pax*_*blo 35
以下代码使用stat()函数和S_ISDIR('是目录')和S_ISREG('是常规文件')宏来获取有关该文件的信息.其余的只是错误检查,足以制作完整的可编译程序.
#include <stdio.h>
#include <errno.h>
#include <sys/stat.h>
int main (int argc, char *argv[]) {
int status;
struct stat st_buf;
// Ensure argument passed.
if (argc != 2) {
printf ("Usage: progName <fileSpec>\n");
printf (" where <fileSpec> is the file to check.\n");
return 1;
}
// Get the status of the file system object.
status = stat (argv[1], &st_buf);
if (status != 0) {
printf ("Error, errno = %d\n", errno);
return 1;
}
// Tell us what it is then exit.
if (S_ISREG (st_buf.st_mode)) {
printf ("%s is a regular file.\n", argv[1]);
}
if (S_ISDIR (st_buf.st_mode)) {
printf ("%s is a directory.\n", argv[1]);
}
return 0;
}
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示例运行如下所示:
pax> vi progName.c ; gcc -o progName progName.c ; ./progName
Usage: progName
where is the file to check.
pax> ./progName /home
/home is a directory.
pax> ./progName .profile
.profile is a regular file.
pax> ./progName /no_such_file
Error, errno = 2
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使用boost :: filesystem库及其is_directory(const Path&p)怎么样?熟悉它可能需要一段时间,但不是很多.它可能值得投资,您的代码将不是特定于平台的.
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