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 <apt-pkg/cmndline.h>
  20 #include <apt-pkg/error.h>
  21 #include <apt-pkg/init.h>
  22 #include <apt-pkg/strutl.h>
  23
  24 #include <config.h>
  25 #include <apti18n.h>
  26
  27 #include <locale.h>
  28 #include <iostream>
  29 #include <string>
  30                                                                         /*}}}*/
  31 using namespace std;
  32
  33 // DoShell - Handle the shell command                                   /*{{{*/
  34 // ---------------------------------------------------------------------
  35 /* */
  36 bool DoShell(CommandLine &CmdL)
  37 {
  38    for (const char **I = CmdL.FileList + 1; *I != 0; I += 2)
  39    {
  40       if (I[1] == 0 || strlen(I[1]) == 0)
  41          return _error->Error(_("Arguments not in pairs"));
  42
  43       string key = I[1];
  44       if (key.end()[-1] == '/') // old directory format
  45          key.append("d");
  46
  47       if (_config->ExistsAny(key.c_str()))
  48          cout << *I << "='" <<
  49                  SubstVar(_config->FindAny(key.c_str()),"'","'\\''") << '\'' << endl;
  50
  51    }
  52
  53    return true;
  54 }
  55                                                                         /*}}}*/
  56 // DoDump - Dump the configuration space                                /*{{{*/
  57 // ---------------------------------------------------------------------
  58 /* */
  59 bool DoDump(CommandLine &CmdL)
  60 {
  61    _config->Dump(cout);
  62    return true;
  63 }
  64                                                                         /*}}}*/
  65 // ShowHelp - Show the help screen                                      /*{{{*/
  66 // ---------------------------------------------------------------------
  67 /* */
  68 int ShowHelp()
  69 {
  70    ioprintf(cout,_("%s %s for %s %s compiled on %s %s\n"),PACKAGE,VERSION,
  71             COMMON_OS,COMMON_CPU,__DATE__,__TIME__);
  72    if (_config->FindB("version") == true)
  73       return 0;
  74
  75    cout <<
  76     _("Usage: apt-config [options] command\n"
  77       "\n"
  78       "apt-config is a simple tool to read the APT config file\n"
  79       "\n"
  80       "Commands:\n"
  81       "   shell - Shell mode\n"
  82       "   dump - Show the configuration\n"
  83       "\n"
  84       "Options:\n"
  85       "  -h   This help text.\n"
  86       "  -c=? Read this configuration file\n"
  87       "  -o=? Set an arbitrary configuration option, eg -o dir::cache=/tmp\n");
  88    return 0;
  89 }
  90                                                                         /*}}}*/
  91
  92 int main(int argc,const char *argv[])
  93 {
  94    CommandLine::Args Args[] = {
  95       {'h',"help","help",0},
  96       {'v',"version","version",0},
  97       {'c',"config-file",0,CommandLine::ConfigFile},
  98       {'o',"option",0,CommandLine::ArbItem},
  99       {0,0,0,0}};
 100    CommandLine::Dispatch Cmds[] = {{"shell",&DoShell},
 101                                    {"dump",&DoDump},
 102                                    {0,0}};
 103
 104    // Set up gettext support
 105    setlocale(LC_ALL,"");
 106    textdomain(PACKAGE);
 107
 108    // Parse the command line and initialize the package library
 109    CommandLine CmdL(Args,_config);
 110    if (pkgInitConfig(*_config) == false ||
 111        CmdL.Parse(argc,argv) == false ||
 112        pkgInitSystem(*_config,_system) == false)
 113    {
 114       _error->DumpErrors();
 115       return 100;
 116    }
 117
 118    // See if the help should be shown
 119    if (_config->FindB("help") == true ||
 120        CmdL.FileSize() == 0)
 121       return ShowHelp();
 122
 123    // Match the operation
 124    CmdL.DispatchArg(Cmds);
 125
 126    // Print any errors or warnings found during parsing
 127    if (_error->empty() == false)
 128    {
 129       bool Errors = _error->PendingError();
 130       _error->DumpErrors();
 131       return Errors == true?100:0;
 132    }
 133
 134    return 0;
 135 }