| 1 |
#ifndef lint
|
| 2 |
static const char RCSid[] = "$Id: rcalc.c,v 1.24 2014/05/10 01:27:14 greg Exp $";
|
| 3 |
#endif
|
| 4 |
/*
|
| 5 |
* rcalc.c - record calculator program.
|
| 6 |
*
|
| 7 |
* 9/11/87
|
| 8 |
*/
|
| 9 |
|
| 10 |
#include <stdlib.h>
|
| 11 |
#include <math.h>
|
| 12 |
#include <ctype.h>
|
| 13 |
|
| 14 |
#include "platform.h"
|
| 15 |
#include "rterror.h"
|
| 16 |
#include "rtmisc.h"
|
| 17 |
#include "rtio.h"
|
| 18 |
#include "calcomp.h"
|
| 19 |
|
| 20 |
#define isnum(c) (isdigit(c) || (c)=='-' || (c)=='.' \
|
| 21 |
|| (c)=='+' || (c)=='e' || (c)=='E')
|
| 22 |
|
| 23 |
#define isblnk(c) (igneol ? isspace(c) : (c)==' '||(c)=='\t')
|
| 24 |
|
| 25 |
#define INBSIZ 16384 /* longest record */
|
| 26 |
#define MAXCOL 32 /* number of columns recorded */
|
| 27 |
|
| 28 |
/* field type specifications */
|
| 29 |
#define F_NUL 0 /* empty */
|
| 30 |
#define F_TYP 0x7000 /* mask for type */
|
| 31 |
#define F_WID 0x0fff /* mask for width */
|
| 32 |
#define T_LIT 0x1000 /* string literal */
|
| 33 |
#define T_STR 0x2000 /* string variable */
|
| 34 |
#define T_NUM 0x3000 /* numeric value */
|
| 35 |
|
| 36 |
struct strvar { /* string variable */
|
| 37 |
char *name;
|
| 38 |
char *val;
|
| 39 |
char *preset;
|
| 40 |
struct strvar *next;
|
| 41 |
};
|
| 42 |
|
| 43 |
struct field { /* record format structure */
|
| 44 |
int type; /* type of field (& width) */
|
| 45 |
union {
|
| 46 |
char *sl; /* string literal */
|
| 47 |
struct strvar *sv; /* string variable */
|
| 48 |
char *nv; /* numeric variable */
|
| 49 |
EPNODE *ne; /* numeric expression */
|
| 50 |
} f; /* field contents */
|
| 51 |
struct field *next; /* next field in record */
|
| 52 |
};
|
| 53 |
|
| 54 |
#define savqstr(s) strcpy(emalloc(strlen(s)+1),s)
|
| 55 |
#define freqstr(s) efree(s)
|
| 56 |
|
| 57 |
static int getinputrec(FILE *fp);
|
| 58 |
static void scaninp(void), advinp(void), resetinp(void);
|
| 59 |
static void putrec(void), putout(void), nbsynch(void);
|
| 60 |
static int getrec(void);
|
| 61 |
static void execute(char *file);
|
| 62 |
static void initinp(FILE *fp);
|
| 63 |
static void svpreset(char *eqn);
|
| 64 |
static void readfmt(char *spec, int output);
|
| 65 |
static int readfield(char **pp);
|
| 66 |
static int getfield(struct field *f);
|
| 67 |
static void chanset(int n, double v);
|
| 68 |
static void bchanset(int n, double v);
|
| 69 |
static struct strvar* getsvar(char *svname);
|
| 70 |
static double l_in(char *);
|
| 71 |
|
| 72 |
struct field *inpfmt = NULL; /* input record format */
|
| 73 |
struct field *outfmt = NULL; /* output record structure */
|
| 74 |
struct strvar *svhead = NULL; /* string variables */
|
| 75 |
|
| 76 |
int blnkeq = 1; /* blanks compare equal? */
|
| 77 |
int igneol = 0; /* ignore end of line? */
|
| 78 |
int passive = 0; /* passive mode (transmit unmatched input) */
|
| 79 |
char sepchar = '\t'; /* input/output separator */
|
| 80 |
int noinput = 0; /* no input records? */
|
| 81 |
int itype = 'a'; /* input type (a/f/F/d/D) */
|
| 82 |
int nbicols = 0; /* number of binary input columns */
|
| 83 |
int otype = 'a'; /* output format (a/f/F/d/D) */
|
| 84 |
char inpbuf[INBSIZ]; /* input buffer */
|
| 85 |
double colval[MAXCOL]; /* input column values */
|
| 86 |
unsigned long colflg = 0; /* column retrieved flags */
|
| 87 |
int colpos; /* output column position */
|
| 88 |
|
| 89 |
int nowarn = 0; /* non-fatal diagnostic output */
|
| 90 |
int unbuff = 0; /* unbuffered output (flush each record) */
|
| 91 |
|
| 92 |
struct {
|
| 93 |
FILE *fin; /* input file */
|
| 94 |
int chr; /* next character */
|
| 95 |
