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/*
export EVENTS="(dval:D,fval:E,ival:J,uival:V,sval:I,cval:B,cval2:B)"
sorttest | _funsort -B24 +... | fundisp "stdin[EVENTS()]"
*/
#include <stdio.h>
#include <stdlib.h>
#include <salloc.h>
extern char *optarg;
extern int optind;
#define NREC 10
#define SZ_LINE 1024
#define MAX(a,b) (((a)>(b))?(a):(b))
typedef struct brec{
double dval;
float fval;
int ival;
unsigned int uival;
short sval;
char cval;
char cval2;
} Binary;
void
fillb(Binary *b, int i, int dodouble)
{
int idiv;
b->dval = (double)rand();
b->fval = (float)rand();
if( dodouble ){
if( (i%2) == 0 )
b->ival = rand();
}
else{
b->ival = rand();
}
b->uival = (unsigned)rand();
idiv = MAX(1,(RAND_MAX/32768));
b->sval = rand()/idiv;
idiv = MAX(1,(RAND_MAX/128));
b->cval = rand()/idiv;
b->cval2 = rand()/idiv;
}
int main(int argc, char **argv)
{
int i;
int c;
int ival;
int ichan, ochan, pid, status;
int rlen;
int nrec=NREC;
int dodouble=0;
int doxeq=0;
char *prog="_funsort";
char *slist=NULL;
char *s;
char tbuf[SZ_LINE];
char cmd[SZ_LINE];
FILE *fp=stdout;
Binary b;
/* process switch arguments */
while ((c = getopt(argc, argv, "dn:s:x")) != -1){
switch(c){
case 'd':
dodouble = 1;
break;
case 'n':
nrec = atoi(optarg);
break;
case 's':
doxeq = 1;
slist=(char *)NewString(optarg);
break;
case 'x':
doxeq = 1;
break;
}
}
/* see rand */
srand(time(NULL));
/* generate sort parameters and start sort program */
if( doxeq ){
snprintf(cmd, SZ_LINE-1, "%s -B%d %s", prog, sizeof(Binary), tbuf);
rlen = SZ_LINE - strlen(cmd);
if( !slist ){
slist = (char *)NewString("d");
}
for(s=slist; *s; s++){
switch(*s){
case 'd':
sprintf(tbuf, "+d0");
break;
case 'f':
sprintf(tbuf, "+f8");
break;
case 'i':
sprintf(tbuf, "+i12");
break;
case 'I':
sprintf(tbuf, "+I16");
break;
case 's':
sprintf(tbuf, "+s20");
break;
case 'c':
sprintf(tbuf, "+c22");
break;
default:
fprintf(stderr, "ERROR: unknown sort type: %s\n", s);
exit(1);
}
strncat(cmd, " ", rlen);
rlen--;
strncat(cmd, tbuf, rlen);
rlen -= strlen(tbuf);
if( rlen <=0 ){
fprintf(stderr, "ERROR: too many arguments\n");
exit(1);
}
}
if( !ProcessOpen(cmd, &ichan, &ochan, &pid) ){
fprintf(stderr, "ERROR: can't start %s\n", prog);
exit(1);
}
/* write unsorted records */
for(i=0; i<nrec; i++){
fillb(&b, i, dodouble);
write(ochan, &b, sizeof(Binary));
}
/* signal EOF to sort program */
close(ochan);
while( read(ichan, &b, sizeof(Binary)) == sizeof(Binary) )
write(1, &b, sizeof(Binary));
if( slist ) free(slist);
ProcessClose(pid, &status);
}
else{
/* write unsorted records */
for(i=0; i<nrec; i++){
fillb(&b, i, dodouble);
fwrite(&b, sizeof(Binary), 1, fp);
}
}
}
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