pax_global_header 0000666 0000000 0000000 00000000064 14020722705 0014511 g ustar 00root root 0000000 0000000 52 comment=95def8ed58f21f18163f84e81278de8fe61954d8
python-ghostscript-0.7/ 0000775 0000000 0000000 00000000000 14020722705 0015247 5 ustar 00root root 0000000 0000000 python-ghostscript-0.7/.gitignore 0000664 0000000 0000000 00000001244 14020722705 0017240 0 ustar 00root root 0000000 0000000 # crazy-compiler standard excludes
/projectlogo.png
/docs/_build/
*.[1-9]
# editor artefacts
*~
.#*
\#*#
.*.swp
# build artefacts
/.sconf_temp
/.sconsign.*
/config.h
/config.log
/config.status
/autom4te*.cache
/options.cache
/stamp-h1
# C, C++ build artefacts
*.[oa]
*.l[oa]
*.al
.libs
.deps
*.so
*.so.[0-9]*
*.rej
*.dll
.idea
# Python build artefacts
/build/
/dist/
/_venv/
/pip-selfcheck.json
/pyvenv.cfg
*.py[cod]
*.egg
*.egg-info
*.egg-link
/nosetests.xml
/.coverage
/.tox
/.achievements
/.installed.cfg
/.ropeproject
/.cache
# Mr Developer
/.mr.developer.cfg
/.project
/.pydevproject
# OS generated files
*.DS_[sS]Store*
ehthumbs.db
Icon?
Thumbs.db
*.pid
._.**~
python-ghostscript-0.7/.gitlab-ci.yml 0000664 0000000 0000000 00000001125 14020722705 0017702 0 ustar 00root root 0000000 0000000 image: python
stages:
- test
- build
- release
before_script:
- apt-get update -qq && apt-get install -y -q ghostscript
- pip install -r requirements.txt
python36:
image: python:3.6
stage: test
script: tox -e py36
python37:
image: python:3.7
stage: test
script: tox -e py37
python38:
image: python:3.8
stage: test
script: tox -e py38
python39:
image: python:3.9
stage: test
script: tox -e py39
linters:
image: python:3.9
stage: test
script: tox -e linters
build:
stage: build
script: tox -e build
artifacts:
paths:
- dist/
expire_in: 1 week
python-ghostscript-0.7/CHANGES.txt 0000664 0000000 0000000 00000006042 14020722705 0017062 0 ustar 00root root 0000000 0000000 Changes
==================
0.7 (2021-03-06)
----------------
* BREAKING: ``Ghostscript()`` no longer allows passing arbitrary
keyword arguments.
* The high-level interface now allows passing unicode strings as
arguments. Passing bytes as arguments is still possible, but now
deprecated.
* The high-level interface now requires ghostscript >= 9.0.8 (released
2013-08-14).
* Allow multiple Ghostscript instances. Actually using this requires
the library is compiled with -DGS_THREADSAFE.
* Ensure proper clean-up on error.
* High-level revision() now returns unicode strings instead of byte
strings.
* Add low-level interface for set_arg_encoding().
* Miscellaneous small fixes.
* Drop support for Python 2.7, 3.4 and 3.5.
Minimum required Python version is now 3.6.
:0.6 (2018-01-16):
* Add support for Python 3.x (tested with Python 3.4).
Minimum required Python version is now 2.7.
* Add support for display callback and an example program
using it. Thanks to Lasse Fister.
* Add context-interface (for the ``with``-statement).
* ``GhostscriptError`` now has an attribute ``code`` holding
the numeric error-code.
* ``Ghostscript()`` now accepts keyword-arguments ``stdin``,
``stdout``, ``stderr`` for setting the respective stream. This was
already implementd in version 0.4.1, but not documented.
* Add unittest suite (using pytest).
* Several bug fixes and smaller changes.
* Switch version control to git and move project to gitlab. See
Readme-file for the new URL.
* Set up continuous integration tests.
:0.5 (skipped):
* v0.5 was skipped to avoid version conflicts with fork
`python3-ghostscript`. All changes of that fork are integrated
into v0.6.
:0.4.1 (2011-02-09):
* Fixed import module on Windows XP. Thanks to Akihiro Takizawa for
the patch.
:0.4 (2011-01-29):
* Fixed typo in function call name ctypes.util.find_library
* (Unix) No longer try to load a specific version (version 8) of
libgs.so
* Added low-level interface for set_stdio() plus wrappers for
file handles
* (win32) Improved search for best Ghostscript installation:
Consider Aladdin and GNU Ghostscript, too; Check for existence of
DLL found in registry; take highest version available.
* Added win32 example-batch file for testing and other
improvements/fixes on examples an documentation.
:0.3 (2010-08-12):
* Added support for win32: The DLL to load is searched in registry.
* On other platforms: Be more inteligent about finding Ghostscript
shared object file (fall back to ctypes.util.find_library() if
`libgs.8.so` can not be loaded
* Better error messages if lib/dll is not found.
* Removed relative imports, so older versions of Python can be used.
* Added nice project logo
:0.2 (2010-08-06):
* Fixed several bugs, esp. for running strings by Ghostscript.
:0.1 (2010-08-06):
* This is the first public release of the Python Ghostscript C-API
interface.
.. Emacs config:
Local Variables:
mode: rst
ispell-local-dictionary: "american"
End:
python-ghostscript-0.7/COPYING 0000664 0000000 0000000 00000104513 14020722705 0016306 0 ustar 00root root 0000000 0000000 GNU GENERAL PUBLIC LICENSE
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to collect a royalty for further conveying from those to whom you convey
the Program, the only way you could satisfy both those terms and this
License would be to refrain entirely from conveying the Program.
13. Use with the GNU Affero General Public License.
Notwithstanding any other provision of this License, you have
permission to link or combine any covered work with a work licensed
under version 3 of the GNU Affero General Public License into a single
combined work, and to convey the resulting work. The terms of this
License will continue to apply to the part which is the covered work,
but the special requirements of the GNU Affero General Public License,
section 13, concerning interaction through a network will apply to the
combination as such.
14. Revised Versions of this License.
The Free Software Foundation may publish revised and/or new versions of
the GNU General Public License from time to time. Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.
Each version is given a distinguishing version number. If the
Program specifies that a certain numbered version of the GNU General
Public License "or any later version" applies to it, you have the
option of following the terms and conditions either of that numbered
version or of any later version published by the Free Software
Foundation. If the Program does not specify a version number of the
GNU General Public License, you may choose any version ever published
by the Free Software Foundation.
