openssl編程 之 堆棧的理解

openssl 堆棧

sk_dup 堆棧拷貝
sk_new_null, sk_new 構建新堆棧
sk_insert 插入數據
sk_delete 刪除數據
sk_find 查找
sk_push 入棧
sk_pop 出戰
sk_pop 獲取堆棧元素個數
sk_value 獲取堆棧值

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <openssl/safestack.h>

#define sk_Student_new(st) SKM_sk_new(Student, (st))
#define sk_Student_new_null() SKM_sk_new_null(Student)
#define sk_Student_free(st) SKM_sk_free(Student, (st))
#define sk_Student_num(st) SKM_sk_num(Student, (st))
#define sk_Student_value(st, i) SKM_sk_value(Student, (st), (i))
#define sk_Student_set(st, i, val) SKM_sk_set(Student, (st), (i), (val))
#define sk_Student_zero(st) SKM_sk_zero(Student, (st))
#define sk_Student_push(st, val) SKM_sk_push(Student, (st), (val))
#define sk_Student_unshift(st, val) SKM_sk_unshift(Student, (st), (val))
#define sk_Student_find(st, val) SKM_sk_find(Student, (st), (val))
#define sk_Student_delete(st, i) SKM_sk_delete(Student, (st), (i))
#define sk_Student_delete_ptr(st, ptr) SKM_sk_delete_ptr(Student, (st), (ptr))
#define sk_Student_insert(st, val, i) SKM_sk_insert(Student, (st), (val), (i))
#define sk_Student_set_cmp_func(st, cmp) SKM_sk_set_cmp_func(Student, (st), (cmp))
#define sk_Student_dup(st) SKM_sk_dup(Student, st)
#define sk_Student_pop_free(st, free_func) SKM_sk_pop_free(Student, (st), (free_func))
#define sk_Student_shift(st) SKM_sk_shift(Student, (st))
#define sk_Student_pop(st) SKM_sk_pop(Student, (st))
#define sk_Student_sort(st) SKM_sk_sort(Student, (st))

typedef struct Student_st
{
   
   
    char *name;
    int age;
    char *otherInfo;
}Student;

typedef STACK_OF(Student) Students;

Student *Student_Malloc()
{
   
   
    Student *a=malloc(sizeof(Student));
    a->name=malloc(20);
    strcpy(a->name,"zcp");
    a->otherInfo=malloc(20);
    strcpy(a->otherInfo,"no info");
    return a;
}

Student *Student_Malloc2()
{
   
   
    Student *a=malloc(sizeof(Student));
    a->name=malloc(20);
    strcpy(a->name,"tom");
    a->otherInfo=malloc(20);
    strcpy(a->otherInfo,"no info");
    return a;
}
void Student_Free(Student *a)
{
   
   
    free(a->name);
    free(a->otherInfo);
    free(a);
}

static int Student_cmp(Student *a,Student *b)
{
   
   
    int ret;

    ret=strcmp(a->name,b->name);
    return ret;
}

int main()
{
   
   
    Students *stu_stack1,*stu_stack2;
    Student *stu1,*stu2,*stu3,*stu4,*one;
    int i;

    stu_stack1=sk_Student_new_null();
    stu_stack2=sk_Student_new(Student_cmp);


    stu1=Student_Malloc();
    stu2=Student_Malloc2();
    stu3=Student_Malloc();
    stu4=Student_Malloc2();

    sk_Student_push(stu_stack1,stu1);
    sk_Student_push(stu_stack1,stu2);
    sk_Student_push(stu_stack2,stu3);
    sk_Student_push(stu_stack2,stu4);


    i = sk_Student_find(stu_stack2,stu4);
    printf("i = %d\n",i);
    int num1=sk_Student_num(stu_stack1);
    int num2=sk_Student_num(stu_stack2);

    printf("num1 is %d\n",num1);
    printf("num2 is %d\n",num2);

    printf("=========stu_student1==============\n");
    for(i=0;i<num1;i++)
    {
   
   
        one=sk_Student_value(stu_stack1,i);
        printf("student name : %s\n",one->name);
        printf("sutdent age  : %d\n",one->age);
        printf("student otherinfo : %s\n",one->otherInfo);
        printf("======================\n");    
    }
    printf("=========stu_student2==============\n");

    for(i=0;i<num2;i++)
    {
   
   
        one=sk_Student_value(stu_stack2,i);
        printf("student name : %s\n",one->name);
        printf("sutdent age  : %d\n",one->age);
        printf("student otherinfo : %s\n",one->otherInfo);
        printf("======================\n");    
    }


    sk_Student_pop_free(stu_stack1,Student_Free);
    sk_Student_pop_free(stu_stack2,Student_Free);
    return 0;
}