4.3BSD - /usr/src/usr.lib/libI77/wrtfmt.c

   1: /*
   2:  * Copyright (c) 1980 Regents of the University of California.
   3:  * All rights reserved.  The Berkeley software License Agreement
   4:  * specifies the terms and conditions for redistribution.
   5:  *
   6:  *	@(#)wrtfmt.c	5.1	6/7/85
   7:  */
   8: 
   9: /*
  10:  * formatted write routines
  11:  */
  12: 
  13: #include "fio.h"
  14: #include "format.h"
  15: 
  16: extern char *icvt();
  17: extern char *s_init;
  18: 
  19: #define abs(x) (x<0?-x:x)
  20: 
  21: w_ed(p,ptr,len) char *ptr; struct syl *p; ftnlen len;
  22: {   int n;
  23:     if(cursor && (n=wr_mvcur())) return(n);
  24:     switch(p->op)
  25:     {
  26:     case I:
  27:     case IM:
  28:         return(wrt_IM(ptr,p->p1,p->p2,len));
  29:     case L:
  30:         return(wrt_L(ptr,p->p1,len));
  31:     case A:
  32:         return(wrt_AW(ptr,len,len));
  33:     case AW:
  34:         return(wrt_AW(ptr,p->p1,len));
  35:     case D:
  36:         return(wrt_E(ptr,p->p1,p->p2,2,len,'d'));
  37:     case DE:
  38:         return(wrt_E(ptr,p->p1,(p->p2)&0xff,((p->p2)>>8)&0xff,len,'d'));
  39:     case E:
  40:         return(wrt_E(ptr,p->p1,p->p2,2,len,'e'));
  41:     case EE:
  42:         return(wrt_E(ptr,p->p1,(p->p2)&0xff,((p->p2)>>8)&0xff,len,'e'));
  43:     case G:
  44:         return(wrt_G(ptr,p->p1,p->p2,2,len));
  45:     case GE:
  46:         return(wrt_G(ptr,p->p1,(p->p2)&0xff,((p->p2)>>8)&0xff,len));
  47:     case F:
  48:         return(wrt_F(ptr,p->p1,p->p2,len));
  49:     default:
  50:         return(errno=F_ERFMT);
  51:     }
  52: }
  53: 
  54: w_ned(p,ptr) char *ptr; struct syl *p;
  55: {
  56:     switch(p->op)
  57:     {
  58:     case SLASH:
  59:         return((*donewrec)());
  60:     case T:
  61:         if(p->p1) cursor = p->p1 - recpos - 1;
  62: #ifndef KOSHER
  63:         else cursor = 8*p->p2 - recpos%8;   /* NOT STANDARD FORT */
  64: #endif
  65:         tab = YES;
  66:         return(OK);
  67:     case TL:
  68:         cursor -= p->p1;
  69:         if ((recpos + cursor) < 0) cursor = -recpos;    /* ANSI req'd */
  70:         tab = YES;
  71:         return(OK);
  72:     case TR:
  73:     case X:
  74:         cursor += p->p1;
  75:         /* tab = (p->op == TR); this would implement destructive X */
  76:         tab = YES;
  77:         return(OK);
  78:     case APOS:
  79:         return(wrt_AP(&s_init[p->p1]));
  80:     case H:
  81:         return(wrt_H(p->p1,&s_init[p->p2]));
  82:     default:
  83:         return(errno=F_ERFMT);
  84:     }
  85: }
  86: 
  87: LOCAL
  88: wr_mvcur()
  89: {   int n;
  90:     if(tab) return((*dotab)());
  91:     if (cursor < 0) return(errno=F_ERSEEK);
  92:     while(cursor--) PUT(' ')
  93:     return(cursor=0);
  94: }
  95: 
  96: LOCAL
  97: wrt_IM(ui,w,m,len) uint *ui; ftnlen len;
  98: {   int ndigit,sign,spare,i,xsign,n;
  99:     long x;
 100:     char *ans;
 101:     if(sizeof(short)==len) x=ui->is;
 102: /*	else if(len == sizeof(char)) x = ui->ic; */
