mirror of https://github.com/aristocratos/bashtop
feat: Add Bash TUI Data Viewer
Implements a Text-based User Interface (TUI) script in Bash to display CSV, TSV, and JSON data. Features: - Parses and displays CSV, TSV (tab-delimited), and common JSON (array of objects, single object) structures. - Configurable refresh interval via command-line argument. - Handles basic errors such as file not found, unknown file type, and missing 'jq' dependency for JSON. - Simple TUI with a box drawn around the data. - Basic input: 'q' to quit, 'r' to re-parse and refresh data. - Includes a README.md with usage instructions and details. The TUI is styled after tools like bashtop, using ANSI escape codes for screen manipulation and display.pull/245/head
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# 
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# Bash Data Viewer
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[](https://travis-ci.com/aristocratos/bashtop)
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[](https://paypal.me/aristocratos)
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[](https://github.com/sponsors/aristocratos)
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[](https://ko-fi.com/aristocratos)
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### C++ Version
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##### 18 September 2021
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The C++ version of bashtop - btop++ is available.
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Get it at https://github.com/aristocratos/btop
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#
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## Index
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* [Documents](#documents)
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* [Description](#description)
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* [Features](#features)
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* [Themes](#themes)
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* [Support and funding](#support-and-funding)
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* [Prerequisites](#prerequisites)
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* [Dependencies](#dependencies)
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* [Screenshots](#screenshots)
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* [Installation](#installation)
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* [Configurability](#configurability)
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* [TODO](#todo)
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* [License](#license)
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## Documents
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#### [CHANGELOG.md](CHANGELOG.md)
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#### [CONTRIBUTING.md](CONTRIBUTING.md)
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#### [CODE_OF_CONDUCT.md](CODE_OF_CONDUCT.md)
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## Description
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Resource monitor that shows usage and stats for processor, memory, disks, network and processes.
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A TUI (Text-based User Interface) tool, written purely in Bash, for displaying CSV, TSV, or JSON data. The display refreshes at a configurable interval, inspired by tools like bashtop.
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## Features
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* Easy to use, with a game inspired menu system.
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* Fast and "mostly" responsive UI with UP, DOWN keys process selection.
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* Function for showing detailed stats for selected process.
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* Ability to filter processes.
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* Easy switching between sorting options.
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* Send SIGTERM, SIGKILL, SIGINT to selected process.
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* UI menu for changing all config file options.
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* Auto scaling graph for network usage.
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* Shows message in menu if new version is available
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* Shows current read and write speeds for disks
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* Multiple data collection methods which can be switched if running on Linux
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## Themes
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Bashtop now has theme support and a function to download missing local themes from repository.
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See [themes](themes) folder for available themes.
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The builtin theme downloader places the default themes in `$HOME/.config/bashtop/themes`.
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User created themes should be placed in `$HOME/.config/bashtop/user_themes` to be safe from overwrites.
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Let me know if you want to contribute with new themes.
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## Support and funding
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Bug fixes and updates might be slow during normal workdays since I work full time as an industrial worker and don't have much time or energy left during the week.
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I'm looking into ways of funding this project that would allow me to take off time from my day job to work on this.
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Any advice on how to get funding for open source projects is very welcome!
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#### Update
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You can now sponsor this project through github, see [my sponsors page](https://github.com/sponsors/aristocratos) for options.
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Also added donation links for [paypal](https://paypal.me/aristocratos) and [ko-fi](https://ko-fi.com/aristocratos).
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Any support is greatly appreciated!
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## Prerequisites
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#### Mac Os X
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Will not display correctly in the standard terminal!
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Recommended alternative [iTerm2](https://www.iterm2.com/)
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Will also need to be run as superuser to display stats for processes not owned by user.
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#### Linux, Mac Os X and FreeBSD
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For correct display, a terminal with support for:
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* 24-bit truecolor ([See list of terminals with truecolor support](https://gist.github.com/XVilka/8346728))
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* Wide characters (Are sometimes problematic in web-based terminals)
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Also needs a UTF8 locale and a font that covers:
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* Unicode Block “Braille Patterns” U+2800 - U+28FF
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* Unicode Block “Geometric Shapes” U+25A0 - U+25FF
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* Unicode Block "Box Drawing" and "Block Elements" U+2500 - U+259F
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#### Notice
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Dropbear seems to not be able to set correct locale. So if accessing bashtop over ssh, OpenSSH is recommended.
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* Displays CSV, TSV, and JSON data in a tabular format.
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* Configurable refresh interval for the data display.
