* Copyright (c) 2000, 2001, 2002, 2003, 2004 by Martin C. Shepherd.
* All rights reserved.
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, and/or sell copies of the Software, and to permit persons
* to whom the Software is furnished to do so, provided that the above
* copyright notice(s) and this permission notice appear in all copies of
* the Software and that both the above copyright notice(s) and this
* permission notice appear in supporting documentation.
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
* OF THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
* HOLDERS INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL
* INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING
* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
* Except as contained in this notice, the name of a copyright holder
* shall not be used in advertising or otherwise to promote the sale, use
* or other dealings in this Software without prior written authorization
* of the copyright holder.
* StringGroup objects provide memory for modules that need to
* allocate lots of small strings without needing to free any of them
* individually, but rather is happy to free them all at the same
* time. Taking advantage of these properties, StringGroup objects
* avoid the heap fragmentation that tends to occur when lots of small
* strings are allocated directly from the heap and later free'd. They
* do this by allocating a list of large character arrays in each of
* which multiple strings are stored. Thus instead of allocating lots
* of small strings, a few large character arrays are allocated. When
* the strings are free'd on mass, this list of character arrays is
* maintained, ready for subsequent use in recording another set of
typedef struct StringGroup StringGroup;
* The following constructor allocates a string-allocation object.
* The segment_size argument specifies how long each string segment
* array should be. This should be at least 10 times the length of
* the average string to be recorded in the string group, and
* sets the length of the longest string that can be stored.
StringGroup *_new_StringGroup(int segment_size);
* Delete all of the strings that are currently stored by a specified
* StringGroup object.
void _clr_StringGroup(StringGroup *sg);
* Make a copy of the specified string, returning a pointer to
* the copy, or NULL if there was insufficient memory. If the
* remove_escapes argument is non-zero, backslashes that escape
* other characters will be removed.
char *_sg_store_string(StringGroup *sg, const char *string, int remove_escapes);
* Allocate memory for a string of a given length.
char *_sg_alloc_string(StringGroup *sg, int length);
* Delete a StringGroup object (and all of the strings that it
StringGroup *_del_StringGroup(StringGroup *sg);