If the Program specifies that a proxy can decide which future
versions of the GNU General Public License can be used, that proxy's
public statement of acceptance of a version permanently authorizes you
to choose that version for the Program.
Later license versions may give you additional or different
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author or copyright holder as a result of your choosing to follow a
later version.
15. Disclaimer of Warranty.
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
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THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
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above cannot be given local legal effect according to their terms,
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Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
Copyright (C)
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
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(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
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You should have received a copy of the GNU General Public License
along with this program. If not, see .
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
Copyright (C)
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
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might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
.
python-ghostscript-0.7/MANIFEST.in 0000664 0000000 0000000 00000000177 14020722705 0017012 0 ustar 00root root 0000000 0000000 include COPYING
include README.txt
exclude .gitgnore
recursive-include test *.xml *.py *.bmp
#recursive-include doc *.html *.1
python-ghostscript-0.7/Makefile 0000664 0000000 0000000 00000000175 14020722705 0016712 0 ustar 00root root 0000000 0000000
# create PNG projectlogo for project homepage
projectlogo.png: projectlogo.svg
inkscape -z -f $< -e $@ --export-height=100
python-ghostscript-0.7/README.rst 0000664 0000000 0000000 00000006224 14020722705 0016742 0 ustar 00root root 0000000 0000000 ==========================
`python-ghostscript`
==========================
---------------------------------------------------------------------
Python-Interface to the Ghostscript C-API
---------------------------------------------------------------------
:Author: Hartmut Goebel
:Version: 0.7
:License: GNU General Public License v3 or later (GPLv3+)
:Homepage: https://gitlab.com/pdftools/python-ghostscript
`Ghostscript`__ is a well known interpreter for the PostScript
language and for PDF. This package implements a interface to the
`Ghostscript C-API`__ using `ctypes`__. Both a low-level and a pythonic,
high-level interface are provided.
__ http://www.ghostscript.com/
__ http://pages.cs.wisc.edu/~ghost/doc/cvs/API.htm
__ http://docs.python.org/library/ctypes.html
This package is currently tested only under GNU/Linux. Please report
whether it works in your environment, too. Thanks.
Example
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Here is an example for how to use the high-level interface of
`python-ghostscript`. This implements a very basic ps2pdf-tool::
import sys
import locale
import ghostscript
args = [
"ps2pdf", # actual value doesn't matter
"-dNOPAUSE", "-dBATCH", "-dSAFER",
"-sDEVICE=pdfwrite",
"-sOutputFile=" + sys.argv[1],
"-c", ".setpdfwrite",
"-f", sys.argv[2]
]
# arguments have to be bytes, encode them
encoding = locale.getpreferredencoding()
args = [a.encode(encoding) for a in args]
ghostscript.Ghostscript(*args)
Here an example for passing a string document to Ghostscript::
doc = b"""%!
/Helvetica findfont 20 scalefont setfont
50 50 moveto
(Hello World) show
showpage
quit
"""
import ghostscript
args = b"""test.py
-dNOPAUSE -dBATCH -dSAFER -sDEVICE=pdfwrite -sOutputFile=/tmp/out.pdf
-c .setpdfwrite""".split()
with ghostscript.Ghostscript(*args) as gs:
gs.run_string(doc)
More examples can be found in the `examples` subdirectory of the
distribution archive.
Requirements and Installation
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
:Please note: This package is meant for developers. Even if there are
some usable examples included, installations instructions are meant
for developers.
`python-ghostscript` requires
* `Python`__ 3.6 or higher (tested with Python 3.6–3.9)
* `setuptools`__ for installation (see below)
* `Ghostscript`__ Version 9.0.8 or higher
__ http://www.python.org/download/
__ http://pypi.python.org/pypi/setuptools
__ http://www.ghostscript.com/
Installing python-ghostscript
---------------------------------
Since this package is meant for developers, we assume you have
experience in installing Python packages.
`python-ghostscript` is listed on `PyPI (Python Package Index)`__, so
you can install it using `pip install ghostscript` as usual. Please
refer to the manuals of `pip` for further information.
__ http://pypi.python.org/pypi
Alternatively you my download and unpack the source package of
`python-ghostscript` from http://pypi.python.org/pypi/ghostscript and
run::
python ./setup.py install
.. Emacs config:
Local Variables:
mode: rst
ispell-local-dictionary: "american"
End:
python-ghostscript-0.7/_zest_release_hooks.py 0000664 0000000 0000000 00000004074 14020722705 0021655 0 ustar 00root root 0000000 0000000 # Copyright 2020-2021 Hartmut Goebel
# This file is licensed under the
# GNU Affero General Public License v3 or later (AGPLv3+)
# SPDX-License-Identifier: AGPL-3.0-or-later
import glob
import os
import shutil
import subprocess
import sys
import zest.releaser.utils
def sign_release(data):
"Sign the archive that will be uploaded to PYPI."
# zest.releaser does a clean checkout where it generates tgz/zip in 'dist'
# directory and those files will be then uploaded to pypi.
dist_dir = os.path.join(data['tagdir'], 'dist')
cmd = ['gpg', '--detach-sign', '--armor']
codesigning_id = os.getenv("CODESIGNING_ID")
if not codesigning_id:
rc, codesigning_id = subprocess.getstatusoutput(
"git config --get user.signingkey")
if rc:
raise SystemExit(f"ERROR in sign_release hook: {codesigning_id}")
codesigning_id = None
if codesigning_id:
print("Using gpg identity", codesigning_id, "for signing.")
cmd.extend(['--local-user', codesigning_id])
# Sign all files in the 'dist' directory.
for f in list(os.listdir(dist_dir)):
f = os.path.join(dist_dir, f)
print('Signing file %s' % f)
subprocess.run(cmd + [f])
def run_twine_check(data):
import twine.cli
dist_dir = os.path.join(data['tagdir'], 'dist')
dist_files = list(glob.glob(os.path.join(dist_dir, "*")))
twine.cli.dispatch(["check"] + dist_files)
def safe_dist_files(data):
repo_dist_dir = os.path.join(data['reporoot'], 'dist')
dist_dir = os.path.join(data['tagdir'], 'dist')
dist_files = glob.glob(os.path.join(dist_dir, "*"))
for fn in sorted(os.listdir(dist_dir)):
src = os.path.join(dist_dir, fn)
dest = os.path.join(repo_dist_dir, fn)
if (os.path.exists(dest) and
not zest.releaser.utils.ask("Overwrite dist/%s" % fn,
default=True)):
# skip this file
print("Skipping", fn)
continue
print("Saving", fn)
shutil.copy2(src, dest)
python-ghostscript-0.7/examples/ 0000775 0000000 0000000 00000000000 14020722705 0017065 5 ustar 00root root 0000000 0000000 python-ghostscript-0.7/examples/dxmain.py 0000775 0000000 0000000 00000106547 14020722705 0020737 0 ustar 00root root 0000000 0000000 #!/usr/bin/python
# -*- coding: utf-8 -*-
"""
Ghostscript frontend which provides a graphical window
using PyGtk and python-ghostscript.
For running the demo you need PyGI (aka python-gi).
You will need to use Python 2.x because
cairo.ImageSurface.create_for_data is not yet available in Python 3,
see
.
and this was not tested in Python 3.
Run this like the gs command is used. However, using the `display`
device is required::
./dxmain.py -dBATCH -sDEVICE=display -dFitPage /path/to/eps_or_pdf
more options: http://www.ghostscript.com/doc/current/Use.htm#Output_device
see the main function to change the setup of the display device
"""
#
# This is a python port from dxmain.c by artifex http://www.artifex.com
# dxmain.c is int the ghostscript repositoty at ghostpdl/gs/psi/dxmain.c
#
# Please do not take this as an example for a GTK programm written in
# Python since the GTK-part is yet quite C-ish. This program focuses on
# interacting with the desplay device.
#
# Copyright 2013 by Lasse Fister
#
# 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 3 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, see .
#
__author__ = "Lasse Fister "
__copyright__ = "Copyright 2013 by Lasse Fister "
__licence__ = "GNU General Public License version 3 (GPL v3)"
import ghostscript._gsprint as gs
import ctypes as c
from gi.repository import Gtk, Gdk, GLib, GdkPixbuf
# fails when being used:
# from gi.repository import cairo
# using regular bindings:
import cairo
import sys
from array import array
start_string = "systemdict /start get exec\n"
#####################################################################
# stdio functions
# this looks like not needed in python. a simple dict would do it
class Stdin_buf (c.Structure):
_fields_ = [
('buf', c.POINTER(c.c_char)),
# length of buffer
('len', c.c_int),
# number of characters returned
('count', c.c_int),
]
# handler for reading non-blocking stdin
def read_stdin_handler(channel, condition, inputBuffer):
"""
where channel is fd, the file descriptor;
cb_condition is the condition that triggered the signal;
and, ... are the zero or more arguments that were passed to the
GLib.io_add_watch() function.
If the callback function returns False it will be automatically removed
from the list of event sources and will not be called again. If it
returns True it will be called again when the condition is matched.
"""
if condition & GLib.IOCondition.PRI:
print ('input exception')
inputBuffer.count = 0 #EOF
elif condition & GLib.IOCondition.IN:
try:
data = channel.readline(inputBuffer.len)
except Exception as exception:
print (exception) # dunno yet what exceptions occur here.
inputBuffer.count = -1 # this keeps the loop going
else:
if not data:
inputBuffer.count = 0
else:
inputBuffer.count = len(data)
# copy data to inputBuffer.buf
c.memmove(inputBuffer.buf, c.c_char_p(data), inputBuffer.count)
else:
print ('input condition unknown')
inputBuffer.count = 0 #EOF
return True;
# callback for reading stdin
# static int gsdll_stdin(void *instance, char *buf, int len);
def _gsdll_stdin(instance, buf, length):
inputBuffer = Stdin_buf(buf, length, -1) # buf, len, count
channel = sys.stdin
# (fd, condition, callback, user_data=None) -> source id
# callable receives (fd, condition, user_data)
# Arranges for the fd to be monitored by the main loop for the
# specified condition.
# fd : a Python file object or an integer file descriptor ID
input_tag = GLib.io_add_watch(
channel,
# condition is a combination of GLib.IOCondition.IN, GLib.IOCondition.OUT,
# GLib.IOCondition.PRI, GLib.IOCondition.ERR and GLib.IOCondition.HUP.
(GLib.IOCondition.IN | GLib.IOCondition.PRI | GLib.IOCondition.ERR | GLib.IOCondition.HUP),
read_stdin_handler,
inputBuffer
)
while inputBuffer.count < 0:
# The Gtk.main_iteration_do() function runs a single iteration of
# the main loop. If block is True block until an event occurs.
Gtk.main_iteration_do(True)
GLib.source_remove(input_tag)
return inputBuffer.count
gsdll_stdin = gs.c_stdstream_call_t(_gsdll_stdin)
#####################################################################
# dll display device
class ImageDeviceN(object):
used = 0 # int, non-zero if in use
visible = True # bool
name = None # char name[64]
cyan = 0 # int
magenta = 0 # int
yellow = 0 # int
black = 0 # int
menu = None # int, non-zero if menu item added to system menu
IMAGE_DEVICEN_MAX = 8
class ImageData(object):
def __init__ (self):
self.separation = [None] * IMAGE_DEVICEN_MAX
self.devicen = [ImageDeviceN() for i in range(0, IMAGE_DEVICEN_MAX)]
handle = None # void *handle
device = None # void *device
window = None # GtkWidget *window;
vbox = None # GtkWidget *vbox;
cmyk_bar = None # GtkWidget *cmyk_bar;
#separation = # GtkWidget *separation[IMAGE_DEVICEN_MAX];
show_as_gray = None # GtkWidget *show_as_gray;
scroll = None # GtkWidget *scroll;
darea = None # GtkWidget *darea;
buf = None # guchar *buf;
width = None # gint width;
height = None # gint height;
rowstride = None # gint rowstride;
format = None # unsigned int format;
devicen_gray = False # bool devicen_gray; true if a single separation should be shown gray
#devicen = [] # IMAGE_DEVICEN devicen[IMAGE_DEVICEN_MAX];
rgbbuf = None # guchar *rgbbuf; used when we need to convert raster format
# IMAGE *next; # no need for this as we use the images dict for lookup
images = {};
def image_find(handle, device):
try:
return images[(handle, device)]
except KeyError:
return None
def window_draw(widget, cr, img):
"""
widget is a gtk_drawing_area_new and should be equal to img.darea
this callback is called via: img.darea.connect('draw', window_draw, img)
"""
if img and img.window and img.buf:
bgcol = widget.get_style_context().get_background_color(Gtk.StateFlags.NORMAL)
cr.set_source_rgba(bgcol.red, bgcol.blue, bgcol.green, bgcol.alpha)
cr.paint()
if img.rgbbuf:
cairo_surface = cairo.ImageSurface.create_for_data(img.rgbbuf, cairo.FORMAT_RGB24, img.width, img.height, img.width * 4)
cr.set_source_surface(cairo_surface, 0, 0)
cr.paint()
return True
def window_destroy(widget, img):
del img.window
del img.scroll
del img.darea
def widget_delete(widget, *args):
widget.hide_on_delete()
def window_create(img):
""" Create a gtk window """
img.window = Gtk.Window(Gtk.WindowType.TOPLEVEL)
img.window.set_title("python gs");
img.vbox = Gtk.Box(orientation=Gtk.Orientation.VERTICAL)
img.vbox.set_homogeneous(False)
img.window.add(img.vbox)
img.vbox.show()
img.darea = Gtk.DrawingArea()
img.darea.show()
img.scroll = Gtk.ScrolledWindow(None, None)
img.scroll.show()
img.scroll.set_policy(Gtk.PolicyType.ALWAYS, Gtk.PolicyType.ALWAYS)
img.scroll.add_with_viewport(img.darea)
img.vbox.pack_start(img.scroll, True, True, 0)
img.darea.connect('draw', window_draw, img)
img.window.connect('destroy', window_destroy, img)
img.window.connect('delete-event', widget_delete)
# do not show img->window until we know the image size
def window_resize(img):
img.darea.set_size_request(img.width, img.height)
visible = img.window.get_visible()
if not visible:
# We haven't yet shown the window, so set a default size
# which is smaller than the desktop to allow room for
# desktop toolbars, and if possible a little larger than
# the image to allow room for the scroll bars.
# We don't know the width of the scroll bars, so just guess.
img.window.set_default_size(
min(Gdk.Screen.width()-96, img.width+24),
min(Gdk.Screen.height()-96, img.height+24)
)
def window_separation(img, sep):
img.devicen[sep].visible = not img.devicen[sep].visible
display_sync(img.handle, img.device)
def get_signal_separation(sep):
def signal_sep_i(widget, img):
window_separation(img, sep)
return signal_sep_i
def window_add_button(img, label, callback):
w = Gtk.CheckButton.new_with_label(label or '')
img.cmyk_bar.pack_start(w, False, False, 5)
w.set_active(True)
w.connect('clicked', callback, img)
w.show()
return w
def signal_show_as_gray(widget, img):
img.devicen_gray = not img.devicen_gray
display_sync(img.handle, img.device)
def display_open(handle, device):
""" New device has been opened """
img = ImageData()
# add to list
images[(handle, device)] = img
# remember device and handle
img.handle = handle
img.device = device
# create window
window_create(img);
Gtk.main_iteration_do(False)
return 0;
def display_preclose(handle, device):
img = image_find(handle, device)
if img is None:
return -1
Gtk.main_iteration_do(False)
img.buf = None
img.width = 0
img.height = 0
img.rowstride = 0
img.format = 0
img.window.destroy()
img.window = None
img.scroll = None
img.darea = None
img.rgbbuf = None
Gtk.main_iteration_do(False)
return 0;
def display_close(handle, device):
img = image_find(handle, device)
if img is None:
return -1
# remove from list
del images[(handle, device)]
return 0;
def display_presize(handle, device, width, height, raster, format):
# Assume everything is OK.
# It would be better to return e_rangecheck if we can't
# support the format.
return 0;
def display_size(handle, device, width, height, raster, format, pimage):
img = image_find(handle, device)
if img is None:
return -1
img.rgbbuf = None
img.width = width
img.height = height
img.rowstride = raster
img.buf = pimage
img.format = format
# Reset separations
for i in range(0, IMAGE_DEVICEN_MAX):
img.devicen[i].used = 0
img.devicen[i].visible = True
img.devicen[i].name = None
img.devicen[i].cyan = 0
img.devicen[i].magenta = 0
img.devicen[i].yellow = 0
img.devicen[i].black = 0
color = img.format & gs.DISPLAY_COLORS_MASK
depth = img.format & gs.DISPLAY_DEPTH_MASK
alpha = img.format & gs.DISPLAY_ALPHA_MASK
if color == gs.DISPLAY_COLORS_CMYK:
if depth == gs.DISPLAY_DEPTH_1 or depth == gs.DISPLAY_DEPTH_8:
# We already know about the CMYK components
img.devicen[0].used = 1
img.devicen[0].cyan = 65535
img.devicen[0].name = 'Cyan'
img.devicen[1].used = 1
img.devicen[1].magenta = 65535
img.devicen[1].name = 'Magenta'
img.devicen[2].used = 1
img.devicen[2].yellow = 65535
img.devicen[2].name = 'Yellow'
img.devicen[3].used = 1
img.devicen[3].black = 65535
img.devicen[3].name = 'Black'
else:
return gs.e_rangecheck # not supported
elif color == gs.DISPLAY_COLORS_NATIVE \
and not (depth == gs.DISPLAY_DEPTH_8 or depth == gs.DISPLAY_DEPTH_16):
return gs.e_rangecheck # not supported
elif color == gs.DISPLAY_COLORS_GRAY and depth != gs.DISPLAY_DEPTH_8:
return gs.e_rangecheck # not supported
elif color == gs.DISPLAY_COLORS_RGB and depth != gs.DISPLAY_DEPTH_8:
return gs.e_rangecheck # not supported
elif color == gs.DISPLAY_COLORS_SEPARATION and depth != gs.DISPLAY_DEPTH_8:
return gs.e_rangecheck # not supported
if color == gs.DISPLAY_COLORS_CMYK or color == gs.DISPLAY_COLORS_SEPARATION:
if not isinstance(img.cmyk_bar, Gtk.Widget):
# add bar to select separation
img.cmyk_bar = Gtk.Box(orientation=Gtk.Orientation.HORIZONTAL)
img.cmyk_bar.set_homogeneous(False)
img.vbox.pack_start(img.cmyk_bar, False, False, 0)
for i in range(0, IMAGE_DEVICEN_MAX):
img.separation[i] = window_add_button(img, img.devicen[i].name, get_signal_separation(i))
img.show_as_gray = Gtk.CheckButton.new_with_label('Show as Gray')
img.cmyk_bar.pack_end(img.show_as_gray, False, False, 5)
img.show_as_gray.set_active(False)
img.show_as_gray.connect('clicked', signal_show_as_gray, img)
img.show_as_gray.show()
img.cmyk_bar.show()
elif isinstance(img.cmyk_bar, Gtk.Widget):
img.cmyk_bar.hide()
window_resize(img)
visible = img.window.get_visible()
if not visible:
img.window.show_all()
Gtk.main_iteration_do(False)
return 0
def display_sync(handle, device):
"""
This will set a pixel buffer to img.rgbbuf in the the cairo.FORMAT_RGB24
However the Format is documented as:
"each pixel is a 32-bit quantity, with the upper 8 bits unused.
