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rcsid[] and sccsid[] and copyright[] are essentially unmaintained (and
unmaintainable).  these days, people use source.  these id's do not provide
any benefit, and do hurt the small install media
(the 33,000 line diff is essentially mechanical)
ok with the idea millert, ok dms

/*	$OpenBSD: rpc_util.c,v 1.14 2009/10/27 23:59:42 deraadt Exp $	*/
/*	$NetBSD: rpc_util.c,v 1.6 1995/08/29 23:05:57 cgd Exp $	*/
/*
 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
 * unrestricted use provided that this legend is included on all tape
 * media and as a part of the software program in whole or part.  Users
 * may copy or modify Sun RPC without charge, but are not authorized
 * to license or distribute it to anyone else except as part of a product or
 * program developed by the user or with the express written consent of
 * Sun Microsystems, Inc.
 *
 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
 *
 * Sun RPC is provided with no support and without any obligation on the
 * part of Sun Microsystems, Inc. to assist in its use, correction,
 * modification or enhancement.
 *
 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
 * OR ANY PART THEREOF.
 *
 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
 * or profits or other special, indirect and consequential damages, even if
 * Sun has been advised of the possibility of such damages.
 *
 * Sun Microsystems, Inc.
 * 2550 Garcia Avenue
 * Mountain View, California  94043
 */

/*
 * rpc_util.c, Utility routines for the RPC protocol compiler
 */
#include <sys/cdefs.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <unistd.h>
#include "rpc_scan.h"
#include "rpc_parse.h"
#include "rpc_util.h"

#define ARGEXT "argument"

static void printwhere(void);

char curline[MAXLINESIZE];	/* current read line */
char *where = curline;		/* current point in line */
int linenum = 0;		/* current line number */

char *infilename;		/* input filename */

#define NFILES 7
char *outfiles[NFILES];		/* output file names */
int nfiles;

FILE *fout;			/* file pointer of current output */
FILE *fin;			/* file pointer of current input */

list *defined;			/* list of defined things */

/*
 * Reinitialize the world
 */
void
reinitialize()
{
	memset(curline, 0, MAXLINESIZE);
	where = curline;
	linenum = 0;
	defined = NULL;
}

/*
 * string equality
 */
int
streq(a, b)
	char *a;
	char *b;
{
	return (strcmp(a, b) == 0);
}

/*
 * find a value in a list
 */
definition *
findval(lst, val, cmp)
	list *lst;
	char *val;
	int (*cmp) (definition *, char *);
{

	for (; lst != NULL; lst = lst->next) {
		if ((*cmp) (lst->val, val)) {
			return (lst->val);
		}
	}
	return (NULL);
}

/*
 * store a value in a list
 */
void
storeval(lstp, val)
	list **lstp;
	definition *val;
{
	list **l;
	list *lst;

	for (l = lstp; *l != NULL; l = (list **) & (*l)->next)
		;
	lst = ALLOC(list);
	if (lst == NULL) {
		fprintf(stderr, "failed in alloc\n");
		exit(1);
	}
	lst->val = val;
	lst->next = NULL;
	*l = lst;
}

static int
findit(definition *def, char *type)
{
	return (streq(def->def_name, type));
}

static char *
fixit(char *type, char *orig)
{
	definition *def;

	def = (definition *) FINDVAL(defined, type, findit);
	if (def == NULL || def->def_kind != DEF_TYPEDEF) {
		return (orig);
	}
	switch (def->def.ty.rel) {
	case REL_VECTOR:
		return (def->def.ty.old_type);
	case REL_ALIAS:
		return (fixit(def->def.ty.old_type, orig));
	default:
		return (orig);
	}
}

char *
fixtype(type)
	char *type;
{
	return (fixit(type, type));
}

char *
stringfix(type)
	char *type;
{
	if (streq(type, "string")) {
		return ("wrapstring");
	} else {
		return (type);
	}
}

void
ptype(prefix, type, follow)
	char *prefix;
	char *type;
	int follow;
{
	if (prefix != NULL) {
		if (streq(prefix, "enum")) {
			fprintf(fout, "enum ");
		} else {
			fprintf(fout, "struct ");
		}
	}
	if (streq(type, "bool")) {
		fprintf(fout, "bool_t ");
	} else if (streq(type, "string")) {
		fprintf(fout, "char *");
	} else {
		fprintf(fout, "%s ", follow ? fixtype(type) : type);
	}
}

static int
typedefed(definition *def, char *type)
{
	if (def->def_kind != DEF_TYPEDEF || def->def.ty.old_prefix != NULL)
		return (0);
	else
		return (streq(def->def_name, type));
}

int
isvectordef(type, rel)
	char *type;
	relation rel;
{
	definition *def;

	for (;;) {
		switch (rel) {
		case REL_VECTOR:
			return (!streq(type, "string"));
		case REL_ARRAY:
			return (0);
		case REL_POINTER:
			return (0);
		case REL_ALIAS:
			def = (definition *) FINDVAL(defined, type, typedefed);
			if (def == NULL)
				return (0);
			type = def->def.ty.old_type;
			rel = def->def.ty.rel;
		}
	}
}

char *
locase(str)
	char *str;
{
	char c;
	static char buf[100];
	char *p = buf;

	while ((c = *str++))
		*p++ = (c >= 'A' && c <= 'Z') ? (c - 'A' + 'a') : c;
	*p = 0;
	return (buf);
}

void
pvname_svc(pname, vnum)
	char *pname;
	char *vnum;
{
	fprintf(fout, "%s_%s_svc", locase(pname), vnum);
}

void
pvname(pname, vnum)
	char *pname;
	char *vnum;
{
	fprintf(fout, "%s_%s", locase(pname), vnum);
}

