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https://github.com/denisidoro/navi
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Add option for searching online repositories (#38)
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Denis Isidoro
GitHub
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12 changed files with 261 additions and 80 deletions
146
README.md
146
README.md
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@ -6,37 +6,91 @@ An interactive cheatsheet tool for the command-line so that you'll never say the
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— *Oh, it's not in my bash history*<br>
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— *Geez, it's almost what I wanted but I need to change some args*
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**navi** allows you to browse through cheatsheets (that you may write yourself or download from maintainers) and execute commands, prompting for argument values.
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## Installation
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Table of Contents
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-----------------
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**Using [brew](https://brew.sh/):**
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```sh
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brew install denisidoro/tools/navi
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```
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* [Installation](#installation)
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* [Using Homebrew or Linuxbrew](#using-homebrew-or-linuxbrew)
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* [Using git](#using-git)
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* [Upgrading](#upgrading)
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* [Usage](#usage)
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* [Preventing execution](#preventing-execution)
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* [Pre-filtering](#pre-filtering)
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* [Searching online repositories](#searching-online-repositories)
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* [More options](#more-options)
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* [Trying out online](#trying-out-online)
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* [Motivation](#motivation)
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* [Cheatsheets](#cheatsheets)
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* [Using your own custom cheatsheets](#using-your-own-custom-cheatsheets)
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* [Submitting cheatsheets](#submitting-cheatsheets)
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* [Cheatsheet syntax](#cheatsheet-syntax)
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* [Syntax overview](#syntax-overview)
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* [Variables](#variables)
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* [FZF options](#fzf-options)
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* [Related projects](#related-projects)
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* [Etymology](#etymology)
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Installation
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------------
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### Using Homebrew or Linuxbrew
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You can use [Homebrew](http://brew.sh/) or [Linuxbrew](http://linuxbrew.sh/)
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to install **navi**.
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### Using git
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Alternatively, you can `git clone` this repository and run `make`:
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**Without brew:**
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```sh
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git clone http://github.com/denisidoro/navi /opt/navi
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git clone --depth 1 http://github.com/denisidoro/navi /opt/navi
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cd /opt/navi
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sudo make install
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# install fzf: https://github.com/junegunn/fzf
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```
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## Usage
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Upgrading
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---------
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Simply call:
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```sh
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navi
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```
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**navi** is being actively developed and you might want to upgrade it once in a while. Please follow the instruction below depending on the installation method used:
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## Trying it out online
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- brew: `brew update; brew reinstall navi`
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- git: `cd /opt/navi && sudo make update`
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Head to [this playground](https://www.katacoda.com/denisidoro/scenarios/navi) for previewing **navi**.
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Usage
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-----
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## Motivation
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By simply running `navi` you will be prompted with the default cheatsheets.
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### Preventing execution
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If you run `navi --print`, the selected command won't be executed. It will be printed to stdout instead.
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### Pre-filtering
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If you run `navi query <cmd>`, the results will be pre-filtered.
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### Searching online repositories
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If you run `navi search <cmd>`, **navi** will try to download cheatsheets from online repositories as well.
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Please note that these cheatsheets aren't curated by **navi**'s maintainers and should be taken with a grain of salt. If you're not sure about executing these commands, make sure to check the preview window or use the `--print` option.
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### More options
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Please refer to `navi --help` for more details.
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Trying out online
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--------------------
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If you don't have access to bash at the moment and you want to live preview **navi**, head to [this playground](https://www.katacoda.com/denisidoro/scenarios/navi). It'll start a docker container with instructions for you to install and use the tool. Note: login required.
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Motivation
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----------
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The main objectives are:
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- to increase discoverability, by finding commands given keywords or descriptions;
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@ -50,23 +104,31 @@ Or you can launch a browser and search for instructions on Google, but that take
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**navi**, on the other hand, intends to be a general purpose platform for bookmarking any command at a very low cost.
