blocks|key|1924012|text|如果您的意思是从您正在运行的可执行文件内部，您可以使用boost::filesystem::current_path()|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1924013|entityMap|0|LINK|mutability|MUTABLE|url|http://live.boost.org/doc/libs/1_46_1/libs/filesystem/v3/doc/reference.html#current_path^0|R|X|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

If you mean from inside the executable that you're running, you can use <a href="http://live.boost.org/doc/libs/1_46_1/libs/filesystem/v3/doc/reference.html#current_path" rel="nofollow">boost::filesystem::current_path()</a>

blocks|key|2309091|text|boost::filesystem::system_complete(argv[0]);|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|2309092|例如：|unstyled|2309093|[davka@bagvapp+Debug]$+./boostfstest+
/home/davka/workspaces/v1.1-POC/boostfstest/Debug/boostfstest|2309094|注意，这将为您提供包括可执行文件名在内的完整路径。|offset|length|style|BOLD|2309095|entityMap^0|0|0|0|O|1|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|R|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$B|C]]|$1|I|3|J|5|F|7|T|8|@$K|U|L|V|M|N]]|9|@]|A|$]]|$1|O|3|-4|5|F|7|W|8|@]|9|@]|A|$]]]|P|$]]

<pre><code>boost::filesystem::system_complete(argv[0]);
</code></pre>

e.g.

<pre><code>[davka@bagvapp Debug]$ ./boostfstest 
/home/davka/workspaces/v1.1-POC/boostfstest/Debug/boostfstest
</code></pre>

Note that this gives you the full path including the executable file name.

blocks|key|303972|text|你不能，Boost.Filesystem不提供这样的功能。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|303973|但是从Boost1.61开始，你可以使用Boost.Dll和boost::dll::program_location函数|offset|length|style|CODE|303974|#include+<boost/dll.hpp>
boost::dll::program_location().parent_path();|code-block|syntax|javascript|303975|entityMap|0|LINK|mutability|MUTABLE|url|https://www.boost.org/doc/libs/1_61_0/doc/html/boost/dll/program_location.html^0|0|U|S|U|S|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@$D|W|E|X|F|G]]|9|@$D|Y|E|Z|1|10]]|A|$]]|$1|H|3|I|5|J|7|11|8|@]|9|@]|A|$K|L]]|$1|M|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]]]

You cannot, Boost.Filesystem does not provide such functionality.

But starting with Boost 1.61 you can use Boost.Dll and function <a href="https://www.boost.org/doc/libs/1_61_0/doc/html/boost/dll/program_location.html" rel="noreferrer"><code>boost::dll::program_location</code></a>:

<pre><code>#include &lt;boost/dll.hpp&gt;
boost::dll::program_location().parent_path();
</code></pre>

blocks|key|3996236|text|使用boost::filesystem不能可靠地做到这一点。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3996237|但是，如果您使用的是windows，则可以调用GetModuleFileName来获取可执行文件的完整路径，然后使用boost::filesystem来获取目录。(参见parent_path)|offset|length|style|CODE|3996238|entityMap|0|LINK|mutability|MUTABLE|url|http://live.boost.org/doc/libs/1_46_1/libs/filesystem/v3/doc/reference.html#path-parent_path^0|0|N|H|1M|H|2C|B|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Q|8|@$D|R|E|S|F|G]|$D|T|E|U|F|G]]|9|@$D|V|E|W|1|X]]|A|$]]|$1|H|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|O]]]]

You can't do it reliably with boost::filesystem.

