AsciiSrcP.h

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/*
* $XConsortium: AsciiSrcP.h,v 1.10 94/04/17 20:11:49 kaleb Exp $
*/


/***********************************************************

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Copyright 1987, 1988 by Digital Equipment Corporation, Maynard, Massachusetts.

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******************************************************************/

/*
 * AsciiSrcP.h - Private Header for Ascii Text Source.
 *
 * This is the private header file for the Ascii Text Source.
 * It is intended to be used with the Text widget, the simplest way to use
 * this text source is to use the AsciiText Object.
 *
 * Date:    June 29, 1989
 *
 * By:      Chris D. Peterson
 *          MIT X Consortium 
 *          kit@expo.lcs.mit.edu
 */

/* 
 * TextSrcP.h - Private definitions for AsciiSrc object
 * 
 */

#ifndef _XawAsciiSrcP_h
#define _XawAsciiSrcP_h

#include <X11/Xaw3d/TextSrcP.h>
#include <X11/Xaw3d/AsciiSrc.h>

/************************************************************
 *
 * Private declarations.
 *
 ************************************************************/

#ifdef L_tmpnam
#define TMPSIZ L_tmpnam
#else
#define TMPSIZ 32               /* bytes to allocate for tmpnam */
#endif

#define MAGIC_VALUE ((XawTextPosition) -1) /* Magic value. */

#define streq(a, b)        ( strcmp((a), (b)) == 0 )

typedef struct _Piece {         /* Piece of the text file of BUFSIZ allocated 
                                   characters. */
  char * text;                  /* The text in this buffer. */
  XawTextPosition used;         /* The number of characters of this buffer 
                                   that have been used. */
  struct _Piece *prev, *next;   /* linked list pointers. */
} Piece;

/************************************************************
 *
 * New fields for the AsciiSrc object class record.
 *
 ************************************************************/

typedef struct _AsciiSrcClassPart { char foo; } AsciiSrcClassPart;

/* Full class record declaration */
typedef struct _AsciiSrcClassRec {
    ObjectClassPart     object_class;
    TextSrcClassPart    text_src_class;
    AsciiSrcClassPart   ascii_src_class;
} AsciiSrcClassRec;

extern AsciiSrcClassRec asciiSrcClassRec;

/* New fields for the AsciiSrc object record */

typedef struct _AsciiSrcPart {

  /* Resources. */

  char       *string;           /* either the string, or the
                                   file name, depending upon the type. */
  XawAsciiType type;            /* either string or disk. */
  XawTextPosition piece_size;   /* Size of text buffer for each piece. */
  Boolean data_compression;     /* compress to minimum memory automatically
                                   on save? */
  XtCallbackList callback;      /* A callback list to call when the source is
                                   changed. */
  Boolean use_string_in_place;  /* Use the string passed in place. */
  int     ascii_length;         /* length field for ascii string emulation. */

#ifdef ASCII_DISK
  String filename;              /* name of file for Compatability. */
#endif /* ASCII_DISK */

/* Private data. */

  Boolean       is_tempfile;      /* Is this a temporary file? */
  Boolean       changes;          /* Has this file been edited? */
  Boolean       allocated_string; /* Have I allocated the
                                     string in ascii_src->string? */
  XawTextPosition length;       /* length of file */
  Piece * first_piece;          /* first piece of the text. */
} AsciiSrcPart;

/****************************************************************
 *
 * Full instance record declaration
 *
 ****************************************************************/

typedef struct _AsciiSrcRec {
  ObjectPart    object;
  TextSrcPart   text_src;
  AsciiSrcPart  ascii_src;
} AsciiSrcRec;

#endif /* _XawAsciiSrcP_h */ 

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