guc-file.c

PostgreSQL 8.1.4的源码 适用于Linux下的开源数据库系统

/* A lexical scanner generated by flex */

/* Scanner skeleton version:
 * $Header: /home/daffy/u0/vern/flex/RCS/flex.skl,v 2.91 96/09/10 16:58:48 vern Exp $
 * $FreeBSD: src/usr.bin/lex/flex.skl,v 1.8 2004/01/06 19:03:44 nectar Exp $
 */

#define FLEX_SCANNER
#define YY_FLEX_MAJOR_VERSION 2
#define YY_FLEX_MINOR_VERSION 5

#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>
#include <unistd.h>

/* Use prototypes in function declarations. */
#define YY_USE_PROTOS

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

#else	/* ! __cplusplus */

#if __STDC__

#define YY_USE_PROTOS
#define YY_USE_CONST

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

#ifdef __TURBOC__
 #pragma warn -rch
 #pragma warn -use
#include <io.h>
#include <stdlib.h>
#define YY_USE_CONST
#define YY_USE_PROTOS
#endif

#ifdef YY_USE_CONST
#define GUC_yyconst const
#else
#define GUC_yyconst
#endif


#ifdef YY_USE_PROTOS
#define YY_PROTO(proto) proto
#else
#define YY_PROTO(proto) ()
#endif

/* Returned upon end-of-file. */
#define YY_NULL 0

/* Promotes a possibly negative, possibly signed char to an unsigned
 * integer for use as an array index.  If the signed char is negative,
 * we want to instead treat it as an 8-bit unsigned char, hence the
 * double cast.
 */
#define YY_SC_TO_UI(c) ((unsigned int) (unsigned char) c)

/* 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 GUC_yy_start = 1 + 2 *

/* Translate the current start state into a value that can be later handed
 * to BEGIN to return to the state.  The YYSTATE alias is for lex
 * compatibility.
 */
#define YY_START ((GUC_yy_start - 1) / 2)
#define YYSTATE YY_START

/* 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 GUC_yyrestart( GUC_yyin )

#define YY_END_OF_BUFFER_CHAR 0

/* Size of default input buffer. */
#define YY_BUF_SIZE 16384

typedef struct GUC_yy_buffer_state *YY_BUFFER_STATE;

extern int GUC_yyleng;
extern FILE *GUC_yyin, *GUC_yyout;

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

/* The funky do-while in the following #define is used to turn the definition
 * int a single C statement (which needs a semi-colon terminator).  This
 * avoids problems with code like:
 *
 * 	if ( condition_holds )
 *		GUC_yyless( 5 );
 *	else
 *		do_something_else();
 *
 * 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 GUC_yyless() call.
 */

/* Return all but the first 'n' matched characters back to the input stream. */

#define GUC_yyless(n) \
	do \
		{ \
		/* Undo effects of setting up GUC_yytext. */ \
		*GUC_yy_cp = GUC_yy_hold_char; \
		YY_RESTORE_YY_MORE_OFFSET \
		GUC_yy_c_buf_p = GUC_yy_cp = GUC_yy_bp + n - YY_MORE_ADJ; \
		YY_DO_BEFORE_ACTION; /* set up GUC_yytext again */ \
		} \
	while ( 0 )

#define unput(c) GUC_yyunput( c, GUC_yytext_ptr )

/* The following is because we cannot portably get our hands on size_t
 * (without autoconf's help, which isn't available because we want
 * flex-generated scanners to compile on their own).
 */
typedef unsigned int GUC_yy_size_t;


struct GUC_yy_buffer_state
	{
	FILE *GUC_yy_input_file;

	char *GUC_yy_ch_buf;		/* input buffer */
	char *GUC_yy_buf_pos;		/* current position in input buffer */

	/* Size of input buffer in bytes, not including room for EOB
	 * characters.
	 */
	GUC_yy_size_t GUC_yy_buf_size;

	/* Number of characters read into GUC_yy_ch_buf, not including EOB
	 * characters.
	 */
	int GUC_yy_n_chars;

	/* Whether we "own" the buffer - i.e., we know we created it,
	 * and can realloc() it to grow it, and should free() it to
	 * delete it.
	 */
	int GUC_yy_is_our_buffer;

	/* Whether this is an "interactive" input source; if so, and
	 * if we're using stdio for input, then we want to use getc()
	 * instead of fread(), to make sure we stop fetching input after
	 * each newline.
	 */
	int GUC_yy_is_interactive;

	/* Whether we're considered to be at the beginning of a line.
	 * If so, '^' rules will be active on the next match, otherwise
	 * not.
	 */
	int GUC_yy_at_bol;

