🔍 Code Extractor

Generates sample signature images (PNG files) for a predefined list of names and saves them to a 'signatures' directory.

Purpose

This function automates the creation of signature image files for testing or demonstration purposes in an audit system. It creates a signatures directory if it doesn't exist, then generates PNG signature images for four predefined names (Jane Smith, John Doe, Emily Johnson, Michael Brown) representing different roles in an audit workflow (Author, Reviewer 1, Reviewer 2, Approver). The generated signatures can be used with a main application that supports signature inclusion.

Source Code

def main():
    """Generate sample signatures for the example JSON data"""
    # Create signatures directory if it doesn't exist
    signatures_dir = os.path.join(os.path.dirname(__file__), 'signatures')
    if not os.path.exists(signatures_dir):
        os.makedirs(signatures_dir)
        logger.info(f"Created signatures directory: {signatures_dir}")
    
    # Sample names from the example audit data
    names = [
        "Jane Smith",       # Author
        "John Doe",         # Reviewer 1
        "Emily Johnson",    # Reviewer 2
        "Michael Brown"     # Approver
    ]
    
    # Generate signatures for each name
    for name in names:
        # Create a filename from the name (lower case, spaces to underscores)
        filename = name.lower().replace(" ", "_") + ".png"
        output_path = os.path.join(signatures_dir, filename)
        
        # Create the signature
        create_signature_image(name, output_path)
    
    logger.info(f"Generated {len(names)} sample signatures in {signatures_dir}")
    logger.info("You can now run main.py with include_signatures=True")

Return Value

This function returns None (implicitly). It performs side effects by creating a directory and generating PNG image files on the filesystem.

Dependencies

• os
• logging
• PIL
• numpy

Required Imports

import os
import logging

Conditional/Optional Imports

These imports are only needed under specific conditions:

from PIL import Image

from PIL import ImageDraw

from PIL import ImageFont

import numpy as np

Usage Example

import os
import logging
from PIL import Image, ImageDraw, ImageFont
import numpy as np

# Setup logger
logger = logging.getLogger(__name__)
logging.basicConfig(level=logging.INFO)

# Define the create_signature_image function (required dependency)
def create_signature_image(name, output_path):
    img = Image.new('RGB', (300, 100), color='white')
    draw = ImageDraw.Draw(img)
    draw.text((10, 40), name, fill='black')
    img.save(output_path)
    logger.info(f"Created signature: {output_path}")

# Call the main function
main()

# Result: Creates 'signatures' directory with 4 PNG files:
# - jane_smith.png
# - john_doe.png
# - emily_johnson.png
# - michael_brown.png

Best Practices

• Ensure the create_signature_image function is properly defined before calling main()
• Configure logging before calling this function to see informational messages
• Verify write permissions exist in the target directory before execution
• The function uses os.path.dirname(__file__) which requires the script to be run as a file (not in interactive mode)
• The hardcoded list of names should be modified if different sample signatures are needed
• Consider making the names list a parameter if this function needs to be more flexible
• The function assumes create_signature_image handles errors internally; add error handling if needed

Tags

Similar Components

AI-powered semantic similarity - components with related functionality:

• class SignatureGenerator 63.7% similar

  A class that generates signature-like images from text names using italic fonts and decorative flourishes.

  From: /tf/active/vicechatdev/document_auditor/src/utils/signature_generator.py

• function create_signature_image 61.1% similar

  Generates a synthetic signature image for a given name, either as stylized text or as a random hand-drawn curve, and saves it as a PNG file with transparent background.

  From: /tf/active/vicechatdev/document_auditor/generate_sample_signatures.py

• class SignatureManager 60.1% similar

  A class that manages digital signature images for documents, providing functionality to store, retrieve, and list signature files in a designated directory.

  From: /tf/active/vicechatdev/document_auditor/src/security/signature_manager.py

• class SignatureImage_v1 51.5% similar

  A custom ReportLab Flowable class that renders signature images in PDF documents with automatic fallback to placeholder text when images are unavailable or cannot be loaded.

  From: /tf/active/vicechatdev/document_auditor/src/audit_page_generator.py

• function main_v48 51.3% similar

  Entry point function that demonstrates document processing workflow by creating an audited, watermarked, and protected PDF/A document from a DOCX file with audit trail data.

  From: /tf/active/vicechatdev/document_auditor/main.py