--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/leptonica/src/array_internal.h	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,135 @@
+/*====================================================================*
+ -  Copyright (C) 2001 Leptonica.  All rights reserved.
+ -
+ -  Redistribution and use in source and binary forms, with or without
+ -  modification, are permitted provided that the following conditions
+ -  are met:
+ -  1. Redistributions of source code must retain the above copyright
+ -     notice, this list of conditions and the following disclaimer.
+ -  2. Redistributions in binary form must reproduce the above
+ -     copyright notice, this list of conditions and the following
+ -     disclaimer in the documentation and/or other materials
+ -     provided with the distribution.
+ -
+ -  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ -  ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ -  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ -  A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL ANY
+ -  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ -  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ -  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ -  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ -  OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ -  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ -  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *====================================================================*/
+
+#ifndef  LEPTONICA_ARRAY_INTERNAL_H
+#define  LEPTONICA_ARRAY_INTERNAL_H
+
+/*!
+ * \file array_internal.h
+ *
+ * <pre>
+ *  Contains the following structs:
+ *      struct Numa          array of floats
+ *      struct Numaa
+ *      struct L_Dna         array of doubles
+ *      struct L_Dnaa
+ *      struct L_Dnahash
+ *      struct Sarray        array of C-strings
+ *      struct L_Bytea       array of bytes
+ *
+ *  This file can be #included after allheaders.h in source files that
+ *  require direct access to the internal data fields in these structs.
+ *
+ *  Here are the non-image-related arrays in leptonica:
+ *  * Numa, L_Dna, L_Ptra, Sarray:
+ *    These have most of the typical operations of vectors, such as add,
+ *    insert, remove and replace.
+ *  * Numaa, L_Dnaa, L_Ptraa:
+ *    These are arrays of float, double and generic pointer arrays.
+ *  * L_Bytea:
+ *    This is an array of bytes, analogous to a C++ string.
+ *  * L_Dnahash:
+ *    This is a simple hashing for integers, used in the jbig2 classifier.
+ * </pre>
+ */
+
+
+/*------------------------------------------------------------------------*
+ *                             Array Structs                              *
+ *------------------------------------------------------------------------*/
+/*! Numa version for serialization */
+#define  NUMA_VERSION_NUMBER     1
+
+    /*! Number array: an array of floats */
+struct Numa
+{
+    l_int32          nalloc;    /*!< size of allocated number array      */
+    l_int32          n;         /*!< number of numbers saved             */
+    l_atomic         refcount;  /*!< reference count (1 if no clones)    */
+    l_float32        startx;    /*!< x value assigned to array[0]        */
+    l_float32        delx;      /*!< change in x value as i --> i + 1    */
+    l_float32       *array;     /*!< number array                        */
+};
+
+    /*! Array of number arrays */
+struct Numaa
+{
+    l_int32          nalloc;    /*!< size of allocated ptr array          */
+    l_int32          n;         /*!< number of Numa saved                 */
+    struct Numa    **numa;      /*!< array of Numa                        */
+};
+
+/*! Dna version for serialization */
+#define  DNA_VERSION_NUMBER     1
+
+    /*! Double number array: an array of doubles */
+struct L_Dna
+{
+    l_int32          nalloc;    /*!< size of allocated number array      */
+    l_int32          n;         /*!< number of numbers saved             */
+    l_atomic         refcount;  /*!< reference count (1 if no clones)    */
+    l_float64        startx;    /*!< x value assigned to array[0]        */
+    l_float64        delx;      /*!< change in x value as i --> i + 1    */
+    l_float64       *array;     /*!< number array                        */
+};
+
+    /*! Array of double number arrays */
+struct L_Dnaa
+{
+    l_int32          nalloc;    /*!< size of allocated ptr array          */
+    l_int32          n;         /*!< number of L_Dna saved                */
+    struct L_Dna   **dna;       /*!< array of L_Dna                       */
+};
+
+struct L_DnaHash
+{
+    l_int32          nbuckets;
+    l_int32          initsize;   /*!< initial size of each dna that is made  */
+    struct L_Dna   **dna;        /*!< array of L_Dna                       */
+};
+
+/*! Sarray version for serialization */
+#define  SARRAY_VERSION_NUMBER     1
+
+    /*! String array: an array of C strings */
+struct Sarray
+{
+    l_int32          nalloc;    /*!< size of allocated ptr array         */
+    l_int32          n;         /*!< number of strings allocated         */
+    l_atomic         refcount;  /*!< reference count (1 if no clones)    */
+    char           **array;     /*!< string array                        */
+};
+
+    /*! Byte array (analogous to C++ "string") */
+struct L_Bytea
+{
+    size_t           nalloc;    /*!< number of bytes allocated in data array  */
+    size_t           size;      /*!< number of bytes presently used           */
+    l_atomic         refcount;  /*!< reference count (1 if no clones)         */
+    l_uint8         *data;      /*!< data array                               */
+};
+
+#endif  /* LEPTONICA_ARRAY_INTERNAL_H */