# HG changeset patch
# User Mike Becker <universe@uap-core.de>
# Date 1479479265 -3600
# Node ID bf19378aed5874a217053a1a2c780a96ded2b8ff
# Parent  d7c4ba50b7d8422bc0515591e8b4b71b1ed71a64
updates UCX to version 0.11

diff -r d7c4ba50b7d8 -r bf19378aed58 ucx/Makefile
--- a/ucx/Makefile	Fri Nov 18 13:39:20 2016 +0100
+++ b/ucx/Makefile	Fri Nov 18 15:27:45 2016 +0100
@@ -1,7 +1,7 @@
 #
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 #
-# Copyright 2015 Olaf Wintermann. All rights reserved.
+# Copyright 2016 Olaf Wintermann. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are met:
@@ -32,15 +32,15 @@
 SRC  = utils.c
 SRC += list.c
 SRC += map.c
+SRC += avl.c
 SRC += properties.c
 SRC += mempool.c
 SRC += string.c
 SRC += test.c
 SRC += allocator.c
+SRC += logging.c
 SRC += buffer.c
-SRC += logging.c
 SRC += stack.c
-SRC += avl.c
 
 OBJ = $(SRC:%.c=../build/ucx/%$(OBJ_EXT))
 
diff -r d7c4ba50b7d8 -r bf19378aed58 ucx/allocator.c
--- a/ucx/allocator.c	Fri Nov 18 13:39:20 2016 +0100
+++ b/ucx/allocator.c	Fri Nov 18 15:27:45 2016 +0100
@@ -1,7 +1,7 @@
 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
- * Copyright 2015 Olaf Wintermann. All rights reserved.
+ * Copyright 2016 Olaf Wintermann. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
diff -r d7c4ba50b7d8 -r bf19378aed58 ucx/allocator.h
--- a/ucx/allocator.h	Fri Nov 18 13:39:20 2016 +0100
+++ b/ucx/allocator.h	Fri Nov 18 15:27:45 2016 +0100
@@ -1,7 +1,7 @@
 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
- * Copyright 2015 Olaf Wintermann. All rights reserved.
+ * Copyright 2016 Olaf Wintermann. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -28,7 +28,7 @@
 /**
  * Allocator for custom memory management.
  * 
- * An UCX allocator consists of a pointer to the memory area / pool and four
+ * A UCX allocator consists of a pointer to the memory area / pool and four
  * function pointers to memory management functions operating on this memory
  * area / pool. These functions shall behave equivalent to the standard libc
  * functions <code>malloc(), calloc(), realloc()</code> and <code>free()</code>.
@@ -38,7 +38,7 @@
  * memory area / pool as first argument.
  * 
  * As the pointer to the memory area / pool can be arbitrarily chosen, any data
- * can be provided to the memory management functions. An UcxMempool is just
+ * can be provided to the memory management functions. A UcxMempool is just
  * one example.
  * 
  * @see mempool.h
@@ -116,7 +116,7 @@
  * management functions. Use this function to get a pointer to a globally
  * available allocator. You may also define an own UcxAllocator by assigning
  * #UCX_ALLOCATOR_DEFAULT to a variable and pass the address of this variable
- * to any function that takes an UcxAllocator as argument. Note that using
+ * to any function that takes a UcxAllocator as argument. Note that using
  * this function is the recommended way of passing a default allocator, thus
  * it never runs out of scope.
  * 
diff -r d7c4ba50b7d8 -r bf19378aed58 ucx/avl.c
--- a/ucx/avl.c	Fri Nov 18 13:39:20 2016 +0100
+++ b/ucx/avl.c	Fri Nov 18 15:27:45 2016 +0100
@@ -1,7 +1,7 @@
 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
- * Copyright 2015 Olaf Wintermann. All rights reserved.
+ * Copyright 2016 Olaf Wintermann. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -29,6 +29,8 @@
 #include "avl.h"
 
 #define ptrcast(ptr) ((void*)(ptr))
+#define alloc_tree(al) (UcxAVLTree*) almalloc((al), sizeof(UcxAVLTree))
+#define alloc_node(al) (UcxAVLNode*) almalloc((al), sizeof(UcxAVLNode))
 
 static void ucx_avl_connect(UcxAVLTree *tree,
         UcxAVLNode *node, UcxAVLNode *child, intptr_t nullkey) {
@@ -107,7 +109,7 @@
 }
 
 UcxAVLTree *ucx_avl_new_a(cmp_func cmpfunc, UcxAllocator *allocator) {
-    UcxAVLTree *tree = almalloc(allocator, sizeof(UcxAVLTree));
+    UcxAVLTree* tree = alloc_tree(allocator);
     if (tree) {
         tree->allocator = allocator;
         tree->cmpfunc = cmpfunc;
@@ -167,7 +169,7 @@
         }
 
         if (cmpresult) {
-            UcxAVLNode *e = almalloc(tree->allocator, sizeof(UcxAVLNode));
+            UcxAVLNode* e = alloc_node(tree->allocator);
             if (e) {
                 e->key = key; e->value = value; e->height = 1;
                 e->parent = e->left = e->right = NULL;
@@ -185,7 +187,7 @@
             return 0;
         }
     } else {
-        tree->root = almalloc(tree->allocator, sizeof(UcxAVLNode));
+        tree->root = alloc_node(tree->allocator);
         if (tree->root) {
             tree->root->key = key; tree->root->value = value;
             tree->root->height = 1;
diff -r d7c4ba50b7d8 -r bf19378aed58 ucx/avl.h
--- a/ucx/avl.h	Fri Nov 18 13:39:20 2016 +0100
+++ b/ucx/avl.h	Fri Nov 18 15:27:45 2016 +0100
@@ -1,7 +1,7 @@
 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
- * Copyright 2015 Olaf Wintermann. All rights reserved.
+ * Copyright 2016 Olaf Wintermann. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -44,7 +44,7 @@
 
