchanset); |
297 |
else |
298 |
chanout(chanset); |
299 |
if (colpos && !bocols) |
300 |
putchar('\n'); |
301 |
if (unbuff) |
302 |
fflush(stdout); |
303 |
} |
304 |
|
305 |
|
306 |
static double |
307 |
l_in(char *funame) /* function call for $channel */ |
308 |
{ |
309 |
int n; |
310 |
register char *cp; |
311 |
/* get argument as integer */ |
312 |
n = (int)(argument(1) + .5); |
313 |
if (n != 0) /* return channel value */ |
314 |
return(chanvalue(n)); |
315 |
/* determine number of channels */ |
316 |
if (noinput || inpfmt != NULL) |
317 |
return(0); |
318 |
if (nbicols > 0) |
319 |
return(nbicols); |
320 |
if (nbicols < 0) |
321 |
return(-nbicols); |
322 |
cp = inpbuf; /* need to count */ |
323 |
for (n = 0; *cp; ) |
324 |
if (blnkeq && isspace(sepchar)) { |
325 |
while (isspace(*cp)) |
326 |
cp++; |
327 |
n += *cp != '\0'; |
328 |
while (*cp && !isspace(*cp)) |
329 |
cp++; |
330 |
} else { |
331 |
n += *cp != '\n'; |
332 |
while (*cp && *cp++ != sepchar) |
333 |
; |
334 |
} |
335 |
return(n); |
336 |
} |
337 |
|
338 |
double |
339 |
chanvalue( /* return value for column n */ |
340 |
int n |
341 |
) |
342 |
{ |
343 |
int i; |
344 |
register char *cp; |
345 |
|
346 |
if (noinput || inpfmt != NULL) { |
347 |
eputs("no column input\n"); |
348 |
quit(1); |
349 |
} |
350 |
if (n < 1) { |
351 |
eputs("illegal channel number\n"); |
352 |
quit(1); |
353 |
} |
354 |
if (nbicols > 0) { |
355 |
if (n > nbicols) |
356 |
return(0.0); |
357 |
cp = inpbuf + (n-1)*sizeof(double); |
358 |
return(*(double *)cp); |
359 |
} |
360 |
if (nbicols < 0) { |
361 |
if (n > -nbicols) |
362 |
return(0.0); |
363 |
cp = inpbuf + (n-1)*sizeof(float); |
364 |
return(*(float *)cp); |
365 |
} |
366 |
if (n <= MAXCOL && colflg & 1L<<(n-1)) |
367 |
return(colval[n-1]); |
368 |
|
369 |
cp = inpbuf; |
370 |
for (i = 1; i < n; i++) |
371 |
if (blnkeq && isspace(sepchar)) { |
372 |
while (isspace(*cp)) |
373 |
cp++; |
374 |
while (*cp && !isspace(*cp)) |
375 |
cp++; |
376 |
} else |
377 |
while (*cp && *cp++ != sepchar) |
378 |
; |
379 |
|
380 |
while (isspace(*cp)) /* some atof()'s don't like tabs */ |
381 |
cp++; |
382 |
|
383 |
if (n <= MAXCOL) { |
384 |
colflg |= 1L<<(n-1); |
385 |
return(colval[n-1] = atof(cp)); |
386 |
} else |
387 |
return(atof(cp)); |
388 |
} |
389 |
|
390 |
|
391 |
void |
392 |
chanset( /* output column n */ |
393 |
int n, |
394 |
double v |
395 |
) |
396 |
{ |
397 |
if (colpos == 0) /* no leading separator */ |
398 |
colpos = 1; |
399 |
while (colpos < n) { |
400 |
putchar(sepchar); |
401 |
colpos++; |
402 |
} |
403 |
printf("%.9g", v); |
404 |
} |
405 |
|
406 |
|
407 |
void |
408 |
bchanset( /* output binary channel n */ |
409 |
int n, |
410 |
double v |
411 |
) |
412 |
{ |
413 |
static char zerobuf[sizeof(double)]; |
414 |
|
415 |
