# jnv
[](https://github.com/ynqa/jnv/actions/workflows/ci.yml)
*jnv* is designed for navigating JSON,
offering an interactive JSON viewer and `jq` filter editor.
Inspired by [jid](https://github.com/simeji/jid)
and [jiq](https://github.com/fiatjaf/jiq).
## Features
- Interactive JSON viewer and `jq` filter editor
- Syntax highlighting for JSON
- Use [jaq](https://github.com/01mf02/jaq) to apply `jq` filter
- This eliminates the need for users to prepare `jq` on their own.
> [!IMPORTANT]
> Starting from v0.3.0, the transition from libjq Rust binding
> [j9](https://github.com/ynqa/j9) to jq clone
> [jaq](https://github.com/01mf02/jaq) was made.
>
> This change eliminated the need to manage C-related dependencies
> that include external tools like autoconf, thus simplifying the build process.
> However, please note that some filters are not yet supported by jaq.
> For more details, refer to GitHub issue
> [#24](https://github.com/ynqa/jnv/issues/24).
>
> Please continue to provide feedback regarding this transition.
- Capable of accommodating various format
- Input: File, Stdin
- Data: A JSON or multiple JSON structures
that can be deserialized with
[StreamDeserializer](https://docs.rs/serde_json/latest/serde_json/struct.StreamDeserializer.html),
such as [JSON Lines](https://jsonlines.org/)
- Auto-completion for the filter
- Only supports:
- [Identity](https://jqlang.github.io/jq/manual/#identity)
- [Object Identifier-Index](https://jqlang.github.io/jq/manual/#object-identifier-index)
- [Array Index](https://jqlang.github.io/jq/manual/#array-index)
- Hint message to evaluate the filter
## Installation
### Homebrew
See [here](https://formulae.brew.sh/formula/jnv) for more info.
```bash
brew install jnv
```
Or install via Homebrew Tap:
```bash
brew install ynqa/tap/jnv
```
### MacPorts
See [here](https://ports.macports.org/port/jnv/) for more info.
```bash
sudo port install jnv
```
### Nix / NixOS
See [package entry on search.nixos.org](https://search.nixos.org/packages?channel=unstable&query=jnv) for more info.
```bash
nix-shell -p jnv
```
### Cargo
```bash
cargo install jnv
```
## Examples
```bash
Or
```bash
jnv data.json
```
## Keymap
| <kbd>Ctrl + C</kbd> | Exit `jnv`
| <kbd>Tab</kbd> | jq filter auto-completion
| <kbd>←</kbd> | Move the cursor one character to the left
| <kbd>→</kbd> | Move the cursor one character to the right
| <kbd>Ctrl + A</kbd> | Move the cursor to the start of the filter
| <kbd>Ctrl + E</kbd> | Move the cursor to the end of the filter
| <kbd>Backspace</kbd> | Delete a character of filter at the cursor position
| <kbd>Ctrl + U</kbd> | Delete all characters of filter
| <kbd>↑</kbd>, <kbd>Ctrl + K</kbd> | Move the cursor one entry up in JSON viewer
| <kbd>↓</kbd>, <kbd>Ctrl + J</kbd> | Move the cursor one entry down in JSON viewer
| <kbd>Ctrl + H</kbd> | Move to the last entry in JSON viewer
| <kbd>Ctrl + L</kbd> | Move to the first entry in JSON viewer
| <kbd>Enter</kbd> | Toggle expand/collapse in JSON viewer
| <kbd>Ctrl + P</kbd> | Expand all folds in JSON viewer
| <kbd>Ctrl + N</kbd> | Collapse all folds in JSON viewer
| <kbd>Alt + B</kbd> | Move the cursor to the previous nearest character within set(`.`,`\|`,`(`,`)`,`[`,`]`)
| <kbd>Alt + F</kbd> | Move the cursor to the next nearest character within set(`.`,`\|`,`(`,`)`,`[`,`]`)
| <kbd>Ctrl + W</kbd> | Erase to the previous nearest character within set(`.`,`\|`,`(`,`)`,`[`,`]`)
| <kbd>Alt + D</kbd> | Erase to the next nearest character within set(`.`,`\|`,`(`,`)`,`[`,`]`)
## Usage
```bash
JSON navigator and interactive filter leveraging jq
Usage: jnv [OPTIONS] [INPUT]
Examples:
- Read from a file:
jnv data.json
- Read from standard input:
cat data.json | jnv
Arguments:
[INPUT] Optional path to a JSON file. If not provided or if "-" is specified, reads from standard input
Options:
-e, --edit-mode <EDIT_MODE>
Edit mode for the interface ('insert' or 'overwrite'). [default: insert]
-i, --indent <INDENT>
Number of spaces used for indentation in the visualized data. [default: 2]
-n, --no-hint
Disables the display of hints.
-d, --expand-depth <JSON_EXPAND_DEPTH>
Initial depth to which JSON nodes are expanded in the visualization. [default: 3]
-s, --limit-length <JSON_LIMIT_LENGTH>
Limit length of JSON array in the visualization. [default: 50]
-l, --suggestion-list-length <SUGGESTION_LIST_LENGTH>
Number of suggestions visible in the list. [default: 3]
-h, --help
Print help (see more with '--help')
-V, --version
Print version
```
## Stargazers over time
[](https://starchart.cc/ynqa/jnv)