示例#1
0
文件: smartrel.c 项目: b1234561/EIG
void
writesnpeigs(char *snpeigname, SNP **xsnplist, double *ffvecs, int numeigs, int ncols) 
{
// this is called at end and ffvecs overwritten
  double *xpt, y, yscal, *snpsc ;
  int i, j, k, kmax, kmin ;
  SNP * cupt  ;
  FILE *fff ;
  
  for (j=0; j<numeigs; ++j) {  
   xpt = ffvecs+j*ncols ;  
   y = asum2(xpt, ncols) ;  
   yscal = (double) ncols / y ;
   yscal = sqrt(yscal) ;
   vst(xpt, xpt, yscal, ncols) ;
  }


  ZALLOC(snpsc, ncols, double) ;
  vclear(snpsc, -99999, ncols) ;
  for (j=0; j<numeigs; ++j) {  
   for (i=0; i<ncols; ++i) {  
    cupt = xsnplist[i] ;
    if (cupt -> ignore) continue ;
    y = ffvecs[j*ncols+i] ;
    snpsc[i] = fabs(y) ; 
   }
   for (k=0; k<=10; ++k) { 
    vlmaxmin(snpsc, ncols, &kmax, &kmin) ;
    cupt = xsnplist[kmax] ;
    printf("eigbestsnp %4d %20s %2d %12d %9.3f\n", j+1, cupt -> ID, cupt -> chrom, nnint(cupt -> physpos), snpsc[kmax]) ;
    snpsc[kmax] = -1.0 ;
   }
  }
  free(snpsc) ;


  if (snpeigname == NULL) return ;
  openit (snpeigname, &fff, "w") ;

  for (i=0; i<ncols; ++i) {  
   cupt = xsnplist[i] ;
   if (cupt -> ignore) continue ;

   fprintf(fff, "%20s", cupt -> ID) ;
   fprintf(fff,  " %2d", cupt -> chrom) ;
   fprintf(fff,  " %12d", nnint(cupt -> physpos)) ;

   for (j=0; j<numeigs; ++j) {  
    fprintf(fff, " %9.3f", ffvecs[j*ncols+i]) ;  
   }
   fprintf(fff, "\n") ;
  }

  fclose(fff) ;

}
示例#2
0
void rrsum(double *a, double *rr, int m, int n)
{
    int i,j ;
    vclear(rr,0.0,n) ;
    for (i=0; i<m; i++) {
        for (j=0; j<n; j++) {
            rr[j] += a[i+j*m] ;
        }
    }
}
示例#3
0
void ccsum(double *a, double *cc, int m, int n)
{
    int i,j ;
    vclear(cc,0.0,m) ;
    for (i=0; i<m; i++) {
        for (j=0; j<n; j++) {
            cc[i] += a[i+j*m] ;
        }
    }
}
示例#4
0
void colsum(double *a, double *cc, int n)
{
    int i,j ;
    vclear(cc,0.0,n) ;
    for (i=0; i<n; i++) {
        for (j=0; j<n; j++) {
            cc[i] += a[i+j*n] ;
        }
    }
}
示例#5
0
void clear2D(double ***xx, int numrows, int numcols, double val)
{
    double **array ;
    int i ;
    array = *xx ;

    for (i=numrows-1; i>=0; i--) {
        vclear(array[i], val, numcols) ;
    }

}
示例#6
0
void redraw()
{
	vsave();
	windowinit();
	vclear();
	vdirty(0, lines);
	if(state != VISUAL) {
		vclean();
		vmoveto(dot, cursor, 0);
	} else {
		vredraw(WTOP);
		vrepaint(cursor);
		vfixcurs();
	}
}
示例#7
0
void
fixdisplay(void)
{
	vclear();
	vdirty(0, vcnt);
	if (state != VISUAL) {
		vclean();
		vcnt = 0;
		vmoveto(dot, cursor, 0);
	} else {
		vredraw(WTOP);
		vrepaint(cursor);
		vfixcurs();
	}
}
示例#8
0
double wynn(double *v, int n, double *acc, int *nacc)   
{
 double *x0, *x1, *xn ; 
 double t, amax, amin ;
 int iter = 0, j, nn  ;

 vmaxmin(v, n, &amax, &amin) ;  
 if (amax<=amin) {  
  vclear(acc, amax, n/2) ;
  *nacc = n/2 ;
  return amax ;
 }

 ZALLOC(x0, n, double) ; 
 ZALLOC(x1, n, double) ;
 ZALLOC(xn, n, double) ;
 copyarr(v, x1, n) ;  
 nn = n ;  
 for (;;) {  
  for (j=0; (j+1) < nn ; ++j) {  
   t = x0[j+1] + 1.0/(x1[j+1]-x1[j]) ;
   xn[j] = t ;
  }
  --nn ; 
  if (nn<2) break ;  
  copyarr(x1, x0, n) ;
  copyarr(xn, x1, n) ;

  for (j=0; (j+1) < nn ; ++j) {  
   t = x0[j+1] + 1.0/(x1[j+1]-x1[j]) ;
   xn[j] = t ;
  }
  --nn ; 
  if (nn<2) break ;  
  copyarr(x1, x0, n) ;
  copyarr(xn, x1, n) ;
  acc[iter] = t ; 
  ++iter ;
 }
 free(x0) ; free(x1) ; free(xn) ;
 *nacc = iter ;
 return t ;
}
double chitest(double *a, double *p, int n) 
/* a is n boxes.  Goodness of fit test to p */
{
 
 double *x, *b, *pp ;
 double y1=0.0, y2=0.0 ;
 int i ;

 ZALLOC(pp, n, double) ;
 if (p != NULL)
  copyarr(p,pp,n) ;
 else 
  vclear(pp, 1.0, n) ;

 y1 = asum(pp,n) ;
 y2 = asum(a,n) ;

 if ( (y1==0.0) || (y2==0.0) ) { 
  free(pp) ;
  return 0.0 ;
 }

 ZALLOC(x,n,double) ;
 ZALLOC(b,n,double) ;


 vst (x, pp, y2/y1, n) ;  /* expected */

 vsp (x, x, .0001, n) ;
 vvm (b, a, x, n) ;  
 vvt (b, b, b, n) ;
 vvd (b, b, x, n) ;

 y1 = asum(b,n) ;

 free(x) ;
 free(b) ;

 return y1 ;

}
示例#10
0
文件: smartrel.c 项目: b1234561/EIG
int main(int argc, char **argv)
{

  char **eglist ;
  int numeg ;
  int i, j, k, pos; 
  int *vv ;
  SNP *cupt, *cupt2 ;
  Indiv *indx ;
  double y1, y2, y ;

  int n0, n1, nkill ;

  int nindiv = 0 ;
  int nignore, numrisks = 1 ;
  SNP **xsnplist  ;
  Indiv **xindlist ;
  int *xindex ;
  int nrows, ncols, m ;
  double *XTX, *cc, *evecs, *ww ;
  double *lambda ;
  double *tvecs ;
  int weightmode = NO ;
  int t ;
  double *xmean, *xfancy ;
  double *ldmat = NULL, *ldmat2 = NULL;
  double *ldvv = NULL, *ldvv2 = NULL, *vv2 = NULL ;
  int chrom,  numclear ;
  double gdis ;
  int outliter, numoutiter, *badlist, nbad ;
  int a, b, n ;
  FILE *outlfile ;
  

  int xblock, blocksize=10000 ;   
  double *tblock ;  