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* Basic TUI for easy viewing in the terminal.
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* Error handling for file issues and unsupported formats.
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## Dependencies
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## Linux, OSX and FreeBSD
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* **Bash**: Version 4.4 or later.
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* **jq**: Required for parsing JSON files. You can usually install it via your system's package manager (e.g., `sudo apt install jq`, `sudo yum install jq`, `brew install jq`).
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**[bash](https://www.gnu.org/software/bash/)** (v4.4 or later) Script functionality will most probably break with earlier versions.
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Bash version 5 is highly recommended to make use of $EPOCHREALTIME variable instead of a lot of external date command calls.
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## Usage
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**[GNU coreutils](https://www.gnu.org/software/coreutils/)**
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To use the Bash Data Viewer, run the script from your terminal:
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**[GNU sed](https://www.gnu.org/software/sed/)**
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## Linux using /proc for data collection
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**[GNU grep](https://www.gnu.org/software/grep/)**
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**[ps from procps-ng](https://gitlab.com/procps-ng/procps)** (v3.1.15 or later)
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**[GNU awk](https://www.gnu.org/software/gawk/)**
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## OSX and FreeBSD or Linux using psutil for data collection
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**[Python3](https://www.python.org/downloads/)** (v3.6 or later)
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**[psutil python module](https://github.com/giampaolo/psutil)** (v5.7.0 or later)
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## Optionals for additional stats
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(Optional OSX) **[osx-cpu-temp](https://github.com/lavoiesl/osx-cpu-temp)** Needed to show CPU temperatures.
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(Optional Linux) **[lm-sensors](https://github.com/lm-sensors/lm-sensors)** Needed to show CPU temperatures.
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(Optional Linux) **[iostat (part of sysstat)](https://github.com/sysstat/sysstat)** Needed if you want disk read/write stats and are not using psutil data collection.
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(Optional OSX/Linux/FreeBSD) **[curl](https://curl.haxx.se/download.html)** (v7.16.2 or later) Needed if you want messages about updates and the ability to download themes.
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## Screenshots
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Main UI showing details for a selected process.
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Main menu.
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Options menu.
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## Installation
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#### Dependencies installation OSX
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>Install homebrew if not already installed
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``` bash
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/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"
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```shell
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./dataviewer.sh [path_to_data_file] [refresh_interval_seconds]
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```
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>If you got python 3.6 or later installed outside of brew:
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``` bash
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sudo python3 -m ensurepip
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sudo python3 -m pip install psutil
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```
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>If you haven't got python3 installed:
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```
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brew install python3
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python3 -m pip install psutil
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```
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>Install dependencies
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``` bash
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brew install bash coreutils gnu-sed git
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```
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>Install optional dependency osx-cpu-temp
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``` bash
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brew install osx-cpu-temp
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```
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#### Dependencies installation FreeBSD
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>Install with pkg and pip
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``` bash
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sudo pkg install coreutils gsed git py37-psutil
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```
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#### Manual installation Linux, OSX and FreeBSD
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>Clone and install
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``` bash
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git clone https://github.com/aristocratos/bashtop.git
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cd bashtop
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sudo make install
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```
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>to uninstall it
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``` bash
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sudo make uninstall
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```
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#### FreeBSD package
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Available in [FreeBSD ports](https://www.freshports.org/sysutils/bashtop/)
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Install pre-built pacakge
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``` bash
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sudo pkg install bashtop
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```
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#### Arch based
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Available in the AUR as [bashtop-git](https://aur.archlinux.org/packages/bashtop-git/)
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Available in the Arch Linux repository as [bashtop](https://www.archlinux.org/packages/community/any/bashtop/)
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#### Debian based
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Available in [official Debian repository](https://tracker.debian.org/pkg/bashtop) since Debian 11
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Available for debian/ubuntu from [Azlux's repository](http://packages.azlux.fr/)
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Or use quick installation:
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>Quick install go to DEB folder and type
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``` bash
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sudo ./build
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```
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>to uninstall it go to DEB folder and type
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``` bash
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sudo ./build --remove
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```
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#### Guix based
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Available in [official Guix repository](https://git.savannah.gnu.org/cgit/guix.git/tree/gnu/packages/admin.scm) since 6bbd0fd2
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>Installation
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``` bash
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guix install bashtop
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```
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#### Ubuntu based
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Available in [official Ubuntu repository](https://launchpad.net/ubuntu/+source/bashtop) since Ubuntu 20.10
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Available for Ubuntu from [PPA repository](https://code.launchpad.net/~bashtop-monitor/+archive/ubuntu/bashtop)
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>Add PPA repository and install bashtop
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``` bash
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sudo add-apt-repository ppa:bashtop-monitor/bashtop
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sudo apt update
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sudo apt install bashtop
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```
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#### Fedora
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Available in the Fedora repository.