	/* Whether to try to fill the input buffer when we reach the
	 * end of it.
	 */
	int GUC_yy_fill_buffer;

	int GUC_yy_buffer_status;
#define YY_BUFFER_NEW 0
#define YY_BUFFER_NORMAL 1
	/* When an EOF's been seen but there's still some text to process
	 * then we mark the buffer as YY_EOF_PENDING, to indicate that we
	 * shouldn't try reading from the input source any more.  We might
	 * still have a bunch of tokens to match, though, because of
	 * possible backing-up.
	 *
	 * When we actually see the EOF, we change the status to "new"
	 * (via GUC_yyrestart()), so that the user can continue scanning by
	 * just pointing GUC_yyin at a new input file.
	 */
#define YY_BUFFER_EOF_PENDING 2
	};

static YY_BUFFER_STATE GUC_yy_current_buffer = 0;

/* 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 GUC_yy_current_buffer


/* GUC_yy_hold_char holds the character lost when GUC_yytext is formed. */
static char GUC_yy_hold_char;

static int GUC_yy_n_chars;		/* number of characters read into GUC_yy_ch_buf */


int GUC_yyleng;

/* Points to current character in buffer. */
static char *GUC_yy_c_buf_p = (char *) 0;
static int GUC_yy_init = 1;		/* whether we need to initialize */
static int GUC_yy_start = 0;	/* start state number */

/* Flag which is used to allow GUC_yywrap()'s to do buffer switches
 * instead of setting up a fresh GUC_yyin.  A bit of a hack ...
 */
static int GUC_yy_did_buffer_switch_on_eof;

void GUC_yyrestart YY_PROTO(( FILE *input_file ));

void GUC_yy_switch_to_buffer YY_PROTO(( YY_BUFFER_STATE new_buffer ));
void GUC_yy_load_buffer_state YY_PROTO(( void ));
YY_BUFFER_STATE GUC_yy_create_buffer YY_PROTO(( FILE *file, int size ));
void GUC_yy_delete_buffer YY_PROTO(( YY_BUFFER_STATE b ));
void GUC_yy_init_buffer YY_PROTO(( YY_BUFFER_STATE b, FILE *file ));
void GUC_yy_flush_buffer YY_PROTO(( YY_BUFFER_STATE b ));
#define YY_FLUSH_BUFFER GUC_yy_flush_buffer( GUC_yy_current_buffer )

YY_BUFFER_STATE GUC_yy_scan_buffer YY_PROTO(( char *base, GUC_yy_size_t size ));
YY_BUFFER_STATE GUC_yy_scan_string YY_PROTO(( GUC_yyconst char *GUC_yy_str ));
YY_BUFFER_STATE GUC_yy_scan_bytes YY_PROTO(( GUC_yyconst char *bytes, int len ));

static void *GUC_yy_flex_alloc YY_PROTO(( GUC_yy_size_t ));
static void *GUC_yy_flex_realloc YY_PROTO(( void *, GUC_yy_size_t ));
static void GUC_yy_flex_free YY_PROTO(( void * ));

#define GUC_yy_new_buffer GUC_yy_create_buffer

#define GUC_yy_set_interactive(is_interactive) \
	{ \
	if ( ! GUC_yy_current_buffer ) \
		GUC_yy_current_buffer = GUC_yy_create_buffer( GUC_yyin, YY_BUF_SIZE ); \
	GUC_yy_current_buffer->GUC_yy_is_interactive = is_interactive; \
	}

#define GUC_yy_set_bol(at_bol) \
	{ \
	if ( ! GUC_yy_current_buffer ) \
		GUC_yy_current_buffer = GUC_yy_create_buffer( GUC_yyin, YY_BUF_SIZE ); \
	GUC_yy_current_buffer->GUC_yy_at_bol = at_bol; \
	}

#define YY_AT_BOL() (GUC_yy_current_buffer->GUC_yy_at_bol)


#define GUC_yywrap() 1
#define YY_SKIP_YYWRAP
typedef unsigned char YY_CHAR;
FILE *GUC_yyin = (FILE *) 0, *GUC_yyout = (FILE *) 0;
typedef int GUC_yy_state_type;
extern char *GUC_yytext;
#define GUC_yytext_ptr GUC_yytext

static GUC_yy_state_type GUC_yy_get_previous_state YY_PROTO(( void ));
static GUC_yy_state_type GUC_yy_try_NUL_trans YY_PROTO(( GUC_yy_state_type current_state ));
static int GUC_yy_get_next_buffer YY_PROTO(( void ));
static void GUC_yy_fatal_error YY_PROTO(( GUC_yyconst char msg[] ));

