yylex.c

一个可用的dns服务器源代码

/* A lexical scanner generated by flex */

/* scanner skeleton version:
 * $Header: /home/horse/u0/vern/flex/RCS/flex.skel,v 2.16 90/08/03 14:09:36 vern Exp Locker: vern $
 */

#define FLEX_SCANNER

#include <stdio.h>

/* cfront 1.2 defines "c_plusplus" instead of "__cplusplus" */
#ifdef c_plusplus
#ifndef __cplusplus
#define __cplusplus
#endif
#endif


#ifdef __cplusplus

#include <stdlib.h>

/* use prototypes in function declarations */
#define YY_USE_PROTOS

/* the "const" storage-class-modifier is valid */
#define YY_USE_CONST

#else	/* ! __cplusplus */

#ifdef __STDC__

#ifdef __GNUC__
#include <stddef.h>
void *malloc( size_t );
void free( void* );
#else
#include <stdlib.h>
#endif	/* __GNUC__ */

#define YY_USE_PROTOS
#define YY_USE_CONST

#endif	/* __STDC__ */
#endif	/* ! __cplusplus */


#ifdef __TURBOC__
#define YY_USE_CONST
#endif


/* #ifndef YY_USE_CONST
#define const
#endif
*/

#ifdef YY_USE_PROTOS
#define YY_PROTO(proto) proto
#else
#define YY_PROTO(proto) ()
/* we can't get here if it's an ANSI C compiler, or a C++ compiler,
 * so it's got to be a K&R compiler, and therefore there's no standard
 * place from which to include these definitions
 */
#ifndef WINNT
char *malloc();
int free();
#endif
//int read();
#endif


/* amount of stuff to slurp up with each read */
#ifndef YY_READ_BUF_SIZE
#define YY_READ_BUF_SIZE 8192
#endif

/* returned upon end-of-file */
#define YY_END_TOK 0

/* copy whatever the last rule matched to the standard output */

/* cast to (char *) is because for 8-bit chars, yytext is (unsigned char *) */
/* this used to be an fputs(), but since the string might contain NUL's,
 * we now use fwrite()
 */
#define ECHO (void) fwrite( (char *) yytext, yyleng, 1, yyout )

/* gets input and stuffs it into "buf".  number of characters read, or YY_NULL,
 * is returned in "result".
 */
#define YY_INPUT(buf,result,max_size) \
	if ( (result = read( fileno(yyin), (char *) buf, max_size )) < 0 ) \
	    YY_FATAL_ERROR( "read() in flex scanner failed" );
#define YY_NULL 0

/* no semi-colon after return; correct usage is to write "yyterminate();" -
 * we don't want an extra ';' after the "return" because that will cause
 * some compilers to complain about unreachable statements.
 */
#define yyterminate() return ( YY_NULL )

/* report a fatal error */

/* The funky do-while is used to turn this macro definition into
 * a single C statement (which needs a semi-colon terminator).
 * This avoids problems with code like:
 *
 * 	if ( something_happens )
 *		YY_FATAL_ERROR( "oops, the something happened" );
 *	else
 *		everything_okay();
 *
 * Prior to using the do-while the compiler would get upset at the
 * "else" because it interpreted the "if" statement as being all
 * done when it reached the ';' after the YY_FATAL_ERROR() call.
 */

#define YY_FATAL_ERROR(msg) \
	do \
		{ \
		(void) fputs( msg, stderr ); \
		(void) putc( '\n', stderr ); \
		exit( 1 ); \
		} \
	while ( 0 )

/* default yywrap function - always treat EOF as an EOF */
#define yywrap() 1

/* enter a start condition.  This macro really ought to take a parameter,
 * but we do it the disgusting crufty way forced on us by the ()-less
 * definition of BEGIN
 */
#define BEGIN yy_start = 1 + 2 *

/* action number for EOF rule of a given start state */
#define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1)

/* special action meaning "start processing a new file" */
#define YY_NEW_FILE \
	do \
		{ \
		yy_init_buffer( yy_current_buffer, yyin ); \
		yy_load_buffer_state(); \
		} \
	while ( 0 )

/* default declaration of generated scanner - a define so the user can
 * easily add parameters
 */
#define YY_DECL int yylex YY_PROTO(( void )) 

