init

.gitignore

@@ -0,0 +1,26 @@
+# Python cache
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+.Python
+
+# Virtual environment
+venv/
+env/
+ENV/
+
+# Output directory (keep structure but ignore contents)
+output/*
+!output/.gitkeep
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# OS
+.DS_Store
+Thumbs.db

Dockerfile

@@ -0,0 +1,28 @@
+FROM ubuntu:24.04
+
+# Install Python and pip
+RUN apt-get update && \
+    apt-get install -y python3 python3-pip python3-venv && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/*
+
+# Copy requirements first for better caching
+COPY requirements.txt /tmp/requirements.txt
+
+# Install Python dependencies
+RUN python3 -m pip install --no-cache-dir -r /tmp/requirements.txt --break-system-packages
+
+# Copy Python script to /usr/local/bin so it survives volume mounts
+COPY picopaper.py /usr/local/bin/picopaper.py
+
+# Set working directory
+WORKDIR /app
+
+# Add /app to Python path so it can find config.py from mounted volume
+ENV PYTHONPATH=/app
+
+# Run as root to allow writing to mounted volumes
+# (The mounted volume will have host user permissions)
+
+# Generate the site on container start
+CMD ["python3", "/usr/local/bin/picopaper.py"]

LICENSE

@@ -0,0 +1,202 @@
+Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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+   See the License for the specific language governing permissions and
+   limitations under the License. 
+

README.md

@@ -0,0 +1,180 @@
+# picopaper
+
+A minimal static site generator for blogs built with Python 3 and Jinja2
+
+- Status: alpha - expect many changes
+- Goals: keeping it simple and easy to understand
+- Demo: 
+
+Show cases:
+
+---
+
+## Features
+
+**Available**:
+- Simple use, easy to understand and modify
+- config file for settings
+- Themes
+- Long- and short form content
+- Pages
+- Static files
+- separate feeds (used for categories, tagging, etc) `/feed/{tag}`
+- exclusion of feeds from main feed (drafts or system notes)
+
+**Ideas**:
+- RSS
+- Dark mode
+- logo
+- custom error pages (404, etc)
+
+**Not planned**:
+
+---
+
+## Usage
+
+### Creating a new page or article
+
+Put markdown file into `items` dir. **Important naming convention**:
+
+```
+2025-10-03_long_building-a-static-site-generator.md
+2025-10-05_short_quick-update_draft.md
+```
+
+Format: `YYYY-MM-DD_type_slug[_feed].md`
+
+- `2025-10-03` - date of the article
+- `_long_` - type of content: `long`, `short`, or `page`
+- `building-a-static-site-generator` - slug/path for the URL
+- `_draft` (optional) - feed tag for categorization
+
+The first `#` header is the title of the article - no frontmatter needed.
+
+**Types of content**:
+- `long` - only title with link to articles will be displayed in feed
+- `short` - title and all content will be displayed
+- `page` - won't be displayed in feed at all
+
+### Feeds
+
+Posts can be tagged with an optional feed category (e.g., `_python`, `_webdev`). Posts with feed tags:
+- Appear on the main page (unless excluded in config)
+- Have their own feed page at `/feed/{tag}/`
+
+**Configuration in `config.py`:**
+```python
+# Exclude specific feeds from main page (they'll still have /feed/name/ pages)
+EXCLUDE_FEEDS_FROM_MAIN = ['draft', 'private']
+```
+
+This is useful for draft posts or topic-specific content you want separated from the main feed.
+
+---
+
+## Installation
+
+1. Create and activate virtual environment:
+```bash
+python3 -m venv venv
+source venv/bin/activate  # On Linux/Mac
+# or: venv\Scripts\activate  # On Windows
+```
+
+2. Install dependencies:
+```bash
+pip install -r requirements.txt
+```
+
+3. Configure your blog in `config.py`:
+```python
+BLOG_TITLE = "My Blog"
+BLOG_DESCRIPTION = "A simple blog built with picopaper"
+THEME = "default"
+```
+
+4. Generate the site:
+```bash
+venv/bin/python picopaper.py
+```
+
+5. Serve locally for testing:
+```bash
+cd output
+python3 -m http.server 8000
+```
+
+Visit http://localhost:8000
+
+### Docker
+
+Build and run with Docker:
+
+```bash
+# Build the image
+docker build -t picopaper .
+
+# Run the container
+docker run --rm -v $(pwd):/app picopaper
+```
+
+For Podman (recommended for rootless):
+
+```bash
+# Build the image
+podman build -t picopaper .
+
+# Run with user namespace mapping
+podman run --rm --userns=keep-id -v $(pwd):/app picopaper
+```
+
+The generated site will be available in the `output/` directory.
+
+---
+
+## Directory Structure
+
+- `items/` - Markdown content files
+- `theme/` - Theme directory containing templates and assets
+  - `default/` - Default theme
+    - `templates/` - Jinja2 templates
+    - `assets/` - CSS and static assets
+- `images/` - Image files (copied to output)
+- `static/` - Static files copied as-is (GPG keys, .well-known, etc.)
+- `output/` - Generated site (do not edit)
+- `config.py` - Blog configuration
+
+## Themes
+
+Themes are organized in the `theme/` directory. Each theme has its own subdirectory containing:
+- `templates/` - Jinja2 template files
+- `assets/` - CSS, JavaScript, and other static assets
+
+To switch themes, change the `THEME` setting in `config.py`
+
+---
+
+## Security
+
+For security concerns or reports, please contact via `hello a t uphillsecurity d o t com` [gpg](https://uphillsecurity.com/gpg).
+
+---
+
+## License
+
+**Apache License**
+
+Version 2.0, January 2004
+
+http://www.apache.org/licenses/
+
+- ✅ Commercial use
+- ✅ Modification
+- ✅ Distribution
+- ✅ Patent use
+- ✅ Private use
+- ✅ Limitations
+- ❌Trademark use
+- ❌Liability
+- ❌Warranty