char *beg; /* home position */
|
| 96 |
char *pos; /* scan position */
|
| 97 |
char *end; /* read position */
|
| 98 |
} ipb; /* circular lookahead buffer */
|
| 99 |
|
| 100 |
|
| 101 |
int
|
| 102 |
main(
|
| 103 |
int argc,
|
| 104 |
char *argv[]
|
| 105 |
)
|
| 106 |
{
|
| 107 |
char *fpath;
|
| 108 |
int i;
|
| 109 |
|
| 110 |
esupport |= E_VARIABLE|E_FUNCTION|E_INCHAN|E_OUTCHAN|E_RCONST;
|
| 111 |
esupport &= ~(E_REDEFW);
|
| 112 |
|
| 113 |
#ifdef BIGGERLIB
|
| 114 |
biggerlib();
|
| 115 |
#endif
|
| 116 |
varset("PI", ':', 3.14159265358979323846);
|
| 117 |
funset("in", 1, '=', &l_in);
|
| 118 |
|
| 119 |
for (i = 1; i < argc && argv[i][0] == '-'; i++)
|
| 120 |
switch (argv[i][1]) {
|
| 121 |
case 'b':
|
| 122 |
blnkeq = !blnkeq;
|
| 123 |
break;
|
| 124 |
case 'l':
|
| 125 |
igneol = !igneol;
|
| 126 |
break;
|
| 127 |
case 'p':
|
| 128 |
passive = !passive;
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| 129 |
break;
|
| 130 |
case 't':
|
| 131 |
sepchar = argv[i][2];
|
| 132 |
break;
|
| 133 |
case 's':
|
| 134 |
svpreset(argv[++i]);
|
| 135 |
break;
|
| 136 |
case 'f':
|
| 137 |
fpath = getpath(argv[++i], getrlibpath(), 0);
|
| 138 |
if (fpath == NULL) {
|
| 139 |
eputs(argv[0]);
|
| 140 |
eputs(": cannot find file '");
|
| 141 |
eputs(argv[i]);
|
| 142 |
eputs("'\n");
|
| 143 |
quit(1);
|
| 144 |
}
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| 145 |
fcompile(fpath);
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| 146 |
break;
|
| 147 |
case 'e':
|
| 148 |
scompile(argv[++i], NULL, 0);
|
| 149 |
break;
|
| 150 |
case 'n':
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| 151 |
noinput = 1;
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| 152 |
break;
|
| 153 |
case 'i':
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| 154 |
switch (argv[i][2]) {
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| 155 |
case '\0':
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| 156 |
itype = 'a';
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| 157 |
nbicols = 0;
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| 158 |
readfmt(argv[++i], 0);
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| 159 |
break;
|
| 160 |
case 'a':
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| 161 |
itype = 'a';
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| 162 |
nbicols = 0;
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| 163 |
break;
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| 164 |
case 'd':
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| 165 |
case 'D':
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| 166 |
itype = argv[i][2];
|
| 167 |
if (isdigit(argv[i][3]))
|
| 168 |
nbicols = atoi(argv[i]+3);
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| 169 |
else
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| 170 |
nbicols = 1;
|
| 171 |
if (nbicols*sizeof(double) > INBSIZ) {
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| 172 |
eputs(argv[0]);
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| 173 |
eputs(": too many input columns\n");
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| 174 |
quit(1);
|
| 175 |
}
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| 176 |
break;
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| 177 |
case 'f':
|
| 178 |
case 'F':
|
| 179 |
itype = argv[i][2];
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| 180 |
if (isdigit(argv[i][3]))
|
| 181 |
nbicols = atoi(argv[i]+3);
|
| 182 |
else
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| 183 |
nbicols = 1;
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| 184 |
