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-rw-r--r--bin/catsh/mksyntax.c332
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diff --git a/bin/catsh/mksyntax.c b/bin/catsh/mksyntax.c
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--- a/bin/catsh/mksyntax.c
+++ /dev/null
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-/*-
- * SPDX-License-Identifier: BSD-3-Clause
- *
- * Copyright (c) 1991, 1993
- *	The Regents of the University of California.  All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#if 0
-#ifndef lint
-static char const copyright[] =
-"@(#) Copyright (c) 1991, 1993\n\
-	The Regents of the University of California.  All rights reserved.\n";
-#endif /* not lint */
-
-#ifndef lint
-static char sccsid[] = "@(#)mksyntax.c	8.2 (Berkeley) 5/4/95";
-#endif /* not lint */
-#endif
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD: releng/12.0/bin/sh/mksyntax.c 334008 2018-05-21 21:52:48Z jilles $");
-
-/*
- * This program creates syntax.h and syntax.c.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include "parser.h"
-
-
-struct synclass {
-	const char *name;
-	const char *comment;
-};
-
-/* Syntax classes */
-static const struct synclass synclass[] = {
-	{ "CWORD",	"character is nothing special" },
-	{ "CNL",	"newline character" },
-	{ "CQNL",	"newline character in quotes" },
-	{ "CBACK",	"a backslash character" },
-	{ "CSBACK",	"a backslash character in single quotes" },
-	{ "CSQUOTE",	"single quote" },
-	{ "CDQUOTE",	"double quote" },
-	{ "CENDQUOTE",	"a terminating quote" },
-	{ "CBQUOTE",	"backwards single quote" },
-	{ "CVAR",	"a dollar sign" },
-	{ "CENDVAR",	"a '}' character" },
-	{ "CLP",	"a left paren in arithmetic" },
-	{ "CRP",	"a right paren in arithmetic" },
-	{ "CEOF",	"end of file" },
-	{ "CCTL",	"like CWORD, except it must be escaped" },
-	{ "CSPCL",	"these terminate a word" },
-	{ "CIGN",       "character should be ignored" },
-	{ NULL,		NULL }
-};
-
-
-/*
- * Syntax classes for is_ functions.  Warning:  if you add new classes
- * you may have to change the definition of the is_in_name macro.
- */
-static const struct synclass is_entry[] = {
-	{ "ISDIGIT",	"a digit" },
-	{ "ISUPPER",	"an upper case letter" },
-	{ "ISLOWER",	"a lower case letter" },
-	{ "ISUNDER",	"an underscore" },
-	{ "ISSPECL",	"the name of a special parameter" },
-	{ NULL, 	NULL }
-};
-
-static const char writer[] = "\
-/*\n\
- * This file was generated by the mksyntax program.\n\
- */\n\
-\n";
-
-
-static FILE *cfile;
-static FILE *hfile;
-
-static void add_default(void);
-static void finish(void);
-static void init(const char *);
-static void add(const char *, const char *);
-static void output_type_macros(void);
-
-int
-main(int argc __unused, char **argv __unused)
-{
-	int i;
-	char buf[80];
-	int pos;
-
-	/* Create output files */
-	if ((cfile = fopen("syntax.c", "w")) == NULL) {
-		perror("syntax.c");
-		exit(2);
-	}
-	if ((hfile = fopen("syntax.h", "w")) == NULL) {
-		perror("syntax.h");
-		exit(2);
-	}
-	fputs(writer, hfile);
-	fputs(writer, cfile);
-
-	fputs("#include <sys/cdefs.h>\n", hfile);
-	fputs("#include <limits.h>\n\n", hfile);
-
-	/* Generate the #define statements in the header file */
-	fputs("/* Syntax classes */\n", hfile);
-	for (i = 0 ; synclass[i].name ; i++) {
-		sprintf(buf, "#define %s %d", synclass[i].name, i);
-		fputs(buf, hfile);
-		for (pos = strlen(buf) ; pos < 32 ; pos = (pos + 8) & ~07)
-			putc('\t', hfile);
-		fprintf(hfile, "/* %s */\n", synclass[i].comment);
-	}
-	putc('\n', hfile);
-	fputs("/* Syntax classes for is_ functions */\n", hfile);
-	for (i = 0 ; is_entry[i].name ; i++) {
-		sprintf(buf, "#define %s %#o", is_entry[i].name, 1 << i);
-		fputs(buf, hfile);
-		for (pos = strlen(buf) ; pos < 32 ; pos = (pos + 8) & ~07)
-			putc('\t', hfile);
-		fprintf(hfile, "/* %s */\n", is_entry[i].comment);
-	}
-	putc('\n', hfile);
-	fputs("#define SYNBASE (1 - CHAR_MIN)\n", hfile);
-	fputs("#define PEOF -SYNBASE\n\n", hfile);
-	putc('\n', hfile);
-	fputs("#define BASESYNTAX (basesyntax + SYNBASE)\n", hfile);
-	fputs("#define DQSYNTAX (dqsyntax + SYNBASE)\n", hfile);
