Overview

fixes compilation errors when using a C++ compiler and a high warning level

fixes incorrect nonnull-attribute for various list.h functions

adds cx_system_page_size() to allocator.h

adds cx_compare_func2 function pointer that supports compare functions with custom data

adds a new (optional) capacity parameter to cxJsonCreateArr() and cxJsonObjPutArr()

adds cxJsonFromString(), cxJsonToString(), and cxJsonToPrettyString()

adds cxJsonClone()

adds cxJsonCompare()

adds cxMapCompare()

adds line continuation support to CxProperties / CxPropertiesConfig

adds cx_hash_key_as_string()

adds support for CxHashKey pointers in CX_HASH_KEY() and all map functions

adds CX_NULLSTR convenience macro

adds cx_strcast_m()

adds cx_strat()

adds cx_bstr() and cx_bstr_m()

adds cxBufferMaximumCapacity()

adds cxBufferAppendString()

adds CX_BUFFER_DO_NOT_FREE buffer flag

changes the parameter order of cxBufferInit() and cxBufferCreate()

changes cxBufferReserve() to allow reducing the capacity

changes cxBufferTerminate() to automatically shrink the buffer

changes cxBufferTerminate() so that position and size are equal after a successful operation

changes cxBufferPutString() to accept any kind of string that cx_strcast() supports

changes that multiple string.h functions now also automatically apply cx_strcast() where possible

changes the names of cxDefineDestructor() and cxDefineAdvancedDestructor() to cxSetDestructor() and cxSetdvancedDestructor()

changes the name of cxCollectionCompareFunc() to cxSetCompareFunc()

changes the entire low-level array-list API by making it much simpler

changes the tree API towards a more simple design

changes the members of CxJson and CxJsonValue

changes the return value of cxJsonObjIter() to CxMapIterator

changes CxTree structure so that it now inherits CX_COLLECTION_BASE

changes cxPropertiesLoad() to directly load properties from a file to a CxMap

changes cxFreeDefault() from a macro to a function so that it can be used as a simple destructor

fixes cxJsonWrite() incorrectly returning non-zero when strings needed to be escaped

fixes cxJsonNext() incorrectly returning CX_JSON_INCOMPLETE_DATA when the input ends with trailing spaces

fixes critical memory leak when using cxMapFree() on a kv-list that is using destructors

fixes critical use-after-free with keys stored in kv-lists

fixes that overwriting items with cxMapPut() in a kv-list did not work

fixes that cxReallocate(), cxReallocateArray(), cx_reallocate(), and cx_reallocatearray() were not returning zero after freeing the memory when passed a size of zero

fixes that cx_list_default_insert_array() has the wrong nonnull attribute when used for cxListEmplaceArray()

removes the CX_STR() macro and instead makes the cx_str() inlinable

removes the cx_str*_m() functions

removes the sort_members feature from CxJsonWriter

removes the source and sink API from properties.h

removes the flush feature from CxBuffer

removes the ability to remove elements from the iterators created with cxIterator() and cxIteratorPtr()

removes several unnecessary convenience functions

removes the complicated wrapping of pointer lists

removes cxIteratorRef()

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 support for comparing arbitrary strings without explicit call to cx_strcast()

adds clone, union, difference, and intersection functions for CxList and CxMap

adds cxListContains() and cxMapContains()

adds cxListReserve() and cxListShrink()

adds cxListSet()

adds cxListFirst() and cxListLast()

adds cxListRemoveAndGetFirst() and cxListRemoveAndGetLast(), and corresponding macro aliases cxListPopFront() and cxListPop()

adds cxListEmplace(), cxListEmplaceAt(), cxListEmplaceArray(), cxListEmplaceArrayAt(), 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 cxCollectionCompareFunc() to conveniently set a compare function for a collection without needing to access the base struct manually

adds cxBufferShrink()

adds cxBufferPop()

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 over-aggressively declaring functions as static inline

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() families 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

changes cx_array_reserve() so that it reserves exactly the requested capacity (i.e., without overallocation)

changes all other array functions to perform smart overallocation to avoid too many subsequent allocations

changes that binary search and infimum always report the largest index, and supremum always reports the smallest index when the found element appears more than once in the array

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 ineffective overflow check in cx_strcat() family of functions

fixes errno value after failing cxBufferSeek() to be consistently EINVAL

fixes implementation of cxBufferTerminate()

fixes that cxBufferWrite() could auto-extend the buffer beyond the configured threshold

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 all functions that create mutating iterators in favor of making all iterators possibly mutating

removes the use of C23 attributes because they don't mix well with GNU attributes in GCC 15

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

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

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

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

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

some bug fixes

adds integer overflow checks

first stable version of UCX released