if (nbicols*sizeof(float) > INBSIZ) {
|
| 185 |
eputs(argv[0]);
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| 186 |
eputs(": too many input columns\n");
|
| 187 |
quit(1);
|
| 188 |
}
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| 189 |
break;
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| 190 |
default:
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| 191 |
goto userr;
|
| 192 |
}
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| 193 |
break;
|
| 194 |
case 'o':
|
| 195 |
switch (argv[i][2]) {
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| 196 |
case '\0':
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| 197 |
otype = 'a';
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| 198 |
readfmt(argv[++i], 1);
|
| 199 |
break;
|
| 200 |
case 'a':
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| 201 |
otype = 'a';
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| 202 |
break;
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| 203 |
case 'd':
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| 204 |
case 'D':
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| 205 |
case 'f':
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| 206 |
case 'F':
|
| 207 |
otype = argv[i][2];
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| 208 |
break;
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| 209 |
default:
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| 210 |
goto userr;
|
| 211 |
}
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| 212 |
break;
|
| 213 |
case 'w':
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| 214 |
nowarn = !nowarn;
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| 215 |
break;
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| 216 |
case 'u':
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| 217 |
unbuff = !unbuff;
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| 218 |
break;
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| 219 |
default:;
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| 220 |
userr:
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| 221 |
eputs("Usage: ");
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| 222 |
eputs(argv[0]);
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| 223 |
eputs(" [-b][-l][-n][-p][-w][-u][-tS][-s svar=sval][-e expr][-f source][-i infmt][-o outfmt] [file]\n");
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| 224 |
quit(1);
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| 225 |
}
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| 226 |
if (otype != 'a')
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| 227 |
SET_FILE_BINARY(stdout);
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| 228 |
#ifdef getc_unlocked /* avoid lock/unlock overhead */
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| 229 |
flockfile(stdout);
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| 230 |
#endif
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| 231 |
if (noinput) { /* produce a single output record */
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| 232 |
if (i < argc) {
|
| 233 |
eputs(argv[0]);
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| 234 |
eputs(": file argument(s) incompatible with -n\n");
|
| 235 |
quit(1);
|
| 236 |
}
|
| 237 |
eclock++;
|
| 238 |
putout();
|
| 239 |
quit(0);
|
| 240 |
}
|
| 241 |
if (blnkeq) /* for efficiency */
|
| 242 |
nbsynch();
|
| 243 |
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| 244 |
if (i == argc) /* from stdin */
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| 245 |
