uscan.c

开源备份软件源码 AMANDA, the Advanced Maryland Automatic Network Disk Archiver, is a backup system that a

 * written prior permission.  U.M. makes no representations about the
 * suitability of this software for any purpose.  It is provided "as is"
 * without express or implied warranty.
 *
 * U.M. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL U.M.
 * BE LIABLE FOR ANY SPECIAL, 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.
 *
 * Authors: the Amanda Development Team.  Its members are listed in a
 * file named AUTHORS, in the root directory of this distribution.
 */
/*
 * $Id: uscan.l,v 1.27 2006/07/05 11:15:56 martinea Exp $
 *
 * lexer for amrecover interactive language
 */
#line 32 "uscan.l"
#include "amanda.h"
#include "uparse.h"

/*
 * We redefine this here to prevent compiler warning about ignoring fwrite
 * return value...
 */
#undef ECHO
#define ECHO do {						\
	if (fwrite(yytext, (size_t)yyleng, 1, yyout) <= 0) {	\
	    yyerror("ECHO failure");				\
	}							\
} while (0)

#define YY_NO_UNPUT

#define	DATE_ALLOC_SIZE		sizeof("YYYY-MM-DD-HH-MM-SS")	/* includes null */

#define YY_DECL	int yylex(void)
extern int	yylex(void);

extern void	yyerror(char *s);
extern int	yyparse(void);
static int	ll_parse_date(int type, char *text);
int		process_line(char *line);

#line 62 "uscan.l"
static char *string_buf = NULL;
#line 598 "uscan.c"

#define INITIAL 0
#define quotedpath 1

#ifndef YY_NO_UNISTD_H
/* Special case for "unistd.h", since it is non-ANSI. We include it way
 * down here because we want the user's section 1 to have been scanned first.
 * The user has a chance to override it with an option.
 */
#include <unistd.h>
#endif

#ifndef YY_EXTRA_TYPE
#define YY_EXTRA_TYPE void *
#endif

static int yy_init_globals (void );

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

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

    static void yyunput (int c,char *buf_ptr  );
    
#ifndef yytext_ptr
static void yy_flex_strncpy (char *,yyconst char *,int );
#endif

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

#ifndef YY_NO_INPUT

#ifdef __cplusplus
static int yyinput (void );
#else
static int input (void );
#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_LVALUE->yy_is_interactive ) \
		{ \
		int c = '*'; \
		size_t 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 \
		{ \
		errno=0; \
		while ( (result = fread(buf, 1, max_size, yyin))==0 && ferror(yyin)) \
			{ \
			if( errno != EINTR) \
				{ \
				YY_FATAL_ERROR( "input in flex scanner failed" ); \
				break; \
				} \
			errno=0; \
			clearerr(yyin); \
			} \
		}\
\

#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

/* end tables serialization structures and prototypes */

/* Default declaration of generated scanner - a define so the user can
 * easily add parameters.
 */
#ifndef YY_DECL
#define YY_DECL_IS_OURS 1

extern int yylex (void);

#define YY_DECL int yylex (void)
#endif /* !YY_DECL */

/* 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

/** The main scanner function which does all the work.
 */
YY_DECL
{
	register yy_state_type yy_current_state;
	register char *yy_cp, *yy_bp;
	register int yy_act;
    
#line 65 "uscan.l"



    /* literal keyword tokens */


#line 759 "uscan.c"

	if ( !(yy_init) )
		{
		(yy_init) = 1;

#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 ) {
			yyensure_buffer_stack ();
			YY_CURRENT_BUFFER_LVALUE =
				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 >= 137 )
					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] != 169 );

