--- ray/src/cal/rcalc.c	2003/05/25 05:27:16	1.4
+++ ray/src/cal/rcalc.c	2005/02/16 17:20:22	1.17
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char RCSid[] = "$Id: rcalc.c,v 1.4 2003/05/25 05:27:16 greg Exp $";
+static const char RCSid[] = "$Id: rcalc.c,v 1.17 2005/02/16 17:20:22 greg Exp $";
 #endif
 /*
  *  rcalc.c - record calculator program.
@@ -7,26 +7,25 @@ static const char RCSid[] = "$Id: rcalc.c,v 1.4 2003/0
  *     9/11/87
  */
 
-#include  <stdio.h>
-
 #include  <stdlib.h>
-
+#include  <fcntl.h>
+#include  <stdio.h>
+#include  <string.h>
 #include  <math.h>
-
 #include  <ctype.h>
 
+#include  "platform.h"
+#include  "rterror.h"
+#include  "rtmisc.h"
+#include  "rtio.h"
 #include  "calcomp.h"
 
-#ifdef  CPM
-#define  getc           agetc   /* text files only, right? */
-#endif
-
 #define  isnum(c)       (isdigit(c) || (c)=='-' || (c)=='.' \
 				|| (c)=='+' || (c)=='e' || (c)=='E')
 
 #define  isblnk(c)      (igneol ? isspace(c) : (c)==' '||(c)=='\t')
 
-#define  INBSIZ         4096    /* longest record */
+#define  INBSIZ         16384	/* longest record */
 #define  MAXCOL         32      /* number of columns recorded */
 
 				/* field type specifications */
@@ -58,8 +57,20 @@ struct field {                  /* record format struc
 #define  savqstr(s)     strcpy(emalloc(strlen(s)+1),s)
 #define  freqstr(s)     efree(s)
 
-extern char  *strcpy(), *emalloc(), *savestr();
-struct strvar  *getsvar();
+static int getinputrec(FILE *fp);
+static void scaninp(void), advinp(void), resetinp(void);
+static void putrec(void), putout(void), nbsynch(void);
+static int getrec(void);
+static void execute(char *file);
+static void initinp(FILE *fp);
+static void svpreset(char *eqn);
+static void readfmt(char *spec, int output);
+static int readfield(char **pp);
+static int getfield(struct field *f);
+static void chanset(int n, double v);
+static void bchanset(int n, double v);
+static struct strvar* getsvar(char *svname);
+static double l_in(char *);
 
 struct field  *inpfmt = NULL;   /* input record format */
 struct field  *outfmt = NULL;   /* output record structure */
@@ -67,6 +78,7 @@ struct strvar  *svhead = NULL;  /* string variables */
 
 int  blnkeq = 1;                /* blanks compare equal? */
 int  igneol = 0;                /* ignore end of line? */
+int  passive = 0;		/* passive mode (transmit unmatched input) */
 char  sepchar = '\t';           /* input/output separator */
 int  noinput = 0;               /* no input records? */
 int  nbicols = 0;		/* number of binary input columns */
@@ -88,9 +100,11 @@ struct {
 } ipb;                          /* circular lookahead buffer */
 
 
-main(argc, argv)
-int  argc;
-char  *argv[];
+int
+main(
+int  argc,
+char  *argv[]
+)
 {
 	int  i;
 