-	fputs("#define SQSYNTAX (sqsyntax + SYNBASE)\n", hfile);
-	fputs("#define ARISYNTAX (arisyntax + SYNBASE)\n", hfile);
-	putc('\n', hfile);
-	output_type_macros();		/* is_digit, etc. */
-	putc('\n', hfile);
-
-	/* Generate the syntax tables. */
-	fputs("#include \"parser.h\"\n", cfile);
-	fputs("#include \"shell.h\"\n", cfile);
-	fputs("#include \"syntax.h\"\n\n", cfile);
-
-	fputs("/* syntax table used when not in quotes */\n", cfile);
-	init("basesyntax");
-	add_default();
-	add("\n", "CNL");
-	add("\\", "CBACK");
-	add("'", "CSQUOTE");
-	add("\"", "CDQUOTE");
-	add("`", "CBQUOTE");
-	add("$", "CVAR");
-	add("}", "CENDVAR");
-	add("<>();&| \t", "CSPCL");
-	finish();
-
-	fputs("\n/* syntax table used when in double quotes */\n", cfile);
-	init("dqsyntax");
-	add_default();
-	add("\n", "CQNL");
-	add("\\", "CBACK");
-	add("\"", "CENDQUOTE");
-	add("`", "CBQUOTE");
-	add("$", "CVAR");
-	add("}", "CENDVAR");
-	/* ':/' for tilde expansion, '-^]' for [a\-x] pattern ranges */
-	add("!*?[]=~:/-^", "CCTL");
-	finish();
-
-	fputs("\n/* syntax table used when in single quotes */\n", cfile);
-	init("sqsyntax");
-	add_default();
-	add("\n", "CQNL");
-	add("\\", "CSBACK");
-	add("'", "CENDQUOTE");
-	/* ':/' for tilde expansion, '-^]' for [a\-x] pattern ranges */
-	add("!*?[]=~:/-^", "CCTL");
-	finish();
-
-	fputs("\n/* syntax table used when in arithmetic */\n", cfile);
-	init("arisyntax");
-	add_default();
-	add("\n", "CQNL");
-	add("\\", "CBACK");
-	add("`", "CBQUOTE");
-	add("\"", "CIGN");
-	add("$", "CVAR");
-	add("}", "CENDVAR");
-	add("(", "CLP");
-	add(")", "CRP");
-	finish();
-
-	fputs("\n/* character classification table */\n", cfile);
-	init("is_type");
-	add("0123456789", "ISDIGIT");
-	add("abcdefghijklmnopqrstuvwxyz", "ISLOWER");
-	add("ABCDEFGHIJKLMNOPQRSTUVWXYZ", "ISUPPER");
-	add("_", "ISUNDER");
-	add("#?$!-*@", "ISSPECL");
-	finish();
-
-	exit(0);
-}
-
-
-/*
- * Output the header and declaration of a syntax table.
- */
-
-static void
-init(const char *name)
-{
-	fprintf(hfile, "extern const char %s[];\n", name);
-	fprintf(cfile, "const char %s[SYNBASE + CHAR_MAX + 1] = {\n", name);
-}
-
-
-static void
-add_one(const char *key, const char *type)
-{
-	fprintf(cfile, "\t[SYNBASE + %s] = %s,\n", key, type);
-}
-
-
-/*
- * Add default values to the syntax table.
- */
-
-static void
-add_default(void)
-{
-	add_one("PEOF",                "CEOF");
-	add_one("CTLESC",              "CCTL");
-	add_one("CTLVAR",              "CCTL");
-	add_one("CTLENDVAR",           "CCTL");
-	add_one("CTLBACKQ",            "CCTL");
-	add_one("CTLBACKQ + CTLQUOTE", "CCTL");
-	add_one("CTLARI",              "CCTL");
-	add_one("CTLENDARI",           "CCTL");
-	add_one("CTLQUOTEMARK",        "CCTL");
-	add_one("CTLQUOTEEND",         "CCTL");
-}
-
-
-/*
- * Output the footer of a syntax table.
- */
-
-static void
-finish(void)
-{
-	fputs("};\n", cfile);
-}
-
-
-/*
- * Add entries to the syntax table.
- */
-
-static void
-add(const char *p, const char *type)
-{
-	for (; *p; ++p) {
-		char c = *p;
-		switch (c) {
-		case '\t': c = 't';  break;
-		case '\n': c = 'n';  break;
-		case '\'': c = '\''; break;
-		case '\\': c = '\\'; break;
-
-		default:
-			fprintf(cfile, "\t[SYNBASE + '%c'] = %s,\n", c, type);
-			continue;
-		}
-		fprintf(cfile, "\t[SYNBASE + '\\%c'] = %s,\n", c, type);
-	}
-}
-
-
-/*
- * Output character classification macros (e.g. is_digit).  If digits are
- * contiguous, we can test for them quickly.
- */
-
-static const char *macro[] = {
-	"#define is_digit(c)\t((unsigned int)((c) - '0') <= 9)",
-	"#define is_eof(c)\t((c) == PEOF)",
-	"#define is_alpha(c)\t((is_type+SYNBASE)[(int)c] & (ISUPPER|ISLOWER))",
-	"#define is_name(c)\t((is_type+SYNBASE)[(int)c] & (ISUPPER|ISLOWER|ISUNDER))",
-	"#define is_in_name(c)\t((is_type+SYNBASE)[(int)c] & (ISUPPER|ISLOWER|ISUNDER|ISDIGIT))",
-	"#define is_special(c)\t((is_type+SYNBASE)[(int)c] & (ISSPECL|ISDIGIT))",
-	"#define digit_val(c)\t((c) - '0')",
-	NULL
-};
-
-static void
-output_type_macros(void)
-{
-	const char **pp;
-
-	for (pp = macro ; *pp ; pp++)
-		fprintf(hfile, "%s\n", *pp);
-}