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## Using your own cheatsheets
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Cheatsheets
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-----------
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In this case, you need to pass the directory which contains `.cheat` files as in:
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### Using your own custom cheatsheets
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In this case, you need to pass a `:`-separated list of separated directories which contain `.cheat`:
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```sh
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navi --dir "/folder/with/cheats"
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navi --path "/folder/with/cheats"
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```
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Alternatively, you can set an environment variable in your `.bashrc`-like file:
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```sh
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export NAVI_DIR="/folder/with/cheats"
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export NAVI_PATH="/folder/with/cheats:/another/folder"
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```
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## Submitting cheatsheets
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### Submitting cheatsheets
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Feel free to fork this project and open a PR for me to include your contributions.
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## .cheat syntax
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Cheatsheet syntax
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-----------------
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Cheatsheets are describe in `.cheat` files.
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### Syntax overview
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- lines starting with `%` should contain tags which will be added to any command in a given file;
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- lines starting with `#` should be descriptions of commands;
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@ -83,16 +145,40 @@ git checkout <branch>
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$ branch: git branch | awk '{print $NF}'
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```
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For advanced usage, please refer to the files in [/cheats](https://github.com/denisidoro/navi/tree/master/cheats).
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### Variables
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## Alternatives
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The interface prompts for variable names inside brackets (eg `<branch>`).
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- [cmdmenu](https://github.com/amacfie/cmdmenu);
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- [denisidoro/beavr](https://github.com/denisidoro/beavr);
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- [how2](https://github.com/santinic/how2);
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- [howdoi](https://github.com/gleitz/howdoi);
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- [cheat](https://github.com/cheat/cheat).
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The command for generating possible inputs can refer other variables:
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```sh
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# If you select 2 for x, the possible values of y will be 12 and 22
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echo <x> <y>
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## Etymology
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$ x: echo -e '1\n2\n3' | tr '\n' ' '
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$ y: echo "$((x+10))" "$((x+20))" | tr '\n' ' '
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```
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### FZF options
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You can make pick a specific column of a selection and set the number of lines considered as headers:
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```sh
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# This will pick the 3rd column and use the first line as header
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docker rmi <image_id>
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$ image_id: docker images --- --headers 1 --column 3
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```
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Related projects
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----------------
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There are many similar projects out there ([bro](https://github.com/hubsmoke/bro), [eg](https://github.com/srsudar/eg), [cheat.sh](https://github.com/chubin/cheat.sh), [cmdmenu](https://github.com/amacfie/cmdmenu), [cheat](https://github.com/cheat/cheat), [beavr](https://github.com/denisidoro/beavr), [how2](https://github.com/santinic/how2) and [howdoi](https://github.com/gleitz/howdoi), to name a few).
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Most of them provide excellent cheatsheet repositories, but lack a nice UI.
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In any case, **navi** has the option to [search for some of these repositories](#installation).
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Etymology
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---------
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In [The Legend of Zelda Ocarina of Time](https://zelda.gamepedia.com/Ocarina_of_Time), [navi](https://zelda.gamepedia.com/Navi) is a character that provides [Link](https://zelda.gamepedia.com/Link) with a variety of clues to help him solve puzzles and progress in his quest.
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@ -1,4 +1,4 @@
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% awk, text processing, string
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% awk, string
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# Print nth column
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awk '{print $<n>}
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# Print last column
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echo '1 2 3' | awk '{print $NF}'
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@ -10,4 +10,4 @@ netstat -tn 2>/dev/null | grep :<port> | awk '{print $5}' | cut -d: -f1 | sort |
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dig +short myip.opendns.com @resolver1.opendns.com
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# Find primary, local IP address
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ifconfig | grep -Eo 'inet (addr:)?([0-9]*\.){3}[0-9]*' | grep -Eo '([0-9]*\.){3}[0-9]*' | grep -v '127.0.0.1'
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ifconfig | grep -Eo 'inet (addr:)?([0-9]*\.){3}[0-9]*' | grep -Eo '([0-9]*\.){3}[0-9]*' | grep -v '127.0.0.1' | tail -n1
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34
navi
34
navi
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@ -5,17 +5,37 @@ export SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
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source "${SCRIPT_DIR}/src/main.sh"
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##? Command cheatsheet tool
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##? An interactive cheatsheet tool for the command-line
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##?