 #include "ucx.h"
 #include "allocator.h"
-#include <stdint.h>
+#include <inttypes.h>
 
 #ifdef	__cplusplus
 extern "C" {
@@ -134,7 +134,7 @@
 UcxAVLTree *ucx_avl_new_a(cmp_func cmpfunc, UcxAllocator *allocator);
 
 /**
- * Destroys an UcxAVLTree.
+ * Destroys a UcxAVLTree.
  * @param tree the tree to destroy
  */
 void ucx_avl_free(UcxAVLTree *tree);
diff -r d7c4ba50b7d8 -r bf19378aed58 ucx/buffer.c
--- a/ucx/buffer.c	Fri Nov 18 13:39:20 2016 +0100
+++ b/ucx/buffer.c	Fri Nov 18 15:27:45 2016 +0100
@@ -1,7 +1,7 @@
 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
- * Copyright 2015 Olaf Wintermann. All rights reserved.
+ * Copyright 2016 Olaf Wintermann. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
diff -r d7c4ba50b7d8 -r bf19378aed58 ucx/buffer.h
--- a/ucx/buffer.h	Fri Nov 18 13:39:20 2016 +0100
+++ b/ucx/buffer.h	Fri Nov 18 15:27:45 2016 +0100
@@ -1,7 +1,7 @@
 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
- * Copyright 2015 Olaf Wintermann. All rights reserved.
+ * Copyright 2016 Olaf Wintermann. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -197,9 +197,9 @@
 int ucx_buffer_extend(UcxBuffer *buffer, size_t additional_bytes);
 
 /**
- * Writes data to an UcxBuffer.
+ * Writes data to a UcxBuffer.
  * 
- * The position of the buffer is increased by the number of bytes read.
+ * The position of the buffer is increased by the number of bytes written.
  * 
  * @param ptr a pointer to the memory area containing the bytes to be written
  * @param size the length of one element
@@ -211,7 +211,7 @@
         UcxBuffer *buffer);
 
 /**
- * Reads data from an UcxBuffer.
+ * Reads data from a UcxBuffer.
  * 
  * The position of the buffer is increased by the number of bytes read.
  * 
diff -r d7c4ba50b7d8 -r bf19378aed58 ucx/list.c
--- a/ucx/list.c	Fri Nov 18 13:39:20 2016 +0100
+++ b/ucx/list.c	Fri Nov 18 15:27:45 2016 +0100
@@ -1,7 +1,7 @@
 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
- * Copyright 2015 Olaf Wintermann. All rights reserved.
+ * Copyright 2016 Olaf Wintermann. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -76,6 +76,13 @@
     }
 }
 
+void ucx_list_free_content(UcxList* list, ucx_destructor destr) {
+    while (list != NULL) {
+        destr(list->data);
+        list = list->next;
+    }
+}
+
 UcxList *ucx_list_append(UcxList *l, void *data)  {
     return ucx_list_append_a(ucx_default_allocator(), l, data);
 }
@@ -99,6 +106,41 @@
     }
 }
 
+UcxList *ucx_list_append_once(UcxList *l, void *data,
+        cmp_func cmpfnc, void *cmpdata) {
+    return ucx_list_append_once_a(ucx_default_allocator(), l,
+            data, cmpfnc, cmpdata);
+}
+
+UcxList *ucx_list_append_once_a(UcxAllocator *alloc, UcxList *l, void *data,
+        cmp_func cmpfnc, void *cmpdata) {
+
+    UcxList *last = NULL;
+    {
+        UcxList *e = l;
+        while (e) {
+            if (cmpfnc(e->data, data, cmpdata) == 0) {
+                return l;
+            }
+            last = e;
+            e = e->next;
+        }
+    }
+    
+    UcxList *nl = ucx_list_append_a(alloc, NULL, data);
+    if (!nl) {
+        return NULL;
+    }
+
+    if (last == NULL) {
+        return nl;
+    } else {
+        nl->prev = last;
+        last->next = nl;
+        return l;
+    }
+}
+
 UcxList *ucx_list_prepend(UcxList *l, void *data) {
     return ucx_list_prepend_a(ucx_default_allocator(), l, data);
 }
@@ -117,6 +159,40 @@
     return nl;
 }
 
+UcxList *ucx_list_prepend_once(UcxList *l, void *data,
+        cmp_func cmpfnc, void* cmpdata) {
+    return ucx_list_prepend_once_a(ucx_default_allocator(), l,
+            data, cmpfnc, cmpdata);
+}
+
+UcxList *ucx_list_prepend_once_a(UcxAllocator *alloc, UcxList *l, void *data,
+        cmp_func cmpfnc, void *cmpdata) {
+    
+    if (l) {
+        int found = 0;
+        UcxList *first;
+        {
+            UcxList *e = l;
+            while (e) {
+                found |= (cmpfnc(e->data, data, cmpdata) == 0);
+                first = e;
+                e = e->prev;
+            }
+        }
+
+        if (found) {
+            return first;
+        } else {
+            UcxList *nl = ucx_list_append_a(alloc, NULL, data);
+            nl->next = first;
+            first->prev = nl;
+            return nl;
+        }
+    } else {
+        return ucx_list_append_a(alloc, NULL, data);
+    }
+}
+
 UcxList *ucx_list_concat(UcxList *l1, UcxList *l2) {
     if (l1) {
         UcxList *last = ucx_list_last(l1);
diff -r d7c4ba50b7d8 -r bf19378aed58 ucx/list.h
--- a/ucx/list.h	Fri Nov 18 13:39:20 2016 +0100
+++ b/ucx/list.h	Fri Nov 18 15:27:45 2016 +0100
@@ -1,7 +1,7 @@
 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
- * Copyright 2015 Olaf Wintermann. All rights reserved.
+ * Copyright 2016 Olaf Wintermann. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -46,13 +46,13 @@
 /**
  * Loop statement for UCX lists.
  * 
- * The first argument is a pointer to the list. In most cases this will be the
+ * The first argument is the name of the iteration variable. The scope of
+ * this variable is limited to the <code>UCX_FOREACH</code> statement.
+ * 
+ * The second argument is a pointer to the list. In most cases this will be the
  * pointer to the first element of the list, but it may also be an arbitrary
  * element of the list. The iteration will then start with that element.
  * 
- * The second argument is the name of the iteration variable. The scope of
- * this variable is limited to the <code>UCX_FOREACH</code> statement.
- * 
  * @param list The first element of the list
  * @param elem The variable name of the element
  */
@@ -102,13 +102,12 @@
 UcxList *ucx_list_clone(UcxList *list, copy_func cpyfnc, void* data);
 
 /**
- * Creates an element-wise copy of a list using an UcxAllocator.
+ * Creates an element-wise copy of a list using a UcxAllocator.
  * 
  * See ucx_list_clone() for details.
  * 
- * Keep in mind, that you might want to pass the allocator as an (part of the)
- * argument for the <code>data</code> parameter, if you want the copy_func() to
- * make use of the allocator.
+ * You might want to pass the allocator via the <code>data</code> parameter,
+ * to access it within the copy function for making deep copies.
  * 
  * @param allocator the allocator to use
  * @param list the list to copy
@@ -146,17 +145,19 @@
  * Destroys the entire list.
  * 
  * The members of the list are not automatically freed, so ensure they are
- * otherwise referenced or a memory leak will occur.
+ * otherwise referenced or destroyed by ucx_list_free_contents().
+ * Otherwise, a memory leak is likely to occur.
  * 
  * <b>Caution:</b> the argument <b>MUST</b> denote an entire list (i.e. a call
  * to ucx_list_first() on the argument must return the argument itself)
  * 
  * @param list the list to free
+ * @see ucx_list_free_contents()
  */
 void ucx_list_free(UcxList *list);
 
 /**
- * Destroys the entire list using an UcxAllocator.
+ * Destroys the entire list using a UcxAllocator.
  * 
  * See ucx_list_free() for details.
  * 
@@ -167,6 +168,20 @@
 void ucx_list_free_a(UcxAllocator *allocator, UcxList *list);
 
 /**
+ * Destroys the contents of the specified list by calling the specified
+ * destructor on each of them.
+ * 
+ * Note, that the contents are not usable afterwards and the list should be
+ * destroyed with ucx_list_free().
+ * 
+ * @param list the list for which the contents shall be freed
+ * @param destr the destructor function (e.g. stdlib free())
+ * @see ucx_list_free()
+ */
+void ucx_list_free_content(UcxList* list, ucx_destructor destr);
+
+
+/**
  * Inserts an element at the end of the list.
  * 
  * This is generally an O(n) operation, as the end of the list is retrieved with
@@ -181,7 +196,7 @@
 UcxList *ucx_list_append(UcxList *list, void *data);
 
 /**
- * Inserts an element at the end of the list using an UcxAllocator.
+ * Inserts an element at the end of the list using a UcxAllocator.
  * 
  * See ucx_list_append() for details.
  * 
@@ -196,6 +211,41 @@
 UcxList *ucx_list_append_a(UcxAllocator *allocator, UcxList *list, void *data);
 
 /**
+ * Inserts an element at the end of the list, if it is not present in the list.
+ * 
+ * 
+ * @param list the list where to append the data, or <code>NULL</code> to
+ * create a new list
+ * @param data the data to insert
+ * @param cmpfnc the compare function
+ * @param cmpdata additional data for the compare function
+ * @return <code>list</code>, if it is not <code>NULL</code> or a pointer to
+ * the newly created list otherwise
+ * @see ucx_list_append()
+ */
+UcxList *ucx_list_append_once(UcxList *list, void *data,
+        cmp_func cmpfnc, void *cmpdata);
+
+/**
+ * Inserts an element at the end of the list, if it is not present in the list,
+ * using a UcxAllocator.
+ * 
+ * See ucx_list_append() for details.
+ * 
+ * @param allocator the allocator to use
+ * @param list the list where to append the data, or <code>NULL</code> to
+ * create a new list
+ * @param data the data to insert
+ * @param cmpfnc the compare function
+ * @param cmpdata additional data for the compare function
+ * @return <code>list</code>, if it is not <code>NULL</code> or a pointer to
+ * the newly created list otherwise
+ * @see ucx_list_append_a()
+ */
+UcxList *ucx_list_append_once_a(UcxAllocator *allocator,
+        UcxList *list, void *data, cmp_func cmpfnc, void *cmpdata);
+
+/**
  * Inserts an element at the beginning of the list.
  * 
  * You <i>should</i> overwrite the old list pointer by calling
@@ -212,7 +262,7 @@
 UcxList *ucx_list_prepend(UcxList *list, void *data);
 
 /**
- * Inserts an element at the beginning of the list using an UcxAllocator.
+ * Inserts an element at the beginning of the list using a UcxAllocator.
  * 
  * See ucx_list_prepend() for details.
  * 
@@ -226,6 +276,37 @@
 UcxList *ucx_list_prepend_a(UcxAllocator *allocator, UcxList *list, void *data);
 
 /**
+ * Inserts an element at the beginning of the list, if it is not present
+ * in the list.
+ * 
+ * @param list the list where to insert the data or <code>NULL</code> to create
+ * a new list
+ * @param data the data to insert
+ * @param cmpfnc the compare function
+ * @param cmpdata additional data for the compare function
+ * @return a pointer to the new list head
+ * @see ucx_list_prepend()
+ */
+UcxList *ucx_list_prepend_once(UcxList *list, void *data,
+        cmp_func cmpfnc, void *cmpdata);
+
+/**
+ * Inserts an element at the beginning of the list, if it is not present in
+ * the list, using a UcxAllocator.
+ * 
+ * @param allocator the allocator to use
+ * @param list the list where to insert the data or <code>NULL</code> to create
+ * a new list
+ * @param data the data to insert
+ * @param cmpfnc the compare function
+ * @param cmpdata additional data for the compare function
+ * @return a pointer to the new list head
+ * @see ucx_list_prepend_a()
+ */
+UcxList *ucx_list_prepend_once_a(UcxAllocator *allocator,
+        UcxList *list, void *data, cmp_func cmpfnc, void *cmpdata);
+
+/**
  * Concatenates two lists.
  * 
  * Either of the two arguments may be <code>NULL</code>.
@@ -327,7 +408,7 @@
 int ucx_list_contains(UcxList *list, void *elem, cmp_func cmpfnc, void *data);
 
 /**
- * Sorts an UcxList with natural merge sort.
+ * Sorts a UcxList with natural merge sort.
  * 
  * This function uses O(n) additional temporary memory for merge operations
  * that is automatically freed after each merge.
@@ -357,7 +438,7 @@
 UcxList *ucx_list_remove(UcxList *list, UcxList *element);
 
 /**
- * Removes an element from the list using an UcxAllocator.
+ * Removes an element from the list using a UcxAllocator.
  * 
  * See ucx_list_remove() for details.
  * 
diff -r d7c4ba50b7d8 -r bf19378aed58 ucx/logging.c
--- a/ucx/logging.c	Fri Nov 18 13:39:20 2016 +0100
+++ b/ucx/logging.c	Fri Nov 18 15:27:45 2016 +0100
@@ -1,7 +1,7 @@
 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
- * Copyright 2015 Olaf Wintermann. All rights reserved.
+ * Copyright 2016 Olaf Wintermann. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
diff -r d7c4ba50b7d8 -r bf19378aed58 ucx/logging.h
--- a/ucx/logging.h	Fri Nov 18 13:39:20 2016 +0100
+++ b/ucx/logging.h	Fri Nov 18 15:27:45 2016 +0100
@@ -1,7 +1,7 @@
 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
- * Copyright 2015 Olaf Wintermann. All rights reserved.
+ * Copyright 2016 Olaf Wintermann. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
diff -r d7c4ba50b7d8 -r bf19378aed58 ucx/map.c
--- a/ucx/map.c	Fri Nov 18 13:39:20 2016 +0100
+++ b/ucx/map.c	Fri Nov 18 15:27:45 2016 +0100
@@ -1,7 +1,7 @@
 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
- * Copyright 2015 Olaf Wintermann. All rights reserved.
+ * Copyright 2016 Olaf Wintermann. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
diff -r d7c4ba50b7d8 -r bf19378aed58 ucx/map.h
--- a/ucx/map.h	Fri Nov 18 13:39:20 2016 +0100
+++ b/ucx/map.h	Fri Nov 18 15:27:45 2016 +0100
@@ -1,7 +1,7 @@
 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
- * Copyright 2015 Olaf Wintermann. All rights reserved.
+ * Copyright 2016 Olaf Wintermann. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -59,7 +59,7 @@
  * 
  * @param key the variable name for the key
  * @param value the variable name for the value
- * @param iter an UcxMapIterator
+ * @param iter a UcxMapIterator
  * @see ucx_map_iterator()
  */
 #define UCX_MAP_FOREACH(key,value,iter) \
@@ -68,13 +68,13 @@
 /** Type for the UCX map. @see UcxMap */
 typedef struct UcxMap          UcxMap;
 
-/** Type for a key of an UcxMap. @see UcxKey */
+/** Type for a key of a UcxMap. @see UcxKey */
 typedef struct UcxKey          UcxKey;
 
-/** Type for an element of an UcxMap. @see UcxMapElement */
+/** Type for an element of a UcxMap. @see UcxMapElement */
 typedef struct UcxMapElement   UcxMapElement;
 
-/** Type for an iterator over an UcxMap. @see UcxMapIterator */
+/** Type for an iterator over a UcxMap. @see UcxMapIterator */
 typedef struct UcxMapIterator  UcxMapIterator;
 
 /** Structure for the UCX map. */
@@ -89,7 +89,7 @@
     size_t        count;
 };
 
-/** Structure for a key of an UcxMap. */
+/** Structure for a key of a UcxMap. */
 struct UcxKey {
     /** The key data. */
     void   *data;
@@ -99,7 +99,7 @@
     int    hash;
 };
 
