1: #include "defs.h"
   2: #include <ctype.h>
   3: 
   4:     MSG BADMOD;
   5:     MSG NOFORK;
   6:     MSG ADWRAP;
   7: extern  struct  SYMbol  *symbol;
   8:     int mkfault;
   9:     char    *lp;
  10:     char    *printptr, printbuf[];
  11:     int maxoff;
  12:     int sigint;
  13:     int sigqit;
  14:     char    *errflg;
  15:     char    lastc;
  16:     long    dot;
  17:     int dotinc;
  18:     long    var[];
  19: 
  20: scanform(icount,ifp,itype,ptype)
  21:     long    icount;
  22:     char    *ifp;
  23: {
  24:     char    *fp;
  25:     char    modifier;
  26:     int fcount, init=1;
  27:     long    savdot;
  28: 
  29:     WHILE icount
  30:     DO  fp=ifp;
  31:         IF init==0 ANDF findsym(shorten(dot),ptype)==0 ANDF maxoff
  32:         THEN printf("\n%s:%16t", cache_sym(symbol));
  33:         FI
  34:         savdot=dot; init=0;
  35: 
  36:         /*now loop over format*/
  37:         WHILE *fp ANDF errflg==0
  38:         DO  IF isdigit(modifier = *fp)
  39:         THEN fcount=0;
  40:              WHILE isdigit(modifier = *fp++)
  41:              DO fcount *= 10;
  42:             fcount += modifier-'0';
  43:              OD
  44:              fp--;
  45:         ELSE fcount=1;
  46:         FI
  47: 
  48:         IF *fp==0 THEN break; FI
  49:         fp=exform(fcount,fp,itype,ptype);
  50:         OD
  51:         dotinc=dot-savdot;
  52:         dot=savdot;
  53: 
  54:         IF errflg
  55:         THEN IF icount<0
  56:          THEN errflg=0; break;
  57:          ELSE error(errflg);
  58:          FI
  59:         FI
  60:         IF --icount
  61:         THEN dot=inkdot(dotinc);
  62:         FI
  63:         IF mkfault THEN error((char *)0); FI
  64:     OD
  65: }
  66: 
  67: char *
  68: exform(fcount,ifp,itype,ptype)
  69:     int fcount;
  70:     char    *ifp;
  71:     int itype, ptype;
  72: {
  73:     /* execute single format item `fcount' times
  74: 	 * sets `dotinc' and moves `dot'
  75: 	 * returns address of next format item
  76: 	 */
  77:     u_int   w;
  78:     long    savdot, wx;
  79:     char    *fp;
  80:     char    c, modifier, longpr;
  81:     struct  {
  82:         long    sa;
  83:         int sb,sc;
  84:         } fw;
  85: 
  86:     WHILE fcount>0
  87:     DO  fp = ifp; c = *fp;
  88:         longpr=(c>='A')&(c<='Z')|(c=='f');
  89:         IF itype==NSP ORF *fp=='a'
  90:         THEN wx=dot; w=dot;
  91:         ELSE w=get(dot,itype);
  92:              IF longpr
  93:              THEN wx=itol(w,get(inkdot(2),itype));
  94:              ELSE wx=w;
  95:              FI
  96:         FI
  97:         IF c=='F'
  98:         THEN fw.sb=get(inkdot(4),itype);
  99:              fw.sc=get(inkdot(6),itype);
 100:         FI
 101:         IF errflg THEN return(fp); FI
 102:         IF mkfault THEN error((char *)0); FI
 103:         var[0]=wx;
 104:         modifier = *fp++;
 105:         dotinc=(longpr?4:2);;
 106: 
 107:         if (!(printptr - printbuf) && modifier != 'a')
 108:             printf("%16m");
 109: 
 110:         switch(modifier) {
 111: 
 112:             case SP: case TB:
 113:             break;
 114: 
 115:             case 't': case 'T':
 116:             printf("%T",fcount); return(fp);
 117: 
 118:             case 'r': case 'R':
 119:             printf("%M",fcount); return(fp);
 120: 
 121:             case 'a':
 122:             psymoff(dot,ptype,":%16t"); dotinc=0; break;
 123: 
 124:             case 'p':
 125:             psymoff(var[0],ptype,"%16t"); break;
 126: 
 127:             case 'u':
 128:             printf("%-8u",w); break;
 129: 
 130:             case 'U':
 131:             printf("%-16U",wx); break;
 132: 
 133:             case 'c': case 'C':
 134:             IF modifier=='C'
 135:             THEN printesc(w&LOBYTE);
 136:             ELSE printc(w&LOBYTE);
 137:             FI
 138:             dotinc=1; break;
 139: 
 140:             case 'b': case 'B':
 141:             printf("%-8o", w&LOBYTE); dotinc=1; break;
 142: 
 143:             case 's': case 'S':
 144:             savdot=dot; dotinc=1;
 145:             WHILE (c=get(dot,itype)&LOBYTE) ANDF errflg==0
 146:             DO dot=inkdot(1);