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 71 "uscan.l"
{ return LISTHOST; }
	YY_BREAK
case 2:
YY_RULE_SETUP
#line 72 "uscan.l"
{ return LISTDISK; }
	YY_BREAK
case 3:
YY_RULE_SETUP
#line 73 "uscan.l"
{ return SETHOST; }
	YY_BREAK
case 4:
YY_RULE_SETUP
#line 74 "uscan.l"
{ return SETDISK; }
	YY_BREAK
case 5:
YY_RULE_SETUP
#line 75 "uscan.l"
{ return SETDATE; }
	YY_BREAK
case 6:
YY_RULE_SETUP
#line 76 "uscan.l"
{ return SETMODE; }
	YY_BREAK
case 7:
YY_RULE_SETUP
#line 77 "uscan.l"
{ return SETTAPE; }
	YY_BREAK
case 8:
YY_RULE_SETUP
#line 78 "uscan.l"
{ return SETDEVICE; }
	YY_BREAK
case 9:
YY_RULE_SETUP
#line 79 "uscan.l"
{ return DASH_H; }
	YY_BREAK
case 10:
YY_RULE_SETUP
#line 80 "uscan.l"
{ return CD; }
	YY_BREAK
case 11:
YY_RULE_SETUP
#line 81 "uscan.l"
{ return CDX; }
	YY_BREAK
case 12:
YY_RULE_SETUP
#line 82 "uscan.l"
{ return QUIT; }
	YY_BREAK
case 13:
YY_RULE_SETUP
#line 83 "uscan.l"
{ return QUIT; }
	YY_BREAK
case 14:
YY_RULE_SETUP
#line 84 "uscan.l"
{ return DHIST; }
	YY_BREAK
case 15:
YY_RULE_SETUP
#line 85 "uscan.l"
{ return LS; }
	YY_BREAK
case 16:
YY_RULE_SETUP
#line 86 "uscan.l"
{ return ADD; }
	YY_BREAK
case 17:
YY_RULE_SETUP
#line 87 "uscan.l"
{ return ADDX; }
	YY_BREAK
case 18:
YY_RULE_SETUP
#line 88 "uscan.l"
{ return LIST; }
	YY_BREAK
case 19:
YY_RULE_SETUP
#line 89 "uscan.l"
{ return DELETE; }
	YY_BREAK
case 20:
YY_RULE_SETUP
#line 90 "uscan.l"
{ return DELETEX; }
	YY_BREAK
case 21:
YY_RULE_SETUP
#line 91 "uscan.l"
{ return PWD; }
	YY_BREAK
case 22:
YY_RULE_SETUP
#line 92 "uscan.l"
{ return CLEAR; }
	YY_BREAK
case 23:
YY_RULE_SETUP
#line 93 "uscan.l"
{ return HELP; }
	YY_BREAK
case 24:
YY_RULE_SETUP
#line 94 "uscan.l"
{ return HELP; }
	YY_BREAK
case 25:
YY_RULE_SETUP
#line 95 "uscan.l"
{ return LCD; }
	YY_BREAK
case 26:
YY_RULE_SETUP
#line 96 "uscan.l"
{ return LPWD; }
	YY_BREAK
case 27:
YY_RULE_SETUP
#line 97 "uscan.l"
{ return EXTRACT; }
	YY_BREAK
case 28:
YY_RULE_SETUP
#line 98 "uscan.l"
{ return SMB; }
	YY_BREAK
case 29:
YY_RULE_SETUP
#line 99 "uscan.l"
{ return TAR; }
	YY_BREAK
case 30:
YY_RULE_SETUP
#line 100 "uscan.l"
{ return MODE; }
	YY_BREAK

    /* dates */

case 31:
YY_RULE_SETUP
#line 106 "uscan.l"
{ return ll_parse_date(1, yytext); }
	YY_BREAK
case 32:
YY_RULE_SETUP
#line 107 "uscan.l"
{ return ll_parse_date(2, yytext); }
	YY_BREAK
case 33:
YY_RULE_SETUP
#line 108 "uscan.l"
{ return ll_parse_date(3, yytext); }
	YY_BREAK
case 34:
YY_RULE_SETUP
#line 109 "uscan.l"
{ return ll_parse_date(4, yytext); }
	YY_BREAK
case 35:
YY_RULE_SETUP
#line 110 "uscan.l"
{ return ll_parse_date(5, yytext); }
	YY_BREAK

    /* quoted file names */

case 36:
YY_RULE_SETUP
#line 116 "uscan.l"
{
    if(string_buf != NULL) {
	g_printf("ERROR:string_buf != NULL: %s\n",string_buf);
    }
    BEGIN(quotedpath);
    strappend(string_buf, yytext);
}
	YY_BREAK
case 37:
/* rule 37 can match eol */
YY_RULE_SETUP
#line 124 "uscan.l"
{
    strappend(string_buf, yytext);
}
	YY_BREAK
case 38:
YY_RULE_SETUP
#line 128 "uscan.l"
{
    /* escaped character (including quote) */
    strappend(string_buf, yytext);
}
	YY_BREAK
case 39:
YY_RULE_SETUP
#line 133 "uscan.l"
{ /* saw closing quote - all done */
    strappend(string_buf, yytext);
    yylval.strval = string_buf;
    string_buf = NULL;
    BEGIN(INITIAL);
    return PATH;
}
	YY_BREAK

    /* file names */

case 40:
YY_RULE_SETUP
#line 145 "uscan.l"
{
    yylval.strval = stralloc(yytext);
    return PATH;
}
	YY_BREAK

    /* whitespace */

case 41:
/* rule 41 can match eol */
YY_RULE_SETUP
#line 154 "uscan.l"
;     /* whitespace */
	YY_BREAK

    /* anything else */
    /* everything should have been handled by now, so this rule is disabled */


#if 0
.	{ yyerror("invalid character"); }
#endif

case 42:
YY_RULE_SETUP
#line 167 "uscan.l"
ECHO;
	YY_BREAK
#line 1095 "uscan.c"
case YY_STATE_EOF(INITIAL):
case YY_STATE_EOF(quotedpath):