CHANGELOG

Version 3.2 - tbd
------------------------

 * adds cxMempoolTransfer() and cxMempoolTransferObject()
 * adds support for different destruction strategies in CxMempool
 * adds new key-value-based list implementation
 + adds support for integer keys to CxHashKey
 * adds cxListSet()
 * adds cxListContains()
 * adds cxListFirst() and cxListLast()
 * adds cxListRemoveAndGetFirst() and cxListRemoveAndGetLast(),
   and corresponding macro aliases cxListPopFront() and cxListPop()
 * adds cxListEmplace(), cxListEmplaceAt(), and cxMapEmplace()
 * adds cxListInsertUnique() and cxListInsertUniqueArray()
 * adds cx_array_insert_unique() and various convenience macros
 * adds cx_linked_list_insert_unique() and cx_linked_list_insert_unique_chain()
 * adds cxBufferShrink()
 * adds cxTreeSize()
 * adds CX_PRIstr and CX_SFMT macros for formatting UCX strings
 * adds cx_strcpy() and cx_strcpy_a()
 * adds cxJsonArrRemove() and cxJsonObjRemove()
 * adds cxStdlibAllocator and allows changes of cxDefaultAllocator
 * improves performance of the CxList array list implementation
 * changes cx_str() and cx_mutstr() to allow NULL strings
 * changes cx_strcast() to also accept C-strings as input
 * changes grow strategy for the memory pool to reduce reallocations
 * changes grow strategy for CxBuffer, which does now take the page size into account
 * changes the implementation of cx_strreplacen() for improved efficiency
 * changes all cxListIterator() and cxMapIterator() family of functions to also accept NULL as argument
 * changes insert_element member function of CxList to accept NULL source and return a pointer to the inserted element
 * changes the compare function wrapper for pointer lists so that it no longer invokes the actual compare function for NULL pointers
 * changes struct cx_array_reallocator_s by replacing the four generic data members with two specifically named members
 * fixes critical memory overflow in the stack-based array reallocator (this unfortunately breaks the function signature)
 * fixes critical bug in cx_array_insert_sorted() that caused an infinite loop when inserting duplicates
 * fixes mempool implementation not supporting NULL as argument for realloc
 * fixes mempool implementation not supporting zero as size for realloc
 * fixes that the elem_count member of an iterator was not updated after removing an element flagged by cxIteratorFlagRemoval()
 * fixes that starting an iteration in a non-root node incorrectly continues iteration with the siblings of that node
 * fixes unnecessary allocations in cx_strcat() family of functions
 * fixes errno value after failing cxBufferSeek() to be consistently EINVAL
 * fixes implementation of cxBufferTerminate()
 * fixes allocator arguments for some printf.h functions not being const
 * fixes that cx_tree_search() did not investigate subtrees with equally good distance
 * fixes that memory was freed by the wrong allocator in cx_vasprintf_a() when the underlying vsnprintf() failed
 * removes the use of C23 attributes because they don't mix well with GNU attributes in GCC 15

Version 3.1 - 2025-02-11
------------------------

 * adds properties.h
 * adds tree.h
 * adds json.h
 * adds locale-independent string to number conversion functions
 * adds reallocarray() like functions to allocator.h
 * adds cxIterator() to create iterators over raw C arrays
 * adds cxIteratorPtr() to create iterators over raw C pointer arrays
 * adds cx_array_reallocator() and cx_array_default_reallocator
 * adds several new array and list functions
 * adds cxBufferReset()
 * adds cxBufferAppend()
 * adds cxBufferEnableFlushing() and cxBufferFlush()
 * adds CX_BUFFER_COPY_ON_WRITE and CX_BUFFER_COPY_ON_EXTEND flags
 * adds cxBufferWriteFunc and cxBufferReadFunc function pointers (for convenience)
 * adds cx_cmp_ptr()
 * adds cx_vcmp_* family of functions
 * adds cx_sprintf() and several more variants
 * adds runtime constants to read out the actual SBO sizes
 * adds improved version of UCX 2 Test framework (now a self-contained header)
 * adds cx_nmemb() utility function to common.h
 * changes that CxMap returns own CxMapIterator to save memory in CxIterator
 * changes name of cxBasicMempoolCreate() to cxMempoolCreateSimple()
 * changes all functions, for which there is no dedicated xyz_a variant,
   to accept NULL as allocator argument (in which case a default allocator will be used)
 * changes the name of destroy functions that actually free the memory to better indicate their behavior
 * changes cx_strcat variants to allow handling of ENOMEM
 * changes cx_strcast() to also accept cxstring (and doing nothing in that case)
 * changes the behavior of cxBufferSeek() to allow offset zero for SEEK_END
 * moves cx_compare_func typedef to compare.h
 * moves cx_szmul() to common.h
 * moves stream copy functions to new streams.h
 * removes cx_strupper() and cx_strlower() because they only do the right thing in special cases
 * removes several *_m variants of functions in string.h in favor of automatic conversion
 * removes utils.h
 * removes flag_removal function from iterator
 * removes cxMapDetach() and makes cxMapRemoveAndGet() compatible with both map variants
 * removes the API for changing the store_pointer property of collections after their creation
 * removes CMake
 * removes GTest dependency
 * removes flags to disable SBO in tests
 * removes CX_LINKED_LIST_SWAP_SBO_SIZE (it's not really an optimization for linked lists)
 * fixes cx_strcmp() and cx_strcasecmp() not being useful for lexicographic ordering
 * fixes cx_hash_key_cxstr() evaluating the argument twice
 * fixes critical bug that produced wrong results when comparing lists of different type but same size
 * ends UCX 2.1 long term support

Version 3.0 - 2023-07-09
------------------------

 * complete redesign from scratch
 * collections can now store copies of objects and not just pointers
 * collections are now dynamically implemented
 * users of the library can specify own implementations of collections that work with the UCX API
 * low level API for custom lists that do not use the UCX structures
 * various fixes and improvements
 * drops some other, rarely used, features
 * removes testing implementation from the lib


Version 2.1 - 2019-12-30
------------------------

* adds string replace functions
* adds set operations for UcxList and UcxMap
* adds sstrcaseprefix() and sstrcasesuffix()
* improves Doxygen documentation in ucx/string.h
* adds UcxArray data type
* adds support for CMake builds, but main build system is still autotools

Version 2.0 - 2018-12-28
------------------------

* some uncritical bug fixes
* overflow of sstrnlen now returns SIZE_MAX instead of zero
* adds scstr_t - a const char* variant for sstr_t
* renames utility compare functions

Version 1.1 - 2018-05-14
------------------------

* adds missing 32 bit support to integer overflow checks
* adds ucx_buffer_to_sstr() macro
* adds ucx_avl_free_content()
* adds some more compare and distance functions in utils.h
* adds SFMT() and PRIsstr convenience macros
* destructor functions for *_free_content() functions are now optional

Version 1.0.1 - 2018-01-21
--------------------------

* some bug fixes
* adds integer overflow checks

Version 1.0 - 2017-10-28
------------------------

* first stable version of UCX released