hidden support more apt-get/apt-cache commands in apt

[apt.git] / apt-private / private-cmndline.cc

diff --git a/apt-private/private-cmndline.cc b/apt-private/private-cmndline.cc
index c99a0afe01588096dfc761df9bf2e74804ef210a..348b698cadf7a4f3deb9479b42b1c31d0ad19480 100644 (file)
--- a/apt-private/private-cmndline.cc
+++ b/apt-private/private-cmndline.cc
@@ -362,6 +362,25 @@ std::vector<CommandLine::Args> getCommandArgs(APT_CMD const Program, char const
                                                                        /*}}}*/
 #undef CmdMatches
 #undef addArg
+static bool ShowCommonHelp(APT_CMD const Binary, CommandLine &CmdL, aptDispatchWithHelp const * Cmds)/*{{{*/
+{
+   std::cout << PACKAGE << " " << PACKAGE_VERSION << " (" << COMMON_ARCH << ")" << std::endl;
+   if (_config->FindB("version") == true && Binary != APT_CMD::APT_GET)
+      return true;
+   return ShowHelp(CmdL, Cmds);
+}
+                                                                       /*}}}*/
+void ShowHelpListCommands(aptDispatchWithHelp const * Cmds)            /*{{{*/
+{
+   std::cout << _("Commands:") << std::endl;
+   for (; Cmds->Handler != nullptr; ++Cmds)
+   {
+      if (Cmds->Help == nullptr)
+        continue;
+      std::cout << "  " << Cmds->Match << " - " << Cmds->Help << std::endl;
+   }
+}
+                                                                       /*}}}*/
 static void BinarySpecificConfiguration(char const * const Binary)     /*{{{*/
 {
    std::string const binary = flNotDir(Binary);
@@ -383,7 +402,7 @@ static void BinarySpecificConfiguration(char const * const Binary)  /*{{{*/
    _config->MoveSubTree(conf.c_str(), NULL);
 }
                                                                        /*}}}*/
-std::vector<CommandLine::DispatchWithHelp> ParseCommandLine(CommandLine &CmdL, APT_CMD const Binary,/*{{{*/
+std::vector<CommandLine::Dispatch> ParseCommandLine(CommandLine &CmdL, APT_CMD const Binary,/*{{{*/
       Configuration * const * const Cnf, pkgSystem ** const Sys, int const argc, const char *argv[])
 {
    if (Cnf != NULL && pkgInitConfig(**Cnf) == false)
@@ -395,7 +414,16 @@ std::vector<CommandLine::DispatchWithHelp> ParseCommandLine(CommandLine &CmdL, A
    if (likely(argc != 0 && argv[0] != NULL))
       BinarySpecificConfiguration(argv[0]);
 
-   std::vector<CommandLine::DispatchWithHelp> const Cmds = GetCommands();
+   std::vector<aptDispatchWithHelp> const CmdsWithHelp = GetCommands();
+   std::vector<CommandLine::Dispatch> Cmds;
+   if (CmdsWithHelp.empty() == false)
+   {
+      CommandLine::Dispatch const help = { "help", [](CommandLine &){return false;} };
+      Cmds.push_back(std::move(help));
+   }
+   for (auto const& cmd : CmdsWithHelp)
+      Cmds.push_back({cmd.Match, cmd.Handler});
+
    // Args running out of scope invalidates the pointer stored in CmdL,
    // but we don't use the pointer after this function, so we ignore
    // this problem for now and figure something out if we have to.
@@ -410,7 +438,7 @@ std::vector<CommandLine::DispatchWithHelp> ParseCommandLine(CommandLine &CmdL, A
        (Sys != NULL && pkgInitSystem(*_config, *Sys) == false))
    {
       if (_config->FindB("version") == true)
-        ShowHelp(CmdL, Cmds.data());
+        ShowCommonHelp(Binary, CmdL, CmdsWithHelp.data());
 
       _error->DumpErrors();
       exit(100);
@@ -420,18 +448,18 @@ std::vector<CommandLine::DispatchWithHelp> ParseCommandLine(CommandLine &CmdL, A
    if (_config->FindB("help") == true || _config->FindB("version") == true ||
         (CmdL.FileSize() > 0 && strcmp(CmdL.FileList[0], "help") == 0))
    {
-      ShowHelp(CmdL, Cmds.data());
+      ShowCommonHelp(Binary, CmdL, CmdsWithHelp.data());
       exit(0);
    }
    if (Cmds.empty() == false && CmdL.FileSize() == 0)
    {
-      ShowHelp(CmdL, Cmds.data());
+      ShowCommonHelp(Binary, CmdL, CmdsWithHelp.data());
       exit(1);
    }
    return Cmds;
 }
                                                                        /*}}}*/
-unsigned short DispatchCommandLine(CommandLine &CmdL, std::vector<CommandLine::DispatchWithHelp> const &Cmds)  /*{{{*/
+unsigned short DispatchCommandLine(CommandLine &CmdL, std::vector<CommandLine::Dispatch> const &Cmds)  /*{{{*/
 {
    // Match the operation
    bool const returned = Cmds.empty() ? true : CmdL.DispatchArg(Cmds.data());