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Annotation of 3BSD/cmd/refer/what3.c, revision 1.1.1.1

1.1       root        1: # include "what..c"
                      2: 
                      3: doclook(argc, argv, colevel)
                      4:        char *argv[];
                      5: {
                      6:        int fpa[2], fpb[2], fpc[2], pid1, pid2, st;
                      7:        int iarg;
                      8:        char *s;
                      9:        FILE *ansf;
                     10:        struct filans *af;
                     11:        struct stat statbuf;
                     12: # define RD 0
                     13: # define WR 1
                     14: # define fmv(x,y) close(y); dup(x); close(x);
                     15: /* we want to run chkbib and then lhunt and pipe in & out */
                     16: pipe (fpa); /* from this program to chkbib */
                     17: pipe (fpb); /* from chkbib to lhunt */
                     18: pipe (fpc); /* from lhunt to us */
                     19: if (  (pid1 = fork())  ==0)
                     20:        {
                     21:        fmv(fpa[RD], 0);
                     22:        fmv(fpb[WR], 1);
                     23:        close(fpa[WR]); close(fpb[RD]); close(fpc[RD]); close(fpc[WR]); 
                     24:        execl("/usr/lib/refer/mkey", "mkey", "-s", 0);
                     25:        _assert(0);
                     26:        }
                     27: if (  (pid2 = fork()) == 0)
                     28:        {
                     29:        char coarg[20];
                     30:        sprintf(coarg, "-C%d", colevel);
                     31:        fmv(fpb[RD], 0);
                     32:        fmv(fpc[WR], 1);
                     33:        close(fpa[RD]); close(fpa[WR]); close(fpb[WR]); close(fpc[RD]);
                     34:        execl("/usr/lib/refer/hunt", "hunt",
                     35:                /* "-P", */
                     36:                coarg, "-Ty", "-Fn", "/usr/dict/lookall/All", 0);
                     37:        _assert(0);
                     38:        }
                     39: _assert (pid1 != -1); _assert(pid2 != -1);
                     40: close(fpb[RD]); close(fpb[WR]); close(fpa[RD]); close(fpc[WR]);
                     41: ansf = fopen("/dev/null", "r");
                     42: fmv (fpc[RD], ansf->_file);
                     43: for(iarg=1; iarg<argc; iarg++)
                     44:        prod(fpa[WR], argv[iarg]);
                     45: close(fpa[WR]);
                     46: s=fnames;
                     47: af=files;
                     48: while (af < files+NFILES)
                     49:        {
                     50:        if (fgets(af->nm=s, NAMES, ansf)==0)
                     51:                break;
                     52:        trimnl(s);
                     53:        if (*s==0) continue;
                     54:        while (*s++);
                     55:        _assert(s<fnames+NAMES);
                     56:        st = stat(af->nm, &statbuf);
                     57:        if (st<0) continue;
                     58:        af->uid = statbuf.st_uid;
                     59:        af->fdate = statbuf.st_mtime;
                     60:        af->size = statbuf.st_size;
                     61:        af++;
                     62:        }
                     63: fclose(ansf);
                     64: return(af-files);
                     65: }
                     66: prod(f,s)
                     67:        char *s;
                     68: {
                     69: write (f, s, strlen(s));
                     70: write (f, "\n", 1);
                     71: }

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