Updated Version to 1.2.4 in pyproject.toml

section_class value extended to format latex using "environment". Tes…

.flake8

@@ -12,9 +12,10 @@ exclude =
     __pycache__,
     build,
     dist,
-    .conda
+    .conda,
-    .venv
+    .venv,
-    venv
+    venv,
+    docs/source/api
 
 # Enable specific plugins or options
 # Example: Enabling flake8-docstrings

.github/workflows/ci.yml

@@ -0,0 +1,200 @@
+name: CI Pipeline
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  build-ubuntu-no-optional-dependencies:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        python-version: ["3.10", 3.13]
+
+    steps:
+    - name: Check out code
+      uses: actions/checkout@v4
+
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v5
+      with:
+        python-version: ${{ matrix.python-version }}
+
+    - name: Install from source and install pytest
+      run: |
+        python -m pip install --upgrade pip
+        python -m pip install -e .
+        python -m pip install pytest lxml requests
+
+    - name: Run tests with pytest (no matplotlib, no pandas)
+      run: |
+        pytest tests/test_rendering_markdown.py::test_markdown_styling
+        pytest tests/test_rendering_markdown.py::test_markdown_table
+
+    - name: Install matplotlib
+      run: |
+        python -m pip install matplotlib
+
+    - name: Run tests with pytest rendering equations (with matplotlib)
+      run: |
+        pytest tests/test_rendering_markdown.py::test_markdown_equations
+
+  build-ubuntu:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        python-version: ["3.10", 3.13]
+
+    steps:
+    - name: Check out code
+      uses: actions/checkout@v4
+
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v5
+      with:
+        python-version: ${{ matrix.python-version }}
+
+    - name: Install LaTeX
+      run: sudo apt-get install -y texlive-latex-extra texlive-fonts-recommended lmodern texlive-xetex texlive-science
+
+    - name: Install Python dependencies
+      run: |
+        python -m pip install --upgrade pip
+        python -m pip install -e .[dev]
+
+    - name: Lint code with flake8
+      run: flake8
+
+    - name: Type checking with mypy
+      run: mypy
+
+    - name: Run tests with pytest
+      run: pytest
+
+    - name: Upload rendered files
+      uses: actions/upload-artifact@v4
+      if: strategy.job-index == 0
+      with:
+        name: rendering-results-ubuntu
+        path: tests/out/test_*_render*
+
+  build-windows:
+    runs-on: windows-latest
+
+    strategy:
+      matrix:
+        python-version: ["3.10"]
+
+    steps:
+    - name: Check out code
+      uses: actions/checkout@v4
+
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v5
+      with:
+        python-version: ${{ matrix.python-version }}
+        cache: 'pip'
+
+    - name: Cache MiKTeX Portable
+      uses: actions/cache@v4
+      id: miktex
+      with:
+        path: C:\tmp\cache
+        key: miktex-portable-${{ runner.os }}-24.1-x64
+
+    - if: ${{ steps.miktex.outputs.cache-hit != 'true' }}
+      name: Set up MiKTeX Portable
+      run: |
+        $ProgressPreference = 'SilentlyContinue'
+        Invoke-WebRequest https://www.nonan.net/w/files/miktex-portable-Win-x64.zip -OutFile miktex-portable-Win-x64.zip
+        Expand-Archive miktex-portable-Win-x64.zip -DestinationPath C:\tmp\cache\
+
+    - name: Copy miktex directory
+      run: |
+        robocopy C:\tmp\cache\miktex-portable C:\tmp\test_miktex\miktex-portable /E /NFL /NDL
+        if ($LASTEXITCODE -eq 1) { exit 0 }
+
+    - name: Add miktex to PATH
+      run: |
+        echo "PATH=$PATH;C:\tmp\test_miktex\miktex-portable\texmfs\install\miktex\bin\x64;C:\Program Files\Git\usr\bin" | Out-File -FilePath $env:GITHUB_ENV -Append
+
+    - name: test xelatex
+      run: xelatex --version
+
+    - name: Install Python dependencies
+      run: |
+        python -m pip install -e .[dev]
+
+    - name: Run tests with pytest
+      run: pytest
+
+    - name: Upload rendered files
+      uses: actions/upload-artifact@v4
+      if: strategy.job-index == 0
+      with:
+        name: rendering-results-windows
+        path: tests/out/test_*_render*.pdf
+
+  build-docs:
+    if: github.event_name == 'push'
+    needs: build-ubuntu
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Download rendering outputs
+        uses: actions/download-artifact@v4
+        with:
+          name: rendering-results-ubuntu
+          path: docs/build/html/files/
+
+      - name: Set up Python
+        uses: actions/setup-python@v3
+        with:
+          python-version: "3.x"
+
+      - name: Install package and dependencies
+        run: pip install .[doc_build]
+
+      - name: Generate Class List
+        run: python ./docs/source/generate_class_list.py
+
+      - name: Build Docs
+        run: |
+          mkdir -p docs/source/media
+          cp media/* docs/source/media/
+          mkdir -p docs/source/tests
+          cp tests/test_rendering_example*.py docs/source/tests/
+          cp LICENSE docs/source/LICENSE.md
+          cd docs
+          sphinx-apidoc -o source/ ../src/ -M --no-toc
+          rm ./source/*.rst
+          make html
+          touch ./build/html/.nojekyll
+          mkdir -p ./build/html/_autogenerated
+          cp ./build/html/api/* ./build/html/_autogenerated/
+
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: docs/build/html
+
+  deploy:
+    if: github.event_name == 'push'
+    needs: build-docs
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      pages: write
+      id-token: write
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4

.github/workflows/publish.yml

@@ -0,0 +1,39 @@
+name: Publish to PyPI
+
+on:
+  push:
+    tags:
+      - "v*"
+
+jobs:
+  publish:
+    name: Build and publish
+    runs-on: ubuntu-latest
+
+    environment:
+      name: pypi
+      url: https://pypi.org/project/${{ github.event.repository.name }}/
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Ensure this is main branch
+        if: github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/tags/v')
+        run: echo "Proceeding with publish"
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.11"
+
+      - name: Install build tools
+        run: python -m pip install --upgrade build twine
+
+      - name: Build package
+        run: python -m build
+
+      - name: Publish to PyPI
+        env:
+          TWINE_USERNAME: __token__
+          TWINE_PASSWORD: ${{ secrets.PYPI_API_TOKEN }}
+        
+        run: python -m twine upload dist/*

.gitignore

@@ -69,7 +69,8 @@ instance/
 .scrapy
 
 # Sphinx documentation
-docs/_build/
+docs/build/
+docs/source/api/
 
 # PyBuilder
 .pybuilder/
@@ -132,3 +133,4 @@ pyModbusTCP_old/
 test.py
 test_*.ipynb
 settings.json
+tests/out/test*

README.md

@@ -1,41 +1,47 @@
 # Pyladoc
 
 ## Description
-Pyladoc is a python package for programmatically generating HTML and
+Pyladoc is a Python package for programmatically generating HTML and
-PDF/LaTeX output. This package targets specifically applications where reports
+PDF/LaTeX output. This package specifically targets applications where reports
-or results with Pandas-tables and Matplotlib-figures are generated programmatically
+or results with Pandas tables and Matplotlib figures are generated 
-to be displayed as website and as PDF document without any manual formatting
+to be displayed as a website and as a PDF document without involving any manual
-steps.
+formatting steps.
 
 This package focuses on the "Document in Code" approach for cases
 where a lot of calculations and data handling is done but not a lot of
-document text needs to be displayed.
+document text needs to be displayed. The multiline string capability of Python
+handles this very well. In comparison to "Code in Document" templates,
+Python tools support this approach out of the box—similar to docstrings.
 
-As backend for PDF generation LaTeX is used. There are excellent engines for
+LaTeX is used as the backend for PDF generation. There are excellent engines for
-rendering HTML to PDF available, but even if there is no requirement for an
+rendering HTML to PDF, but even if there is no requirement for
-accurate typesetting, placing programmatically content of variable
+accurate typesetting, placing programmatically generated content of variable
-composition and element sizes on fixed size pages without manual intervention
+composition and element sizes on fixed-size pages without manual intervention
-is a hard problem that LaTeX is very capable of.
+is a hard problem where LaTeX is superior.
 
 ## Example outputs
-The following documents are generated by [tests/test_rendering_example1_doc.py](tests/test_rendering_example1_doc.py):
 
-- HTML: [test_html_render1.html](https://html-preview.github.io/?url=https://github.com/Nonannet/pyladoc/blob/main/tests/out/test_html_render1.html)
+[![example output](media/output_example.png)](https://nonannet.github.io/pyladoc/files/test_latex_render1.pdf)
-- PDF: [test_latex_render1.pdf](https://raw.githubusercontent.com/Nonannet/pyladoc/refs/heads/main/tests/out/test_latex_render1.pdf)
+
+- HTML: [test_html_render1.html](https://nonannet.github.io/pyladoc/files/test_html_render1.html)
+- PDF: [test_latex_render1.pdf](https://nonannet.github.io/pyladoc/files/test_latex_render1.pdf) ([LaTeX](https://nonannet.github.io/pyladoc/files/test_html_render1.tex))
+
+The documents are generated by the script [tests/test_rendering_example1_doc.py](tests/test_rendering_example1_doc.py).
 
