1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
# -*- coding: utf-8 -*-
# Gedit External Tools plugin
# Copyright (C) 2005-2006 Steve Frécinaux <steve@istique.net>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
__all__ = ('Capture', )
import os, sys, signal
import locale
import subprocess
import gobject
import fcntl
import glib
class Capture(gobject.GObject):
CAPTURE_STDOUT = 0x01
CAPTURE_STDERR = 0x02
CAPTURE_BOTH = 0x03
CAPTURE_NEEDS_SHELL = 0x04
WRITE_BUFFER_SIZE = 0x4000
__gsignals__ = {
'stdout-line' : (gobject.SIGNAL_RUN_LAST, gobject.TYPE_NONE, (gobject.TYPE_STRING,)),
'stderr-line' : (gobject.SIGNAL_RUN_LAST, gobject.TYPE_NONE, (gobject.TYPE_STRING,)),
'begin-execute': (gobject.SIGNAL_RUN_LAST, gobject.TYPE_NONE, tuple()),
'end-execute' : (gobject.SIGNAL_RUN_LAST, gobject.TYPE_NONE, (gobject.TYPE_INT,))
}
def __init__(self, command, cwd = None, env = {}):
gobject.GObject.__init__(self)
self.pipe = None
self.env = env
self.cwd = cwd
self.flags = self.CAPTURE_BOTH | self.CAPTURE_NEEDS_SHELL
self.command = command
self.input_text = None
def set_env(self, **values):
self.env.update(**values)
def set_command(self, command):
self.command = command
def set_flags(self, flags):
self.flags = flags
def set_input(self, text):
self.input_text = text
def set_cwd(self, cwd):
self.cwd = cwd
def execute(self):
if self.command is None:
return
# Initialize pipe
popen_args = {
'cwd' : self.cwd,
'shell': self.flags & self.CAPTURE_NEEDS_SHELL,
'env' : self.env
}
if self.input_text is not None:
popen_args['stdin'] = subprocess.PIPE
if self.flags & self.CAPTURE_STDOUT:
popen_args['stdout'] = subprocess.PIPE
if self.flags & self.CAPTURE_STDERR:
popen_args['stderr'] = subprocess.PIPE
self.tried_killing = False
self.idle_write_id = 0
self.read_buffer = ''
try:
self.pipe = subprocess.Popen(self.command, **popen_args)
except OSError, e:
self.pipe = None
self.emit('stderr-line', _('Could not execute command: %s') % (e, ))
return
# Signal
self.emit('begin-execute')
if self.flags & self.CAPTURE_STDOUT:
# Set non blocking
flags = fcntl.fcntl(self.pipe.stdout.fileno(), fcntl.F_GETFL) | os.O_NONBLOCK
fcntl.fcntl(self.pipe.stdout.fileno(), fcntl.F_SETFL, flags)
gobject.io_add_watch(self.pipe.stdout,
gobject.IO_IN | gobject.IO_HUP,
self.on_output)
if self.flags & self.CAPTURE_STDERR:
# Set non blocking
flags = fcntl.fcntl(self.pipe.stderr.fileno(), fcntl.F_GETFL) | os.O_NONBLOCK
fcntl.fcntl(self.pipe.stderr.fileno(), fcntl.F_SETFL, flags)
gobject.io_add_watch(self.pipe.stderr,
gobject.IO_IN | gobject.IO_HUP,
self.on_output)
# IO
if self.input_text is not None:
# Write async, in chunks of something
self.write_buffer = str(self.input_text)
if self.idle_write_chunk():
self.idle_write_id = gobject.idle_add(self.idle_write_chunk)
# Wait for the process to complete
gobject.child_watch_add(self.pipe.pid, self.on_child_end)
def idle_write_chunk(self):
if not self.pipe:
self.idle_write_id = 0
return False
try:
l = len(self.write_buffer)
m = min(l, self.WRITE_BUFFER_SIZE)
self.pipe.stdin.write(self.write_buffer[:m])
if m == l:
self.write_buffer = ''
self.pipe.stdin.close()
self.idle_write_id = 0
return False
else:
self.write_buffer = self.write_buffer[m:]
return True
except IOError:
self.pipe.stdin.close()
self.idle_write_id = 0
return False
def on_output(self, source, condition):
if condition & (glib.IO_IN | glib.IO_PRI):
line = source.read()
if len(line) > 0:
try:
line = unicode(line, 'utf-8')
except:
line = unicode(line,
locale.getdefaultlocale()[1],
'replace')
self.read_buffer += line
lines = self.read_buffer.splitlines(True)
if not lines[-1].endswith("\n"):
self.read_buffer = lines[-1]
lines = lines[0:-1]
else:
self.read_buffer = ''
for line in lines:
if not self.pipe or source == self.pipe.stdout:
self.emit('stdout-line', line)
else:
self.emit('stderr-line', line)
if condition & ~(glib.IO_IN | glib.IO_PRI):
if self.read_buffer:
if source == self.pipe.stdout:
self.emit('stdout-line', self.read_buffer)
else:
self.emit('stderr-line', self.read_buffer)
self.read_buffer = ''
self.pipe = None
return False
else:
return True
def stop(self, error_code = -1):
if self.pipe is not None:
if self.idle_write_id:
gobject.source_remove(self.idle_write_id)
self.idle_write_id = 0
if not self.tried_killing:
os.kill(self.pipe.pid, signal.SIGTERM)
self.tried_killing = True
else:
os.kill(self.pipe.pid, signal.SIGKILL)
def on_child_end(self, pid, error_code):
# In an idle, so it is emitted after all the std*-line signals
# have been intercepted
gobject.idle_add(self.emit, 'end-execute', error_code)
# ex:ts=4:et:
|
