cmdline/apt-config.cc

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 // $Id: apt-config.cc,v 1.11 2003/01/11 07:18:44 jgg Exp $
   4 /* ######################################################################
   5
   6    APT Config - Program to manipulate APT configuration files
   7
   8    This program will parse a config file and then do something with it.
   9
  10    Commands:
  11      shell - Shell mode. After this a series of word pairs should occure.
  12              The first is the environment var to set and the second is
  13              the key to set it from. Use like:
  14  eval `apt-config shell QMode apt::QMode`
  15
  16    ##################################################################### */
  17                                                                         /*}}}*/
  18 // Include Files                                                        /*{{{*/
  19 #include<config.h>
  20
  21 #include <apt-pkg/cmndline.h>
  22 #include <apt-pkg/error.h>
  23 #include <apt-pkg/init.h>
  24 #include <apt-pkg/strutl.h>
  25 #include <apt-pkg/configuration.h>
  26 #include <apt-pkg/aptconfiguration.h>
  27 #include <apt-pkg/pkgsystem.h>
  28
  29 #include <locale.h>
  30 #include <iostream>
  31 #include <string>
  32 #include <vector>
  33
  34 #include <apti18n.h>
  35                                                                         /*}}}*/
  36 using namespace std;
  37
  38 // DoShell - Handle the shell command                                   /*{{{*/
  39 // ---------------------------------------------------------------------
  40 /* */
  41 bool DoShell(CommandLine &CmdL)
  42 {
  43    for (const char **I = CmdL.FileList + 1; *I != 0; I += 2)
  44    {
  45       if (I[1] == 0 || strlen(I[1]) == 0)
  46          return _error->Error(_("Arguments not in pairs"));
  47
  48       string key = I[1];
  49       if (key.end()[-1] == '/') // old directory format
  50          key.append("d");
  51
  52       if (_config->ExistsAny(key.c_str()))
  53          cout << *I << "='" <<
  54                  SubstVar(_config->FindAny(key.c_str()),"'","'\\''") << '\'' << endl;
  55
  56    }
  57
  58    return true;
  59 }
  60                                                                         /*}}}*/
  61 // DoDump - Dump the configuration space                                /*{{{*/
  62 // ---------------------------------------------------------------------
  63 /* */
  64 bool DoDump(CommandLine &CmdL)
  65 {
  66    _config->Dump(cout);
  67    return true;
  68 }
  69                                                                         /*}}}*/
  70 // ShowHelp - Show the help screen                                      /*{{{*/
  71 // ---------------------------------------------------------------------
  72 /* */
  73 int ShowHelp()
  74 {
  75    ioprintf(cout,_("%s %s for %s compiled on %s %s\n"),PACKAGE,PACKAGE_VERSION,
  76             COMMON_ARCH,__DATE__,__TIME__);
  77    if (_config->FindB("version") == true)
  78       return 0;
  79
  80    cout <<
  81     _("Usage: apt-config [options] command\n"
  82       "\n"
  83       "apt-config is a simple tool to read the APT config file\n"
  84       "\n"
  85       "Commands:\n"
  86       "   shell - Shell mode\n"
  87       "   dump - Show the configuration\n"
  88       "\n"
  89       "Options:\n"
  90       "  -h   This help text.\n"
  91       "  -c=? Read this configuration file\n"
  92       "  -o=? Set an arbitrary configuration option, eg -o dir::cache=/tmp\n");
  93    return 0;
  94 }
  95                                                                         /*}}}*/
  96 int main(int argc,const char *argv[])                                   /*{{{*/
  97 {
  98    CommandLine::Args Args[] = {
  99       {'h',"help","help",0},
 100       {'v',"version","version",0},
 101       {'c',"config-file",0,CommandLine::ConfigFile},
 102       {'o',"option",0,CommandLine::ArbItem},
 103       {0,0,0,0}};
 104    CommandLine::Dispatch Cmds[] = {{"shell",&DoShell},
 105                                    {"dump",&DoDump},
 106                                    {0,0}};
 107
 108    // Set up gettext support
 109    setlocale(LC_ALL,"");
 110    textdomain(PACKAGE);
 111
 112    // Parse the command line and initialize the package library
 113    CommandLine CmdL(Args,_config);
 114    if (pkgInitConfig(*_config) == false ||
 115        CmdL.Parse(argc,argv) == false ||
 116        pkgInitSystem(*_config,_system) == false)
 117    {
 118       _error->DumpErrors();
 119       return 100;
 120    }
 121
 122    // See if the help should be shown
 123    if (_config->FindB("help") == true ||
 124        CmdL.FileSize() == 0)
 125       return ShowHelp();
 126
 127    std::vector<std::string> const langs = APT::Configuration::getLanguages(true);
 128    _config->Clear("Acquire::Languages");
 129    for (std::vector<std::string>::const_iterator l = langs.begin(); l != langs.end(); ++l)
 130       _config->Set("Acquire::Languages::", *l);
 131
 132    std::vector<std::string> const archs = APT::Configuration::getArchitectures();
 133    _config->Clear("APT::Architectures");
 134    for (std::vector<std::string>::const_iterator a = archs.begin(); a != archs.end(); ++a)
 135       _config->Set("APT::Architectures::", *a);
 136
 137    std::vector<APT::Configuration::Compressor> const compressors = APT::Configuration::getCompressors();
 138    _config->Clear("APT::Compressor");
 139    string conf = "APT::Compressor::";
 140    for (std::vector<APT::Configuration::Compressor>::const_iterator c = compressors.begin(); c != compressors.end(); ++c)
 141    {
 142       string comp = conf + c->Name + "::";
 143       _config->Set(comp + "Name", c->Name);
 144       _config->Set(comp + "Extension", c->Extension);
 145       _config->Set(comp + "Binary", c->Binary);
 146       _config->Set(std::string(comp + "Cost").c_str(), c->Cost);
 147       for (std::vector<std::string>::const_iterator a = c->CompressArgs.begin(); a != c->CompressArgs.end(); ++a)
 148          _config->Set(comp + "CompressArg::", *a);
 149       for (std::vector<std::string>::const_iterator a = c->UncompressArgs.begin(); a != c->UncompressArgs.end(); ++a)
 150          _config->Set(comp + "UncompressArg::", *a);
 151    }
 152
 153    // Match the operation
 154    CmdL.DispatchArg(Cmds);
 155
 156    // Print any errors or warnings found during parsing
 157    if (_error->empty() == false)
 158    {
 159       bool Errors = _error->PendingError();
 160       _error->DumpErrors();
 161       return Errors == true?100:0;
 162    }
 163
 164    return 0;
 165 }
 166                                                                         /*}}}*/