From: Tom London <tbl@research.uucp>
Date: Fri, 16 Feb 1979 11:13:38 +0000 (-0500)
Subject: Bell 32V development
X-Git-Tag: Bell-32V~195
X-Git-Url: https://git.subgeniuskitty.com/unix-history/.git/commitdiff_plain/ae320d114cf360344556a93fbba259ba409e57f4?hp=fabfe7fe54cb18da024e622e60ab2d2e036692f3

Bell 32V development
Work on file usr/src/cmd/awk/lib.c

Co-Authored-By: John Reiser <jfr@research.uucp>
Synthesized-from: 32v
---

diff --git a/usr/src/cmd/awk/lib.c b/usr/src/cmd/awk/lib.c
new file mode 100644
index 0000000000..b7f4f3a424
--- /dev/null
+++ b/usr/src/cmd/awk/lib.c
@@ -0,0 +1,224 @@
+#include "stdio.h"
+#include "awk.def"
+#include "awk.h"
+#include "ctype.h"
+
+FILE	*infile	= NULL;
+char	*file;
+#define	RECSIZE	512
+char	record[RECSIZE];
+char	fields[RECSIZE];
+
+#define	MAXFLD	50
+int	donefld;	/* 1 = implies rec broken into fields */
+int	donerec;	/* 1 = record is valid (no flds have changed) */
+int	mustfld;	/* 1 = NF seen, so always break*/
+
+#define	FINIT	{0, NULL, 0.0, FLD|STR}
+cell fldtab[MAXFLD] = {	/*room for fields */
+	{ "$record", record, 0.0, STR|FLD},
+	FINIT, FINIT, FINIT, FINIT, FINIT, FINIT, FINIT,
+	FINIT, FINIT, FINIT, FINIT, FINIT, FINIT, FINIT,
+	FINIT, FINIT, FINIT, FINIT, FINIT, FINIT, FINIT,
+	FINIT, FINIT, FINIT, FINIT, FINIT, FINIT, FINIT,
+	FINIT, FINIT, FINIT, FINIT, FINIT, FINIT, FINIT,
+	FINIT, FINIT, FINIT, FINIT, FINIT, FINIT, FINIT,
+	FINIT, FINIT, FINIT, FINIT, FINIT, FINIT, FINIT
+};
+int	maxfld	= 0;	/* last used field */
+
+
+getrec()
+{
+	register char *rr;
+	extern int svargc;
+	extern char **svargv;
+	register c, sep;
+
+	dprintf("**RS=%o, **FS=%o\n", **RS, **FS, NULL);
+	donefld = 0;
+	donerec = 1;
+	record[0] = 0;
+	while (svargc > 0) {
+		dprintf("svargc=%d, *svargv=%s\n", svargc, *svargv, NULL);
+		if (infile == NULL) {	/* have to open a new file */
+			if (member('=', *svargv)) {	/* it's a var=value argument */
+				setclvar(*svargv);
+				svargv++;
+				svargc--;
+				continue;
+			}
+			*FILENAME = file = *svargv;
+			dprintf("opening file %s\n", file, NULL, NULL);
+			if (*file == '-')
+				infile = stdin;
+			else if ((infile = fopen(file, "r")) == NULL)
+				error(FATAL, "can't open %s", file);
+		}
+		if ((sep = **RS) == 0)
+			sep = '\n';
+		for (rr = record; ; ) {
+			for (; (c=getc(infile)) != sep && c != EOF; *rr++ = c)
+				;
+			if (**RS == sep || c == EOF)
+				break;
+			if ((c = getc(infile)) == '\n' || c == EOF)	/* 2 in a row */
+				break;
+			*rr++ = '\n';
+			*rr++ = c;
+		}
+		if (rr > record+RECSIZE)
+			error(FATAL, "record `%.20s...' too long", record);
+		*rr = 0;
+		if (mustfld)
+			fldbld();
+		if (c != EOF)	/* normal record */
+			return(1);
+		/* EOF arrived on this file; set up next */
+		if (infile != stdin)
+			fclose(infile);
+		infile = NULL;
+		svargc--;
+		svargv++;
+	}
+	return(0);	/* true end of file */
+}
+
+setclvar(s)	/* set var=value from s */
+char *s;
+{
+	char *p;
+	cell *q;