  OUTLINFO *outpt ;
  int *idperm, *vecind ;   // for sort

  readcommands(argc, argv) ;
  printf("## smartrel version: %s\n", WVERSION) ;
  packmode = YES ;
  setomode(&outputmode, omode) ;

  if (parname == NULL) return 0 ;
  if (xchrom == (numchrom+1)) noxdata = NO ;

  if (fstonly) { 
   printf("fstonly\n") ;
   numeigs = 0 ; 
   numoutliter = 0 ;
   numoutiter = 0 ;
   outputname = NULL ;
   snpeigname = NULL ;
  }

  if (fancynorm) printf("norm used\n\n") ;
  else printf("no norm used\n\n") ;

  nostatslim = MAX(nostatslim, 3) ;

  outlfile = ofile = stdout; 

  if (outputname != NULL)  openit(outputname, &ofile, "w") ;
  if (outliername != NULL) openit(outliername, &outlfile, "w") ;
  if (fstdetailsname != NULL) openit(fstdetailsname, &fstdetails, "w") ;

  numsnps = 
    getsnps(snpname, &snpmarkers, 0.0, badsnpname, &nignore, numrisks) ;

  numindivs = getindivs(indivname, &indivmarkers) ;
  k = getgenos(genotypename, snpmarkers, indivmarkers, 
    numsnps, numindivs, nignore) ;


  if (poplistname != NULL) 
  { 
    ZALLOC(eglist, numindivs, char *) ; 
    numeg = loadlist(eglist, poplistname) ;
    seteglist(indivmarkers, numindivs, poplistname);
  }
  else
  {
    setstatus(indivmarkers, numindivs, NULL) ;
    ZALLOC(eglist, MAXPOPS, char *) ;
    numeg = makeeglist(eglist, MAXPOPS, indivmarkers, numindivs) ;
  }
  for (i=0; i<numeg; i++) 
  {  
    /* printf("%3d %s\n",i, eglist[i]) ; */
  }

  nindiv=0 ;
  for (i=0; i<numindivs; i++) 
  {
    indx = indivmarkers[i] ;
    if(indx -> affstatus == YES) ++nindiv  ;
  }

  for (i=0; i<numsnps; i++)  
  {  
    cupt = snpmarkers[i] ; 
    chrom = cupt -> chrom ;
    if ((noxdata) && (chrom == (numchrom+1))) cupt-> ignore = YES ;
    if (chrom == 0) cupt -> ignore = YES ;
    if (chrom > (numchrom+1)) cupt -> ignore = YES ;
  }
  for (i=0; i<numsnps; i++)  
  {
    cupt = snpmarkers[i] ; 
    pos = nnint(cupt -> physpos) ;
    if ((xchrom>0) && (cupt -> chrom != xchrom)) cupt -> ignore = YES ;
    if ((xchrom > 0) && (pos < lopos)) cupt -> ignore = YES ;
    if ((xchrom > 0) && (pos > hipos)) cupt -> ignore = YES ;
    if (cupt -> ignore) continue ;
    if (numvalidgtx(indivmarkers, cupt, YES) <= 1) 
    { 
      printf("nodata: %20s\n", cupt -> ID) ;
      cupt -> ignore = YES ;
    }
  }

  if (killr2) {
   nkill = killhir2(snpmarkers, numsnps, numindivs, r2physlim, r2genlim, r2thresh) ;
   if (nkill>0) printf("killhir2.  number of snps killed: %d\n", nkill) ;
  }

  ZALLOC(vv, numindivs, int) ;
  numvalidgtallind(vv, snpmarkers, numsnps,  numindivs) ; 
  for (i=0; i<numindivs; ++i)  { 
  if (vv[i] == 0) {
    indx = indivmarkers[i] ;
    indx -> ignore = YES ; 
   }
  }
  free(vv) ;

  numsnps = rmsnps(snpmarkers, numsnps, NULL) ;  //  rid ignorable snps

   
  if (missingmode) 
  {
    setmiss(snpmarkers, numsnps) ;
    fancynorm = NO ;
  }

  if  (weightname != NULL)   
  {  
    weightmode = YES ;
    getweights(weightname, snpmarkers, numsnps) ;
  }
  if (ldregress>0) 
  {  
    ZALLOC(ldvv,  ldregress*numindivs, double) ;
    ZALLOC(ldvv2,  ldregress*numindivs, double) ;
    ZALLOC(vv2,  numindivs, double) ;
    ZALLOC(ldmat,  ldregress*ldregress, double) ;
    ZALLOC(ldmat2,  ldregress*ldregress, double) ;
    setidmat(ldmat, ldregress) ;         
    vst(ldmat, ldmat, 1.0e-6, ldregress*ldregress) ;
  }

  ZALLOC(xindex, numindivs, int) ;
  ZALLOC(xindlist, numindivs, Indiv *) ;
  ZALLOC(xsnplist, numsnps, SNP *) ;

  if (popsizelimit > 0) 
  {  
    setplimit(indivmarkers, numindivs, eglist, numeg, popsizelimit) ; 
  }

  nrows = loadindx(xindlist, xindex, indivmarkers, numindivs) ;
  ncols = loadsnpx(xsnplist, snpmarkers, numsnps, indivmarkers) ;
  printf("number of samples used: %d number of snps used: %d\n", nrows, ncols) ;

/**
  cupt = xsnplist[0] ;
  for (j=0; j<nrows; ++j) {  
   k = xindex[j] ;
   g = getgtypes(cupt, k) ;
   indx = indivmarkers[k] ;
   t = indxindex(eglist, numeg, indx -> egroup) ;
   printf("yy1 %20s %20s %20s %d %d %d\n", cupt ->ID, indx -> ID, indx -> egroup, j, k, g) ;
  }
  printf("yya: ") ; printimat(xindex, 1, nrows) ;
  printf("zzindxa:  %s\n", indivmarkers[230] -> egroup) ;
*/

  /* printf("## nrows: %d  ncols  %d\n", nrows, ncols) ; */
  ZALLOC(xmean, ncols, double) ;
  ZALLOC(xfancy, ncols, double) ;
  ZALLOC(XTX, nrows*nrows, double) ;
  ZALLOC(evecs, nrows*nrows, double) ;
  ZALLOC(tvecs, nrows*nrows, double) ;
  ZALLOC(lambda, nrows, double) ;
  ZALLOC(cc, nrows, double) ;
  ZALLOC(ww, nrows, double) ;
  ZALLOC(badlist, nrows, int) ;

  blocksize = MIN(blocksize, ncols) ; 
  ZALLOC(tblock, nrows*blocksize, double) ;

  // xfancy is multiplier for column xmean is mean to take off
  // badlist is list of rows to delete (outlier removal) 

  numoutiter = 1 ;  

  if (numoutliter>=1) 
  {
    numoutiter = numoutliter+1 ;
    ZALLOC(outinfo, nrows,  OUTLINFO *) ;  
    for (k=0; k<nrows; k++) 
    {  
      ZALLOC(outinfo[k], 1, OUTLINFO) ;
    }
    /* fprintf(outlfile, "##%18s %4s %6s %9s\n", "ID", "iter","eigvec", "score") ; */
  }

  for (outliter = 1; outliter <= numoutiter ; ++outliter)  {
    if (fstonly) { 
     setidmat(XTX, nrows) ;
     vclear(lambda, 1.0, nrows) ;
     break ;
    }
    if (outliter>1) {
     ncols = loadsnpx(xsnplist, snpmarkers, numsnps, indivmarkers) ;
    }
    vzero(XTX, nrows*nrows) ;
    vzero(tblock, nrows*blocksize) ;
    xblock = 0 ; 

    vzero(xmean, ncols) ;
    vclear(xfancy, 1.0, ncols) ;

    for (i=0; i<ncols; i++) 
    { 
      cupt = xsnplist[i] ;
      chrom = cupt -> chrom ;
      getcolxz(cc, cupt, xindex, nrows, i, xmean, xfancy, &n0, &n1) ;
      t = MIN(n0, n1) ; 

      if (t <= minallelecnt)  {  
       cupt -> ignore = YES ;
       vzero(cc, nrows) ; 
      }

      if (weightmode) 
      {
        vst(cc, cc, xsnplist[i] -> weight, nrows) ;
      }
      if (ldregress>0) 
      {  
        numclear = 0 ;
        for (k=1; k<= ldregress; ++k)  
        {  
          j = i-k ;  
          if (j<0) 
          { 
            numclear = ldregress-k+1 ; 
            break ;
          }
          cupt2 = xsnplist[j] ;  
          if (cupt2 -> chrom != chrom) gdis = ldlimit + 1.0 ; 
          else gdis = cupt -> genpos - cupt2 -> genpos ;
          if (gdis>=ldlimit) 
          {   
            numclear = ldregress-k+1 ; 
            break ;
          }
        }
        if (numclear>0) clearld(ldmat, ldvv, ldregress, nrows, numclear) ; 
        ldreg(ldmat, ldmat2, cc, vv2, ldvv, ldvv2, ldregress, nrows) ;
        copyarr(ldmat2, ldmat, ldregress*ldregress) ;
        copyarr(vv2, cc, nrows) ;
        copyarr(ldvv2, ldvv, ldregress*nrows) ;
      }
      copyarr(cc, tblock+xblock*nrows, nrows) ;
      ++xblock ; 

