private Map findPatchesToApply()

in src/main/java/org/apache/maven/plugin/patch/ApplyMojo.java [318:379]
53 lines of code
9 McCabe index (conditional complexity)

    private Map findPatchesToApply( List foundPatchFiles, File patchSourceDir )
        throws MojoFailureException
    {
        Map patchesApplied = new LinkedHashMap();

        if ( naturalOrderProcessing )
        {
            patches = new ArrayList( foundPatchFiles );
            Collections.sort( patches );
        }

        String alreadyAppliedPatches = "";

        try
        {
            if ( optimizations && patchTrackingFile.exists() )
            {
                alreadyAppliedPatches = FileUtils.fileRead( patchTrackingFile );
            }
        }
        catch ( IOException ioe )
        {
            throw new MojoFailureException( "unable to read patch tracking file: " + ioe.getMessage() );
        }

        for ( Object patche : patches )
        {
            String patch = (String) patche;

            if ( !alreadyAppliedPatches.contains( patch ) )
            {
                File patchFile = new File( patchSourceDir, patch );

                getLog().debug( "Looking for patch: " + patch + " in: " + patchFile );

                if ( !patchFile.exists() )
                {
                    if ( strictPatching )
                    {
                        throw new MojoFailureException( this, "Patch operation cannot proceed.",
                                                        "Cannot find specified patch: \'" + patch
                                                            + "\' in patch-source directory: \'" + patchSourceDir
                                                            + "\'.\n\nEither fix this error, "
                                                            + "or relax strictPatching." );
                    }
                    else
                    {
                        getLog().info( "Skipping patch: " + patch + " listed in the parameter \"patches\"; "
                                           + "it is missing." );
                    }
                }
                else
                {
                    foundPatchFiles.remove( patch );

                    patchesApplied.put( patch, createPatchCommand( patchFile ) );
                }
            }
        }

        return patchesApplied;
    }