+
+	for (p=s; *p != '='; p++)
+		;
+	*p++ = 0;
+	q = setsymtab(s, tostring(p), 0.0, STR, symtab);
+	setsval(q, p);
+	dprintf("command line set %s to |%s|\n", s, p, NULL);
+}
+
+fldbld()
+{
+	register char *r, *fr, sep;
+	int i, j;
+
+	r = record;
+	fr = fields;
+	if ((sep = **FS) == ' ')
+		for (i = 0; ; ) {
+			while (*r == ' ' || *r == '\t' || *r == '\n')
+				r++;
+			if (*r == 0)
+				break;
+			i++;
+			if (i >= MAXFLD)
+				error(FATAL, "record `%.20s...' has too many fields", record);
+			if (!(fldtab[i].tval&FLD))
+				xfree(fldtab[i].sval);
+			fldtab[i].sval = fr;
+			fldtab[i].tval = FLD | STR;
+			do
+				*fr++ = *r++;
+			while (*r != ' ' && *r != '\t' && *r != '\n' && *r != '\0');
+			*fr++ = 0;
+		}
+	else
+		for (i = 0; ; ) {
+			i++;
+			if (i >= MAXFLD)
+				error(FATAL, "record `%.20s...' has too many fields", record);
+			if (!(fldtab[i].tval&FLD))
+				xfree(fldtab[i].sval);
+			fldtab[i].sval = fr;
+			fldtab[i].tval = FLD | STR;
+			while (*r != sep && *r != '\n' && *r != '\0')	/* \n always a separator */
+				*fr++ = *r++;
+			*fr++ = '\0';
+			if (*r == 0) break;
+			r++;
+		}
+	*fr = 0;
+	for (j=maxfld; j>i; j--) {	/* clean out junk from previous record */
+		if (!(fldtab[j].tval&FLD))
+			xfree(fldtab[j].sval);
+		fldtab[j].tval = STR | FLD;
+		fldtab[j].sval = NULL;
+	}
+	maxfld = i;
+	donefld = 1;
+	for(i=1; i<=maxfld; i++)
+		if(isnumber(fldtab[i].sval))
+		{	fldtab[i].fval = atof(fldtab[i].sval);
+			fldtab[i].tval |= NUM;
+		}
+	setfval(lookup("NF", symtab), (awkfloat) maxfld);
+	if (dbg)
+		for (i = 0; i <= maxfld; i++)
+			printf("field %d: |%s|\n", i, fldtab[i].sval);
+}
+
+recbld()
+{
+	int i;
+	register char *r, *p;
+
+	if (donefld == 0 || donerec == 1)
+		return;
+	r = record;
+	for (i = 1; i <= *NF; i++) {
+		p = getsval(&fldtab[i]);
+		while (*r++ = *p++)
+			;
+		*(r-1) = **OFS;
+	}
+	*(r-1) = '\0';
+	dprintf("in recbld FS=%o, recloc=%o\n", **FS, recloc, NULL);
+	recloc->tval = STR | FLD;
+	dprintf("in recbld FS=%o, recloc=%o\n", **FS, recloc, NULL);
+	if (r > record+RECSIZE)
+		error(FATAL, "built giant record `%.20s...'", record);
+	dprintf("recbld = |%s|\n", record, NULL, NULL);
+}
+
+cell *fieldadr(n)
+{
+	if (n >= MAXFLD)
+		error(FATAL, "trying to access field %d", n);
+	return(&fldtab[n]);
+}
+
+int	errorflag	= 0;
+
+yyerror(s) char *s; {
+	fprintf(stderr, "awk: %s near line %d\n", s, lineno);
+	errorflag = 2;
+}
+
+error(f, s, a1, a2, a3, a4, a5, a6, a7) {
+	fprintf(stderr, "awk: ");
+	fprintf(stderr, s, a1, a2, a3, a4, a5, a6, a7);
+	fprintf(stderr, "\n");
+	if (*NR > 0)
+		fprintf(stderr, " record number %g\n", *NR);
+	if (f)
+		exit(2);
+}
+
+PUTS(s) char *s; {
+	dprintf("%s\n", s, NULL, NULL);
+}
+
+/*
+isnumber(s) char *s;
+{
+	for(;*s!=0; s++)
+	{	if(isdigit(*s) || *s=='-' || *s=='.'
+			|| *s=='+' || *s=='e' || *s=='E')
+			continue;
+		else	return(0);
+	}
+	return(1);
+}
+ */
+isnumber(s) char *s; {return(0);}