/** this is the key code to parallelize */
      if (xblock==blocksize) 
      {  
        domult(tvecs, tblock, xblock, nrows) ;
        vvp(XTX, XTX, tvecs, nrows*nrows) ;
        xblock = 0 ;
        vzero(tblock, nrows*blocksize) ;
      }
    }

    if (xblock>0) 
    { 
     domult(tvecs, tblock, xblock, nrows) ;
     vvp(XTX, XTX, tvecs, nrows*nrows) ;
    }
    symit(XTX, nrows) ;

    /**
    a = 0; b=0 ;
    printf("zz1 %12.6f ", XTX[a*nrows+b]) ;
    a = nrows-1; b=nrows-1 ;
    printf(" %12.6f %15.9g\n", XTX[a*nrows+b], asum(XTX, nrows*nrows)) ;
    */

    if (verbose) 
    {
      printdiag(XTX, nrows) ;
    }

    y = trace(XTX, nrows) / (double) (nrows-1) ;
    if (isnan(y)) fatalx("bad XTX matrix\n") ;
    /* printf("trace:  %9.3f\n", y) ; */
    if (y<=0.0) fatalx("XTX has zero trace (perhaps no data)\n") ;
    vst(XTX, XTX, 1.0/y, nrows * nrows) ;
/// mean eigenvalue is 1
    eigvecs(XTX, lambda, evecs, nrows) ;
// eigenvalues are in decreasing order 

    if (outliter > numoutliter) break ;  
    // last pass skips outliers 
    numoutleigs = MIN(numoutleigs, nrows-1) ;
    nbad = ridoutlier(evecs, nrows, numoutleigs, outlthresh, badlist, outinfo) ;
    if (nbad == 0) break ; 
    for (i=0; i<nbad; i++) 
    {  
      j = badlist[i] ;
      indx = xindlist[j] ;
      outpt = outinfo[j] ;
      fprintf(outlfile, "REMOVED outlier %s iter %d evec %d sigmage %.3f\n", indx -> ID, outliter, outpt -> vecno, outpt -> score) ;
      indx -> ignore = YES ;
    }
    nrows = loadindx(xindlist, xindex, indivmarkers, numindivs) ;
    printf("number of samples after outlier removal: %d\n", nrows) ;
  }

  if (outliername != NULL) fclose(outlfile) ;

  m = numgtz(lambda, nrows)  ;
  /* printf("matrix rank: %d\n", m) ; */
  if (m==0) fatalx("no data\n") ;

/** smartrel code */
  for (i=0; i<numeigs; i++) {  
   y = sqrt(lambda[i]) ;
   vst(ww, evecs+i*nrows, y, nrows) ;               
   subouter(XTX, ww, nrows) ;
  }
  free(tvecs) ; 

  n = 0 ;
  ZALLOC(vecind, nrows*nrows/2, int) ; 
  for (i=0; i<nrows; i++) { 
   for (j=i+1; j<nrows; j++) { 
    k = i*nrows + j ; 
    y1 = XTX[i*nrows+i] ;
    y2 = XTX[j*nrows+j] ;
    y = XTX[k]/sqrt(y1*y2) ;
    y += 1/(double)(nrows-1);
    if (y<relthresh) continue ;
    vecind[n] = k ; 
    evecs[n] = -y ;
    ++n ;
   }
  }
  free(XTX) ; 
  if (n==0) { 
   printf("## nothing above relthresh!\n") ;
   printf("##end of smartrel run\n") ;
   return 0 ;
  }
  ZALLOC(idperm, n, int) ; 
  sortit(evecs, idperm, n) ;
  for (i=0; i<n; i++) {  
   j = idperm[i] ;
   k = vecind[j] ;
   a = k/nrows ; 
   b = k%nrows ;
   printf("rel: %20s ",  xindlist[a] ->ID) ;
   printf("%20s ",  xindlist[b] ->ID) ;
   printf(" %9.3f", -evecs[i]) ;
   printnl() ;
  }
  
  printf("##end of smartrel run\n") ;
  return 0 ;
}
示例#11
0
vmain()
{
	register int c, cnt, i;
	char esave[TUBECOLS];
	char *oglobp;
	char d;
	line *addr;
	int ind, nlput;
	int shouldpo = 0;
	int onumber, olist, (*OPline)(), (*OPutchar)();

	vch_mac = VC_NOTINMAC;

	/*
	 * If we started as a vi command (on the command line)
	 * then go process initial commands (recover, next or tag).
	 */
	if (initev) {
		oglobp = globp;
		globp = initev;
		hadcnt = cnt = 0;
		i = tchng;
		addr = dot;
		goto doinit;
	}

	/*
	 * NB:
	 *
	 * The current line is always in the line buffer linebuf,
	 * and the cursor at the position cursor.  You should do
	 * a vsave() before moving off the line to make sure the disk
	 * copy is updated if it has changed, and a getDOT() to get
	 * the line back if you mung linebuf.  The motion
	 * routines in ex_vwind.c handle most of this.
	 */
	for (;;) {
		/*
		 * Decode a visual command.
		 * First sync the temp file if there has been a reasonable
		 * amount of change.  Clear state for decoding of next
		 * command.
		 */
		TSYNC();
		vglobp = 0;
		vreg = 0;
		hold = 0;
		seenprompt = 1;
		wcursor = 0;
		Xhadcnt = hadcnt = 0;
		Xcnt = cnt = 1;
		splitw = 0;
		if (i = holdupd) {
			if (state == VISUAL)
				ignore(peekkey());
			holdupd = 0;
/*
			if (LINE(0) < ZERO) {
				vclear();
				vcnt = 0;
				i = 3;
			}
*/
			if (state != VISUAL) {
				vcnt = 0;
				vsave();
				vrepaint(cursor);
			} else if (i == 3)
				vredraw(WTOP);
			else
				vsync(WTOP);
			vfixcurs();
		}

		/*
		 * Gobble up counts and named buffer specifications.
		 */
		for (;;) {
looptop:
#ifdef MDEBUG
			if (trace)
				fprintf(trace, "pc=%c",peekkey());
#endif
			if (isdigit(peekkey()) && peekkey() != '0') {
				hadcnt = 1;
				cnt = vgetcnt();
				forbid (cnt <= 0);
			}
			if (peekkey() != '"')
				break;
			ignore(getkey()), c = getkey();
			/*
			 * Buffer names be letters or digits.
			 * But not '0' as that is the source of
			 * an 'empty' named buffer spec in the routine
			 * kshift (see ex_temp.c).
			 */
			forbid (c == '0' || !isalpha(c) && !isdigit(c));
			vreg = c;
		}
reread:
		/*
		 * Come to reread from below after some macro expansions.
		 * The call to map allows use of function key pads
		 * by performing a terminal dependent mapping of inputs.
		 */
#ifdef MDEBUG
		if (trace)
			fprintf(trace,"pcb=%c,",peekkey());
#endif
		op = getkey();
		maphopcnt = 0;
		do {
			/*
			 * Keep mapping the char as long as it changes.
			 * This allows for double mappings, e.g., q to #,
			 * #1 to something else.
			 */
			c = op;
			op = map(c,arrows);
#ifdef MDEBUG
			if (trace)
				fprintf(trace,"pca=%c,",c);
#endif
			/*
			 * Maybe the mapped to char is a count. If so, we have
			 * to go back to the "for" to interpret it. Likewise
			 * for a buffer name.
			 */
			if ((isdigit(c) && c!='0') || c == '"') {
				ungetkey(c);
				goto looptop;
			}
			if (!value(REMAP)) {
				c = op;
				break;
			}
			if (++maphopcnt > 256)
				error("Infinite macro loop");
		} while (c != op);

		/*
		 * Begin to build an image of this command for possible
		 * later repeat in the buffer workcmd.  It will be copied
		 * to lastcmd by the routine setLAST
		 * if/when completely specified.
		 */
		lastcp = workcmd;
		if (!vglobp)
			*lastcp++ = c;

