rcat: cat rewritten in rust

Goal: rewrite cat from GNU's coreutils in rust.

Why? To learn rust and programming.

Installation

requirements: cargo

git clone https://github.com/Skosulor/rcat
cd rcat
cargo build --release

path to rcat: rcat/target/release/rcat

Usage

rcat [FLAGS] [FILE]

if no file is given, input is taken from stdin

Differences from cat

• If show-ends and number-nonblank flags are set the '$' sign in blank lines will have the same line start as numbered lines. This shall be kept as a feature as it looks neater.
• When flag show-nonprinting flag (-v) is set, non-ascii characters are printed as '^?'
• Note: Untested on anything that is not a file, directory or stdin.

Implemented features

• Read file
• print file
• Read from stdin and print
• Handle input error
• Options
  • -A, --show-all equivalent to -vET
  • -b, --number-nonblank
  • -e, equivalent to -vE
  • -E, --show-ends
  • -n, --number
  • -s, --squeeze blank
  • -t equivalent to -vT
  • -T, --show-tabs
  • -u (ignored)
  • -v, --show-nonprinting
• Print actual control sequences instead of '^?' when show-nonprinting flag is set.
• Add path (if there was one) to error messages

Issues

• FIXED: cannot open non UTF-8 encoded files, e.g. opening a binary file produces an error.