implemented deck.http

README.md

@@ -105,7 +105,9 @@ Various hardware information. May be expanded in the future.
 Exports the following functions:
 
 - `board_id()`: get the board ID (e.g. `lilygo_tdeck` for T-Deck/T-Deck Plus), or `emulated` if it's not run on a CircuitPython device
-- `battery_v()`: (T-Deck-specific) get the current battery voltage
+- `battery_v()`: (T-Deck-specific) get the current battery voltage (or 0 if running in an emulated environment)
+
+Also, this module exposes the `REAL_HW` variable to detect whether the code is running on a real hardware in the CircuitPython environment.
 
 ### `deck.net`
 
@@ -138,6 +140,16 @@ except:
   import requests
 ```
 
+### `deck.http`
+
+High-level HTTP client library.
+
+Exports the following functions:
+
+- `http_set_ua(ua_str='Mozilla/5.0')`: set a default HTTP user agent string
+- `http_fetch(url, useragent=None, hdrs={})`: fetch text content from a URL into a string (returns `(status_code, content)` tuple)
+- `wget(url, filename='', useragent=None, hdrs={})`: download a file into a local path (returns `(status_code, filename)` tuple)
+
 ### `deck.llm`
 
 A helper library for interaction with remote LLM (large language model) endpoints that expose OpenAI-compatible API. As of now, it only exports a single class, `LLMChat`, to encapsulate all the interaction.
@@ -254,7 +266,7 @@ You can start it with `from tdeckboot import *` to give it the same extended cap
 The foundational module set is going to at least include high-level capabilities for:
 
 - exposing low-level socket and HTTP APIs (done),
-- high-level HTTP APIs,
+- high-level HTTP APIs (partially done),
 - high-level LLM APIs (partially done),
 - date and time informaion (done),
 - file system manipulation (done),

deck/http.py

@@ -0,0 +1,49 @@
+# High-level HTTP protocol interaction
+# Created by Luxferre in 2025, released into public domain
+
+# init requests library in a platform-agnostic way
+requests = None
+try:
+  from deck import net
+  status, stext, myip = net.wifi_connect_wait()
+  if status:
+    requests = net.init_requests()
+except:
+  import requests
+
+DEFAULT_UA = 'Mozilla/5.0'
+def http_set_ua(ua_str='Mozilla/5.0'):
+  """Set a default user agent"""
+  global DEFAULT_UA
+  DEFAULT_UA = ua_str
+
+def http_fetch(url, useragent=None, hdrs={}):
+  """Fetch text content from URL"""
+  if useragent is None:
+    useragent = DEFAULT_UA
+  hdrs['User-Agent'] = useragent
+  try:
+    r = requests.get(url, headers=hdrs)
+    return (r.status_code, r.text)
+  except:
+    return (404, '')
+
+def wget(url, filename='', useragent=None, hdrs={}):
+  """Download a file"""
+  if filename == '':
+    filename = url.split('/')[-1]
+  if useragent is None:
+    useragent = DEFAULT_UA
+  hdrs['User-Agent'] = useragent
+  r = requests.get(url, stream=True, headers=hdrs)
+  if r.status_code >= 200 and r.status_code < 400:
+    with open(filename, 'wb') as f:
+      try:
+        for chunk in r.iter_content(chunk_size=8192):
+          f.write(chunk)
+      except AttributeError:
+        f.write(r.content)
+  else: filename = ''
+  return (r.status_code, filename)
+  
+

tdeckboot.py

@@ -8,7 +8,8 @@ from deck.fs import du, df, sep, pwd, ls, md, cd, rd, rm, mv, cp, sync
 from deck.input import input, input_multi
 from deck.pager import print_paged, term_size
 from deck.time import *
-from deck.hwinfo import board_id, battery_v 
+from deck.hwinfo import board_id, battery_v, REAL_HW
+from deck.http import wget, http_fetch, http_set_ua
 from app.ed import edit, view
 try:
   from deck import net