I’m trying to make a Python script that goes through some of our project documents (.pdf) and updates the status/name from R to F. The original text is written in Helvetica, bold, but the new one get slapped on without being bold. I’ve tried every option I could find online, to no avail.

Note that I am not a programmer so this was made via ChatGPT, please don’t flame me 😀

import os
import shutil
import fitz  # PyMuPDF
import re


def rename_and_copy_files():
    base_directory = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'original')
    updated_directory = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'updated')

    if not os.path.exists(updated_directory):
        os.makedirs(updated_directory)

    font_path = "Helvetica-Bold.ttf"
    if not os.path.isfile(font_path):
        print(f"Font file not found: {font_path}")
        return

    for filename in os.listdir(base_directory):
        if '_R_' in filename:
            new_filename = filename.replace('_R_', '_F_')
            src = os.path.join(base_directory, filename)
            dst = os.path.join(updated_directory, new_filename)

            print(f"Processing file: {filename}")

            if filename.endswith('.pdf'):
                update_pdf_text(src, dst, font_path)
            else:
                shutil.copy2(src, dst)

            print(f"Copied and renamed: {filename} to {new_filename}")


def update_pdf_text(src, dst, font_path):
    document = fitz.open(src)

    for page_num in range(len(document)):
        page = document[page_num]
        text_instances = page.search_for("_R_")

        for inst in text_instances:
            rect = fitz.Rect(inst)
            full_text, start_rect, end_rect = extract_full_name(page, rect)

            if not full_text:
                continue

            updated_text = full_text.replace('_R_', '_F_')

            page.draw_rect(fitz.Rect(start_rect.x0, start_rect.y0, end_rect.x1, end_rect.y1), color=(1, 1, 1),
                           fill=(1, 1, 1))

            new_y = start_rect.y0 + 10
            page.insert_text((start_rect.x0, new_y),
                             updated_text,
                             fontsize=10,
                             fontfile=font_path,
                             color=(0, 0, 0))

        single_r_instances = page.search_for(" R ")
        for inst in single_r_instances:
            rect = fitz.Rect(inst)

            page.draw_rect(rect, color=(1, 1, 1), fill=(1, 1, 1))

            new_y = rect.y0 + 10
            page.insert_text((rect.x0, new_y),
                             "F",
                             fontsize=10,
                             fontfile=font_path,
                             color=(0, 0, 0))

    document.save(dst, garbage=4, deflate=True)
    document.close()


def extract_full_name(page, rect):
    full_text = ""
    start_rect = rect
    end_rect = rect
    words = page.get_text("words")

    name_pattern = re.compile(r'[A-Za-z0-9_-]+')

    for word in words:
        word_text = word[4]
        if rect.intersects(fitz.Rect(word[:4])) and name_pattern.match(word_text):
            start_rect = fitz.Rect(word[:4]) if fitz.Rect(word[:4]).x0 < start_rect.x0 else start_rect
            end_rect = fitz.Rect(word[:4]) if fitz.Rect(word[:4]).x1 > end_rect.x1 else end_rect
            full_text += word_text

    return full_text, start_rect, end_rect


if __name__ == "__main__":
    rename_and_copy_files()
    print("Process finished")

I’ve tried using different versions of Helvetica bold (.otf and .ttf), and also tried using other fonts (Comic-sans just to see if it would get picked up, and it didn’t). Without the font file, the program doesn’t do anything, so it must realise it exists… just doesn’t use it.

I’m guessing the issue lies within this part:

page.insert_text((rect.x0, new_y),
                             "F",
                             fontsize=10,
                             fontfile=font_path,
                             color=(0, 0, 0))

However, I’ve ran out of ideas. Any help would be appreciated, thank you! 🙂