markuplift 2.0.1

A configurable XML and HTML formatter.

Markuplift

A configurable XML and HTML formatter for Python

Markuplift provides flexible, configurable formatting of XML and HTML documents. Unlike basic pretty-printers, Markuplift gives you complete control over how your markup is formatted through user-defined predicates for block vs inline elements, whitespace handling, and custom text content formatters.

Key Features

• Configurable element classification - Define block/inline elements using XPath expressions or Python predicates
• Flexible whitespace control - Normalize, preserve, or strip whitespace on a per-element basis
• External formatter integration - Pipe element text content through external tools (e.g., js-beautify, prettier)
• Comprehensive format options - Control indentation, attribute wrapping, self-closing tags, and more
• CLI and Python API - Use from command line or integrate into your Python applications

Quick Start

Installation

Install from PyPI using pip:

pip install markuplift

Or using uv (recommended for modern Python development):

uv add markuplift

For development installation with all dependencies:

git clone https://github.com/rob-smallshire/markuplift.git
cd markuplift
uv sync --all-extras

CLI Usage

# Basic formatting
markuplift format input.xml

# Format with custom block elements
markuplift format input.html --block "//div | //section | //article"

# Use external JavaScript formatter for script tags
markuplift format input.html --text-formatter "//script[@type='text/javascript']" "js-beautify"

# Format from stdin to stdout
cat messy.xml | markuplift format --output formatted.xml

Python API

from markuplift import Formatter
from markuplift.predicates import html_block_elements, tag_in

# Create formatter with HTML-aware defaults
formatter = Formatter(
    block_predicate_factory=html_block_elements(),
    inline_predicate_factory=tag_in("em", "strong", "code", "a"),
    indent_size=2
)

# Format HTML string
messy_html = "<div><p>Hello <em>world</em>!</p><p>Another paragraph.</p></div>"
formatted = formatter.format_str(messy_html)
print(formatted)

Output:

<div>
  <p>Hello <em>world</em>!</p>
  <p>Another paragraph.</p>
</div>

Advanced Example

from markuplift import Formatter
from markuplift.predicates import matches_xpath, html_block_elements

# Custom formatter with XPath-based rules
formatter = Formatter(
    block_predicate_factory=html_block_elements(),
    inline_predicate_factory=matches_xpath("//code | //kbd | //var"),
    normalize_whitespace_predicate_factory=matches_xpath("//p | //div"),
    preserve_whitespace_predicate_factory=matches_xpath("//pre | //script"),
    text_content_formatters={
        matches_xpath("//script[@type='text/javascript']"): lambda text, fmt, level: js_beautify(text),
    }
)

result = formatter.format_str(your_html)

Documentation

• API Documentation - Comprehensive API reference
• User Guide - Detailed usage examples and tutorials
• Predicate Reference - Built-in predicates and custom predicate creation
• CLI Reference - Complete command-line interface documentation

Use Cases

Markuplift is perfect for:

• Web development - Format HTML templates and components with consistent styling
• Data processing - Clean up XML data feeds and configuration files
• Documentation - Standardize markup in documentation systems
• Code generation - Format dynamically generated XML/HTML with precise control
• CI/CD pipelines - Ensure consistent markup formatting across your codebase
• Diffing and version control - Improve readability of markup changes in version control systems

Requirements

• Python 3.12+
• Dependencies: lxml, click

License

Markuplift is released under the MIT License.

Contributing

Contributions are welcome! Please see our Contributing Guide for details on:

• Setting up the development environment
• Running tests and linting
• Submitting pull requests
• Reporting issues