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## add_trace.pl
## Script to add a kDebug() call as the first line of each method
## including as many parameters as possible (i.e. those supported by kDebug)
## Very useful for tracing.
##
## Usage: perl -i add_trace.pl myfile.cpp
##
## Generates all statement with kDebug(0) so that it is very easy
## to remove them afterwards :
## perl -pi -e 'if (/kDebug\(0\)/) { $_ = ""; }' myfile.cpp
##
## Copyright 2000, 2002 David Faure <faure@kde.org>
## Copyright 2005-2006, 2008 Thorsten Staerk <kde@staerk.de>
## Copyright 2006 Laurent Montel <montel@kde.org>
##
## Redistribution and use in source and binary forms, with or without
## modification, are permitted provided that the following conditions
## are met:
##
## 1. Redistributions of source code must retain the above copyright
## notice, this list of conditions and the following disclaimer.
## 2. Redistributions in binary form must reproduce the above copyright
## notice, this list of conditions and the following disclaimer in the
## documentation and/or other materials provided with the distribution.
##
## THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
## IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
## OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
## IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
## INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
## NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
## THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
if (scalar (@ARGV) == 0)
{
print "This program puts in debugging output into a program. At the beginning of every function, there is ";
print "a line inserted saying which function starts at the moment.";
exit(0);
}
my $line="";
$insignature=0;
while (<>)
{
if ( $insignature )
{
$statement .= $_;
chop;
$oneline .= $_;
}
elsif ( /^\/\/.*/)
{
# comment
# do nothing
$insignature = 0;
}
# [^\s]+ means, one ore more characters that are no spaces
elsif ( /^[^\s]+\s*[^\s]+::[^\s]+.*\}/ && !/typedef\s/ && !/^\s*class\s/ )
{
# declaration and implementation in one line
# do nothing
$insignature = 0;
}
elsif ( /^[^\s]+\s*[^\s]+::[^\s]+/ && !/typedef\s/ && !/^\s*class\s/ )
{
$insignature = 1;
$statement = $_;
chop;
$oneline = $_;
}
if ( $insignature )
{
if ( /\{/ ) # End of signature
{
$insignature = 0;
$_ = $oneline;
#print STDERR "Signature : $_\n";
print $statement;
$line = "kDebug(0)";
if ( m/([^\*\s]+::[^\s]+)\(/ )
{
$line = $line . " << \"Entering function\"";
}
## Ok now extract args
s/^.*\([\s]*//; # Remove everything before first '('
s/\s*\)\s*:\s+.*$/,/; # Remove any ") : blah", replace with a ','
s/\s*\).*\{\s*$/,/; # Remove anything after ')', replace with a ','
s/ const / /g; # Replace every "const" by a space
#print STDERR "Args list : $_\n";
@args = split( ",", $_ );
foreach (@args)
{
s/^\s*//;
s/\s*$//;
#print STDERR "Argument: $_\n";
## Pointer ?
if ( m/[a-zA-Z0-9_\s]+\*\s*([a-zA-Z0-9_]+)/ ) {
$line = $line . " << \" $1=\" << " . $1;
}
## int, long ?
elsif ( m/^int\s+([a-zA-Z0-9_]+)/ || m/^long\s*([a-zA-Z0-9_]+)/ ) {
$line = $line . " << \" $1=\" << " . $1;
}
## bool
elsif ( m/^bool\s+([a-zA-Z0-9_]+)/ ) {
$line = $line . " << \" $1=\" << (" . $1 . " ? \"true\" : \"false\" )";
}
## QString and friends
elsif ( m/QString[\&\s]+([a-zA-Z0-9_]+)/ || m/QCString[\&\s]*([a-zA-Z0-9_]+)/ ) {
$line = $line . " << \" $1=\" << " . $1;
}
## KUrl
elsif ( m/KUrl[\&\s]+([a-zA-Z0-9_]+)/ ) {
$line = $line . " << \" $1=\" << " . $1 . ".url()";
}
}
$line = $line . " << endl;\n";
#print STDERR "Debug call added : $line\n";
}
}
else
{
$readline=$_;
if ( $line ) # there is something to insert
{
if (/( *).*/) { $line=$1.$line; } # indent
if ($readline eq $line)
{
$line="";
}
else
{
print $line;
$line="";
}
}
# Normal line
print $readline;
}
}
if ( $insignature )
{
print STDERR "Warning, unterminated method signature !! Check the file !\n";
print $statement;
}
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