1 #!/usr/bin/env python
3 """
4 uniconv_output.py
5 Module for running UniConverter exporting commands in Inkscape extensions
7 Copyright (C) 2009 Nicolas Dufour (jazzynico)
8 Based on unicon-ext.py and run_command.py by Stephen Silver
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
23 """
25 # Run a command that generates an UniConvertor export file from a SVG file.
26 # On success, outputs the contents of the UniConverter convertion to stdout,
27 # and exits with a return code of 0.
28 # On failure, outputs an error message to stderr, and exits with a return
29 # code of 1.
31 import os
32 import sys
33 import tempfile
34 import gettext
35 _ = gettext.gettext
37 def run(command_format, prog_name, uniconv_format):
38 outfile = tempfile.mktemp(uniconv_format)
39 command = command_format + outfile
40 msg = None
41 # In order to get a return code from the process, we use subprocess.Popen
42 # if it's available (Python 2.4 onwards) and otherwise use popen2.Popen3
43 # (Unix only). As the Inkscape package for Windows includes Python 2.5,
44 # this should cover all supported platforms.
45 try:
46 try:
47 from subprocess import Popen, PIPE
48 p = Popen(command, shell=True, stdout=PIPE, stderr=PIPE)
49 rc = p.wait()
50 out = p.stdout.read()
51 err = p.stderr.read()
52 except ImportError:
53 try:
54 from popen2 import Popen3
55 p = Popen3(command, True)
56 p.wait()
57 rc = p.poll()
58 out = p.fromchild.read()
59 err = p.childerr.read()
60 except ImportError:
61 # shouldn't happen...
62 msg = "Neither subprocess.Popen nor popen2.Popen3 is available"
63 if rc and msg is None:
64 msg = "%s failed:\n%s\n%s\n" % (prog_name, out, err)
65 except Exception, inst:
66 msg = "Error attempting to run %s: %s" % (prog_name, str(inst))
68 # If successful, copy the output file to stdout.
69 if msg is None:
70 if os.name == 'nt': # make stdout work in binary on Windows
71 import msvcrt
72 msvcrt.setmode(sys.stdout.fileno(), os.O_BINARY)
73 try:
74 f = open(outfile, "rb")
75 data = f.read()
76 sys.stdout.write(data)
77 f.close()
78 except IOError, inst:
79 msg = "Error reading temporary file: %s" % str(inst)
81 # Clean up.
82 try:
83 os.remove(outfile)
84 except Exception:
85 pass
87 # Ouput error message (if any) and exit.
88 if msg is not None:
89 sys.stderr.write(msg + "\n")
90 sys.exit(1)
91 else:
92 sys.exit(0)
94 def get_command():
95 cmd = None
97 try:
98 from subprocess import Popen, PIPE
99 p = Popen('uniconvertor', shell=True, stdout=PIPE, stderr=PIPE).wait()
100 if p==0 :
101 cmd = 'uniconvertor'
102 else:
103 p = Popen('uniconv', shell=True, stdout=PIPE, stderr=PIPE).wait()
104 if p==0 :
105 cmd = 'uniconv'
106 except ImportError:
107 from popen2 import Popen3
108 p = Popen3('uniconv', True).wait()
109 if p!=32512 : cmd = 'uniconv'
110 p = Popen3('uniconvertor', True).wait()
111 if p!=32512 : cmd = 'uniconvertor'
113 if cmd == None:
114 # there's no succeffully-returning uniconv command; try to get the module directly (on Windows)
115 try:
116 # cannot simply import uniconvertor, it aborts if you import it without parameters
117 import imp
118 imp.find_module("uniconvertor")
119 except ImportError:
120 sys.stderr.write(_('You need to install the UniConvertor software.\n'+\
121 'For GNU/Linux: install the package python-uniconvertor.\n'+\
122 'For Windows: download it from\n'+\
123 'http://sk1project.org/modules.php?name=Products&product=uniconvertor\n'+\
124 'and install into your Inkscape\'s Python location\n'))
125 sys.exit(1)
126 cmd = 'python -c "from uniconvertor import uniconv; uniconv();"'
128 return cmd
130 # vim: expandtab shiftwidth=4 tabstop=8 softtabstop=4 encoding=utf-8 textwidth=99