| #!/bin/sh | |
| command="${*}" | |
| printf "Initialized REPL for [%s]\n" "$command" | |
| printf "%s> " "$command" | |
| read -r input | |
| while [ "$input" != "" ]; | |
| do | |
| eval "$command $input" | |
| printf "\n%s> " "$command" | |
| read -r input | |
| done |
$ replify echo
Initialized REPL for [echo]
echo> "Hello, World!"
Hello, World!
echo> "It works!"
It works!
$ replify git
Initialized REPL for [git]
git> init
Initialized empty Git repository in /ebs1/html/test/.git/
git> remote add origin https://your-url/repo.git
git> checkout -b new-branch
Switched to a new branch 'new-branch'
git> push
| #!/bin/sh | |
| kazinator 1 day ago [-] | |
| Here is my version: | |
| #!/bin/bash | |
| printf "REPL for %s\n" "$@" | |
| notblank() | |
| { | |
| [ $# -gt 0 ] | |
| } | |
| while true ; do | |
| printf "%s> " "$@" | |
| read -r || break; | |
| notblank $REPLY || continue; | |
| eval command \"\$@\" "$REPLY" | |
| done | |
| We keep the original parameters and expand them with "$@". There is a Bash feature that read with no args reads the line into the REPLY variable. We want that to be subject to splitting. | |
| If $REPLY expands to nothing, including multiple whitespace, then we just want to print the prompt again: not quit and not run the command with no additional arguments. | |
| The eval trick allows $REPLY to undergo expansion and splitting, so that shell syntax can freely be used in the REPL. | |
| Test: | |
| $ ~/test/replify/replify.sh git | |
| REPL for git | |
| git> rev-parse HEAD | |
| 7ac594319e417266764a6bc041b74807f2fe13bd | |
| git> branch -r | |
| origin/HEAD -> origin/master | |
| origin/master | |
| origin/origin/master | |
| git> checkout "$TERM $TERM" | |
| error: pathspec 'xterm xterm' did not match any file(s) known to git. | |
| git> checkout $TERM | |
| error: pathspec 'xterm' did not match any file(s) known to git. | |
| Cute, but not terribly useful without history recall and related features. This wants to be a feature of Bash. The regular Bash repl should have a prefix variable so it can appear to be in a sub-mode for a particular command. | |
| Submit a patch for Bash to do this, and maybe you have something. Bash has a hook feature for command execution, IIRC, so this may be somehow doable without modifying Bash. | |
| https://news.ycombinator.com/item?id=12322035 |
See mchav/With for a similar tool that has more features.
Use https://github.com/hanslub42/rlwrap and then rlwrap replify ...