搜索 Ada Lib 以通过 http 打开文件

发布于 2024-10-14 05:09:30 字数 263 浏览 6 评论 0原文

我正在寻找一个库，我可以将其包含在程序中以打开具有给定互联网地址的文件。就像 http://foobar.com/foobar.txt 一样。

喜欢

Ada.Text_IO.Open (File, Ada.Text_IO.In_File, "bla.txt");

but which is not limited on local files.

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I'm searching for a Library which I can include in a program to open a file with a given internet address. Just like http://foobar.com/foobar.txt.

Ada.Text_IO.Open (File, Ada.Text_IO.In_File, "bla.txt");

but which is not limited on local files.

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浮生未歇 2024-10-21 05:09:30

好吧，您不可能找到具有确切接口的东西，因为 Text_IO 是一个标准库，第三方无法以这种方式轻松扩展。

如果您的平台的底层文件系统支持 HTTP，那么它就会像您想要的那样工作。但我不知道有哪个平台可以这样工作。

您可能想要的通用解决方案是 AWS（Ada Web 服务器）。如果愿意的话，人们可以使用它来实现一个成熟的 Web 服务器，但它也包含 HTTP 客户端设施。 HTTP 客户端将是您想要的（请参阅 AWS.Client）。与仅进行一次标准 API 调用相比，您需要做更多的工作，但可能不需要太多工作。

下面是一个摘自 Rosetta 代码的示例：

with Ada.Text_IO; 
use Ada.Text_IO; 
with AWS.Client;
with AWS.Response; 
procedure HTTP_Request is
begin
   Put_Line (AWS.Response.Message_Body (AWS.Client.Get (URL => "http://www.rosettacode.org")));
end HTTP_Request;

Well, you aren't liable to find something with that exact interface, as Text_IO is a standard library and can't easily be extended by third parties in that way.

If your platform's underlying filesystem were to support HTTP, then it would work just like you want. I don't know of any platform that works that way however.

What you probably want as a general solution is AWS (Ada Web Server). A person could use that to implement a full-blown web server if they want, but it also contains HTTP client facilities. The HTTP client would be what you want (see AWS.Client). It would be a bit more work on your part than just making one standard API call, but probably no too much work.

Here's an example, cribbed from Rosetta Code:

with Ada.Text_IO; 
use Ada.Text_IO; 
with AWS.Client;
with AWS.Response; 
procedure HTTP_Request is
begin
   Put_Line (AWS.Response.Message_Body (AWS.Client.Get (URL => "http://www.rosettacode.org")));
end HTTP_Request;

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