		/*
		 * First level command decode.
		 */
		switch (c) {

		/*
		 * ^L		Clear screen e.g. after transmission error.
		 */

		/*
		 * ^R		Retype screen, getting rid of @ lines.
		 *		If in open, equivalent to ^L.
		 *		On terminals where the right arrow key sends
		 *		^L we make ^R act like ^L, since there is no
		 *		way to get ^L.  These terminals (adm31, tvi)
		 *		are intelligent so ^R is useless.  Soroc
		 *		will probably foul this up, but nobody has
		 *		one of them.
		 */
		case CTRL(l):
		case CTRL(r):
			if (c == CTRL(l) || (KR && *KR==CTRL(l))) {
				vclear();
				vdirty(0, vcnt);
			}
			if (state != VISUAL) {
				/*
				 * Get a clean line, throw away the
				 * memory of what is displayed now,
				 * and move back onto the current line.
				 */
				vclean();
				vcnt = 0;
				vmoveto(dot, cursor, 0);
				continue;
			}
			vredraw(WTOP);
			/*
			 * Weird glitch -- when we enter visual
			 * in a very small window we may end up with
			 * no lines on the screen because the line
			 * at the top is too long.  This forces the screen
			 * to be expanded to make room for it (after
			 * we have printed @'s ick showing we goofed).
			 */
			if (vcnt == 0)
				vrepaint(cursor);
			vfixcurs();
			continue;

		/*
		 * $		Escape just cancels the current command
		 *		with a little feedback.
		 */
		case ESCAPE:
			beep();
			continue;

		/*
		 * @   		Macros. Bring in the macro and put it
		 *		in vmacbuf, point vglobp there and punt.
		 */
		 case '@':
			c = getesc();
			if (c == 0)
				continue;
			if (c == '@')
				c = lastmac;
			if (isupper(c))
				c = tolower(c);
			forbid(!islower(c));
			lastmac = c;
			vsave();
			CATCH
				char tmpbuf[BUFSIZ];

				regbuf(c,tmpbuf,sizeof(vmacbuf));
				macpush(tmpbuf, 1);
			ONERR
				lastmac = 0;
				splitw = 0;
				getDOT();
				vrepaint(cursor);
				continue;
			ENDCATCH
			vmacp = vmacbuf;
			goto reread;

		/*
		 * .		Repeat the last (modifying) open/visual command.
		 */
		case '.':
			/*
			 * Check that there was a last command, and
			 * take its count and named buffer unless they
			 * were given anew.  Special case if last command
			 * referenced a numeric named buffer -- increment
			 * the number and go to a named buffer again.
			 * This allows a sequence like "1pu.u.u...
			 * to successively look for stuff in the kill chain
			 * much as one does in EMACS with C-Y and M-Y.
			 */
			forbid (lastcmd[0] == 0);
			if (hadcnt)
				lastcnt = cnt;
			if (vreg)
				lastreg = vreg;
			else if (isdigit(lastreg) && lastreg < '9')
				lastreg++;
			vreg = lastreg;
			cnt = lastcnt;
			hadcnt = lasthad;
			vglobp = lastcmd;
			goto reread;

		/*
		 * ^U		Scroll up.  A count sticks around for
		 *		future scrolls as the scroll amount.
		 *		Attempt to hold the indentation from the
		 *		top of the screen (in logical lines).
		 *
		 * BUG:		A ^U near the bottom of the screen
		 *		on a dumb terminal (which can't roll back)
		 *		causes the screen to be cleared and then
		 *		redrawn almost as it was.  In this case
		 *		one should simply move the cursor.
		 */
		case CTRL(u):
			if (hadcnt)
				vSCROLL = cnt;
			cnt = vSCROLL;
			if (state == VISUAL)
				ind = vcline, cnt += ind;
			else
				ind = 0;
			vmoving = 0;
			vup(cnt, ind, 1);
			vnline(NOSTR);
			continue;

		/*
		 * ^D		Scroll down.  Like scroll up.
		 */
		case CTRL(d):
#ifdef TRACE
		if (trace)
			fprintf(trace, "before vdown in ^D, dot=%d, wdot=%d, dol=%d\n", lineno(dot), lineno(wdot), lineno(dol));
#endif
			if (hadcnt)
				vSCROLL = cnt;
			cnt = vSCROLL;
			if (state == VISUAL)
				ind = vcnt - vcline - 1, cnt += ind;
			else
				ind = 0;
			vmoving = 0;
			vdown(cnt, ind, 1);
#ifdef TRACE
		if (trace)
			fprintf(trace, "before vnline in ^D, dot=%d, wdot=%d, dol=%d\n", lineno(dot), lineno(wdot), lineno(dol));
#endif
			vnline(NOSTR);
#ifdef TRACE
		if (trace)
			fprintf(trace, "after vnline in ^D, dot=%d, wdot=%d, dol=%d\n", lineno(dot), lineno(wdot), lineno(dol));
#endif
			continue;

		/*
		 * ^E		Glitch the screen down (one) line.
		 *		Cursor left on same line in file.
		 */
		case CTRL(e):
			if (state != VISUAL)
				continue;
			if (!hadcnt)
				cnt = 1;
			/* Bottom line of file already on screen */
			forbid(lineDOL()-lineDOT() <= vcnt-1-vcline);
			ind = vcnt - vcline - 1 + cnt;
			vdown(ind, ind, 1);
			vnline(cursor);
			continue;

		/*
		 * ^Y		Like ^E but up
		 */
		case CTRL(y):
			if (state != VISUAL)
				continue;
			if (!hadcnt)
				cnt = 1;
			forbid(lineDOT()-1<=vcline); /* line 1 already there */
			ind = vcline + cnt;
			vup(ind, ind, 1);
			vnline(cursor);
			continue;


		/*
		 * m		Mark position in mark register given
		 *		by following letter.  Return is
		 *		accomplished via ' or `; former
		 *		to beginning of line where mark
		 *		was set, latter to column where marked.
		 */
		case 'm':
			/*
			 * Getesc is generally used when a character
			 * is read as a latter part of a command
			 * to allow one to hit rubout/escape to cancel
			 * what you have typed so far.  These characters
			 * are mapped to 0 by the subroutine.
			 */
			c = getesc();
			if (c == 0)
				continue;

			/*
			 * Markreg checks that argument is a letter
			 * and also maps ' and ` to the end of the range
			 * to allow '' or `` to reference the previous
			 * context mark.
			 */
			c = markreg(c);
			forbid (c == 0);
			vsave();
			names[c - 'a'] = (*dot &~ 01);
			ncols[c - 'a'] = cursor;
			anymarks = 1;
			continue;

		/*
		 * ^F		Window forwards, with 2 lines of continuity.
		 *		Count repeats.
		 */
		case CTRL(f):
			vsave();
			if (vcnt > 2) {
				addr = dot + (vcnt - vcline) - 2 + (cnt-1)*basWLINES;
				forbid(addr > dol);
				dot = addr;
				vcnt = vcline = 0;
			}
			vzop(0, 0, '+');
			continue;

		/*
		 * ^B		Window backwards, with 2 lines of continuity.
		 *		Inverse of ^F.
		 */
		case CTRL(b):
			vsave();
			if (one + vcline != dot && vcnt > 2) {
				addr = dot - vcline - 2 + (cnt-1)*basWLINES;
				forbid (addr <= zero);
				dot = addr;
				vcnt = vcline = 0;
			}
			vzop(0, 0, '^');
			continue;

		/*
		 * z		Screen adjustment, taking a following character:
		 *			z<CR>		current line to top
		 *			z<NL>		like z<CR>
		 *			z-		current line to bottom
		 *		also z+, z^ like ^F and ^B.
		 *		A preceding count is line to use rather
		 *		than current line.  A count between z and
		 *		specifier character changes the screen size
		 *		for the redraw.
		 *
		 */
		case 'z':
			if (state == VISUAL) {
				i = vgetcnt();
				if (i > 0)
					vsetsiz(i);
				c = getesc();
				if (c == 0)
					continue;
			}
			vsave();
			vzop(hadcnt, cnt, c);
			continue;

		/*
		 * Y		Yank lines, abbreviation for y_ or yy.
		 *		Yanked lines can be put later if no
		 *		changes intervene, or can be put in named
		 *		buffers and put anytime in this session.
		 */
		case 'Y':
			ungetkey('_');
			c = 'y';
			break;

		/*
		 * J		Join lines, 2 by default.  Count is number
		 *		of lines to join (no join operator sorry.)
		 */
		case 'J':
			forbid (dot == dol);
			if (cnt == 1)
				cnt = 2;
			if (cnt > (i = dol - dot + 1))
				cnt = i;
			vsave();
			vmacchng(1);
			setLAST();
			cursor = strend(linebuf);
			vremote(cnt, join, 0);
			notenam = "join";
			vmoving = 0;
			killU();
			vreplace(vcline, cnt, 1);
			if (!*cursor && cursor > linebuf)
				cursor--;
			if (notecnt == 2)
				notecnt = 0;
			vrepaint(cursor);
			continue;

