重定向输出从标准输出为一个字符串？ [英] redirect output from stdout to a string?

问题描述

用C
我想从重定向一个标准输出过程的输出，写入了共享内存段，它可以被看作是一个字符数组或字符串的指针结果
我知道有dup2但它需要的文件discriptors作为参数不是一个指向数组的指针。有没有办法把它重定向到一个字符串？

解决方案

 字符字符串[SIZE]
freopen函数（的/ dev / null的，一，标准输出）;
则setbuf（标准输出，字符串）;
 

请参见 freopen函数并的则setbuf 对它们的定义

in C i want to redirect the output of a process from stdout to write to a "shared memory segment" which can be thought of as a char array or a string with a pointer
i know that there is dup2 but it takes file discriptors as argument not a pointer to an array. is there any way to redirect it to a string?

解决方案

char string[SIZE];
freopen("/dev/null", "a", stdout);
setbuf(stdout, string);

see freopen and setbuf for their definitions

这篇关于重定向输出从标准输出为一个字符串？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！