execute(NULL);
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| 246 |
else /* from one or more files */
|
| 247 |
for ( ; i < argc; i++)
|
| 248 |
execute(argv[i]);
|
| 249 |
|
| 250 |
quit(0);
|
| 251 |
return 0; /* pro forma return */
|
| 252 |
}
|
| 253 |
|
| 254 |
|
| 255 |
static void
|
| 256 |
nbsynch(void) /* non-blank starting synch character */
|
| 257 |
{
|
| 258 |
if (inpfmt == NULL || (inpfmt->type & F_TYP) != T_LIT)
|
| 259 |
return;
|
| 260 |
while (isblnk(*inpfmt->f.sl))
|
| 261 |
inpfmt->f.sl++;
|
| 262 |
if (!*inpfmt->f.sl)
|
| 263 |
inpfmt = inpfmt->next;
|
| 264 |
}
|
| 265 |
|
| 266 |
|
| 267 |
static int
|
| 268 |
getinputrec( /* get next input record */
|
| 269 |
FILE *fp
|
| 270 |
)
|
| 271 |
{
|
| 272 |
if (inpfmt != NULL)
|
| 273 |
return(getrec());
|
| 274 |
if (tolower(itype) == 'd') {
|
| 275 |
if (fread(inpbuf, sizeof(double), nbicols, fp) != nbicols)
|
| 276 |
return(0);
|
| 277 |
if (itype == 'D')
|
| 278 |
swap64(inpbuf, nbicols);
|
| 279 |
return(1);
|
| 280 |
}
|
| 281 |
if (tolower(itype) == 'f') {
|
| 282 |
if (fread(inpbuf, sizeof(float), nbicols, fp) != nbicols)
|
| 283 |
return(0);
|
| 284 |
if (itype == 'F')
|
| 285 |
swap32(inpbuf, nbicols);
|
| 286 |
return(1);
|
| 287 |
}
|
| 288 |
return(fgets(inpbuf, INBSIZ, fp) != NULL);
|
| 289 |
}
|
| 290 |
|
| 291 |
|
| 292 |
static void
|
| 293 |
execute( /* process a file */
|
| 294 |
char *file
|
| 295 |
)
|
| 296 |
{
|
| 297 |
int conditional = vardefined("cond");
|
| 298 |
long nrecs = 0;
|
| 299 |
long nout = 0;
|
| 300 |
FILE *fp;
|
| 301 |
|
| 302 |
if (file == NULL)
|
| 303 |
fp = stdin;
|
| 304 |
else if ((fp = fopen(file, "r")) == NULL) {
|
| 305 |
eputs(file);
|
| 306 |
eputs(": cannot open\n");
|
| 307 |
quit(1);
|
| 308 |
}
|
| 309 |
if (itype != 'a')
|
| 310 |
SET_FILE_BINARY(fp);
|
| 311 |
#ifdef getc_unlocked /* avoid lock/unlock overhead */
|
| 312 |
flockfile(fp);
|
| 313 |
#endif
|
| 314 |
if (inpfmt != NULL)
|
| 315 |
initinp(fp);
|
| 316 |
|
| 317 |
while (getinputrec(fp)) {
|
| 318 |
varset("recno", '=', (double)++nrecs);
|
| 319 |
varset("outno", '=', (double)(nout+1));
|
| 320 |
colflg = 0;
|
| 321 |
eclock++;
|
| 322 |
if (!conditional || varvalue("cond") > 0.0) {
|
| 323 |
putout();
|
| 324 |
++nout;
|
| 325 |
}
|
| 326 |
}
|
| 327 |
fclose(fp);
|
| 328 |
}
|
| 329 |
|
| 330 |
|
| 331 |
static void
|
| 332 |
putout(void) /* produce an output record */
|
| 333 |
{
|
| 334 |
|
| 335 |
colpos = 0;
|
| 336 |
if (outfmt != NULL)
|
| 337 |
putrec();
|
| 338 |
else if (otype == 'a')
|
| 339 |
chanout(chanset);
|
| 340 |
else
|
| 341 |
chanout(bchanset);
|
| 342 |
if (colpos && otype == 'a')
|
| 343 |
putchar('\n');
|
| 344 |
if (unbuff)
|
| 345 |
fflush(stdout);
|
| 346 |
}
|
| 347 |
|
| 348 |
|
| 349 |
static double
|
| 350 |
l_in(char *funame) /* function call for $channel */
|
| 351 |
{
|
| 352 |
int n;
|
| 353 |
char *cp;
|
| 354 |
/* get argument as integer */
|
| 355 |
n = (int)(argument(1) + .5);
|
| 356 |
if (n != 0) /* return channel value */
|
| 357 |
return(chanvalue(n));
|
| 358 |
/* determine number of channels */
|
| 359 |
if (noinput || inpfmt != NULL)
|
| 360 |
return(0);
|
| 361 |
if (nbicols)
|
| 362 |
return(nbicols);
|
| 363 |
cp = inpbuf; /* need to count */
|
| 364 |
for (n = 0; *cp; )
|
| 365 |
if (blnkeq && isspace(sepchar)) {
|
| 366 |
while (isspace(*cp))
|
| 367 |
cp++;
|
| 368 |
n += *cp != '\0';
|
| 369 |
while (*cp && !isspace(*cp))
|
| 370 |
cp++;
|
| 371 |
} else {
|
| 372 |
n += *cp != '\n';
|
| 373 |
while (*cp && *cp++ != sepchar)
|
| 374 |
;
|
| 375 |
}
|
| 376 |
return(n);
|
| 377 |
}
|
| 378 |
|
| 379 |
double
|
