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
  28 #include <locale.h>
  29 #include <iostream>
  30 #include <string>
  31 #include <vector>
  32
  33 #include <apti18n.h>
  34                                                                         /*}}}*/
  35 using namespace std;
  36
  37 // DoShell - Handle the shell command                                   /*{{{*/
  38 // ---------------------------------------------------------------------
  39 /* */
  40 bool DoShell(CommandLine &CmdL)
  41 {
  42    for (const char **I = CmdL.FileList + 1; *I != 0; I += 2)
  43    {
  44       if (I[1] == 0 || strlen(I[1]) == 0)
  45          return _error->Error(_("Arguments not in pairs"));
  46
  47       string key = I[1];
  48       if (key.end()[-1] == '/') // old directory format
  49          key.append("d");
  50
  51       if (_config->ExistsAny(key.c_str()))
  52          cout << *I << "='" <<
  53                  SubstVar(_config->FindAny(key.c_str()),"'","'\\''") << '\'' << endl;
  54
  55    }
  56
  57    return true;
  58 }
  59                                                                         /*}}}*/
  60 // DoDump - Dump the configuration space                                /*{{{*/
  61 // ---------------------------------------------------------------------
  62 /* */
  63 bool DoDump(CommandLine &CmdL)
  64 {
  65    _config->Dump(cout);
  66    return true;
  67 }
  68                                                                         /*}}}*/
  69 // ShowHelp - Show the help screen                                      /*{{{*/
  70 // ---------------------------------------------------------------------
  71 /* */
  72 int ShowHelp()
  73 {
  74    ioprintf(cout,_("%s %s for %s compiled on %s %s\n"),PACKAGE,VERSION,
  75             COMMON_ARCH,__DATE__,__TIME__);
  76    if (_config->FindB("version") == true)
  77       return 0;
  78
  79    cout <<
  80     _("Usage: apt-config [options] command\n"
  81       "\n"
  82       "apt-config is a simple tool to read the APT config file\n"
  83       "\n"
  84       "Commands:\n"
  85       "   shell - Shell mode\n"
  86       "   dump - Show the configuration\n"
  87       "\n"
  88       "Options:\n"
  89       "  -h   This help text.\n"
  90       "  -c=? Read this configuration file\n"
  91       "  -o=? Set an arbitrary configuration option, eg -o dir::cache=/tmp\n");
  92    return 0;
  93 }
  94                                                                         /*}}}*/
  95 int main(int argc,const char *argv[])                                   /*{{{*/
  96 {
  97    CommandLine::Args Args[] = {
  98       {'h',"help","help",0},
  99       {'v',"version","version",0},
 100       {'c',"config-file",0,CommandLine::ConfigFile},
 101       {'o',"option",0,CommandLine::ArbItem},
 102       {0,0,0,0}};
 103    CommandLine::Dispatch Cmds[] = {{"shell",&DoShell},
 104                                    {"dump",&DoDump},
 105                                    {0,0}};
 106
 107    // Set up gettext support
 108    setlocale(LC_ALL,"");
 109    textdomain(PACKAGE);
 110
 111    // Parse the command line and initialize the package library
 112    CommandLine CmdL(Args,_config);
 113    if (pkgInitConfig(*_config) == false ||
 114        CmdL.Parse(argc,argv) == false ||
 115        pkgInitSystem(*_config,_system) == false)
 116    {
 117       _error->DumpErrors();
 118       return 100;
 119    }
 120
 121    // See if the help should be shown
 122    if (_config->FindB("help") == true ||
 123        CmdL.FileSize() == 0)
 124       return ShowHelp();
 125
 126    std::vector<std::string> const langs = APT::Configuration::getLanguages(true);
 127    _config->Clear("Acquire::Languages");
 128    for (std::vector<std::string>::const_iterator l = langs.begin(); l != langs.end(); ++l)
 129       _config->Set("Acquire::Languages::", *l);
 130
 131    std::vector<std::string> const archs = APT::Configuration::getArchitectures();
 132    _config->Clear("APT::Architectures");
 133    for (std::vector<std::string>::const_iterator a = archs.begin(); a != archs.end(); ++a)
 134       _config->Set("APT::Architectures::", *a);
 135
 136    // Match the operation
 137    CmdL.DispatchArg(Cmds);
 138
 139    // Print any errors or warnings found during parsing
 140    if (_error->empty() == false)
 141    {
 142       bool Errors = _error->PendingError();
 143       _error->DumpErrors();
 144       return Errors == true?100:0;
 145    }
 146
 147    return 0;
 148 }
 149                                                                         /*}}}*/