Red, Green, and Blue are stored in the remaining 24 bits in that order."
But on my local machine its BGRx not RGBx
Real Alpha values where not tested just DISPLAY_ALPHA_NONE DISPLAY_UNUSED_FIRST and DISPLAY_UNUSED_LAST
This should be in C or something like that, as most of it would be a hundred times faster
See the case for the native cairo.FORMAT_RGB24. Thats the only fast case.
"""
img = image_find(handle, device)
if img is None:
return -1
color = img.format & gs.DISPLAY_COLORS_MASK
depth = img.format & gs.DISPLAY_DEPTH_MASK
endian = img.format & gs.DISPLAY_ENDIAN_MASK
native555 = img.format & gs.DISPLAY_555_MASK
alpha = img.format & gs.DISPLAY_ALPHA_MASK
if (color == gs.DISPLAY_COLORS_CMYK) or (color == gs.DISPLAY_COLORS_SEPARATION):
#check if separations have changed
for i in range(0, IMAGE_DEVICEN_MAX):
label = img.separation[i].get_label()
if not img.devicen[i].used:
img.separation[i].hide()
elif img.devicen[i].name != label:
# text has changed, update it
img.separation[i].set_label(img.devicen[i].name)
img.separation[i].show()
# some formats need to be converted for use by GdkRgb
if color == gs.DISPLAY_COLORS_NATIVE:
if depth == gs.DISPLAY_DEPTH_16:
if endian == gs.DISPLAY_LITTLEENDIAN:
if native555 == gs.DISPLAY_NATIVE_555:
# RGB555
# worked with
# gs.DISPLAY_COLORS_NATIVE | gs.DISPLAY_DEPTH_16 | gs.DISPLAY_LITTLEENDIAN | gs.DISPLAY_NATIVE_555
img.rgbbuf = array('B')
bufIdx = 0
stride = img.rowstride - (img.width * 2)
for idx in range(0, img.height * img.width):
if idx % img.width == 0 and idx != 0:
bufIdx += stride
w = img.buf[bufIdx] + (img.buf[bufIdx+1] << 8)
value = w & 0x1f #blue
img.rgbbuf.append((value << 3) + (value >> 2))
value = (w >> 5) & 0x1f #green
img.rgbbuf.append((value << 3) + (value >> 2))
value = (w >> 10) & 0x1f #red
img.rgbbuf.append( (value << 3) + (value >> 2))
img.rgbbuf.append(0) # x
bufIdx += 2
else:
# RGB565
# worked with
# gs.DISPLAY_COLORS_NATIVE | gs.DISPLAY_DEPTH_16 | gs.DISPLAY_LITTLEENDIAN | gs.DISPLAY_NATIVE_565
img.rgbbuf = array('B')
bufIdx = 0
stride = img.rowstride - (img.width * 2)
for idx in range(0, img.height * img.width):
if idx % img.width == 0 and idx != 0:
bufIdx += stride
w = img.buf[bufIdx] + (img.buf[bufIdx+1] << 8)
value = w & 0x1f # blue
img.rgbbuf.append((value << 3) + (value >> 2))
value = (w >> 5) & 0x3f # green
img.rgbbuf.append((value << 2) + (value >> 4))
value = (w >> 11) & 0x1f #red
img.rgbbuf.append((value << 3) + (value >> 2))
img.rgbbuf.append(0) # x
bufIdx += 2
else:
if native555 == gs.DISPLAY_NATIVE_555:
# RGB555
# worked with
# gs.DISPLAY_COLORS_NATIVE | gs.DISPLAY_DEPTH_16 | gs.DISPLAY_NATIVE_555 | gs.DISPLAY_BIGENDIAN
img.rgbbuf = array('B')
bufIdx = 0
stride = img.rowstride - (img.width * 2)
for idx in range(0, img.height * img.width):
if idx % img.width == 0 and idx != 0:
bufIdx += stride
w = img.buf[bufIdx+1] + (img.buf[bufIdx] << 8)
value = w & 0x1f # blue
img.rgbbuf.append((value << 3) + (value >> 2))
value = (w >> 5) & 0x1f # green
img.rgbbuf.append((value << 3) + (value >> 2))
value = (w >> 10) & 0x1f #red
img.rgbbuf.append((value << 3) + (value >> 2))
img.rgbbuf.append(0) # x
bufIdx += 2
else:
# RGB565
# worked with
# gs.DISPLAY_COLORS_NATIVE | gs.DISPLAY_DEPTH_16 | gs.DISPLAY_NATIVE_565 | gs.DISPLAY_BIGENDIAN
img.rgbbuf = array('B')
bufIdx = 0
stride = img.rowstride - (img.width * 2)
for idx in range(0, img.height * img.width):
if idx % img.width == 0 and idx != 0:
bufIdx += stride
w = img.buf[bufIdx+1] + (img.buf[bufIdx] << 8)
value = w & 0x1f # blue
img.rgbbuf.append((value << 3) + (value >> 2))
value = (w >> 5) & 0x3f # green
img.rgbbuf.append((value << 2) + (value >> 4))
value = (w >> 11) & 0x1f # red
img.rgbbuf.append((value << 3) + (value >> 2))
img.rgbbuf.append(0) # x
bufIdx += 2
if depth == gs.DISPLAY_DEPTH_8:
# palette of 96 colors
# worked with
# gs.DISPLAY_COLORS_NATIVE | gs.DISPLAY_DEPTH_8
color = [[0,0,0]] * 96
one = 255 // 3
for i in range(0, 96):
# 0->63 = 00RRGGBB, 64->95 = 010YYYYY
if i < 64:
color[i] = (
((i & 0x30) >> 4) * one, # r
((i & 0x0c) >> 2) * one, # g
(i & 0x03) * one # b
)
else:
value = i & 0x1f
value = (value << 3) + (value >> 2)
color[i] = (value, value, value)
img.rgbbuf = array('B')
bufIdx = 0
stride = img.rowstride - img.width
for idx in range(0, img.height * img.width):
if idx % img.width == 0 and idx != 0:
bufIdx += stride
w = img.buf[bufIdx]
img.rgbbuf.extend([
color[w][2], # b
color[w][1], # g
color[w][0], # r
0 # x
])
bufIdx += 1
elif color == gs.DISPLAY_COLORS_GRAY:
if depth == gs.DISPLAY_DEPTH_8:
# gray 8 bit
# worked with
# gs.DISPLAY_COLORS_GRAY | gs.DISPLAY_DEPTH_8
img.rgbbuf = array('B')
