diff options
Diffstat (limited to 'usr.sbin/config/lang.l')
| -rw-r--r-- | usr.sbin/config/lang.l | 309 |
1 files changed, 0 insertions, 309 deletions
diff --git a/usr.sbin/config/lang.l b/usr.sbin/config/lang.l deleted file mode 100644 index 4eb94da..0000000 --- a/usr.sbin/config/lang.l +++ /dev/null @@ -1,309 +0,0 @@ -%{ -/*- - * Copyright (c) 1980, 1993 - * The Regents of the University of California. All rights reserved. - * - * 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. - * 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. - * - * @(#)lang.l 8.1 (Berkeley) 6/6/93 - * $FreeBSD$ - */ - -#include <assert.h> -#include <ctype.h> -#include <err.h> -#include <string.h> -#include "y.tab.h" -#include "config.h" - -#define YY_NO_UNPUT - -/* - * Data for returning to previous files from include files. - */ -struct incl { - struct incl *in_prev; /* previous includes in effect, if any */ - YY_BUFFER_STATE in_buf; /* previous lex state */ - const char *in_fname; /* previous file name */ - int in_lineno; /* previous line number */ - int in_ateof; /* token to insert at EOF */ -}; -static struct incl *inclp; -static const char *lastfile; - -/* - * Key word table - */ - -struct kt { - const char *kt_name; - int kt_val; -} key_words[] = { - { "config", CONFIG }, - { "cpu", CPU }, - { "nocpu", NOCPU }, - { "device", DEVICE }, - { "devices", DEVICE }, - { "nodevice", NODEVICE }, - { "nodevices", NODEVICE }, - { "env", ENV }, - { "hints", HINTS }, - { "ident", IDENT }, - { "machine", ARCH }, /* MACHINE is defined in /sys/param.h */ - { "makeoption", MAKEOPTIONS }, - { "makeoptions", MAKEOPTIONS }, - { "nomakeoption", NOMAKEOPTION }, - { "nomakeoptions", NOMAKEOPTION }, - { "maxusers", MAXUSERS }, - { "profile", PROFILE }, - { "option", OPTIONS }, - { "options", OPTIONS }, - { "nooption", NOOPTION }, - { "nooptions", NOOPTION }, - { "include", INCLUDE }, - { "files", FILES }, - { 0, 0 }, -}; - - -static int endinclude(void); -int include(const char *, int); -int kw_lookup(char *); -unsigned int octal(const char *); -unsigned int hex(const char *); -int yyerror(const char *); - -%} -ID [A-Za-z_][-A-Za-z_0-9]* -PATH [./][-/.%^A-Za-z_0-9]+ -%START TOEOL -%% -{ID} { - int i; - - BEGIN 0; - if ((i = kw_lookup(yytext)) == -1) - { - yylval.str = strdup(yytext); - return ID; - } - return i; - } -\\\"[^"]+\\\" { - BEGIN 0; - yytext[yyleng-2] = '"'; - yytext[yyleng-1] = '\0'; - yylval.str = strdup(yytext + 1); - return ID; - } -\"[^"]+\" { - BEGIN 0; - yytext[yyleng-1] = '\0'; - yylval.str = strdup(yytext + 1); - return ID; - } -<TOEOL>[^# \t\n]* { - BEGIN 0; - yylval.str = strdup(yytext); - return ID; - } -0[0-7]* { - yylval.val = octal(yytext); - return NUMBER; - } -0x[0-9a-fA-F]+ { - yylval.val = hex(yytext); - return NUMBER; - } --?[1-9][0-9]* { - yylval.val = atoi(yytext); - return NUMBER; - } -"?" { - yylval.val = -1; - return NUMBER; - } -\n/[ \t] { - yyline++; - } -\n { - yyline++; - return SEMICOLON; - } -#.* { /* Ignored (comment) */; } -[ \t\f]* { /* Ignored (white space) */; } -";" { return SEMICOLON; } -"," { return COMMA; } -"=" { BEGIN TOEOL; return EQUALS; } -"+=" { BEGIN TOEOL; return PLUSEQUALS; } -<<EOF>> { - int tok; - - if (inclp == NULL) - return YY_NULL; - tok = endinclude(); - if (tok != 0) - return tok; - /* otherwise continue scanning */ - } -{PATH} { - BEGIN 0; - yylval.str = strdup(yytext); - return PATH; - } -. { return yytext[0]; } - -%% -/* - * kw_lookup - * Look up a string in the keyword table. Returns a -1 if the - * string is not a keyword otherwise it returns the keyword number - */ - -int -kw_lookup(char *word) -{ - struct kt *kp; - - for (kp = key_words; kp->kt_name != 0; kp++) - if (eq(word, kp->kt_name)) - return kp->kt_val; - return -1; -} - -/* - * Number conversion routines - */ - -unsigned int -octal(const char *str) -{ - unsigned int num; - - (void) sscanf(str, "%o", &num); - return num; -} - -unsigned int -hex(const char *str) -{ - unsigned int num; - - (void) sscanf(str+2, "%x", &num); - return num; -} - -void -cfgfile_add(const char *fname) -{ - struct cfgfile *cf; - - cf = calloc(1, sizeof(*cf)); - if (cf == NULL) - err(EXIT_FAILURE, "calloc"); - assert(cf != NULL); - asprintf(&cf->cfg_path, "%s", fname); - STAILQ_INSERT_TAIL(&cfgfiles, cf, cfg_next); -} - -void -cfgfile_removeall(void) -{ - struct cfgfile *cf; - - while (!STAILQ_EMPTY(&cfgfiles)) { - cf = STAILQ_FIRST(&cfgfiles); - STAILQ_REMOVE_HEAD(&cfgfiles, cfg_next); - if (cf->cfg_path != NULL) - free(cf->cfg_path); - free(cf); - } -} - -/* - * Open the named file for inclusion at the current point. Returns 0 on - * success (file opened and previous state pushed), nonzero on failure - * (fopen failed, complaint made). The `ateof' parameter controls the - * token to be inserted at the end of the include file. If ateof == 0, - * then nothing is inserted. - */ -int -include(const char *fname, int ateof) -{ - FILE *fp; - struct incl *in; - char *fnamebuf; - - fnamebuf = NULL; - fp = fopen(fname, "r"); - if (fp == NULL && fname[0] != '.' && fname[0] != '/') { - asprintf(&fnamebuf, "../../conf/%s", fname); - if (fnamebuf != NULL) { - fp = fopen(fnamebuf, "r"); - free(fnamebuf); - } - } - if (fp == NULL) { - yyerror("cannot open included file"); - return (-1); - } - cfgfile_add(fnamebuf == NULL ? fname : fnamebuf); - in = malloc(sizeof(*in)); - assert(in != NULL); - in->in_prev = inclp; - in->in_buf = YY_CURRENT_BUFFER; - in->in_fname = yyfile; - in->in_lineno = yyline; - in->in_ateof = ateof; - inclp = in; - yy_switch_to_buffer(yy_create_buffer(fp, YY_BUF_SIZE)); - yyfile = fname; - yyline = 0; - return (0); -} - -/* - * Terminate the most recent inclusion. - */ -static int -endinclude(void) -{ - struct incl *in; - int ateof; - - in = inclp; - assert(in != NULL); - inclp = in->in_prev; - lastfile = yyfile; - yy_delete_buffer(YY_CURRENT_BUFFER); - (void)fclose(yyin); - yy_switch_to_buffer(in->in_buf); - yyfile = in->in_fname; - yyline = in->in_lineno; - ateof = in->in_ateof; - free(in); - - return (ateof); -} |
