cd by golang

Change Current working Directory Fast 🚀, Intelligently 🐬.

And Ergonomically 🦄 in the Aspect of Human Searching Preferences.

cd 命令 golang 进阶版 cdi。符合人体工程学搜索习惯的 cd 命令

Use cd

$ cd mb
cd: no such file or directory: mb

😡

Use cdi

$ cdi mb
/Users/legend80s/workspace/mini-balance
➜  mini-balance git:(master) ✗

😋

• 🍬 Features
• Download
• Usage
• More interesting usage 🤠
• Development
• Testing
• Build
• Publish
• Version History
• What does the install.sh do

🍬 Features

✔️ 🐬 Intelligent and ergonomical matching. Designed with an emphasis on ergonomics. Your search comfort and speed is a priority.

✔️ 🚀 Speed! Powered by Golang.

✔️ 🚀 Speed! Histories will be stored in a db file (~/cdi-db-shortcuts.json) for search speed.

✔️ 🚀 Speed! node_modules and other black hole directories wont be searched.

Download

To install cdi, you should run the install script:

cd ~ && git clone --depth 1 https://github.com/legend80s/cdi-go.git && sh ~/cdi-go/scripts/install.sh ~/cdi-go/cdi-v5 && source ~/.zshrc

To update, you should run the update script:

cd ~ && rm -rf ~/cdi-go && git clone --depth 1 https://github.com/legend80s/cdi-go.git && sh ~/cdi-go/scripts/install.sh ~/cdi-go/cdi-v5 update

To uninstall just remove cdi and codi functions in ~/.zshrc.

If the download takes too long or you are very security concerned, jump to FAQ Install mannually.

Usage

Suppose we have these directories in ~/workspace/

cli-aid
commit-msg-linter
gallery-server
js2schema

Just use cdi instead of the builtin cd command

$ cdi ca

will cd into ~/workspace/cli-aid

Ergonomically

Ergonomics or human engineering, science dealing with the application of information on physical and psychological characteristics to the design of devices and systems for human use.

Weight or priority from highest to lowest:

1. Full match basename: cdi js2schema equal to cd ~/workspace/js2schema
2. Prefix match: cdi cli equal to cd ~/workspace/cli-aid
3. Abbr match: cdi ca equal to cd ~/workspace/cli-aid
4. Contains word match: cdi msg equal to cd ~/workspace/commit-msg-linter

Suppose we have these directories in ~/workspace/:

dir-lab
├── amuser-low-info
├── long
│   ├── ali
│   ├── ali-test
│   ├── alitest
│   ├── hello-ali-test
│   └── hello-alitest
└── long-long-long-long-long
    └── ali

cdi ali will match:

dir-lab
├── amuser-low-info ✅
├── long
│   ├── ali ✅
│   ├── ali-test ✅
│   ├── alitest ✅
│   ├── hello-ali-test ✅
│   └── hello-alitest ❌
└── long-long-long-long-long
    └── ali ✅

After sorted by priority then by length:

Full match

✅ dir-lab/long/ali

✅ dir-lab/long-long-long-long-long/ali

Prefix

✅ dir-lab/long/alitest

✅ dir-lab/long/ali-test

Abbr

✅ dir-lab/amuser-low-info

Contains word

✅ dir-lab/long/hello-ali-test

So the best match is dir-lab/long/ali.

Advanced Usage

1. Set search dir

The default search dir is ~/workspace, change it to work:

cdi set-root ~/work

2. List saved shortcuts

cdi stat

Outputs file content in ~/cdi-db-shortcuts.json

3. Clear saved shortcuts

cdi clear

4. Force search the dir tree instead of from cache

--walk

Example:

cdi --walk balance

More interesting usage 🤠

Make your VSCode code command much more intelligent and convenient!

What is code command? Read Launching VSCode from the command line.