config.py

@@ -0,0 +1,15 @@
+"""Configuration file for picopaper blog"""
+
+BLOG_TITLE = "picopaper"
+BLOG_DESCRIPTION = "we like simple."
+THEME = "default"
+
+# Exclude specific feeds from the main page (they'll still have their own /feed/name/ pages)
+EXCLUDE_FEEDS_FROM_MAIN = ['draft','private']  # e.g., ['python', 'drafts']
+
+# Navigation bar items - list of dictionaries with 'text' and 'url' keys
+NAVBAR_ITEMS = [
+    {'text': 'Home', 'url': '/'},
+    {'text': 'About', 'url': '/about/'}
+]
+

items/2025-10-04_page_about.md

@@ -0,0 +1,3 @@
+# About
+
+A simple static site generator for your blog or next projects. Please check out the [official documentation](https://git.uphillsecurity.com/cf7/picopaper) for more details.

items/2025-10-05_short_hello-world.md

@@ -0,0 +1,5 @@
+# Hello world
+
+This is a `short` article - the whole content will be displayed in the main feed.
+
+Is is great for short updates, short-form content and all kind of portfolios.

items/2025-10-06_long_your-first-article_tutorial.md

@@ -0,0 +1,5 @@
+# This is your first long article
+
+This is a `long` form articles. In the main feed, it is a simple link to the rest of the content. 
+
+Please check the [official documentation](https://git.uphillsecurity.com/cf7/picopaper) for more details.

items/2025-10-07_short_another-demo-article_gallery.md

@@ -0,0 +1,5 @@
+# Yet another post...
+
+...with an image!
+
+![/images/demo-image.jpeg](/images/demo-image.jpeg)

items/2025-10-08_short_this-is-a-draft_draft.md

@@ -0,0 +1,3 @@
+# Simple draft post
+
+This post should be hidden in the main feed as it is in the `draft` feed which has been excluded in the `config.py` file.

