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authorobrien <obrien@FreeBSD.org>1998-08-23 22:07:21 +0000
committerobrien <obrien@FreeBSD.org>1998-08-23 22:07:21 +0000
commit663d5a0f32ed8dfc091ffb6153161591ac6ba563 (patch)
tree60b090a6cbdb64326bb128ea49a231d08eb2680e /contrib/amd/amd/conf_tok.l
downloadFreeBSD-src-663d5a0f32ed8dfc091ffb6153161591ac6ba563.zip
FreeBSD-src-663d5a0f32ed8dfc091ffb6153161591ac6ba563.tar.gz
Virgin import of AMD (am-utils) v6.0a16
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diff --git a/contrib/amd/amd/conf_tok.l b/contrib/amd/amd/conf_tok.l
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+%{
+/*
+ * Copyright (c) 1997-1998 Erez Zadok
+ * Copyright (c) 1989 Jan-Simon Pendry
+ * Copyright (c) 1989 Imperial College of Science, Technology & Medicine
+ * Copyright (c) 1989 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Jan-Simon Pendry at Imperial College, London.
+ *
+ * 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. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. 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.
+ *
+ * %W% (Berkeley) %G%
+ *
+ * $Id: conf_tok.l,v 5.2.2.1 1992/02/09 15:09:36 jsp beta $
+ *
+ */
+
+/*
+ * Lexical analyzer for AMD configuration parser.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif /* HAVE_CONFIG_H */
+/*
+ * Some systems include a definition for the macro ECHO in <sys/ioctl.h>,
+ * and their (bad) version of lex defines it too at the very beginning of
+ * the generated lex.yy.c file (before it can be easily undefined),
+ * resulting in a conflict. So undefine it here before needed.
+ * Luckily, it does not appear that this macro is actually used in the rest
+ * of the generated lex.yy.c file.
+ */
+#ifdef ECHO
+# undef ECHO
+#endif /* ECHO */
+#include <am_defs.h>
+#include <amd.h>
+#include <conf_parse.h>
+/* and once again undefine this, just in case */
+#ifdef ECHO
+# undef ECHO
+#endif /* ECHO */
+
+/*
+ * There are some things that need to be defined only if useing GNU flex.
+ * These must not be defined if using standard lex
+ */
+#ifdef FLEX_SCANNER
+# ifndef ECHO
+# define ECHO (void) fwrite( yytext, yyleng, 1, yyout )
+# endif /* not ECHO */
+int yylineno = 0;
+#endif /* FLEX_SCANNER */
+
+int yylex(void);
+/*
+ * some systems such as DU-4.x have a different GNU flex in /usr/bin
+ * which automatically generates yywrap macros and symbols. So I must
+ * distinguish between them and when yywrap is actually needed.
+ */
+#ifndef yywrap
+int yywrap(void);
+#endif /* not yywrap */
+
+#define TOK_DEBUG 0
+
+#if TOK_DEBUG
+# define dprintf(f,s) fprintf(stderr, (f), yylineno, (s))
+# define amu_return(v)
+#else
+# define dprintf(f,s)
+# define amu_return(v) return((v))
+#endif /* TOK_DEBUG */
+
+/* no need to use yyunput() or yywrap() */
+#define YY_NO_UNPUT
+#define YY_SKIP_YYWRAP
+
+%}
+
+DIGIT [0-9]
+ALPHA [A-Za-z]
+ALPHANUM [A-Za-z0-9]
+SYMBOL [A-Za-z0-9_-]
+PATH [A-Za-z0-9_-/]
+NONWSCHAR [^ \t\n\[\]=]
+NONWSEQCHAR [^ \t\n\[\]]
+NONNL [^\n]
+NONQUOTE [^\"]
+
+%%
+
+\n {
+ yylineno++;
+ amu_return(NEWLINE);
+ }
+
+\[ {
+ dprintf("%8d: Left bracket \"%s\"\n", yytext);
+ yylval.strtype = strdup((char *)yytext);
+ amu_return(LEFT_BRACKET);
+ }
+
+\] {
+ dprintf("%8d: Right bracket \"%s\"\n", yytext);
+ yylval.strtype = strdup((char *)yytext);
+ amu_return(RIGHT_BRACKET);
+ }
+
+= {
+ dprintf("%8d: Equal \"%s\"\n", yytext);
+ yylval.strtype = strdup((char *)yytext);
+ amu_return(EQUAL);
+ }
+
+[ \t]* {
+ dprintf("%8d: Whitespace \"%s\"\n", yytext);
+ }
+"#"[^\n]*\n {
+ /* a comment line includes the terminating \n */
+ yylineno++;
+ yytext[strlen((char *)yytext)-1] = '\0';
+ dprintf("%8d: Comment \"%s\"\n", yytext);
+ }
+
+{NONWSCHAR}{NONWSCHAR}* {
+ dprintf("%8d: Non-WS string \"%s\"\n", yytext);
+ yylval.strtype = strdup((char *)yytext);
+ amu_return(NONWS_STRING);
+ }
+
+\"{NONQUOTE}{NONQUOTE}*\" {
+ dprintf("%8d: QUOTED-Non-WS-EQ string \"%s\"\n", yytext);
+ /* must strip quotes */
+ yytext[strlen((char *)yytext)-1] = '\0';
+ yylval.strtype = strdup((char *)&yytext[1]);
+ amu_return(QUOTED_NONWSEQ_STRING);
+ }
+
+{NONWSEQCHAR}{NONWSEQCHAR}* {
+ dprintf("%8d: Non-WS-EQ string \"%s\"\n", yytext);
+ yylval.strtype = strdup((char *)yytext);
+ amu_return(NONWSEQ_STRING);
+ }
+
+%%
+
+/*
+ * some systems such as DU-4.x have a different GNU flex in /usr/bin
+ * which automatically generates yywrap macros and symbols. So I must
+ * distinguish between them and when yywrap is actually needed.
+ */
+#ifndef yywrap
+int yywrap(void)
+{
+ return 1;
+}
+#endif /* not yywrap */
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