slp_attr_l.c

SLP协议在linux下的实现。此版本为1.2.1版。官方网站为www.openslp.org

#define yyparse         slp_attr_parse
#define yylex           slp_attr_lex
#define yyerror         slp_attr_error
#define yylval          slp_attr_lval
#define yychar          slp_attr_char
#define yydebug         slp_attr_debug
#define yypact          slp_attr_pact  
#define yyr1            slp_attr_r1                    
#define yyr2            slp_attr_r2                    
#define yydef           slp_attr_def           
#define yychk           slp_attr_chk           
#define yypgo           slp_attr_pgo           
#define yyact           slp_attr_act           
#define yyexca          slp_attr_exca
#define yyerrflag       slp_attr_errflag
#define yynerrs         slp_attr_nerrs
#define yyps            slp_attr_ps
#define yypv            slp_attr_pv
#define yys             slp_attr_s
#define yy_yys          slp_attr_yys
#define yystate         slp_attr_state
#define yytmp           slp_attr_tmp
#define yyv             slp_attr_v
#define yy_yyv          slp_attr_yyv
#define yyval           slp_attr_val
#define yylloc          slp_attr_lloc
#define yyreds          slp_attr_reds
#define yytoks          slp_attr_toks
#define yylhs           slp_attr_yylhs
#define yylen           slp_attr_yylen
#define yydefred        slp_attr_yydefred
#define yydgoto         slp_attr_yydgoto
#define yysindex        slp_attr_yysindex
#define yyrindex        slp_attr_yyrindex
#define yygindex        slp_attr_yygindex
#define yytable         slp_attr_yytable
#define yycheck         slp_attr_yycheck
#define yyname          slp_attr_yyname
#define yyrule          slp_attr_yyrule
#define YY_NO_UNPUT

#include "slp_attr.h"
#include "slp_attr_y.h"
#include "slp_xmalloc.h"

static char buf[2052];

void slp_attr_error(char *, ...);

int slp_attr_wrap(void);

int slp_attr_lex(void);

void slp_attr_close_lexer(unsigned int handle);

unsigned int slp_attr_init_lexer(char *s);


/* {}	*/
/* 
this lexer cycles through three states. in the initial state, 
it is looking strictly for attribute tags. If, in the initial 
state it finds a '(' it anticipates an attribute-value pair 
and changes to ATTRIBUTE state .
in the ATTRIBUTE state is is looking for either a closing ')'
or a '='. If it sees a closing ')' it changes to the initial state. 
if it sees an '=' it changes to the VALUE state and looks for 
the attribute value. After seeing the attribute value, it looks
for a either a ')' or a ','. If it sees a ')' it closes the attribute
and returns to the initial state. 
if, during the VALUE state the lexer sees a ',' it decides it is 
looking at a multi-valued attribute and returns a special _MULTIVAL
token to the parser. The parser uses this to construct additional
attribute-value pairs for each value in the multi-val statement. 
*/ 
#define ATTR 1

#define VALUE 2

#line 537 "slp_attr_l.c"

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

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

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

#ifndef yytext_ptr
static void yy_flex_strncpy YY_PROTO(( char *, yyconst char *, int ));
#endif

#ifdef YY_NEED_STRLEN
static int yy_flex_strlen YY_PROTO(( yyconst char * ));
#endif

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

#if YY_STACK_USED
static int yy_start_stack_ptr = 0;
static int yy_start_stack_depth = 0;
static int *yy_start_stack = 0;
#ifndef YY_NO_PUSH_STATE
static void yy_push_state YY_PROTO(( int new_state ));
#endif
#ifndef YY_NO_POP_STATE
static void yy_pop_state YY_PROTO(( void ));
#endif
#ifndef YY_NO_TOP_STATE
static int yy_top_state YY_PROTO(( void ));
#endif

#else
#define YY_NO_PUSH_STATE 1
#define YY_NO_POP_STATE 1
#define YY_NO_TOP_STATE 1
#endif

#ifdef YY_MALLOC_DECL
YY_MALLOC_DECL
#else
#if __STDC__
#ifndef __cplusplus
#include <stdlib.h>
#endif
#else
/* Just try to get by without declaring the routines.  This will fail
 * miserably on non-ANSI systems for which sizeof(size_t) != sizeof(int)
 * or sizeof(void*) != sizeof(int).
 */
#endif
#endif