 ### Supported primitives
 - Text (can be Markdown or HTML formatted)
 - Headings
 - Tables (Pandas, Markdown or HTML)
 - Matplotlib figures
-- LaTeX equations (Block or inline)
+- LaTeX equations (block or inline)
-- Named references for figures, tables and equation
+- Named references for figures, tables, and equations
 
 ### Key Features
 - HTML and PDF/LaTeX rendering of the same document
 - Single file output including figures
-- Figure and equation embedding in HTML by inline SVG, SVG in Base64 or PNG in Base64
+- Figure and equation embedding in HTML by inline SVG, SVG in Base64, or PNG in Base64
 - Figure embedding in LaTeX as PGF/TikZ
+- Tested on Linux and Windows
 
 ### Usage Scenarios
 - Web services
@@ -48,8 +54,30 @@ It can be installed with pip:
 pip install pyladoc
 ```
 
+As well as with conda:
+```bash
+conda install conda-forge::pyladoc
+```
+
+## Dependencies
+Pyladoc depends on the markdown package.
+
+Optional dependencies are:
+- Matplotlib Python package for rendering LaTeX equations for HTML output
+- LaTeX for exporting to PDF or exporting Matplotlib figures to LaTeX (PGF/TikZ rendering)
+- Pandas and Jinja2 for rendering Pandas tables
+- Matplotlib for rendering Matplotlib figures (obviously)
+
+For the included template, the `miktex` LaTeX distribution works on Windows
+and the following LaTeX setup works on Ubuntu (both tested in CI):
+
+```bash
+sudo apt-get update
+sudo apt-get install -y texlive-latex-extra texlive-fonts-recommended lmodern texlive-xetex texlive-science
+```
+
 ## Usage
-It is easy to use as the following example code shows:
+It is easy to use, as the following example code shows:
 
 ```python
 import pyladoc
@@ -85,7 +113,7 @@ doc.to_pdf('test.pdf')
 ```
 
 ## Contributing
-Contributions are welcome, please open an issue or submit a pull request on GitHub.
+Contributions are welcome; please open an issue or submit a pull request on GitHub.
 
 ## Developer Guide
 To get started with developing the `pyladoc` package, follow these steps.
@@ -97,14 +125,14 @@ git clone https://github.com/Nonannet/pyladoc.git
 cd pyladoc
 ```
 
-It's recommended to setup an venv:
+It's recommended to set up a venv:
 
 ```bash
-python -m venv venv
+python -m venv .venv
-source venv/bin/activate  # On Windows use `venv\Scripts\activate`
+source .venv/bin/activate  # On Windows use `.venv\Scripts\activate`
 ```
 
