Intro

Building my own text editor following antirez's guide.

References

1. unistd.h Man page
2. termios Man page

Progress

• Setup
• Entering raw mode
• Raw input and output
• A text viewer
• A text editor
• Search
• Syntax highlighting

Notes

int tcgetattr(int fd, struct termios *termios_p);

• Retrieves the terminal configuration and stores it in a struct termios.
• fd → File descriptor of the terminal (usually STDIN_FILENO, which is 0). • termios_p → Pointer to a struct termios that stores the settings.
• Return Value:
  • Success •
  • -1 → Error (sets errno)

errno

A global variable in C that stores an error code when a system call or library function fails.

Standard File Descriptors (Macro Value Description)

• STDIN_FILENO (0) → Standard input
• STDOUT_FILENO (1) → Standard output
• STDERR (2) → Standard error

perror

Prints an error message describing the last errno value. perror("Error message”); “Error message” is the prefix here.