 147:                IF modifier == 'S'
 148:                THEN printesc(c);
 149:                ELSE printc(c);
 150:                FI
 151:                endline();
 152:             OD
 153:             dotinc=dot-savdot+1; dot=savdot; break;
 154: 
 155:             case 'x':
 156:             printf("%-8x",w); break;
 157: 
 158:             case 'X':
 159:             printf("%-16X", wx); break;
 160: 
 161:             case 'Y':
 162:             printf("%-24Y", wx); break;
 163: 
 164:             case 'q':
 165:             printf("%-8q", w); break;
 166: 
 167:             case 'Q':
 168:             printf("%-16Q", wx); break;
 169: 
 170:             case 'o':
 171:             case 'w':
 172:             printf("%-8o", w); break;
 173: 
 174:             case 'O':
 175:             case 'W':
 176:             printf("%-16O", wx); break;
 177: 
 178:             case 'i':
 179:             printins(itype,w); printc(EOR); break;
 180: 
 181:             case 'd':
 182:             printf("%-8d", w); break;
 183: 
 184:             case 'D':
 185:             printf("%-16D", wx); break;
 186: 
 187:             case 'f':
 188:             *(double *)&fw = 0.0;
 189:             fw.sa = wx;
 190:             printf("%-16.9f", *(double *)&fw);
 191:             dotinc=4; break;
 192: 
 193:             case 'F':
 194:             fw.sa = wx;
 195:             printf("%-32.18F", *(double *)&fw);
 196:             dotinc=8; break;
 197: 
 198:             case 'n': case 'N':
 199:             printc('\n'); dotinc=0; break;
 200: 
 201:             case '"':
 202:             dotinc=0;
 203:             WHILE *fp != '"' ANDF *fp
 204:             DO printc(*fp++); OD
 205:             IF *fp THEN fp++; FI
 206:             break;
 207: 
 208:             case '^':
 209:             dot=inkdot(-dotinc*fcount); return(fp);
 210: 
 211:             case '+':
 212:             dot=inkdot(fcount); return(fp);
 213: 
 214:             case '-':
 215:             dot=inkdot(-fcount); return(fp);
 216: 
 217:             default: error(BADMOD);
 218:         }
 219:         IF itype!=NSP
 220:         THEN    dot=inkdot(dotinc);
 221:         FI
 222:         fcount--; endline();
 223:     OD
 224: 
 225:     return(fp);
 226: }
 227: 
 228: unox()
 229: {
 230:     int rc, status, unixpid;
 231:     char    *argp = lp;
 232: 
 233:     WHILE lastc!=EOR DO rdc(); OD
 234:     IF (unixpid=fork())==0
 235:     THEN    signal(SIGINT,sigint); signal(SIGQUIT,sigqit);
 236:         *lp=0; execl("/bin/sh", "sh", "-c", argp, 0);
 237:         exit(16);
 238:     ELIF unixpid == -1
 239:     THEN    error(NOFORK);
 240:     ELSE    signal(SIGINT,SIG_IGN);
 241:         WHILE (rc = wait(&status)) != unixpid ANDF rc != -1 DONE
 242:         signal(SIGINT,sigint);
 243:         printc('!'); lp--;
 244:     FI
 245: }
 246: 
 247: 
 248: printesc(c)
 249: {
 250:     c &= STRIP;
 251:     IF c<SP ORF c>'~' ORF c=='@'
 252:     THEN printf("@%c",(c=='@' ? '@' : c^0140));
 253:     ELSE printc(c);
 254:     FI
 255: }
 256: 
 257: long
 258: inkdot(incr)
 259: {
 260:     long    newdot;
 261: 
 262:     newdot=dot+incr;
 263:     IF (dot ^ newdot) >> 24 THEN error(ADWRAP); FI
 264:     return(newdot);
 265: }

Defined functions

exform defined in line 67; used 4 times
inkdot defined in line 257; used 20 times
printesc defined in line 248; used 2 times
scanform defined in line 20; used 1 times
unox defined in line 228; used 1 times

Defined variables

ADWRAP defined in line 6; used 1 times
BADMOD defined in line 4; used 1 times
NOFORK defined in line 5; used 1 times
dot defined in line 16; used 20 times
dotinc defined in line 17; used 14 times
errflg defined in line 14; used 6 times
lastc defined in line 15; used 1 times
lp defined in line 9; used 3 times
maxoff defined in line 11; used 1 times
  • in line 31
mkfault defined in line 8; used 2 times
printbuf defined in line 10; used 1 times
printptr defined in line 10; used 1 times
sigint defined in line 12; used 2 times
sigqit defined in line 13; used 1 times
var defined in line 18; used 2 times
Last modified: 1994-01-13
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