while (++colpos < n) |
416 |
fwrite(zerobuf, |
417 |
bocols>0 ? sizeof(double) : sizeof(float), |
418 |
1, stdout); |
419 |
if (bocols > 0) |
420 |
fwrite(&v, sizeof(double), 1, stdout); |
421 |
else { |
422 |
float fval = v; |
423 |
fwrite(&fval, sizeof(float), 1, stdout); |
424 |
} |
425 |
} |
426 |
|
427 |
|
428 |
static void |
429 |
readfmt( /* read record format */ |
430 |
char *spec, |
431 |
int output |
432 |
) |
433 |
{ |
434 |
int fd; |
435 |
char *inptr; |
436 |
struct field fmt; |
437 |
int res; |
438 |
register struct field *f; |
439 |
/* check for inline format */ |
440 |
for (inptr = spec; *inptr; inptr++) |
441 |
if (*inptr == '$') |
442 |
break; |
443 |
if (*inptr) /* inline */ |
444 |
inptr = spec; |
445 |
else { /* from file */ |
446 |
if ((fd = open(spec, 0)) == -1) { |
447 |
eputs(spec); |
448 |
eputs(": cannot open\n"); |
449 |
quit(1); |
450 |
} |
451 |
res = read(fd, inpbuf+1, INBSIZ-1); |
452 |
if (res <= 0 || res >= INBSIZ-1) { |
453 |
eputs(spec); |
454 |
if (res < 0) |
455 |
eputs(": read error\n"); |
456 |
else if (res == 0) |
457 |
eputs(": empty file\n"); |
458 |
else if (res >= INBSIZ-1) |
459 |
eputs(": format too long\n"); |
460 |
quit(1); |
461 |
} |
462 |
close(fd); |
463 |
(inptr=inpbuf+1)[res] = '\0'; |
464 |
} |
465 |
f = &fmt; /* get fields */ |
466 |
while ((res = readfield(&inptr)) != F_NUL) { |
467 |
f->next = (struct field *)emalloc(sizeof(struct field)); |
468 |
f = f->next; |
469 |
f->type = res; |
470 |
switch (res & F_TYP) { |
471 |
case T_LIT: |
472 |
f->f.sl = savqstr(inpbuf); |
473 |
break; |
474 |
case T_STR: |
475 |
f->f.sv = getsvar(inpbuf); |
476 |
break; |
477 |
case T_NUM: |
478 |
if (output) |
479 |
f->f.ne = eparse(inpbuf); |
480 |
else |
481 |
f->f.nv = savestr(inpbuf); |
482 |
break; |
483 |
} |
484 |
/* add final newline if necessary */ |
485 |
if (!igneol && *inptr == '\0' && inptr[-1] != '\n') |
486 |
inptr = "\n"; |
487 |
} |
488 |
f->next = NULL; |
489 |
if (output) |
490 |
outfmt = fmt.next; |
491 |
else |
492 |
inpfmt = fmt.next; |
493 |
} |
494 |
|
495 |
|
496 |
static int |
497 |
readfield( /* get next field in format */ |
498 |
register char **pp |
499 |
) |
500 |
{ |
501 |
int type = F_NUL; |
502 |
int width = 0; |
503 |
register char *cp; |
504 |
|
505 |
cp = inpbuf; |
506 |
while (cp < &inpbuf[INBSIZ-1] && **pp != '\0') { |
507 |
width++; |
508 |
switch (type) { |
509 |
case F_NUL: |
510 |
if (**pp == '$') { |
511 |
(*pp)++; |
512 |
width++; |
513 |
if (**pp == '{') { |
514 |
type = T_NUM; |
515 |
(*pp)++; |
516 |
continue; |
517 |
} else if (**pp == '(') { |
518 |
type = T_STR; |
519 |
(*pp)++; |
520 |
continue; |
521 |
} else if (**pp != '$') { |
522 |
eputs("format error\n"); |
523 |
quit(1); |
524 |
} |
525 |
width--; |
526 |
} |
527 |
type = T_LIT; |