/* Done after the current pattern has been matched and before the
 * corresponding action - sets up GUC_yytext.
 */
#define YY_DO_BEFORE_ACTION \
	GUC_yytext_ptr = GUC_yy_bp; \
	GUC_yyleng = (int) (GUC_yy_cp - GUC_yy_bp); \
	GUC_yy_hold_char = *GUC_yy_cp; \
	*GUC_yy_cp = '\0'; \
	GUC_yy_c_buf_p = GUC_yy_cp;

#define YY_NUM_RULES 12
#define YY_END_OF_BUFFER 13
static GUC_yyconst short int GUC_yy_accept[39] =
    {   0,
        0,    0,   13,   11,    2,    1,    3,   11,   11,    9,
        8,    8,   10,    4,    2,    3,    0,    6,    0,    9,
        8,    8,    9,    0,    0,    7,    7,    4,    4,    0,
        9,    8,    7,    5,    5,    5,    5,    0
    } ;

static GUC_yyconst int GUC_yy_ec[256] =
    {   0,
        1,    1,    1,    1,    1,    1,    1,    1,    2,    3,
        1,    1,    2,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    2,    1,    1,    4,    1,    1,    1,    5,    1,
        1,    1,    6,    1,    7,    8,    9,   10,   11,   11,
       11,   11,   11,   11,   11,   11,   11,    9,    1,    1,
       12,    1,    1,    1,   13,   13,   13,   13,   14,   13,
       15,   15,   15,   15,   15,   15,   15,   15,   15,   15,
       15,   15,   15,   15,   15,   15,   15,   15,   15,   15,
        1,   16,    1,    1,   17,    1,   13,   13,   13,   13,

       14,   13,   15,   15,   15,   15,   15,   15,   15,   15,
       15,   15,   15,   15,   15,   15,   15,   15,   15,   18,
       15,   15,    1,    1,    1,    1,    1,   15,   15,   15,
       15,   15,   15,   15,   15,   15,   15,   15,   15,   15,
       15,   15,   15,   15,   15,   15,   15,   15,   15,   15,
       15,   15,   15,   15,   15,   15,   15,   15,   15,   15,
       15,   15,   15,   15,   15,   15,   15,   15,   15,   15,
       15,   15,   15,   15,   15,   15,   15,   15,   15,   15,
       15,   15,   15,   15,   15,   15,   15,   15,   15,   15,
       15,   15,   15,   15,   15,   15,   15,   15,   15,   15,

       15,   15,   15,   15,   15,   15,   15,   15,   15,   15,
       15,   15,   15,   15,   15,   15,   15,   15,   15,   15,
       15,   15,   15,   15,   15,   15,   15,   15,   15,   15,
       15,   15,   15,   15,   15,   15,   15,   15,   15,   15,
       15,   15,   15,   15,   15,   15,   15,   15,   15,   15,
       15,   15,   15,   15,   15
    } ;

static GUC_yyconst int GUC_yy_meta[19] =
    {   0,
        1,    1,    2,    1,    1,    1,    3,    3,    3,    4,
        4,    1,    5,    4,    3,    1,    3,    3
    } ;

static GUC_yyconst short int GUC_yy_base[46] =
    {   0,
        0,    0,   44,  112,   41,  112,    0,   14,   23,   28,
       10,   31,  112,   28,   38,    0,   16,   34,    0,   24,
        0,    0,    0,   40,    0,   12,   39,   51,    0,   12,
       14,    0,   10,   62,   73,    0,    0,  112,   90,   95,
       22,   98,  100,  103,  106
    } ;

static GUC_yyconst short int GUC_yy_def[46] =
    {   0,
       38,    1,   38,   38,   38,   38,   39,   40,   38,   41,
        9,    9,   38,   42,   38,   39,   40,   38,   40,   41,
       11,   12,   20,   38,   43,   44,   44,   42,   28,   38,
       38,   43,   44,   45,   45,   35,   35,    0,   38,   38,
       38,   38,   38,   38,   38
    } ;

static GUC_yyconst short int GUC_yy_nxt[131] =
    {   0,
        4,    5,    6,    7,    8,    9,    9,   10,    4,   11,
       12,   13,   14,   14,   14,    4,   14,   14,   18,   22,
       18,   31,   31,   31,   31,   23,   33,   25,   33,   19,
       20,   19,   21,   22,   26,   27,   26,   24,   17,   15,
       22,   24,   15,   38,   29,   30,   30,   38,   38,   31,
       31,   34,   34,   34,   38,   35,   34,   26,   27,   26,
       38,   38,   38,   38,   38,   38,   38,   29,   26,   26,
       26,   38,   38,   38,   38,   38,   38,   38,   37,   26,
       26,   26,   38,   38,   38,   38,   38,   38,   38,   37,
       16,   38,   16,   16,   16,   17,   38,   17,   17,   17,