bufIdx = 0
stride = img.rowstride - img.width
for idx in range(0, img.height * img.width):
if idx % img.width == 0 and idx != 0:
bufIdx += stride
w = img.buf[bufIdx]
img.rgbbuf.extend([
w, # b
w, # g
w, # r
0 # x
])
bufIdx += 1
elif color == gs.DISPLAY_COLORS_RGB:
if depth == gs.DISPLAY_DEPTH_8 and (
alpha == gs.DISPLAY_ALPHA_FIRST or alpha == gs.DISPLAY_UNUSED_FIRST
) and endian == gs.DISPLAY_BIGENDIAN:
# xRGB
# worked with
# gs.DISPLAY_COLORS_RGB | gs.DISPLAY_UNUSED_FIRST | gs.DISPLAY_DEPTH_8 | gs.DISPLAY_BIGENDIAN
img.rgbbuf = array('B')
bufIdx = 0
stride = img.rowstride - (img.width * 4)
for idx in range(0, img.height * img.width):
if idx % img.width == 0 and idx != 0:
bufIdx += stride
# img.buf[bufIdx] x = filler
img.rgbbuf.extend([
img.buf[bufIdx + 3], # b
img.buf[bufIdx + 2], # g
img.buf[bufIdx + 1], # r
0 # x
])
bufIdx += 4
elif depth == gs.DISPLAY_DEPTH_8 and endian == gs.DISPLAY_LITTLEENDIAN:
if alpha == gs.DISPLAY_UNUSED_LAST or alpha == gs.DISPLAY_ALPHA_LAST:
# cairo.FORMAT_RGB24 BGRx. no conversation is needed to display this with cairo
# worked with
# gs.DISPLAY_COLORS_RGB | gs.DISPLAY_UNUSED_LAST | gs.DISPLAY_DEPTH_8 | gs.DISPLAY_LITTLEENDIAN
bufIdx = 0
hasStride = img.rowstride > img.width * 4
if not hasStride:
# fast
buffer_size = img.height * img.width * 4
img.rgbbuf = c.create_string_buffer(buffer_size)
c.memmove(img.rgbbuf, img.buf, buffer_size)
else:
# slow. This has a stride between the rows, what is a bad thing
# thus we can't copy the buffer directly, like above
img.rgbbuf = array('B')
for y in range(0, img.height):
bufIdx = y * img.rowstride
img.rgbbuf.extend(img.buf[bufIdx:bufIdx+img.width * 4])
elif alpha == gs.DISPLAY_UNUSED_FIRST or alpha == gs.DISPLAY_ALPHA_FIRST:
# xBGR
# worked with
# gs.DISPLAY_COLORS_RGB | gs.DISPLAY_UNUSED_FIRST | gs.DISPLAY_DEPTH_8 | gs.DISPLAY_LITTLEENDIAN
img.rgbbuf = array('B')
bufIdx = 0
stride = img.rowstride - (img.width * 4)
for idx in range(0, img.height * img.width):
if idx % img.width == 0 and idx != 0:
bufIdx += stride
img.rgbbuf.extend([
img.buf[bufIdx + 1], # r
img.buf[bufIdx + 2], # g
img.buf[bufIdx + 3], # b
0 # x
])
bufIdx += 4
else:
# BGR24
# worked with
# gs.DISPLAY_COLORS_RGB | gs.DISPLAY_UNUSED_FIRST | gs.DISPLAY_DEPTH_8 | gs.DISPLAY_ALPHA_NONE
img.rgbbuf = array('B')
bufIdx = 0
stride = img.rowstride - (img.width * 3)
for idx in range(0, img.height * img.width):
if idx % img.width == 0 and idx != 0:
bufIdx += stride
img.rgbbuf.extend([
img.buf[bufIdx ], # b
img.buf[bufIdx + 1], # g
img.buf[bufIdx + 2], # r
0 # x
])
bufIdx += 3
elif depth == gs.DISPLAY_DEPTH_8 and alpha == gs.DISPLAY_ALPHA_NONE \
and endian == gs.DISPLAY_BIGENDIAN:
# RGB24
# worked with:
# gs.DISPLAY_COLORS_RGB | gs.DISPLAY_ALPHA_NONE | gs.DISPLAY_DEPTH_8 | gs.DISPLAY_BIGENDIAN
img.rgbbuf = array('B')
bufIdx = 0
stride = img.rowstride - (img.width * 3)
for idx in range(0, img.height * img.width):
if idx % img.width == 0 and idx != 0:
bufIdx += stride
img.rgbbuf.extend([
img.buf[bufIdx + 2], # b
img.buf[bufIdx + 1], # g
img.buf[bufIdx + 0], # r
0 # x
])
bufIdx += 3
elif color == gs.DISPLAY_COLORS_CMYK:
if depth == gs.DISPLAY_DEPTH_8:
# worked with:
# gs.DISPLAY_COLORS_CMYK | gs.DISPLAY_ALPHA_NONE | gs.DISPLAY_DEPTH_8 | gs.DISPLAY_BIGENDIAN
vc = img.devicen[0].visible
vm = img.devicen[1].visible
vy = img.devicen[2].visible
vk = img.devicen[3].visible
vall = vc and vm and vy and vk
show_gray = (vc + vm + vy + vk == 1) and img.devicen_gray
img.rgbbuf = array('B')
bufIdx = 0
stride = img.rowstride - (img.width * 4)
for idx in range(0, img.height * img.width):
if idx % img.width == 0 and idx != 0:
bufIdx += stride
cyan = img.buf[bufIdx ]
magenta = img.buf[bufIdx + 1]
yellow = img.buf[bufIdx + 2]
black = img.buf[bufIdx + 3]
if not vall:
if not vc:
cyan = 0
if not vm:
magenta = 0
if not vy:
yellow = 0
if not vk:
black = 0
if show_gray:
black += cyan + magenta + yellow
cyan = magenta = yellow = 0
img.rgbbuf.extend([
(255-yellow) * (255-black) // 255, # b
(255-magenta) * (255-black) // 255, # g
(255-cyan) * (255-black) // 255, # r
0 # x
])
bufIdx += 4
elif depth == gs.DISPLAY_DEPTH_1:
# worked with:
# gs.DISPLAY_COLORS_CMYK | gs.DISPLAY_ALPHA_NONE | gs.DISPLAY_DEPTH_1 | gs.DISPLAY_BIGENDIAN
vc = img.devicen[0].visible
vm = img.devicen[1].visible
vy = img.devicen[2].visible
vk = img.devicen[3].visible
vall = vc and vm and vy and vk
show_gray = (vc + vm + vy + vk == 1) and img.devicen_gray
img.rgbbuf = array('B')
for y in range(0, img.height):
bufIdx = y * img.rowstride
for x in range(0, img.width):
value = img.buf[bufIdx + x//2]