picopaper.py

@@ -0,0 +1,229 @@
+#!/usr/bin/env python3
+
+import os
+import re
+from datetime import datetime
+from pathlib import Path
+from jinja2 import Environment, FileSystemLoader
+import markdown
+from config import BLOG_TITLE, BLOG_DESCRIPTION, THEME, EXCLUDE_FEEDS_FROM_MAIN, NAVBAR_ITEMS
+
+class SSGGGenerator:
+    def __init__(self, items_dir='items', output_dir='output', theme=None, blog_title=None, blog_description=None):
+        self.items_dir = Path(items_dir)
+        self.output_dir = Path(output_dir)
+        self.theme = theme or THEME
+        self.theme_dir = Path('theme') / self.theme
+        self.templates_dir = self.theme_dir / 'templates'
+        self.assets_dir = self.theme_dir / 'assets'
+        self.blog_title = blog_title or BLOG_TITLE
+        self.blog_description = blog_description or BLOG_DESCRIPTION
+        self.exclude_feeds = EXCLUDE_FEEDS_FROM_MAIN
+        self.navbar_items = NAVBAR_ITEMS
+
+        # Setup Jinja2
+        self.env = Environment(loader=FileSystemLoader(self.templates_dir))
+
+        # Setup markdown
+        self.md = markdown.Markdown(extensions=['extra'])
+
+    def parse_filename(self, filename):
+        """Parse filename format: YYYY-MM-DD_type_name[_feed].md"""
+        pattern = r'(\d{4}-\d{2}-\d{2})_(short|long|page)_(.+?)(?:_([a-z0-9-]+))?\.md'
+        match = re.match(pattern, filename)
+
+        if not match:
+            return None
+
+        date_str, post_type, name, feed = match.groups()
+        date = datetime.strptime(date_str, '%Y-%m-%d')
+
+        return {
+            'date': date,
+            'date_str': date.strftime('%Y-%m-%d'),
+            'type': post_type,
+            'name': name,
+            'feed': feed,
+            'filename': filename
+        }
+
+    def read_post(self, filepath):
+        """Read markdown file and extract title and content"""
+        with open(filepath, 'r', encoding='utf-8') as f:
+            content = f.read()
+
+        # Extract title (first # heading)
+        title_match = re.match(r'^#\s+(.+)$', content, re.MULTILINE)
+        title = title_match.group(1) if title_match else 'Untitled'
+
+        # Remove title from content
+        if title_match:
+            content = content[title_match.end():].strip()
+
+        # Convert markdown to HTML
+        html_content = self.md.convert(content)
+
+        return title, html_content
+
+    def collect_posts(self):
+        """Collect and parse all posts from items directory"""
+        posts = []
+
+        if not self.items_dir.exists():
+            print(f"Warning: {self.items_dir} does not exist")
+            return posts
+
+        for filepath in self.items_dir.glob('*.md'):
+            parsed = self.parse_filename(filepath.name)
+
+            if not parsed:
+                print(f"Skipping {filepath.name}: doesn't match naming convention")
+                continue
+
+            title, content = self.read_post(filepath)
+
+            post = {
+                'date': parsed['date_str'],
+                'type': parsed['type'],
+                'name': parsed['name'],
+                'title': title,
+                'content': content,
+                'slug': parsed['name'],
+                'url': f"{parsed['name']}/",
+                'feed': parsed['feed'],
+                'source': filepath.name
+            }
+
+            posts.append(post)
+
+        # Sort by date, newest first
+        posts.sort(key=lambda x: x['date'], reverse=True)
+
+        return posts
+
+    def generate_index(self, posts, feed_name=None):
+        """Generate index.html with all posts (or feed-specific index)"""
+        template = self.env.get_template('index.tmpl')
+
+        if feed_name:
+            title = f"{feed_name} - {self.blog_title}"
+            output_path = self.output_dir / 'feed' / feed_name / 'index.html'
+        else:
+            title = self.blog_title
+            output_path = self.output_dir / 'index.html'
+
+        html = template.render(