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>Installation
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``` bash
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sudo dnf install bashtop
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```
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#### CentOS 8
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>Installation
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``` bash
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dnf config-manager --set-enabled PowerTools
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dnf install epel-release
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dnf install bashtop
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```
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#### RHEL 8
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>Installation
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``` bash
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ARCH=$( /bin/arch )
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subscription-manager repos --enable
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"codeready-builder-for-rhel-8-${ARCH}-rpms"
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dnf install epel-release
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dnf install bashtop
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```
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## Configurability
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All options changeable from within UI.
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Config files stored in "$HOME/.config/bashtop" folder
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#### bashtop.cfg: (auto generated if not found)
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```bash
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#? Config file for bashtop v. 0.9.21
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#* Color theme, looks for a .theme file in "$HOME/.config/bashtop/themes" and "$HOME/.config/bashtop/user_themes"
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#* Should be prefixed with either "themes/" or "user_themes/" depending on location, "Default" for builtin default theme
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color_theme="Default"
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#* Update time in milliseconds, increases automatically if set below internal loops processing time, recommended 2000 ms or above for better sample times for graphs
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update_ms="2500"
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#* Processes sorting, "pid" "program" "arguments" "threads" "user" "memory" "cpu lazy" "cpu responsive"
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#* "cpu lazy" updates sorting over time, "cpu responsive" updates sorting directly
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proc_sorting="cpu lazy"
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#* Reverse sorting order, "true" or "false"
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proc_reversed="false"
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#* Show processes as a tree
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proc_tree="false"
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#* Check cpu temperature, only works if "sensors", "vcgencmd" or "osx-cpu-temp" commands is available
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check_temp="true"
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#* Draw a clock at top of screen, formatting according to strftime, empty string to disable
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draw_clock="%X"
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#* Update main ui when menus are showing, set this to false if the menus is flickering too much for comfort
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background_update="true"
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#* Custom cpu model name, empty string to disable
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custom_cpu_name=""
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#* Enable error logging to "$HOME/.config/bashtop/error.log", "true" or "false"
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error_logging="true"
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#* Show color gradient in process list, "true" or "false"
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proc_gradient="true"
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#* If process cpu usage should be of the core it's running on or usage of the total available cpu power
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proc_per_core="false"
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#* Optional filter for shown disks, should be names of mountpoints, "root" replaces "/", separate multiple values with space
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disks_filter=""
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#* Enable check for new version from github.com/aristocratos/bashtop at start
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update_check="true"
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#* Enable graphs with double the horizontal resolution, increases cpu usage
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hires_graphs="false"
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#* Enable the use of psutil python3 module for data collection, default on OSX
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use_psutil="true"
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```
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#### Command line options: (not yet implemented)
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``` bash
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USAGE: bashtop
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```
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## TODO
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Might finish off items out of order since I usually work on multiple at a time.
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- [x] Add options to change colors for text, graphs and meters.
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- [x] Fix cross platform compatibility for Mac OSX and *BSD: Working on OSX, and FreeBSD.
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- [x] Add support for showing AMD cpu temperatures.
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- [x] Add option to show tree view of processes.
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- [x] Add option to reset network download/upload totals.
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- [x] Add option to turn of gradient in processes list.
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- [ ] Add gpu temp and usage. (If feasible)
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- [x] Add io stats for disks.
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- [ ] Add cpu and mem stats for docker containers. (If feasible)
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- [x] Change process list to line scroll instead of page change.
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- [ ] Add optional window for tailing log files.
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- [ ] Add options for resizing all boxes.
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- [ ] Add command line argument parsing.
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- [ ] Builtin updater. Relevant PR #96 by Jukoo
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- [ ] Add support for zram in memory box. Relevant PR #122 by perkinslr
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- [ ] Miscellaneous optimizations and code cleanup.
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- [ ] Add more commenting where it's sparse.
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- [ ] Python port. (Porting started)
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## LICENSE
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[Apache License 2.0](LICENSE)
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**Arguments:**
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* `path_to_data_file` (optional): The path to the CSV, TSV, or JSON file you want to display.
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* If not provided, the TUI will launch and show "No input file specified."
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* `refresh_interval_seconds` (optional): The time in seconds between display refreshes.
