如何在debian-like系统中使用libapt（或libept）来列出软件包并获取他们的信息？

问题描述

有人在类似debian的系统中使用libapt或libept列出软件包并获取有关软件包的信息？

Libapt没有详细记录，发现了几个关于libept的例子和教程。有人可以解释我最好的方法

1. 获取apt系统中的每个包的列表


2. 
   
3. 获取单个软件包安装的文件列表

获取有关单个软件包的信息（例如名称，版本，依赖性，描述等）

直接使用apt内部文件很简单，但我想使用一个库来遵循apt规范。

解决方案

在debian中有一个名为 libapt-pkg-doc 的包，其中包含一些文档（如API参考）它在file：///usr/share/doc/libapt-pkg-doc/html/index.xhtml。

我只是看看libapt和这里

 <$ c 
 $ c> #include< apt-pkg / cachefile.h> 
 #include< apt-pkg / pkgcache.h> 
 
 int main（）{
 // _config和_system在libapt头文件中定义
 pkgInitConfig（* _ config）; 
 pkgInitSystem（* _ config，_system）; 
 
 pkgCacheFile cache_file; 
 pkgCache * cache = cache_file.GetPkgCache（）; 
 
 for（pkgCache :: PkgIterator package = cache-> PkgBegin（）;！package.end（）; package ++）{
 std :: cout< package.Name（）<< std :: endl; 
} 
 
 return 0; 
} 
  

Somebody used libapt or libept to list packages and get informations about package in a debian-like system?

Libapt is not well-documented at all, and i've found few examples and tutorials about libept. Can someone explain me best methods to

1. get a list of every packages in the apt-system
2. get informations about single packages (like name, version, dependences, description, etc.
3. get list of files installed by a single package

Work directly with apt internal files is quite simple, but i want to use a library to respect apt specifications.

解决方案

In debian there is a package called libapt-pkg-doc which contains some documentation (like an API reference). Once installed, you can access it at file:///usr/share/doc/libapt-pkg-doc/html/index.xhtml.

I only just had a look at libapt and here is what I have learned so far:

How to list all packages:

#include <apt-pkg/cachefile.h>
#include <apt-pkg/pkgcache.h>

int main() {
    // _config and _system are defined in the libapt header files
    pkgInitConfig(*_config);
    pkgInitSystem(*_config, _system);

    pkgCacheFile cache_file;
    pkgCache* cache = cache_file.GetPkgCache();

    for (pkgCache::PkgIterator package = cache->PkgBegin(); !package.end(); package++) {
        std::cout << package.Name() << std::endl;
    }

    return 0;
}

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