-/** Structure for an element of an UcxMap. */
+/** Structure for an element of a UcxMap. */
 struct UcxMapElement {
     /** The value data. */
     void          *data;
@@ -111,7 +111,7 @@
     UcxKey        key;
 };
 
-/** Structure for an iterator over an UcxMap. */
+/** Structure for an iterator over a UcxMap. */
 struct UcxMapIterator {
     /** The map to iterate over. */
     UcxMap        *map;
@@ -136,7 +136,7 @@
 UcxMap *ucx_map_new(size_t size);
 
 /**
- * Creates a new hash map with the specified size using an UcxAllocator.
+ * Creates a new hash map with the specified size using a UcxAllocator.
  * @param allocator the allocator to use
  * @param size the size of the hash map
  * @return a pointer to the new hash map
@@ -357,13 +357,13 @@
     ucx_map_remove(map, ucx_key((void*)&key, sizeof(key)))
 
 /**
- * Creates an UcxKey based on the given data.
+ * Creates a UcxKey based on the given data.
  * 
  * This function implicitly computes the hash.
  * 
  * @param data the data for the key
  * @param len the length of the data
- * @return an UcxKey with implicitly computed hash
+ * @return a UcxKey with implicitly computed hash
  * @see ucx_hash()
  */
 UcxKey ucx_key(void *data, size_t len);
@@ -380,14 +380,14 @@
 /**
  * Creates an iterator for a map.
  * 
- * <b>Note:</b> An UcxMapIterator iterates over all elements in all element
+ * <b>Note:</b> A UcxMapIterator iterates over all elements in all element
  * lists successively. Therefore the order highly depends on the key hashes and
  * may vary under different map sizes. So generally you may <b>NOT</b> rely on
  * the iteration order.
  * 
  * <b>Note:</b> The iterator is <b>NOT</b> initialized. You need to call
  * ucx_map_iter_next() at least once before accessing any information. However,
- * it is not recommended to access the fields of an UcxMapIterator directly.
+ * it is not recommended to access the fields of a UcxMapIterator directly.
  * 
  * @param map the map to create the iterator for
  * @return an iterator initialized on the first element of the
diff -r d7c4ba50b7d8 -r bf19378aed58 ucx/mempool.c
--- a/ucx/mempool.c	Fri Nov 18 13:39:20 2016 +0100
+++ b/ucx/mempool.c	Fri Nov 18 15:27:45 2016 +0100
@@ -1,7 +1,7 @@
 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
- * Copyright 2015 Olaf Wintermann. All rights reserved.
+ * Copyright 2016 Olaf Wintermann. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
diff -r d7c4ba50b7d8 -r bf19378aed58 ucx/mempool.h
--- a/ucx/mempool.h	Fri Nov 18 13:39:20 2016 +0100
+++ b/ucx/mempool.h	Fri Nov 18 15:27:45 2016 +0100
@@ -1,7 +1,7 @@
 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
- * Copyright 2015 Olaf Wintermann. All rights reserved.
+ * Copyright 2016 Olaf Wintermann. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -127,10 +127,8 @@
 /**
  * Reallocates pooled memory.
  * 
- * If the memory to be reallocated is not contained by the specified pool, this
- * function will possibly fail. In case the memory had to be moved to another
- * location, this function will print out a message to <code>stderr</code>
- * and exit the program with error code <code>EXIT_FAILURE</code>.
+ * If the memory to be reallocated is not contained by the specified pool, the
+ * behavior is undefined.
  * 
  * @param pool the memory pool
  * @param ptr a pointer to the memory that shall be reallocated
@@ -146,10 +144,8 @@
  * Before freeing the memory, the specified destructor function (if any)
  * is called.
  * 
- * If you specify memory, that is not pooled by the specified memory pool, this
- * is considered as a severe error and an error message is written to
- * <code>stderr</code> and the application is shut down with code
- * <code>EXIT_FAILURE</code>.
+ * If you specify memory, that is not pooled by the specified memory pool, the
+ * behavior is undefined.
  * 
  * @param pool the memory pool
  * @param ptr a pointer to the memory that shall be freed
@@ -180,7 +176,7 @@
  * pool is destroyed.
  * 
  * The only requirement for the specified memory is, that it <b>MUST</b> be
- * pooled memory by an UcxMempool or an element-compatible mempool. The pointer
+ * pooled memory by a UcxMempool or an element-compatible mempool. The pointer
  * to the destructor function is saved in a reserved area before the actual
  * memory.
  * 
diff -r d7c4ba50b7d8 -r bf19378aed58 ucx/properties.c
--- a/ucx/properties.c	Fri Nov 18 13:39:20 2016 +0100
+++ b/ucx/properties.c	Fri Nov 18 15:27:45 2016 +0100
@@ -1,7 +1,7 @@
 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
- * Copyright 2015 Olaf Wintermann. All rights reserved.
+ * Copyright 2016 Olaf Wintermann. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
diff -r d7c4ba50b7d8 -r bf19378aed58 ucx/properties.h
--- a/ucx/properties.h	Fri Nov 18 13:39:20 2016 +0100
+++ b/ucx/properties.h	Fri Nov 18 15:27:45 2016 +0100
@@ -1,7 +1,7 @@
 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
- * Copyright 2015 Olaf Wintermann. All rights reserved.
+ * Copyright 2016 Olaf Wintermann. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -127,7 +127,7 @@
 UcxProperties *ucx_properties_new();
 