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* Defaults to 5 seconds if not provided.
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* Must be a positive integer.
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**Examples:**
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* Display a CSV file with a 2-second refresh interval:
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```shell
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./dataviewer.sh data.csv 2
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```
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* Display a JSON file with the default 5-second refresh interval:
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```shell
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./dataviewer.sh logs.json
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```
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* Launch the TUI without an initial file (it will show an appropriate message):
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```shell
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./dataviewer.sh
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```
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## Supported Data Formats
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### CSV (Comma-Separated Values)
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* File extension must be `.csv`.
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* The first line is treated as the header row.
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* Uses comma (`,`) as the delimiter.
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### TSV (Tab-Separated Values)
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* File extension must be `.tsv`.
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* The first line is treated as the header row.
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* Uses tab (`\t`) as the delimiter.
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### JSON (JavaScript Object Notation)
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* File extension must be `.json`.
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* Requires `jq` to be installed.
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* **Supported Structures:**
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1. **Array of Objects**:
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* Example: `[{"name": "Alice", "age": 30}, {"name": "Bob", "age": 24}]`
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* The keys of the first object in the array are used as headers.
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* Each object in the array is displayed as a row.
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2. **Single Object**:
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* Example: `{"hostname": "server1", "ip": "192.168.1.10", "status": "running"}`
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* The keys of the object are used as headers.
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* The object's values are displayed as a single data row.
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3. **Empty Array**:
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* Example: `[]`
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* Displays an info message: "Info: JSON file is an empty array []".
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* Other JSON structures (e.g., simple arrays of strings/numbers, nested complex objects without a clear tabular mapping) might show an "Unsupported JSON structure" error or may not display as intended.
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## Controls
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* **`q`**: Quit the application.
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* **`r`**: Manually re-parse the input file and refresh the display. This is useful if the data file has been updated.
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## Error Handling
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The TUI will display messages for common errors, such as:
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* File not found.
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* Unknown file type.
|
||||
* `jq` not installed (for JSON files).
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* Empty or invalid JSON files.
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* Unsupported JSON structures.
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## TODO / Potential Future Enhancements
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* More sophisticated column width calculation (e.g., based on content).
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* Scrolling (up/down, left/right) for larger datasets.
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* Configuration file for persistent settings.
|
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* Theming support.
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* Search/filter data within the TUI.
