apt/cmdline/apt-config.cc

// -*- mode: cpp; mode: fold -*-
// Description								/*{{{*/
// $Id: apt-config.cc,v 1.11 2003/01/11 07:18:44 jgg Exp $
/* ######################################################################
   
   APT Config - Program to manipulate APT configuration files
   
   This program will parse a config file and then do something with it.
   
   Commands:
     shell - Shell mode. After this a series of word pairs should occur.
             The first is the environment var to set and the second is
             the key to set it from. Use like: 
 eval `apt-config shell QMode apt::QMode`
   
   ##################################################################### */
									/*}}}*/
// Include Files							/*{{{*/
#include<config.h>

#include <apt-pkg/cmndline.h>
#include <apt-pkg/error.h>
#include <apt-pkg/init.h>
#include <apt-pkg/strutl.h>
#include <apt-pkg/configuration.h>
#include <apt-pkg/aptconfiguration.h>
#include <apt-pkg/pkgsystem.h>

#include <iostream>
#include <string>
#include <vector>
#include <string.h>

#include <apt-private/private-cmndline.h>

#include <apti18n.h>
									/*}}}*/
using namespace std;

// DoShell - Handle the shell command					/*{{{*/
// ---------------------------------------------------------------------
/* */
static bool DoShell(CommandLine &CmdL)
{
   for (const char **I = CmdL.FileList + 1; *I != 0; I += 2)
   {
      if (I[1] == 0 || strlen(I[1]) == 0)
	 return _error->Error(_("Arguments not in pairs"));

      string key = I[1];
      if (key.end()[-1] == '/') // old directory format
	 key.append("d");

      if (_config->ExistsAny(key.c_str()))
	 cout << *I << "='" << 
	         SubstVar(_config->FindAny(key.c_str()),"'","'\\''") << '\'' << endl;
      
   }
   
   return true;
}
									/*}}}*/
// DoDump - Dump the configuration space				/*{{{*/
// ---------------------------------------------------------------------
/* */
static bool DoDump(CommandLine &CmdL)
{
   bool const empty = _config->FindB("APT::Config::Dump::EmptyValue", true);
   std::string const format = _config->Find("APT::Config::Dump::Format", "%f \"%v\";\n");
   if (CmdL.FileSize() == 1)
      _config->Dump(cout, NULL, format.c_str(), empty);
   else
      for (const char **I = CmdL.FileList + 1; *I != 0; ++I)
	 _config->Dump(cout, *I, format.c_str(), empty);
   return true;
}
									/*}}}*/
// ShowHelp - Show the help screen					/*{{{*/
// ---------------------------------------------------------------------
/* */
static bool ShowHelp(CommandLine &, CommandLine::DispatchWithHelp const * Cmds)
{
   ioprintf(cout, "%s %s (%s)\n", PACKAGE, PACKAGE_VERSION, COMMON_ARCH);
   if (_config->FindB("version") == true)
      return true;

   std::cout <<
      _("Usage: apt-config [options] command\n"
      "\n"
      "apt-config is a simple tool to read the APT config file\n")
      << std::endl
      << _("Commands:") << std::endl;
   for (; Cmds->Handler != nullptr; ++Cmds)
   {
      if (Cmds->Help == nullptr)
	 continue;
      std::cout << "  " << Cmds->Match << " - " << Cmds->Help << std::endl;
   }

   std::cout << std::endl <<
      _("Options:\n"
      "  -h   This help text.\n"
      "  -c=? Read this configuration file\n"
      "  -o=? Set an arbitrary configuration option, eg -o dir::cache=/tmp\n");
   return true;
}
									/*}}}*/
int main(int argc,const char *argv[])					/*{{{*/
{
   CommandLine::DispatchWithHelp Cmds[] = {
      {"shell", &DoShell, _("get configuration values via shell evaluation")},
      {"dump", &DoDump, _("show the active configuration setting")},
      {nullptr, nullptr, nullptr}
   };

   std::vector<CommandLine::Args> Args = getCommandArgs("apt-config", CommandLine::GetCommand(Cmds, argc, argv));

   // Set up gettext support
   setlocale(LC_ALL,"");
   textdomain(PACKAGE);

   // Parse the command line and initialize the package library
   CommandLine CmdL;
   ParseCommandLine(CmdL, Cmds, Args.data(), &_config, &_system, argc, argv, ShowHelp);

   std::vector<std::string> const langs = APT::Configuration::getLanguages(true);
   _config->Clear("Acquire::Languages");
   for (std::vector<std::string>::const_iterator l = langs.begin(); l != langs.end(); ++l)
      _config->Set("Acquire::Languages::", *l);

   std::vector<std::string> const archs = APT::Configuration::getArchitectures();
   _config->Clear("APT::Architectures");
   for (std::vector<std::string>::const_iterator a = archs.begin(); a != archs.end(); ++a)
      _config->Set("APT::Architectures::", *a);

   std::vector<APT::Configuration::Compressor> const compressors = APT::Configuration::getCompressors();
   _config->Clear("APT::Compressor");
   string conf = "APT::Compressor::";
   for (std::vector<APT::Configuration::Compressor>::const_iterator c = compressors.begin(); c != compressors.end(); ++c)
   {
      string comp = conf + c->Name + "::";
      _config->Set(comp + "Name", c->Name);
      _config->Set(comp + "Extension", c->Extension);
      _config->Set(comp + "Binary", c->Binary);
      _config->Set(std::string(comp + "Cost").c_str(), c->Cost);
      for (std::vector<std::string>::const_iterator a = c->CompressArgs.begin(); a != c->CompressArgs.end(); ++a)
	 _config->Set(comp + "CompressArg::", *a);
      for (std::vector<std::string>::const_iterator a = c->UncompressArgs.begin(); a != c->UncompressArgs.end(); ++a)
	 _config->Set(comp + "UncompressArg::", *a);
   }

   std::vector<std::string> const profiles = APT::Configuration::getBuildProfiles();
   _config->Clear("APT::Build-Profiles");
   for (std::vector<std::string>::const_iterator p = profiles.begin(); p != profiles.end(); ++p)
      _config->Set("APT::Build-Profiles::", *p);

   // Match the operation
   CmdL.DispatchArg(Cmds);
   
   // Print any errors or warnings found during parsing
   if (_error->empty() == false)
   {
      bool Errors = _error->PendingError();
      _error->DumpErrors();
      return Errors == true?100:0;
   }
   
   return 0;
}
									/*}}}*/