Raw recording mode

README.md

@@ -123,6 +123,7 @@ Available options:
 
 * `--stdin` - Enable stdin (keyboard) recording (see below)
 * `--append` - Append to existing recording
+* `--raw` - Save raw STDOUT output, without timing information or other metadata
 * `-c, --command=<command>` - Specify command to record, defaults to $SHELL
 * `-t, --title=<title>` - Specify the title of the asciicast
 * `-i, --idle-time-limit=<sec>` - Limit recorded terminal inactivity to max `<sec>` seconds

asciinema/__main__.py

@@ -80,6 +80,7 @@ For help on a specific command run:
     parser_rec = subparsers.add_parser('rec', help='Record terminal session')
     parser_rec.add_argument('--stdin', help='enable stdin recording, disabled by default', action='store_true', default=cfg.record_stdin)
     parser_rec.add_argument('--append', help='append to existing recording', action='store_true', default=False)
+    parser_rec.add_argument('--raw', help='save only raw stdout output', action='store_true', default=False)
     parser_rec.add_argument('-c', '--command', help='command to record, defaults to $SHELL', default=cfg.record_command)
     parser_rec.add_argument('-e', '--env', help='list of environment variables to capture, defaults to ' + config.DEFAULT_RECORD_ENV, default=cfg.record_env)
     parser_rec.add_argument('-t', '--title', help='title of the asciicast')

asciinema/asciicast/raw.py

@@ -0,0 +1,49 @@
+import os
+from multiprocessing import Process, Queue
+
+from asciinema.pty_recorder import PtyRecorder
+
+
+def write_bytes_from_queue(path, mode, queue):
+    with open(path, mode=mode+'b', buffering=0) as f:
+        for data in iter(queue.get, None):
+            f.write(data)
+
+
+class writer():
+
+    def __init__(self, path, append):
+        self.path = path
+        self.mode = 'a' if append else 'w'
+        self.queue = Queue()
+
+    def __enter__(self):
+        self.process = Process(
+            target=write_bytes_from_queue,
+            args=(self.path, self.mode, self.queue)
+        )
+        self.process.start()
+        return self
+
+    def __exit__(self, exc_type, exc_value, exc_traceback):
+        self.queue.put(None)
+        self.process.join()
+
+    def write_stdin(self, data):
+        pass
+
+    def write_stdout(self, data):
+        self.queue.put(data)
+
+
+class Recorder:
+
+    def __init__(self, pty_recorder=None):
+        self.pty_recorder = pty_recorder if pty_recorder is not None else PtyRecorder()
+
+    def record(self, path, append, command, command_env, _captured_env, _rec_stdin, _title, _idle_time_limit):
+        if os.path.exists(path) and os.stat(path).st_size == 0: # true for pipes
+            append = False
+
+        with writer(path, append) as w:
+            self.pty_recorder.record_command(['sh', '-c', command], w, command_env)

asciinema/commands/record.py

@@ -5,12 +5,13 @@ import tempfile
 from asciinema.commands.command import Command
 import asciinema.asciicast as asciicast
 import asciinema.asciicast.v2 as v2
+import asciinema.asciicast.raw as raw
 from asciinema.api import APIError
 
 
 class RecordCommand(Command):
 
-    def __init__(self, api, args, env=None, recorder=None):
+    def __init__(self, api, args, env=None):
         Command.__init__(self, args.quiet)
         self.api = api
         self.filename = args.filename
@@ -21,7 +22,8 @@ class RecordCommand(Command):
         self.assume_yes = args.yes or args.quiet
         self.idle_time_limit = args.idle_time_limit
         self.append = args.append
-        self.recorder = recorder if recorder is not None else v2.Recorder()
+        self.raw = args.raw
+        self.recorder = raw.Recorder() if args.raw else v2.Recorder()
         self.env = env if env is not None else os.environ
 
     def execute(self):
@@ -29,6 +31,10 @@ class RecordCommand(Command):
         append = self.append
 
         if self.filename == "":
+            if self.raw:
+                self.print_error("Filename required when recording in raw mode.")
+                return 1
+            else:
                 self.filename = _tmp_path()
                 upload = True
 

tests/integration.sh

@@ -49,3 +49,5 @@ bash -c "sleep 1; pkill -9 -n -f 'bash -c echo t3st'" &
 asciinema rec -c 'bash -c "echo t3st; sleep 2; echo ok"' "$TMP_DATA_DIR/4.cast"
 
 asciinema rec --stdin -c 'bash -c "echo t3st; sleep 1; echo ok"' "$TMP_DATA_DIR/5.cast"
+
+asciinema rec --raw -c 'bash -c "echo t3st; sleep 1; echo ok"' "$TMP_DATA_DIR/6.raw"