		/*
		 * S		Substitute text for whole lines, abbrev for c_.
		 *		Count is number of lines to change.
		 */
		case 'S':
			ungetkey('_');
			c = 'c';
			break;

		/*
		 * O		Create a new line above current and accept new
		 *		input text, to an escape, there.
		 *		A count specifies, for dumb terminals when
		 *		slowopen is not set, the number of physical
		 *		line space to open on the screen.
		 *
		 * o		Like O, but opens lines below.
		 */
		case 'O':
		case 'o':
			vmacchng(1);
			voOpen(c, cnt);
			continue;

		/*
		 * C		Change text to end of line, short for c$.
		 */
		case 'C':
			if (*cursor) {
				ungetkey('$'), c = 'c';
				break;
			}
			goto appnd;

		/*
		 * ~	Switch case of letter under cursor
		 */
		case '~':
			{
				char mbuf[4];
				setLAST();
				mbuf[0] = 'r';
				mbuf[1] = *cursor;
				mbuf[2] = cursor[1]==0 ? 0 : ' ';
				mbuf[3] = 0;
				if (isalpha(mbuf[1]))
					mbuf[1] ^= ' ';	/* toggle the case */
				macpush(mbuf, 1);
			}
			continue;


		/*
		 * A		Append at end of line, short for $a.
		 */
		case 'A':
			operate('$', 1);
appnd:
			c = 'a';
			/* fall into ... */

		/*
		 * a		Appends text after cursor.  Text can continue
		 *		through arbitrary number of lines.
		 */
		case 'a':
			if (*cursor) {
				if (state == HARDOPEN)
					putchar(*cursor);
				cursor++;
			}
			goto insrt;

		/*
		 * I		Insert at beginning of whitespace of line,
		 *		short for ^i.
		 */
		case 'I':
			operate('^', 1);
			c = 'i';
			/* fall into ... */

		/*
		 * R		Replace characters, one for one, by input
		 *		(logically), like repeated r commands.
		 *
		 * BUG:		This is like the typeover mode of many other
		 *		editors, and is only rarely useful.  Its
		 *		implementation is a hack in a low level
		 *		routine and it doesn't work very well, e.g.
		 *		you can't move around within a R, etc.
		 */
		case 'R':
			/* fall into... */

		/*
		 * i		Insert text to an escape in the buffer.
		 *		Text is arbitrary.  This command reminds of
		 *		the i command in bare teco.
		 */
		case 'i':
insrt:
			/*
			 * Common code for all the insertion commands.
			 * Save for redo, position cursor, prepare for append
			 * at command and in visual undo.  Note that nothing
			 * is doomed, unless R when all is, and save the
			 * current line in a the undo temporary buffer.
			 */
			vmacchng(1);
			setLAST();
			vcursat(cursor);
			prepapp();
			vnoapp();
			doomed = c == 'R' ? 10000 : 0;
			if(FIXUNDO)
				vundkind = VCHNG;
			vmoving = 0;
			CP(vutmp, linebuf);

			/*
			 * If this is a repeated command, then suppress
			 * fake insert mode on dumb terminals which looks
			 * ridiculous and wastes lots of time even at 9600B.
			 */
			if (vglobp)
				hold = HOLDQIK;
			vappend(c, cnt, 0);
			continue;

		/*
		 * ^?		An attention, normally a ^?, just beeps.
		 *		If you are a vi command within ex, then
		 *		two ATTN's will drop you back to command mode.
		 */
		case ATTN:
			beep();
			if (initev || peekkey() != ATTN)
				continue;
			/* fall into... */

		/*
		 * ^\		A quit always gets command mode.
		 */
		case QUIT:
			/*
			 * Have to be careful if we were called
			 *	g/xxx/vi
			 * since a return will just start up again.
			 * So we simulate an interrupt.
			 */
			if (inglobal)
				onintr();
			/* fall into... */

#ifdef notdef
		/*
		 * q		Quit back to command mode, unless called as
		 *		vi on command line in which case dont do it
		 */
		case 'q':	/* quit */
			if (initev) {
				vsave();
				CATCH
					error("Q gets ex command mode, :q leaves vi");
				ENDCATCH
				splitw = 0;
				getDOT();
				vrepaint(cursor);
				continue;
			}
#endif
			/* fall into... */

		/*
		 * Q		Is like q, but always gets to command mode
		 *		even if command line invocation was as vi.
		 */
		case 'Q':
			vsave();
			/*
			 * If we are in the middle of a macro, throw away
			 * the rest and fix up undo.
			 * This code copied from getbr().
			 */
			if (vmacp) {
				vmacp = 0;
				if (inopen == -1)	/* don't screw up undo for esc esc */
					vundkind = VMANY;
				inopen = 1;	/* restore old setting now that macro done */
			}
			return;


		/*
		 * ZZ		Like :x
		 */
		 case 'Z':
			forbid(getkey() != 'Z');
			oglobp = globp;
			globp = "x";
			vclrech(0);
			goto gogo;
			
		/*
		 * P		Put back text before cursor or before current
		 *		line.  If text was whole lines goes back
		 *		as whole lines.  If part of a single line
		 *		or parts of whole lines splits up current
		 *		line to form many new lines.
		 *		May specify a named buffer, or the delete
		 *		saving buffers 1-9.
		 *
		 * p		Like P but after rather than before.
		 */
		case 'P':
		case 'p':
			vmoving = 0;
#ifdef notdef
			forbid (!vreg && value(UNDOMACRO) && inopen < 0);
#endif
			/*
			 * If previous delete was partial line, use an
			 * append or insert to put it back so as to
			 * use insert mode on intelligent terminals.
			 */
			if (!vreg && DEL[0]) {
				forbid ((DEL[0] & (QUOTE|TRIM)) == OVERBUF);
				vglobp = DEL;
				ungetkey(c == 'p' ? 'a' : 'i');
				goto reread;
			}

			/*
			 * If a register wasn't specified, then make
			 * sure there is something to put back.
			 */
			forbid (!vreg && unddol == dol);
			/*
			 * If we just did a macro the whole buffer is in
			 * the undo save area.  We don't want to put THAT.
			 */
			forbid (vundkind == VMANY && undkind==UNDALL);
			vsave();
			vmacchng(1);
			setLAST();
			i = 0;
			if (vreg && partreg(vreg) || !vreg && pkill[0]) {
				/*
				 * Restoring multiple lines which were partial
				 * lines; will leave cursor in middle
				 * of line after shoving restored text in to
				 * split the current line.
				 */
				i++;
				if (c == 'p' && *cursor)
					cursor++;
			} else {
				/*
				 * In whole line case, have to back up dot
				 * for P; also want to clear cursor so
				 * cursor will eventually be positioned
				 * at the beginning of the first put line.
				 */
				cursor = 0;
				if (c == 'P') {
					dot--, vcline--;
					c = 'p';
				}
			}
			killU();

			/*
			 * The call to putreg can potentially
			 * bomb since there may be nothing in a named buffer.
			 * We thus put a catch in here.  If we didn't and
			 * there was an error we would end up in command mode.
			 */
			addr = dol;	/* old dol */
			CATCH
				vremote(1, vreg ? putreg : put, vreg);
			ONERR
				if (vreg == -1) {
					splitw = 0;
					if (op == 'P')
						dot++, vcline++;
					goto pfixup;
				}
			ENDCATCH
			splitw = 0;
			nlput = dol - addr + 1;
			if (!i) {
				/*
				 * Increment undap1, undap2 to make up
				 * for their incorrect initialization in the
				 * routine vremote before calling put/putreg.
				 */
				if (FIXUNDO)
					undap1++, undap2++;
				vcline++;
				nlput--;

				/*
				 * After a put want current line first line,
				 * and dot was made the last line put in code
				 * run so far.  This is why we increment vcline
				 * above and decrease dot here.
				 */
				dot -= nlput - 1;
			}
#ifdef TRACE
			if (trace)
				fprintf(trace, "vreplace(%d, %d, %d), undap1=%d, undap2=%d, dot=%d\n", vcline, i, nlput, lineno(undap1), lineno(undap2), lineno(dot));
#endif
			vreplace(vcline, i, nlput);
			if (state != VISUAL) {
				/*
				 * Special case in open mode.
				 * Force action on the screen when a single
				 * line is put even if it is identical to
				 * the current line, e.g. on YP; otherwise
				 * you can't tell anything happened.
				 */
				vjumpto(dot, cursor, '.');
				continue;
			}
pfixup:
			vrepaint(cursor);
			vfixcurs();
			continue;