-Install the package and dev-dependencies while keeping files in the
+Install the package and development dependencies while keeping files in the
 current directory:
 
 ```bash

docs/Makefile

@@ -0,0 +1,20 @@
+# Minimal makefile for Sphinx documentation
+#
+
+# You can set these variables from the command line, and also
+# from the environment for the first two.
+SPHINXOPTS    ?=
+SPHINXBUILD   ?= sphinx-build
+SOURCEDIR     = source
+BUILDDIR      = build
+
+# Put it first so that "make" without argument is like "make help".
+help:
+	@$(SPHINXBUILD) -M help "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
+
+.PHONY: help Makefile
+
+# Catch-all target: route all unknown targets to Sphinx using the new
+# "make mode" option.  $(O) is meant as a shortcut for $(SPHINXOPTS).
+%: Makefile
+	@$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)

docs/make.bat

@@ -0,0 +1,35 @@
+@ECHO OFF
+
+pushd %~dp0
+
+REM Command file for Sphinx documentation
+
+if "%SPHINXBUILD%" == "" (
+	set SPHINXBUILD=sphinx-build
+)
+set SOURCEDIR=source
+set BUILDDIR=build
+
+%SPHINXBUILD% >NUL 2>NUL
+if errorlevel 9009 (
+	echo.
+	echo.The 'sphinx-build' command was not found. Make sure you have Sphinx
+	echo.installed, then set the SPHINXBUILD environment variable to point
+	echo.to the full path of the 'sphinx-build' executable. Alternatively you
+	echo.may add the Sphinx directory to PATH.
+	echo.
+	echo.If you don't have Sphinx installed, grab it from
+	echo.https://www.sphinx-doc.org/
+	exit /b 1
+)
+
+if "%1" == "" goto help
+
+%SPHINXBUILD% -M %1 %SOURCEDIR% %BUILDDIR% %SPHINXOPTS% %O%
+goto end
+
+:help
+%SPHINXBUILD% -M help %SOURCEDIR% %BUILDDIR% %SPHINXOPTS% %O%
+
+:end
+popd

docs/source/conf.py

@@ -0,0 +1,33 @@
+# Configuration file for the Sphinx documentation builder.
+#
+# For the full list of built-in configuration values, see the documentation:
+# https://www.sphinx-doc.org/en/master/usage/configuration.html
+
+# -- Project information -----------------------------------------------------
+# https://www.sphinx-doc.org/en/master/usage/configuration.html#project-information
+
+import os
+import sys
+sys.path.insert(0, os.path.abspath("../src/"))
+
+project = 'pyladoc'
+copyright = '2025, Nicolas Kruse'
+author = 'Nicolas Kruse'
+
+# -- General configuration ---------------------------------------------------
+# https://www.sphinx-doc.org/en/master/usage/configuration.html#general-configuration
+
+extensions = ["sphinx.ext.autodoc", "sphinx.ext.napoleon", "sphinx_autodoc_typehints", "myst_parser"]
+
+templates_path = ['_templates']
+exclude_patterns = []
+
+# -- Options for HTML output -------------------------------------------------
+# https://www.sphinx-doc.org/en/master/usage/configuration.html#options-for-html-output
+
+# html_theme = 'alabaster'
+html_theme = 'pydata_sphinx_theme'
+html_static_path = ['_static']
+
+autodoc_inherit_docstrings = True
+autoclass_content = 'both'

docs/source/generate_class_list.py

@@ -0,0 +1,78 @@
+import importlib
+import inspect
+import fnmatch
+from io import TextIOWrapper
+import os
+
+
+def write_classes(f: TextIOWrapper, patterns: list[str], module_name: str, title: str, description: str = '', exclude: list[str] = []) -> None:
+    """Write the classes to the file."""
+    module = importlib.import_module(module_name)
+
+    classes = [
+        name for name, obj in inspect.getmembers(module, inspect.isclass)
+        if (obj.__module__ == module_name and
+            any(fnmatch.fnmatch(name, pat) for pat in patterns if pat not in exclude) and
+            obj.__doc__ and '(Automatic generated stub)' not in obj.__doc__)
+    ]
+
+    if description:
+        f.write(f'{description}\n\n')
+
+    write_dochtree(f, title, classes)
+
+    for cls in classes:
+        with open(f'docs/source/api/{cls}.md', 'w') as f2:
+            f2.write(f'# {module_name}.{cls}\n')
+            f2.write('```{eval-rst}\n')
+            f2.write(f'.. autoclass:: {module_name}.{cls}\n')
+            f2.write('   :members:\n')
+            f2.write('   :undoc-members:\n')
+            f2.write('   :show-inheritance:\n')
+            f2.write('   :inherited-members:\n')
+            f2.write('```\n\n')
+
+
+def write_functions(f: TextIOWrapper, patterns: list[str], module_name: str, title: str, description: str = '', exclude: list[str] = []) -> None:
+    """Write the classes to the file."""
+    module = importlib.import_module(module_name)
+
+    functions = [
+        name for name, obj in inspect.getmembers(module, inspect.isfunction)
+        if (obj.__module__ == module_name and
+            any(fnmatch.fnmatch(name, pat) for pat in patterns if pat not in exclude))
+    ]
+
+    if description:
+        f.write(f'{description}\n\n')
+
+    write_dochtree(f, title, functions)
+
+    for func in functions:
+        if not func.startswith('_'):
+            with open(f'docs/source/api/{func}.md', 'w') as f2:
+                f2.write(f'# {module_name}.{func}\n')
+                f2.write('```{eval-rst}\n')
+                f2.write(f'.. autofunction:: {module_name}.{func}\n')
+                f2.write('```\n\n')
+
+
+def write_dochtree(f: TextIOWrapper, title: str, items: list[str]):
+    f.write('```{toctree}\n')
+    f.write(':maxdepth: 1\n')
+    f.write(f':caption: {title}:\n')
+    for text in items:
+        if not text.startswith('_'):
+            f.write(f"{text}\n")
+    f.write('```\n\n')
+
+
+if __name__ == "__main__":
+    # Ensure the output directory exists
+    os.makedirs('docs/source/api', exist_ok=True)
+
+    with open('docs/source/api/index.md', 'w') as f:
+        f.write('# Classes and functions\n\n')
+        write_classes(f, ['DocumentWriter'], 'pyladoc', title='DocumentWriter Class')
+        write_functions(f, ['*'], 'pyladoc', title='Functions')
+        write_functions(f, ['*'], 'pyladoc.latex', title='Submodule latex')

docs/source/index.md

@@ -0,0 +1,9 @@
+```{toctree}
+:maxdepth: 1
+:hidden:
+api/index
+repo
+```
+
+```{include} ../../README.md
+```

docs/source/repo.md

@@ -0,0 +1,3 @@
+# Code repository
+
+Code repository is on GitHub: [github.com/Nonannet/pyladoc](https://github.com/Nonannet/pyladoc).

pyproject.toml

@@ -1,15 +1,15 @@
 [project]
 name = "pyladoc"
-version = "1.1.0"
+version = "1.2.4"
 authors = [
   { name="Nicolas Kruse", email="nicolas.kruse@nonan.net" },
 ]
 description = "Package for generating HTML and PDF/latex from python code"
 readme = "README.md"
-requires-python = ">=3.8"
+requires-python = ">=3.10"
+license = "MIT"
 classifiers = [
     "Programming Language :: Python :: 3",
-    "License :: OSI Approved :: MIT License",
     "Operating System :: OS Independent",
 ]
 dependencies = [
@@ -19,16 +19,23 @@ dependencies = [
 [project.optional-dependencies]
 dev = [
     "pytest", "flake8", "mypy",
-    "lxml", "types-lxml",
+    "lxml", "types-lxml", "types-Markdown", "pandas-stubs",
     "requests",
     "matplotlib>=3.1.1",
     "pandas>=2.0.0", "Jinja2",
 ]
+doc_build = [
+  "sphinx",
+  "pydata_sphinx_theme",
+  "sphinx-autodoc-typehints",
+  "myst-parser"
+]
 
 [project.urls]
 Homepage = "https://github.com/Nonannet/pyladoc"
 Repository = "https://github.com/Nonannet/pyladoc"
 Issues = "https://github.com/Nonannet/pyladoc/issues"
+documentation = "https://nonannet.github.io/pyladoc/"
 
 [build-system]
 requires = ["setuptools>=61.0", "wheel"]
@@ -38,7 +45,7 @@ build-backend = "setuptools.build_meta"
 where = ["src"]
 
 [tool.setuptools.package-data]
-pyladoc = ["templates/*"]
+pyladoc = ["templates/*", "py.typed"]
 
 [tool.mypy]
 files = ["src"]

src/pyladoc/__init__.py

@@ -8,6 +8,7 @@ from . import latex
 import pkgutil
 from html.parser import HTMLParser
 from io import StringIO
+from . import svg_tools
 
 HTML_OUTPUT = 0
 LATEX_OUTPUT = 1
@@ -32,6 +33,7 @@ else:
         Table = DataFrame | Styler
     except ImportError:
         Table = DataFrame
+        Styler = None
 
     try:
         import matplotlib.pyplot as plt
@@ -58,17 +60,6 @@ def _markdown_to_html(text: str) -> str:
     return html_text
 
 
-def _clean_svg(svg_text: str) -> str:
-    # remove all tags not alllowd for inline svg from metadata:
-    svg_text = re.sub(r'<metadata>.*?</metadata>', '', svg_text, flags=re.DOTALL)
-
-    # remove illegal path-tags without d attribute:
-    return re.sub(r'<path(?![^>]*\sd=)\s.*?/>', '', svg_text, flags=re.DOTALL)
-
-# def _get_templ_vars(template: str) -> list[str]:
-#    return re.findall("<!---START (.+?)--->.*?<!---END .+?--->", template, re.DOTALL)
-
-
 def _drop_indent(text: str, amount: int) -> str:
     """
     Drops a specific number of indentation spaces from a multiline text.
@@ -99,8 +90,9 @@ def _save_figure(fig: Figure, buff: io.BytesIO, figure_format: FFormat, font_fam
             yield ax.xaxis.label
             yield ax.yaxis.label
             yield from ax.get_xticklabels() + ax.get_yticklabels()
-            legend: Mpl_Legend = ax.get_legend()
+            legend = ax.get_legend()
             if legend:
+                assert isinstance(legend, Mpl_Legend)
                 yield from legend.get_texts()
 
     # Store current figure settings
@@ -142,6 +134,7 @@ def escape_html(text: str) -> str:
 
 
 def figure_to_string(fig: Figure,
+                     unique_id: str,
                      figure_format: FFormat = 'svg',
                      font_family: str | None = None,
                      scale: float = 1,
@@ -175,7 +168,7 @@ def figure_to_string(fig: Figure,
         elif figure_format == 'svg' and not base64:
             i = buff.read(2028).find(b'<svg')  # skip xml and DOCTYPE header
             buff.seek(max(i, 0))
