271 lines
6.9 KiB
Plaintext
271 lines
6.9 KiB
Plaintext
/* $NetBSD: fsi_lex.l,v 1.3 2001/05/13 18:06:59 veego Exp $ */
|
|
|
|
%{
|
|
/*
|
|
* Copyright (c) 1997-2001 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 acknowledgment:
|
|
* 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: fsi_lex.l,v 1.4.2.2 2001/01/10 03:23:33 ezk Exp
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* Lexical analyzer for fsinfo.
|
|
* TODO: Needs rewriting.
|
|
*/
|
|
|
|
#ifdef FLEX_SCANNER
|
|
static int yylineno;
|
|
# define INIT_STATE { \
|
|
switch ((yy_start - 1) / 2) { \
|
|
case 0: \
|
|
BEGIN F; \
|
|
break; \
|
|
} \
|
|
}
|
|
|
|
#else /* not FLEX_SCANNER */
|
|
|
|
/*
|
|
* Using old lex...
|
|
*/
|
|
# define INIT_STATE { \
|
|
switch (yybgin - yysvec - 1) { \
|
|
case 0: \
|
|
BEGIN F; \
|
|
break; \
|
|
} \
|
|
}
|
|
|
|
#endif /* end FLEX_SCANNER */
|
|
|
|
#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 <fsi_data.h>
|
|
#include <fsinfo.h>
|
|
#include <fsi_gram.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 using 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 */
|
|
#endif /* FLEX_SCANNER */
|
|
|
|
/*
|
|
* 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 */
|
|
|
|
YYSTYPE yylval;
|
|
static char *fsi_filename;
|
|
static char *optr;
|
|
static char ostr[1024];
|
|
static int find_resword(char *);
|
|
static int quoted;
|
|
|
|
struct r {
|
|
char *rw;
|
|
int tok;
|
|
} rr[] = {
|
|
{ "->", tEQ },
|
|
{ "arch", tARCH },
|
|
{ "as", tAS },
|
|
{ "automount", tAUTOMOUNT },
|
|
{ "cluster", tCLUSTER },
|
|
{ "config", tCONFIG },
|
|
{ "direct", tDIRECT },
|
|
{ "dumpset", tDUMPSET },
|
|
{ "exportfs", tEXPORTFS },
|
|
{ "freq", tFREQ },
|
|
{ "from", tFROM },
|
|
{ "fs", tFS },
|
|
{ "fstype", tFSTYPE },
|
|
{ "host", tHOST },
|
|
{ "hwaddr", tHWADDR },
|
|
{ "inaddr", tINADDR },
|
|
{ "localhost", tLOCALHOST },
|
|
{ "log", tLOG },
|
|
{ "mount", tMOUNT },
|
|
{ "netif", tNETIF },
|
|
{ "netmask", tNETMASK },
|
|
{ "nfsalias", tNFSEQ },
|
|
{ "opts", tOPTS },
|
|
{ "os", tOS },
|
|
{ "passno", tPASSNO },
|
|
{ "sel", tSEL },
|
|
{ "volname", tVOLNAME },
|
|
{ 0, 0 },
|
|
};
|
|
#define NRES_WORDS (sizeof(rr)/sizeof(rr[0])-1)
|
|
|
|
%}
|
|
|
|
%start F Q
|
|
|
|
%%
|
|
INIT_STATE; /* witchcraft */
|
|
|
|
<F>[^ \t\n"={}]+ { return find_resword(yytext); } /* dummy " */
|
|
<F>[ \t] ;
|
|
<F>"\n" { yylineno++; }
|
|
<F>[={}] { return *yytext; }
|
|
|
|
<F>\" { BEGIN Q; optr = ostr; quoted = 1; }
|
|
<Q>\n { yylineno++; yyerror("\" expected"); BEGIN F; }
|
|
<Q>\\b { *optr++ = '\b'; /* escape */ }
|
|
<Q>\\t { *optr++ = '\t'; /* escape */ }
|
|
<Q>\\\" { *optr++ = '\"'; /* escape */ }
|
|
<Q>\\\\ { *optr++ = '\\'; /* escape */ }
|
|
<Q>\\\n { yylineno++; /* continue */ }
|
|
<Q>\\r { *optr++ = '\r'; /* escape */ }
|
|
<Q>\\n { *optr++ = '\n'; /* escape */ }
|
|
<Q>\\f { *optr++ = '\f'; /* escape */ }
|
|
<Q>"\\ " { *optr++ = ' '; /* force space */ }
|
|
<Q>\\. { yyerror("Unknown \\ sequence"); }
|
|
<Q>([ \t]|"\\\n"){2,} { char *p = (char *) yytext-1; while ((p = strchr(p+1, '\n'))) yylineno++; }
|
|
<Q>\" { BEGIN F; quoted = 0;
|
|
*optr = '\0';
|
|
yylval.s = strdup(ostr);
|
|
return tSTR;
|
|
}
|
|
<Q>. { *optr++ = *yytext; }
|
|
|
|
%%
|
|
|
|
|
|
static int
|
|
find_resword(char *s)
|
|
{
|
|
int tok = 0;
|
|
int l = 0, m = NRES_WORDS/2, h = NRES_WORDS-1;
|
|
int rc = 0;
|
|
|
|
m = NRES_WORDS/2;
|
|
|
|
#define FSTRCMP(p, q) ((*(p) == *(q)) ? strcmp((p)+1, (q)+1) : *(p) - *(q))
|
|
|
|
while ((l <= h) && (rc = FSTRCMP(s, rr[m].rw))) {
|
|
if (rc < 0)
|
|
h = m - 1;
|
|
else
|
|
l = m + 1;
|
|
m = (h + l) / 2;
|
|
}
|
|
|
|
if (rc == 0)
|
|
tok = rr[m].tok;
|
|
|
|
switch (tok) {
|
|
case tLOCALHOST:
|
|
s = "${host}";
|
|
/* fall through... */
|
|
case 0:
|
|
yylval.s = strdup(s);
|
|
tok = tSTR;
|
|
/* fall through... */
|
|
default:
|
|
return tok;
|
|
}
|
|
}
|
|
|
|
|
|
int
|
|
yyerror(char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
va_start(ap, fmt);
|
|
col_cleanup(0);
|
|
fprintf(stderr, "%s:%d: ", fsi_filename ? fsi_filename : "/dev/stdin", yylineno);
|
|
vfprintf(stderr, fmt, ap);
|
|
fputc('\n', stderr);
|
|
parse_errors++;
|
|
va_end(ap);
|
|
if (0) unput(0);/* dummy to shut gcc up: "unput defined but not used" */
|
|
return 0;
|
|
}
|
|
|
|
|
|
ioloc *
|
|
current_location(void)
|
|
{
|
|
ioloc *ip = CALLOC(struct ioloc);
|
|
ip->i_line = yylineno;
|
|
ip->i_file = fsi_filename;
|
|
return ip;
|
|
}
|
|
|
|
|
|
/*
|
|
* 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 */
|