create_khmer_report("data.yaml", "report.pdf") This guide gives you a complete foundation for handling tasks — from creation and extraction to rendering and OCR. Always test with real Khmer text and use fonts that support the full Unicode range for Khmer (U+1780 to U+17FF, plus U+19E0–U+19FF).
import cairo import pangocairo surface = cairo.PDFSurface("shaped_khmer.pdf", 200, 100) context = cairo.Context(surface) pangocairo_context = pangocairo.CairoContext(context) pangocairo_context.set_antialias(cairo.ANTIALIAS_SUBPIXEL)
with open("data.yaml", "w", encoding="utf-8") as f: yaml.dump(data, f, allow_unicode=True) python khmer pdf
from fpdf import FPDF pdf = FPDF() pdf.add_page() pdf.add_font('khmer', '', 'KhmerOS.ttf', uni=True) pdf.set_font('khmer', size=12) pdf.cell(0, 10, txt="ជំរាបសួរ", ln=1) pdf.output("fpdf_khmer.pdf")
import pdfplumber with pdfplumber.open("khmer_document.pdf") as pdf: for page in pdf.pages: text = page.extract_text() print(text) Works for basic extraction but may fail with complex Khmer glyph order. create_khmer_report("data
import fitz # PyMuPDF doc = fitz.open("khmer_document.pdf") for page in doc: text = page.get_text() print(text) pdfplumber extracts text while preserving layout, good for Khmer.
pangocairo_context.update_layout(layout) pangocairo_context.show_layout(layout) surface.finish() For scanned Khmer PDFs, convert to images then use Tesseract with Khmer language pack. import fitz # PyMuPDF doc = fitz
from pypdf import PdfReader reader = PdfReader("khmer_document.pdf") for page in reader.pages: print(page.extract_text()) Khmer requires reordering of vowels and diacritics. Use pyftsubset + harfbuzz (via weasyprint or cairo ) for proper shaping.
from reportlab.pdfgen import canvas from reportlab.lib.pagesizes import A4 from reportlab.pdfbase import pdfmetrics from reportlab.pdfbase.ttfonts import TTFont pdfmetrics.registerFont(TTFont('KhmerFont', 'KhmerOSBattambang-Regular.ttf'))
Khmer script (អក្សរខ្មែរ) presents unique challenges when generating or extracting PDFs programmatically. Unlike Latin-based scripts, Khmer requires correct rendering of subscripts, diacritics, and vowel ordering. Python offers several libraries to handle these tasks, but careful font and encoding choices are critical. 1. Generating PDFs with Khmer Text Using reportlab Reportlab is a powerful PDF generation library, but it does not natively support complex script shaping. To generate correct Khmer PDFs: