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			112 lines
		
	
	
	
		
			2.9 KiB
		
	
	
	
		
			Perl
		
	
	
	
	
	
			
		
		
	
	
			112 lines
		
	
	
	
		
			2.9 KiB
		
	
	
	
		
			Perl
		
	
	
	
	
	
# -*- cperl -*-
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# Copyright (c) 2004-2008 MySQL AB, 2008 Sun Microsystems, Inc.
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# Use is subject to license terms.
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# 
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; version 2 of the License.
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# 
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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# GNU General Public License for more details.
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# 
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1335  USA
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# This is a library file used by the Perl version of mysql-test-run,
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# and is part of the translation of the Bourne shell script with the
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# same name.
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use strict;
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use Carp;
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use My::Platform;
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sub mtr_fromfile ($);
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sub mtr_tofile ($@);
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sub mtr_tonewfile($@);
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sub mtr_appendfile_to_file ($$);
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sub mtr_grab_file($);
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sub mtr_printfile($);
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sub mtr_lastlinesfromfile ($$);
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# Read a whole file, stripping leading and trailing whitespace.
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sub mtr_fromfile ($) {
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  my $file=  shift;
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  open(FILE,"<",$file) or mtr_error("can't open file \"$file\": $!");
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  my $text= join('', <FILE>);
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  close FILE;
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  $text =~ s/^\s+//;                    # Remove starting space, incl newlines
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  $text =~ s/\s+$//;                    # Remove ending space, incl newlines
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  return $text;
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}
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sub mtr_tofile ($@) {
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  my $file=  shift;
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  my $fh= open_for_append $file;
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  mtr_error("can't open file \"$file\": $!") unless defined($fh);
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  print $fh join("", @_);
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  close $fh;
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}
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sub mtr_tonewfile ($@) {
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  my $file=  shift;
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  open(FILE,">",$file) or mtr_error("can't open file \"$file\": $!");
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  print FILE join("", @_);
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  close FILE;
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}
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sub mtr_appendfile_to_file ($$) {
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  my $from_file=  shift;
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  my $to_file=  shift;
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  open(TOFILE,">>",$to_file) or mtr_error("can't open file \"$to_file\": $!");
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  open(FROMFILE,"<",$from_file)
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    or mtr_error("can't open file \"$from_file\": $!");
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  print TOFILE while (<FROMFILE>);
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  close FROMFILE;
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  close TOFILE;
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}
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# Read a whole file verbatim.
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sub mtr_grab_file($) {
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  my $file= shift;
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  open(FILE, '<', $file)
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    or return undef;
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  local $/= undef;
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  my $data= scalar(<FILE>);
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  close FILE;
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  return $data;
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}
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# Print the file to STDOUT
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sub mtr_printfile($) {
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  my $file= shift;
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  open(FILE, '<', $file)
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    or warn $!;
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  print while(<FILE>);
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  close FILE;
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  return;
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}
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sub mtr_lastlinesfromfile ($$) {
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  croak "usage: mtr_lastlinesfromfile(file,numlines)" unless (@_ == 2);
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  my ($file, $num_lines)= @_; 
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  my $text;
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  open(FILE,"<",$file) or mtr_error("can't open file \"$file\": $!");
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  my @lines= reverse <FILE>;
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  close FILE;
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  my $size= scalar(@lines);
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  $num_lines= $size unless ($size >= $num_lines);
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  return join("", reverse(splice(@lines, 0, $num_lines)));
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}
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1;
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