Add msvc2tasks.pl for converting MSVC warning logs into .tasks files.

Change-Id: Ief673c06f0456fe1055447383c9fbef5a112d69c
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>

scripts/msvc2tasks.pl

@@ -0,0 +1,27 @@
+#!/usr/bin/perl -w
+
+=head1 NAME
+
+msvc2tasks.pl - Convert MSVC warnings into Qt Creator task files.
+
+=head1 SYNOPSIS
+
+    msvc2tasks.pl < logfile > taskfile
+
+=cut
+
+use strict;
+
+while (my $line = <STDIN> ) {
+    chomp($line);
+    # --- extract file name based matching:
+    # c:\foo.cpp(395) : warning C4800: 'BOOL' : forcing value to bool 'true' or 'false' (performance warning)
+    if ($line =~ /^([^(]+)\((\d+)\) : warning (C\d+:.*)$/) {
+        my $fileName = $1;
+        my $lineNumber = $2;
+        my $text = $3;
+        $fileName =~ s|\\|/|g;
+        $text =~ s|\\|/|g;  # Fix file names mentioned in text since tasks file have backslash-escaping.
+        print $fileName, "\t", $lineNumber, "\twarn\t", $text,"\n";
+    }
+}