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16
.gitignore
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.gitignore
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.dub
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docs.json
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__dummy.html
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docs/
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/libxdiff
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libxdiff.so
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libxdiff.dylib
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libxdiff.dll
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libxdiff.a
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libxdiff.lib
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libxdiff-test-*
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*.exe
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*.pdb
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*.o
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*.obj
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*.lst
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5
.vscode/settings.json
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.vscode/settings.json
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{
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"editor.insertSpaces": false,
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"editor.tabSize": 4,
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"editor.detectIndentation": false
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}
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23
LICENSE
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LICENSE
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Boost Software License - Version 1.0 - August 17th, 2003
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Permission is hereby granted, free of charge, to any person or organization
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obtaining a copy of the software and accompanying documentation covered by
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this license (the "Software") to use, reproduce, display, distribute,
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execute, and transmit the Software, and to prepare derivative works of the
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Software, and to permit third-parties to whom the Software is furnished to
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do so, all subject to the following:
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The copyright notices in the Software and this entire statement, including
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the above license grant, this restriction and the following disclaimer,
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must be included in all copies of the Software, in whole or in part, and
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all derivative works of the Software, unless such copies or derivative
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works are solely in the form of machine-executable object code generated by
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a source language processor.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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31
README.md
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README.md
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# xdiff
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Low-level wrapper over the C API [LibXDiff](http://www.xmailserver.org/xdiff-lib.html) for D. All values are taken from uapi `<xdiff.h>`.
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## Installation
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Add to `dub.json`:
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```json
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{
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"dependencies": {
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"xdiff": "~>0.1.0"
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}
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}
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```
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Or to `dub.sdl`:
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```
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dependency "xdiff" version="~>0.1.0"
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```
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Run `dub build`.
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## Usage
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Import the module: `import xdiff;`
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## License
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Boost Software License 1.0. See [LICENSE](LICENSE).
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dub.json
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dub.json
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{
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"authors": [
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"Alexander Zhirov"
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],
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"copyright": "Copyright © 2025, Alexander Zhirov",
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"description": "The LibXDiff library implements basic and yet complete functionalities to create file differences/patches to both binary and text files.",
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"license": "BSL-1.0",
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"name": "xdiff",
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"targetType": "library"
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}
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4
dub.settings.json
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4
dub.settings.json
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{
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"defaultArchitecture": "x86_64",
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"defaultCompiler": "ldc2"
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}
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150
source/xdiff.d
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source/xdiff.d
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module xdiff;
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extern (C):
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// ------------------------------------------------------------
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// Константы и флаги
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// ------------------------------------------------------------
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// Режимы и опции diff/patch
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enum XDF_NEED_MINIMAL = 1 << 1; // минимальный алгоритм различий
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enum XDL_PATCH_NORMAL = '-'; // обычный патч
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enum XDL_PATCH_REVERSE = '+'; // обратный патч
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enum XDL_PATCH_MODEMASK = (1 << 8) - 1; // маска для режима патча
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enum XDL_PATCH_IGNOREBSPACE = 1 << 8; // игнорировать пробелы при сравнении
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// Флаги для mmfile (memory mapped file)
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enum XDL_MMB_READONLY = 1 << 0; // доступ только для чтения
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enum XDL_MMF_ATOMIC = 1 << 0; // атомарный доступ к файлу в памяти
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// Операции бинарного diff
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enum XDL_BDOP_INS = 1; // вставка
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enum XDL_BDOP_CPY = 2; // копирование
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enum XDL_BDOP_INSB = 3; // вставка блока
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// ------------------------------------------------------------
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// Структуры
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// ------------------------------------------------------------
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// Кастомный аллокатор памяти, который можно подставить в libxdiff
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struct memallocator_t
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{
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void* priv; // приватный указатель пользователя
