From 69c220cda3d8c0a95327630f5752dad36cb82261 Mon Sep 17 00:00:00 2001
From: Yves Fischer <yvesf-git@xapek.org>
Date: Tue, 17 Jul 2018 12:34:04 +0200
Subject: Squashed commit

---
 jobs/esg.py | 88 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 88 insertions(+)
 create mode 100755 jobs/esg.py

(limited to 'jobs/esg.py')

diff --git a/jobs/esg.py b/jobs/esg.py
new file mode 100755
index 0000000..a2bb025
--- /dev/null
+++ b/jobs/esg.py
@@ -0,0 +1,88 @@
+import codecs
+import logging
+import urllib.parse
+import urllib.request
+from enum import Enum
+from html.parser import HTMLParser
+
+
+class Product:
+    def __init__(self):
+        self.price = ""
+        self.name = ""
+        self.sku = None
+
+    def __repr__(self):
+        return "<{} name={} price={} sku={}>".format(
+            self.__class__, self.name, self.price, self.sku)
+
+
+State = Enum('State', 'parsing product product_name price idle')
+
+
+class Parser(HTMLParser):
+    def error(self, message):
+        logging.error("Parser error: %s", message)
+
+    def __init__(self):
+        super().__init__()
+        self.products = []
+        self.current = None
+        self.state = State.idle
+
+    def handle_starttag(self, tag, attrs):
+        attrs = dict(attrs)
+        if self.state == State.idle and tag == "tr" and "data-sku" in attrs:
+            self.current = Product()
+            self.current.sku = attrs["data-sku"]
+            self.state = State.parsing
+        elif self.state == State.parsing and tag == 'h3' and \
+                "class" in attrs and attrs['class'] == 'product-name':
+            self.state = State.product_name
+        elif self.state == State.parsing and tag == 'span' and \
+                "class" in attrs and attrs['class'] == "price":
+            self.state = State.price
+
+    def handle_endtag(self, tag):
+        if self.state == State.product_name and tag == 'a':
+            self.state = State.parsing
+        elif self.state == State.price and tag == 'span':
+            self.state = State.parsing
+
+        if self.current and self.current.name and \
+                self.current.price and self.current.sku:
+            self.current.name = self.current.name.strip()
+            price = self.current.price
+            price = price.replace(".", "").replace(",", ".").split("\xa0")[0]
+            self.current.price = float(price)
+            self.products += [self.current]
+            self.current = None
+            self.state = State.idle
+
+    def handle_data(self, data):
+        if self.state == State.product_name:
+            self.current.name += data
+        if self.state == State.price:
+            self.current.price += data
+
+
+URL = "http://www.edelmetall-handel.de/quickbuy/twozero/"
+
+
+def execute():
+    """Always fetches full catalog"""
+    request = urllib.request.Request(URL)
+    with urllib.request.urlopen(request) as f:
+        # with open("index.html", 'rb') as f:
+        f2 = codecs.getreader('utf-8')(f)
+        f2.errors = 'ignore'
+        parser = Parser()
+        for line in f2.readlines():
+            parser.feed(line)
+        return parser.products
+
+
+if __name__ == "__main__":
+    from pprint import pprint
+
+    pprint(execute())
-- 
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