From 353b7de86f790a2ee03f2573218d15d51a855043 Mon Sep 17 00:00:00 2001
From: Jules Laplace <julescarbon@gmail.com>
Date: Mon, 26 Nov 2018 22:31:46 +0100
Subject: scrape vam

---
 browser.py | 62 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100644 browser.py

(limited to 'browser.py')

diff --git a/browser.py b/browser.py
new file mode 100644
index 0000000..f808f9b
--- /dev/null
+++ b/browser.py
@@ -0,0 +1,62 @@
+from multiprocessing import Pool
+import os
+import requests
+import time
+from PIL import Image
+
+headers = {
+  'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36',
+}
+
+def fetch_file(url, fn, **kwargs):
+  try:
+    resp = requests.get(url, params=kwargs, headers=headers, verify=False)
+    if resp.status_code != 200:
+      return None
+  except:
+    return None
+  size = 0
+  if os.path.exists(fn):
+    return
+  with open(fn, 'wb') as f:
+    for chunk in resp.iter_content(chunk_size=1024):
+      if chunk:
+        size += len(chunk)
+        f.write(chunk)
+  print("{} kb. {}".format(round(size / 1024), fn))
+  return None
+
+def fetch_raw(url, **kwargs):
+  try:
+    resp = requests.get(url, params=kwargs, headers=headers, verify=False)
+    if resp.status_code != 200:
+      return None
+  except:
+    return None
+  return resp.text
+
+def fetch_json(url, **kwargs):
+  try:
+    resp = requests.get(url, params=kwargs, headers=headers, verify=False)
+    if resp.status_code != 200:
+      return None
+  except:
+    return None
+  return resp.json()
+
+# Run this with a pool of 5 agents having a chunksize of 3 until finished
+def parallel_fetch(dataset):
+  print("Fetching {} tiles".format(len(dataset)))
+  agents = 5
+  chunksize = 3
+  with Pool(processes=agents) as pool:
+    pool.starmap(fetch_file, dataset, chunksize)
+
+def load_image(fn):
+  try:
+    image = Image.open(fn)
+    width, height = image.size
+    return image, width, height
+  except:
+    return None, 0, 0
+
-- 
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