Default block factory

The block factory is the process that splits legacy screens into elementary blocks.

For extraction purpose, legacy application screens are broken into elementary entities called blocks. The process in charge of generating blocks is called Default block factory.

The block generation process can be divided into three major steps:

• The block factory analyses screen lines.
• For each line, the block factory extracts character strings having same attributes (text color, background color, bold, blinking…).
• For each character string having same attributes, the block factory breaks sentences into single words by performing a separation on blank spaces. For example, the sentence the_nice_hat (where “_” represents a blank space) is divided into five blocks: the, _, nice, _ and hat. Consecutive blank spaces are grouped into one single block.