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|
|
|
|||
|
|
@ -0,0 +1,411 @@
|
|||
#!/usr/bin/env bash
|
||||
|
||||
# Ensure Bash 4.4 or later
|
||||
if [[ "${BASH_VERSINFO[0]}" -lt 4 ]] || [[ "${BASH_VERSINFO[0]}" == 4 && "${BASH_VERSINFO[1]}" -lt 4 ]]; then
|
||||
echo "ERROR: Bash 4.4 or later is required (you are using Bash ${BASH_VERSINFO[0]}.${BASH_VERSINFO[1]})."
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# Set script to exit on error
|
||||
set -e
|
||||
|
||||
# --- Drawing Functions ---
|
||||
# Usage: draw_box <line> <col> <height> <width> [title]
|
||||
draw_box() {
|
||||
local line="$1" col="$2" height="$3" width="$4" title="$5"
|
||||
local i
|
||||
|
||||
# Draw top border
|
||||
echo -en "\033[${line};${col}H┌"
|
||||
for ((i=0; i<width-2; i++)); do echo -n "─"; done
|
||||
echo -n "┐"
|
||||
|
||||
# Draw side borders
|
||||
for ((i=1; i<height-1; i++)); do
|
||||
echo -en "\033[$((line+i));${col}H│"
|
||||
echo -en "\033[$((line+i));$((col+width-1))H│"
|
||||
done
|
||||
|
||||
# Draw bottom border
|
||||
echo -en "\033[$((line+height-1));${col}H└"
|
||||
for ((i=0; i<width-2; i++)); do echo -n "─"; done
|
||||
echo -n "┘"
|
||||
|
||||
# Draw title
|
||||
if [[ -n "$title" ]]; then
|
||||
echo -en "\033[${line};$((col + 2))H┤ ${title} ├"
|
||||
fi
|
||||
}
|
||||
|
||||
# Usage: display_data <start_line> <start_col> <max_width> <max_height>
|
||||
display_data() {
|
||||
local start_line="$1" start_col="$2" max_width="$3" max_height="$4"
|
||||
local i row_idx col_idx
|
||||
|
||||
# Clear previous content within the data area of the box
|
||||
for ((i=0; i<max_height-2; i++)); do
|
||||
echo -en "\033[$((start_line+1+i));$((start_col+1))H"
|
||||
printf "%*s" "$((max_width-2))" ""
|
||||
done
|
||||
|
||||
# Check if header_row itself contains an error message or info
|
||||
if [[ "${header_row[0]}" == "Error:"* || "${header_row[0]}" == "Info:"* || "${header_row[0]}" == "No input file specified."* ]]; then
|
||||
echo -en "\033[$((start_line + 1));$((start_col + 1))H${header_row[0]:0:$((max_width-2))}"
|
||||
# If there's a second line to the error/info message in header_row
|
||||
if [[ -n "${header_row[1]}" ]]; then
|
||||
echo -en "\033[$((start_line + 2));$((start_col + 1))H${header_row[1]:0:$((max_width-2))}"
|
||||
fi
|
||||
return
|
||||
fi
|
||||
|
||||
# Display Header
|
||||
if ((${#header_row[@]} > 0)); then
|
||||
echo -en "\033[$((start_line + 1));$((start_col + 1))H"
|
||||
local header_line_to_print=""
|
||||
for cell in "${header_row[@]}"; do
|
||||
local col_width=$(( (max_width - 2) / ${#header_row[@]} ))
|
||||
if ((col_width < 1)); then col_width=1; fi
|
||||
local truncated_cell
|
||||
if ((${#cell} > col_width -1 )); then
|
||||
truncated_cell="${cell:0:$((col_width-2))}…"
|
||||
else
|
||||
truncated_cell="$cell"
|
||||
fi
|
||||
header_line_to_print+=$(printf "\033[1m%-*s\033[0m" "$col_width" "$truncated_cell")
|
||||
done
|
||||
echo -n "$header_line_to_print"
|
||||
row_idx=1
|
||||
else
|
||||
row_idx=0
|
||||
fi
|
||||
|
||||
# Display Data Rows
|
||||
local data_display_count=0
|
||||
for row_nameref in "${parsed_data_rows[@]}"; do
|
||||
if ((row_idx >= max_height - 2)); then break; fi
|
||||
|
||||
declare -n current_row="$row_nameref"
|
||||
|
||||
echo -en "\033[$((start_line + 1 + row_idx));$((start_col + 1))H"
|
||||
|
||||
local line_to_print=""
|
||||
col_idx=0
|
||||
if ((${#current_row[@]} > 0)); then
|
||||
for cell in "${current_row[@]}"; do
|
||||
# Use header_row for column count if available, otherwise current_row
|
||||
local num_cols_for_width=${#header_row[@]}
|
||||
if ((num_cols_for_width == 0)); then num_cols_for_width=${#current_row[@]}; fi
|
||||
if ((num_cols_for_width == 0)); then num_cols_for_width=1; fi # Avoid division by zero
|
||||
|
||||
local col_width=$(( (max_width - 2) / num_cols_for_width ))
|
||||
if ((col_width < 1)); then col_width=1; fi
|
||||
local truncated_cell
|
||||
|
||||
if ((${#cell} > col_width -1 )); then
|
||||
truncated_cell="${cell:0:$((col_width-2))}…"
|
||||
else
|
||||
truncated_cell="$cell"
|
||||
fi
|
||||
line_to_print+=$(printf "%-*s" "$col_width" "$truncated_cell")
|
||||
((col_idx++))
|
||||
done
|
||||
echo -n "$line_to_print"
|
||||
fi
|
||||
|
||||
((row_idx++))
|
||||
((data_display_count++))
|
||||
done
|
||||
|
||||
if [[ ${#header_row[@]} -eq 0 && $data_display_count -eq 0 ]]; then
|
||||
# This case should be largely covered by the initial check of header_row for errors
|
||||
# but kept as a fallback.
|
||||
local error_msg="No data to display."
|
||||
if [[ -n "$INPUT_FILE_PATH" && ! -f "$INPUT_FILE_PATH" ]]; then # Check again, in case it was deleted
|
||||
error_msg="Error: File not found ($INPUT_FILE_PATH)"
|
||||
elif [[ -n "$INPUT_FILE_PATH" ]]; then
|
||||
error_msg="Error: Could not parse or file empty ($INPUT_FILE_PATH)"
|
||||
fi
|
||||
echo -en "\033[$((start_line + 1));$((start_col + 1))H${error_msg:0:$((max_width-2))}"
|
||||
elif [[ ${#header_row[@]} -gt 0 && $data_display_count -eq 0 ]]; then
|
||||
local no_data_msg="Info: Header found, but no data rows."