/* code executed at the end of each rule */
#define YY_BREAK break;

#define YY_END_OF_BUFFER_CHAR 0

#ifndef YY_BUF_SIZE
#define YY_BUF_SIZE (YY_READ_BUF_SIZE * 2) /* size of default input buffer */
#endif

typedef struct yy_buffer_state *YY_BUFFER_STATE;

#define YY_CHAR unsigned char
# line 1 "commands.l"
#define INITIAL 0
# line 2 "commands.l"

/*
 * ++Copyright++ 1985
 * -
 * Copyright (c) 1985
 *    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.
 * 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.
 * -
 * Portions Copyright (c) 1993 by Digital Equipment Corporation.
 * 
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies, and that
 * the name of Digital Equipment Corporation not be used in advertising or
 * publicity pertaining to distribution of the document or software without
 * specific, written prior permission.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
 * SOFTWARE.
 * -
 * --Copyright--
 */

#ifndef lint
static char sccsid[] = "@(#)commands.l	5.13 (Berkeley) 7/24/90";
#endif /* not lint */

/*
 *******************************************************************************
 *
 *  commands.l
 *
 *	Andrew Cherenson	CS298-26  Fall 1985
 *
 *	Lex input file for the nslookup program command interpreter.
 *	When a sequence is recognized, the associated action
 *	routine is called. The action routine may need to
 *	parse the string for additional information.
 *
 *  Recognized commands: (identifiers are shown in uppercase)
 *
 *	server NAME	- set default server to NAME, using default server
 *	lserver NAME	- set default server to NAME, using initial server
 *	finger [NAME]	- finger the optional NAME
 *	exit		- exit the program
 *	root		- set default server to the root
 *	ls NAME		- list the domain NAME
 *	view FILE	- sorts and view the file with more
 *	set OPTION	- set an option
 *	help		- print help information
 *	?		- print help information
 *	NAME		- print info about the host/domain NAME
 *			  using default server.
 *	NAME1 NAME2	- as above, but use NAME2 as server
 *
 *
 *   yylex Results:
 *	0		upon end-of-file.
 *	1		after each command.
 *
 *******************************************************************************
 */

#include "res.h"
extern char rootServerName[];
extern void PrintHelp();

# line 107 "commands.l"

/* done after the current pattern has been matched and before the
 * corresponding action - sets up yytext
 */
#define YY_DO_BEFORE_ACTION \
	yytext = yy_bp; \
	yyleng = yy_cp - yy_bp; \
	yy_hold_char = *yy_cp; \
	*yy_cp = '\0'; \
	yy_c_buf_p = yy_cp;

#define EOB_ACT_CONTINUE_SCAN 0
#define EOB_ACT_END_OF_FILE 1
#define EOB_ACT_LAST_MATCH 2

/* return all but the first 'n' matched characters back to the input stream */
#define yyless(n) \
	do \
		{ \
		/* undo effects of setting up yytext */ \
		*yy_cp = yy_hold_char; \
		yy_c_buf_p = yy_cp = yy_bp + n; \
		YY_DO_BEFORE_ACTION; /* set up yytext again */ \
		} \
	while ( 0 )

#define unput(c) yyunput( c, yytext )


struct yy_buffer_state
    {
    FILE *yy_input_file;

    YY_CHAR *yy_ch_buf;		/* input buffer */
    YY_CHAR *yy_buf_pos;	/* current position in input buffer */

    /* size of input buffer in bytes, not including room for EOB characters */
    int yy_buf_size;	

    /* number of characters read into yy_ch_buf, not including EOB characters */
    int yy_n_chars;

    int yy_eof_status;		/* whether we've seen an EOF on this buffer */
#define EOF_NOT_SEEN 0
    /* "pending" happens when the EOF has been seen but there's still
     * some text process
     */
#define EOF_PENDING 1
#define EOF_DONE 2
    };

static YY_BUFFER_STATE yy_current_buffer;

/* we provide macros for accessing buffer states in case in the
 * future we want to put the buffer states in a more general
 * "scanner state"
 */
#define YY_CURRENT_BUFFER yy_current_buffer


