1 files changed, 50 insertions, 0 deletions
diff --git a/scripts/download_redis_commands.py b/scripts/download_redis_commands.py
new file mode 100755
index 0000000..4dda6b8
--- /dev/null
+++ b/scripts/download_redis_commands.py
@@ -0,0 +1,50 @@
+#!python3
+
+"""
+Download all Reids commands from https://redis.io/commands.
+Output to csv format.
+"""
+import sys
+import csv
+
+from lxml import etree
+import requests
+
+stdout_writer = csv.writer(sys.stdout)
+
+
+def eprint(*args, **kwargs):
+    print(*args, file=sys.stderr, **kwargs)
+
+
+eprint("Download https://redis.io/commands page...")
+page = requests.get("https://redis.io/commands").text
+eprint("Download finished!")
+
+eprint("Start prase page...")
+html = etree.HTML(page)
+commands = html.xpath("//div[@class='container']/ul/li")
+stdout_writer.writerow(["Group", "Command", "Args", "Summary", "Redis.io link"])
+command_rows = []
+# parse page
+for command in commands:
+    group = command.attrib["data-group"]
+    command_name = command.xpath("./a/span[@class='command']/text()")[0].strip()
+    command_args = command.xpath(
+        "./a/span[@class='command']/span[@class='args']/text()"
+    )[0].strip()
+    command_summary = command.xpath("./a/span[@class='summary']/text()")[0].strip()
+    command_link = "https://redis.io" + command.xpath("./a/@href")[0].strip()
+    command_rows.append(
+        [
+            group,
+            command_name,
+            " ".join(command_args.split()),
+            command_summary,
+            command_link,
+        ]
+    )
+# write to stdout
+for row in sorted(command_rows):
+    stdout_writer.writerow(row)
+eprint("Down.")