如何在std :: string中插入空字节？ [英] How can I insert null bytes in to std::string?
问题描述
我必须连接到使用字符串的旧库，并且
无可奈何。我需要传递一个用null填充的字符串
字节。那么如何将这些空字节附加到std :: string？
是的我知道使用像vector这样的东西会更好
没有那个选项。
是的我知道我将无法使用std :: string.c_str（）但是
而是必须使用std :; string.getData（）。
TIA。
I have to interface to an older library that uses strings and there is
no alternative. I need to pass a string that is padded with null
bytes. So how can I append these null bytes to the std::string?
Yes I know it would be better to use something like a vector but I do
not have that option.
Yes I know that I will not be able to use std::string.c_str() but will
instead have to use std:;string.getData().
TIA.
推荐答案
Pep写道：
Pep wrote:
我必须连接到使用字符串的旧库，并且
无可奈何。我需要传递一个用null填充的字符串
字节。那么如何将这些空字节附加到std :: string呢？
I have to interface to an older library that uses strings and there is
no alternative. I need to pass a string that is padded with null
bytes. So how can I append these null bytes to the std::string?
可能使用追加会员......你有RTFM吗？
Probably using "append" member... Have you RTFM?
是的我知道使用像矢量这样的东西会更好
没有那个选择。
Yes I know it would be better to use something like a vector but I do
not have that option.
在你的情况下，它可能没关系。为什么你认为''vector''
有什么优势？
In your case it probably does not matter. Why do you think that ''vector''
has any advantage?
是的我知道我将无法使用std :: string.c_str（）但是
必须使用std :; string.getData（）。
Yes I know that I will not be able to use std::string.c_str() but will
instead have to use std:;string.getData().
就像使用''vector''一样，你总是可以使用第一个
char的地址...
V
-
请在通过电子邮件回复时删除资金''A'
我没有回复最热门的回复，请不要问
Just like with a ''vector'', you can always use the address of the first
char...
V
--
Please remove capital ''A''s when replying by e-mail
I do not respond to top-posted replies, please don''t ask
Victor Bazarov写道：
Victor Bazarov wrote:
Pep写道：
Pep wrote:
我必须连接到使用字符串的旧库，并且
别无选择。我需要传递一个用null填充的字符串
字节。那么如何将这些空字节附加到std :: string呢？
I have to interface to an older library that uses strings and there is
no alternative. I need to pass a string that is padded with null
bytes. So how can I append these null bytes to the std::string?
可能使用追加会员......你有RTFM吗？
Probably using "append" member... Have you RTFM?
是的，但有人告诉我，有一种方式没有
涉及使用追加，所以我找不到任何办法，我决定询问
，如果有人知道其中一个技巧。
猜猜它将不得不然后追加。
Yes but it was suggested to me that there was a way that did not
involve using append, so as I could not find any way I decided to ask
if anyone knew of one of those "tricks".
Guess it will have to be append then.
是的我知道使用像vector这样的东西会更好
没有那个选项。
Yes I know it would be better to use something like a vector but I do
not have that option.
在你的情况下，它可能没关系。为什么你认为''vector''
有什么优势？
In your case it probably does not matter. Why do you think that ''vector''
has any advantage?
我在之前的帖子中读到了一些内容，建议向量将会更好，但是因为你，我不明白除了或许以外
海报意味着理论上你不应该在字符串中有空值。
I read something in a previous posting that suggested vectors would be
better though as you, I do not understand how other than perhaps the
poster meant that you should not in theory have nulls in strings.
>
>
是的我知道我将无法使用std :: string.c_str（）但是
而是必须使用std ：; string.getData（）。
Yes I know that I will not be able to use std::string.c_str() but will
instead have to use std:;string.getData().
就像使用''vector''一样，你总是可以使用第一个
char的地址...
Just like with a ''vector'', you can always use the address of the first
char...
出于某种原因，我选择了比c_str更好的getData，因为它/ b $ b意味着它的名称是正确的方法。 />
For some reason I opted for the getData being better than c_str as it
implies it is the correct method by it''s name.
>
V
-
请删除大写''A'当通过电子邮件回复时
我没有回复最热门的回复，请不要问
>
V
--
Please remove capital ''A''s when replying by e-mail
I do not respond to top-posted replies, please don''t ask
谢谢你帮助。
Thanks for the help.
文章< eb ********** @ news.datemas.de>，
Victor Bazarov < v。******** @ comAcast.netwrote：
In article <eb**********@news.datemas.de>,
"Victor Bazarov" <v.********@comAcast.netwrote:
是的我知道我不会使用std :: string.c_str（）但是
必须使用std :; string.getData（）。
Yes I know that I will not be able to use std::string.c_str() but will
instead have to use std:;string.getData().
就像使用''vector''一样，你总是可以使用第一个
char的地址...
Just like with a ''vector'', you can always use the address of the first
char...
真的吗？我不认为标准保证std :: string是
像vector一样连续吗？
Really? I didn''t think the standard guaranteed that a std::string was
contiguous like vector is?
这篇关于如何在std :: string中插入空字节？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！
