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Refactor xy_getcmd()

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This commit is contained in:
Aoran Zeng
2023-09-27 19:31:23 +08:00
parent 17afaae1f4
commit b032ec7710
3 changed files with 37 additions and 44 deletions
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13
xy.h
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@@ -456,12 +456,16 @@ xy_str_strip (const char* str)
/**
* 执行cmd，返回其最后一行输出结果
* 执行cmd，返回其最后某行输出结果
*
* @param cmd 要执行的命令
* @param n 命令打印的结果行，0 表示最后一行，n (n>0) 表示第n行
* @param func 对读取的行执行函数
*
* @note 返回的字符串最后面可能有换行符号
*/
static char*
xy_getcmd(const char* cmd, bool (*func)(const char*))
xy_getcmd (const char* cmd, unsigned long n, void (*func)(const char*))
{
const int size = 512;
char* buf = (char*) malloc(size);
@@ -473,10 +477,13 @@ xy_getcmd(const char* cmd, bool (*func)(const char*))
}
char* ret = NULL;
unsigned long count = 0;
while (true) {
if(NULL==fgets(buf, size, stream)) break;
if (NULL==fgets(buf, size, stream)) break;
ret = buf;
count += 1;
if (n==count) break;
if (func) { func(buf); }
}