New command: tmuxp ls (#616)

Thank you @pythops !

Author: tony

tests/test_cli.py

@@ -13,7 +13,13 @@
 import libtmux
 from libtmux.common import has_lt_version
 from tmuxp import cli, config
-from tmuxp.cli import get_config_dir, is_pure_name, load_workspace, scan_config
+from tmuxp.cli import (
+    command_ls,
+    get_config_dir,
+    is_pure_name,
+    load_workspace,
+    scan_config,
+)
 
 from .fixtures._util import curjoin, loadfixture
 
@@ -574,3 +580,33 @@ def check_cmd(config_arg):
         assert str(user_config) in check_cmd(str(configdir.join('myconfig.yaml')))
 
         assert 'file not found' in check_cmd('.tmuxp.json')
+
+
+def test_ls_cli(monkeypatch, tmpdir):
+    monkeypatch.setenv("HOME", str(tmpdir))
+
+    filenames = [
+        '.git/',
+        '.gitignore/',
+        'session_1.yaml',
+        'session_2.yaml',
+        'session_3.json',
+        'session_4.txt',
+    ]
+
+    # should ignore:
+    # - directories should be ignored
+    # - extensions not covered in VALID_CONFIG_DIR_FILE_EXTENSIONS
+    ignored_filenames = ['.git/', '.gitignore/', 'session_4.txt']
+    stems = [os.path.splitext(f)[0] for f in filenames if f not in ignored_filenames]
+
+    for filename in filenames:
+        location = tmpdir.join('.tmuxp/{}'.format(filename))
+        if filename.endswith('/'):
+            location.ensure_dir()
+        else:
+            location.ensure()
+
+    runner = CliRunner()
+    cli_output = runner.invoke(command_ls).output
+    assert cli_output == '\n'.join(stems) + '\n'

tmuxp/cli.py

@@ -26,6 +26,8 @@
 
 logger = logging.getLogger(__name__)
 
+VALID_CONFIG_DIR_FILE_EXTENSIONS = ['.yaml', '.yml', '.json']
+
 
 def get_cwd():
     return os.getcwd()
@@ -326,7 +328,7 @@ def scan_config(config, config_dir=None):
                 x
                 for x in [
                     '%s%s' % (join(config_dir, config), ext)
-                    for ext in ['.yaml', '.yml', '.json']
+                    for ext in VALID_CONFIG_DIR_FILE_EXTENSIONS
                 ]
                 if exists(x)
             ]
@@ -924,3 +926,16 @@ def command_convert(config):
                 buf.write(newconfig)
                 buf.close()
                 print('New config saved to <%s>.' % newfile)
+
+
+@cli.command(
+    name='ls', short_help='List configured sessions in {}.'.format(get_config_dir())
+)
+def command_ls():
+    tmuxp_dir = get_config_dir()
+    if os.path.exists(tmuxp_dir) and os.path.isdir(tmuxp_dir):
+        for f in sorted(os.listdir(tmuxp_dir)):
+            stem, ext = os.path.splitext(f)
+            if os.path.isdir(f) or ext not in VALID_CONFIG_DIR_FILE_EXTENSIONS:
+                continue
+            print(stem)