# (x & 0) always evaluates to 0. What are you trying to do?
# If you're trying to test the bit, you want to do "!(x & 1)".
# if x & 0:
if not (x & 1):
value >>= 4
cyan = ((value >> 3) & 1) * 255
magenta = ((value >> 2) & 1) * 255
yellow = ((value >> 1) & 1) * 255
black = ( value & 1) * 255
if not vall:
if not vc:
cyan = 0
if not vm:
magenta = 0
if not vy:
yellow = 0
if not vk:
black = 0
if show_gray:
black += cyan + magenta + yellow
cyan = magenta = yellow = 0
img.rgbbuf.extend([
(255-yellow) * (255-black) // 255, # b
(255-magenta) * (255-black) // 255, # g
(255-cyan) * (255-black) // 255, # r
0 # x
])
elif color == gs.DISPLAY_COLORS_SEPARATION:
if depth == gs.DISPLAY_DEPTH_8:
# worked with:
# gs.DISPLAY_COLORS_SEPARATION | gs.DISPLAY_ALPHA_NONE | gs.DISPLAY_DEPTH_8 | gs.DISPLAY_BIGENDIAN
num_comp = 0
num_visible = 0
show_gray = False
for j in range(0, IMAGE_DEVICEN_MAX):
if img.devicen[j].used:
num_comp = j+1
if img.devicen[j].visible:
num_visible += 1
if num_visible == 1 and img.devicen_gray:
show_gray = True
img.rgbbuf = array('B')
bufIdx = 0
stride = img.rowstride - (img.width * 8)
for idx in range(0, img.height * img.width):
if idx % img.width == 0 and idx != 0:
bufIdx += stride
cyan = magenta = yellow = black = 0
if show_gray:
for j in range(0, num_comp):
devicen = img.devicen[j]
if devicen.visible and devicen.used:
black += img.buf[bufIdx + j]
else:
for j in range(0, num_comp):
devicen = img.devicen[j]
if devicen.visible and devicen.used:
value = img.buf[bufIdx + j]
cyan += value * devicen.cyan // 65535
magenta += value * devicen.magenta // 65535
yellow += value * devicen.yellow // 65535
black += value * devicen.black // 65535
cyan = min(255, cyan)
magenta = min(255, magenta)
yellow = min(255, yellow)
black = min(255, black)
img.rgbbuf.extend([
(255-yellow) * (255-black) // 255, # b
(255-magenta) * (255-black) // 255, # g
(255-cyan) * (255-black) // 255, # r
0 # x
])
bufIdx += 8
if not isinstance(img.window, Gtk.Widget):
window_create(img)
window_resize(img)
visible = img.window.get_visible()
if not visible:
img.window.show_all()
img.darea.queue_draw()
Gtk.main_iteration_do(False)
return 0
def display_page(handle, device, copies, flush):
display_sync(handle, device)
return 0;
def display_update(handle, device, x, y, w, h):
""" not implemented - eventually this will be used for progressive update """
return 0
def display_separation(handle, device, comp_num, name, c, m, y, k):
""" setup the colors for each used ink"""
img = image_find(handle, device)
if img is None:
return -1
if comp_num < 0 or comp_num > IMAGE_DEVICEN_MAX:
return -1
img.devicen[comp_num].used = 1
img.devicen[comp_num].name = name
img.devicen[comp_num].cyan = c
img.devicen[comp_num].magenta = m
img.devicen[comp_num].yellow = y
img.devicen[comp_num].black = k
return 0
# callback structure for "display" device
display = gs.Display_callback_s(
c.c_int(c.sizeof(gs.Display_callback_s)),
c.c_int(gs.DISPLAY_VERSION_MAJOR),
c.c_int(gs.DISPLAY_VERSION_MINOR),
gs.c_display_open(display_open),
gs.c_display_preclose(display_preclose),
gs.c_display_close(display_close),
gs.c_display_presize(display_presize),
gs.c_display_size(display_size),
gs.c_display_sync(display_sync),
gs.c_display_page(display_page),
#gs.c_display_update(display_update),
c.cast(None, gs.c_display_update),
c.cast(None, gs.c_display_memalloc), # NULL, /* memalloc */
c.cast(None, gs.c_display_memfree), # NULL, /* memfree */
gs.c_display_separation(display_separation)
)
def main(argv):
code = 1
use_gui, _ = Gtk.init_check(argv)
# insert display device parameters as first arguments
# this controls the format of the pixbuf that ghostscript will deliver
# see display_sync for details
# fast
CAIRO_FORMAT_RGB24 = gs.DISPLAY_COLORS_RGB | gs.DISPLAY_UNUSED_LAST | \
gs.DISPLAY_DEPTH_8 | gs.DISPLAY_LITTLEENDIAN
# interesting
SEPARATION_FORMAT = gs.DISPLAY_COLORS_SEPARATION | gs.DISPLAY_ALPHA_NONE | \
gs.DISPLAY_DEPTH_8 | gs.DISPLAY_BIGENDIAN
# if there are spot colors they are mixed into the cmyk values
CMYK_FORMAT = gs.DISPLAY_COLORS_CMYK | gs.DISPLAY_ALPHA_NONE | \
gs.DISPLAY_DEPTH_8 | gs.DISPLAY_BIGENDIAN
dformat = "-dDisplayFormat=%d" % \
( CAIRO_FORMAT_RGB24 | gs.DISPLAY_TOPFIRST )
nargv = [argv[0], dformat] + argv[1:]
#run Ghostscript
try:
instance = gs.new_instance()
gs.set_stdio(instance, gsdll_stdin, None, None)
if use_gui:
gs.set_display_callback(instance, c.byref(display))
code = gs.init_with_args(instance, nargv)
if code == 0:
code = gs.run_string(instance, start_string)
code1 = gs.exit(instance)
if code == 0 or code == gs.e_Quit:
code = code1
if code == gs.e_Quit:
code = 0 # user executed 'quit'
gs.delete_instance(instance)
except gs.GhostscriptError as e:
code = e.code
sys.stderr.write(e.message)
finally:
exit_status = 0;
if code in [0, gs.e_Info, gs.e_Quit]:
pass
elif code == gs.e_Fatal:
exit_status = 1
else:
exit_status = 255
return exit_status
if __name__ == '__main__':
code = main(sys.argv)
sys.stdout.write('\n') # or bash will get out of sync ...