However if you're on windows you can call <code>GetModuleFileName</code> to get the complete path of the executable and then use <code>boost::filesystem</code> to get the directory. ( see <a href="http://live.boost.org/doc/libs/1_46_1/libs/filesystem/v3/doc/reference.html#path-parent_path" rel="noreferrer">parent_path</a>)

blocks|key|1924118|text|正如更全面讨论的here，最可靠的方法不是通过boost::filesystem。相反，您的实现应该考虑运行应用程序的操作系统。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1924119|但是，对于没有可移植性问题的快速实现，您可以检查argv是否返回了可执行文件的完整路径。如果是肯定的，你可以这样做：|1924120|namespace+fs=boost::filesystem;

fs::path+selfpath=argv[0];

selfpath=selfpath.remove_filename();|code-block|syntax|javascript|1924121|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/1023306/finding-current-executables-path-without-proc-self-exe^0|8|4|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@$A|T|B|U|1|V]]|C|$]]|$1|D|3|E|5|6|7|W|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|X|8|@]|9|@]|C|$I|J]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|C|$]]]|L|$M|$5|N|O|P|C|$Q|R]]]]

As discussed more comprehensively <a href="https://stackoverflow.com/questions/1023306/finding-current-executables-path-without-proc-self-exe">here</a>, the most reliable way to do that is not through boost::filesystem. Instead, your implementation should take into the consideration the operating system on which the application is running.

However, for a quick implementation without portability concerns, you can check if your argv[0] returns the complete path to executable. If positive, you can do something like:

<pre><code>namespace fs=boost::filesystem;

fs::path selfpath=argv[0];

selfpath=selfpath.remove_filename();
</code></pre>

blocks|key|1924205|text|从Windows14你不需要Boost，你可以使用标准库的文件系统，你可以很容易地做到这一点：(我可以确认这在C%2B%2B和Linux上也是有效的)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1924206|#include+<iostream>
#include+<filesystem>
namespace+fs+=+std::experimental::filesystem;
int+main()
{
++++fs::path+p+=+argv[0];+//+or+"C:executable_name.exe";
++++std::cout+<<+"Current+path+is+"+<<+fs::current_path()+<<+'\n'
++++++++++++++<<+"Absolute+path+for+"+<<+p+<<+"+is+"+<<+fs::absolute(p)+<<+'\n'
++++++++++<<+"System+complete+path+for+"+<<+p+<<+"+is+"+<<+fs::system_complete(p)+<<+'\n';
}|code-block|syntax|javascript|1924207|从文档中复制的示例：https://en.cppreference.com/w/cpp/experimental/fs/absolute|offset|length|1924208|entityMap|0|LINK|mutability|MUTABLE|url|https://en.cppreference.com/w/cpp/experimental/fs/absolute^0|0|0|A|1M|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@$I|V|J|W|1|X]]|A|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

From C++ 14 you don't need Boost, you can use the filesystem of the standard library you can do that easily:
(I can confirm this works on Windows and Linux as well)

<pre><code>#include &lt;iostream&gt;
#include &lt;filesystem&gt;
namespace fs = std::experimental::filesystem;
int main()
{
 fs::path p = argv[0]; // or "C:executable_name.exe";
 std::cout &lt;&lt; "Current path is " &lt;&lt; fs::current_path() &lt;&lt; '\n'
 &lt;&lt; "Absolute path for " &lt;&lt; p &lt;&lt; " is " &lt;&lt; fs::absolute(p) &lt;&lt; '\n'
 &lt;&lt; "System complete path for " &lt;&lt; p &lt;&lt; " is " &lt;&lt; fs::system_complete(p) &lt;&lt; '\n';
}
</code></pre>

Sample copied from the documentation: <a href="https://en.cppreference.com/w/cpp/experimental/fs/absolute" rel="nofollow noreferrer">https://en.cppreference.com/w/cpp/experimental/fs/absolute</a>

So I run my app. I need for it to know where its executable is. How to find path to it using Boost.Filesystem?

Boost.Filesystem how to find out in which directory your executable is?

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所以我运行我的应用程序。我需要让它知道它的可执行文件在哪里。如何使用Boost.Filesystem找到它的路径？

问Boost.Filesystem如何找出你的可执行文件在哪个目录下？
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