|
||||
echo -en "\033[$((start_line + 2));$((start_col + 1))H${no_data_msg:0:$((max_width-2))}"
|
||||
fi
|
||||
}
|
||||
|
||||
# --- Terminal Control Functions ---
|
||||
hide_cursor() {
|
||||
echo -en "\033[?25l"
|
||||
}
|
||||
|
||||
show_cursor() {
|
||||
echo -en "\033[?25h"
|
||||
}
|
||||
|
||||
alt_screen() {
|
||||
echo -en "\033[?1049h"
|
||||
}
|
||||
|
||||
normal_screen() {
|
||||
echo -en "\033[?1049l"
|
||||
}
|
||||
|
||||
clear_screen() {
|
||||
echo -en "\033[2J"
|
||||
}
|
||||
|
||||
# --- Global Variables ---
|
||||
SCRIPT_NAME="DataViewer"
|
||||
VERSION="0.1.0"
|
||||
CONFIG_REFRESH_INTERVAL_SECONDS=5 # Default refresh interval in seconds
|
||||
INPUT_FILE_PATH=""
|
||||
declare -a header_row # Will store the header fields
|
||||
declare -a parsed_data_rows # Will store namerefs to actual data row arrays
|
||||
|
||||
# --- Data Parsing Functions ---
|
||||
# Usage: parse_csv_tsv <file_path> <delimiter>
|
||||
parse_csv_tsv() {
|
||||
local file_path="$1"
|
||||
local delimiter="$2"
|
||||
local line_num=0
|
||||
|
||||
# Reset global data arrays
|
||||
header_row=()
|
||||
parsed_data_rows=()
|
||||
|
||||
if [[ ! -f "$file_path" ]]; then
|
||||
# This message will be shown by display_data
|
||||
return 1
|
||||
fi
|
||||
|
||||
# Read the header line
|
||||
IFS="$delimiter" read -r -a header_row < <(head -n 1 "$file_path")
|
||||
|
||||
local temp_row_idx=0
|
||||
# Use process substitution and tail correctly
|
||||
# Ensure to handle files with only a header or files where data lines might not end with a newline
|
||||
while IFS="$delimiter" read -r -a line_fields || { [[ -n "${line_fields[*]}" ]] && (( ${#line_fields[@]} > 0 )); }; do
|
||||
# Skip empty lines that might be read by `read` if not careful
|
||||
[[ -z "${line_fields[*]}" ]] && continue
|
||||
|
||||
local row_var_name="data_row_${temp_row_idx}"
|
||||
# Declare the array dynamically and assign fields to it
|
||||
declare -g "$row_var_name=()"
|
||||
for field in "${line_fields[@]}"; do
|
||||
# Ensure fields containing only spaces are preserved if necessary, by quoting.
|
||||
# Using printf to escape quotes within the field itself if necessary for the declare statement.
|
||||
printf -v safe_field "%q" "$field"
|
||||
declare -g -a "$row_var_name+=($safe_field)"
|
||||
done
|
||||
|
||||
parsed_data_rows+=("$row_var_name")
|
||||
((temp_row_idx++))
|
||||
done < <(tail -n +2 "$file_path") # Start from the second line for data
|
||||
|
||||
if [[ $(wc -l < "$file_path") -eq 1 && ${#header_row[@]} -gt 0 && ${#parsed_data_rows[@]} -eq 0 ]]; then
|
||||
: # Current behavior: single line is header.
|
||||
fi
|
||||
|
||||
return 0
|
||||
}
|
||||
|
||||
# Usage: parse_json <file_path>
|
||||
parse_json() {
|
||||
local file_path="$1"
|
||||
|
||||
# Reset global data arrays
|
||||
header_row=()
|
||||
parsed_data_rows=()
|
||||
|
||||
if [[ ! -f "$file_path" ]]; then
|
||||
# This message will be displayed by display_data if header_row remains empty
|
||||
header_row=("Error: File not found ($file_path)")
|
||||
return 1
|
||||
fi
|
||||
|
||||
if ! command -v jq &> /dev/null; then
|
||||
header_row=("Error: jq is required for JSON.")
|
||||
return 1
|
||||
fi
|
||||
|
||||
# Check for completely empty file or just whitespace
|
||||
if [[ ! -s "$file_path" ]] || [[ -z "$(jq . "$file_path" 2>/dev/null)" ]]; then
|
||||
header_row=("Error: JSON file is empty or invalid.")