528 |
*cp++ = *(*pp)++; |
529 |
continue; |
530 |
case T_LIT: |
531 |
if (**pp == '$') { |
532 |
width--; |
533 |
break; |
534 |
} |
535 |
*cp++ = *(*pp)++; |
536 |
continue; |
537 |
case T_NUM: |
538 |
if (**pp == '}') { |
539 |
(*pp)++; |
540 |
break; |
541 |
} |
542 |
if (!isspace(**pp)) |
543 |
*cp++ = **pp; |
544 |
(*pp)++; |
545 |
continue; |
546 |
case T_STR: |
547 |
if (**pp == ')') { |
548 |
(*pp)++; |
549 |
break; |
550 |
} |
551 |
if (!isspace(**pp)) |
552 |
*cp++ = **pp; |
553 |
(*pp)++; |
554 |
continue; |
555 |
} |
556 |
break; |
557 |
} |
558 |
*cp = '\0'; |
559 |
return(type | width); |
560 |
} |
561 |
|
562 |
|
563 |
struct strvar * |
564 |
getsvar( /* get string variable */ |
565 |
char *svname |
566 |
) |
567 |
{ |
568 |
register struct strvar *sv; |
569 |
|
570 |
for (sv = svhead; sv != NULL; sv = sv->next) |
571 |
if (!strcmp(sv->name, svname)) |
572 |
return(sv); |
573 |
sv = (struct strvar *)emalloc(sizeof(struct strvar)); |
574 |
sv->name = savqstr(svname); |
575 |
sv->val = sv->preset = NULL; |
576 |
sv->next = svhead; |
577 |
svhead = sv; |
578 |
return(sv); |
579 |
} |
580 |
|
581 |
|
582 |
static void |
583 |
svpreset( /* preset a string variable */ |
584 |
char *eqn |
585 |
) |
586 |
{ |
587 |
register struct strvar *sv; |
588 |
register char *val; |
589 |
|
590 |
for (val = eqn; *val != '='; val++) |
591 |
if (!*val) |
592 |
return; |
593 |
*val++ = '\0'; |
594 |
sv = getsvar(eqn); |
595 |
if (sv->preset != NULL) |
596 |
freqstr(sv->preset); |
597 |
if (sv->val != NULL) |
598 |
freqstr(sv->val); |
599 |
sv->val = sv->preset = savqstr(val); |
600 |
*--val = '='; |
601 |
} |
602 |
|
603 |
|
604 |
static void |
605 |
clearrec(void) /* clear input record variables */ |
606 |
{ |
607 |
register struct field *f; |
608 |
|
609 |
for (f = inpfmt; f != NULL; f = f->next) |
610 |
switch (f->type & F_TYP) { |
611 |
case T_NUM: |
612 |
dremove(f->f.nv); |
613 |
break; |
614 |
case T_STR: |
615 |
if (f->f.sv->val != f->f.sv->preset) { |
616 |
freqstr(f->f.sv->val); |
617 |
f->f.sv->val = f->f.sv->preset; |
618 |
} |
619 |
break; |
620 |
} |
621 |
} |
622 |
|
623 |
|
624 |
static int |
625 |
getrec(void) /* get next record from file */ |
626 |
{ |
627 |
int eatline; |
628 |
register struct field *f; |
629 |
|
630 |
while (ipb.chr != EOF) { |
631 |
eatline = !igneol && ipb.chr != '\n'; |
632 |
if (blnkeq) /* beware of nbsynch() */ |
633 |
while (isblnk(ipb.chr)) |
634 |
scaninp(); |
635 |
clearrec(); /* start with fresh record */ |
636 |
for (f = inpfmt; f != NULL; f = f->next) |
637 |
if (getfield(f) == -1) |
638 |
break; |
639 |
if (f == NULL) { |
640 |
advinp(); |
641 |
return(1); |
642 |
} |
643 |
resetinp(); |
644 |
if (eatline) { /* eat rest of line */ |
645 |
while (ipb.chr != '\n') { |
646 |
