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Revision 1.1 - (hide annotations)
Fri Feb 27 13:27:15 2004 UTC (17 years, 11 months ago) by gray
Branch: MAIN
Branch point for: alpha-2_50_90
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1 gray 1.1 /* dstring.h - Dynamic string handling include file. Requires strings.h.
2     Copyright (C) 1990, 1991, 1992 Free Software Foundation, Inc.
3    
4     This program is free software; you can redistribute it and/or modify
5     it under the terms of the GNU General Public License as published by
6     the Free Software Foundation; either version 2, or (at your option)
7     any later version.
8    
9     This program is distributed in the hope that it will be useful,
10     but WITHOUT ANY WARRANTY; without even the implied warranty of
11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12     GNU General Public License for more details.
13    
14     You should have received a copy of the GNU General Public License along
15     with this program; if not, write to the Free Software Foundation, Inc.,
16     59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
17    
18     #ifndef NULL
19     #define NULL 0
20     #endif
21    
22     /* A dynamic string consists of record that records the size of an
23     allocated string and the pointer to that string. The actual string
24     is a normal zero byte terminated string that can be used with the
25     usual string functions. The major difference is that the
26     dynamic_string routines know how to get more space if it is needed
27     by allocating new space and copying the current string. */
28    
29     typedef struct
30     {
31     int ds_length; /* Actual amount of storage allocated. */
32     char *ds_string; /* String. */
33     } dynamic_string;
34    
35    
36     /* Macros that look similar to the original string functions.
37     WARNING: These macros work only on pointers to dynamic string records.
38     If used with a real record, an "&" must be used to get the pointer. */
39     #define ds_strlen(s) strlen ((s)->ds_string)
40     #define ds_strcmp(s1, s2) strcmp ((s1)->ds_string, (s2)->ds_string)
41     #define ds_strncmp(s1, s2, n) strncmp ((s1)->ds_string, (s2)->ds_string, n)
42     #define ds_index(s, c) index ((s)->ds_string, c)
43     #define ds_rindex(s, c) rindex ((s)->ds_string, c)
44    
45     void ds_init ();
46     void ds_resize ();
47     char *ds_fgetname ();
48     char *ds_fgets ();
49     char *ds_fgetstr ();

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