|
||||
return 1
|
||||
fi
|
||||
|
||||
# Check if it's an empty array specifically
|
||||
if [[ "$(jq 'if type == "array" and length == 0 then "empty_array" else "not_empty" end' -r "$file_path")" == "empty_array" ]]; then
|
||||
header_row=("Info: JSON file is an empty array [].")
|
||||
return 0 # Successfully parsed an empty array
|
||||
fi
|
||||
|
||||
# Attempt to parse JSON as an array of objects
|
||||
# Extract headers from the keys of the first object
|
||||
mapfile -t header_row < <(jq -r 'if type == "array" and length > 0 and .[0] != null and .[0] != "null" then .[0] | keys_unsorted[] else empty end' "$file_path")
|
||||
|
||||
if ((${#header_row[@]} == 0)); then
|
||||
# Attempt to parse as a simple object (key-value pairs)
|
||||
mapfile -t header_row < <(jq -r 'if type == "object" then keys_unsorted[] else empty end' "$file_path")
|
||||
if ((${#header_row[@]} > 0)); then
|
||||
local temp_row_idx=0
|
||||
local row_var_name="data_row_${temp_row_idx}"
|
||||
|
||||
# Correctly initialize the array before appending
|
||||
declare -g "$row_var_name=()"
|
||||
|
||||
for key in "${header_row[@]}"; do
|
||||
local value
|
||||
# Use printf for safer value assignment, then read into var
|
||||
value_str=$(jq -r --arg k "$key" '.[$k]' "$file_path")
|
||||
declare -g -a "$row_var_name+=($(printf %q "$value_str"))"
|
||||
done
|
||||
parsed_data_rows+=("$row_var_name")
|
||||
else
|
||||
header_row=("Error: Unsupported JSON structure or empty object.")
|
||||
return 1
|
||||
fi
|
||||
else
|
||||
# Process as an array of objects
|
||||
local temp_row_idx=0
|
||||
local num_objects
|
||||
num_objects=$(jq '. | length' "$file_path")
|
||||
|
||||
for ((i=0; i<num_objects; i++)); do
|
||||
local row_var_name="data_row_${temp_row_idx}"
|
||||
declare -g "$row_var_name=()" # Initialize row array
|
||||
for key in "${header_row[@]}"; do
|
||||
local value
|
||||
value_str=$(jq -r --arg k "$key" ".[$i] | .[\$k]" "$file_path")
|
||||
declare -g -a "$row_var_name+=($(printf %q "$value_str"))"
|
||||
done
|
||||
parsed_data_rows+=("$row_var_name")
|
||||
((temp_row_idx++))
|
||||
done
|
||||
fi
|
||||
return 0
|
||||
}
|
||||
|
||||
# --- Main Function Placeholder ---
|
||||
main() {
|
||||
alt_screen
|
||||
clear_screen
|
||||
hide_cursor
|
||||
|
||||
trap 'cleanup' EXIT SIGINT SIGTERM
|
||||
|
||||
local box_line=1 box_col=1
|
||||
# These will be dynamically set based on terminal size anyway
|
||||
# local box_height=15 box_width=60
|
||||
|
||||
# Determine file type and parse data
|
||||
if [[ -n "$INPUT_FILE_PATH" ]]; then
|
||||
local file_ext="${INPUT_FILE_PATH##*.}"
|
||||
if [[ ! -f "$INPUT_FILE_PATH" ]]; then
|
||||
# File not found at the start, set header_row to an error message
|
||||
# This allows display_data to show it.
|
||||
header_row=("Error: File not found ($INPUT_FILE_PATH)")
|
||||
parsed_data_rows=()
|
||||
elif [[ "$file_ext" == "csv" ]]; then
|
||||
parse_csv_tsv "$INPUT_FILE_PATH" ","
|
||||
elif [[ "$file_ext" == "tsv" ]]; then
|
||||
parse_csv_tsv "$INPUT_FILE_PATH" $'\t' # Tab delimiter
|
||||
elif [[ "$file_ext" == "json" ]]; then
|
||||
parse_json "$INPUT_FILE_PATH"
|
||||
else
|
||||
header_row=("Error: Unknown file type ($file_ext)")
|
||||
parsed_data_rows=()
|
||||
fi
|
||||
else
|
||||
# No input file path given
|
||||
header_row=("No input file specified.")