 /**
- * Destroys an UcxProperties object.
+ * Destroys a UcxProperties object.
  * @param prop the UcxProperties object to destroy
  */
 void ucx_properties_free(UcxProperties *prop);
@@ -137,8 +137,8 @@
  * 
  * After calling this function, you may parse the data by calling
  * ucx_properties_next() until it returns 0. The function ucx_properties2map()
- * is a convenience function that performs these successive calls of
- * ucx_properties_next() within a while loop and puts the properties to a map.
+ * is a convenience function that reads as much data as possible by using this
+ * function.
  * 
  * 
  * @param prop the UcxProperties object
@@ -170,7 +170,7 @@
 int ucx_properties_next(UcxProperties *prop, sstr_t *name, sstr_t *value);
 
 /**
- * Retrieves all available key/value-pairs and puts them into an UcxMap.
+ * Retrieves all available key/value-pairs and puts them into a UcxMap.
  * 
  * This is done by successive calls to ucx_properties_next() until no more
  * key/value-pairs can be retrieved. 
@@ -183,13 +183,11 @@
 int ucx_properties2map(UcxProperties *prop, UcxMap *map);
 
 /**
- * Loads a properties file to an UcxMap.
+ * Loads a properties file to a UcxMap.
  * 
- * This is a convenience function that reads chunks of 1 KB from an input
+ * This is a convenience function that reads data from an input
  * stream until the end of the stream is reached.
  * 
- * An UcxProperties object is implicitly created and destroyed.
- * 
  * @param map the map object to write the key/value-pairs to
  * @param file the <code>FILE*</code> stream to read from
  * @return 0 on success, or a non-zero value on error
@@ -200,7 +198,7 @@
 int ucx_properties_load(UcxMap *map, FILE *file);
 
 /**
- * Stores an UcxMap to a file.
+ * Stores a UcxMap to a file.
  * 
  * The key/value-pairs are written by using the following format:
  * 
diff -r d7c4ba50b7d8 -r bf19378aed58 ucx/stack.c
--- a/ucx/stack.c	Fri Nov 18 13:39:20 2016 +0100
+++ b/ucx/stack.c	Fri Nov 18 15:27:45 2016 +0100
@@ -1,7 +1,7 @@
 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
- * Copyright 2015 Olaf Wintermann. All rights reserved.
+ * Copyright 2016 Olaf Wintermann. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
diff -r d7c4ba50b7d8 -r bf19378aed58 ucx/stack.h
--- a/ucx/stack.h	Fri Nov 18 13:39:20 2016 +0100
+++ b/ucx/stack.h	Fri Nov 18 15:27:45 2016 +0100
@@ -1,7 +1,7 @@
 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
- * Copyright 2015 Olaf Wintermann. All rights reserved.
+ * Copyright 2016 Olaf Wintermann. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -39,7 +39,6 @@
 #define	UCX_STACK_H
 
 #include "ucx.h"
-#include <stdint.h>
 #include "allocator.h"
 
 #ifdef	__cplusplus
@@ -179,7 +178,7 @@
  * @see ucx_stack_free
  * @see ucx_stack_popn
  */
-#define ucx_stack_pop(stack, dest) ucx_stack_popn(stack, dest, SIZE_MAX)
+#define ucx_stack_pop(stack, dest) ucx_stack_popn(stack, dest, (size_t)-1)
 
 /**
  * Removes the top most element from the stack and copies the content to <code>
diff -r d7c4ba50b7d8 -r bf19378aed58 ucx/string.c
--- a/ucx/string.c	Fri Nov 18 13:39:20 2016 +0100
+++ b/ucx/string.c	Fri Nov 18 15:27:45 2016 +0100
@@ -1,7 +1,7 @@
 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
- * Copyright 2015 Olaf Wintermann. All rights reserved.
+ * Copyright 2016 Olaf Wintermann. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -175,6 +175,24 @@
     return n;
 }
 
+sstr_t sstrstr(sstr_t string, sstr_t match) {
+    if (match.length == 0) {
+        return string;
+    }
+    
+    for (size_t i = 0 ; i < string.length ; i++) {
+        sstr_t substr = sstrsubs(string, i);
+        if (sstrprefix(substr, match)) {
+            return substr;
+        }
+    }
+    
+    sstr_t emptystr;
+    emptystr.length = 0;
+    emptystr.ptr = NULL;
+    return emptystr;
+}
+
 sstr_t* sstrsplit(sstr_t s, sstr_t d, ssize_t *n) {
     return sstrsplit_a(ucx_default_allocator(), s, d, n);
 }
@@ -201,23 +219,13 @@
     }
 
     for (size_t i = 0 ; i < s.length ; i++) {
-        if (sv.ptr[i] == d.ptr[0]) {
-            _Bool match = 1;
-            for (size_t j = 1 ; j < d.length ; j++) {
-                if (j+i < s.length) {
-                    match &= (sv.ptr[i+j] == d.ptr[j]);
-                } else {
-                    match = 0;
-                    break;
-                }
+        sstr_t substr = sstrsubs(sv, i);
+        if (sstrprefix(substr, d)) {
+            (*n)++;
+            for (size_t j = 0 ; j < d.length ; j++) {
+                sv.ptr[i+j] = 0;
             }
-            if (match) {
-                (*n)++;
-                for (size_t j = 0 ; j < d.length ; j++) {
-                    sv.ptr[i+j] = 0;
-                }
-                i += d.length;
-            }
+            i += d.length - 1; // -1, because the loop will do a i++
         }
         if ((*n) == nmax) break;
     }
diff -r d7c4ba50b7d8 -r bf19378aed58 ucx/string.h
--- a/ucx/string.h	Fri Nov 18 13:39:20 2016 +0100
+++ b/ucx/string.h	Fri Nov 18 15:27:45 2016 +0100
@@ -1,7 +1,7 @@
 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
- * Copyright 2015 Olaf Wintermann. All rights reserved.
+ * Copyright 2016 Olaf Wintermann. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -137,7 +137,7 @@
 sstr_t sstrcat(size_t count, sstr_t s1, sstr_t s2, ...);
 