/* yy_hold_char holds the character lost when yytext is formed */
static YY_CHAR yy_hold_char;

static int yy_n_chars;		/* number of characters read into yy_ch_buf */



#ifndef YY_USER_ACTION
#define YY_USER_ACTION
#endif

#ifndef YY_USER_INIT
#define YY_USER_INIT
#endif

extern YY_CHAR *yytext;
extern int yyleng;
extern FILE *yyin, *yyout;

YY_CHAR *yytext;
int yyleng;

FILE *yyin = (FILE *) 0, *yyout = (FILE *) 0;

#define YY_END_OF_BUFFER 23
typedef int yy_state_type;
static const short int yy_acclist[223] =
    {   0,
       23,   22,   21,   22,   22,   22,   19,   20,   21,   22,
       22,16400,   22,16398,   22,16400,   22,16400,   22,16400,
       22,16400,   22,16400,   22,16400,   22,16400,   20,   19,
       20,16400,16398,16400,16400,16400,16400,16400,16400,16400,
    16400, 8208,   20,16400,16398, 8206,   20,16400,16400,16400,
    16400,16400,16400,16400,16402,16400,16400,16400,16400,16400,
    16400,16400,16400,16400,16402, 8210,   20,16402,16399,16387,
    16400,16400,16397,16400,16393,16402,16400,16388,16400,16400,
    16400,16400,16399, 8207,   20,16387,16400, 8195, 8208,   20,
    16400,16397,16400, 8205, 8208,   20,16393,16402, 8201, 8210,

       20,16393,16402,16400,16388,16400, 8196, 8208,   20,16400,
    16396,16402,16396,16400,16401,16390,16400,16400,16400,16396,
    16402, 8204, 8210,   20,16396,16402,16396, 8204,   20,16391,
    16402,16391,16401, 8209,   20,16390,16400, 8198, 8208,   20,
    16393,16395,16400,16400,16391,16402, 8199, 8210,   20,16391,
    16402,16391, 8199,   20,16390,16402,16392,16401,16393, 8201,
       20,16393,16395, 8203,   20,16395,16400,16385,16402,16390,
    16402, 8198, 8210,   20,16390,16402,16389,16399,16392,16401,
     8200, 8209,   20,16395,16386,16402,16385,16402, 8193, 8210,
       20,16385,16402,16389,16399, 8197, 8207,   20,16395,16395,

    16386,16402, 8194, 8210,   20,16386,16402,16389,16401,16392,
    16394,16389,16401, 8197, 8209,   20,16392, 8200,   20,16394,
     8202,   20
    } ;

static const short int yy_accept[172] =
    {   0,
        1,    1,    1,    2,    3,    5,    6,    7,   11,   13,
       15,   17,   19,   21,   23,   25,   27,   29,   29,   30,
       30,   32,   33,   34,   35,   36,   37,   38,   39,   40,
       41,   42,   44,   45,   46,   48,   49,   50,   51,   52,
       53,   54,   55,   56,   56,   57,   58,   59,   60,   61,
       62,   63,   64,   65,   66,   68,   69,   69,   70,   70,
       72,   73,   75,   77,   77,   78,   80,   81,   82,   83,
       83,   84,   86,   88,   91,   92,   94,   97,   99,  102,
      104,  104,  104,  105,  107,  110,  111,  113,  114,  115,
      115,  116,  116,  118,  118,  118,  118,  119,  120,  122,

      125,  127,  128,  130,  132,  133,  134,  136,  138,  141,
      141,  141,  142,  143,  144,  145,  147,  150,  152,  153,
      155,  157,  157,  159,  160,  162,  163,  164,  166,  167,
      168,  170,  172,  175,  177,  177,  179,  179,  181,  184,
      184,  185,  185,  187,  189,  192,  194,  194,  196,  199,
      199,  199,  200,  201,  201,  201,  203,  206,  208,  208,
      210,  210,  211,  212,  214,  217,  218,  220,  221,  223,
      223
    } ;

static const YY_CHAR yy_ec[256] =
    {   0,
        1,    1,    1,    1,    1,    1,    1,    1,    2,    3,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    2,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    4,    1,    1,    5,    4,    6,    4,    4,    4,
        4,    4,    4,    4,    4,    4,    4,    1,    1,    1,
        6,    7,    8,    1,   10,    4,    4,   11,   12,   13,
       14,   15,   16,    4,    4,   17,   18,   19,   20,   21,
        4,   22,   23,   24,    4,   25,   26,   27,    4,    4,
        1,    9,    1,    1,    6,    1,   10,    4,    4,   11,