+            title=title,
+            blog_title=self.blog_title,
+            blog_description=self.blog_description,
+            navbar_items=self.navbar_items,
+            posts=posts
+        )
+
+        output_path.parent.mkdir(parents=True, exist_ok=True)
+        with open(output_path, 'w', encoding='utf-8') as f:
+            f.write(html)
+
+        print(f"✓ Generated {output_path}")
+
+    def generate_post_page(self, post):
+        """Generate individual post page for 'long' posts"""
+        template = self.env.get_template('post.tmpl')
+
+        html = template.render(
+            title=f"{post['title']} - {self.blog_title}",
+            blog_title=self.blog_title,
+            blog_description=self.blog_description,
+            navbar_items=self.navbar_items,
+            post=post
+        )
+
+        # Create directory for the post slug
+        post_dir = self.output_dir / post['slug']
+        post_dir.mkdir(exist_ok=True)
+
+        # Generate index.html inside the slug directory
+        output_path = post_dir / 'index.html'
+        with open(output_path, 'w', encoding='utf-8') as f:
+            f.write(html)
+
+        print(f"✓ Generated {output_path}")
+
+    def copy_assets(self):
+        """Copy theme assets and images to output directory"""
+        import shutil
+
+        # Copy theme assets
+        if self.assets_dir.exists():
+            dest_dir = self.output_dir / 'assets'
+            if dest_dir.exists():
+                shutil.rmtree(dest_dir)
+            shutil.copytree(self.assets_dir, dest_dir)
+            print(f"✓ Copied theme assets to output")
+
+        # Copy images
+        images_dir = Path('images')
+        if images_dir.exists():
+            dest_dir = self.output_dir / 'images'
+            if dest_dir.exists():
+                shutil.rmtree(dest_dir)
+            shutil.copytree(images_dir, dest_dir)
+            print(f"✓ Copied images/ to output")
+
+        # Copy static files (GPG keys, .well-known, etc.)
+        static_dir = Path('static')
+        if static_dir.exists():
+            for item in static_dir.rglob('*'):
+                if item.is_file():
+                    # Preserve directory structure
+                    rel_path = item.relative_to(static_dir)
+                    dest_path = self.output_dir / rel_path
+                    dest_path.parent.mkdir(parents=True, exist_ok=True)
+                    shutil.copy2(item, dest_path)
+            print(f"✓ Copied static/ to output")
+
+    def generate(self):
+        """Main generation process"""
+        print(f"Starting picopaper generation with theme '{self.theme}'...")
+
+        # Create output directory
+        self.output_dir.mkdir(exist_ok=True)
+
+        # Collect posts
+        all_posts = self.collect_posts()
+        print(f"Found {len(all_posts)} posts")
+
+        # Filter out pages and excluded feeds from main feed
+        feed_posts = [p for p in all_posts
+                      if p['type'] != 'page'
+                      and p['feed'] not in self.exclude_feeds]
+
+        # Generate main index with filtered feed posts
+        self.generate_index(feed_posts)
+
+        # Group posts by feed (include all posts, not just those in main feed)
+        feeds = {}
+        for post in all_posts:
+            if post['feed'] and post['type'] != 'page':
+                feeds.setdefault(post['feed'], []).append(post)
+
+        # Generate feed-specific pages
+        for feed_name, posts in feeds.items():
+            self.generate_index(posts, feed_name)
+
+        # Generate individual pages for long posts and pages
+        for post in all_posts:
+            if post['type'] in ['long', 'page']:
+                self.generate_post_page(post)
+
+        # Copy assets
+        self.copy_assets()
+
+        print(f"\n✓ Site generated successfully in {self.output_dir}/")
+
+def main():
+    generator = SSGGGenerator()
+    generator.generate()
+
+if __name__ == '__main__':
+    main()

