fromcwd.cc

   1 /*
   2  * Copyright (c) 2000, Red Hat, Inc.
   3  *
   4  *     This program is free software; you can redistribute it and/or modify
   5  *     it under the terms of the GNU General Public License as published by
   6  *     the Free Software Foundation; either version 2 of the License, or
   7  *     (at your option) any later version.
   8  *
   9  *     A copy of the GNU General Public License can be found at
  10  *     http://www.gnu.org/
  11  *
  12  * Written by DJ Delorie <dj@cygnus.com>
  13  *
  14  */
  15
  16 /* The purpose of this file is to handle the case where we're
  17    installing from files that already exist in the current directory.
  18    If a setup.ini file is present, we set the mirror site to "." and
  19    pretend we're installing from the `internet' ;-) else we have to
  20    find all the .tar.gz files, deduce their versions, and try to
  21    compare versions in the case where the current directory contains
  22    multiple versions of any given package.  We do *not* try to compare
  23    versions with already installed packages; we always choose a
  24    package in the current directory over one that's already installed
  25    (otherwise, why would you have asked to install it?).  Note
  26    that we search recursively. */
  27
  28 #if 0
  29 static const char *cvsid =
  30   "\n%%% $Id$\n";
  31 #endif
  32
  33 #include "win32.h"
  34
  35 #include <stdio.h>
  36 #include <stdlib.h>
  37 #include <unistd.h>
  38
  39 #include "resource.h"
  40 #include "state.h"
  41 #include "dialog.h"
  42 #include "msg.h"
  43 #include "find.h"
  44 #include "ScanFindVisitor.h"
  45 #include "filemanip.h"
  46
  47 #include "IniDBBuilderPackage.h"
  48 #include "IniParseFeedback.h"
  49
  50 /* Trivial class for detecting the existence of setup.ini */
  51
  52 class SetupFindVisitor : public FindVisitor
  53 {
  54 public:
  55   SetupFindVisitor (): found(false){}
  56   virtual void visitFile(String const &basePath, const WIN32_FIND_DATA *theFile)
  57     {
  58       if (!String ("setup.ini").casecompare(theFile->cFileName) &&
  59           (theFile->nFileSizeLow || theFile->nFileSizeHigh))
  60         found = true;
  61     }
  62   virtual ~ SetupFindVisitor (){}
  63   operator bool () const {return found;}
  64 protected:
  65   SetupFindVisitor (SetupFindVisitor const &);
  66   SetupFindVisitor & operator= (SetupFindVisitor const &);
  67 private:
  68   bool found;
  69 };
  70
  71 bool
  72 do_fromcwd (HINSTANCE h, HWND owner)
  73 {
  74   // Assume we won't find the INI file.
  75   SetupFindVisitor found_ini;
  76   Find(".").accept(found_ini);
  77   if (found_ini)
  78     {
  79       // Found INI, load it.
  80       return true;
  81     }
  82
  83   IniParseFeedback myFeedback;
  84   IniDBBuilderPackage myBuilder(myFeedback);
  85   ScanFindVisitor myVisitor (myBuilder);
  86   Find(".").accept(myVisitor);
  87   return false;
  88 }