if (ipb.chr == EOF) |
647 |
return(0); |
648 |
scaninp(); |
649 |
} |
650 |
scaninp(); |
651 |
advinp(); |
652 |
} |
653 |
} |
654 |
return(0); |
655 |
} |
656 |
|
657 |
|
658 |
static int |
659 |
getfield( /* get next field */ |
660 |
register struct field *f |
661 |
) |
662 |
{ |
663 |
static char buf[RMAXWORD+1]; /* no recursion! */ |
664 |
int delim, inword; |
665 |
double d; |
666 |
char *np; |
667 |
register char *cp; |
668 |
|
669 |
switch (f->type & F_TYP) { |
670 |
case T_LIT: |
671 |
cp = f->f.sl; |
672 |
do { |
673 |
if (blnkeq && isblnk(*cp)) { |
674 |
if (!isblnk(ipb.chr)) |
675 |
return(-1); |
676 |
do |
677 |
cp++; |
678 |
while (isblnk(*cp)); |
679 |
do |
680 |
scaninp(); |
681 |
while (isblnk(ipb.chr)); |
682 |
} else if (*cp == ipb.chr) { |
683 |
cp++; |
684 |
scaninp(); |
685 |
} else |
686 |
return(-1); |
687 |
} while (*cp); |
688 |
return(0); |
689 |
case T_STR: |
690 |
if (f->next == NULL || (f->next->type & F_TYP) != T_LIT) |
691 |
delim = EOF; |
692 |
else |
693 |
delim = f->next->f.sl[0]; |
694 |
cp = buf; |
695 |
do { |
696 |
if (ipb.chr == EOF || ipb.chr == '\n') |
697 |
inword = 0; |
698 |
else if (blnkeq && delim != EOF) |
699 |
inword = isblnk(delim) ? |
700 |
!isblnk(ipb.chr) |
701 |
: ipb.chr != delim; |
702 |
else |
703 |
inword = cp-buf < (f->type & F_WID); |
704 |
if (inword) { |
705 |
*cp++ = ipb.chr; |
706 |
scaninp(); |
707 |
} |
708 |
} while (inword && cp < &buf[RMAXWORD]); |
709 |
*cp = '\0'; |
710 |
if (f->f.sv->val == NULL) |
711 |
f->f.sv->val = savqstr(buf); /* first setting */ |
712 |
else if (strcmp(f->f.sv->val, buf)) |
713 |
return(-1); /* doesn't match! */ |
714 |
return(0); |
715 |
case T_NUM: |
716 |
if (f->next == NULL || (f->next->type & F_TYP) != T_LIT) |
717 |
delim = EOF; |
718 |
else |
719 |
delim = f->next->f.sl[0]; |
720 |
np = NULL; |
721 |
cp = buf; |
722 |
do { |
723 |
if (!((np==NULL&&isblnk(ipb.chr)) || isnum(ipb.chr))) |
724 |
inword = 0; |
725 |
else if (blnkeq && delim != EOF) |
726 |
inword = isblnk(delim) ? |
727 |
!isblnk(ipb.chr) |
728 |
: ipb.chr != delim; |
729 |
else |
730 |
inword = cp-buf < (f->type & F_WID); |
731 |
if (inword) { |
732 |
if (np==NULL && !isblnk(ipb.chr)) |
733 |
np = cp; |
734 |
*cp++ = ipb.chr; |
735 |
scaninp(); |
736 |
} |
737 |
} while (inword && cp < &buf[RMAXWORD]); |
738 |
*cp = '\0'; |
739 |
d = np==NULL ? 0. : atof(np); |
740 |
if (!vardefined(f->f.nv)) |
741 |
varset(f->f.nv, '=', d); /* first setting */ |
742 |
else if ((d = (varvalue(f->f.nv)-d)/(d==0.?1.:d)) > .001 |
743 |
|| d < -.001) |
744 |
return(-1); /* doesn't match! */ |
745 |
return(0); |
746 |
} |
747 |
return -1; /* pro forma return */ |
748 |
} |
749 |
|
750 |
|
751 |
static void |
752 |
putrec(void) /* output a record */ |
753 |
{ |
754 |
char fmt[32]; |
755 |