		/*
		 * ^^		Return to previous file.
		 *		Like a :e #, and thus can be used after a
		 *		"No Write" diagnostic.
		 */
		case CTRL(^):
			forbid (hadcnt);
			vsave();
			ckaw();
			oglobp = globp;
			if (value(AUTOWRITE))
				globp = "e! #";
			else
				globp = "e #";
			goto gogo;

		/*
		 * ^]		Takes word after cursor as tag, and then does
		 *		tag command.  Read ``go right to''.
		 */
		case CTRL(]):
			grabtag();
			oglobp = globp;
			globp = "tag";
			goto gogo;

		/*
		 * &		Like :&
		 */
		 case '&':
			oglobp = globp;
			globp = "&";
			goto gogo;
			
		/*
		 * ^G		Bring up a status line at the bottom of
		 *		the screen, like a :file command.
		 *
		 * BUG:		Was ^S but doesn't work in cbreak mode
		 */
		case CTRL(g):
			oglobp = globp;
			globp = "file";
gogo:
			addr = dot;
			vsave();
			goto doinit;

#ifdef SIGTSTP
		/*
		 * ^Z:	suspend editor session and temporarily return
		 * 	to shell.  Only works with Berkeley/IIASA process
		 *	control in kernel.
		 */
		case CTRL(z):
			forbid(dosusp == 0 || !ldisc);
			vsave();
			oglobp = globp;
			globp = "stop";
			goto gogo;
#endif

		/*
		 * :		Read a command from the echo area and
		 *		execute it in command mode.
		 */
		case ':':
			forbid (hadcnt);
			vsave();
			i = tchng;
			addr = dot;
			if (readecho(c)) {
				esave[0] = 0;
				goto fixup;
			}
			getDOT();
			/*
			 * Use the visual undo buffer to store the global
			 * string for command mode, since it is idle right now.
			 */
			oglobp = globp; strcpy(vutmp, genbuf+1); globp = vutmp;
doinit:
			esave[0] = 0;
			fixech();

			/*
			 * Have to finagle around not to lose last
			 * character after this command (when run from ex
			 * command mode).  This is clumsy.
			 */
			d = peekc; ungetchar(0);
			if (shouldpo) {
				/*
				 * So after a "Hit return..." ":", we do
				 * another "Hit return..." the next time
				 */
				pofix();
				shouldpo = 0;
			}
			CATCH
				/*
				 * Save old values of options so we can
				 * notice when they change; switch into
				 * cooked mode so we are interruptible.
				 */
				onumber = value(NUMBER);
				olist = value(LIST);
				OPline = Pline;
				OPutchar = Putchar;
#ifndef CBREAK
				vcook();
#endif
				commands(1, 1);
				if (dot == zero && dol > zero)
					dot = one;
#ifndef CBREAK
				vraw();
#endif
			ONERR
#ifndef CBREAK
				vraw();
#endif
				copy(esave, vtube[WECHO], TUBECOLS);
			ENDCATCH
			fixol();
			Pline = OPline;
			Putchar = OPutchar;
			ungetchar(d);
			globp = oglobp;

			/*
			 * If we ended up with no lines in the buffer, make
			 * a line, and don't consider the buffer changed.
			 */
			if (dot == zero) {
				fixzero();
				sync();
			}
			splitw = 0;

			/*
			 * Special case: did list/number options change?
			 */
			if (onumber != value(NUMBER))
				setnumb(value(NUMBER));
			if (olist != value(LIST))
				setlist(value(LIST));

fixup:
			/*
			 * If a change occurred, other than
			 * a write which clears changes, then
			 * we should allow an undo even if .
			 * didn't move.
			 *
			 * BUG: You can make this wrong by
			 * tricking around with multiple commands
			 * on one line of : escape, and including
			 * a write command there, but its not
			 * worth worrying about.
			 */
			if (FIXUNDO && tchng && tchng != i)
				vundkind = VMANY, cursor = 0;

			/*
			 * If we are about to do another :, hold off
			 * updating of screen.
			 */
			if (vcnt < 0 && Peekkey == ':') {
				getDOT();
				shouldpo = 1;
				continue;
			}
			shouldpo = 0;

			/*
			 * In the case where the file being edited is
			 * new; e.g. if the initial state hasn't been
			 * saved yet, then do so now.
			 */
			if (unddol == truedol) {
				vundkind = VNONE;
				Vlines = lineDOL();
				if (!inglobal)
					savevis();
				addr = zero;
				vcnt = 0;
				if (esave[0] == 0)
					copy(esave, vtube[WECHO], TUBECOLS);
			}

			/*
			 * If the current line moved reset the cursor position.
			 */
			if (dot != addr) {
				vmoving = 0;
				cursor = 0;
			}

			/*
			 * If current line is not on screen or if we are
			 * in open mode and . moved, then redraw.
			 */
			i = vcline + (dot - addr);
			if (i < 0 || i >= vcnt && i >= -vcnt || state != VISUAL && dot != addr) {
				if (state == CRTOPEN)
					vup1();
				if (vcnt > 0)
					vcnt = 0;
				vjumpto(dot, (char *) 0, '.');
			} else {
				/*
				 * Current line IS on screen.
				 * If we did a [Hit return...] then
				 * restore vcnt and clear screen if in visual
				 */
				vcline = i;
				if (vcnt < 0) {
					vcnt = -vcnt;
					if (state == VISUAL)
						vclear();
					else if (state == CRTOPEN) {
						vcnt = 0;
					}
				}

				/*
				 * Limit max value of vcnt based on $
				 */
				i = vcline + lineDOL() - lineDOT() + 1;
				if (i < vcnt)
					vcnt = i;
				
				/*
				 * Dirty and repaint.
				 */
				vdirty(0, LINES);
				vrepaint(cursor);
			}

			/*
			 * If in visual, put back the echo area
			 * if it was clobberred.
			 */
			if (state == VISUAL) {
				int sdc = destcol, sdl = destline;

				splitw++;
				vigoto(WECHO, 0);
				for (i = 0; i < TUBECOLS - 1; i++) {
					if (esave[i] == 0)
						break;
					vputchar(esave[i]);
				}
				splitw = 0;
				vgoto(sdl, sdc);
			}
			continue;

		/*
		 * u		undo the last changing command.
		 */
		case 'u':
			vundo(1);
			continue;

		/*
		 * U		restore current line to initial state.
		 */
		case 'U':
			vUndo();
			continue;

fonfon:
			beep();
			vmacp = 0;
			inopen = 1;	/* might have been -1 */
			continue;
		}

		/*
		 * Rest of commands are decoded by the operate
		 * routine.
		 */
		operate(c, cnt);
	}
}
示例#12
0
void
vzero(double *a,  int n)
{
    vclear(a, 0.0, n) ;
}
示例#13
0
/*
 * Do a z operation.
 * Code here is rather long, and very uninteresting.
 */
void 
vzop(int hadcnt, int cnt, register int c)
{
	register line *addr;

	if (state != VISUAL) {
		/*
		 * Z from open; always like a z=.
		 * This code is a mess and should be cleaned up.
		 */
		vmoveitup(1, 1);
		vgoto(outline, 0);
		ostop(normf);
		setoutt();
		addr2 = dot;
		vclear();
		destline = WECHO;
		zop2(Xhadcnt ? Xcnt : value(WINDOW) - 1, '=');
		if (state == CRTOPEN)
			putnl();
		putNFL();
		termreset();
		Outchar = vputchar;
		ignore(ostart());
		vcnt = 0;
		outline = destline = 0;
		vjumpto(dot, cursor, 0);
		return;
	}
	if (hadcnt) {
		addr = zero + cnt;
		if (addr < one)
			addr = one;
		if (addr > dol)
			addr = dol;
		markit(addr);
	} else
		switch (c) {

		case '+':
			addr = dot + vcnt - vcline;
			break;

		case '^':
			addr = dot - vcline - 1;
			forbid (addr < one);
			c = '-';
			break;

		default:
			addr = dot;
			break;
		}
	switch (c) {

	case '.':
	case '-':
		break;

	case '^':
		forbid (addr <= one);
		break;

	case '+':
		forbid (addr >= dol);
		/* fall into ... */

	case CR:
	case NL:
		c = CR;
		break;

	default:
		beep();
		return;
	}
	vmoving = 0;
	vjumpto(addr, NOSTR, c);
}
示例#14
0
文件: ex_cmds.c 项目: n-t-roff/ex-3.6
/*
 * Main loop for command mode command decoding.
 * A few commands are executed here, but main function
 * is to strip command addresses, do a little address oriented
 * processing and call command routines to do the real work.
 */
void
commands(bool noprompt, bool exitoneof)
{
	register line *addr;
	register int c;
	register int lchng;
	int given;
	int seensemi;
	int cnt;
	bool hadpr;

	resetflav();
	nochng();
	for (;;) {
		/*
		 * If dot at last command
		 * ended up at zero, advance to one if there is a such.
		 */
		if (dot <= zero) {
			dot = zero;
			if (dol > zero)
				dot = one;
		}
		shudclob = 0;

