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[unix-history] / usr / src / usr.bin / window / wwgets.c

#ifndef lint
static  char *sccsid = "@(#)wwgets.c    1.4 83/07/27";
#endif

#include "defs.h"

char *ibufp = ibuf;

bread()
{
       register n;
       register char *p;
       int imask;

       while (ibufc == 0) {
               wwflush();
               imask = 1 << 0;
               while (wwforce(&imask) < 0)
                       ;
               if ((imask & 1 << 0) == 0)
                       continue;
               if (ibufc == 0) {
                       p = ibufp = ibuf;
                       n = sizeof ibuf;
               } else {
                       p = ibufp + ibufc;
                       n = (ibuf + sizeof ibuf) - p;
               }
               if ((n = read(0, p, n)) > 0) {
                       ibufc += n;
                       nreadc += n;
               } else if (n == 0)
                       nreadz++;
               else
                       nreade++;
               nread++;
       }
}