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cmdarg.h

/***********************************************************************
*                                                                      *
*               This software is part of the ast package               *
*          Copyright (c) 1985-2010 AT&T Intellectual Property          *
*                      and is licensed under the                       *
*                  Common Public License, Version 1.0                  *
*                    by AT&T Intellectual Property                     *
*                                                                      *
*                A copy of the License is available at                 *
*            http://www.opensource.org/licenses/cpl1.0.txt             *
*         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
*                                                                      *
*              Information and Software Systems Research               *
*                            AT&T Research                             *
*                           Florham Park NJ                            *
*                                                                      *
*                 Glenn Fowler <gsf@research.att.com>                  *
*                  David Korn <dgk@research.att.com>                   *
*                   Phong Vo <kpv@research.att.com>                    *
*                                                                      *
***********************************************************************/
#pragma prototyped
/*
 * Glenn Fowler
 * AT&T Research
 *
 * xargs/tw command arg list interface definitions
 */

#ifndef _CMDARG_H
#define _CMDARG_H

#define CMD_CHECKED     (1<<9)            /* cmdopen() argv[0] ok       */
#define CMD_EMPTY (1<<0)            /* run once, even if no args  */
#define CMD_EXACT (1<<1)            /* last command must have argmax*/
#define CMD_IGNORE      (1<<2)            /* ignore EXIT_QUIT exit      */
#define CMD_INSERT      (1<<3)            /* argpat for insertion       */
#define CMD_MINIMUM     (1<<4)            /* argmax is a minimum        */
#define CMD_NEWLINE     (1<<5)            /* echo separator is newline  */
#define CMD_POST  (1<<6)            /* argpat is post arg position      */
#define CMD_QUERY (1<<7)            /* trace and query each command     */
#define CMD_SILENT      (1<<10)           /* no error messages          */
#define CMD_TRACE (1<<8)            /* trace each command         */

#define CMD_USER  (1<<12)

typedef struct                      /* cmd + args info            */
{
      struct
      {
      size_t            args;       /* total args                 */
      size_t            commands;   /* total commands       */
      }           total;

      int         argcount;   /* current arg count          */
      int         argmax;           /* max # args                 */
      int         echo;       /* just an echo               */
      int         flags;            /* CMD_* flags                */
      int         insertlen;  /* strlen(insert)       */
      int         offset;           /* post arg offset            */

      char**            argv;       /* exec argv                  */
      char**            firstarg;   /* first argv file arg        */
      char**            insertarg;  /* argv before insert         */
      char**            postarg;    /* start of post arg list     */
      char**            nextarg;    /* next argv file arg         */
      char*       nextstr;    /* next string ends before here     */
      char*       laststr;    /* last string ends before here     */
      char*       insert;           /* replace with current arg   */
      char        buf[1];           /* argv and arg buffer        */
} Cmdarg_t;

#if _BLD_ast && defined(__EXPORT__)
#define extern          __EXPORT__
#endif

extern Cmdarg_t*  cmdopen(char**, int, int, const char*, int);
extern int        cmdflush(Cmdarg_t*);
extern int        cmdarg(Cmdarg_t*, const char*, int);
extern int        cmdclose(Cmdarg_t*);

#undef      extern

#endif

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