2.11BSD/src/bin/adb/input.c

#include "defs.h"

	int	mkfault;
	char	line[LINSIZ];
	int	infile;
	char	*lp;
	char	lastc = EOR;
	int	eof;

/* input routines */

eol(c)
	char	c;
{
	return(c==EOR || c==';');
}

rdc()
{	REP	readchar();
	PER	lastc==SP ORF lastc==TB
	DONE
	return(lastc);
}

readchar()
{
	IF eof
	THEN	lastc = '\0';
	ELSE	IF lp==0
		THEN	lp=line;
			REP eof = read(infile,lp,1)==0;
			    IF mkfault THEN error((char *)0); FI
			PER eof==0 ANDF *lp++!=EOR DONE
			*lp=0; lp=line;
		FI
		IF lastc = *lp THEN lp++; FI
	FI
	return(lastc);
}

nextchar()
{
	IF eol(rdc())
	THEN lp--; return(0);
	ELSE return(lastc);
	FI
}

quotchar()
{
	IF readchar()=='\\'
	THEN	return(readchar());
	ELIF lastc=='\''
	THEN	return(0);
	ELSE	return(lastc);
	FI
}

getformat(deformat)
	char	*deformat;
{
	register char	*fptr;
	register int	quote;

	fptr=deformat; quote=FALSE;
	WHILE (quote ? readchar()!=EOR : !eol(readchar()))
	DO  IF (*fptr++ = lastc)=='"'
	    THEN quote = ~quote;
	    FI
	OD
	lp--;
	IF fptr!=deformat THEN *fptr++ = '\0'; FI
}