 103:     else x=ui->il;
 104:     if(x==0 && m==0)
 105:     {   for(i=0;i<w;i++) PUT(' ')
 106:         return(OK);
 107:     }
 108:     ans=icvt(x,&ndigit,&sign);
 109:     if(sign || cplus) xsign=1;
 110:     else xsign=0;
 111:     if(ndigit+xsign>w || m+xsign>w)
 112:     {   for(i=0;i<w;i++) PUT('*')
 113:         return(OK);
 114:     }
 115:     if(ndigit>=m)
 116:         spare=w-ndigit-xsign;
 117:     else
 118:         spare=w-m-xsign;
 119:     for(i=0;i<spare;i++) PUT(' ')
 120:     if(sign) PUT('-')
 121:     else if(cplus) PUT('+')
 122:     for(i=0;i<m-ndigit;i++) PUT('0')
 123:     for(i=0;i<ndigit;i++) PUT(*ans++)
 124:     return(OK);
 125: }
 126: 
 127: LOCAL
 128: wrt_AP(p)
 129: {   char *s,quote;
 130:     int n;
 131:     if(cursor && (n=wr_mvcur())) return(n);
 132:     s=(char *)p;
 133:     quote = *s++;
 134:     for(; *s; s++)
 135:     {   if(*s!=quote) PUT(*s)
 136:         else if(*++s==quote) PUT(*s)
 137:         else return(OK);
 138:     }
 139:     return(OK);
 140: }
 141: 
 142: LOCAL
 143: wrt_H(a,b)
 144: {   char *s=(char *)b;
 145:     int n;
 146:     if(cursor && (n=wr_mvcur())) return(n);
 147:     while(a--) PUT(*s++)
 148:     return(OK);
 149: }
 150: 
 151: wrt_L(l,width,len) uint *l; ftnlen len;
 152: {   int i,n;
 153:     for(i=0;i<width-1;i++) PUT(' ')
 154:     if(len == sizeof (short))
 155:         i = l->is;
 156:     else
 157:         i = l->il;
 158:     if(i) PUT('t')
 159:     else PUT('f')
 160:     return(OK);
 161: }
 162: 
 163: LOCAL
 164: wrt_AW(p,w,len) char * p; ftnlen len;
 165: {   int n;
 166:     while(w>len)
 167:     {   w--;
 168:         PUT(' ')
 169:     }
 170:     while(w-- > 0)
 171:         PUT(*p++)
 172:     return(OK);
 173: }
 174: 
 175: wrt_E(p,w,d,e,len,expch) ufloat *p; ftnlen len; char expch;
 176: {   char *s,ex[4];
 177:     int dd,dp,sign,i,delta,pad,n;
 178:     char *ecvt();
 179: 
 180:     if((len==sizeof(float)?p->pf:p->pd)==0.0)
 181:     {
 182:         n = cblank;
 183:         cblank = 1; /* force '0' fill */
 184:         wrt_F(p,w-(e+2),d,len);
 185:         cblank = n;
 186:         PUT(expch)
 187:         PUT('+')
 188: /*		for(i=0;i<(e-1);i++)PUT(' ')
 189: deleted		PUT('0')
 190:  */
 191: /* added */ for(i=0;i<e;i++) PUT('0')
 192:         return(OK);
 193:     }
 194:     if (scale > 0) {    /* insane ANSI requirement */
 195:         dd = d + 1;
 196:         d = dd - scale;
 197:     } else
 198:         dd = d + scale;
 199:     if (dd <= 0 || d < 0) goto E_badfield;
 200:     s=ecvt( (len==sizeof(float)?(double)p->pf:p->pd) ,dd,&dp,&sign);
 201:     delta = 3+e;
 202:     if(sign||cplus) delta++;
 203:     pad=w-(delta+d)-(scale>0? scale:0);
 204:     if(pad<0) {
 205: E_badfield:
 206:         for(i=0;i<w;i++) PUT('*')
 207:         return(OK);
 208:     }
 209:     for(i=0;i<(pad-(scale<=0?1:0));i++) PUT(' ')
 210:     if(sign) PUT('-')
 211:     else if(cplus) PUT('+')
 212:     if(scale<=0 && pad) PUT('0')
 213:     if(scale<0 && scale > -d)
 214:     {
 215:         PUT('.')
