qr generator working properly well

2026-06-15 22:14:51 +02:00
parent ab973a9242
commit e36080c258
9 changed files with 120 additions and 0 deletions
--- a/qr_script/qr_generator.py
+++ b/qr_script/qr_generator.py
@@ -0,0 +1,113 @@
+#!/usr/bin/env python3
+"""
+QR Code Generator
+
+Reads a CSV/TSV file where:
+  - First row is a header (skipped).
+  - First column contains the data/text to encode into a QR code.
+  - Second column contains the base name for the output PNG file.
+
+Uses the `qrencode` command-line tool to generate QR codes.
+"""
+
+import argparse
+import csv
+import os
+import subprocess
+import sys
+
+
+def main():
+    parser = argparse.ArgumentParser(
+        description="Generate QR codes from a data file using qrencode."
+    )
+    parser.add_argument(
+        "input_file",
+        help="Path to the input file (CSV or TSV). The first row is treated as a header and skipped.",
+    )
+    parser.add_argument(
+        "-d",
+        "--delimiter",
+        default=None,
+        help="Column delimiter (default: auto-detect — comma for .csv, tab otherwise).",
+    )
+    parser.add_argument(
+        "-o",
+        "--output-dir",
+        default=".",
+        help="Directory to write PNG files into (default: current directory).",
+    )
+    parser.add_argument(
+        "--qrencode",
+        default="qrencode",
+        help="Path to the qrencode binary (default: qrencode).",
+    )
+    parser.add_argument(
+        "--size",
+        type=int,
+        default=10,
+        help="Module size in pixels (qrencode -s, default: 10).",
+    )
+
+    args = parser.parse_args()
+
+    # --- auto-detect delimiter ---
+    if args.delimiter is None:
+        if args.input_file.lower().endswith(".csv"):
+            args.delimiter = ","
+        else:
+            args.delimiter = "\t"
+
+    # --- check qrencode ---
+    try:
+        subprocess.run(
+            [args.qrencode, "--version"],
+            capture_output=True,
+            check=True,
+        )
+    except (FileNotFoundError, subprocess.CalledProcessError):
+        print(
+            f"Error: '{args.qrencode}' not found or not working. Install qrencode (e.g. apt install qrencode).",
+            file=sys.stderr,
+        )
+        sys.exit(1)
+
+    os.makedirs(args.output_dir, exist_ok=True)
+
+    # --- read file and generate QR codes ---
+    with open(args.input_file, "r", encoding="utf-8") as fh:
+        reader = csv.reader(fh, delimiter=args.delimiter)
+        header = next(reader)  # skip header row
+        print(f"Skipped header: {header}")
+
+        count = 0
+        for row_num, row in enumerate(reader, start=2):  # row 2 = first data row
+            if not row or len(row) < 2:
+                print(f"Row {row_num}: skipping (needs at least 2 columns)", file=sys.stderr)
+                continue
+
+            data = row[0].strip()
+            name = row[1].strip()
+
+            if not data or not name:
+                print(f"Row {row_num}: skipping (empty column)", file=sys.stderr)
+                continue
+
+            output_path = os.path.join(args.output_dir, f"{name}.png")
+
+            cmd = [
+                args.qrencode,
+                "-s", str(args.size),
+                "-o", output_path,
+                data,
+            ]
+
+            print(f"Row {row_num}: encoding '{data}' -> {output_path}")
+            subprocess.run(cmd, check=True)
+            count += 1
+
+    print(f"\nDone. Generated {count} QR code(s) in '{args.output_dir}'.")
+
+
+if __name__ == "__main__":
+    main()