2.11BSD#431 - /usr/src/lib/ccom/cvopt.c

   1: #include <stdio.h>
   2: 
   3: int tabflg;
   4: int labno   = 1;
   5: int opno;
   6: FILE    *curbuf;
   7: FILE    *obuf;
   8: FILE    *oobuf;
   9: char  oname[]="/tmp/cvoptaXXXXXX";
  10: char ooname[]="/tmp/cvoptbXXXXXX";
  11: char lbuf[BUFSIZ];
  12: char *lbufp = lbuf;
  13: 
  14: main(argc, argv)
  15: char **argv;
  16: {
  17: /*
  18: 	A1 -> A
  19: 	A2    B
  20: 	A     O
  21: 	B1    C
  22: 	B2    D
  23: 	BE    L
  24: 	BF    P
  25: 	C1    E
  26: 	C2    F
  27: 	F     G
  28: 	H     H
  29: 	R     I
  30: 	R1    J
  31: 	S     K
  32: 	I     M
  33: 	M     N
  34: 
  35: 		*	+1
  36: 		S	+2
  37: 		C	+4
  38: 		1	+8
  39: 
  40: 	z  -> 4
  41: 	c     10
  42: 	a     14
  43: 	e     20
  44: 	n     63
  45: 	*	+0100
  46: */
  47: 
  48:     int c, snlflg, nlflg, t, smode, m, ssmode, peekc, side;
  49: 
  50:     smode = nlflg = snlflg = ssmode = 0;
  51:     if (argc>1)
  52:         if (freopen(argv[1], "r", stdin) == NULL) {
  53:             fprintf(stderr, "%s?\n", argv[1]);
  54:             return(1);
  55:         }
  56:     if (argc>2)
  57:         if (freopen(argv[2], "w", stdout) == NULL) {
  58:             fprintf(stderr, "%s?\n", argv[2]);
  59:             return(1);
  60:         }
  61:     mktemp(oname);
  62:     if ((obuf = fopen(oname, "w")) == NULL) {
  63:         fprintf(stderr, "%s?\n", oname);
  64:         exit(1);
  65:     }
  66:     mktemp(ooname);
  67:     if ((oobuf = fopen(ooname, "w")) == NULL) {
  68:         fprintf(stderr, "%s?\n", ooname);
  69:         exit(1);
  70:     }
  71:     printf("#include \"c1.h\"");
  72:     curbuf = obuf;
  73: loop:
  74:     c = getchar();
  75:     if (c!='\n' && c!='\t')
  76:         nlflg = 0;
  77:     if (ssmode!=0 && c!='%') {
  78:         ssmode = 0;
  79:         curbuf = stdout;
  80:         fprintf(curbuf, "\nstatic char L%d[]=\"", labno++);
  81:     }
  82:     switch(c) {
  83: 
  84:     case EOF:
  85:         fprintf(obuf, "\t{0},\n};\n");
  86:         fclose(obuf);
  87:         if (freopen(oname, "r", stdin) == NULL) {
  88:             fprintf(stderr, "%s?\n",oname);
  89:             exit(1);
  90:         }
  91:         while ((c = getchar()) != EOF)
  92:             putchar(c);
  93:         unlink(oname);
  94:         fclose(oobuf);
  95:         if (freopen(ooname, "r", stdin) == NULL) {
  96:             fprintf(stderr, "%s?\n",ooname);
  97:             exit(1);
  98:         }
  99:         while ((c = getchar()) != EOF)
 100:             putchar(c);
 101:         unlink(ooname);
 102:         return(0);
 103: 
 104:     case 'A':
 105:         if ((c=getchar())=='1' || c=='2') {
 106:             put(c+'A'-'1');
 107:             goto loop;
 108:         }
 109:         put('O');
 110:         ungetc(c, stdin);
 111:         goto loop;
 112: 
 113:     case 'B':
 114:         switch (getchar()) {
 115: 
 116:         case '1':
 117:             put('C');
 118:             goto loop;
 119: 
 120:         case '2':
 121:             put('D');
 122:             goto loop;
 123: 
 124:         case 'E':
 125:             put('L');
 126:             goto loop;
 127: 
 128:         case 'F':
 129:             put('P');
 130:             goto loop;
 131:         }
 132:         put('?');
 133:         goto loop;
 134: 
 135:     case 'C':
 136:         put(getchar()+'E'-'1');
 137:         goto loop;
 138: 
 139:     case 'F':
 140:         put('G');
 141:         goto subtre;
 142: 
 143:     case 'R':
 144:         if ((c=getchar()) == '1')
 145:         put('J'); else {
 146:             put('I');
 147:             ungetc(c, stdin);
 148:         }
 149:         goto loop;
 150: 
