Text Editor application build based on the Data Structure Stack and Object Oriented Programming and File Handling in C++.
A text editor is a program that allows the user to open, view, and edit plain text files (files containing only text). Text editors deal with manipulating text and provide features to enhance the experience. As mentioned before, the major functionalities of text editors are: inserting, deleting, and viewing text. Additional features that are practically required to even compete with other text editors are:find and replace, copy/cut and paste, text formatting, sentence highlighting, and etc.
This approach is most likely only found in programming assignments rather than actual implementation, but it is good practice using stacks. The idea is to use two stacks to maintain the current cursor position. Left stack would contain the contents to the left of the cursor and the right stack would contain the contents to the right cursor. You would just push or pop the elements to get to where you need and either insert or delete text.
We used the cursor position as ‘divider’ and maintained two stacks to hold characters on either side. All characters to the left of the cursor are pushed on the ‘left’ stack All characters to its right are pushed on the ‘right’ stack. Use 2 stacks to depict the text editor
| TASK | OPERATION |
|---|---|
| Insert a character/word | push it on the left Stack |
| Delete a character using DEL | perform pop operation on the right stack |
| Delete a character using Backspace | perform pop operation on the left stack |
| Move cursor to the left | copy the required characters from left stack to right stack |
| Move cursor to the right | copy the required characters from right stack to left stack |
| To replace | Use a combination of move cursor with DEL and insert operations |