-            return _clean_svg(buff.read().decode('utf-8'))
+            return svg_tools.update_svg_ids(svg_tools.clean_svg(buff.read().decode('utf-8')), unique_id)
 
         else:
             image_mime = {"png": "image/png", "svg": "image/svg+xml"}
@@ -218,7 +211,7 @@ def _fillin_reference_names(input_string: str, item_index: dict[str, int]) -> st
     for start, end, ref in replacements:
         assert ref in item_index, f"Reference {ref} does not exist in the document"
         ret.append(input_string[current_pos:start - 1])
-        ret.append(str(item_index[ref]))
+        ret.append(f'<a href="#pyld-ref-{latex.normalize_label_text(ref)}">{item_index[ref]}</a>')
         current_pos = end
     return ''.join(ret) + input_string[current_pos:]
 
@@ -254,30 +247,40 @@ def _create_document_writer() -> 'DocumentWriter':
     return new_dwr
 
 
-def inject_to_template(content: str, template_path: str = '', internal_template: str = '') -> str:
+def inject_to_template(fields_dict: dict[str, str],
+                       template_path: str = '',
+                       internal_template: str = '',
+                       template_string: str = '',
+                       ) -> str:
     """
-    injects a content string into a template. The placeholder <!--CONTENT-->
+    injects content fields into a template. The placeholder <!--CONTENT-->
     will be replaced by the content. If the placeholder is prefixed with a
     '%' comment character, this character will be replaced as well.
 
     Args:
+        fields_dict: A dictionary with field names as keys and content as values
         template_path: Path to a template file
         internal_template: Path to a internal default template
+        template_string: A template string to use directly
 
     Returns:
         Template with included content
     """
+    assert isinstance(fields_dict, dict), 'fields_dict must be a dictionary'
     if template_path:
         with open(template_path, 'r') as f:
             template = f.read()
     elif internal_template:
         template = _get_pkgutil_string(internal_template)
+    elif template_string:
+        template = template_string
     else:
         raise Exception('No template provided')
 
-    assert '<!--CONTENT-->' in template, 'No <!--CONTENT--> expression in template located'
+    def replace_field(match: re.Match[str]) -> str:
-    prep_template = re.sub(r"\%?\s*<!--CONTENT-->", '<!--CONTENT-->', template)
+        return fields_dict.get(match.group(1), match.group(0))
-    return prep_template.replace('<!--CONTENT-->', content)
+
+    return re.sub(r"(?:\%+\s*)?\<!--(.*?)-->", replace_field, template, 0, re.MULTILINE)
 
 
 class DocumentWriter():
@@ -298,13 +301,13 @@ class DocumentWriter():
         self._item_index: dict[str, int] = {}
         self._fig_scale: float = 1
 
-    def _add_item(self, ref_id: str, ref_type: str, caption_prefix: str) -> str:
+    def _add_item(self, ref_id: str, ref_type: str, caption_prefix: str) -> tuple[str, str]:
         current_index = self._item_count.get(ref_type, 0) + 1
         if not ref_id:
-            ref_id = str(current_index)
+            ref_id = f"auto{current_index}"
         self._item_index[f"{ref_type}:{ref_id}"] = current_index
         self._item_count[ref_type] = current_index
-        return caption_prefix.format(current_index)
+        return caption_prefix.format(current_index), latex.normalize_label_text(f"{ref_type}:{ref_id}")
 
     def _equation_embedding_reescaping(self, text: str) -> str:
         """
@@ -333,11 +336,10 @@ class DocumentWriter():
                 parts = latex_label.split(':')
                 ref_type = parts[0]
                 ref_id = parts[1]
-                caption = self._add_item(ref_id, ref_type, '({})')
+                caption, reference = self._add_item(ref_id, ref_type, '({})')
-                return (f'\n<latex type="block" ref_type="{ref_type}"'
+                return (f'<latex type="block" reference="{reference}" caption="{caption}">{content}</latex>')
-                        f' ref_id="{ref_id}" caption="{caption}">{content}</latex>\n')
             else:
-                return f'\n<latex type="block">{content}</latex>\n'
+                return f'<latex type="block">{content}</latex>'
 
         result = block_pattern.sub(block_repl, text)
 
@@ -349,16 +351,16 @@ class DocumentWriter():
 
         return inline_pattern.sub(inline_repl, result)
 
-    def _get_equation_html(self, latex_equation: str, caption: str, block: bool = False) -> str:
+    def _get_equation_html(self, latex_equation: str, caption: str, reference: str, block: bool = False) -> str:
         fig = latex_to_figure(latex_equation)
         if block:
-            ret = ('<div class="equation-container">'
+            fig_str = figure_to_string(fig, reference, self._figure_format, base64=self._base64_svgs)
-                   '<div class="equation">%s</div>'
+            ret = ('<div class="equation-container" '
-                   '<div class="equation-number">%s</div></div>') % (
+                   f'id="pyld-ref-{reference}">'
-                        figure_to_string(fig, self._figure_format, base64=self._base64_svgs),
+                   f'<div class="equation">{fig_str}</div>'
-                        caption)
+                   f'<div class="equation-number">{caption}</div></div>')
         else:
-            ret = '<span class="inline-equation">' + figure_to_string(fig, self._figure_format, base64=self._base64_svgs) + '</span>'
+            ret = '<span class="inline-equation">' + figure_to_string(fig, reference, self._figure_format, base64=self._base64_svgs) + '</span>'
 
         plt.close(fig)
         return ret
@@ -372,34 +374,56 @@ class DocumentWriter():
                 self.modified_html = StringIO()
                 self.in_latex: bool = False
                 self.eq_caption: str = ''
+                self.reference: str = ''
                 self.block: bool = False
+                self.p_tags: int = 0
                 self.dw = document_writer
+                self.latex_count = 0
+                self.self_closing = False
 
             def handle_starttag(self, tag: str, attrs: list[tuple[str, str | None]]) -> None:
                 if tag == 'hr':
                     self.modified_html.write(f"<{tag}>")
+                    self.self_closing = True
                 elif tag == 'latex':
                     self.in_latex = True
                     attr_dict = {k: v if v else '' for k, v in attrs}
                     self.eq_caption = attr_dict.get('caption', '')
+                    if 'reference' in attr_dict:
+                        self.reference = attr_dict['reference']
+                    else:
+                        self.latex_count += 1
+                        self.reference = f"auto_id_{self.latex_count}"
                     self.block = attr_dict.get('type') == 'block'
                 elif not self.in_latex:
                     tag_text = self.get_starttag_text()
                     if tag_text:
+                        self.self_closing = tag_text.endswith('/>')
                         self.modified_html.write(tag_text)
+                    if tag == 'p':
+                        self.p_tags += 1
 
             def handle_data(self, data: str) -> None:
                 if self.in_latex:
-                    self.modified_html.write(
+                    eq_html = self.dw._get_equation_html(data, self.eq_caption, self.reference, self.block)
-                        self.dw._get_equation_html(data, self.eq_caption, self.block))
+                    if self.p_tags > 0 and self.block:
+                        # If a block equation (with divs) is inside a p tag: close and reopen it
+                        self.modified_html.write(f"</p>{eq_html}<p>")
+                    else:
+                        self.modified_html.write(eq_html)
+
                 else:
                     self.modified_html.write(data)
 
             def handle_endtag(self, tag: str) -> None:
                 if tag == 'latex':
                     self.in_latex = False
+                elif self.self_closing:
+                    self.self_closing = False
                 else:
                     self.modified_html.write(f"</{tag}>")
+                    if tag == 'p' and self.p_tags > 0:
+                        self.p_tags -= 1
 
         parser = HTMLPostProcessor(self)
         parser.feed(html_code)
@@ -431,18 +455,19 @@ class DocumentWriter():
         """
 
         def render_to_html() -> str:
-            caption_prefix = self._add_item(ref_id, ref_type, prefix_pattern)
+            caption_prefix, reference = self._add_item(ref_id, ref_type, prefix_pattern)
-            return '<div class="figure">%s%s</div>' % (
+            return '<div id="pyld-ref-%s" class="figure">%s%s</div>' % (
-                figure_to_string(fig, self._figure_format, base64=self._base64_svgs, scale=self._fig_scale),
+                reference,
+                figure_to_string(fig, reference, self._figure_format, base64=self._base64_svgs, scale=self._fig_scale),
                 '<br>' + caption_prefix + escape_html(caption) if caption else '')
 
         def render_to_latex() -> str:
-            self._add_item(ref_id, ref_type, prefix_pattern)
+            _, reference = self._add_item(ref_id, ref_type, prefix_pattern)
             return '\\begin{figure}%s\n%s\n\\caption{%s}\n%s\\end{figure}' % (
                 '\n\\centering' if centered else '',
-                figure_to_string(fig, 'pgf', self._font_family, scale=self._fig_scale),
+                figure_to_string(fig, reference, 'pgf', self._font_family, scale=self._fig_scale),
