lyx_mirror/lib/scripts/convertDefault.py

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# -*- coding: utf-8 -*-
# file convertDefault.py
# This file is part of LyX, the document processor.
# Licence details can be found in the file COPYING.
# \author Herbert Voß
# \author Bo Peng
# Full author contact details are available in file CREDITS.
# The default converter if no other has been defined by the user from the
# Conversion->Converter tab of the Preferences dialog.
# The user can also redefine this default converter, placing their
# replacement in ~/.lyx/scripts
# converts an image $2 (format $1) to $4 (format $3)
from __future__ import print_function
import os, re, sys
PY2 = sys.version_info[0] == 2
# We may need some extra options only supported by recent convert versions
re_version = re.compile(r'^Version:.*ImageMagick\s*(\d*)\.(\d*)\.(\d*).*$')
# imagemagick 7
command = 'magick'
fout = os.popen('magick -version 2>&1')
output = fout.readline()
if fout.close() != None:
# older versions
# caution: windows has a convert.exe for converting file systems
command = 'convert'
fout = os.popen('convert -version 2>&1')
output = fout.readline()
fout.close()
if not PY2:
# Ensure we have a (unicode) string object in Python3
# (not required for version >= 3.5).
# FIXME: Check whether this is required with any supported 3.x version!
output = str(output)
version = re_version.match(output)
# Imagemagick by default
im = False
gm = False
if version != None:
major = int(version.group(1))
minor = int(version.group(2))
patch = int(version.group(3))
version = hex(major * 65536 + minor * 256 + patch)
im = True
else:
# Try GraphicsMagick
re_version = re.compile(r'^GraphicsMagick.*http:..www.GraphicsMagick.org.*$')
version = re_version.match(output)
if version != None:
gm = True
# IM >= 5.5.8 separates options for source and target files
# See http://www.imagemagick.org/Usage/basics/#why
if im or gm:
sopts = "-depth 8"
topts = ""
elif sys.platform == 'darwin':
command = 'lyxconvert'
# If supported, add the -define option for pdf source formats
if sys.argv[1] == 'pdf' and (version >= 0x060206 or gm):
sopts = '-define pdf:use-cropbox=true ' + sopts
# If supported, add the -flatten option for ppm target formats (see bug 4749)
if sys.argv[3] == 'ppm' and (im and version >= 0x060305 or gm):
topts = '-flatten'
# print (command, sys.argv[2], sys.argv[4], file= sys.stdout)
if (im or gm) and os.system(r'%s %s "%s" %s "%s"' % (command, sopts, sys.argv[2], topts, sys.argv[3] + ':' + sys.argv[4])) != 0:
print (sys.argv[0], 'ERROR', file= sys.stderr)
print ('Execution of "%s" failed.' % command, file= sys.stderr)
sys.exit(1)
elif not im and not gm and sys.platform == 'darwin' and os.system(r'%s "%s" "%s"' % (command, sys.argv[2], sys.argv[4])) != 0:
print (sys.argv[0], 'ERROR', file= sys.stderr)
print ('Execution of "%s" failed.' % command, file= sys.stderr)
sys.exit(1)