requirements.txt

@@ -0,0 +1,2 @@
+jinja2>=3.0.0
+markdown>=3.4.0

static/pubkey.asc

@@ -0,0 +1,6 @@
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+
+Example GPG public key file
+This file will be copied as-is to the output directory
+
+-----END PGP PUBLIC KEY BLOCK-----

theme/default/assets/style.css

@@ -0,0 +1,92 @@
+body {
+    max-width: 800px;
+    margin: 40px auto;
+    padding: 0 20px;
+    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
+    line-height: 1.6;
+    color: #333;
+}
+
+header {
+    border: 1px solid #efefef;
+    padding: 20px;
+    margin-bottom: 40px;
+    border-radius: 10px;
+}
+
+h1 { margin: 0; }
+
+.blog-description {
+    margin: 10px 0 0 0;
+    color: #666;
+    font-size: 0.9em;
+}
+
+.main-nav {
+    margin-top: 15px;
+    font-weight: bold;
+    display: flex;
+    gap: 10px;
+}
+
+.nav-item {
+    padding: 8px 15px;
+    border: 1px solid #efefef;
+    border-radius: 10px;
+    color: #333;
+    text-decoration: none;
+    transition: all 0.2s ease;
+}
+
+.nav-item:hover {
+    background-color: #f5f5f5;
+    border-color: #0066cc;
+    color: #0066cc;
+}
+
+a {
+    color: #0066cc;
+    text-decoration: none;
+    font-size: 0.95em;
+}
+
+
+.post {
+    padding: 15px;
+    margin-top: 10px;
+    border: 1px solid #efefef;
+    border-radius: 10px;
+}
+
+
+.post-meta {
+    color: #666;
+    font-size: 0.9em;
+    margin-bottom: 10px;
+}
+
+.post-title {
+    margin: 10px 0;
+}
+
+.post-title a {
+    color: #333;
+    text-decoration: none;
+}
+
+.post-title a:hover {
+    color: #0066cc;
+}
+
+footer {
+    margin-top: 60px;
+    padding-top: 20px;
+    border-top: 1px solid #efefef;
+    text-align: center;
+    color: #666;
+    font-size: 0.9em;
+}
+
+footer p {
+    font-size: 0.7rem;
+}

theme/default/templates/footer.tmpl

@@ -0,0 +1,3 @@
+<footer>
+    <p>Generated with <a href="https://git.uphillsecurity.com/cf7/picopaper">picopaper</a></p>
+</footer>

theme/default/templates/header.tmpl

@@ -0,0 +1,9 @@
+<header>
+    <h1><a href="/" style="color: #333; text-decoration: none;">{{ blog_title }}</a></h1>
+    <p class="blog-description">{{ blog_description }}</p>
+    <nav class="main-nav">
+        {% for item in navbar_items %}
+        <a href="{{ item.url }}" class="nav-item">{{ item.text }}</a>
+        {% endfor %}
+    </nav>
+</header>

theme/default/templates/index.tmpl

@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    {% include 'meta.tmpl' %}
+</head>
+<body>
+    {% include 'header.tmpl' %}
+
+    <main>
+        {% for post in posts %}
+        <article class="post">
+            <div class="post-meta">{{ post.date }}</div>
+            <h2 class="post-title">
+                {% if post.type == 'long' %}
+                <a href="{{ post.url }}">{{ post.title }}</a>
+                {% else %}
+                {{ post.title }}
+                {% endif %}
+            </h2>
+            {% if post.type == 'short' %}
+            <div class="post-content">
+                {{ post.content | safe }}
+            </div>
+            {% endif %}
+        </article>
+        {% endfor %}
+    </main>
+
+    {% include 'footer.tmpl' %}
+</body>
+</html>

theme/default/templates/meta.tmpl

@@ -0,0 +1,6 @@
+<meta charset="UTF-8">
+<meta name="viewport" content="width=device-width, initial-scale=1.0">
+<meta name="description" content="{{ blog_description }}">
+<title>{{ title }}</title>
+<link rel="icon" type="image/x-icon" href="/assets/favicon.ico">
+<link rel="stylesheet" href="/assets/style.css">

theme/default/templates/post.tmpl

@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    {% include 'meta.tmpl' %}
+</head>
+<body>
+    {% include 'header.tmpl' %}
+
+    <main>
+        <article class="post">
+            <div class="post-meta">{{ post.date }}</div>
+            <h2>{{ post.title }}</h2>
+            <div class="post-content">
+                {{ post.content | safe }}
+            </div>
+        </article>
+    </main>
+
+    {% include 'footer.tmpl' %}
+</body>
+</html>