[latex] Fix plugin, cleanup code

latex/util.py

@@ -0,0 +1,115 @@
+# This file is part of Gajim.
+#
+# Gajim 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; version 3 only.
+#
+# Gajim 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 Gajim. If not, see <http://www.gnu.org/licenses/>.
+
+import logging
+import os
+from subprocess import Popen
+from subprocess import PIPE
+
+from gajim.plugins.plugins_i18n import _
+
+log = logging.getLogger('gajim.p.latex')
+
+BLACKLIST = [
+    '\def',
+    '\\let',
+    '\\futurelet',
+    '\\newcommand',
+    '\\renewcomment',
+    '\\else',
+    '\\fi',
+    '\\write',
+    '\\input',
+    '\\include',
+    '\\chardef',
+    '\\catcode',
+    '\\makeatletter',
+    '\\noexpand',
+    '\\toksdef',
+    '\\every',
+    '\\errhelp',
+    '\\errorstopmode',
+    '\\scrollmode',
+    '\\nonstopmode',
+    '\\batchmode',
+    '\\read',
+    '\\csname',
+    '\\newhelp',
+    '\\relax',
+    '\\afterground',
+    '\\afterassignment',
+    '\\expandafter',
+    '\\noexpand',
+    '\\special',
+    '\\command',
+    '\\loop',
+    '\\repeat',
+    '\\toks',
+    '\\output',
+    '\\line',
+    '\\mathcode',
+    '\\name',
+    '\\item',
+    '\\section',
+    '\\mbox',
+    '\\DeclareRobustCommand',
+    '\\[',
+    '\\]',
+]
+
+
+def try_run(argv, directory):
+    try:
+        proc = popen_nt_friendly(argv, directory)
+        out = proc.communicate()[0]
+        log.info(out)
+        return proc.wait()
+    except Exception as err:
+        return _('Error executing "%(command)s": %(error)s') % {
+            'command': " ".join(argv),
+            'error': str(err)}
+
+
+def popen_nt_friendly(command, directory):
+    if os.name == 'nt':
+        # CREATE_NO_WINDOW
+        return Popen(command, creationflags=0x08000000, cwd=directory,
+                     stdout=PIPE)
+    return Popen(command, cwd=directory, stdout=PIPE)
+
+
+def write_latex(filename, string):
+    texstr = _get_latex_template(string)
+
+    file_ = open(filename, 'w+')
+    file_.write(texstr)
+    file_.flush()
+    file_.close()
+
+
+def _get_latex_template(code):
+    template = '''
+        \\documentclass[12pt]{article}
+        \\usepackage[dvips]{graphicx}
+        \\usepackage{amsmath}
+        \\usepackage{amssymb}
+        \\pagestyle{empty}
+        \\begin{document}
+        \\begin{large}
+        \\begin{gather*}
+        %s
+        \\end{gather*}
+        \\end{large}
+        \\end{document}''' % (code)
+    return template