|
||||
parsed_data_rows=()
|
||||
fi
|
||||
|
||||
# Main loop
|
||||
while true; do
|
||||
local term_height term_width
|
||||
if ! read -r term_height term_width < <(stty size); then
|
||||
term_height=24
|
||||
term_width=80
|
||||
# echo "Failed to get terminal size, defaulting to ${term_height}x${term_width}" >&2 # Debug
|
||||
fi
|
||||
|
||||
|
||||
local current_box_height=$((term_height - 1)) # Leave 1 line for status/quit message
|
||||
local current_box_width=$((term_width))
|
||||
if ((current_box_height < 5)); then current_box_height=5; fi
|
||||
if ((current_box_width < 20)); then current_box_width=20; fi
|
||||
|
||||
clear_screen
|
||||
local current_title="${INPUT_FILE_PATH:-Data Viewer}"
|
||||
if [[ "${header_row[0]}" == "Error:"* || "${header_row[0]}" == "No input file specified." ]]; then
|
||||
current_title="${header_row[0]}" # Show error as title if parsing failed early
|
||||
elif [[ "${header_row[0]}" == "Info:"* ]]; then # Also show Info messages in title
|
||||
current_title="${header_row[0]}"
|
||||
fi
|
||||
draw_box "$box_line" "$box_col" "$current_box_height" "$current_box_width" "$current_title"
|
||||
|
||||
display_data "$box_line" "$box_col" "$current_box_width" "$current_box_height"
|
||||
|
||||
# Status/Quit message at the bottom of the terminal
|
||||
echo -en "\033[$((term_height));1H" # Move to last line, first column
|
||||
printf "%-${term_width}s" "Press 'q' to quit. (r)efresh. Interval: ${CONFIG_REFRESH_INTERVAL_SECONDS}s" # Clear line and print
|
||||
|
||||
read -rsn1 -t "${CONFIG_REFRESH_INTERVAL_SECONDS}" key
|
||||
key=${key,,} # to lower case
|
||||
if [[ "$key" == "q" ]]; then
|
||||
break
|
||||
elif [[ "$key" == "r" ]]; then
|
||||
# Re-evaluate what to parse or show on refresh
|
||||
if [[ -n "$INPUT_FILE_PATH" ]]; then
|
||||
local file_ext="${INPUT_FILE_PATH##*.}"
|
||||
if [[ ! -f "$INPUT_FILE_PATH" ]]; then
|
||||
header_row=("Error: File not found ($INPUT_FILE_PATH)")
|
||||
parsed_data_rows=()
|
||||
elif [[ "$file_ext" == "csv" ]]; then
|
||||
parse_csv_tsv "$INPUT_FILE_PATH" ","
|
||||
elif [[ "$file_ext" == "tsv" ]]; then
|
||||
parse_csv_tsv "$INPUT_FILE_PATH" $'\t'
|
||||
elif [[ "$file_ext" == "json" ]]; then
|
||||
parse_json "$INPUT_FILE_PATH"
|
||||
else
|
||||
header_row=("Error: Unknown file type ($file_ext)")
|
||||
parsed_data_rows=()
|
||||
fi
|
||||
else
|
||||
header_row=("No input file specified.")
|
||||
parsed_data_rows=()
|
||||
fi
|
||||
fi
|
||||
done
|
||||
}
|
||||
|
||||
# --- Cleanup Function ---
|
||||
cleanup() {
|
||||
show_cursor
|
||||
normal_screen
|
||||
echo "Data Viewer Exiting."
|
||||
}
|
||||
|
||||
# --- Script Entry Point ---
|
||||
if [[ -n "$1" ]]; then
|
||||
INPUT_FILE_PATH="$1"
|
||||
# Sanitize INPUT_FILE_PATH? Expand ~? Resolve relative paths?
|
||||
# For now, assume it's usable as is.
|
||||
fi
|
||||
|
||||
if [[ -n "$2" ]]; then
|
||||
if [[ "$2" =~ ^[0-9]+$ && "$2" -gt 0 ]]; then
|
||||
CONFIG_REFRESH_INTERVAL_SECONDS="$2"
|
||||
else
|
||||
# Silently use default if invalid, or echo to stderr if not in alt screen mode yet.
|
||||
# Since we go to alt screen immediately, user won't see this.
|
||||
# echo "Warning: Invalid refresh interval '$2'. Using default ${CONFIG_REFRESH_INTERVAL_SECONDS}s." >&2
|
||||
: # Use default
|
||||
fi
|
||||
fi
|
||||
# Removed echo statements that would interfere with TUI.
|
||||
# Any initial messages should be handled after alt_screen if really needed,
|
||||
# or passed to main/display_data.
|
||||
|
||||
main
|
||||
Loading…
Reference in New Issue