 /**
- * Concatenates two or more strings using an UcxAllocator.
+ * Concatenates two or more strings using a UcxAllocator.
  * 
  * See sstrcat() for details.
  *
@@ -214,6 +214,23 @@
 sstr_t sstrrchr(sstr_t string, int chr);
 
 /**
+ * Returns a substring starting at the location of the first occurrence of the
+ * specified string.
+ * 
+ * If the string does not contain the other string, an empty string is returned.
+ * 
+ * If <code>match</code> is an empty string, the complete <code>string</code> is
+ * returned.
+ * 
+ * @param string the string to be scanned
+ * @param match  string containing the sequence of characters to match
+ * @return       a substring starting at the first occurrence of
+ *               <code>match</code>, or an empty string, if the sequence is not
+ *               present in <code>string</code>
+ */
+sstr_t sstrstr(sstr_t string, sstr_t match);
+
+/**
  * Splits a string into parts by using a delimiter string.
  * 
  * This function will return <code>NULL</code>, if one of the following happens:
@@ -260,7 +277,7 @@
 sstr_t* sstrsplit(sstr_t string, sstr_t delim, ssize_t *count);
 
 /**
- * Performing sstrsplit() using an UcxAllocator.
+ * Performing sstrsplit() using a UcxAllocator.
  * 
  * <i>Read the description of sstrsplit() for details.</i>
  * 
@@ -331,7 +348,7 @@
 sstr_t sstrdup(sstr_t string);
 
 /**
- * Creates a duplicate of the specified string using an UcxAllocator.
+ * Creates a duplicate of the specified string using a UcxAllocator.
  * 
  * The new sstr_t will contain a copy allocated by the allocators
  * ucx_allocator_malloc function. So it is implementation depended, whether the
@@ -341,7 +358,7 @@
  * The sstr_t.ptr of the return value will <i>always</i> be <code>NULL</code>-
  * terminated.
  * 
- * @param allocator a valid instance of an UcxAllocator
+ * @param allocator a valid instance of a UcxAllocator
  * @param string the string to duplicate
  * @return a duplicate of the string
  * @see sstrdup()
diff -r d7c4ba50b7d8 -r bf19378aed58 ucx/test.c
--- a/ucx/test.c	Fri Nov 18 13:39:20 2016 +0100
+++ b/ucx/test.c	Fri Nov 18 15:27:45 2016 +0100
@@ -1,7 +1,7 @@
 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
- * Copyright 2015 Olaf Wintermann. All rights reserved.
+ * Copyright 2016 Olaf Wintermann. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
diff -r d7c4ba50b7d8 -r bf19378aed58 ucx/test.h
--- a/ucx/test.h	Fri Nov 18 13:39:20 2016 +0100
+++ b/ucx/test.h	Fri Nov 18 15:27:45 2016 +0100
@@ -1,7 +1,7 @@
 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
- * Copyright 2015 Olaf Wintermann. All rights reserved.
+ * Copyright 2016 Olaf Wintermann. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -160,7 +160,7 @@
 /**
  * Macro for a #UcxTest function header.
  * 
- * Use this macro to declare and/or define an #UcxTest function.
+ * Use this macro to declare and/or define a #UcxTest function.
  * 
  * @param name the name of the test function
  */
@@ -196,7 +196,7 @@
 /**
  * Macro for a test subroutine function header.
  * 
- * Use this to declare and/or define an subroutine that can be called by using
+ * Use this to declare and/or define a subroutine that can be called by using
  * UCX_TEST_CALL_SUBROUTINE().
  * 
  * @param name the name of the subroutine
diff -r d7c4ba50b7d8 -r bf19378aed58 ucx/ucx.c
--- a/ucx/ucx.c	Fri Nov 18 13:39:20 2016 +0100
+++ b/ucx/ucx.c	Fri Nov 18 15:27:45 2016 +0100
@@ -9,7 +9,7 @@
  * 
  * <h2>LICENCE</h2>
  * 
- * Copyright 2015 Olaf Wintermann. All rights reserved.
+ * Copyright 2016 Olaf Wintermann. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
diff -r d7c4ba50b7d8 -r bf19378aed58 ucx/ucx.h
--- a/ucx/ucx.h	Fri Nov 18 13:39:20 2016 +0100
+++ b/ucx/ucx.h	Fri Nov 18 15:27:45 2016 +0100
@@ -1,7 +1,7 @@
 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
- * Copyright 2015 Olaf Wintermann. All rights reserved.
+ * Copyright 2016 Olaf Wintermann. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -40,10 +40,7 @@
 #define UCX_VERSION_MAJOR   0
 
 /** Minor UCX version as integer constant. */
-#define UCX_VERSION_MINOR   9
-
-/** The UCX version in format [major].[minor] */
-#define UCX_VERSION UCX_VERSION_MAJOR.UCX_VERSION_MINOR
+#define UCX_VERSION_MINOR   11
 
