tool: add bluetooth_psm.py to scrape PSM identifiers from SIG

src/bluetooth_psm.h

@@ -0,0 +1,30 @@
+
+/**
+ * bluetooth_psm.h generated from Bluetooth SIG website for BTstack by tool/bluetooth_psm.py
+ * 2019-09-26 22:33:48.712449
+ */
+
+#ifndef BLUETOOTH_PSM_H
+#define BLUETOOTH_PSM_H
+
+/**
+ * Assigned numbers from www.bluetooth.com/specifications/assigned-numbers/logical-link-control/
+ */
+#define BLUETOOTH_PSM_SDP                                                                0x0001
+#define BLUETOOTH_PSM_RFCOMM                                                             0x0003
+#define BLUETOOTH_PSM_TCS_BIN                                                            0x0005
+#define BLUETOOTH_PSM_TCS_BIN_CORDLESS                                                   0x0007
+#define BLUETOOTH_PSM_BNEP                                                               0x000F
+#define BLUETOOTH_PSM_HID_CONTROL                                                        0x0011
+#define BLUETOOTH_PSM_HID_INTERRUPT                                                      0x0013
+#define BLUETOOTH_PSM_UPNP                                                               0x0015
+#define BLUETOOTH_PSM_AVCTP                                                              0x0017
+#define BLUETOOTH_PSM_AVDTP                                                              0x0019
+#define BLUETOOTH_PSM_AVCTP_BROWSING                                                     0x001B
+#define BLUETOOTH_PSM_UDI_C_PLANE                                                        0x001D
+#define BLUETOOTH_PSM_ATT                                                                0x001F
+#define BLUETOOTH_PSM_3DSP                                                               0x0021
+#define BLUETOOTH_PSM_LE_PSM_IPSP                                                        0x0023
+#define BLUETOOTH_PSM_OTS                                                                0x0025
+
+#endif

tool/bluetooth_psm.py

@@ -0,0 +1,96 @@
+#!/usr/bin/env python
+#
+# Scrape GATT UUIDs from Bluetooth SIG page
+# https://www.bluetooth.com/specifications/assigned-numbers/logical-link-control/
+#
+# Copyright 2019 BlueKitchen GmbH
+#
+
+from lxml import html
+import datetime
+import requests
+import sys
+import codecs
+import os
+import re
+
+headers = {'user-agent': 'curl/7.63.0'}
+
+program_info = '''
+BTstack PSM Scraper
+Copyright 2019, BlueKitchen GmbH
+'''
+
+header = '''
+/**
+ * bluetooth_psm.h generated from Bluetooth SIG website for BTstack by tool/bluetooth_psm.py
+ * {datetime}
+ */
+
+#ifndef BLUETOOTH_PSM_H
+#define BLUETOOTH_PSM_H
+'''
+
+page_info = '''
+/**
+ * Assigned numbers from {page}
+ */
+'''
+
+trailer = '''
+#endif
+'''
+
+tags = []
+
+def strip_non_ascii(string):
+    stripped = (c for c in string if 0 < ord(c) < 127)
+    return ''.join(stripped)
+
+def create_name(psm):
+    # limit to ascii
+    psm = strip_non_ascii(psm)
+    # remove parts in braces
+    p = re.compile('\(.*\)')
+    tag = p.sub('',psm).rstrip().upper()
+    tag = tag.replace('-', '_')
+    return "BLUETOOTH_PSM_" + tag
+
+def scrape_page(fout, url):
+    global headers
+
+    print("Parsing %s" % url)    
+    fout.write(page_info.format(page=url.replace('https://','')))
+
+    # get from web
+    r = requests.get(url, headers=headers)
+    content = r.text
+
+    # test: fetch from local file 'index.html'
+    # f = codecs.open("index.html", "r", "utf-8")
+    # content = f.read();
+
+    tree = html.fromstring(content)
+    rows = tree.xpath('//table/tbody/tr')
+    for row in rows:
+        children = row.getchildren()
+        psm      = children[0].text_content()
+
+        # abort when second table starts
+        if (psm == '0x0000-0xFFFF'):
+            break
+
+        id_hex   = children[1].text_content().replace(u'\u200b','')
+        fout.write("#define %-80s %s\n" %  (create_name(psm), id_hex))
+
+btstack_root = os.path.abspath(os.path.dirname(sys.argv[0]) + '/..')
+gen_path = btstack_root + '/src/bluetooth_psm.h'
+
+print(program_info)
+
+with open(gen_path, 'wt') as fout:
+    fout.write(header.format(datetime=str(datetime.datetime.now())))
+    scrape_page(fout, 'https://www.bluetooth.com/specifications/assigned-numbers/logical-link-control/')
+    fout.write(trailer)
+
+print('Scraping successful!\n')