| 380 |
chanvalue( /* return value for column n */
|
| 381 |
int n
|
| 382 |
)
|
| 383 |
{
|
| 384 |
int i;
|
| 385 |
char *cp;
|
| 386 |
|
| 387 |
if (noinput || inpfmt != NULL) {
|
| 388 |
eputs("no column input\n");
|
| 389 |
quit(1);
|
| 390 |
}
|
| 391 |
if (n < 1) {
|
| 392 |
eputs("illegal channel number\n");
|
| 393 |
quit(1);
|
| 394 |
}
|
| 395 |
if (nbicols) {
|
| 396 |
if (n > nbicols)
|
| 397 |
return(0.0);
|
| 398 |
if (tolower(itype) == 'd') {
|
| 399 |
cp = inpbuf + (n-1)*sizeof(double);
|
| 400 |
return(*(double *)cp);
|
| 401 |
}
|
| 402 |
cp = inpbuf + (n-1)*sizeof(float);
|
| 403 |
return(*(float *)cp);
|
| 404 |
}
|
| 405 |
if (n <= MAXCOL && colflg & 1L<<(n-1))
|
| 406 |
return(colval[n-1]);
|
| 407 |
|
| 408 |
cp = inpbuf;
|
| 409 |
for (i = 1; i < n; i++)
|
| 410 |
if (blnkeq && isspace(sepchar)) {
|
| 411 |
while (isspace(*cp))
|
| 412 |
cp++;
|
| 413 |
while (*cp && !isspace(*cp))
|
| 414 |
cp++;
|
| 415 |
} else
|
| 416 |
while (*cp && *cp++ != sepchar)
|
| 417 |
;
|
| 418 |
|
| 419 |
while (isspace(*cp)) /* some atof()'s don't like tabs */
|
| 420 |
cp++;
|
| 421 |
|
| 422 |
if (n <= MAXCOL) {
|
| 423 |
colflg |= 1L<<(n-1);
|
| 424 |
return(colval[n-1] = atof(cp));
|
| 425 |
} else
|
| 426 |
return(atof(cp));
|
| 427 |
}
|
| 428 |
|
| 429 |
|
| 430 |
void
|
| 431 |
chanset( /* output column n */
|
| 432 |
int n,
|
| 433 |
double v
|
| 434 |
)
|
| 435 |
{
|
| 436 |
if (colpos == 0) /* no leading separator */
|
| 437 |
colpos = 1;
|
| 438 |
while (colpos < n) {
|
| 439 |
putchar(sepchar);
|
| 440 |
colpos++;
|
| 441 |
}
|
| 442 |
printf("%.9g", v);
|
| 443 |
}
|
| 444 |
|
| 445 |
|
| 446 |
void
|
| 447 |
bchanset( /* output binary channel n */
|
| 448 |
int n,
|
| 449 |
double v
|
| 450 |
)
|
| 451 |
{
|
| 452 |
static char zerobuf[sizeof(double)];
|
| 453 |
float fval = v;
|
| 454 |
|
| 455 |
while (++colpos < n)
|
| 456 |
fwrite(zerobuf,
|
| 457 |
tolower(otype)=='d' ? sizeof(double) : sizeof(float),
|
| 458 |
1, stdout);
|
| 459 |
switch (otype) {
|
| 460 |
case 'D':
|
| 461 |
swap64((char *)&v, 1);
|
| 462 |
/* fall through */
|
| 463 |
case 'd':
|
| 464 |
fwrite(&v, sizeof(double), 1, stdout);
|
| 465 |
break;
|
| 466 |
case 'F':
|
| 467 |
swap32((char *)&fval, 1);
|
| 468 |
/* fall through */
|
| 469 |
case 'f':
|
| 470 |
fwrite(&fval, sizeof(float), 1, stdout);
|
| 471 |
break;
|
| 472 |
}
|
| 473 |
}
|
| 474 |
|
| 475 |
|
| 476 |
static void
|
| 477 |
readfmt( /* read record format */
|
| 478 |
char *spec,
|
| 479 |
int output
|
| 480 |
)
|
| 481 |
{
|
| 482 |
int fd;
|
| 483 |
char *inptr;
|
| 484 |
struct field fmt;
|
| 485 |
int res;
|
| 486 |
struct field *f;
|
| 487 |
/* check for inline format */
|
| 488 |
for (inptr = spec; *inptr; inptr++)
|
| 489 |
if (*inptr == '$')
|
| 490 |
break;
|
| 491 |
if (*inptr) /* inline */
|
| 492 |
inptr = spec;
|
| 493 |
else { /* from file */
|
| 494 |
if ((fd = open(spec, 0)) == -1) {
|
| 495 |
eputs(spec);
|
| 496 |
eputs(": cannot open\n");
|
| 497 |
quit(1);
|
| 498 |
}
|
| 499 |
res = read(fd, inpbuf+2, INBSIZ-2);
|
| 500 |
if (res <= 0 || res >= INBSIZ-1) {
|
| 501 |
eputs(spec);
|
| 502 |
if (res < 0)
|
| 503 |
eputs(": read error\n");
|
| 504 |
else if (res == 0)
|
| 505 |
eputs(": empty file\n");
|
| 506 |
else if (res >= INBSIZ-1)
|
| 507 |
eputs(": format too long\n");
|
| 508 |
quit(1);
|
| 509 |
}
|
| 510 |
close(fd);
|
| 511 |
(inptr=inpbuf+2)[res] = '\0';
|
| 512 |
}
|
| 513 |
f = &fmt; /* get fields */
|
| 514 |
while ((res = readfield(&inptr)) != F_NUL) {
|
| 515 |
f->next = (struct field *)emalloc(sizeof(struct field));
|
| 516 |
f = f->next;
|
| 517 |
f->type = res;
|
