YS-L/csvlens
Csvlens
Csvlens is a terminal-based tabular data explorer and memory-mapped browser designed for viewing and navigating large CSV files. It functions as a command-line interface for inspecting massive structured datasets while maintaining a constant memory footprint.
The tool provides a text-based user interface for exploring data, featuring a custom layout engine that supports column resizing, line wrapping, and frozen headers. It includes a search mechanism to locate and visually highlight text patterns using regular expressions.
Capabilities cover data manipulation through alphabetical or natural sorting and regex-driven row and column filtering. The tool also supports data extraction, allowing users to select specific rows or cells and export them to the system standard output.
Features
- Memory-Mapped File Access - Maps file contents directly into the virtual address space to browse massive datasets with minimal memory usage.
- Command-Line Viewers - Provides a memory-efficient command-line utility for inspecting and navigating large structured CSV files.
- Regex Row Filters - Filters rows by matching columns against regular expression patterns to dynamically exclude non-matching records.
- Large CSV Inspection - Allows navigation of massive tabular files in the terminal without overloading system memory or crashing.
- Streaming File Reads - Reads large files in chunks on demand to maintain a constant memory footprint during navigation.
- Tabular Data Filtering - Filters and sorts tabular text files using regular expressions and exports specific row subsets.
- Command Line Data Explorers - Enables navigating and analyzing structured data files directly within the terminal using regex filtering.
- Terminal Data Interfaces - Provides a terminal interface for sorting, searching, and organizing large datasets for rapid manual inspection.
- Large Dataset Explorers - Implements a TUI optimized for the interactive exploration of large-scale tabular data.
- CSV Data Visualizers - Offers a terminal-based interface for displaying large CSV files with support for piped input.
- Terminal Rendering Engines - Provides a stateful terminal-based UI for visualizing tabular data using a custom layout engine.
- Data Export - Exports marked rows or specific selected cells to standard output for use with external analysis tools.
- Tabular Data Exports - Extracts specific rows or cells from large CSV files to pipe into other analysis tools.
- Field Boundary Indexing - Implements initial boundary-scan indexing to enable rapid jumping and column-specific operations without re-reading the entire file.
- Tabular Data Sorting - Reorders rows based on a selected column using standard or natural alphabetical sorting.
- Search Match Highlighting - Locates text matching a regular expression and visually highlights all occurrences within the tabular dataset.
- Standard Stream Piping - Streams filtered or marked data selections to the system standard output for integration with shell pipelines.
- Tabular View Adjustments - Allows users to modify column widths, toggle line wrapping, and freeze columns for improved readability.
- Productivity and Utilities - Command-line viewer for CSV files.
Star history
How this analysis was created: This summary and feature list were written by an AI model that read the project's README and public documentation pages. Each feature links to the documentation it came from; stars, license and language come straight from the GitHub API. The model does not read the source code, and the analysis is refreshed when the project is re-analysed. Learn more on our About page.