       28,   28,   28,   32,   32,   26,   26,   26,   36,   36,
       36,    3,   38,   38,   38,   38,   38,   38,   38,   38,
       38,   38,   38,   38,   38,   38,   38,   38,   38,   38
    } ;

static GUC_yyconst short int GUC_yy_chk[131] =
    {   0,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    8,   11,
       17,   30,   30,   31,   31,   41,   33,   11,   26,    8,
        9,   17,    9,    9,   14,   14,   14,   20,   18,   15,
       12,   10,    5,    3,   14,   24,   24,    0,    0,   24,
       24,   27,   27,   27,    0,   27,   27,   28,   28,   28,
        0,    0,    0,    0,    0,    0,    0,   28,   34,   34,
       34,    0,    0,    0,    0,    0,    0,    0,   34,   35,
       35,   35,    0,    0,    0,    0,    0,    0,    0,   35,
       39,    0,   39,   39,   39,   40,    0,   40,   40,   40,

       42,   42,   42,   43,   43,   44,   44,   44,   45,   45,
       45,   38,   38,   38,   38,   38,   38,   38,   38,   38,
       38,   38,   38,   38,   38,   38,   38,   38,   38,   38
    } ;

static GUC_yy_state_type GUC_yy_last_accepting_state;
static char *GUC_yy_last_accepting_cpos;

/* The intent behind this definition is that it'll catch
 * any uses of REJECT which flex missed.
 */
#define REJECT reject_used_but_not_detected
#define GUC_yymore() GUC_yymore_used_but_not_detected
#define YY_MORE_ADJ 0
#define YY_RESTORE_YY_MORE_OFFSET
char *GUC_yytext;
#line 1 "guc-file.l"
#define INITIAL 0
/* -*-pgsql-c-*- */
/*
 * Scanner for the configuration file
 *
 * Copyright (c) 2000-2005, PostgreSQL Global Development Group
 *
 * $PostgreSQL: pgsql/src/backend/utils/misc/guc-file.l,v 1.32.2.2 2006/01/02 19:55:31 tgl Exp $
 */
#line 11 "guc-file.l"

#include "postgres.h"

#include <unistd.h>
#include <ctype.h>

#include "miscadmin.h"
#include "storage/fd.h"
#include "utils/guc.h"

/* Avoid exit() on fatal scanner errors (a bit ugly -- see GUC_yy_fatal_error) */
#undef fprintf
#define fprintf(file, fmt, msg)  ereport(ERROR, (errmsg_internal("%s", msg)))

static unsigned ConfigFileLineno;

enum {
	GUC_ID = 1,
	GUC_STRING = 2,
	GUC_INTEGER = 3,
	GUC_REAL = 4,
	GUC_EQUALS = 5,
	GUC_UNQUOTED_STRING = 6,
	GUC_QUALIFIED_ID = 7,
	GUC_EOL = 99,
	GUC_ERROR = 100
};

/* prototype, so compiler is happy with our high warnings setting */
int GUC_yylex(void);
static char *GUC_scanstr(const char *s);
#define YY_NEVER_INTERACTIVE 1
#define YY_NO_UNPUT 1
#line 447 "lex.GUC_yy.c"

/* Macros after this point can all be overridden by user definitions in
 * section 1.
 */

#ifndef YY_SKIP_YYWRAP
#ifdef __cplusplus
extern "C" int GUC_yywrap YY_PROTO(( void ));
#else
extern int GUC_yywrap YY_PROTO(( void ));
#endif
#endif

#ifndef YY_NO_UNPUT
static void GUC_yyunput YY_PROTO(( int c, char *buf_ptr ));
#endif

#ifndef GUC_yytext_ptr
static void GUC_yy_flex_strncpy YY_PROTO(( char *, GUC_yyconst char *, int ));
#endif

#ifdef YY_NEED_STRLEN
static int GUC_yy_flex_strlen YY_PROTO(( GUC_yyconst char * ));
#endif

#ifndef YY_NO_INPUT
#ifdef __cplusplus
static int GUC_yyinput YY_PROTO(( void ));
#else
static int input YY_PROTO(( void ));
#endif
#endif