| 518 |
switch (res & F_TYP) {
|
| 519 |
case T_LIT:
|
| 520 |
f->f.sl = savqstr(inpbuf);
|
| 521 |
break;
|
| 522 |
case T_STR:
|
| 523 |
f->f.sv = getsvar(inpbuf);
|
| 524 |
break;
|
| 525 |
case T_NUM:
|
| 526 |
if (output)
|
| 527 |
f->f.ne = eparse(inpbuf);
|
| 528 |
else
|
| 529 |
f->f.nv = savestr(inpbuf);
|
| 530 |
break;
|
| 531 |
}
|
| 532 |
/* add final newline if necessary */
|
| 533 |
if (!igneol && *inptr == '\0' && inptr[-1] != '\n')
|
| 534 |
inptr = "\n";
|
| 535 |
}
|
| 536 |
f->next = NULL;
|
| 537 |
if (output)
|
| 538 |
outfmt = fmt.next;
|
| 539 |
else
|
| 540 |
inpfmt = fmt.next;
|
| 541 |
}
|
| 542 |
|
| 543 |
|
| 544 |
static int
|
| 545 |
readfield( /* get next field in format */
|
| 546 |
char **pp
|
| 547 |
)
|
| 548 |
{
|
| 549 |
int type = F_NUL;
|
| 550 |
int width = 0;
|
| 551 |
char *cp;
|
| 552 |
|
| 553 |
cp = inpbuf;
|
| 554 |
while (cp < &inpbuf[INBSIZ-1] && **pp != '\0') {
|
| 555 |
width++;
|
| 556 |
switch (type) {
|
| 557 |
case F_NUL:
|
| 558 |
if (**pp == '$') {
|
| 559 |
(*pp)++;
|
| 560 |
width++;
|
| 561 |
if (**pp == '{') {
|
| 562 |
type = T_NUM;
|
| 563 |
(*pp)++;
|
| 564 |
continue;
|
| 565 |
} else if (**pp == '(') {
|
| 566 |
type = T_STR;
|
| 567 |
(*pp)++;
|
| 568 |
continue;
|
| 569 |
} else if (**pp != '$') {
|
| 570 |
eputs("format error\n");
|
| 571 |
quit(1);
|
| 572 |
}
|
| 573 |
width--;
|
| 574 |
}
|
| 575 |
type = T_LIT;
|
| 576 |
*cp++ = *(*pp)++;
|
| 577 |
continue;
|
| 578 |
case T_LIT:
|
| 579 |
if (**pp == '$') {
|
| 580 |
width--;
|
| 581 |
break;
|
| 582 |
}
|
| 583 |
*cp++ = *(*pp)++;
|
| 584 |
continue;
|
| 585 |
case T_NUM:
|
| 586 |
if (**pp == '}') {
|
| 587 |
(*pp)++;
|
| 588 |
break;
|
| 589 |
}
|
| 590 |
if (!isspace(**pp))
|
| 591 |
*cp++ = **pp;
|
| 592 |
(*pp)++;
|
| 593 |
continue;
|
| 594 |
case T_STR:
|
| 595 |
if (**pp == ')') {
|
| 596 |
(*pp)++;
|
| 597 |
break;
|
| 598 |
}
|
| 599 |
if (!isspace(**pp))
|
| 600 |
*cp++ = **pp;
|
| 601 |
(*pp)++;
|
| 602 |
continue;
|
| 603 |
}
|
| 604 |
break;
|
| 605 |
}
|
| 606 |
*cp = '\0';
|
| 607 |
return(type | width);
|
| 608 |
}
|
| 609 |
|
| 610 |
|
| 611 |
struct strvar *
|
| 612 |
getsvar( /* get string variable */
|
| 613 |
char *svname
|
| 614 |
)
|
| 615 |
{
|
| 616 |
struct strvar *sv;
|
| 617 |
|
| 618 |
for (sv = svhead; sv != NULL; sv = sv->next)
|
| 619 |
if (!strcmp(sv->name, svname))
|
| 620 |
return(sv);
|
| 621 |
sv = (struct strvar *)emalloc(sizeof(struct strvar));
|
| 622 |
sv->name = savqstr(svname);
|
| 623 |
sv->val = sv->preset = NULL;
|
| 624 |
sv->next = svhead;
|
| 625 |
svhead = sv;
|
| 626 |
return(sv);
|
| 627 |
}
|
| 628 |
|
| 629 |
|
| 630 |
static void
|
| 631 |
svpreset( /* preset a string variable */
|
| 632 |
char *eqn
|
| 633 |
)
|
| 634 |
{
|
| 635 |
struct strvar *sv;
|
| 636 |
char *val;
|
| 637 |
|
| 638 |
for (val = eqn; *val != '='; val++)
|
| 639 |
if (!*val)
|
| 640 |
return;
|
| 641 |
*val++ = '\0';
|
| 642 |
sv = getsvar(eqn);
|
| 643 |
if (sv->preset != NULL)
|
| 644 |
freqstr(sv->preset);
|
| 645 |
if (sv->val != NULL)
|
| 646 |
freqstr(sv->val);
|
| 647 |
sv->val = sv->preset = savqstr(val);
|
| 648 |
*--val = '=';
|
| 649 |
}
|
| 650 |
|
| 651 |
|
| 652 |
static void
|
| 653 |
clearrec(void) /* clear input record variables */
|
| 654 |
{
|
| 655 |
struct field *f;
|
| 656 |
|
| 657 |
for (f = inpfmt; f != NULL; f = f->next)
|
| 658 |
switch (f->type & F_TYP) {
|
| 659 |
case T_NUM:
|
| 660 |
dremove(f->f.nv);
|
| 661 |
break;
|
| 662 |
case T_STR:
|
| 663 |
if (f->f.sv->val != f->f.sv->preset) {
|
| 664 |
freqstr(f->f.sv->val);
|
| 665 |
f->f.sv->val = f->f.sv->preset;
|
| 666 |
}
|