 151:     case 'H':
 152:         put('H');
 153:         goto subtre;
 154: 
 155:     case 'I':
 156:         put('M');
 157:         goto loop;
 158: 
 159:     case 'S':
 160:         put('K');
 161: subtre:
 162:         snlflg = 1;
 163:         t = 'A';
 164: l1:
 165:         switch (c=getchar()) {
 166: 
 167:         case '*':
 168:             t++;
 169:             goto l1;
 170: 
 171:         case 'S':
 172:             t += 2;
 173:             goto l1;
 174: 
 175:         case 'C':
 176:             t += 4;
 177:             goto l1;
 178: 
 179:         case '1':
 180:             t += 8;
 181:             goto l1;
 182: 
 183:         case '2':
 184:             t += 16;
 185:             goto l1;
 186:         }
 187:         ungetc(c, stdin);
 188:         put(t);
 189:         goto loop;
 190: 
 191:     case '#':
 192:         if(getchar()=='1')
 193:             put('#'); else
 194:             put('"');
 195:         goto loop;
 196: 
 197:     case '%':
 198:         if (smode)
 199:             curbuf = obuf;
 200:         if (ssmode==0) {
 201:             if ((peekc=getchar())=='[') {
 202:                 printf("\n#define ");
 203:                 while((c=getchar())!=']' && c!=':')
 204:                     putchar(c);
 205:                 printf(" L%d\n",labno);
 206:                 if (c==':') getchar();
 207:                 getchar();
 208:                 curbuf = obuf;
 209:                 goto loop;
 210:             }
 211:             ungetc(peekc, stdin);
 212:         }
 213:         side=0;
 214: loop1:
 215:         switch (c=getchar()) {
 216: 
 217:         case ' ':
 218:         case '\t':
 219:             goto loop1;
 220:         case 'a':
 221:             m = 16;
 222:             t = flag();
 223:             goto pf;
 224: 
 225:         case ',':
 226:             side=1;
 227:             goto loop1;
 228: 
 229:         case 'i':
 230:             m = 12;
 231:             t = flag();
 232:             goto pf;
 233:         case 'z':
 234:             m = 4;
 235:             t = flag();
 236:             goto pf;
 237: 
 238:         case 'r':
 239:             m = 9;
 240:             t = flag();
 241:             goto pf;
 242: 
 243:         case '1':
 244:             m = 5;
 245:             t = flag();
 246:             goto pf;
 247: 
 248:         case 'c':
 249:             t = 0;
 250:             m = 8;
 251:             goto pf;
 252: 
 253:         case 'e':
 254:             t = flag();
 255:             m = 20;
 256:             goto pf;
 257: 
 258:         case 'n':
 259:             t = flag();
 260:             m = 63;
 261: pf:
 262:             if ((c=getchar())=='*')
 263:                 m += 0100; else
 264:                 ungetc(c, stdin);
 265:             if (side==0) {
 266:                 if (opno==0) fprintf(curbuf,"\nstruct optab optab[]={\n");
 267:                 fprintf(curbuf,"\t{");
 268:             }
 269:             fprintf(curbuf, "%d,%d,", m, t);
 270:             goto loop1;
 271:         case '[':
 272:             printf("\n#define L%d ", labno++);
 273:             while ((c=getchar())!=']')
 274:                 putchar(c);
 275:             printf("\n");
 276:             ssmode = 0;
 277:             smode = 0;
 278:             goto loop;
 279: 
 280:         case '{':
 281:         for(;;) {
 282:             while ((c=getchar())!='%') putc(c,oobuf);
 283:             if ((c=getchar())=='}') goto loop;
 284:             else {putc('%',oobuf); putc(c,oobuf);}
 285:         }
 286: 
 287:         case '\n':
 288:             fprintf(curbuf, "L%d},	/* %d */\n", labno,opno);
 289:             ++opno;
 290:             ssmode = 1;
 291:             nlflg = 1;
