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/* dstring.h - Dynamic string handling include file. Requires strings.h.
Copyright (C) 1990, 1991, 1992 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 2, 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., 675 Mass Ave, Cambridge, MA 02139, 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 ();
void ds_resize ();
char *ds_fgetname ();
char *ds_fgets ();
char *ds_fgetstr ();
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