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void* function(void*, uint) malloc; // функция выделения памяти
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void function(void*, void*) free; // функция освобождения памяти
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void* function(void*, void*, uint) realloc; // функция перераспределения памяти
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}
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// Блок памяти, используемый внутри mmfile
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struct mmblock_t
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{
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mmblock_t* next; // следующий блок
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ulong flags; // флаги блока
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long size; // размер данных
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long bsize; // размер блока
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char* ptr; // указатель на данные
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}
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// "Файл" в памяти, который хранит список блоков
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struct mmfile_t
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{
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ulong flags; // флаги файла
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mmblock_t* head; // первый блок
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mmblock_t* tail; // последний блок
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long bsize; // размер блока по умолчанию
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long fsize; // общий размер файла
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long rpos; // текущая позиция чтения
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mmblock_t* rcur; // блок для чтения
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mmblock_t* wcur; // блок для записи
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}
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// Буфер данных (указатель + длина)
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struct mmbuffer_t
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{
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char* ptr; // данные
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long size; // размер буфера
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}
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// Параметры алгоритма diff
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struct xpparam_t
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{
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ulong flags; // флаги diff
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}
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// Callback для вывода данных (например, печать патча)
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struct xdemitcb_t
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{
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void* priv; // приватный указатель
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int function(void*, mmbuffer_t*, int) outf; // функция вывода
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}
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// Конфигурация вывода diff
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struct xdemitconf_t
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{
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long ctxlen; // длина контекста (кол-во строк вокруг изменений)
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}
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// Параметры бинарного diff
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struct bdiffparam_t
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{
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long bsize; // размер блока
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}
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// ------------------------------------------------------------
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// Функции из libxdiff
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// ------------------------------------------------------------
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// Установка пользовательского аллокатора
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int xdl_set_allocator(memallocator_t* malt);
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// Врапперы для malloc/free/realloc из libxdiff
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void* xdl_malloc(uint size);
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void xdl_free(void* ptr);
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void* xdl_realloc(void* ptr, uint size);
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// Работа с mmfile (инициализация, освобождение, чтение/запись и т.д.)
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int xdl_init_mmfile(mmfile_t* mmf, long bsize, ulong flags);
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void xdl_free_mmfile(mmfile_t* mmf);
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int xdl_mmfile_iscompact(mmfile_t* mmf);
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int xdl_seek_mmfile(mmfile_t* mmf, long off);
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long xdl_read_mmfile(mmfile_t* mmf, void* data, long size);
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long xdl_write_mmfile(mmfile_t* mmf, const(void)* data, long size);
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long xdl_writem_mmfile(mmfile_t* mmf, mmbuffer_t* mb, int nbuf);
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void* xdl_mmfile_writeallocate(mmfile_t* mmf, long size);
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long xdl_mmfile_ptradd(mmfile_t* mmf, char* ptr, long size, ulong flags);
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long xdl_copy_mmfile(mmfile_t* mmf, long size, xdemitcb_t* ecb);
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void* xdl_mmfile_first(mmfile_t* mmf, long* size);
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void* xdl_mmfile_next(mmfile_t* mmf, long* size);
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long xdl_mmfile_size(mmfile_t* mmf);
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int xdl_mmfile_cmp(mmfile_t* mmf1, mmfile_t* mmf2);
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int xdl_mmfile_compact(mmfile_t* mmfo, mmfile_t* mmfc, long bsize, ulong flags);
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// Основные операции diff/patch/merge
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int xdl_diff(mmfile_t* mf1, mmfile_t* mf2,
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const(xpparam_t)* xpp,
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const(xdemitconf_t)* xecfg,
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xdemitcb_t* ecb);
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int xdl_patch(mmfile_t* mf, mmfile_t* mfp, int mode,
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xdemitcb_t* ecb,
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xdemitcb_t* rjecb);
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int xdl_merge3(mmfile_t* mmfo, mmfile_t* mmf1, mmfile_t* mmf2,
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xdemitcb_t* ecb,
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xdemitcb_t* rjecb);
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// Бинарный diff и patch
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int xdl_bdiff_mb(mmbuffer_t* mmb1, mmbuffer_t* mmb2,
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const(bdiffparam_t)* bdp,
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xdemitcb_t* ecb);
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int xdl_bdiff(mmfile_t* mmf1, mmfile_t* mmf2,
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const(bdiffparam_t)* bdp,
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xdemitcb_t* ecb);
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int xdl_rabdiff_mb(mmbuffer_t* mmb1, mmbuffer_t* mmb2, xdemitcb_t* ecb);
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int xdl_rabdiff(mmfile_t* mmf1, mmfile_t* mmf2, xdemitcb_t* ecb);
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long xdl_bdiff_tgsize(mmfile_t* mmfp);
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int xdl_bpatch(mmfile_t* mmf, mmfile_t* mmfp, xdemitcb_t* ecb);
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int xdl_bpatch_multi(mmbuffer_t* base, mmbuffer_t* mbpch, int n,
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xdemitcb_t* ecb);
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