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##? Usage:
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##? cheats [options]
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##? cheats [command] [<args>...] [options]
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##?
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##? Commands:
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##? search <cmd> Search for cheatsheets on online repositories
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##? query <cmd> Pre-filter results
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##?
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##? Options:
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##? --print Prevent script execution [default: false]
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##? --no-interpolation Prevent argument interpolation [default: false]
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##? --no-preview Hide command preview window [default: false]
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##? --print Prevent script execution
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##? --path List of paths to look for cheats
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##? --no-interpolation Prevent argument interpolation
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##? --no-preview Hide command preview window
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##?
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##? Examples:
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##? cheats
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##? cheats --path '/some/folder:/another/folder'
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##? cheats search awk
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##? cheats search docker --print
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##? cheats query git
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##?
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##? More info:
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##? search
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##? Queries cheatsheets from http://cheat.sh
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##? Please note that these cheatsheets may not work out of the box
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##? Always check the preview window before executing commands!
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##? full docs
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##? Please refer to the README at https://github.com/denisidoro/navi
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VERSION="0.7.0"
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docs::eval "$@"
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VERSION="0.8.0"
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opts::eval "$@"
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main "$@"
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@ -1,7 +1,9 @@
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#!/usr/bin/env bash
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cheat::find() {
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find "${NAVI_DIR:-"${SCRIPT_DIR}/cheats"}" -iname '*.cheat'
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for path in $(echo "$NAVI_PATH" | tr ':' '\n'); do
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find "$path" -iname '*.cheat'
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done
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}
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cheat::read_many() {
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33
src/docs.sh
33
src/docs.sh
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@ -1,33 +0,0 @@
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#!/usr/bin/env bash
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set -euo pipefail
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docs::extract_help() {
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local readonly file="$1"
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grep "^##?" "$file" | cut -c 5-
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}
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docs::eval() {
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local wait_for=""
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entry_point="main"
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print=false
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interpolation=true
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preview=true
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for arg in $@; do
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case $wait_for in
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dir) NAVI_DIR="$arg"; wait_for="" ;;
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command-for) query="$(echo "$arg" | tr "^" " ")"; entry_point="preview"; break ;;
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esac
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case $arg in
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--print) print=true ;;
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--no-interpolation) interpolation=false ;;
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--version) echo "${VERSION:-unknown}" && exit 0 ;;
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--help) docs::extract_help "$0" && exit 0 ;;
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--command-for) wait_for="command-for" ;;
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--no-preview) preview=false ;;
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-d|--dir) wait_for="dir" ;;
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esac
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done
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}
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20
src/main.sh
20
src/main.sh
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@ -2,9 +2,10 @@
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source "${SCRIPT_DIR}/src/arg.sh"
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source "${SCRIPT_DIR}/src/cheat.sh"
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source "${SCRIPT_DIR}/src/docs.sh"
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source "${SCRIPT_DIR}/src/healthcheck.sh"
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source "${SCRIPT_DIR}/src/health.sh"
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source "${SCRIPT_DIR}/src/misc.sh"
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source "${SCRIPT_DIR}/src/opts.sh"
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source "${SCRIPT_DIR}/src/search.sh"
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source "${SCRIPT_DIR}/src/selection.sh"
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source "${SCRIPT_DIR}/src/str.sh"
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source "${SCRIPT_DIR}/src/ui.sh"
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@ -51,7 +52,18 @@ handler::preview() {
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main() {
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case ${entry_point:-} in
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preview) handler::preview "$@" 2>/dev/null || echo "Unable to find command for '${query:-}'" ;;
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*) health::fzf && handler::main "$@" ;;
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preview)
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handler::preview "$@" \
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|| echo "Unable to find command for '${query:-}'"
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;;
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search)
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health::fzf
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search::save "$query" || true
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handler::main "$@"
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;;
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*)
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health::fzf
