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. 4 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. 9 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. 14 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. */ 19 20 #ifndef NULL 21 #define NULL 0 22 #endif 23 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. */ 30 31 typedef struct 32 { 33 int ds_length; /* Actual amount of storage allocated. */ 34 char *ds_string; /* String. */ 35 } dynamic_string; 36 37 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) 46 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); 52