                 latex.escape_text(caption),
-                '\\label{%s}\n' % latex.normalize_label_text(ref_type + ':' + ref_id) if ref_id else '')
+                '\\label{%s}\n' % latex.normalize_label_text(reference) if ref_id else '')
 
         self._doc.append([render_to_html, render_to_latex])
 
@@ -462,27 +487,27 @@ class DocumentWriter():
             centered: Whether to center the table in LaTeX output
         """
         assert Table and isinstance(table, Table), 'Table has to be a pandas DataFrame oder DataFrame Styler'
-        styler = table if isinstance(table, Styler) else getattr(table, 'style', None)
+        styler = table if Styler and isinstance(table, Styler) else getattr(table, 'style', None)  # type: ignore[truthy-function]
-        assert isinstance(styler, Styler), 'Jinja2 package is required for rendering tables'
+        assert Styler and isinstance(styler, Styler), 'Jinja2 package is required for rendering pandas tables'  # type: ignore[truthy-function]
 
         def render_to_html() -> str:
-            caption_prefix = self._add_item(ref_id, ref_type, prefix_pattern)
+            caption_prefix, reference = self._add_item(ref_id, ref_type, prefix_pattern)
+
             html_string = styler.to_html(table_uuid=ref_id, caption=caption_prefix + escape_html(caption))
-            return re.sub(r'<style.*?>.*?</style>', '', html_string, flags=re.DOTALL)
+            return f'<div id="pyld-ref-{reference}">' + re.sub(r'<style.*?>.*?</style>', '', html_string, flags=re.DOTALL) + '</div>'
 
         def render_to_latex() -> str:
-            self._add_item(ref_id, ref_type, prefix_pattern)
+            _, reference = self._add_item(ref_id, ref_type, prefix_pattern)
-            ref_label = latex.normalize_label_text(ref_type + ':' + ref_id)
             if self._table_renderer == 'pandas':
                 return styler.to_latex(
-                    label=ref_label,
+                    label=reference,
                     hrules=True,
                     convert_css=True,
                     siunitx=True,
                     caption=latex.escape_text(caption),
                     position_float='centering' if centered else None)
             else:
-                return latex.render_pandas_styler_table(styler, caption, ref_label, centered)
+                return latex.render_pandas_styler_table(styler, caption, reference, centered)
 
         self._doc.append([render_to_html, render_to_latex])
 
@@ -581,12 +606,12 @@ class DocumentWriter():
         """
 
         def render_to_html() -> str:
-            caption = self._add_item(ref_id, ref_type, '({})')
+            caption, reference = self._add_item(ref_id, ref_type, '({})')
-            return self._get_equation_html(latex_equation, caption)
+            return self._get_equation_html(latex_equation, caption, reference, block=True)
 
         def render_to_latex() -> str:
-            self._add_item(ref_id, ref_type, '')
+            _, reference = self._add_item(ref_id, ref_type, '')
-            return latex.get_equation_code(latex_equation, ref_type, ref_id)
+            return latex.get_equation_code(latex_equation, reference, block=True)
 
         self._doc.append([render_to_html, render_to_latex])
 
@@ -596,20 +621,19 @@ class DocumentWriter():
 
         Args:
             text: The markdown text to add
-            section_class: The class for the text section
+            section_class: The HTML-class and LaTeX-environment name for the text section
         """
         norm_text = _normalize_text_indent(str(text))
 
         def render_to_html() -> str:
-            html = self._html_post_processing(_markdown_to_html(self._equation_embedding_reescaping(norm_text)))
+            html = _markdown_to_html(self._equation_embedding_reescaping(norm_text))
             if section_class:
                 return '<div class="' + section_class + '">' + html + '</div>'
             else:
                 return html
 
         def render_to_latex() -> str:
-            html = _markdown_to_html(
+            html = render_to_html()
-                self._equation_embedding_reescaping(norm_text))
             return latex.from_html(html)
 
         self._doc.append([render_to_html, render_to_latex])
@@ -635,7 +659,7 @@ class DocumentWriter():
         self._base64_svgs = base64_svgs
         self._fig_scale = figure_scale
 
-        return _fillin_reference_names(self._render_doc(HTML_OUTPUT), self._item_index)
+        return self._html_post_processing(_fillin_reference_names(self._render_doc(HTML_OUTPUT), self._item_index))
 
     def to_latex(self, font_family: Literal[None, 'serif', 'sans-serif'] = None,
                  table_renderer: TRenderer = 'simple', figure_scale: float = 1) -> str:
@@ -660,27 +684,37 @@ class DocumentWriter():
     def to_pdf(self, file_path: str,
                font_family: Literal[None, 'serif', 'sans-serif'] = None,
                table_renderer: TRenderer = 'simple',
-               latex_template_path: str = '') -> bool:
+               latex_template_path: str = '',
+               fields_dict: dict[str, str] = {},
+               figure_scale: float = 1,
+               engine: latex.LatexEngine = 'pdflatex') -> bool:
         """
         Export the document to a PDF file using LaTeX.
 
         Args:
             file_path: The path to save the PDF file to
             font_family: Overwrites the front family for figures and the template
+            table_renderer: The renderer for tables (simple: renderer with column type
+                guessing for text and numbers; pandas: using the internal pandas LaTeX renderer)
             latex_template_path: Path to a LaTeX template file. The
                 expression <!--CONTENT--> will be replaced by the generated content.
                 If no path is provided a default template is used.
+            fields_dict: A dictionary with field names as keys and content as values
+                replacing the placeholders <!--KEY--> in the template.
+            figure_scale: Scaling factor for the figure size
+            engine: LaTeX engine (pdflatex, lualatex, xelatex or tectonic)
 
         Returns:
             True if the PDF file was successfully created
         """
-        latex_code = inject_to_template(self.to_latex(font_family, table_renderer),
+        content = self.to_latex(font_family, table_renderer, figure_scale)
+        latex_code = inject_to_template({'CONTENT': content} | fields_dict,
                                         latex_template_path,
-                                        'templates/default_template.tex')
+                                        internal_template='templates/default_template.tex')
 
         if font_family == 'sans-serif':
             latex_code = latex.inject_latex_command(latex_code, '\\renewcommand{\\familydefault}{\\sfdefault}')
-        success, errors, warnings = latex.compile(latex_code, file_path)
+        success, errors, warnings = latex.compile(latex_code, file_path, engine=engine)
 
         if not success:
             print('Errors:')

src/pyladoc/latex.py

@@ -1,6 +1,5 @@
 from html.parser import HTMLParser
-from typing import Generator, Any
+from typing import Generator, Any, Literal, get_args, TYPE_CHECKING
-from pandas.io.formats.style import Styler
 import re
 import os
 import shutil
@@ -8,9 +7,15 @@ import subprocess
 import tempfile
 from .latex_escaping import unicode_to_latex_dict, latex_escape_dict
 
+if TYPE_CHECKING:
+    from pandas.io.formats.style import Styler
+else:
+    try:
+        from pandas.io.formats.style import Styler
+    except ImportError:
+        Styler = None
 
-def basic_formatter(value: Any) -> str:
+LatexEngine = Literal['pdflatex', 'lualatex', 'xelatex', 'tectonic']
-    return escape_text(str(value))
 
 
 def to_ascii(text: str) -> str:
@@ -82,19 +87,18 @@ def escape_text(text: str) -> str:
     return ''.join(ret)
 
 
-def get_equation_code(equation: str, ref_id: str, ref_type: str, block: bool = False) -> str:
+def get_equation_code(equation: str, reference: str | None, block: bool = False) -> str:
     """
     Converts an equation string to LaTeX code.
 
     Args:
         equation: The LaTeX equation string.
-        ref_id: The reference ID for the equation.
+        reference: The reference type and ID for the equation separated by a ':'.
-        ref_type: The type of reference (e.g., 'eq', 'fig', etc.).
     """
     if block:
-        if ref_id:
+        if reference:
-            return '\\begin{equation}\\label{%s:%s}%s\\end{equation}' % (
+            return '\\begin{equation}\\label{%s}%s\\end{equation}' % (
-                normalize_label_text(ref_type), normalize_label_text(ref_id), equation)
+                normalize_label_text(reference), equation)
         else:
             return '\\[%s\\]' % equation
     else:
@@ -114,13 +118,16 @@ def render_pandas_styler_table(df_style: Styler, caption: str = '', label: str =
     Returns:
         The LaTeX code.
     """
+    assert Styler, 'Jinja2 package is required for rendering pandas tables'  # type: ignore[truthy-function]
+    assert isinstance(df_style, Styler), 'df_style has to be of type Styler'
+
     def iter_table(table: dict[str, Any]) -> Generator[str, None, None]:
         yield '\\begin{table}\n'
         if centering:
             yield '\\centering\n'
 
         # Guess column type
-        numeric = re.compile(r'^[<>]?\s*(?:\d+,?)+(?:\.\d+)?(?:\s\D.*)?$')
+        numeric = re.compile('^[<>\\-\u2212]?\\s*(?:\\d+,?)+(?:\\.\\d+)?(?:\\s\\D.*)?$')
         formats = ['S' if all(