| 667 |
break;
|
| 668 |
}
|
| 669 |
}
|
| 670 |
|
| 671 |
|
| 672 |
static int
|
| 673 |
getrec(void) /* get next record from file */
|
| 674 |
{
|
| 675 |
int eatline;
|
| 676 |
struct field *f;
|
| 677 |
|
| 678 |
while (ipb.chr != EOF) {
|
| 679 |
if (blnkeq) { /* beware of nbsynch() */
|
| 680 |
while (isblnk(ipb.chr))
|
| 681 |
resetinp();
|
| 682 |
if (ipb.chr == EOF)
|
| 683 |
return(0);
|
| 684 |
}
|
| 685 |
eatline = (!igneol && ipb.chr != '\n');
|
| 686 |
clearrec(); /* start with fresh record */
|
| 687 |
for (f = inpfmt; f != NULL; f = f->next)
|
| 688 |
if (getfield(f) == -1)
|
| 689 |
break;
|
| 690 |
if (f == NULL) {
|
| 691 |
advinp(); /* got one! */
|
| 692 |
return(1);
|
| 693 |
}
|
| 694 |
resetinp(); /* eat false start */
|
| 695 |
if (eatline) { /* eat rest of line */
|
| 696 |
while (ipb.chr != '\n') {
|
| 697 |
if (ipb.chr == EOF)
|
| 698 |
return(0);
|
| 699 |
resetinp();
|
| 700 |
}
|
| 701 |
resetinp();
|
| 702 |
}
|
| 703 |
}
|
| 704 |
return(0);
|
| 705 |
}
|
| 706 |
|
| 707 |
|
| 708 |
static int
|
| 709 |
getfield( /* get next field */
|
| 710 |
struct field *f
|
| 711 |
)
|
| 712 |
{
|
| 713 |
static char buf[RMAXWORD+1]; /* no recursion! */
|
| 714 |
int delim, inword;
|
| 715 |
double d;
|
| 716 |
char *np;
|
| 717 |
char *cp;
|
| 718 |
|
| 719 |
switch (f->type & F_TYP) {
|
| 720 |
case T_LIT:
|
| 721 |
cp = f->f.sl;
|
| 722 |
do {
|
| 723 |
if (blnkeq && isblnk(*cp)) {
|
| 724 |
if (!isblnk(ipb.chr))
|
| 725 |
return(-1);
|
| 726 |
do
|
| 727 |
cp++;
|
| 728 |
while (isblnk(*cp));
|
| 729 |
do
|
| 730 |
scaninp();
|
| 731 |
while (isblnk(ipb.chr));
|
| 732 |
} else if (*cp == ipb.chr) {
|
| 733 |
cp++;
|
| 734 |
scaninp();
|
| 735 |
} else
|
| 736 |
return(-1);
|
| 737 |
} while (*cp);
|
| 738 |
return(0);
|
| 739 |
case T_STR:
|
| 740 |
if (f->next == NULL || (f->next->type & F_TYP) != T_LIT)
|
| 741 |
delim = EOF;
|
| 742 |
else
|
| 743 |
delim = f->next->f.sl[0];
|
| 744 |
cp = buf;
|
| 745 |
do {
|
| 746 |
if (ipb.chr == EOF || ipb.chr == '\n')
|
| 747 |
inword = 0;
|
| 748 |
else if (blnkeq && delim != EOF)
|
| 749 |
inword = isblnk(delim) ?
|
| 750 |
!isblnk(ipb.chr)
|
| 751 |
: ipb.chr != delim;
|
| 752 |
else
|
| 753 |
inword = cp-buf < (f->type & F_WID);
|
| 754 |
if (inword) {
|
| 755 |
*cp++ = ipb.chr;
|
| 756 |
scaninp();
|
| 757 |
}
|
| 758 |
} while (inword && cp < &buf[RMAXWORD]);
|
| 759 |
*cp = '\0';
|
| 760 |
if (f->f.sv->val == NULL)
|
| 761 |
f->f.sv->val = savqstr(buf); /* first setting */
|
| 762 |
else if (strcmp(f->f.sv->val, buf))
|
| 763 |
return(-1); /* doesn't match! */
|
| 764 |
return(0);
|
| 765 |
case T_NUM:
|
| 766 |
if (f->next == NULL || (f->next->type & F_TYP) != T_LIT)
|
| 767 |
delim = EOF;
|
| 768 |
else
|
| 769 |
delim = f->next->f.sl[0];
|
| 770 |
np = NULL;
|
| 771 |
cp = buf;
|
| 772 |
do {
|
| 773 |
if (!((np==NULL&&isblnk(ipb.chr)) || isnum(ipb.chr)))
|
| 774 |
inword = 0;
|
| 775 |
else if (blnkeq && delim != EOF)
|
| 776 |
inword = isblnk(delim) ?
|
| 777 |
!isblnk(ipb.chr)
|
| 778 |
: ipb.chr != delim;
|
| 779 |
else
|
| 780 |
inword = cp-buf < (f->type & F_WID);
|
| 781 |
if (inword) {
|
| 782 |
if (np==NULL && !isblnk(ipb.chr))
|
| 783 |
np = cp;
|
| 784 |
*cp++ = ipb.chr;
|
| 785 |
scaninp();
|
| 786 |
}
|
| 787 |
} while (inword && cp < &buf[RMAXWORD]);
|
| 788 |
*cp = '\0';
|
| 789 |
d = np==NULL ? 0. : atof(np);
|
| 790 |
if (!vardefined(f->f.nv))
|
| 791 |
varset(f->f.nv, '=', d); /* first setting */
|
| 792 |
else if ((d = (varvalue(f->f.nv)-d)/(d==0.?1.:d)) > .001
|
| 793 |
|| d < -.001)
|
| 794 |
return(-1); /* doesn't match! */
|
| 795 |
return(0);
|
| 796 |
}
|
| 797 |
return -1; /* pro forma return */
|
| 798 |
}
|
| 799 |
|
| 800 |
|
| 801 |
static void
|
| 802 |
putrec(void) /* output a record */
|
| 803 |
{
|
| 804 |
char fmt[32], typ[16];
|
| 805 |
int n;
|
| 806 |
struct field *f;
|
| 807 |
int adlast, adnext;
|
| 808 |
double dv, av;
|
| 809 |
|
| 810 |
adlast = 0;
|
| 811 |
for (f = outfmt; f != NULL; f = f->next) {
|
| 812 |
adnext = blnkeq &&
|
| 813 |
f->next != NULL &&
|
| 814 |
!( (f->next->type&F_TYP) == T_LIT &&
|
| 815 |
f->next->f.sl[0] == ' ' );
|
| 816 |
switch (f->type & F_TYP) {
|
| 817 |
case T_LIT:
|
| 818 |
fputs(f->f.sl, stdout);
|
| 819 |
adlast = f->f.sl[(f->type&F_WID)-1] != ' ';
|
| 820 |
break;
|
| 821 |
case T_STR:
|
| 822 |
if (f->f.sv->val == NULL) {
|
| 823 |
eputs(f->f.sv->name);
|
| 824 |
eputs(": undefined string\n");
|
| 825 |
quit(1);
|
| 826 |
}
|
| 827 |
n = (int)(f->type & F_WID) - strlen(f->f.sv->val);
|
| 828 |
if (adlast)
|
| 829 |
fputs(f->f.sv->val, stdout);
|
| 830 |
if (!(adlast && adnext))
|
| 831 |
while (n-- > 0)
|
| 832 |
putchar(' ');
|
| 833 |
if (!adlast)
|
| 834 |
fputs(f->f.sv->val, stdout);
|
| 835 |
adlast = 1;
|
| 836 |
break;
|
| 837 |
case T_NUM:
|
| 838 |
n = f->type & F_WID;
|
| 839 |
dv = evalue(f->f.ne);
|
| 840 |
av = fabs(dv);
|
| 841 |
if (n <= 9)
|
| 842 |
strcpy(typ, "g");
|
| 843 |
else
|
| 844 |
sprintf(typ, ".%de", n-5);
|
| 845 |
if (av < 1L<<31) {
|
| 846 |
long iv = (int)(av + .5);
|
| 847 |
if (iv && fabs(av-iv) <= av*1e-14)
|
| 848 |
strcpy(typ, ".0f");
|
| 849 |
}
|
| 850 |
if (adlast && adnext)
|
| 851 |
sprintf(fmt, "%%%s", typ);
|
| 852 |
else if (adlast)
|
| 853 |
sprintf(fmt, "%%-%d%s", n, typ);
|
| 854 |
else
|
| 855 |
sprintf(fmt, "%%%d%s", n, typ);
|
| 856 |
printf(fmt, dv);
|
| 857 |
adlast = 1;
|
| 858 |
break;
|
| 859 |
}
|
| 860 |
}
|
| 861 |
}
|
| 862 |
|
| 863 |
|
| 864 |
static void
|
| 865 |
initinp(FILE *fp) /* prepare lookahead buffer */
|
| 866 |
|
| 867 |
{
|
| 868 |
ipb.fin = fp;
|
| 869 |
ipb.beg = ipb.end = inpbuf;
|
| 870 |
ipb.pos = inpbuf-1; /* position before beginning */
|
| 871 |
ipb.chr = '\0';
|
| 872 |
scaninp();
|
| 873 |
}
|
| 874 |
|
| 875 |
|
| 876 |
static void
|
| 877 |
scaninp(void) /* scan next character */
|
| 878 |
{
|
| 879 |
if (ipb.chr == EOF)
|
| 880 |
return;
|
| 881 |
if (++ipb.pos >= &inpbuf[INBSIZ])
|
| 882 |
ipb.pos = inpbuf;
|
| 883 |
if (ipb.pos == ipb.end) { /* new character */
|
| 884 |
if ((ipb.chr = getc(ipb.fin)) != EOF) {
|
| 885 |
*ipb.end = ipb.chr;
|
| 886 |
if (++ipb.end >= &inpbuf[INBSIZ])
|
| 887 |
ipb.end = inpbuf;
|
| 888 |
if (ipb.end == ipb.beg)
|
| 889 |
ipb.beg = NULL;
|
| 890 |
}
|
| 891 |
} else
|
| 892 |
ipb.chr = *ipb.pos;
|
| 893 |
}
|
| 894 |
|
| 895 |
|
| 896 |
static void
|
| 897 |
advinp(void) /* move home to current position */
|
| 898 |
{
|
| 899 |
ipb.beg = ipb.pos;
|
| 900 |
}
|
| 901 |
|
| 902 |
|
| 903 |
static void
|
| 904 |
resetinp(void) /* rewind position and advance 1 */
|
| 905 |
{
|
| 906 |
if (ipb.beg == NULL) /* full */
|
| 907 |
ipb.beg = ipb.end;
|
| 908 |
ipb.pos = ipb.beg;
|
| 909 |
ipb.chr = *ipb.pos;
|
| 910 |
if (passive) /* transmit unmatched character? */
|
| 911 |
fputc(ipb.chr, stdout);
|
| 912 |
if (++ipb.beg >= &inpbuf[INBSIZ])
|
| 913 |
ipb.beg = inpbuf;
|
| 914 |
scaninp();
|
| 915 |
}
|
| 916 |
|
| 917 |
|
| 918 |
void
|
| 919 |
eputs(char *msg)
|
| 920 |
{
|
| 921 |
fputs(msg, stderr);
|
| 922 |
}
|
| 923 |
|
| 924 |
|
| 925 |
void
|
| 926 |
wputs(char *msg)
|
| 927 |
{
|
| 928 |
if (!nowarn)
|
| 929 |
eputs(msg);
|
| 930 |
}
|
| 931 |
|
| 932 |
|
| 933 |
void
|
| 934 |
quit(int code)
|
| 935 |
{
|
| 936 |
exit(code);
|
| 937 |
}
|
