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50 lines
2.0 KiB
C
50 lines
2.0 KiB
C
/* dstring.h - Dynamic string handling include file. Requires strings.h.
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Copyright (C) 1990, 1991, 1992 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#ifndef NULL
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#define NULL 0
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#endif
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/* A dynamic string consists of record that records the size of an
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allocated string and the pointer to that string. The actual string
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is a normal zero byte terminated string that can be used with the
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usual string functions. The major difference is that the
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dynamic_string routines know how to get more space if it is needed
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by allocating new space and copying the current string. */
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typedef struct
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{
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int ds_length; /* Actual amount of storage allocated. */
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char *ds_string; /* String. */
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} dynamic_string;
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/* Macros that look similar to the original string functions.
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WARNING: These macros work only on pointers to dynamic string records.
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If used with a real record, an "&" must be used to get the pointer. */
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#define ds_strlen(s) strlen ((s)->ds_string)
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#define ds_strcmp(s1, s2) strcmp ((s1)->ds_string, (s2)->ds_string)
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#define ds_strncmp(s1, s2, n) strncmp ((s1)->ds_string, (s2)->ds_string, n)
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#define ds_index(s, c) index ((s)->ds_string, c)
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#define ds_rindex(s, c) rindex ((s)->ds_string, c)
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void ds_init ();
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void ds_resize ();
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char *ds_fgetname ();
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char *ds_fgets ();
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char *ds_fgetstr ();
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