             (numeric.match(line[ci]['display_value'].strip()) for line in table['body'])
         ) else 'l' for ci in range(len(table['body'][0])) if table['body'][0][ci]['is_visible']]
@@ -184,6 +191,7 @@ def from_html(html_code: str) -> str:
             self.header_flag = False
             self.attr_dict: dict[str, str] = {}
             self.equation_flag = False
+            self.class_name: str = ''
 
         def handle_starttag(self, tag: str, attrs: list[tuple[str, str | None]]) -> None:
             self.attr_dict = {k: v if v else '' for k, v in attrs}
@@ -210,6 +218,10 @@ def from_html(html_code: str) -> str:
                 self.latex_code.append("\n\n\\noindent\\rule[0.5ex]{\\linewidth}{1pt}\n\n")
             elif tag == 'latex':
                 self.equation_flag = True
+            elif tag == 'div':
+                self.class_name = self.attr_dict.get('class', '')
+                if self.class_name:
+                    self.latex_code.append(f"\n\\begin{{{self.class_name}}}\n")
 
         def handle_endtag(self, tag: str) -> None:
             if tag in html_to_latex:
@@ -235,13 +247,15 @@ def from_html(html_code: str) -> str:
                 self.latex_code.append("}")
             elif tag == 'latex':
                 self.equation_flag = False
+            elif tag == 'div':
+                if self.class_name:
+                    self.latex_code.append(f"\n\\end{{{self.class_name}}}\n")
 
         def handle_data(self, data: str) -> None:
             if self.equation_flag:
                 block = self.attr_dict.get('type') == 'block'
-                ref_id = self.attr_dict.get('ref_id', '')
+                reference = self.attr_dict.get('reference')
-                ref_type = self.attr_dict.get('ref_type', 'eq')
+                self.latex_code.append(get_equation_code(data, reference, block))
-                self.latex_code.append(get_equation_code(data, ref_id, ref_type, block))
             elif data.strip():
                 self.latex_code.append(escape_text(data))
 
@@ -250,7 +264,7 @@ def from_html(html_code: str) -> str:
     return ''.join(parser.latex_code)
 
 
-def compile(latex_code: str, output_file: str = '', encoding: str = 'utf-8') -> tuple[bool, list[str], list[str]]:
+def compile(latex_code: str, output_file: str = '', encoding: str = 'utf-8', engine: LatexEngine = 'pdflatex') -> tuple[bool, list[str], list[str]]:
     """
     Compiles LaTeX code to a PDF file.
 
@@ -258,6 +272,7 @@ def compile(latex_code: str, output_file: str = '', encoding: str = 'utf-8') ->
         latex_code: The LaTeX code to compile.
         output_file: The output file path.
         encoding: The encoding of the LaTeX code.
+        engine: LaTeX engine (pdflatex, lualatex, xelatex or tectonic)
 
     Returns:
         A tuple with three elements:
@@ -266,8 +281,13 @@ def compile(latex_code: str, output_file: str = '', encoding: str = 'utf-8') ->
         - A list of warnings.
     """
 
+    assert engine in get_args(LatexEngine), "engine must be pdflatex, lualatex, xelatex or tectonic"
+
     with tempfile.TemporaryDirectory() as tmp_path:
-        command = ['pdflatex', '-halt-on-error', '--output-directory', tmp_path]
+        if engine == 'tectonic':
+            command = ['tectonic', '--outdir', tmp_path, '-']
+        else:
+            command = [engine, '--halt-on-error', '--output-directory', tmp_path]
 
         errors: list[str] = []
         warnings: list[str] = []
@@ -305,6 +325,17 @@ def compile(latex_code: str, output_file: str = '', encoding: str = 'utf-8') ->
 
 
 def inject_latex_command(text: str, command: str) -> str:
+    """
+    Injects a provided LaTeX code under the last line
+    starting with \\usepackage.
+
+    Args:
+        text: input LaTeX code
+        command: code to inject
+
+    Returns:
+        LaTeX code with injected command
+    """
     lines = text.splitlines()
 
     last_package_index = -1

src/pyladoc/latex_escaping.py

@@ -68,7 +68,8 @@ unicode_to_latex_dict = {
     '£': r'{\pounds}',
     '¥': r'{\yen}',
     '\u00A0': r'~',  # Non-breaking space
-    '\u2007': ' '  # Figure space
+    '\u2007': ' ',  # Figure space
+    '\u2212': '-'  # Unicode minus sign
 }
 
 latex_escape_dict = {

src/pyladoc/svg_tools.py

@@ -0,0 +1,38 @@
+import re
+from re import Match
+
+
+def update_svg_ids(input_svg: str, unique_id: str) -> str:
+    """Add a unique ID part to all svg IDs and update references ti these IDs"""
+    id_mapping: dict[str, str] = {}
+
+    def update_ids(match: Match[str]) -> str:
+        old_id = match.group(1)
+        new_id = f"svg-{unique_id}-{old_id}"
+        id_mapping[old_id] = new_id
+        return f' id="{new_id}"'
+
+    def update_references(match: Match[str]) -> str:
+        old_ref = match.group(1)
+        new_ref = id_mapping.get(old_ref, old_ref)
+        if match.group(0).startswith('xlink:href'):
+            return f'xlink:href="#{new_ref}"'
+        else:
+            return f'url(#{new_ref})'
+
+    # Update IDs
+    svg_string = re.sub(r'\sid="(.*?)"', update_ids, input_svg)
+
+    # Update references to IDs
+    svg_string = re.sub(r'url\(#([^\)]+)\)', update_references, svg_string)
+    svg_string = re.sub(r'xlink:href="#([^\"]+)"', update_references, svg_string)
+
+    return svg_string
+
+
+def clean_svg(svg_text: str) -> str:
+    # remove all tags not alllowd for inline svg from metadata:
+    svg_text = re.sub(r'<metadata>.*?</metadata>', '', svg_text, flags=re.DOTALL)
+
+    # remove illegal path-tags without d attribute:
+    return re.sub(r'<path(?![^>]*\sd=)\s.*?/>', '', svg_text, flags=re.DOTALL)

src/pyladoc/templates/default_template.tex

@@ -16,11 +16,17 @@
 \usepackage{booktabs} % For professional-looking tables
 \usepackage{pgf} % For using pgf grafics
 \usepackage{textcomp, gensymb} % provides \degree symbol
+\usepackage{xcolor}   % For colored text
 
 \sisetup{
   table-align-text-post = false
 }
 
+% Define fine print environment
+\newenvironment{fineprint}
+  {\par\vspace{0.5\baselineskip}\noindent\footnotesize\color{gray}}
+  {\par\vspace{0.5\baselineskip}}
+
 % Geometry Settings
 \geometry{margin=1in} % 1-inch margins
 

src/pyladoc/templates/test_template.html

@@ -21,6 +21,12 @@
         padding-bottom: 50px;
     }
 
+    div.fineprint
+    {
+        font-size: smaller;
+        color: grey;
+    }
+
     div h1
     {
         font-size: 32px;

tests/document_validation.py

@@ -2,10 +2,7 @@ from typing import Generator, Any
 from lxml import etree
 from lxml.etree import _Element as EElement  # type: ignore
 import requests
-
+import pyladoc
-
-with open('src/pyladoc/templates/test_template.html', mode='rt', encoding='utf-8') as f:
-    html_test_template = f.read()
 
 
 def add_line_numbers(multiline_string: str) -> str:
@@ -53,7 +50,7 @@ def validate_html(html_string: str, validate_online: bool = False, check_for: li
         assert tag_type in tags, f"Tag {tag_type} not found in the html code"
 
     if validate_online:
-        test_page = html_test_template.replace('<!--CONTENT-->', html_string)
+        test_page = pyladoc.inject_to_template({'CONTENT': html_string}, internal_template='templates/test_template.html')
         validation_result = validate_html_with_w3c(test_page)
         assert 'messages' in validation_result, 'Validate request failed'
         if validation_result['messages']:

tests/out/README.md

@@ -0,0 +1,3 @@
+# Rendering Test Outputs
+
+This is the target directory for the test renderings.

tests/out/test_html_render1.tex

@@ -1,613 +0,0 @@
-\section{Thermal Conductivity of Mixtures}
-The determination of the thermal conductivity of gas mixtures is a central aspect of modeling
-transport phenomena, particularly in high-temperature and high-pressure processes. Among the
-most established approaches is the empirical equation introduced by Wassiljewa, which was
-subsequently refined by Mason and Saxena to improve its applicability to multicomponent systems.
-This model offers a reliable means of estimating the thermal conductivity of gas mixtures based
-on the properties of the pure components and their molar interactions.
-
-The thermal conductivity of a gas mixture, denoted by \(\lambda_{\text{mix}}\), can expressed as
-shown in equation \ref{eq:lambda-mixture}.
-\begin{equation}\label{eq:lambda-mixture}\lambda_{   ext{mix}} = \sum_{i=1}^{n} \frac{x_i \lambda_i}{\sum_{j=1}^{n} x_j \Phi_{ij}}\end{equation}
-In this equation, \(x_i\) represents the molar fraction of component \(i\) within the mixture,
-while \(\lambda_i\) denotes the thermal conductivity of the pure substance \(i\). The denominator
-contains the interaction parameter \(\Phi_{ij}\), which describes the influence of component
-\(j\) on the transport properties of component \(i\).
-
-The interaction parameter \(\Phi_{ij}\) is given by the relation shown in equation \ref{eq:interaction-parameter}.
-\begin{equation}\label{eq:interaction-parameter}\Phi_{ij} = \frac{1}{\sqrt{8}} \left(1 + \frac{M_i}{M_j} \right)^{-1/2} \left[ 1 + \left( \frac{\lambda_i}{\lambda_j} \right)^{1/2} \left( \frac{M_j}{M_i} \right)^{1/4} \right]^2\end{equation}
-Here, \(M_i\) and \(M_j\) are the molar masses of the components \(i\) and \(j\), respectively.
-Molar masses and thermal conductivity of the pure substances are listed in table \ref{table:gas-probs}.
-The structure of this expression illustrates the nonlinear dependence of the interaction term on
-both the molar mass ratio and the square root of the conductivity ratio of the involved species.
-
-\begin{table}
-\centering
-\caption{Properties of some gases}
-\label{table:gas-probs}
-\begin{tabular}{lSS}