You can

codi dir-you-want-to-open-in-vscode

instead of executing 2 commands

cd ~/the/long/long/and/hard-to-memorize-dir-that-you-want-to-open-in-vscode

code .

Put this in your ~/.zshrc:

# Intelligent `code` command `codi`
codi() {
  target=$($cdipath "$@")

  echo $target

  if [[ $target == *"no such dirname"* ]]; then
    # DO NOTHING WHEN NO DIRECTORY FOUND
  else
    code $(cdi-echo $1)
  fi
}

Development

go run main.go -walk {directory-to-cd}

Testing

go test ./utils

Build

go build -v -o cdi

Publish

git tag v1.x.x && gp && gp --tags

Version History

V1 ☞

Match against without priority

• full match
• abbr
• abbr contains
• basename letter contains

Then pick the shortest one.

V2

Priority or weight should be taken into account.

Match priority

1. full match
2. abbr
3. abbr contains
4. basename letter contains

Then pick the one with highest priority if priority equals then pick the shortest one.

V3

Match priority

1. full match
2. prefix
3. abbr
4. basename word contains

Then pick the one with highest priority if priority equals then pick the shortest one.

V4 ☞

Directory nested level should be taken into account.

Match priority

1. full match
2. prefix
3. abbr
4. basename word contains

Then conditionally sort by length or directory nested level.

1. If the directories take the same priority , we pick the shortest one.
2. Otherwise we pick the directory with least nested level, instead of the the one with higher priority but has more nested level greater than 1.

Directory nested level sorting

We choose the directory with least nested level when the counterparts's level is too deep. "too deep" means level diff > 1

For example:

/Users/name/workspace/6/paytm/mr # (priority 0, directory nested level 6)
/Users/3/MiniRecharge # (priority 2, directory nested level 3)

When we cdi mr, though the first path paytm/mr is matched mr by "full match" with highest priority but its nested level is too deep (6).

But the second path /Users/3/MiniRecharge matched by "abbr" though with much lower priority but has lower nested level 3.

6 - 3 = 3 > 1. So cdi mr will cd into the second path /Users/3/MiniRecharge.

In V2 or V3 it will cd into /Users/name/workspace/6/paytm/mr because V3 always pick the one with highest priority.

In V1 it will cd into /Users/3/MiniRecharge because V1 always pick the shortest path.

V5 ☞

返璞归真，简单即美

Match against without priority

• full match
• prefix
• abbr
• basename word contains

Then pick the least nested level directory.

FAQ

Install manually

1. Download the cdi cmd https://raw.githubusercontent.com/legend80s/cdi-go/master/cdi-v5.

2. Make it executable:

   chmod +x ~/path/to/downloaded/cdi && xattr -c ~/path/to/downloaded/cdi

3. Copy the script in what-does-the-installsh-do to your ~/.zshrc.

4. Make it alive:

   source ~/.zshrc
   

5. Give it a try:

   cdi whatever-directory-you-want-to-jump-into
   codi whatever-directory-you-want-to-open-in-vscode

What does the install.sh do

It will add the shell functions to your .zshrc because you cannot change shell directory in golang process.

## --- cdi begin ---
cdipath="~/path/to/downloaded/cdi"

cdi() {
  target=$($cdipath -fallback "$@")

  echo $target
  cd $target
}

# Show debug info
cdi-echo() {
  target=$($cdipath "$@")

  echo target
}

# Intelligent `code` command `codi`
codi() {
  target=$($cdipath "$@")

  echo $target

  if [[ $target == *"no such dirname"* ]]; then
    # DO NOTHING WHEN NO DIRECTORY FOUND
  else
    code $(cdi-echo $1)
  fi
}

# Show cache
alias cdi-stat="$cdipath stat"
# Clear cache
alias cdi-stat-clear="$cdipath stat --clear && echo -n 'Clear cache success. ' && cdi-stat"
## --- cdi end ---

TODO

• Faster directory search, use concurrent search logic like fd

References

Git Shallow Clone and Clone Depth