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

/* Copy whatever the last rule matched to the standard output. */

#ifndef ECHO
/* This used to be an fputs(), but since the string might contain NUL's,
 * we now use fwrite().
 */
#define ECHO (void) fwrite( yytext, yyleng, 1, yyout )
#endif

/* Gets input and stuffs it into "buf".  number of characters read, or YY_NULL,
 * is returned in "result".
 */
#ifndef YY_INPUT
#define YY_INPUT(buf,result,max_size) \
	if ( yy_current_buffer->yy_is_interactive ) \
		{ \
		int c = '*', n; \
		for ( n = 0; n < max_size && \
			     (c = getc( yyin )) != EOF && c != '\n'; ++n ) \
			buf[n] = (char) c; \
		if ( c == '\n' ) \
			buf[n++] = (char) c; \
		if ( c == EOF && ferror( yyin ) ) \
			YY_FATAL_ERROR( "input in flex scanner failed" ); \
		result = n; \
		} \
	else if ( ((result = fread( buf, 1, max_size, yyin )) == 0) \
		  && ferror( yyin ) ) \
		YY_FATAL_ERROR( "input in flex scanner failed" );
#endif

/* 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.
 */
#ifndef yyterminate
#define yyterminate() return YY_NULL
#endif

/* Number of entries by which start-condition stack grows. */
#ifndef YY_START_STACK_INCR
#define YY_START_STACK_INCR 25
#endif

/* Report a fatal error. */
#ifndef YY_FATAL_ERROR
#define YY_FATAL_ERROR(msg) yy_fatal_error( msg )
#endif

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

/* Code executed at the beginning of each rule, after yytext and yyleng
 * have been set up.
 */
#ifndef YY_USER_ACTION
#define YY_USER_ACTION
#endif

/* Code executed at the end of each rule. */
#ifndef YY_BREAK
#define YY_BREAK break;
#endif

#define YY_RULE_SETUP \
	YY_USER_ACTION

YY_DECL
	{
	register yy_state_type yy_current_state;
	register char *yy_cp, *yy_bp;
	register int yy_act;

#line 123 "slp_attr_l.l"


#line 691 "slp_attr_l.c"

	if ( yy_init )
		{
		yy_init = 0;

#ifdef YY_USER_INIT
		YY_USER_INIT;
#endif

		if ( ! yy_start )
			yy_start = 1;	/* first start state */

		if ( ! yyin )
			yyin = stdin;

		if ( ! yyout )
			yyout = stdout;

		if ( ! yy_current_buffer )
			yy_current_buffer =
				yy_create_buffer( yyin, YY_BUF_SIZE );

		yy_load_buffer_state();
		}

	while ( 1 )		/* loops until end-of-file is reached */
		{
		yy_cp = yy_c_buf_p;

		/* Support of yytext. */
		*yy_cp = yy_hold_char;

		/* yy_bp points to the position in yy_ch_buf of the start of
		 * the current run.
		 */
		yy_bp = yy_cp;

		yy_current_state = yy_start;
yy_match:
		do
			{
			register YY_CHAR yy_c = yy_ec[YY_SC_TO_UI(*yy_cp)];
			if ( yy_accept[yy_current_state] )
				{
				yy_last_accepting_state = yy_current_state;
				yy_last_accepting_cpos = yy_cp;
				}
			while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
				{
				yy_current_state = (int) yy_def[yy_current_state];
				if ( yy_current_state >= 60 )
					yy_c = yy_meta[(unsigned int) yy_c];
				}
			yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
			++yy_cp;
			}
		while ( yy_base[yy_current_state] != 183 );

yy_find_action:
		yy_act = yy_accept[yy_current_state];
		if ( yy_act == 0 )
			{ /* have to back up */
			yy_cp = yy_last_accepting_cpos;
			yy_current_state = yy_last_accepting_state;
			yy_act = yy_accept[yy_current_state];
			}

