4.3BSD - /usr/src/bin/adb/input.c

   1: #ifndef lint
   2: static  char sccsid[] = "@(#)input.c	4.2 8/11/83";
   3: #endif
   4: /*
   5:  *
   6:  *	UNIX debugger
   7:  *
   8:  */
   9: 
  10: #include "defs.h"
  11: 
  12: INT     mkfault;
  13: CHAR        line[LINSIZ];
  14: INT     infile;
  15: CHAR        *lp;
  16: CHAR        peekc,lastc = EOR;
  17: INT     eof;
  18: 
  19: /* input routines */
  20: 
  21: eol(c)
  22: CHAR    c;
  23: {
  24:     return(c==EOR ORF c==';');
  25: }
  26: 
  27: rdc()
  28: {   REP readchar();
  29:     PER lastc==SP ORF lastc==TB
  30:     DONE
  31:     return(lastc);
  32: }
  33: 
  34: readchar()
  35: {
  36:     IF eof
  37:     THEN    lastc=0;
  38:     ELSE    IF lp==0
  39:         THEN    lp=line;
  40:             REP eof = read(infile,lp,1)==0;
  41:                 IF mkfault THEN error(0); FI
  42:             PER eof==0 ANDF *lp++!=EOR DONE
  43:             *lp=0; lp=line;
  44:         FI
  45:         IF lastc = peekc THEN peekc=0;
  46:         ELIF lastc = *lp THEN lp++;
  47:         FI
  48:     FI
  49:     return(lastc);
  50: }
  51: 
  52: nextchar()
  53: {
  54:     IF eol(rdc())
  55:     THEN lp--; return(0);
  56:     ELSE return(lastc);
  57:     FI
  58: }
  59: 
  60: quotchar()
  61: {
  62:     IF readchar()=='\\'
  63:     THEN    return(readchar());
  64:     ELIF lastc=='\''
  65:     THEN    return(0);
  66:     ELSE    return(lastc);
  67:     FI
  68: }
  69: 
  70: getformat(deformat)
  71: STRING      deformat;
  72: {
  73:     REG STRING  fptr;
  74:     REG BOOL    quote;
  75:     fptr=deformat; quote=FALSE;
  76:     WHILE (quote ? readchar()!=EOR : !eol(readchar()))
  77:     DO  IF (*fptr++ = lastc)=='"'
  78:         THEN quote = ~quote;
  79:         FI
  80:     OD
  81:     lp--;
  82:     IF fptr!=deformat THEN *fptr++ = '\0'; FI
  83: }

Defined functions

Defined variables