/* dstring.h - Dynamic string handling include file.  Requires strings.h.

   Copyright (C) 1990-1992, 2004, 2007, 2010, 2014-2015 Free Software

   Foundation, Inc.

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 3, or (at your option)

   any later version.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public

   License along with this program; if not, write to the Free

   Software Foundation, Inc., 51 Franklin Street, Fifth Floor,

   Boston, MA 02110-1301 USA.  */

#ifndef NULL

#define NULL 0

#endif

/* A dynamic string consists of record that records the size of an

   allocated string and the pointer to that string.  The actual string

   is a normal zero byte terminated string that can be used with the

   usual string functions.  The major difference is that the

   dynamic_string routines know how to get more space if it is needed

   by allocating new space and copying the current string.  */

typedef struct

{

  int ds_length;		/* Actual amount of storage allocated.  */

  char *ds_string;		/* String.  */

} dynamic_string;

/* Macros that look similar to the original string functions.

   WARNING:  These macros work only on pointers to dynamic string records.

   If used with a real record, an "&" must be used to get the pointer.  */

#define ds_strlen(s)		strlen ((s)->ds_string)

#define ds_strcmp(s1, s2)	strcmp ((s1)->ds_string, (s2)->ds_string)

#define ds_strncmp(s1, s2, n)	strncmp ((s1)->ds_string, (s2)->ds_string, n)

#define ds_index(s, c)		index ((s)->ds_string, c)

#define ds_rindex(s, c)		rindex ((s)->ds_string, c)

void ds_init (dynamic_string *string, int size);

void ds_resize (dynamic_string *string, int size);

char *ds_fgetname (FILE *f, dynamic_string *s);

char *ds_fgets (FILE *f, dynamic_string *s);

char *ds_fgetstr (FILE *f, dynamic_string *s, char eos);