initial import of NetBSD tree

1 files changed, 507 insertions, 0 deletions

diff --git a/usr.bin/rpcgen/rpc_scan.c b/usr.bin/rpcgen/rpc_scan.c
new file mode 100644
index 00000000000..b46327c5afe
--- /dev/null
+++ b/usr.bin/rpcgen/rpc_scan.c
@@ -0,0 +1,507 @@
+/*	$NetBSD: rpc_scan.c,v 1.4 1995/06/11 21:50:02 pk 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
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)rpc_scan.c 1.11 89/02/22 (C) 1987 SMI";
+#endif
+
+/*
+ * rpc_scan.c, Scanner for the RPC protocol compiler 
+ * Copyright (C) 1987, Sun Microsystems, Inc. 
+ */
+#include <sys/cdefs.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <string.h>
+#include "rpc_scan.h"
+#include "rpc_parse.h"
+#include "rpc_util.h"
+
+static unget_token __P((token *tokp));
+static findstrconst __P((char **, char **));
+static findchrconst __P((char **, char **));
+static findconst __P((char **, char **));
+static findkind __P((char **, token *));
+static cppline __P((char *));
+static directive __P((char *));
+static printdirective __P((char *));
+static docppline __P((char *, int *, char **));
+
+#define startcomment(where) (where[0] == '/' && where[1] == '*')
+#define endcomment(where) (where[-1] == '*' && where[0] == '/')
+
+static int pushed = 0;	/* is a token pushed */
+static token lasttok;	/* last token, if pushed */
+
+/*
+ * scan expecting 1 given token 
+ */
+void
+scan(expect, tokp)
+	tok_kind expect;
+	token *tokp;
+{
+	get_token(tokp);
+	if (tokp->kind != expect) {
+		expected1(expect);
+	}
+}
+
+/*
+ * scan expecting any of the 2 given tokens 
+ */
+void
+scan2(expect1, expect2, tokp)
+	tok_kind expect1;
+	tok_kind expect2;
+	token *tokp;
+{
+	get_token(tokp);
+	if (tokp->kind != expect1 && tokp->kind != expect2) {
+		expected2(expect1, expect2);
+	}
+}
+
+/*
+ * scan expecting any of the 3 given token 
+ */
+void
+scan3(expect1, expect2, expect3, tokp)
+	tok_kind expect1;
+	tok_kind expect2;
+	tok_kind expect3;
+	token *tokp;
+{
+	get_token(tokp);
+	if (tokp->kind != expect1 && tokp->kind != expect2
+	    && tokp->kind != expect3) {
+		expected3(expect1, expect2, expect3);
+	}
+}
+
+/*
+ * scan expecting a constant, possibly symbolic 
+ */
+void
+scan_num(tokp)
+	token *tokp;
+{
+	get_token(tokp);
+	switch (tokp->kind) {
+	case TOK_IDENT:
+		break;
+	default:
+		error("constant or identifier expected");
+	}
+}
+
+/*
+ * Peek at the next token 
+ */
+void
+peek(tokp)
+	token *tokp;
+{
+	get_token(tokp);
+	unget_token(tokp);
+}
+
+/*
+ * Peek at the next token and scan it if it matches what you expect 
+ */
+int
+peekscan(expect, tokp)
+	tok_kind expect;
+	token *tokp;
+{
+	peek(tokp);
+	if (tokp->kind == expect) {
+		get_token(tokp);
+		return (1);
+	}
+	return (0);
+}
+
+/*
+ * Get the next token, printing out any directive that are encountered. 