/*
 * print a useful (?) error message, and then die
 */
void
error(msg)
	char *msg;
{
	printwhere();
	fprintf(stderr, "%s, line %d: ", infilename, linenum);
	fprintf(stderr, "%s\n", msg);
	crash();
}

/*
 * Something went wrong, unlink any files that we may have created and then
 * die.
 */
void
crash()
{
	int i;

	for (i = 0; i < nfiles; i++) {
		(void) unlink(outfiles[i]);
	}
	exit(1);
}

void
record_open(file)
	char *file;
{
	if (nfiles < NFILES) {
		outfiles[nfiles++] = file;
	} else {
		fprintf(stderr, "too many files!\n");
		crash();
	}
}

static char expectbuf[100];
static char *toktostr(tok_kind);

/*
 * error, token encountered was not the expected one
 */
void
expected1(exp1)
	tok_kind exp1;
{
	snprintf(expectbuf, sizeof expectbuf, "expected '%s'",
	    toktostr(exp1));
	error(expectbuf);
}

/*
 * error, token encountered was not one of two expected ones
 */
void
expected2(exp1, exp2)
	tok_kind exp1, exp2;
{
	snprintf(expectbuf, sizeof expectbuf, "expected '%s' or '%s'",
	    toktostr(exp1), toktostr(exp2));
	error(expectbuf);
}

/*
 * error, token encountered was not one of 3 expected ones
 */
void
expected3(exp1, exp2, exp3)
	tok_kind exp1, exp2, exp3;
{
	snprintf(expectbuf, sizeof expectbuf, "expected '%s', '%s' or '%s'",
	    toktostr(exp1), toktostr(exp2), toktostr(exp3));
	error(expectbuf);
}

void
tabify(f, tab)
	FILE *f;
	int tab;
{
	while (tab--) {
		(void) fputc('\t', f);
	}
}

static token tokstrings[] = {
	{TOK_IDENT, "identifier"},
	{TOK_CONST, "const"},
	{TOK_RPAREN, ")"},
	{TOK_LPAREN, "("},
	{TOK_RBRACE, "}"},
	{TOK_LBRACE, "{"},
	{TOK_LBRACKET, "["},
	{TOK_RBRACKET, "]"},
	{TOK_STAR, "*"},
	{TOK_COMMA, ","},
	{TOK_EQUAL, "="},
	{TOK_COLON, ":"},
	{TOK_SEMICOLON, ";"},
	{TOK_UNION, "union"},
	{TOK_STRUCT, "struct"},
	{TOK_SWITCH, "switch"},
	{TOK_CASE, "case"},
	{TOK_DEFAULT, "default"},
	{TOK_ENUM, "enum"},
	{TOK_TYPEDEF, "typedef"},
	{TOK_INT, "int"},
	{TOK_SHORT, "short"},
	{TOK_LONG, "long"},
	{TOK_UNSIGNED, "unsigned"},
	{TOK_DOUBLE, "double"},
	{TOK_FLOAT, "float"},
	{TOK_CHAR, "char"},
	{TOK_STRING, "string"},
	{TOK_OPAQUE, "opaque"},
	{TOK_BOOL, "bool"},
	{TOK_VOID, "void"},
	{TOK_PROGRAM, "program"},
	{TOK_VERSION, "version"},
	{TOK_EOF, "??????"}
};

static char *
toktostr(tok_kind kind)
{
	token *sp;

	for (sp = tokstrings; sp->kind != TOK_EOF && sp->kind != kind; sp++)
		;
	return (sp->str);
}

static void
printbuf(void)
{
	char c;
	int i;
	int cnt;

#	define TABSIZE 4

	for (i = 0; (c = curline[i]); i++) {
		if (c == '\t') {
			cnt = 8 - (i % TABSIZE);
			c = ' ';
		} else {
			cnt = 1;
		}
		while (cnt--) {
			(void) fputc(c, stderr);
		}
	}
}

static void
printwhere()
{
	int i;
	char c;
	int cnt;

	printbuf();
	for (i = 0; i < where - curline; i++) {
		c = curline[i];
		if (c == '\t') {
			cnt = 8 - (i % TABSIZE);
		} else {
			cnt = 1;
		}
		while (cnt--) {
			(void) fputc('^', stderr);
		}
	}
	(void) fputc('\n', stderr);
}

char *
make_argname(pname, vname)
	char *pname;
	char *vname;
{
	char *name;
	int len = strlen(pname) + strlen(vname) + strlen(ARGEXT) + 3;

	name = (char *)malloc(len);
	if (!name) {
		fprintf(stderr, "failed in malloc\n");
		exit(1);
	}
	snprintf(name, len, "%s_%s_%s", locase(pname), vname, ARGEXT);
	return(name);
}

bas_type *typ_list_h;
bas_type *typ_list_t;

void
add_type(len, type)
	int len;
	char *type;
{
	bas_type *ptr;

	if ((ptr = (bas_type *)malloc(sizeof(bas_type))) == (bas_type *)NULL) {
		fprintf(stderr, "failed in malloc\n");
		exit(1);
	}

	ptr->name = type;
	ptr->length = len;
	ptr->next = NULL;
	if (typ_list_t == NULL) {
		typ_list_t = ptr;
		typ_list_h = ptr;
	} else {
		typ_list_t->next = ptr;
		typ_list_t = ptr;
	}
}

bas_type *
find_type(type)
	char *type;
{
	bas_type * ptr;

	ptr = typ_list_h;

	while (ptr != NULL) {
		if (strcmp(ptr->name, type) == 0)
			return(ptr);
		else
			ptr = ptr->next;
	}
	return(NULL);
}