#! /usr/bin/env perl

# this script is written by Stephan Kulow <coolo@kde.org> with
# much help from Sirtaj Singh Kang <ssk@physics.unimelb.edu.au>

if ($ARGV[0]) {
  $topdir = $ARGV[0];
} else {
  $topdir=`pwd`;
}
chomp $topdir;

$lastdir = '.';


# this is the important part. Left from the '=>' you find the regular
# expression for the g++ output and right from '=>' the header file to
# include
%messages = 
(
 'implicit declaration of function `int i18n\(\.\.\.\)\'' => "klocale",
 '`i18n\' undeclared \(first use this function\)' => "klocale",
 'variable `class QPixmap \S*\' has initializer but incomplete type' => "qpixmap",
 '`kapp\' undeclared \(first use this function\)' => "kapplication",
 'no matching function for call to `KLocale::' => "klocale",
 '`klocale\' undeclared \(first use this function\)' => "klocale",
 'no matching function for call to `QPopupMenu::' => "qpopupmenu",
 '`QTextStream\' undeclared \(first use this function\)' => "qtextstream",
 '`QTextStream\' was not declared in this scope' => "qtextstream",
 'incomplete type `QSocketNotifier\'' => "qsocketnotifier",
 'no matching function for call to `TDEConfig' => "kconfig",
 'variable `class TDEConfig \S*\' has initializer but incomplete type' => "kconfig",
 'implicit declaration of function `int kdDebug' => "kdebug",
 'implicit declaration of function `int kdWarning' => "kdebug",
 '`QFile\' undeclared \(first use this function' => "qfile",
 'variable `QFile \S*\' has initializer but incomplete type' => "qfile",
 'type `TDEConfigBase\' is not a base type for type `TDEConfig' => "kconfig",
 'invalid use of undefined type `class QAccel' => "qaccel",
 'invalid use of undefined type `class TDEAboutData' => "kaboutdata",
 'incomplete type `TDEAboutData\'' => "kaboutdata",
 'incomplete type `QGrid\'' => "qgrid",
 'invalid use of undefined type `class QGrid\'' => "qgrid",
 'aggregate `class TDEConfig \S*\' has incomplete type' => "kconfig",
 '`stderr\' undeclared \(first use this function' => "stdio",
 'invalid use of undefined type `class TDEConfig' => "kconfig",
 'implicit declaration of function `int f?printf' => "stdio",
 'no method `TDEGlobal::' => "kglobal",
 '`TDEGlobal\' undeclared \(first use this function\)' => "kglobal",
 'implicit declaration of function `int locate\(\.\.\.\)' => "kstddirs",
 '`locate\' undeclared \(first use this function\)' => "kstddirs",
 'no matching function for call to `KStandardDirs' => "kstddirs",
 'no method `KStandardDirs::' => "kstddirs",
 'variable `class QFile \S*\' has initializer but incomplete type' => "qfile",
 'implicit declaration of function `int ICON\(\.\.\.\)' => "kiconloader",
 '`QMessageBox\' undeclared \(first use this function\)' => "qmessagebox",
 'no matching function for call to `QBoxLayout::QBoxLayout' => "qlayout",
 '`QUriDrag\' undeclared \(first use this function\)' => "qdragobject",
 '`kdDebug\' undeclared \(first use this function\)' => "kdebug",
 '`kdWarning\' undeclared \(first use this function\)' => "kdebug",
 'no matching function for call to `KMenuBar::insertItem\(QString, KPopupMenu' => "kpopupmenu",
 'no matching function for call to `KMenuBar::' => "kmenubar",
 'invalid use of undefined type `class QPointArray' => "qpointarray",
 'variable `QPainter \S*\' has initializer but incomplete type' => "qpainter",
 'invalid use of undefined type `class QRegExp' => "qregexp",
 'invalid use of undefined type `class QPushButton' => "qpushbutton",
 'cannot convert `QPushButton \*\' to `QButton \*' => "qpushbutton",
 'invalid use of undefined type `class QButton' => "qbutton",
 '`QButton\' undeclared \(first use this function\)' => "qbutton",
 'no method `QCursor::pos' => "qcursor",
 '`DesktopIcon\' undeclared \(first use this function\)' => "kiconloader",
 '`BarIcon\' undeclared \(first use this function\)' => "kiconloader",
 '`SmallIcon\' undeclared \(first use this function\)' => "kiconloader",
 '`UserIcon\' undeclared \(first use this function\)' => "kiconloader",
 'implicit declaration of function `int UserIcon\(...\)\'' => "kiconloader",
 '`KIcon\' undeclared \(first use this function\)' => "kiconloader",
 'invalid use of undefined type `class KIconLoader' => "kiconloader",
 'invalid use of undefined type `class TDEInstance' => "kinstance",
 'invalid use of undefined type `class DCOPClient' => "dcopclient",
 '`DCOPClient\' undeclared \(first use this function\)' => "dcopclient",
 'invalid use of undefined type `class KStatusBar\'' => "kstatusbar",
 'invalid use of undefined type `class QLabel\'' => "qlabel",
 'invalid use of undefined type `class QImage\'' => "qimage",
 'invalid use of undefined type `class QImageIO\'' => "qimage",
 'invalid use of undefined type `class QLineEdit\'' => "qlineedit",
 'invalid use of undefined type `class QComboBox\'' => "qcombobox",
 'invalid use of undefined type `class QStyle\'' => "qstyle",
 'invalid use of undefined type `class KPopupMenu\'' => "kpopupmenu",
 'invalid use of undefined type `class QPopupMenu\'' => "qpopupmenu",
 'cannot convert `KPopupMenu \*\' to `QPopupMenu \*' => "kpopupmenu",
 'aggregate `QPopupMenu \S*\' has incomplete type' => "qpopupmenu",
 'invalid use of undefined type `class KURL' => "kurl",
 'no method `QApplication::' => "qapplication",
 'no method `QFile::' => "qfile",
 'error: \'Q3CString\' is used as a type' => "q3cstring",
 'error: ISO C\+\+ forbids declaration of \`Q3CString\' with' => "q3cstring",
 'error: incomplete type \'QPixmap\' cannot be used' => 'qpixmap',
 'error: invalid use of undefined type `struct QVector' => 'qvector',
 'error: incomplete type `Q3ValueList' => 'q3valuelist',
 'error: variable `Q3ValueList<' => 'q3valuelist',
 'error: `Q3PointArray\' undeclared' => 'q3pointarray',
 'error: invalid use of undefined type \`struct QColor' => 'qcolor',
 'error: `QX11Info::' => 'qx11info_x11',
 'error: incomplete type \'QX11Info' => 'qx11info_x11',
 'error: \'Q3AsciiDi' => 'q3asciidict'
);

