Merge pull request #48 from bkcarlos/master

数组通用类

c-cpp/05_array/Array_gp.c

@@ -0,0 +1,278 @@
+#include "Array.h"
+
+#include <string.h>
+#include <stdbool.h>
+
+Array* arrayCreate()
+{
+    struct Array *array = NULL;
+    array = malloc(sizeof(*array));
+    if (NULL == array)
+    {
+        return NULL;
+    }
+
+    array->p = NULL;
+
+    array->size = 0;
+    array->typeSize = 0;
+    array->len = 0;
+
+    array->dup = NULL;
+    array->free = NULL;
+    array->match = NULL;
+
+    return array;
+}
+
+void arrayInit(Array *array, int size, int typeSize)
+{
+    if (NULL == array
+        || typeSize <= 0
+        || size < 0)
+    {
+        return;
+    }
+
+    void *p = calloc(1, size* typeSize);
+    if (NULL == p)
+    {
+        return;
+    }
+
+    array->p = p;
+    array->len = 0;
+    array->size = size;
+    array->typeSize = typeSize;
+}
+
+int arrayInsert(Array *array, size_t pos, void *const value)
+{
+    if (NULL == array)
+    {
+        return -1;
+    }
+
+    if (array->len >= array->size)
+    {
+        return -2;
+    }
+
+    if (pos > array->size || pos <= 0)
+    {
+        return -3;
+    }
+
+    char *pBegin = array->p;
+    for (size_t i = array->len; i > pos - 1; --i)
+    {
+        void *pNew = pBegin + i * array->typeSize;
+        void *pOld = pBegin + (i - 1) *array->typeSize;
+        if (NULL != array->dup)
+        {
+            array->dup(pNew, pOld);
+        }
+        else
+        {
+            memcpy(pNew, pOld, array->typeSize);
+        }
+    }
+
+    void *pCopy = (void*)(pBegin + ((pos - 1) * array->typeSize));
+    if (NULL != array->dup)
+    {
+        array->dup(pCopy, value);
+    }
+    else
+    {
+        memcpy(pCopy, value, array->typeSize);
+    }
+    ++array->len;
+    return 0;
+}
+
+size_t arraySearchValue(Array *array, void* const value)
+{
+    if (NULL == array)
+    {
+        return -1;
+    }
+
+    char *pBegin = array->p;
+    size_t i = 0;
+    for (; i < array->len; ++i)
+    {
+        int nCmp = 0;
+        if (NULL != array->match)
+        {
+            nCmp = array->match(pBegin + i * array->typeSize, value);
+        }
+        else
+        {
+            nCmp = memcmp(pBegin + i * array->typeSize, value, array->typeSize);
+        }
+
+        if (nCmp == 0)
+        {
+            break;
+        }
+    }
+
+    return i;
+}
+
+void* arrayIndex(Array *array, size_t index)
+{
+    if (NULL == array)
+    {
+        return NULL;
+    }
+
+    if (index > array->len
+        || index <= 0)
+    {
+        return NULL;
+    }
+
+    char *pBegin = array->p;
+    return pBegin + array->typeSize * (index - 1);
+}
+
+int arrayModify(Array *array, size_t pos, void *const value)
+{
+    if (NULL == array)
+    {
+        return -1;
+    }
+    if (pos > array->len
+        || pos <= 0)
+    {
+        return -2;
+    }
+
+    char *pBegin = array->p;
+    void *pOld = pBegin + (pos - 1) * array->typeSize;
+    if (NULL != array->dup)
+    {
+        array->dup(pOld, value);
+    }
+    else
+    {
+        memcpy(pOld, value, array->typeSize);
+    }
+
+    return 0;
+}
+
+size_t arrayLen(Array *array)
+{
+    if (NULL == array)
+    {
+        return 0;
+    }
+
+    return array->len;
+}
+
+size_t arraySize(Array *array)
+{
+    if (NULL == array)
+    {
+        return 0;
+    }
+
+    return array->size;
+}
+
+void arrayEmpty(Array *array)
+{
+    if (NULL == array)
+    {
+        return;
+    }
+
+    free(array->p);
+    array->p = NULL;
+    free(array);
+    array = NULL;
+}
+
+void arrayDelValue(Array *array, void *value)
+{
+    if (NULL == array)
+    {
+        return;
+    }
+
+    char* pBegin = array->p;
+    bool bCopy = false;
+    for (size_t i = 0; i < array->len; ++i)
+    {
+        if (!bCopy)
+        {
+            int nCmp = 0;
+            if (NULL != array->match)
+            {
+                nCmp = array->match(pBegin + i * array->typeSize, value);
+            }
+            else
+            {
+                nCmp = memcmp(pBegin + i * array->typeSize, value, array->typeSize);
+            }
+
+            if (0 == nCmp)
+            {
+                bCopy = true;
+                continue;
+            }
+        }
+        else
+        {
+            void *pOld = pBegin + (i + 1) * array->typeSize;
+            void *pNew = pBegin + i * array->typeSize;
+            if (NULL != array->dup)
+            {
+                array->dup(pNew, pOld);
+            }
+            else
+            {
+                memcpy(pNew, pOld, array->typeSize);
+            }
+        }
+    }
+
+    if (bCopy)
+    {
+        --array->len;
+    }
+}
+
+void arrayDelIndex(Array *array, size_t pos)
+{
+    if (NULL == array)
+    {
+        return;
+    }
+
+    if (pos > array->len || pos <= 0)
+    {
+        return;
+    }
+
+    char* pBegin = array->p;
+    for (size_t i = pos - 1; i < array->len - 1; ++i)
+    {
+        void *pOld = pBegin + (i + 1) * array->typeSize;
+        void *pNew = pBegin + i * array->typeSize;
+        if (NULL != array->dup)
+        {
+            array->dup(pNew, pOld);
+        }
+        else
+        {
+            memcpy(pNew, pOld, array->typeSize);
+        }
+    }
+
+    --array->len;
+}

c-cpp/05_array/Array_gp.h

@@ -0,0 +1,48 @@
+#ifndef __ARRAY_H__
+#define __ARRAY_H__
+
+#include <stdio.h>
+#include <stdlib.h>
+
+typedef struct Array
+{
+    // p指针的空间大小
+    size_t size;
+    // p指针已经使用的空间大小
+    size_t len;
+    // 数据类型的大小
+    size_t typeSize;
+    // 值复制函数
+    void(*dup)(void *ptr, void *key);
+    // 值释放函数
+    void(*free)(void *ptr);
+    // 值比较函数
+    int(*match)(void *ptr, void *key);
+    // 存放数据的指针
+    void   *p;
+}Array;
+
+#define arraySetDupMethod(a, m) ((a)->dup = (m))
+#define arraySetFreeMethod(a, m) ((a)->free = (m))
+#define arraySetMatchMethod(a, m) ((a)->match = (m))
+
+#define arrayGetDupMethod(a) ((a)->dup)
+#define arrayGetFree(a) ((a)->free)
+#define arrayGetMatchMethod(a) ((a)->match)
+
+Array* arrayCreate();
+void arrayInit(Array *array, int size, int typeSize);
+
+int arrayInsert(Array *array, size_t pos, void *const value);
+size_t arraySearchValue(Array *array, void* const value);
+void* arrayIndex(Array *array, size_t index);
+int arrayModify(Array *array, size_t pos, void *const value);
+
+size_t arrayLen(Array *array);
+size_t arraySize(Array *array);
+
+void arrayEmpty(Array *array);
+void arrayDelValue(Array *array, void *value);
+void arrayDelIndex(Array *array, size_t pos);
+
+#endif // !__ARRAY_H__