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handler::main "$@"
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;;
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esac
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}
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44
src/opts.sh
Normal file
44
src/opts.sh
Normal file
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@ -0,0 +1,44 @@
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#!/usr/bin/env bash
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set -euo pipefail
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opts::extract_help() {
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local readonly file="$1"
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grep "^##?" "$file" | cut -c 5-
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}
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opts::eval() {
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local readonly wait_for=""
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entry_point="main"
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print=false
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interpolation=true
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preview=true
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for arg in "$@"; do
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case $wait_for in
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path) NAVI_PATH="$arg"; wait_for="" ;;
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preview) query="$(echo "$arg" | tr "^" " ")"; wait_for=""; break ;;
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search) query="$arg"; wait_for=""; export NAVI_PATH="${NAVI_PATH}:$(search::full_path "$query")"; ;;
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query) query="$arg"; wait_for="" ;;
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esac
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case $arg in
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--print) print=true ;;
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--no-interpolation) interpolation=false ;;
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--version) echo "${VERSION:-unknown}" && exit 0 ;;
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help|--help) opts::extract_help "$0" && exit 0 ;;
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--command-for) wait_for="command-for" ;;
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--no-preview) preview=false ;;
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--path) wait_for="path" ;;
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search) entry_point="search"; wait_for="search";;
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preview) entry_point="preview"; wait_for="preview";;
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q|query) wait_for="query";;
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esac
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done
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}
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opts::fallback_path() {
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echo "${NAVI_DIR:-${SCRIPT_DIR}/cheats}"
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}
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export NAVI_PATH="${NAVI_PATH:-$(opts::fallback_path)}"
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39
src/search.sh
Normal file
39
src/search.sh
Normal file
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@ -0,0 +1,39 @@
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#!/usr/bin/env bash
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search::cheat() {
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local readonly cmd="$(echo "$1" | str::first_word)"
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echo "% ${cmd}, cheatsh"
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echo
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curl -s "${CHTSH_URL:-http://cht.sh}/${cmd}?T"
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}
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search::filename() {
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local readonly cmd="$(echo "$1" | str::first_word)"
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echo "${cmd}_cheatsh" \
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| head -n1 \
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| awk '{print $NF}' \
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| xargs \
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| tr ' ' '_'
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}
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search::full_path() {
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local readonly cmd="$(echo "$1" | str::first_word)"
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echo "/tmp/navi/$(search::filename "$cmd").cheat"
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}
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search::save() {
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local readonly cmd="$(echo "$1" | str::first_word)"
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local readonly filepath="$(search::full_path "$cmd")"
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local readonly filedir="$(dirname "$filepath")"
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if [ -f "$filepath" ]; then
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return
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fi
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mkdir -p "$filedir" &> /dev/null || true
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search::cheat "$cmd" > "$filepath"
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}
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@ -25,3 +25,7 @@ str::last_paragraph_line() {
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awk '(!NF) { exit } { print $0 }' \
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| tail -n1
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}
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str::first_word() {
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awk '{print $1}'
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}
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@ -7,7 +7,7 @@ ui::pick() {
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ui::select() {
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local readonly cheats="$1"
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local readonly script_path="$(which navi | head -n1 || echo "${SCRIPT_DIR}/navi")"
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local readonly preview_cmd="echo {} | tr ' ' '^' | xargs -I% \"${script_path}\" --command-for %"
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local readonly preview_cmd="echo \"{}\" | tr ' ' '^' | xargs -I% \"${script_path}\" preview %"
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local args=()
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args+=("-i")
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@ -16,6 +16,13 @@ ui::select() {
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args+=("--preview"); args+=("$preview_cmd")
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args+=("--preview-window"); args+=("up:1")
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fi
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if [ -n "${query:-}" ]; then
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args+=("--query=${query} ")
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fi
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if [ "${entry_point:-}" = "search" ]; then
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args+=("--header")
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args+=("Displaying online results. Please refer to 'navi --help' for details")
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fi
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echo "$cheats" \
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| cheat::read_many \
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