		YY_DO_BEFORE_ACTION;


do_action:	/* This label is used only to access EOF actions. */


		switch ( yy_act )
	{ /* beginning of action switch */
			case 0: /* must back up */
			/* undo the effects of YY_DO_BEFORE_ACTION */
			*yy_cp = yy_hold_char;
			yy_cp = yy_last_accepting_cpos;
			yy_current_state = yy_last_accepting_state;
			goto yy_find_action;

case 1:
YY_RULE_SETUP
#line 125 "slp_attr_l.l"
{ ; }
	YY_BREAK
case 2:
YY_RULE_SETUP
#line 127 "slp_attr_l.l"
{ yylval._i = *yytext; return(yylval._i); }
	YY_BREAK
case 3:
YY_RULE_SETUP
#line 128 "slp_attr_l.l"
{ BEGIN ATTR; yylval._i = *yytext; return(yylval._i); }
	YY_BREAK
case 4:
YY_RULE_SETUP
#line 129 "slp_attr_l.l"
{   
 			   if (yyleng > 0) {
			      if(NULL != (yylval._s = xstrdup(yytext)))
                                 return(_TAG);
                              else
                                 return(0L);
                           }
                        }
	YY_BREAK
/* anything else in the initial state is an error */
case 5:
YY_RULE_SETUP
#line 139 "slp_attr_l.l"
{yyerror("error in lexer - initial state\n");}
	YY_BREAK
case 6:
YY_RULE_SETUP
#line 141 "slp_attr_l.l"
{ ; }
	YY_BREAK
case 7:
YY_RULE_SETUP
#line 142 "slp_attr_l.l"
{BEGIN VALUE; yylval._i = *yytext; return(yylval._i);}
	YY_BREAK
case 8:
YY_RULE_SETUP
#line 143 "slp_attr_l.l"
{   
                          if (yyleng > 0 ) {
                             if(NULL != (yylval._s = xstrdup(yytext)))
                                return(_TAG);
                             else
                                return(0L);
                           }
                        }
	YY_BREAK
/* make it legal to have just an attr tag enclosed in parens */
case 9:
YY_RULE_SETUP
#line 153 "slp_attr_l.l"
{BEGIN INITIAL; yylval._i = *yytext; return(yylval._i); }
	YY_BREAK
/* anything else in the attribute state is an error */
case 10:
YY_RULE_SETUP
#line 156 "slp_attr_l.l"
{yyerror("error in lexer - attribute state\n");}
	YY_BREAK
case 11:
YY_RULE_SETUP
#line 158 "slp_attr_l.l"
{ ; }
	YY_BREAK
case 12:
YY_RULE_SETUP
#line 159 "slp_attr_l.l"
{yylval._i = *yytext; return(_MULTIVAL);}
	YY_BREAK
case 13:
#line 162 "slp_attr_l.l"
case 14:
YY_RULE_SETUP
#line 162 "slp_attr_l.l"
{ yylval._i = strtol(yytext, (char **) 0, 0); return _INT ;};
	YY_BREAK
case 15:
#line 165 "slp_attr_l.l"
case 16:
YY_RULE_SETUP
#line 165 "slp_attr_l.l"
{ yylval._i = strtoul(yytext, (char **)0, 0); return _INT; };
	YY_BREAK
case 17:
YY_RULE_SETUP
#line 168 "slp_attr_l.l"
{return(_TRUE);}
	YY_BREAK
case 18:
YY_RULE_SETUP
#line 169 "slp_attr_l.l"
{return(_FALSE);}
	YY_BREAK
case 19:
YY_RULE_SETUP
#line 171 "slp_attr_l.l"
{	
                           if (yyleng > 0) {
                              if(NULL != (yylval._s = xstrdup(yytext)))
                                 return(_STRING);
                              else
                                 return(0L);
                           }
                        }		
	YY_BREAK
case 20:
YY_RULE_SETUP
#line 180 "slp_attr_l.l"
{	
                           if (yyleng > 0) {
                              if(NULL != (yylval._s = xstrdup(yytext)))
                                 return(_ESCAPED);
                              else
                                 return(0L);
                           }
                        }
	YY_BREAK
case 21:
YY_RULE_SETUP
#line 190 "slp_attr_l.l"
{BEGIN INITIAL; yylval._i = *yytext; return(yylval._i);}
	YY_BREAK
/* anything else in the value state is an error */
case 22:
YY_RULE_SETUP
#line 193 "slp_attr_l.l"
{yyerror("error in lexer - value state\n");}
	YY_BREAK
case 23:
YY_RULE_SETUP
#line 195 "slp_attr_l.l"
ECHO;