		/*
		 * If autoprint or trailing print flags,
		 * print the line at the specified offset
		 * before the next command.
		 */
		if (pflag ||
		    (lchng != chng && value(AUTOPRINT) && !inglobal && !inopen && endline)) {
			pflag = 0;
			nochng();
			if (dol != zero) {
				addr1 = addr2 = dot + poffset;
				if (addr1 < one || addr1 > dol)
error("Offset out-of-bounds|Offset after command too large");
				setdot1();
				goto print;
			}
		}
		nochng();

		/*
		 * Print prompt if appropriate.
		 * If not in global flush output first to prevent
		 * going into pfast mode unreasonably.
		 */
		if (inglobal == 0) {
			flush();
			if (!hush && value(PROMPT) && !globp && !noprompt && endline) {
				ex_putchar(':');
				hadpr = 1;
			}
			TSYNC();
		}

		/*
		 * Gobble up the address.
		 * Degenerate addresses yield ".".
		 */
		addr2 = 0;
		given = seensemi = 0;
		do {
			addr1 = addr2;
			addr = address(0);
			c = getcd();
			if (addr == 0) {
				if (c == ',')
					addr = dot;
				else if (addr1 != 0) {
					addr2 = dot;
					break;
				} else
					break;
			}
			addr2 = addr;
			given++;
			if (c == ';') {
				c = ',';
				dot = addr;
				seensemi = 1;
			}
		} while (c == ',');
		if (c == '%') {
			/* %: same as 1,$ */
			addr1 = one;
			addr2 = dol;
			given = 2;
			c = ex_getchar();
		}
		if (addr1 == 0)
			addr1 = addr2;
		if (c == ':')
			c = ex_getchar();

		/*
		 * Set command name for special character commands.
		 */
		tailspec(c);

		/*
		 * If called via : escape from open or visual, limit
		 * the set of available commands here to save work below.
		 */
		if (inopen) {
			if (c=='\n' || c=='\r' || c==CTRL('d') || c==EOF) {
				if (addr2)
					dot = addr2;
				if (c == EOF)
					return;
				continue;
			}
			if (any(c, "o"))
notinvis:
				tailprim(Command, 1, 1);
		}
		switch (c) {

		case 'a':

			switch(peekchar()) {
			case 'b':
/* abbreviate */
				tail("abbreviate");
				setnoaddr();
				mapcmd(0, 1);
				anyabbrs = 1;
				continue;
			case 'r':
/* args */
				tail("args");
				setnoaddr();
				eol();
				pargs();
				continue;
			}

/* append */
			if (inopen)
				goto notinvis;
			tail("append");
			setdot();
			aiflag = exclam();
			ex_newline();
			vmacchng(0);
			deletenone();
			setin(addr2);
			inappend = 1;
			ignore(append(gettty, addr2));
			inappend = 0;
			nochng();
			continue;

		case 'c':
			switch (peekchar()) {

/* copy */
			case 'o':
				tail("copy");
				vmacchng(0);
				move();
				continue;

#ifdef CHDIR
/* cd */
			case 'd':
				tail("cd");
				goto changdir;

/* chdir */
			case 'h':
				ignchar();
				if (peekchar() == 'd') {
					register char *p;
					tail2of("chdir");
changdir:
					if (savedfile[0] == '/' || !value(WARN))
						ignore(exclam());
					else
						ignore(quickly());
					if (skipend()) {
						p = getenv("HOME");
						if (p == NULL)
							error("Home directory unknown");
					} else
						getone(), p = file;
					eol();
					if (chdir(p) < 0)
						filioerr(p);
					if (savedfile[0] != '/')
						edited = 0;
					continue;
				}
				if (inopen)
					tailprim("change", 2, 1);
				tail2of("change");
				break;

#endif
			default:
				if (inopen)
					goto notinvis;
				tail("change");
				break;
			}
/* change */
			aiflag = exclam();
			setCNL();
			vmacchng(0);
			setin(addr1);
			delete(0);
			inappend = 1;
			ignore(append(gettty, addr1 - 1));
			inappend = 0;
			nochng();
			continue;

/* delete */
		case 'd':
			/*
			 * Caution: dp and dl have special meaning already.
			 */
			tail("delete");
			c = cmdreg();
			setCNL();
			vmacchng(0);
			if (c)
				YANKreg(c);
			delete(0);
			appendnone();
			continue;

/* edit */
/* ex */
		case 'e':
			tail(peekchar() == 'x' ? "ex" : "edit");
editcmd:
			if (!exclam() && chng)
				c = 'E';
			filename(c);
			if (c == 'E') {
				ungetchar(lastchar());
				ignore(quickly());
			}
			setnoaddr();
doecmd:
			init();
			addr2 = zero;
			laste++;
			ex_sync();
			rop(c);
			nochng();
			continue;

/* file */
		case 'f':
			tail("file");
			setnoaddr();
			filename(c);
			noonl();
/*
			synctmp();
*/
			continue;

/* global */
		case 'g':
			tail("global");
			global(!exclam());
			nochng();
			continue;

/* insert */
		case 'i':
			if (inopen)
				goto notinvis;
			tail("insert");
			setdot();
			nonzero();
			aiflag = exclam();
			ex_newline();
			vmacchng(0);
			deletenone();
			setin(addr2);
			inappend = 1;
			ignore(append(gettty, addr2 - 1));
			inappend = 0;
			if (dot == zero && dol > zero)
				dot = one;
			nochng();
			continue;

/* join */
		case 'j':
			tail("join");
			c = exclam();
			setcount();
			nonzero();
			ex_newline();
			vmacchng(0);
			if (given < 2 && addr2 != dol)
				addr2++;
			join(c);
			continue;

/* k */
		case 'k':
casek:
			pastwh();
			c = ex_getchar();
			if (endcmd(c))
				serror("Mark what?|%s requires following letter", Command);
			ex_newline();
			if (!islower(c))
				error("Bad mark|Mark must specify a letter");
			setdot();
			nonzero();
			names[c - 'a'] = *addr2 &~ 01;
			anymarks = 1;
			continue;

/* list */
		case 'l':
			tail("list");
			setCNL();
			ignorf(setlist(1));
			pflag = 0;
			goto print;

		case 'm':
			if (peekchar() == 'a') {
				ignchar();
				if (peekchar() == 'p') {
/* map */
					tail2of("map");
					setnoaddr();
					mapcmd(0, 0);
					continue;
				}
/* mark */
				tail2of("mark");
				goto casek;
			}
/* move */
			tail("move");
			vmacchng(0);
			move();
			continue;

		case 'n':
			if (peekchar() == 'u') {
				tail("number");
				goto numberit;
			}
/* next */
			tail("next");
			setnoaddr();
			ckaw();
			ignore(quickly());
			if (getargs())
				makargs();
			next();
			c = 'e';
			filename(c);
			goto doecmd;

/* open */
		case 'o':
			tail("open");
			oop();
			pflag = 0;
			nochng();
			continue;

		case 'p':
		case 'P':
			switch (peekchar()) {

/* put */
			case 'u':
				tail("put");
				setdot();
				c = cmdreg();
				eol();
				vmacchng(0);
				if (c)
					putreg(c);
				else
					put();
				continue;

			case 'r':
				ignchar();
				if (peekchar() == 'e') {
/* preserve */
					tail2of("preserve");
					eol();
					if (preserve() == 0)
						error("Preserve failed!");
					else
						error("File preserved.");
				}
				tail2of("print");
				break;

			default:
				tail("print");
				break;
			}
/* print */
			setCNL();
			pflag = 0;
print:
			nonzero();
			if (CL && span() > EX_LINES) {
				flush1();
				vclear();
			}
			plines(addr1, addr2, 1);
			continue;