+ */
+void
+get_token(tokp)
+	token *tokp;
+{
+	int commenting;
+
+	if (pushed) {
+		pushed = 0;
+		*tokp = lasttok;
+		return;
+	}
+	commenting = 0;
+	for (;;) {
+		if (*where == 0) {
+			for (;;) {
+				if (!fgets(curline, MAXLINESIZE, fin)) {
+					tokp->kind = TOK_EOF;
+					*where = 0;
+					return;
+				}
+				linenum++;
+				if (commenting) {
+					break;
+				} else if (cppline(curline)) {
+					docppline(curline, &linenum, 
+						  &infilename);
+				} else if (directive(curline)) {
+					printdirective(curline);
+				} else {
+					break;
+				}
+			}
+			where = curline;
+		} else if (isspace(*where)) {
+			while (isspace(*where)) {
+				where++;	/* eat */
+			}
+		} else if (commenting) {
+			for (where++; *where; where++) {
+				if (endcomment(where)) {
+					where++;
+					commenting--;
+					break;
+				}
+			}
+		} else if (startcomment(where)) {
+			where += 2;
+			commenting++;
+		} else {
+			break;
+		}
+	}
+
+	/*
+	 * 'where' is not whitespace, comment or directive Must be a token! 
+	 */
+	switch (*where) {
+	case ':':
+		tokp->kind = TOK_COLON;
+		where++;
+		break;
+	case ';':
+		tokp->kind = TOK_SEMICOLON;
+		where++;
+		break;
+	case ',':
+		tokp->kind = TOK_COMMA;
+		where++;
+		break;
+	case '=':
+		tokp->kind = TOK_EQUAL;
+		where++;
+		break;
+	case '*':
+		tokp->kind = TOK_STAR;
+		where++;
+		break;
+	case '[':
+		tokp->kind = TOK_LBRACKET;
+		where++;
+		break;
+	case ']':
+		tokp->kind = TOK_RBRACKET;
+		where++;
+		break;
+	case '{':
+		tokp->kind = TOK_LBRACE;
+		where++;
+		break;
+	case '}':
+		tokp->kind = TOK_RBRACE;
+		where++;
+		break;
+	case '(':
+		tokp->kind = TOK_LPAREN;
+		where++;
+		break;
+	case ')':
+		tokp->kind = TOK_RPAREN;
+		where++;
+		break;
+	case '<':
+		tokp->kind = TOK_LANGLE;
+		where++;
+		break;
+	case '>':
+		tokp->kind = TOK_RANGLE;
+		where++;
+		break;
+
+	case '"':
+		tokp->kind = TOK_STRCONST;
+		findstrconst(&where, &tokp->str);
+		break;
+	case '\'':
+		tokp->kind = TOK_CHARCONST;
+		findchrconst(&where, &tokp->str);
+		break;
+
+	case '-':
+	case '0':
+	case '1':
+	case '2':
+	case '3':
+	case '4':
+	case '5':
+	case '6':
+	case '7':
+	case '8':
+	case '9':
+		tokp->kind = TOK_IDENT;
+		findconst(&where, &tokp->str);
+		break;
+
+	default:
+		if (!(isalpha(*where) || *where == '_')) {
+			char buf[100];
+			char *p;
+
+			s_print(buf, "illegal character in file: ");
+			p = buf + strlen(buf);
+			if (isprint(*where)) {
+				s_print(p, "%c", *where);
+			} else {
+				s_print(p, "%d", *where);
+			}
+			error(buf);
+		}
+		findkind(&where, tokp);
+		break;
+	}
+}
+
+static
+unget_token(tokp)
+	token *tokp;
+{
+	lasttok = *tokp;
+	pushed = 1;
+}
+
+static
+findstrconst(str, val)
+	char **str;
+	char **val;
+{
+	char *p;
+	int size;
+
+	p = *str;
+	do {
+		*p++;
+	} while (*p && *p != '"');
+	if (*p == 0) {
+		error("unterminated string constant");
+	}
+	p++;
+	size = p - *str;
+	*val = alloc(size + 1);
