archive_acl.rs数组操作可读性较差

### 原生C语言的代码
```
	/* Now, allocate the string and actually populate it. */
	p = s = (char *)malloc(length * sizeof(char));
	if (p == NULL) {
		if (errno == ENOMEM)
			__archive_errx(1, "No memory");
		return (NULL);
	}
	count = 0;

if ((want_type & ARCHIVE_ENTRY_ACL_TYPE_ACCESS) != 0) {
		append_entry(&p, NULL, ARCHIVE_ENTRY_ACL_TYPE_ACCESS,
		    ARCHIVE_ENTRY_ACL_USER_OBJ, flags, NULL,
		    acl->mode & 0700, -1);
		*p++ = separator;
		append_entry(&p, NULL, ARCHIVE_ENTRY_ACL_TYPE_ACCESS,
		    ARCHIVE_ENTRY_ACL_GROUP_OBJ, flags, NULL,
		    acl->mode & 0070, -1);
		*p++ = separator;
		append_entry(&p, NULL, ARCHIVE_ENTRY_ACL_TYPE_ACCESS,
		    ARCHIVE_ENTRY_ACL_OTHER, flags, NULL,
		    acl->mode & 0007, -1);
		count += 3;
	}
```

### RUST重构代码
```
/* Now, allocate the string and actually populate it. */
    s = malloc_safe(
        (length as libc::c_ulong)
            .wrapping_mul(::std::mem::size_of::<libc::c_char>() as libc::c_ulong),
    ) as *mut libc::c_char;
    p = s;
    if p.is_null() {
        if *__errno_location_safe() == ARCHIVE_ACL_DEFINED_PARAM.enomem {
            __archive_errx_safe(
                1 as libc::c_int,
                b"No memory\x00" as *const u8 as *const libc::c_char,
            );
        }
        return 0 as *mut libc::c_char;
    }
    count = 0 as libc::c_int;
    if want_type & ARCHIVE_ACL_DEFINED_PARAM.archive_entry_acl_type_access != 0 as libc::c_int {
        append_entry(
            &mut p,
            0 as *const libc::c_char,
            ARCHIVE_ACL_DEFINED_PARAM.archive_entry_acl_type_access,
            ARCHIVE_ACL_DEFINED_PARAM.archive_entry_acl_user_obj,
            flags,
            0 as *const libc::c_char,
            ((*acl).mode & 0o700 as libc::c_int as libc::c_uint) as libc::c_int,
            -(1 as libc::c_int),
        );
        let fresh17 = p;
        p = p.offset(1);
        *fresh17 = separator;
        append_entry(
            &mut p,
            0 as *const libc::c_char,
            ARCHIVE_ACL_DEFINED_PARAM.archive_entry_acl_type_access,
            ARCHIVE_ACL_DEFINED_PARAM.archive_entry_acl_group_obj,
            flags,
            0 as *const libc::c_char,
            ((*acl).mode & 0o70 as libc::c_int as libc::c_uint) as libc::c_int,
            -(1 as libc::c_int),
        );
        let fresh18 = p;
        p = p.offset(1);
        *fresh18 = separator;
        append_entry(
            &mut p,
            0 as *const libc::c_char,
            ARCHIVE_ACL_DEFINED_PARAM.archive_entry_acl_type_access,
            ARCHIVE_ACL_DEFINED_PARAM.archive_entry_acl_other,
            flags,
            0 as *const libc::c_char,
            ((*acl).mode & 0o7 as libc::c_int as libc::c_uint) as libc::c_int,
            -(1 as libc::c_int),
        );
        count += 3 as libc::c_int
    }
```

openEuler/libarchive-rust

内容风险标识

评论 (1)

openEuler/libarchive-rust .gitee-modal { width: 500px !important; }

内容风险标识