/* quit */
		case 'q':
			tail("quit");
			setnoaddr();
			c = quickly();
			eol();
			if (!c)
quit:
				nomore();
			if (inopen) {
				vgoto(WECHO, 0);
				if (!ateopr())
					vnfl();
				else {
					tostop();
				}
				flush();
				setty(normf);
			}
			cleanup(1);
			ex_exit(0);

		case 'r':
			if (peekchar() == 'e') {
				ignchar();
				switch (peekchar()) {

/* rewind */
				case 'w':
					tail2of("rewind");
					setnoaddr();
					if (!exclam()) {
						ckaw();
						if (chng && dol > zero)
							error("No write@since last chage (:rewind! overrides)");
					}
					eol();
					erewind();
					next();
					c = 'e';
					ungetchar(lastchar());
					filename(c);
					goto doecmd;

/* recover */
				case 'c':
					tail2of("recover");
					setnoaddr();
					c = 'e';
					if (!exclam() && chng)
						c = 'E';
					filename(c);
					if (c == 'E') {
						ungetchar(lastchar());
						ignore(quickly());
					}
					init();
					addr2 = zero;
					laste++;
					ex_sync();
					recover();
					rop2();
					revocer();
					if (status == 0)
						rop3(c);
					if (dol != zero)
						change();
					nochng();
					continue;
				}
				tail2of("read");
			} else
				tail("read");
/* read */
			if (savedfile[0] == 0 && dol == zero)
				c = 'e';
			pastwh();
			vmacchng(0);
			if (peekchar() == '!') {
				setdot();
				ignchar();
				unix0(0);
				filter(0);
				continue;
			}
			filename(c);
			rop(c);
			nochng();
			if (inopen && endline && addr1 > zero && addr1 < dol)
				dot = addr1 + 1;
			continue;

		case 's':
			switch (peekchar()) {
			/*
			 * Caution: 2nd char cannot be c, g, or r
			 * because these have meaning to substitute.
			 */

/* set */
			case 'e':
				tail("set");
				setnoaddr();
				set();
				continue;

/* shell */
			case 'h':
				tail("shell");
				setNAEOL();
				vnfl();
				putpad(TE);
				flush();
				unixwt(1, unixex("-i", (char *) 0, 0, 0));
				vcontin(0);
				continue;

/* source */
			case 'o':
#ifdef notdef
				if (inopen)
					goto notinvis;
#endif
				tail("source");
				setnoaddr();
				getone();
				eol();
				source(file, 0);
				continue;
#ifdef SIGTSTP
/* stop, suspend */
			case 't':
				tail("stop");
				goto suspend;
			case 'u':
				tail("suspend");
suspend:
				if (!dosusp)
					error("Old tty driver|Not using new tty driver/shell");
				c = exclam();
				eol();
				if (!c)
					ckaw();
				onsusp(0);
				continue;
#endif

			}
			/* fall into ... */

/* & */
/* ~ */
/* substitute */
		case '&':
		case '~':
			Command = "substitute";
			if (c == 's')
				tail(Command);
			vmacchng(0);
			if (!substitute(c))
				pflag = 0;
			continue;

/* t */
		case 't':
			if (peekchar() == 'a') {
				tail("tag");
				tagfind(exclam());
				if (!inopen)
					lchng = chng - 1;
				else
					nochng();
				continue;
			}
			tail("t");
			vmacchng(0);
			move();
			continue;

		case 'u':
			if (peekchar() == 'n') {
				ignchar();
				switch(peekchar()) {
/* unmap */
				case 'm':
					tail2of("unmap");
					setnoaddr();
					mapcmd(1, 0);
					continue;
/* unabbreviate */
				case 'a':
					tail2of("unabbreviate");
					setnoaddr();
					mapcmd(1, 1);
					anyabbrs = 1;
					continue;
				}
/* undo */
				tail2of("undo");
			} else
				tail("undo");
			setnoaddr();
			markDOT();
			c = exclam();
			ex_newline();
			undo(c);
			continue;

		case 'v':
			switch (peekchar()) {

			case 'e':
/* version */
				tail("version");
				setNAEOL();
				ex_printf("@(#) Version 3.6, 11/3/80"
				    " (4.0BSD).  git "
				    "160803 14:24"
				    +5);
				noonl();
				continue;

/* visual */
			case 'i':
				tail("visual");
				if (inopen) {
					c = 'e';
					goto editcmd;
				}
				vop();
				pflag = 0;
				nochng();
				continue;
			}
/* v */
			tail("v");
			global(0);
			nochng();
			continue;

/* write */
		case 'w':
			c = peekchar();
			tail(c == 'q' ? "wq" : "write");
wq:
			if (skipwh() && peekchar() == '!') {
				pofix();
				ignchar();
				setall();
				unix0(0);
				filter(1);
			} else {
				setall();
				wop(1);
				nochng();
			}
			if (c == 'q')
				goto quit;
			continue;

/* xit */
		case 'x':
			tail("xit");
			if (!chng)
				goto quit;
			c = 'q';
			goto wq;

/* yank */
		case 'y':
			tail("yank");
			c = cmdreg();
			setcount();
			eol();
			vmacchng(0);
			if (c)
				YANKreg(c);
			else
				yank();
			continue;

/* z */
		case 'z':
			zop(0);
			pflag = 0;
			continue;

/* * */
/* @ */
		case '*':
		case '@':
			c = ex_getchar();
			if (c=='\n' || c=='\r')
				ungetchar(c);
			if (any(c, "@*\n\r"))
				c = lastmac;
			if (isupper(c))
				c = tolower(c);
			if (!islower(c))
				error("Bad register");
			ex_newline();
			setdot();
			cmdmac(c);
			continue;

/* | */
		case '|':
			endline = 0;
			goto caseline;

/* \n */
		case '\n':
			endline = 1;
caseline:
			notempty();
			if (addr2 == 0) {
				if (UP != NOSTR && c == '\n' && !inglobal)
					c = CTRL('k');
				if (inglobal)
					addr1 = addr2 = dot;
				else {
					if (dot == dol)
						error("At EOF|At end-of-file");
					addr1 = addr2 = dot + 1;
				}
			}
			setdot();
			nonzero();
			if (seensemi)
				addr1 = addr2;
			ex_getline(*addr1);
			if (c == CTRL('k')) {
				flush1();
				destline--;
				if (hadpr)
					shudclob = 1;
			}
			plines(addr1, addr2, 1);
			continue;

/* " */
		case '"':
			comment();
			continue;

/* # */
		case '#':
numberit:
			setCNL();
			ignorf(setnumb(1));
			pflag = 0;
			goto print;

/* = */
		case '=':
			ex_newline();
			setall();
			if (inglobal == 2)
				pofix();
			ex_printf("%d", lineno(addr2));
			noonl();
			continue;

/* ! */
		case '!':
			if (addr2 != 0) {
				vmacchng(0);
				unix0(0);
				setdot();
				filter(2);
			} else {
				unix0(1);
				pofix();
				putpad(TE);
				flush();
				unixwt(1, unixex("-c", uxb, 0, 0));
				vclrech(1);	/* vcontin(0); */
				nochng();
			}
			continue;

/* < */
/* > */
		case '<':
		case '>':
			for (cnt = 1; peekchar() == c; cnt++)
				ignchar();
			setCNL();
			vmacchng(0);
			shift(c, cnt);
			continue;

/* ^D */
/* EOF */
		case CTRL('d'):
		case EOF:
			if (exitoneof) {
				if (addr2 != 0)
					dot = addr2;
				return;
			}
			if (!isatty(0)) {
				if (intty)
					/*
					 * Chtty sys call at UCB may cause a
					 * input which was a tty to suddenly be
					 * turned into /dev/null.
					 */
					onhup(0);
				return;
			}
			if (addr2 != 0) {
				setlastchar('\n');
				putnl();
			}
			if (dol == zero) {
				if (addr2 == 0)
					putnl();
				notempty();
			}
			ungetchar(EOF);
			zop(hadpr);
			continue;

		default:
			if (!isalpha(c))
				break;
			ungetchar(c);
			tailprim("", 0, 0);
		}
		ierror("What?|Unknown command character '%c'", c);
	}
}