tw.h

/***********************************************************************
*                                                                      *
*               This software is part of the ast package               *
*          Copyright (c) 1989-2011 AT&T Intellectual Property          *
*                      and is licensed under the                       *
*                 Eclipse Public License, Version 1.0                  *
*                    by AT&T Intellectual Property                     *
*                                                                      *
*                A copy of the License is available at                 *
*          http://www.eclipse.org/org/documents/epl-v10.html           *
*         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *
*                                                                      *
*              Information and Software Systems Research               *
*                            AT&T Research                             *
*                           Florham Park NJ                            *
*                                                                      *
*                 Glenn Fowler <[email protected]>                  *
*                                                                      *
***********************************************************************/
#pragma prototyped
/*
 * Glenn Fowler
 * AT&T Research
 *
 * tw common definitions
 */

#include <ast.h>
#include <expr.h>
#include <ls.h>
#include <find.h>
#include <fs3d.h>
#include <ftwalk.h>
#include <magic.h>
#include <error.h>
#include <debug.h>

#include "cmdarg.h"
#include "ftwlocal.h"

#define ignorecase	fts_number

#define PATH(f)		((f)->status==FTW_NAME?(f)->name:(f)->path)

#define ACT_CMDARG		1
#define ACT_CODE		2
#define ACT_CODETYPE		3
#define ACT_EVAL		4
#define ACT_INTERMEDIATE	5
#define ACT_LIST		6
#define ACT_SNAPSHOT		7

#define CMD_IMPLICIT	(CMD_USER<<0)

#define MEMMAKE(s,o)	(((s)<<8)|((o)&((1<<8)-1)))
#define MEMINDEX(x)	(((x)>>8)&((1<<8)-1))
#define MEMOFFSET(x)	((x)&((1<<8)-1))

#define T_type		64
#define T_DATE		(T_type+1)
#define T_GID		(T_type+2)
#define T_MODE		(T_type+3)
#define T_PERM		(T_type+4)
#define T_UID		(T_type+5)

#define F_args		1
#define F_atime		2
#define F_blocks	3
#define F_blksize	4
#define F_checksum	5
#define F_ctime		6
#define F_dev		7
#define F_fstype	8
#define F_gid		9
#define F_gidok		10
#define F_info		11
#define F_ino		12
#define F_level		13
#define F_local		14
#define F_mode		15
#define F_magic		16
#define F_md5sum	17
#define F_mime		18
#define F_mtime		19
#define F_name		20
#define F_nlink		21
#define F_parent	22
#define F_perm		23
#define F_path		24
#define F_rdev		25
#define F_size		26
#define F_status	27
#define F_symlink	28
#define F_type		29
#define F_uid		30
#define F_uidok		31
#define F_url		32
#define F_view		33
#define F_visit		34

#define C_AGAIN		35
#define C_BLK		36
#define C_C		37
#define C_CHR		38
#define C_CTG		39
#define C_D		40
#define C_DC		41
#define C_DIR		42
#define C_DNR		43
#define C_DNX		44
#define C_DOOR		45
#define C_DP		46
#define C_FIFO		47
#define C_FMT		48
#define C_FOLLOW	49
#define C_LNK		50
#define C_NOPOST	51
#define C_NR		52
#define C_NS		53
#define C_NX		54
#define C_REG		55
#define C_SOCK		56
#define C_SKIP		57

#define X_cmdarg	58
#define X_cmdflush	59
#define X_sum		60

#define M_MEMBER	61

typedef struct				/* unique file identifier	*/
{
	long		di[2];		/* dev,ino			*/
} Fileid_t;

typedef struct				/* Fileid_t visit		*/
{
	Dtlink_t	link;		/* table link			*/
	Fileid_t	id;		/* file id			*/
	Extype_t	value[1];	/* visit values			*/
} Visit_t;

typedef struct Local_s			/* local struct			*/
{
	struct Local_s*	next;		/* next in free list		*/
	Extype_t	value[1];	/* member values		*/
} Local_t;

typedef struct Snapshot_s		/* snapshot state		*/
{
	Sfio_t*		sp;		/* previous snapshot stream	*/
	Sfio_t*		tmp;		/* tmp string stream		*/
	char*		prev;		/* previous snapshot record	*/
	struct
	{
	char*		path;		/* path format			*/
	char*		easy;		/* easy format			*/
	char*		hard;		/* hard format			*/
	int		delim;		/* format delimiter char	*/
	}		format;
} Snapshot_t;

typedef struct				/* program state		*/
{
	int		act;		/* leaf node ACT_*		*/
	int		actII;		/* real action for intermediate	*/
	Exnode_t*	action;		/* action expression		*/
	int		args;		/* command arg count		*/
	Cmdarg_t*	cmd;		/* command arg state		*/
	int		cmdflags;	/* cmdopen() flags		*/
	int		compiled;	/* excomp() complete		*/
	int		errexit;	/* exit tw when cmd exit > this	*/
	int		errors;		/* error count			*/
	Exdisc_t	expr;		/* expr discipline		*/
	Find_t*		find;		/* fast find handle		*/
	int		finderror;	/* fast find generation error	*/
	int		ftwflags;	/* tree walk flags		*/
	Dt_t*		fstab;		/* fs type hash table		*/
	int		icase;		/* ignore case in sort		*/
	int		ignore;		/* ignore cmd and dir errors	*/
	int		info;		/* ftw.info checked by user	*/
	int		intermediate;	/* generate intermediate dirs	*/
	Local_t*	local;		/* local struct free list	*/
	int		localfs;	/* restrict to local fs mounts	*/
	int		localmem;	/* ftw.local member count	*/
	Magic_t*	magic;		/* magic tests			*/
	Magicdisc_t	magicdisc;	/* magic discipline		*/
	char*		pattern;	/* fast find pattern		*/
	Expr_t*		program;	/* compiled expressions		*/
	int		reverse;	/* reverse sort sense		*/
	Exnode_t*	select;		/* select expression		*/
	int		separator;	/* xargs list separator		*/
	Snapshot_t	snapshot;	/* snapshot state		*/
	int		(*sort)(Ftw_t*, Ftw_t*); 	/* sorter	*/
	Exnode_t*	sortkey;	/* sort key list		*/
	Dt_t*		vistab;		/* visit hash table		*/
	int		visitmem;	/* visit member count		*/
} State_t;

extern State_t		state;

extern void		compile(char*, int);
extern long		eval(Exnode_t*, Ftw_t*);
extern long		getnum(Exid_t*, Ftw_t*);
extern ssize_t		print(Sfio_t*, Ftw_t*, const char*);