 216:         for(i=0;i<-scale;i++)
 217:             PUT('0')
 218:         for(i=0;i<d+scale;i++)
 219:             PUT(*s++)
 220:     }
 221:     else
 222:     {
 223:         if(scale>0)
 224:             for(i=0;i<scale;i++)
 225:                 PUT(*s++)
 226:         PUT('.')
 227:         for(i=0;i<d;i++)
 228:             PUT(*s++)
 229:     }
 230:     dp -= scale;
 231:     sprintf(ex,"%d",abs(dp));
 232:     if((pad=strlen(ex))>e)
 233:     {   if(pad>(++e))
 234:         {   PUT(expch)
 235:             for(i=0;i<e;i++) PUT('*')
 236:             return(OK);
 237:         }
 238:     }
 239:     else PUT(expch)
 240:     PUT(dp<0?'-':'+')
 241:     for(i=0;i<(e-pad);i++) PUT('0')  /* was ' ' */
 242:     s= &ex[0];
 243:     while(*s) PUT(*s++)
 244:     return(OK);
 245: }
 246: 
 247: LOCAL
 248: wrt_G(p,w,d,e,len) ufloat *p; ftnlen len;
 249: {   double uplim = 1.0, x;
 250:     int i,oldscale,n,j,ne;
 251:     x=(len==sizeof(float)?(double)p->pf:p->pd);
 252:     i=d;
 253:     if(x==0.0) goto zero;
 254:     x = abs(x);
 255:     if(x>=0.1)
 256:     {
 257:         for(i=0; i<=d; i++, uplim*=10.0)
 258:         {   if(x>=uplim) continue;
 259: zero:           oldscale=scale;
 260:             scale=0;
 261:             ne = e+2;
 262:             if(n = wrt_F(p,w-ne,d-i,len)) return(n);
 263:             for(j=0; j<ne; j++) PUT(' ')
 264:             scale=oldscale;
 265:             return(OK);
 266:         }
 267:         /* falling off the bottom implies E format */
 268:     }
 269:     return(wrt_E(p,w,d,e,len,'e'));
 270: }
 271: 
 272: wrt_F(p,w,d,len) ufloat *p; ftnlen len;
 273: {   int i,delta,dp,sign,n,nf;
 274:     double x;
 275:     char *s,*fcvt();
 276:     x= (len==sizeof(float)?(double)p->pf:p->pd);
 277:     if(scale && x!=0.0)
 278:     {   if(scale>0)
 279:             for(i=0;i<scale;i++) x*=10;
 280:         else    for(i=0;i<-scale;i++) x/=10;
 281:     }
 282:     s=fcvt(x,d,&dp,&sign);
 283: /*	if(-dp>=d) sign=0; ?? */
 284:     delta=1;
 285:     if(sign || cplus) delta++;
 286:     nf = w - (d + delta + (dp>0?dp:0));
 287:     if(nf<0)
 288:     {
 289:         for(i=0;i<w;i++) PUT('*')
 290:         return(OK);
 291:     }
 292:     if(nf>0) for(i=0; i<(nf-(dp<=0?1:0)); i++) PUT(' ')
 293:     if(sign) PUT('-')
 294:     else if(cplus) PUT('+')
 295:     if(dp>0) for(i=0;i<dp;i++) PUT(*s++)
 296:     else if(nf>0) PUT('0')
 297:     PUT('.')
 298:     for(i=0; i< -dp && i<d; i++) PUT('0')
 299:     for(;i<d;i++)
 300:     {   if(x==0.0 && !cblank) PUT(' ')  /* exactly zero */
 301:         else if(*s) PUT(*s++)
 302:         else PUT('0')
 303:     }
 304:     return(OK);
 305: }

Defined functions

Defined macros