@@ -101,6 +115,7 @@ char  *argv[];
 	biggerlib();
 #endif
 	varset("PI", ':', 3.14159265358979323846);
+	funset("in", 1, '=', &l_in);
 
 	for (i = 1; i < argc && argv[i][0] == '-'; i++)
 		switch (argv[i][1]) {
@@ -110,6 +125,9 @@ char  *argv[];
 		case 'l':
 			igneol = !igneol;
 			break;
+		case 'p':
+			passive = !passive;
+			break;
 		case 't':
 			sepchar = argv[i][2];
 			break;
@@ -139,12 +157,22 @@ char  *argv[];
 					nbicols = atoi(argv[i]+3);
 				else
 					nbicols = 1;
+				if (nbicols*sizeof(double) > INBSIZ) {
+					eputs(argv[0]);
+					eputs(": too many input columns\n");
+					quit(1);
+				}
 				break;
 			case 'f':
 				if (isdigit(argv[i][3]))
 					nbicols = -atoi(argv[i]+3);
 				else
 					nbicols = -1;
+				if (-nbicols*sizeof(float) > INBSIZ) {
+					eputs(argv[0]);
+					eputs(": too many input columns\n");
+					quit(1);
+				}
 				break;
 			default:
 				goto userr;
@@ -177,11 +205,16 @@ char  *argv[];
 		userr:
 			eputs("Usage: ");
 			eputs(argv[0]);
-eputs(" [-b][-l][-n][-w][-u][-tS][-s svar=sval][-e expr][-f source][-i infmt][-o outfmt] [file]\n");
+eputs(" [-b][-l][-n][-p][-w][-u][-tS][-s svar=sval][-e expr][-f source][-i infmt][-o outfmt] [file]\n");
 			quit(1);
 		}
 
 	if (noinput) {          /* produce a single output record */
+		if (i < argc) {
+			eputs(argv[0]);
+			eputs(": file argument(s) incompatible with -n\n");
+			quit(1);
+		}
 		eclock++;
 		putout();
 		quit(0);
@@ -197,10 +230,12 @@ eputs(" [-b][-l][-n][-w][-u][-tS][-s svar=sval][-e exp
 			execute(argv[i]);
 	
 	quit(0);
+	return 0; /* pro forma return */
 }
 
 
-nbsynch()               /* non-blank starting synch character */
+static void
+nbsynch(void)               /* non-blank starting synch character */
 {
 	if (inpfmt == NULL || (inpfmt->type & F_TYP) != T_LIT)
 		return;
@@ -211,9 +246,10 @@ nbsynch()               /* non-blank starting synch ch
 }
 
 
-int
-getinputrec(fp)		/* get next input record */
-FILE  *fp;
+static int
+getinputrec(		/* get next input record */
+FILE  *fp
+)
 {
 	if (inpfmt != NULL)
 		return(getrec());
@@ -227,8 +263,10 @@ FILE  *fp;
 }
 
 
-execute(file)           /* process a file */
-char  *file;
+static void
+execute(           /* process a file */
+char  *file
+)
 {
 	int  conditional = vardefined("cond");
 	long  nrecs = 0;
@@ -258,9 +296,9 @@ char  *file;
 }
 
 
-putout()                /* produce an output record */
+static void
+putout(void)                /* produce an output record */
 {
-	extern void  chanset(), bchanset();
 
 	colpos = 0;
 	if (outfmt != NULL)
@@ -276,9 +314,42 @@ putout()                /* produce an output record */
 }
 
 
+static double
+l_in(char *funame)	/* function call for $channel */
+{
+	int  n;
+	register char  *cp;
+			/* get argument as integer */
+	n = (int)(argument(1) + .5);
+	if (n != 0)	/* return channel value */
+		return(chanvalue(n));
+			/* determine number of channels */
+	if (noinput || inpfmt != NULL)
+		return(0);
+	if (nbicols > 0)
+		return(nbicols);
+	if (nbicols < 0)
+		return(-nbicols);
+	cp = inpbuf;	/* need to count */
+	for (n = 0; *cp; )
+		if (blnkeq && isspace(sepchar)) {
+			while (isspace(*cp))
+				cp++;
+			n += *cp != '\0';
+			while (*cp && !isspace(*cp))
+				cp++;
+		} else {
+			n += *cp != '\n';
+			while (*cp && *cp++ != sepchar)
+				;
+		}
+	return(n);
+}
+
 double
-chanvalue(n)            /* return value for column n */
-int  n;
+chanvalue(            /* return value for column n */
+int  n
+)
 {
 	int  i;
 	register char  *cp;
@@ -329,9 +400,10 @@ int  n;
 