 292:             smode = 1;
 293:             goto loop;
 294: 
 295:         case '/':
 296:             comment(c); goto loop1;
 297: 
 298:         }
 299:         put(c);
 300:         goto loop1;
 301: 
 302:     case '\t':
 303:         if (nlflg) {
 304:             nlflg = 0;
 305:             goto loop;
 306:         }
 307:         if (smode) {
 308:             tabflg++;
 309:             goto loop;
 310:         }
 311:         put('\t');
 312:         goto loop;
 313: 
 314:     case '\n':
 315:         lbufp=lbuf;
 316:         if (!smode)  {
 317:             put('\n');
 318:             goto loop;
 319:         }
 320:         if (nlflg) {
 321:             nlflg = 0;
 322:             fprintf(curbuf, "\";");
 323:             curbuf = obuf;
 324:             smode = 0;
 325:             goto loop;
 326:         }
 327:         if (!snlflg)
 328:             fprintf(curbuf, "\\n");
 329:         snlflg = 0;
 330:         nlflg = 1;
 331:         goto loop;
 332: 
 333:     case '/':
 334:         comment(c); goto loop;
 335: 
 336:     case 'X':
 337:     case 'Y':
 338:     case 'T':
 339:         snlflg++;
 340:         break;
 341: 
 342:     case ':':
 343:         fseek(curbuf,(long)(lbuf-lbufp),2);
 344:         *lbufp='\0';
 345:         if (opno!=0) {fprintf(curbuf,"\t{0},\n"); ++opno;}
 346:         printf("\n#define %s &optab[%d]\n",lbuf,opno);
 347:         fprintf(curbuf,"/* %s */",lbuf);
 348:         lbufp=lbuf;
 349:         goto loop;
 350: 
 351:     }
 352:     *lbufp++=c;
 353:     put(c);
 354:     goto loop;
 355: }
 356: 
 357: flag() {
 358:     register c, f;
 359: 
 360:     f = 0;
 361: l1:
 362:     switch(c=getchar()) {
 363: 
 364:     case 'w':
 365:         f = 1;
 366:         goto l1;
 367: 
 368:     case 'i':
 369:         f = 2;
 370:         goto l1;
 371: 
 372:     case 'b':
 373:         if (f==9)       /* unsigned word/int seen yet? */
 374:             f = 10;     /*  yes - it is unsigned byte */
 375:         else
 376:             f = 3;      /*  no - it is regular (signed) byte */
 377:         goto l1;
 378: 
 379:     case 'f':
 380:         f = 4;
 381:         goto l1;
 382: 
 383:     case 'd':
 384:         f = 5;
 385:         goto l1;
 386: 
 387:     case 'u':
 388:         if (f==3)       /* regular (signed) byte seen ? */
 389:             f = 10;     /*  yes - unsigned byte now */
 390:         else if (f == 8)    /* regular (signed) long seen? */
 391:             f = 11;     /*  yes - it is unsigned long now */
 392:         else
 393:             f = 9;      /* otherwise we have unsigned word */
 394:         goto l1;
 395: 
 396:     case 's':
 397:         f = 6;
 398:         goto l1;
 399: 
 400:     case 'l':
 401:         if (f == 9)     /* seen unsigned yet? */
 402:             f = 11;     /*  yes - it is unsigned long now */
 403:         else
 404:             f = 8;      /*  no - it is unsigned word now */
 405:         goto l1;
 406: 
 407:     case 'p':
 408:         f += 16;
 409:         goto l1;
 410:     }
 411:     ungetc(c, stdin);
 412:     return(f);
 413: }
 414: 
 415: put(c)
 416: {
 417:     if (tabflg) {
 418:         tabflg = 0;
 419:         fprintf(curbuf, "\\%o", c+0200);
 420:     } else {
 421:         if (c=='"') putc('\\',curbuf);
 422:         putc(c, curbuf);
 423:     }
 424: }
 425: 
 426: comment(c)
 427: register char c;
 428: {
 429:     putc(c,curbuf);
 430:     if ((c=getchar())=='*') for (;;) {
 431:         do putc(c,curbuf); while ((c=getchar())!='*');
 432:         putc(c,curbuf);
 433:         if ((c=getchar())=='/') {putc(c,curbuf); break;}
 434:     } else ungetc(c,stdin);
 435: }

Defined functions

Defined variables