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-/* sb.h - header file for string buffer manipulation routines
- Copyright 1994, 1995, 2000, 2003 Free Software Foundation, Inc.
-
- Written by Steve and Judy Chamberlain of Cygnus Support,
- sac@cygnus.com
-
- This file is part of GAS, the GNU Assembler.
-
- GAS 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.
-
- GAS 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 GAS; see the file COPYING. If not, write to the Free
- Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
- 02110-1301, USA. */
-
-#ifndef SB_H
-
-#define SB_H
-
-#include <stdio.h>
-#include "ansidecl.h"
-
-/* String blocks
-
- I had a couple of choices when deciding upon this data structure.
- gas uses null terminated strings for all its internal work. This
- often means that parts of the program that want to examine
- substrings have to manipulate the data in the string to do the
- right thing (a common operation is to single out a bit of text by
- saving away the character after it, nulling it out, operating on
- the substring and then replacing the character which was under the
- null). This is a pain and I remember a load of problems that I had with
- code in gas which almost got this right. Also, it's harder to grow and
- allocate null terminated strings efficiently.
-
- Obstacks provide all the functionality needed, but are too
- complicated, hence the sb.
-
- An sb is allocated by the caller, and is initialized to point to an
- sb_element. sb_elements are kept on a free lists, and used when
- needed, replaced onto the free list when unused. */
-
-#define sb_max_power_two 30 /* Don't allow strings more than
- 2^sb_max_power_two long. */
-
-typedef struct sb
-{
- char *ptr; /* Points to the current block. */
- int len; /* How much is used. */
- int pot; /* The maximum length is 1<<pot. */
- struct le *item;
-}
-sb;
-
-/* Structure of the free list object of a string block. */
-
-typedef struct le
-{
- struct le *next;
- int size;
- char data[1];
-}
-sb_element;
-
-/* The free list. */
-
-typedef struct
-{
- sb_element *size[sb_max_power_two];
-}
-sb_list_vector;
-
-extern void sb_new (sb *);
-extern void sb_kill (sb *);
-extern void sb_add_sb (sb *, sb *);
-extern void sb_scrub_and_add_sb (sb *, sb *);
-extern void sb_reset (sb *);
-extern void sb_add_char (sb *, int);
-extern void sb_add_string (sb *, const char *);
-extern void sb_add_buffer (sb *, const char *, int);
-extern char *sb_terminate (sb *);
-extern int sb_skip_white (int, sb *);
-extern int sb_skip_comma (int, sb *);
-
-/* Actually in input-scrub.c. */
-extern void input_scrub_include_sb (sb *, char *, int);
-
-#endif /* SB_H */