-\toprule
-\text{Gas} & \text{Molar mass in g/mol} & \text{Thermal conductivity in W/m/K} \\
-\midrule
-H2 & 2.016 & 0.1805 \\
-O2 & 32.00 & 0.0263 \\
-N2 & 28.02 & 0.0258 \\
-CO2 & 44.01 & 0.0166 \\
-CH4 & 16.04 & 0.0341 \\
-Ar & 39.95 & 0.0177 \\
-He & 4.0026 & 0.1513 \\
-\bottomrule
-\end{tabular}
-\end{table}This formulation acknowledges that the transport properties of a gas mixture are not a simple
-linear combination of the individual conductivities. Rather, they are governed by intermolecular
-interactions, which affect the energy exchange and diffusion behavior of each component. These
-interactions are particularly significant at elevated pressures or in cases where the gas components
-exhibit widely differing molecular masses or transport properties.
-
-The equation proposed by Wassiljewa and refined by Mason and Saxena assumes that binary interactions
-dominate the behavior of the mixture, while higher-order (three-body or more) interactions are
-neglected. It also presumes that the gases approximate ideal behavior, although in practical
-applications, moderate deviations from ideality are tolerated without significant loss of accuracy.
-In figure \ref{fig:mixture} the resulting thermal conductivity of an H2/CO2-mixture is shown.
-
-\begin{figure}
-\centering
-\begingroup%
-\makeatletter%
-\begin{pgfpicture}%
-\pgfpathrectangle{\pgfpointorigin}{\pgfqpoint{6.400000in}{4.800000in}}%
-\pgfusepath{use as bounding box, clip}%
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-\makeatother%
-\endgroup%
-
-\caption{Thermal Conductivity of H2/CO2 mixtures}
-\label{fig:mixture}
-\end{figure}In engineering practice, the accurate determination of \(\lambda_{\text{mix}}\) is essential
-for the prediction of heat transfer in systems such as membrane modules, chemical reactors, and
-combustion chambers. In the context of membrane-based gas separation, for instance, the thermal
-conductivity of the gas mixture influences the local temperature distribution, which in turn affects
-both the permeation behavior and the structural stability of the membrane.
-
-It is important to note that the calculated mixture conductivity reflects only the gas phase
-behavior. In porous systems such as carbon membranes, additional effects must be considered.
-These include the solid-phase thermal conduction through the membrane matrix, radiative transport
-in pore channels at high temperatures, and transport in the Knudsen regime for narrow pores.
-To account for these complexities, models based on effective medium theory, such as those of
-Maxwell-Eucken or Bruggeman, are frequently employed. These models combine the conductivities of
-individual phases (gas and solid) with geometrical factors that reflect the morphology of the
-porous structure.
-
-
-
-\noindent\rule[0.5ex]{\linewidth}{1pt}
-
-Expanded by more or less sensible AI jabbering; based on: \href{https://doi.org/10.14279/depositonce-7390}{doi:10.14279/depositonce-7390}
-

tests/out/test_markdown_characters.html

@@ -1,5 +0,0 @@
-<h1>Special caracters</h1>
-<p>Umlaute: ÖÄÜ öäü</p>
-<p>Other: ß, €, @, $, %, ~, µ</p>
-<p>Units: m³, cm²</p>
-<p>Controll characters: <, >, ", ', &, |, /, \</p>

tests/out/test_markdown_equations.html

@@ -1,39 +0,0 @@
-<h1>Source Equations</h1>
-<ol>
-<li>$4(3x + 2) - 5(x - 1) = 3x + 14$</li>
-<li>$
-rac{2y + 5}{4} +
-rac{3y - 1}{2} = 5$</li>
-<li>$
-rac{5}{x + 2} +
-rac{2}{x - 2} = 3$</li>
-<li>$8(3b - 5) + 4(b + 2) = 60$</li>
-<li>$2c^2 - 3c - 5 = 0$</li>
-<li>$4(2d - 1) + 5(3d + 2) = 7d + 28$</li>
-<li>$q^2 + 6q + 9 = 16$</li>
-</ol>
-<h1>Result Equations</h1>
-<ol>
-<li>$x =
-rac{1}{4}$</li>
-<li>$y =
-rac{17}{8}$</li>
-<li>$z =
-rac{7}{3}$</li>
-<li>$x = 1$ or $x = -6$</li>
-<li>$a =
-rac{1}{3}$ or $a = 2$</li>
-<li>$x = -
-rac{2}{3}$ or $x = 3$</li>
-<li>$b =
-rac{23}{7}$</li>
-</ol>
-<h1>Step by Step</h1>
-<ol>
-<li>Distribute: $12x + 8 - 5x + 5 = 3x + 14$</li>
-<li>Combine like terms: $7x + 13 = 3x + 14$</li>
-<li>Subtract $3x$: $4x + 13 = 14$</li>
-<li>Subtract $13$: $4x = 1$</li>
-<li>Divide by $4$: $x =
-rac{1}{4}$</li>
-</ol>

tests/out/test_markdown_style.html

@@ -1,44 +0,0 @@
-<p>Below is an in-depth explanation of the AArch64 (ARM64)
-unconditional branch instruction—often simply called the
-“B” instruction—and how its 26‐bit immediate field (imm26)
-is laid out and later relocated during linking.</p>
-<hr></hr>
-<h2>Instruction Layout</h2>
-<p>The unconditional branch in AArch64 is encoded in a 32‑bit
-instruction. Its layout is as follows:</p>
-<pre><code>Bits:  31         26 25                           0
-        +-------------+------------------------------+
-        |  Opcode     |          imm26               |
-        +-------------+------------------------------+
-</code></pre>
-<ul>
-<li><strong>Opcode (bits 31:26):</strong></li>
-<li>For a plain branch (<code>B</code>), the opcode is <code>000101</code>.</li>
-<li>
-<p>For a branch with link (<code>BL</code>), which saves the return
-address (i.e., a call), the opcode is <code>100101</code>.
-These 6 bits determine the instruction type.</p>
-</li>
-<li>
-<p><strong>Immediate Field (imm26, bits 25:0):</strong></p>
-</li>
-<li>This 26‑bit field holds a signed immediate value.</li>
-<li>
-<p><strong>Offset Calculation:</strong> At runtime, the processor:</p>
-<ol>
-<li><strong>Shifts</strong> the 26‑bit immediate left by 2 bits.
-(Because instructions are 4-byte aligned,
-the two least-significant bits are always zero.)</li>
-<li><strong>Sign-extends</strong> the resulting 28‑bit value to
-the full register width (typically 64 bits).</li>
-<li><strong>Adds</strong> this value to the program counter
-(PC) to obtain the branch target.</li>
-</ol>
-</li>
-<li>
-<p><strong>Reach:</strong></p>
-</li>
-<li>With a 26‑bit signed field that’s effectively 28 bits
-  after the shift, the branch can cover a range
-  of approximately ±128 MB from the current instruction.</li>
-</ul>

tests/out/test_markdown_table.html

@@ -1,77 +0,0 @@
-<h2>Klemmen</h2>
-<table>
-<thead>
-<tr>
-<th style="text-align: right;">Anz.</th>
-<th>Typ</th>
-<th>Beschreibung</th>
-</tr>
-</thead>
-<tbody>
-<tr>
-<td style="text-align: right;">12</td>
-<td>BK9050</td>
-<td>Buskoppler</td>
-</tr>
-<tr>
-<td style="text-align: right;">2</td>
-<td>KL1104</td>
-<td>4 Digitaleingänge</td>
-</tr>
-<tr>
-<td style="text-align: right;">2</td>
-<td>KL2404</td>
-<td>4 Digitalausgänge (0,5 A)</td>
-</tr>
-<tr>
-<td style="text-align: right;">3</td>
-<td>KL2424</td>
-<td>4 Digitalausgänge (2 A)</td>
-</tr>
-<tr>
-<td style="text-align: right;">2</td>
-<td>KL4004</td>
-<td>4 Analogausgänge</td>
-</tr>
-<tr>
-<td style="text-align: right;">1</td>
-<td>KL4002</td>
-<td>2 Analogausgänge</td>
-</tr>
-<tr>
-<td style="text-align: right;">22</td>
-<td>KL9188</td>
-<td>Potenzialverteilungsklemme</td>
-</tr>
-<tr>
-<td style="text-align: right;">1</td>
-<td>KL9100</td>
-<td>Potenzialeinspeiseklemme</td>
-</tr>
-<tr>
-<td style="text-align: right;">3</td>
-<td>KL3054</td>
-<td>4 Analogeingänge</td>
-</tr>
-<tr>
-<td style="text-align: right;">5</td>
-<td>KL3214</td>
-<td>PT100 4 Temperatureingänge (3-Leiter)</td>
-</tr>
-<tr>
-<td style="text-align: right;">3</td>
-<td>KL3202</td>
-<td>PT100 2 Temperatureingänge (3-Leiter)</td>
-</tr>
-<tr>
-<td style="text-align: right;">1</td>
-<td>KL2404</td>
-<td>4 Digitalausgänge</td>
-</tr>
-<tr>
-<td style="text-align: right;">2</td>
-<td>KL9010</td>
-<td>Endklemme</td>
-</tr>
-</tbody>
-</table>

tests/test_latex_embedding.py

@@ -22,9 +22,7 @@ def test_latex_embedding2():
     contains the interaction parameter <latex>\Phi_{ij}</latex>, which describes the influence of component
     <latex>j</latex> on the transport properties of component <latex>i</latex>.
 
-    The interaction parameter <latex>\Phi_{ij}</latex> is given by the relation shown in @eq:ExampleFormula2.
+    The interaction parameter <latex>\Phi_{ij}</latex> is given by the relation shown in @eq:ExampleFormula2.<latex type="block" reference="eq:ExampleFormula2" caption="(1)">\Phi_{ij} = \frac{1}{\sqrt{8}} \left(1 + \frac{M_i}{M_j} \right)^{-1/2} \left[ 1 + \left( \frac{\lambda_i}{\lambda_j} \right)^{1/2} \left( \frac{M_j}{M_i} \right)^{1/4} \right]^2</latex>""")
-    <latex type="block" ref_type="eq" ref_id="ExampleFormula2" caption="(1)">\Phi_{ij} = \frac{1}{\sqrt{8}} \left(1 + \frac{M_i}{M_j} \right)^{-1/2} \left[ 1 + \left( \frac{\lambda_i}{\lambda_j} \right)^{1/2} \left( \frac{M_j}{M_i} \right)^{1/4} \right]^2</latex>
-    """)
 
     dummy = pyladoc.DocumentWriter()
     result_string = dummy._equation_embedding_reescaping(test_input)
@@ -44,9 +42,7 @@ def test_latex_embedding():
     """)
 
     expected_output = pyladoc._normalize_text_indent(r"""
-    # Test
+    # Test<latex type="block" reference="eq:ExampleFormula2" caption="(1)">\Phi_{ij} = \frac{1}{\sqrt{8}}</latex>This <latex>i</latex> is inline LaTeX.
-    <latex type="block" ref_type="eq" ref_id="ExampleFormula2" caption="(1)">\Phi_{ij} = \frac{1}{\sqrt{8}}</latex>
-    This <latex>i</latex> is inline LaTeX.
     """)
 
     dummy = pyladoc.DocumentWriter()

tests/test_readme_example.py

@@ -1,6 +1,7 @@
 import pyladoc
 import pandas as pd
 
+
 def test_readme_example():
     doc = pyladoc.DocumentWriter()
 

tests/test_rendering_example1_doc.py

@@ -1,10 +1,10 @@
 import pyladoc
 import matplotlib.pyplot as plt
 import pandas as pd
-import document_validation
+from . import document_validation
 import numpy as np
 
-VALIDATE_HTML_CODE_ONLINE = False
+VALIDATE_HTML_CODE_ONLINE = True
 WRITE_RESULT_FILES = True
 
 
@@ -158,7 +158,7 @@ def test_html_render():
 
     if WRITE_RESULT_FILES:
         with open('tests/out/test_html_render1.html', 'w', encoding='utf-8') as f:
-            f.write(pyladoc.inject_to_template(html_code, internal_template='templates/test_template.html'))
+            f.write(pyladoc.inject_to_template({'CONTENT': html_code}, internal_template='templates/test_template.html'))
 
 
 def test_latex_render():
@@ -169,6 +169,8 @@ def test_latex_render():
             f.write(doc.to_latex())
 
         assert doc.to_pdf('tests/out/test_latex_render1.pdf', font_family='serif')
+    else:
+        assert doc.to_pdf('', font_family='serif')  # Write only to temp folder
 
 
 if __name__ == '__main__':

tests/test_rendering_example2_doc.py

@@ -1,7 +1,7 @@
 import pyladoc
 import matplotlib.pyplot as plt
 import pandas as pd
-import document_validation
+from . import document_validation
 
 VALIDATE_HTML_CODE_ONLINE = False
 WRITE_RESULT_FILES = True
@@ -71,16 +71,23 @@ def make_document():
     mydataset = {
         'Row1': ["Line1", "Line2", "Line3", "Line4", "Line5"],
         'Row2': [120, '95 km/h', 110, '105 km/h', 130],
-        'Row3': ['12 g/km', '> 150 g/km', '110 g/km', '1140 g/km', '13.05 g/km'],
+        'Row3': ['12 g/km', '> 150 g/km', '-110 g/km', '1140 g/km', '\u221213.05 g/km'],
         'Row4': ['5 stars', '4 stars', '5 stars', '4.5 stars', '5 stars'],
         'Row5': [3.5, 7.8, 8.5, 6.9, 4.2],
-        'Row6': ['1850 kg', '1500 kg', '1400 kg', '1600 kg', '1700 kg'],
+        'Row6': ['1850 kg', '150 kg', '140 kg', '1600 kg', '17.55 kg'],
-        'Row7': ['600 Nm', '250 Nm', '280 Nm', '320 Nm', '450 Nm']
+        'Row7': ['600 Nm', '250 Nm', '280,8 Nm', '320 Nm', '450 Nm']
     }
     df = pd.DataFrame(mydataset)
 
     doc.add_table(df.style.hide(axis="index"), 'This is a example table', 'example1')
 
+    doc.add_text("This is a fine print test text section. It uses smaller text and uses grey color. This is a fine print test"
+                 "text section. It uses smaller text and uses grey color.", section_class='fineprint')
+
+    doc.add_text("Standard text section. This is normal text without any special formatting. It uses the default text size and color.")
+
+    doc.add_markdown("This is a **fine print** test text section. It uses **smaller text** and uses **grey** color.", section_class='fineprint')
+
     return doc
 
 
@@ -92,15 +99,23 @@ def test_html_render():
 
     if WRITE_RESULT_FILES:
         with open('tests/out/test_html_render2.html', 'w', encoding='utf-8') as f:
-            f.write(pyladoc.inject_to_template(html_code, internal_template='templates/test_template.html'))
+            f.write(pyladoc.inject_to_template({'CONTENT': html_code}, internal_template='templates/test_template.html'))
 
 
 def test_latex_render():
     doc = make_document()
 
-    # print(doc.to_latex())
+    latex_code = doc.to_latex()
+
+    assert r'\begin{tabular}{lSSSSSS}' in latex_code, "Table format not correct in LaTeX output"
+
+    if WRITE_RESULT_FILES:
+        with open('tests/out/test_html_render2.tex', 'w', encoding='utf-8') as f:
+            f.write(latex_code)
 
         assert doc.to_pdf('tests/out/test_latex_render2.pdf', font_family='serif')
+    else:
+        assert doc.to_pdf('', font_family='serif')  # Write only to temp folder
 
 
 if __name__ == '__main__':

tests/test_rendering_markdown.py

@@ -1,5 +1,5 @@
 import pyladoc
-import document_validation
+from . import document_validation
 
 VALIDATE_HTML_CODE_ONLINE = False
 WRITE_RESULT_FILES = True

tests/test_svg.py

@@ -0,0 +1,151 @@
+import pyladoc
+
+
+def test_update_svg_ids():
+    test_str = r"""
+    <g id="figure_1">
+    <g id="patch_1">
+    <path d="M 0 15.0336
+    L 24.570183 15.0336
+    L 24.570183 0
+    L 0 0
+    z
+    " style="fill: #ffffff"/>
+    </g>
+    <g id="axes_1">
+    <g id="text_1">
+        <!-- $\lambda_{\text{mix}}$ -->
+        <g transform="translate(3.042219 10.351343) scale(0.1 -0.1)">
+        <defs>
+        <path id="DejaVuSans-Oblique-3bb" d="M 2350 4316
+
+
+    " clip-path="url(#p8dcad2f367)" style="fill: none; stroke: #000000; stroke-width: 1.5; stroke-linecap: square"/>
+
+
+    <clipPath id="p8dcad2f367">
+    <rect x="57.6" y="41.472" width="357.12" height="266.112"/>
+    </clipPath>
+    </defs>
+
+
+        <path id="DejaVuSans-Oblique-78" d="M 3841 3500
+    L 2234 1784
+
+        </defs>
+        <use xlink:href="#DejaVuSans-Oblique-78" transform="translate(0 0.3125)"/>
+        <use xlink:href="#DejaVuSans-Oblique-69" transform="translate(59.179688 -16.09375) scale(0.7)"/>
+        </g>
+    </g>
+
+    <svg xmlns:xlink="http://www.w3.org/1999/xlink" width="24.570183pt" height="15.0336pt" viewBox="0 0 24.570183 15.0336" xmlns="http://www.w3.org/2000/svg" version="1.1">
+
+    <defs>
+    <style type="text/css">*{stroke-linejoin: round; stroke-linecap: butt}</style>
+    </defs>
+    <g id="figure_1">
+    <g id="patch_1">
+    <path d="M 0 15.0336
+    L 24.570183 15.0336
+    L 24.570183 0
+    L 0 0
+    z
+    " style="fill: #ffffff"/>
+    </g>
+    <g id="axes_1">
+    <g id="text_1">
+        <!-- $\lambda_{\text{mix}}$ -->
+        <g transform="translate(3.042219 10.351343) scale(0.1 -0.1)">
+        <defs>
+        <path id="DejaVuSans-Oblique-3bb" d="M 2350 4316
+    L 3125 0
+    L 2516 0
+    L 2038 2588
+    L 328 0
+    L -281 0
+    L 1903 3356
+    L 1794 3975
+    Q 1725 4369 1391 4369
+    L 1091 4369
+    L 1184 4863
+    L 1550 4856
+    Q 2253 4847 2350 4316
+    z
+    " transform="scale(0.015625)"/>
+        <path id="DejaVuSans-6d" d="M 3328 2828
+    Q 3544 3216 3844 3400
+    Q 4144 3584 4550 3584
+    Q 5097 3584 5394 3201
+    Q 5691 2819 5691 2113
+    L 5691 0
+    L 5113 0
+    L 5113 2094
+    Q 5113 2597 4934 2840
+    Q 4756 3084 4391 3084
+    Q 3944 3084 3684 2787
+    Q 3425 2491 3425 1978
+    L 3425 0
+    L 2847 0
+    L 2847 2094
+    Q 2847 2600 2669 2842
+    Q 2491 3084 2119 3084
+    Q 1678 3084 1418 2786
+    Q 1159 2488 1159 1978
+    L 1159 0
+    L 581 0
+    L 581 3500
+    L 1159 3500
+    L 1159 2956
+    Q 1356 3278 1631 3431
+    Q 1906 3584 2284 3584
+    Q 2666 3584 2933 3390
+    Q 3200 3197 3328 2828
+    z
+    " transform="scale(0.015625)"/>
+        <path id="DejaVuSans-69" d="M 603 3500
+    L 1178 3500
+    L 1178 0
+    L 603 0
+    L 603 3500
+    z
+    M 603 4863
+    L 1178 4863
+    L 1178 4134
+    L 603 4134
+    L 603 4863
+    z
+    " transform="scale(0.015625)"/>
+        <path id="DejaVuSans-78" d="M 3513 3500
+    L 2247 1797
+    L 3578 0
+    L 2900 0
+    L 1881 1375
+    L 863 0
+    L 184 0
+    L 1544 1831
+    L 300 3500
+    L 978 3500
+    L 1906 2253
+    L 2834 3500
+    L 3513 3500
+    z
+    " transform="scale(0.015625)"/>
+        </defs>
+        <use xlink:href="#DejaVuSans-Oblique-3bb" transform="translate(0 0.015625)"/>
+        <use xlink:href="#DejaVuSans-6d" transform="translate(59.179688 -16.390625) scale(0.7)"/>
+        <use xlink:href="#DejaVuSans-69" transform="translate(127.368164 -16.390625) scale(0.7)"/>
+        <use xlink:href="#DejaVuSans-78" transform="translate(146.816406 -16.390625) scale(0.7)"/>
+        </g>
+    </g>
+    </g>
+    </g>
+    </svg>
+    """
+
+    unique_id = 'xx-rgerergre-yy-trhsrthrst--xx'
+
+    result = pyladoc.svg_tools.update_svg_ids(test_str, unique_id)
+
+    print(result)
+
+    assert result.replace(f"svg-{unique_id}-", '') == test_str

tests/test_template_functions.py

@@ -0,0 +1,86 @@
+import pyladoc
+
+
+def test_inject_to_template_html():
+    template = """
+    <!DOCTYPE html>
+    <html lang="en">
+    <head>
+        <meta charset="UTF-8">
+        <meta name="viewport" content="width=device-width, initial-scale=1.0">
+        <title><!--TITLE--></title>
+    </head>
+    <!-- some comment -->
+    <body>
+        <!--CONTENT-->
+    </body>
+    </html>
+    """
+
+    content = "Hello, World!"
+    title = "Test Title"
+
+    result = pyladoc.inject_to_template({'CONTENT': content, 'TITLE': title}, template_string=template)
+
+    print(result)
+
+    assert "Hello, World!" in result
+    assert "<!-- some comment -->" in result  # Keep unrelated HTML comments
+    assert "<title>Test Title</title>" in result
+
+
+def test_inject_to_template_latex():
+    template = """
+\\documentclass[a4paper,12pt]{article}
+
+% Packages
+\\usepackage[utf8]{inputenc}
+\\usepackage[T1]{fontenc}
+\\usepackage{lmodern}  % Load Latin Modern font
+\\usepackage{graphicx} % For including images
+\\usepackage{amsmath}  % For mathematical symbols
+\\usepackage{amssymb}  % For additional symbols
+\\usepackage{hyperref} % For hyperlinks
+\\usepackage{caption}  % For customizing captions
+\\usepackage{geometry} % To set margins
+\\usepackage{natbib}   % For citations
+\\usepackage{float}    % For fixing figure positions
+\\usepackage{siunitx}  % For scientific units
+\\usepackage{booktabs} % For professional-looking tables
+\\usepackage{pgf} % For using pgf grafics
+\\usepackage{textcomp, gensymb} % provides \\degree symbol
+
+\\sisetup{
+  table-align-text-post = false
+}
+
+% Geometry Settings
+\\geometry{margin=1in} % 1-inch margins
+
+% Title and Author Information
+\\title{<!--PROJECT-->}
+<!--AUTHOR-->
+\\date{\\today}
+
+\begin{document}
+
+% Title Page
+\\maketitle
+
+% <!--CONTENT-->
+\\end{document}
+    """
+
+    content = "Hello, World!"
+    project_name = "Test Project"
+    author_name = "Otto"
+
+    result = pyladoc.inject_to_template(
+        {'CONTENT': content, 'PROJECT': project_name, 'AUTHOR': author_name},
+        template_string=template)
+
+    print(result)
+
+    assert "\nOtto\n" in result
+    assert "\\title{Test Project}\n" in result
+    assert "Hello, World!" in result