private void scanFile(File file) {
        try {
            InplaceFileConverter fc = new InplaceFileConverter(ruleSet, progressListener);
            fc.convert(file);
        } catch (IOException exc) {
            addException(new ConversionException(exc.toString()));
        }
    }
Convert the specified file Read each line and ask matcher implementation
for conversion Rewrite the line returned by matcher

@param file
slf4j-migrator/src/main/java/org/slf4j/migrator/ProjectConverter.java