# Initial values are simply to get into the while
$exitcode=2; # exit-code from last 'make' command
$addedone=1; # 1 when something has been fixed, means we can try again

while ( $exitcode != 0 && $addedone != 0 )
{
 $addedone = 0;

 %changes = ();
 open(INPUT,"makeobj -j10 -k 2>&1 |") || die "Couldn't run makeobj";
 while(<INPUT>)
 {
  if (/make.*Entering directory \`(.+)\'/) {
    $lastdir = $1;
    $lastdir =~ s/^$topdir\///;
    print STDERR "entering $lastdir\n";
    next;
  }
  if (/^([^:]*):\d*: (.*)$/) {
    $file = $1;
    $line = $2;
    if ($file !~ m,^\/,) {
      $file = "$lastdir/$file";
    }
    #print STDERR "file=$file\n";
  } else {
    # This could be a continuation line
    if ( defined $line && $line ne "" ) {
      $line .= $_;
      #print STDERR "file still $file\n";
      #print STDERR "line=$line\n";
    } else {
      # Compilation line, or other unparsable line -> ignore
      print STDOUT $_;
      next;
    }
  }
  
  #print STDERR "Already having changes for $file\n" if defined($changes{$file});
  next if defined($changes{$file});

  print STDOUT $_;

  foreach $message (keys %messages) {
    if ($line =~ /$message/) {
      $changes{$file} = $messages{$message};
      $addedone = fixFile($file, $messages{$message});
    }
  }
  
  if (defined($changes{$file})) { $file=""; $line=""; }
 } # end of while(<INPUT>)
 close(INPUT);
 $exitcode=($?>>8);
} # end of main while

sub fixFile
{
  my( $file, $adding ) = @_;
  
  my $lastinclude = "";

  # read file
  open ( FILE, "$file" ) || die "Can't read $file";
  
  my $flines;
  my $cpplevel = 0;

  while (<FILE>) {
    $flines .= $_;
    if ($_ =~ m/^#if/ && $_ !~ m/^#ifn/) {
       $cpplevel = $cpplevel + 1;
    }
    if ($_ =~ m/^#endif/) {
       $cpplevel = $cpplevel - 1;
    }
    if ($cpplevel == 0 && $_ =~ m/^(#include\s*[\"<]q\S*\.h[\">]\S*)/) {
       $lastinclude = $1;
    }
  }
  
  close FILE;
  
  if (!$lastinclude) {
    print STDERR "ERROR: no include found in $file! (tried to add $adding.h)\n";
    return 0;
  }

  if ($flines =~ m/#include\s*[\"<]$adding\.h[\">]\s*\n/) {
    print STDERR "ERROR: $adding.h already included in $file!\n";
    return 0;
  }
  if ($flines =~ /(\n$lastinclude)/) {
    $flines =~ s/$lastinclude(.*\n)/$lastinclude$1#include <$adding.h>\n/;
    print STDERR "ADDED <$adding.h> after \"$lastinclude\" in $file\n";
  } else {
    print STDERR "ERROR: can't find $lastinclude in $file\n";
    return 0;
  }
	    
  # write file
      
  rename($file, "$file.old");
  open( FILE, ">$file" ) || die "Can't write to $file";
  print FILE $flines;    
  close FILE;
  return 1;
}