C：从分隔源字符串创建字符串数组 [英] C: creating array of strings from delimited source string

问题描述

这将是一个分隔的字符串转换为字符串在C（不是C ++）阵列的有效途径？例如，我可能有：

What would be an efficient way of converting a delimited string into an array of strings in C (not C++)? For example, I might have:

char *input = "valgrind --leak-check=yes --track-origins=yes ./a.out"

源字符串永远只有一个空格作为分隔符。我想malloc分配的字符串数组malloc分配的char * myArray的[] 这样：

myarray[0]=="valgrind"
myarray[1]=="--leak-check=yes"
...

修改我要假设有在 inputString ，所以我不能只是将其限制在10令牌任意数量或一些东西。

Edit I have to assume that there are an arbitrary number of tokens in the inputString so I can't just limit it to 10 or something.

我已经尝试与 strtok的凌乱的解决方案，并链表我已经实现，但抱怨Valgrind的这么多，我就放弃了。

I've attempted a messy solution with strtok and a linked list I've implemented, but valgrind complained so much that I gave up.

（如果你想知道，这是一个基本的Unix shell我试着写。）

(If you're wondering, this is for a basic Unix shell I'm trying to write.)

推荐答案

什么是关于这样的：

char* string = "valgrind --leak-check=yes --track-origins=yes ./a.out";
char** args = (char**)malloc(MAX_ARGS*sizeof(char*));
memset(args, 0, sizeof(char*)*MAX_ARGS);

char* curToken = strtok(string, " \t");

for (int i = 0; curToken != NULL; ++i)
{
  args[i] = strdup(curToken);
  curToken = strtok(NULL, " \t");
}

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