Add script `resize_b64_str.py`

Resize an image provided in  a Base64 string

nice-scripts/reduce_b64_img.py

@@ -0,0 +1,53 @@
+#!/usr/bin/env python3
+# coding: utf8
+"""
+    Author: freezed <git@freezed.me> 2019-09-06
+    Licence: `GNU GPL v3` GNU GPL v3: http://www.gnu.org/licenses/
+"""
+
+import io
+import base64
+from PIL import Image
+
+
+def main(source_img_b64_str, height=100, width=100):
+    """
+        Resize a Base64 string image
+
+        :param source_img_b64_str:
+        :param height: new height in pixel
+        :param width: new width in pixel
+        :type source_img_b64_str: str A full Base64 encoded image (PNG)
+        :type height: int
+        :type width: int
+        :return: The same image resized Base64 encoded
+        :rtype: str
+
+        :Tests:
+        >>> src = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAS4AAACYCAYAAABapASfAAAA5klEQVR4nO3UsQ2AMBAEwe2U778JSCjAkS3QjHT5RVsAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADwP1Ndp08ArJrqfjdHnwAsmoQL+KBJtAAAAAAAAAAAAAAAAAAAYIsHJxwG/A1QeRMAAAAASUVORK5CYII="
+        >>> main(src)
+        'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAGQAAABkCAYAAABw4pVUAAAATUlEQVR4nO3OQQ0AMAgEMJxu/k3AGwWXbK2CVgEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADAo046wNbpANtNBwAAAH42ANwBv4bl/B8AAAAASUVORK5CYII='
+    """
+
+    head_b64_str = source_img_b64_str.split(",")[0]
+    body_b64_str = source_img_b64_str.split(",")[1]
+
+    body_b64_bytes = base64.b64decode(body_b64_str)
+    body_file_like = io.BytesIO(body_b64_bytes)
+    body_pil_image = Image.open(body_file_like)
+
+    resized_body_pil_image = body_pil_image.resize((height, width))
+
+    new_img_bytes = io.BytesIO()
+    resized_body_pil_image.save(new_img_bytes, format="PNG")
+    new_img_bytes = new_img_bytes.getvalue()
+
+    new_body_b64_str = base64.b64encode(new_img_bytes).decode()
+
+    return "{},{}".format(head_b64_str, new_body_b64_str)
+
+
+if __name__ == "__main__":
+    import doctest
+
+    doctest.testmod()