| 55 |
|
#define freqstr(s) efree(s) |
| 56 |
|
|
| 57 |
|
static int getinputrec(FILE *fp); |
| 58 |
< |
static void scaninp(void), advinp(void), passinp(void), skipinp(void); |
| 58 |
> |
static void scaninp(void), skipinp(void), advinp(int skip); |
| 59 |
|
static void putrec(void), putout(void), nbsynch(void); |
| 60 |
|
static int getrec(void); |
| 61 |
|
static void execute(char *file); |
| 309 |
|
char *file |
| 310 |
|
) |
| 311 |
|
{ |
| 312 |
< |
const int conditional = vardefined("cond"); |
| 313 |
< |
const int set_recno = (varlookup("recno") != NULL); |
| 314 |
< |
const int set_outno = (varlookup("outno") != NULL); |
| 315 |
< |
long nrecs = 0; |
| 316 |
< |
long nout = 0; |
| 317 |
< |
FILE *fp; |
| 312 |
> |
static char condVN[] = "cond"; |
| 313 |
> |
static char recnoVN[] = "recno"; |
| 314 |
> |
static char outnoVN[] = "outno"; |
| 315 |
> |
const int conditional = vardefined(condVN); |
| 316 |
> |
const int set_recno = (varlookup(recnoVN) != NULL); |
| 317 |
> |
const int set_outno = (varlookup(outnoVN) != NULL); |
| 318 |
> |
long nrecs = 0; |
| 319 |
> |
long nout = 0; |
| 320 |
> |
FILE *fp; |
| 321 |
|
|
| 322 |
|
if (file == NULL) |
| 323 |
|
fp = stdin; |
| 331 |
|
#ifdef getc_unlocked /* avoid lock/unlock overhead */ |
| 332 |
|
flockfile(fp); |
| 333 |
|
#endif |
| 334 |
+ |
if (conditional == ':') { |
| 335 |
+ |
eputs(condVN); |
| 336 |
+ |
eputs(": defined as constant\n"); |
| 337 |
+ |
quit(1); |
| 338 |
+ |
} |
| 339 |
|
if (inpfmt != NULL) |
| 340 |
|
initinp(fp); |
| 341 |
|
|
| 342 |
|
while (inpfmt != NULL ? getrec() : getinputrec(fp)) { |
| 343 |
|
++nrecs; |
| 344 |
|
if (set_recno) |
| 345 |
< |
varset("recno", '=', (double)nrecs); |
| 345 |
> |
varset(recnoVN, '=', (double)nrecs); |
| 346 |
|
if (set_outno) |
| 347 |
< |
varset("outno", '=', (double)(nout+1)); |
| 347 |
> |
varset(outnoVN, '=', (double)(nout+1)); |
| 348 |
|
colflg = 0; |
| 349 |
|
eclock++; |
| 350 |
< |
if (!conditional || varvalue("cond") > 0.0) { |
| 350 |
> |
if (!conditional || varvalue(condVN) > 0.0) { |
| 351 |
> |
if (inpfmt != NULL) |
| 352 |
> |
advinp(0); |
| 353 |
|
putout(); |
| 354 |
|
++nout; |
| 345 |
– |
advinp(); |
| 355 |
|
} else if (inpfmt != NULL) { |
| 356 |
< |
if (passive < 0) |
| 348 |
< |
passinp(); |
| 349 |
< |
else |
| 350 |
< |
advinp(); |
| 356 |
> |
advinp(1); |
| 357 |
|
} |
| 358 |
|
if (incnt && nrecs >= incnt) |
| 359 |
|
break; |
| 928 |
|
|
| 929 |
|
|
| 930 |
|
static void |
| 931 |
< |
advinp(void) /* move home to current position */ |
| 931 |
> |
skipinp(void) /* rewind position and advance 1 */ |
| 932 |
|
{ |
| 933 |
< |
ipb.beg = ipb.pos; |
| 933 |
> |
if (ipb.beg == NULL) /* can't fully rewind? */ |
| 934 |
> |
ipb.beg = ipb.end; |
| 935 |
> |
ipb.pos = ipb.beg; |
| 936 |
> |
ipb.chr = *ipb.pos; |
| 937 |
> |
if (passive) /* transmit unmatched character? */ |
| 938 |
> |
putchar(ipb.chr); |
| 939 |
> |
if (++ipb.beg >= &inpbuf[INBSIZ]) |
| 940 |
> |
ipb.beg = inpbuf; |
| 941 |
> |
scaninp(); |
| 942 |
|
} |
| 943 |
|
|
| 944 |
|
|
| 945 |
|
static void |
| 946 |
< |
passinp(void) /* pass beginning to current position */ |
| 946 |
> |
advinp(int skip) /* advance home to current position */ |
| 947 |
|
{ |
| 948 |
< |
if (!passive | (ipb.beg == NULL)) { |
| 949 |
< |
advinp(); |
| 948 |
> |
if (!skip | (passive >= 0)) { |
| 949 |
> |
ipb.beg = ipb.pos; /* no need to copy input */ |
| 950 |
|
return; |
| 951 |
|
} |
| 952 |
< |
while (ipb.beg != ipb.pos) { /* transfer buffer unaltered */ |
| 952 |
> |
if (ipb.beg == NULL) /* buffer overflowed a bit? */ |
| 953 |
> |
ipb.beg = ipb.end; |
| 954 |
> |
while (ipb.beg != ipb.pos) { /* copy buffer to current */ |
| 955 |
|
putchar(*ipb.beg); |
| 956 |
|
if (++ipb.beg >= &inpbuf[INBSIZ]) |
| 957 |
|
ipb.beg = inpbuf; |
| 958 |
|
} |
| 943 |
– |
} |
| 944 |
– |
|
| 945 |
– |
|
| 946 |
– |
static void |
| 947 |
– |
skipinp(void) /* rewind position and advance 1 */ |
| 948 |
– |
{ |
| 949 |
– |
if (ipb.beg == NULL) /* full */ |
| 950 |
– |
ipb.beg = ipb.end; |
| 951 |
– |
ipb.pos = ipb.beg; |
| 952 |
– |
ipb.chr = *ipb.pos; |
| 953 |
– |
if (passive) /* transmit unmatched character? */ |
| 954 |
– |
putchar(ipb.chr); |
| 955 |
– |
if (++ipb.beg >= &inpbuf[INBSIZ]) |
| 956 |
– |
ipb.beg = inpbuf; |
| 957 |
– |
scaninp(); |
| 959 |
|
} |
| 960 |
|
|
| 961 |
|
|