+	(void) strncpy(*val, *str, size);
+	(*val)[size] = 0;
+	*str = p;
+}
+
+static
+findchrconst(str, val)
+	char **str;
+	char **val;
+{
+	char *p;
+	int size;
+
+	p = *str;
+	do {
+		*p++;
+	} while (*p && *p != '\'');
+	if (*p == 0) {
+		error("unterminated string constant");
+	}
+	p++;
+	size = p - *str;
+	if (size != 3) {
+		error("empty char string");
+	}
+	*val = alloc(size + 1);
+	(void) strncpy(*val, *str, size);
+	(*val)[size] = 0;
+	*str = p;
+}
+
+static
+findconst(str, val)
+	char **str;
+	char **val;
+{
+	char *p;
+	int size;
+
+	p = *str;
+	if (*p == '0' && *(p + 1) == 'x') {
+		p++;
+		do {
+			p++;
+		} while (isxdigit(*p));
+	} else {
+		do {
+			p++;
+		} while (isdigit(*p));
+	}
+	size = p - *str;
+	*val = alloc(size + 1);
+	(void) strncpy(*val, *str, size);
+	(*val)[size] = 0;
+	*str = p;
+}
+
+static token symbols[] = {
+			  {TOK_CONST, "const"},
+			  {TOK_UNION, "union"},
+			  {TOK_SWITCH, "switch"},
+			  {TOK_CASE, "case"},
+			  {TOK_DEFAULT, "default"},
+			  {TOK_STRUCT, "struct"},
+			  {TOK_TYPEDEF, "typedef"},
+			  {TOK_ENUM, "enum"},
+			  {TOK_OPAQUE, "opaque"},
+			  {TOK_BOOL, "bool"},
+			  {TOK_VOID, "void"},
+			  {TOK_CHAR, "char"},
+			  {TOK_INT, "int"},
+			  {TOK_UNSIGNED, "unsigned"},
+			  {TOK_SHORT, "short"},
+			  {TOK_LONG, "long"},
+			  {TOK_FLOAT, "float"},
+			  {TOK_DOUBLE, "double"},
+			  {TOK_STRING, "string"},
+			  {TOK_PROGRAM, "program"},
+			  {TOK_VERSION, "version"},
+			  {TOK_EOF, "??????"},
+};
+
+static
+findkind(mark, tokp)
+	char **mark;
+	token *tokp;
+{
+	int len;
+	token *s;
+	char *str;
+
+	str = *mark;
+	for (s = symbols; s->kind != TOK_EOF; s++) {
+		len = strlen(s->str);
+		if (strncmp(str, s->str, len) == 0) {
+			if (!isalnum(str[len]) && str[len] != '_') {
+				tokp->kind = s->kind;
+				tokp->str = s->str;
+				*mark = str + len;
+				return;
+			}
+		}
+	}
+	tokp->kind = TOK_IDENT;
+	for (len = 0; isalnum(str[len]) || str[len] == '_'; len++);
+	tokp->str = alloc(len + 1);
+	(void) strncpy(tokp->str, str, len);
+	tokp->str[len] = 0;
+	*mark = str + len;
+}
+
+static
+cppline(line)
+	char *line;
+{
+	return (line == curline && *line == '#');
+}
+
+static
+directive(line)
+	char *line;
+{
+	return (line == curline && *line == '%');
+}
+
+static
+printdirective(line)
+	char *line;
+{
+	f_print(fout, "%s", line + 1);
+}
+
+static
+docppline(line, lineno, fname)
+	char *line;
+	int *lineno;
+	char **fname;
+{
+	char *file;
+	int num;
+	char *p;
+
+	line++;
+	while (isspace(*line)) {
+		line++;
+	}
+	num = atoi(line);
+	while (isdigit(*line)) {
+		line++;
+	}
+	while (isspace(*line)) {
+		line++;
+	}
+	if (*line != '"') {
+		error("preprocessor error");
+	}
+	line++;
+	p = file = alloc(strlen(line) + 1);
+	while (*line && *line != '"') {
+		*p++ = *line++;
+	}
+	if (*line == 0) {
+		error("preprocessor error");
+	}
+	*p = 0;
+	if (*file == 0) {
+		*fname = NULL;
+	} else {
+		*fname = file;
+	}
+	*lineno = num - 1;
+}