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1 /* dstring.h - Dynamic string handling include file. Requires strings.h.
2 Copyright (C) 1990-1992, 2004, 2007, 2010, 2014-2015, 2017 Free
3 Software Foundation, Inc.
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 3, or (at your option)
8 any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public
16 License along with this program; if not, write to the Free
17 Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 Boston, MA 02110-1301 USA. */
20 #ifndef NULL
21 #define NULL 0
24 /* A dynamic string consists of record that records the size of an
25 allocated string and the pointer to that string. The actual string
26 is a normal zero byte terminated string that can be used with the
27 usual string functions. The major difference is that the
28 dynamic_string routines know how to get more space if it is needed
29 by allocating new space and copying the current string. */
31 typedef struct
33 int ds_length; /* Actual amount of storage allocated. */
34 char *ds_string; /* String. */
35 } dynamic_string;
38 /* Macros that look similar to the original string functions.
39 WARNING: These macros work only on pointers to dynamic string records.
40 If used with a real record, an "&" must be used to get the pointer. */
41 #define ds_strlen(s) strlen ((s)->ds_string)
42 #define ds_strcmp(s1, s2) strcmp ((s1)->ds_string, (s2)->ds_string)
43 #define ds_strncmp(s1, s2, n) strncmp ((s1)->ds_string, (s2)->ds_string, n)
44 #define ds_index(s, c) index ((s)->ds_string, c)
45 #define ds_rindex(s, c) rindex ((s)->ds_string, c)
47 void ds_init (dynamic_string *string, int size);
48 void ds_resize (dynamic_string *string, int size);
49 char *ds_fgetname (FILE *f, dynamic_string *s);
50 char *ds_fgets (FILE *f, dynamic_string *s);
51 char *ds_fgetstr (FILE *f, dynamic_string *s, char eos);