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84 lines
2.8 KiB
Markdown
84 lines
2.8 KiB
Markdown
# bat-extras: batpipe
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A `less` (and `bat`) preprocessor for viewing more types of files in the terminal.
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## Usage
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Like [lesspipe](https://github.com/wofr06/lesspipe), `batpipe` is designed to work with programs that support preprocessing with the `LESSOPEN` environment variable. Setting up `batpipe` will depend on your shell:
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**Bash:**
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eval "$(batpipe)"
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**Fish:**
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eval (batpipe)
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## Environment
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| Variable | Description |
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| -------------------- | ------------------------------------------------------------ |
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| `BATPIPE_TERM_WIDTH` | Sets the terminal width provided to `bat`. If this variable starts with a hyphen (`-`), the number provided will be relative to the detected terminal size. |
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## Built-in Viewers
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| Files | Program |
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| -------------------- | --------------------------- |
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| Directories | `eza`, `ls` |
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| `*.tar`, `*.tar.gz` | `tar` |
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| `*.zip`, `*.jar` | `unzip` |
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| `*.gz` | `gunzip` |
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| `*.xz` | `xz` |
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## External Viewers
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For file formats that aren't supported by default, an external file viewer can be added to `batpipe` through the external viewer API.
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External viewers are be added to batpipe by creating bash scripts inside the `~/.config/batpipe/viewers.d/` directory.
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### Creating Viewers
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Viewers must define two functions and append the viewer's name to the `$BATPIPE_VIEWERS` array.
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- `viewer_${viewer}_supports [file_basename] [file_path] [inner_file_path]`
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- `viewer_${viewer}_process [file_path] [inner_file_path]`
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The `viewer_${viewer}_supports` function is called to determine if the external viewer is capable of viewing the provided file. If this function returns successfully, the corresponding `process` function will be called.
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### API
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$BATPIPE_VIEWERS -- An array of loaded file viewers.
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$BATPIPE_ENABLE_COLOR -- Whether color is supported. (`true`|`false`)
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$BATPIPE_INSIDE_LESS -- Whether batpipe is inside less. (`true`|`false`)
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batpipe_header [pattern] [...] -- Print a viewer header line.
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batpipe_subheader [pattern] [...] -- Print a viewer subheader line.
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strip_trailing_slashes [path] -- Strips trailing slashes from a path.
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## Caveats
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- By default, `batpipe` will not use colors when previewed inside `less`.
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Colors must be explicitly enabled with `BATPIPE=color`.
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## Installation
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This script is a part of the `bat-extras` suite of scripts. You can find install instructions [here](../README.md#installation).
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## Issues?
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If you find an issue or have a feature suggestion, make a pull request or issue through GitHub!
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Contributions are always welcome.
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