 
 void
-chanset(n, v)                   /* output column n */
-int  n;
-double  v;
+chanset(                   /* output column n */
+int  n,
+double  v
+)
 {
 	if (colpos == 0)                /* no leading separator */
 		colpos = 1;
@@ -344,9 +416,10 @@ double  v;
 
 
 void
-bchanset(n, v)                   /* output binary channel n */
-int  n;
-double  v;
+bchanset(                   /* output binary channel n */
+int  n,
+double  v
+)
 {
 	static char	zerobuf[sizeof(double)];
 
@@ -363,9 +436,11 @@ double  v;
 }
 
 
-readfmt(spec, output)                   /* read record format */
-char  *spec;
-int  output;
+static void
+readfmt(                   /* read record format */
+char  *spec,
+int  output
+)
 {
 	int  fd;
 	char  *inptr;
@@ -384,7 +459,7 @@ int  output;
 			eputs(": cannot open\n");
 			quit(1);
 		}
-		res = read(fd, inpbuf+1, INBSIZ-1);
+		res = read(fd, inpbuf+2, INBSIZ-2);
 		if (res <= 0 || res >= INBSIZ-1) {
 			eputs(spec);
 			if (res < 0)
@@ -396,7 +471,7 @@ int  output;
 			quit(1);
 		}
 		close(fd);
-		(inptr=inpbuf+1)[res] = '\0';
+		(inptr=inpbuf+2)[res] = '\0';
 	}
 	f = &fmt;                               /* get fields */
 	while ((res = readfield(&inptr)) != F_NUL) {
@@ -429,9 +504,10 @@ int  output;
 }
 
 
-int
-readfield(pp)                   /* get next field in format */
-register char  **pp;
+static int
+readfield(                   /* get next field in format */
+register char  **pp
+)
 {
 	int  type = F_NUL;
 	int  width = 0;
@@ -496,8 +572,9 @@ register char  **pp;
 
 
 struct strvar *
-getsvar(svname)                         /* get string variable */
-char  *svname;
+getsvar(                         /* get string variable */
+char  *svname
+)
 {
 	register struct strvar  *sv;
 	
@@ -513,8 +590,10 @@ char  *svname;
 }
 
 
-svpreset(eqn)                    /* preset a string variable */
-char  *eqn;
+static void
+svpreset(                    /* preset a string variable */
+char  *eqn
+)
 {
 	register struct strvar  *sv;
 	register char  *val;
@@ -533,7 +612,8 @@ char  *eqn;
 }
 
 
-clearrec()			/* clear input record variables */
+static void
+clearrec(void)			/* clear input record variables */
 {
 	register struct field  *f;
 
@@ -552,43 +632,45 @@ clearrec()			/* clear input record variables */
 }
 
 
-getrec()                                /* get next record from file */
+static int
+getrec(void)				/* get next record from file */
 {
 	int  eatline;
 	register struct field  *f;
-	
+
 	while (ipb.chr != EOF) {
-		eatline = !igneol && ipb.chr != '\n';
 		if (blnkeq)             /* beware of nbsynch() */
 			while (isblnk(ipb.chr))
-				scaninp();
+				resetinp();
+		eatline = (!igneol && ipb.chr != '\n');
 		clearrec();		/* start with fresh record */
 		for (f = inpfmt; f != NULL; f = f->next)
 			if (getfield(f) == -1)
 				break;
 		if (f == NULL) {
-			advinp();
+			advinp();       /* got one! */
 			return(1);
 		}
-		resetinp();
+		resetinp();		/* eat false start */
 		if (eatline) {          /* eat rest of line */
 			while (ipb.chr != '\n') {
 				if (ipb.chr == EOF)
 					return(0);
-				scaninp();
+				resetinp();
 			}
-			scaninp();
-			advinp();
+			resetinp();
 		}
 	}
 	return(0);
 }
 