       12,   13,   14,   15,   16,    4,    4,   17,   18,   19,
       20,   21,    4,   22,   23,   24,    4,   25,   26,   27,
        4,    4,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,

        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1
    } ;

static const YY_CHAR yy_meta[28] =
    {   0,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1
    } ;

static const short int yy_base[203] =
    {   0,
      491,    0,  493,  611,  611,  489,   27,  611,   54,   56,
       63,   51,   48,   46,   54,   56,   60,  479,  611,    0,
      611,  446,   77,    0,   61,   70,   62,   64,   74,   76,
      103,  611,  439,   91,  611,   80,   94,   97,  113,   75,
       95,  104,  140,  149,   96,  112,  106,  158,  107,  108,
       73,  126,  110,  166,  611,  173,  182,  142,    0,  152,
      150,  168,  195,  202,  161,  191,  160,  226,  197,  235,
      198,  611,  244,  611,  184,  205,  611,  207,  611,  253,
      213,  219,  236,  237,  611,  237,  264,  273,  282,  291,
      255,    0,  275,  294,  302,  311,  299,  268,  320,  611,

      327,  266,  611,  336,  345,  322,  611,  354,  611,  363,
      463,  372,  381,  304,  390,  398,  611,  405,  330,  611,
      414,  423,  432,  435,  611,  442,  451,  611,  460,  469,
      478,  481,  611,  488,  497,  338,    0,  347,  611,  500,
      507,  510,  517,  520,  611,  527,  536,  365,  611,  545,
      374,  548,  555,  564,  383,  567,  611,  574,  583,  400,
        0,  592,  601,  407,  611,  416,  611,  425,  611,  611,
      463,  454,  447,  446,  445,  435,  428,  419,  410,  403,
      393,  386,  377,  368,  357,  350,  341,  314,  296,  285,
      278,  240,  229,  222,  218,  191,  177,  145,  137,  129,

      117,   98
    } ;

static const short int yy_def[203] =
    {   0,
      171,  170,  170,  170,  170,  172,  170,  170,  173,  172,
      173,   11,   11,   11,   11,   11,   11,  172,  170,    7,
      170,   11,  172,   11,   11,   11,   11,   11,   11,   11,
      174,  170,   11,  172,  170,   11,   11,   11,   11,   11,
       11,   11,  175,  176,   11,   11,   11,  177,   11,   11,
       11,   11,   11,  172,  170,  175,  176,   57,   57,   11,
       11,   11,  178,  172,   11,   11,   11,  179,   11,  180,
      172,  170,  174,  170,   11,   73,  170,  172,  170,  178,
      172,  172,   11,   73,  170,   11,  181,  182,  183,  180,
       90,   90,   11,   90,  184,  185,   11,   11,  172,  170,

      181,  172,  170,  186,  187,  172,  170,  188,  170,  189,
       90,  190,  191,   11,  192,  172,  170,  186,  172,  170,
      193,  194,  189,  172,  170,  190,  195,  170,  191,  196,
      197,  172,  170,  193,  194,  135,  135,  172,  170,  172,
      198,  172,  199,  172,  170,  197,  200,  172,  170,  201,
      172,  172,  198,  202,  172,  172,  170,  199,  200,  159,
      159,  201,  202,  172,  170,  172,  170,  172,  170,    0,
      170,  170,  170,  170,  170,  170,  170,  170,  170,  170,
      170,  170,  170,  170,  170,  170,  170,  170,  170,  170,
      170,  170,  170,  170,  170,  170,  170,  170,  170,  170,

      170,  170
    } ;

static const short int yy_nxt[639] =
    {   0,
        6,    7,    8,    9,    6,    6,    6,   10,    9,    9,
        9,   11,   12,    9,   13,    9,   14,    9,    9,    9,
        9,   15,   16,    9,   17,    9,    9,   18,   20,   21,
       22,   18,   18,   18,   23,   22,   22,   22,   24,   25,