view release on metacpan or  search on metacpan

ppport.h  view on Meta::CPAN

  for $ix (0 .. $#ccom) {
    if (!$opt{cplusplus} && $ccom[$ix] =~ s!^//!!) {
      $cppc++;
      $file{changes} += $c =~ s/$rccs$ix$rcce/$ccs$ccom[$ix] $cce/;
    }
    else {
      $c =~ s/$rccs$ix$rcce/$ccom[$ix]/;
    }
  }

  if ($cppc) {
    my $s = $cppc != 1 ? 's' : '';
    warning("Uses $cppc C++ style comment$s, which is not portable");
  }

  my $s = $warnings != 1 ? 's' : '';
  my $warn = $warnings ? " ($warnings warning$s)" : '';
  info("Analysis completed$warn");

  if ($file{changes}) {
    if (exists $opt{copy}) {
      my $newfile = "$filename$opt{copy}";
      if (-e $newfile) {
        error("'$newfile' already exists, refusing to write copy of '$filename'");
      }
      else {
        local *F;
        if (open F, ">$newfile") {
          info("Writing copy of '$filename' with changes to '$newfile'");
          print F $c;
          close F;
        }
        else {
          error("Cannot open '$newfile' for writing: $!");
        }
      }
    }
    elsif (exists $opt{patch} || $opt{changes}) {
      if (exists $opt{patch}) {
        unless ($patch_opened) {
          if (open PATCH, ">$opt{patch}") {
            $patch_opened = 1;
          }
          else {
            error("Cannot open '$opt{patch}' for writing: $!");
            delete $opt{patch};
            $opt{changes} = 1;
            goto fallback;
          }
        }
        mydiff(\*PATCH, $filename, $c);
      }
      else {
fallback:
        info("Suggested changes:");
        mydiff(\*STDOUT, $filename, $c);
      }
    }
    else {
      my $s = $file{changes} == 1 ? '' : 's';
      info("$file{changes} potentially required change$s detected");
    }
  }
  else {
    info("Looks good");
  }
}

close PATCH if $patch_opened;

exit 0;


sub try_use { eval "use @_;"; return $@ eq '' }

sub mydiff
{
  local *F = shift;
  my($file, $str) = @_;
  my $diff;

  if (exists $opt{diff}) {
    $diff = run_diff($opt{diff}, $file, $str);
  }

  if (!defined $diff and try_use('Text::Diff')) {
    $diff = Text::Diff::diff($file, \$str, { STYLE => 'Unified' });
    $diff = <<HEADER . $diff;
--- $file
+++ $file.patched
HEADER
  }

  if (!defined $diff) {
    $diff = run_diff('diff -u', $file, $str);
  }

  if (!defined $diff) {
    $diff = run_diff('diff', $file, $str);
  }

  if (!defined $diff) {
    error("Cannot generate a diff. Please install Text::Diff or use --copy.");
    return;
  }

  print F $diff;
}

sub run_diff
{
  my($prog, $file, $str) = @_;
  my $tmp = 'dppptemp';
  my $suf = 'aaa';
  my $diff = '';
  local *F;

  while (-e "$tmp.$suf") { $suf++ }
  $tmp = "$tmp.$suf";

  if (open F, ">$tmp") {