 #include <stdlib.h>
 
diff -r d7c4ba50b7d8 -r bf19378aed58 ucx/utils.c
--- a/ucx/utils.c	Fri Nov 18 13:39:20 2016 +0100
+++ b/ucx/utils.c	Fri Nov 18 15:27:45 2016 +0100
@@ -1,7 +1,7 @@
 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
- * Copyright 2015 Olaf Wintermann. All rights reserved.
+ * Copyright 2016 Olaf Wintermann. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -48,7 +48,7 @@
     return cpy;
 }
 
-size_t ucx_stream_copy(void *src, void *dest, read_func readfnc,
+size_t ucx_stream_bncopy(void *src, void *dest, read_func readfnc,
         write_func writefnc, char* buf, size_t bufsize, size_t n) {
     if(n == 0 || bufsize == 0) {
         return 0;
diff -r d7c4ba50b7d8 -r bf19378aed58 ucx/utils.h
--- a/ucx/utils.h	Fri Nov 18 13:39:20 2016 +0100
+++ b/ucx/utils.h	Fri Nov 18 15:27:45 2016 +0100
@@ -1,7 +1,7 @@
 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
- * Copyright 2015 Olaf Wintermann. All rights reserved.
+ * Copyright 2016 Olaf Wintermann. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -45,11 +45,16 @@
 #include "ucx.h"
 #include "string.h"
 #include "allocator.h"
-#include <stdint.h>
+#include <inttypes.h>
 #include <string.h>
 #include <stdarg.h>
 
 /**
+ * Default buffer size for ucx_stream_copy() and ucx_stream_ncopy().
+ */
+#define UCX_STREAM_COPY_BUFSIZE 4096
+
+/**
  * Copies a string.
  * @param s the string to copy
  * @param data omitted
@@ -82,23 +87,26 @@
  * @param n the maximum number of bytes that shall be copied
  * @return the total number of bytes copied
   */
-size_t ucx_stream_copy(void *src, void *dest, read_func rfnc, write_func wfnc,
+size_t ucx_stream_bncopy(void *src, void *dest, read_func rfnc, write_func wfnc,
         char* buf, size_t bufsize, size_t n);
 
 /**
- * Shorthand for ucx_stream_copy using the default copy buffer.
+ * Shorthand for an unbounded ucx_stream_bncopy call using a default buffer.
  * 
  * @param src the source stream
  * @param dest the destination stream
  * @param rfnc the read function
  * @param wfnc the write function
  * @return total number of bytes copied
+ * 
+ * @see #UCX_STREAM_COPY_BUFSIZE
  */
-#define ucx_stream_hcopy(src,dest,rfnc,wfnc) ucx_stream_copy(\
-        src, dest, (read_func)rfnc, (write_func)wfnc, NULL, 0x100, SIZE_MAX)
+#define ucx_stream_copy(src,dest,rfnc,wfnc) ucx_stream_bncopy(\
+        src, dest, (read_func)rfnc, (write_func)wfnc, \
+        NULL, UCX_STREAM_COPY_BUFSIZE, (size_t)-1)
 
 /**
- * Shorthand for ucx_stream_copy using the default copy buffer and a copy limit.
+ * Shorthand for ucx_stream_bncopy using a default copy buffer.
  * 
  * @param src the source stream
  * @param dest the destination stream
@@ -107,8 +115,27 @@
  * @param n maximum number of bytes that shall be copied
  * @return total number of bytes copied
  */
-#define ucx_stream_ncopy(src,dest,rfnc,wfnc, n) ucx_stream_copy(\
-        src, dest, (read_func)rfnc, (write_func)wfnc, NULL, 0x100, n)
+#define ucx_stream_ncopy(src,dest,rfnc,wfnc, n) ucx_stream_bncopy(\
+        src, dest, (read_func)rfnc, (write_func)wfnc, \
+        NULL, UCX_STREAM_COPY_BUFSIZE, n)
+
+/**
+ * Shorthand for an unbounded ucx_stream_bncopy call using the specified buffer.
+ * 
+ * @param src the source stream
+ * @param dest the destination stream
+ * @param rfnc the read function
+ * @param wfnc the write function
+ * @param buf a pointer to the copy buffer or <code>NULL</code> if a buffer
+ * shall be implicitly created on the heap
+ * @param bufsize the size of the copy buffer - if <code>NULL</code> was
+ * provided for <code>buf</code>, this is the size of the buffer that shall be
+ * implicitly created
+ * @return total number of bytes copied
+ */
+#define ucx_stream_bcopy(src,dest,rfnc,wfnc, buf, bufsize) ucx_stream_bncopy(\
+        src, dest, (read_func)rfnc, (write_func)wfnc, \
+        buf, bufsize, (size_t)-1)
 
 /**
  * Wraps the strcmp function.
@@ -219,10 +246,6 @@
  */
 sstr_t ucx_asprintf(UcxAllocator *allocator, const char *fmt, ...);
 
-/** Shortcut for ucx_asprintf() with default allocator. */
-#define ucx_sprintf(fmt, ...) \
-    ucx_asprintf(ucx_default_allocator(), fmt, __VA_ARGS__)
-
 /**
  * <code>va_list</code> version of ucx_asprintf().
  * 
@@ -234,8 +257,12 @@
  */
 sstr_t ucx_vasprintf(UcxAllocator *allocator, const char *fmt, va_list ap);
 
+/** Shortcut for ucx_asprintf() with default allocator. */
+#define ucx_sprintf(...) \
+    ucx_asprintf(ucx_default_allocator(), __VA_ARGS__)
+
 /**
- * A <code>printf()</code> like function which writes the output to an
+ * A <code>printf()</code> like function which writes the output to a
  * UcxBuffer.
  * 
  * @param buffer the buffer the data is written to