 
-getfield(f)                             /* get next field */
-register struct field  *f;
+static int
+getfield(                             /* get next field */
+register struct field  *f
+)
 {
-	static char  buf[MAXWORD+1];            /* no recursion! */
+	static char  buf[RMAXWORD+1];            /* no recursion! */
 	int  delim, inword;
 	double  d;
 	char  *np;
@@ -621,7 +703,7 @@ register struct field  *f;
 			delim = f->next->f.sl[0];
 		cp = buf;
 		do {
-			if (ipb.chr == EOF)
+			if (ipb.chr == EOF || ipb.chr == '\n')
 				inword = 0;
 			else if (blnkeq && delim != EOF)
 				inword = isblnk(delim) ?
@@ -633,7 +715,7 @@ register struct field  *f;
 				*cp++ = ipb.chr;
 				scaninp();
 			}
-		} while (inword && cp < &buf[MAXWORD]);
+		} while (inword && cp < &buf[RMAXWORD]);
 		*cp = '\0';
 		if (f->f.sv->val == NULL)
 			f->f.sv->val = savqstr(buf);	/* first setting */
@@ -662,7 +744,7 @@ register struct field  *f;
 				*cp++ = ipb.chr;
 				scaninp();
 			}
-		} while (inword && cp < &buf[MAXWORD]);
+		} while (inword && cp < &buf[RMAXWORD]);
 		*cp = '\0';
 		d = np==NULL ? 0. : atof(np);
 		if (!vardefined(f->f.nv))
@@ -672,10 +754,12 @@ register struct field  *f;
 			return(-1);			/* doesn't match! */
 		return(0);
 	}
+	return -1; /* pro forma return */
 }
 
 
-putrec()                                /* output a record */
+static void
+putrec(void)                                /* output a record */
 {
 	char  fmt[32];
 	register int  n;
@@ -725,8 +809,9 @@ putrec()                                /* output a re
 }
 
 
-initinp(fp)                     /* prepare lookahead buffer */
-FILE  *fp;
+static void
+initinp(FILE  *fp)                     /* prepare lookahead buffer */
+
 {
 	ipb.fin = fp;
 	ipb.beg = ipb.end = inpbuf;
@@ -736,7 +821,8 @@ FILE  *fp;
 }
 
 
-scaninp()                       /* scan next character */
+static void
+scaninp(void)                       /* scan next character */
 {
 	if (ipb.chr == EOF)
 		return;
@@ -755,18 +841,22 @@ scaninp()                       /* scan next character
 }
 
 
-advinp()                        /* move home to current position */
+static void
+advinp(void)                        /* move home to current position */
 {
 	ipb.beg = ipb.pos;
 }
 
 
-resetinp()                      /* rewind position and advance 1 */
+static void
+resetinp(void)                      /* rewind position and advance 1 */
 {
 	if (ipb.beg == NULL)            /* full */
 		ipb.beg = ipb.end;
 	ipb.pos = ipb.beg;
 	ipb.chr = *ipb.pos;
+	if (passive)			/* transmit unmatched character? */
+		fputc(ipb.chr, stdout);
 	if (++ipb.beg >= &inpbuf[INBSIZ])
 		ipb.beg = inpbuf;
 	scaninp();
@@ -774,16 +864,14 @@ resetinp()                      /* rewind position and
 
 
 void
-eputs(msg)
-char  *msg;
+eputs(char  *msg)
 {
 	fputs(msg, stderr);
 }
 
 
 void
-wputs(msg)
-char  *msg;
+wputs(char  *msg)
 {
 	if (!nowarn)
 		eputs(msg);
@@ -791,8 +879,7 @@ char  *msg;
 
 
 void
-quit(code)
-int  code;
+quit(int  code)
 {
 	exit(code);
 }