Krishna Dwypayan Kota 20172076

OS assignment 1 Text Editor

Kindly execute small files, might be the case that the data structure used would not be able to handle large files

The editor runs in 3 modes -> Normal mode - Open an existing file. - Navigation : Allows scrolling (both horizontal and vertical) using h, j, k, l character keys - Go to first line of file : Pressing ‘gg’ takes the cursor to the first line of the file. - Go to last line of file : Pressing ‘G’ takes the cursor to the last line of the file.

-> Command mode - Implementation using fork/exec system calls to display the various shell commands. - Quit and force quit. - Partial implementation of saving the data.

-> Insert mode - Implementation of Data Structure to store the data from an existing file. - Appending to the file. - insertion and deletion at a particular position. - Bugs while insertion in empty lines - Backspace functionality

-> Switching between modes - Normal to Insert/Edit mode - on pressing key ‘i’. - Insert/Edit to Normal mode OR Command Line to Normal mode - on pressing key “esc”. - Normal to command-line mode - by prefixing “:” in front of your command.

-> Display Characteristics - Status bar displaying the current mode and the current cursor positions - Added text scrolling up/down - Dynamic window sizing