register int n; |
756 |
register struct field *f; |
757 |
int adlast, adnext; |
758 |
|
759 |
adlast = 0; |
760 |
for (f = outfmt; f != NULL; f = f->next) { |
761 |
adnext = blnkeq && |
762 |
f->next != NULL && |
763 |
!( (f->next->type&F_TYP) == T_LIT && |
764 |
f->next->f.sl[0] == ' ' ); |
765 |
switch (f->type & F_TYP) { |
766 |
case T_LIT: |
767 |
fputs(f->f.sl, stdout); |
768 |
adlast = f->f.sl[(f->type&F_WID)-1] != ' '; |
769 |
break; |
770 |
case T_STR: |
771 |
if (f->f.sv->val == NULL) { |
772 |
eputs(f->f.sv->name); |
773 |
eputs(": undefined string\n"); |
774 |
quit(1); |
775 |
} |
776 |
n = (int)(f->type & F_WID) - strlen(f->f.sv->val); |
777 |
if (adlast) |
778 |
fputs(f->f.sv->val, stdout); |
779 |
if (!(adlast && adnext)) |
780 |
while (n-- > 0) |
781 |
putchar(' '); |
782 |
if (!adlast) |
783 |
fputs(f->f.sv->val, stdout); |
784 |
adlast = 1; |
785 |
break; |
786 |
case T_NUM: |
787 |
n = f->type & F_WID; |
788 |
if (adlast && adnext) |
789 |
strcpy(fmt, "%g"); |
790 |
else if (adlast) |
791 |
sprintf(fmt, "%%-%dg", n); |
792 |
else |
793 |
sprintf(fmt, "%%%dg", n); |
794 |
printf(fmt, evalue(f->f.ne)); |
795 |
adlast = 1; |
796 |
break; |
797 |
} |
798 |
} |
799 |
} |
800 |
|
801 |
|
802 |
static void |
803 |
initinp(FILE *fp) /* prepare lookahead buffer */ |
804 |
|
805 |
{ |
806 |
ipb.fin = fp; |
807 |
ipb.beg = ipb.end = inpbuf; |
808 |
ipb.pos = inpbuf-1; /* position before beginning */ |
809 |
ipb.chr = '\0'; |
810 |
scaninp(); |
811 |
} |
812 |
|
813 |
|
814 |
static void |
815 |
scaninp(void) /* scan next character */ |
816 |
{ |
817 |
if (ipb.chr == EOF) |
818 |
return; |
819 |
if (++ipb.pos >= &inpbuf[INBSIZ]) |
820 |
ipb.pos = inpbuf; |
821 |
if (ipb.pos == ipb.end) { /* new character */ |
822 |
if ((ipb.chr = getc(ipb.fin)) != EOF) { |
823 |
*ipb.end = ipb.chr; |
824 |
if (++ipb.end >= &inpbuf[INBSIZ]) |
825 |
ipb.end = inpbuf; |
826 |
if (ipb.end == ipb.beg) |
827 |
ipb.beg = NULL; |
828 |
} |
829 |
} else |
830 |
ipb.chr = *ipb.pos; |
831 |
} |
832 |
|
833 |
|
834 |
static void |
835 |
advinp(void) /* move home to current position */ |
836 |
{ |
837 |
ipb.beg = ipb.pos; |
838 |
} |
839 |
|
840 |
|
841 |
static void |
842 |
resetinp(void) /* rewind position and advance 1 */ |
843 |
{ |
844 |
if (ipb.beg == NULL) /* full */ |
845 |
ipb.beg = ipb.end; |
846 |
ipb.pos = ipb.beg; |
847 |
ipb.chr = *ipb.pos; |
848 |
if (++ipb.beg >= &inpbuf[INBSIZ]) |
849 |
ipb.beg = inpbuf; |
850 |
scaninp(); |
851 |
} |
852 |
|
853 |
|
854 |
void |
855 |
eputs(char *msg) |
856 |
{ |
857 |
fputs(msg, stderr); |
858 |
} |
859 |
|
860 |
|
861 |
void |
862 |
wputs(char *msg) |
863 |
{ |
864 |
if (!nowarn) |
865 |
eputs(msg); |
866 |
} |
867 |
|
868 |
|
869 |
void |
870 |
quit(int code) |
871 |
{ |
872 |
exit(code); |
873 |
} |