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-rw-r--r--meta/lib/oe/terminal.py101
1 files changed, 101 insertions, 0 deletions
diff --git a/meta/lib/oe/terminal.py b/meta/lib/oe/terminal.py
new file mode 100644
index 0000000000..3767935586
--- /dev/null
+++ b/meta/lib/oe/terminal.py
@@ -0,0 +1,101 @@
1import logging
2import os
3import oe.classutils
4import shlex
5from bb.process import Popen, ExecutionError
6
7logger = logging.getLogger('BitBake.OE.Terminal')
8
9
10class UnsupportedTerminal(StandardError):
11 pass
12
13class NoSupportedTerminals(StandardError):
14 pass
15
16
17class Registry(oe.classutils.ClassRegistry):
18 command = None
19
20 def __init__(cls, name, bases, attrs):
21 super(Registry, cls).__init__(name.lower(), bases, attrs)
22
23 @property
24 def implemented(cls):
25 return bool(cls.command)
26
27
28class Terminal(Popen):
29 __metaclass__ = Registry
30
31 def __init__(self, command, title=None, env=None):
32 self.format_command(command, title)
33
34 try:
35 Popen.__init__(self, self.command, env=env)
36 except OSError as exc:
37 import errno
38 if exc.errno == errno.ENOENT:
39 raise UnsupportedTerminal(self.name)
40 else:
41 raise
42
43 def format_command(self, command, title):
44 fmt = {'title': title or 'Terminal', 'command': command}
45 if isinstance(self.command, basestring):
46 self.command = shlex.split(self.command.format(**fmt))
47 else:
48 self.command = [element.format(**fmt) for element in self.command]
49
50class XTerminal(Terminal):
51 def __init__(self, command, title=None, env=None):
52 Terminal.__init__(self, command, title, env)
53 if not os.environ.get('DISPLAY'):
54 raise UnsupportedTerminal(self.name)
55
56class Gnome(XTerminal):
57 command = 'gnome-terminal --disable-factory -t "{title}" -x {command}'
58 priority = 2
59
60class Konsole(XTerminal):
61 command = 'konsole -T "{title}" -e {command}'
62 priority = 2
63
64class XTerm(XTerminal):
65 command = 'xterm -T "{title}" -e {command}'
66 priority = 1
67
68class Rxvt(XTerminal):
69 command = 'rxvt -T "{title}" -e {command}'
70 priority = 1
71
72class Screen(Terminal):
73 command = 'screen -D -m -t "{title}" {command}'
74
75
76def prioritized():
77 return Registry.prioritized()
78
79def spawn_preferred(command, title=None, env=None):
80 """Spawn the first supported terminal, by priority"""
81 for terminal in prioritized():
82 try:
83 spawn(terminal.name, command, title, env)
84 break
85 except UnsupportedTerminal:
86 continue
87 else:
88 raise NoSupportedTerminals()
89
90def spawn(name, command, title=None, env=None):
91 """Spawn the specified terminal, by name"""
92 logger.debug(1, 'Attempting to spawn terminal "%s"', name)
93 try:
94 terminal = Registry.registry[name]
95 except KeyError:
96 raise UnsupportedTerminal(name)
97
98 pipe = terminal(command, title, env)
99 output = pipe.communicate()[0]
100 if pipe.returncode != 0:
101 raise ExecutionError(pipe.command, pipe.returncode, output)