sys.exit(code)
python-ghostscript-0.7/examples/gs.py 0000664 0000000 0000000 00000002314 14020722705 0020050 0 ustar 00root root 0000000 0000000 #!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# This file is part of python-ghostscript.
# Copyright 2010-2021 by Hartmut Goebel
#
# 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 3 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, see .
#
__author__ = "Hartmut Goebel "
__copyright__ = "Copyright 2010-2021 by Hartmut Goebel "
__licence__ = "GNU General Public License version 3 (GPL v3)"
import sys
import ghostscript
import locale
encoding = locale.getpreferredencoding()
# arguments have to be bytes, encode them
args = sys.argv
args = [a.encode(encoding) for a in args]
ghostscript.Ghostscript(*args)
python-ghostscript-0.7/examples/lowlevel1.py 0000664 0000000 0000000 00000003111 14020722705 0021345 0 ustar 00root root 0000000 0000000 #!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# This file is part of python-ghostscript.
# Copyright 2010-2021 by Hartmut Goebel
#
# 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 3 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, see .
#
__author__ = "Hartmut Goebel "
__copyright__ = "Copyright 2010-2021 by Hartmut Goebel "
__licence__ = "GNU General Public License version 3 (GPL v3)"
__credits__ = "Based on an example from http://www.ghostscript.com/doc/8.63/API.htm"
import sys
from ghostscript import _gsprint as gs
args = [
b"ps2pdf", # actual value doesn't matter
b"-dNOPAUSE",
b"-dBATCH",
b"-dSAFER",
b"-sDEVICE=pdfwrite",
b"-sOutputFile=/tmp/out.pdf",
b"-c",
b".setpdfwrite",
b"-f",
b"test.ps"
]
instance = gs.new_instance()
code = gs.init_with_args(instance, args)
code1 = gs.exit(instance)
if code == 0 or code == gs.e_Quit:
code = code1
gs.delete_instance(instance)
if not (code == 0 or code == gs.e_Quit):
sys.exit(1)
python-ghostscript-0.7/examples/lowlevel2.py 0000664 0000000 0000000 00000003324 14020722705 0021354 0 ustar 00root root 0000000 0000000 #!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# This file is part of python-ghostscript.
# Copyright 2010-2021 by Hartmut Goebel
#
# 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 3 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, see .
#
__author__ = "Hartmut Goebel "
__copyright__ = "Copyright 2010-2021 by Hartmut Goebel "
__licence__ = "GNU General Public License version 3 (GPL v3)"
__credits__ = "Based on an example from http://www.ghostscript.com/doc/8.63/API.htm"
import sys
from ghostscript import _gsprint as gs
import locale
start_string = b"systemdict /start get exec\n"
# arguments have to be bytes, encode them
encoding = locale.getpreferredencoding()
args = sys.argv
args = [a.encode(encoding) for a in args]
instance = gs.new_instance()
# no benefit in using set_stdio()
#gs.set_stdio(isntance, gsdll_stdin, gsdll_stdout, gsdll_stderr)
code = gs.init_with_args(instance, args)
if code == 0:
code = gs.run_string(instance, start_string)
code1 = gs.exit(instance)
if code == 0 or code == gs.e_Quit:
code = code1
gs.delete_instance(instance)
if not (code == 0 or code == gs.e_Quit):
sys.exit(1)
python-ghostscript-0.7/examples/lowlevel3.py 0000664 0000000 0000000 00000003546 14020722705 0021363 0 ustar 00root root 0000000 0000000 #!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# This file is part of python-ghostscript.
# Copyright 2010-2021 by Hartmut Goebel
#
# 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 3 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, see .
#
__author__ = "Hartmut Goebel "
__copyright__ = "Copyright 2010-2021 by Hartmut Goebel "
__licence__ = "GNU General Public License version 3 (GPL v3)"
__credits__ = "Based on an example from http://www.ghostscript.com/doc/8.63/API.htm"
import sys
from ghostscript import _gsprint as gs
import locale
command = b"1 2 add == flush\n"
# arguments have to be bytes, encode them
encoding = locale.getpreferredencoding()
args = sys.argv
args = [a.encode(encoding) for a in args]
instance = gs.new_instance()
# no benefit in using set_stdio()
#gs.set_stdio(isntance, gsdll_stdin, gsdll_stdout, gsdll_stderr)
code = gs.init_with_args(instance, args)
if code == 0:
gs.run_string_begin(instance);
gs.run_string_continue(instance, command);
gs.run_string_continue(instance, b"qu");
gs.run_string_continue(instance, b"it");
gs.run_string_end(instance);
code1 = gs.exit(instance)
if code == 0 or code == gs.e_Quit:
code = code1
gs.delete_instance(instance)
if not (code == 0 or code == gs.e_Quit):
sys.exit(1)
python-ghostscript-0.7/examples/ps2pdf.py 0000664 0000000 0000000 00000004727 14020722705 0020647 0 ustar 00root root 0000000 0000000 #!/usr/bin/env python
"""
This is a rough Python implementation of the shellscript ps2pdfwr
which comes with Ghostscript.
"""
# -*- coding: utf-8 -*-
#
# This file is part of python-ghostscript.
# Copyright 2010-2021 by Hartmut Goebel
#
# 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 3 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, see .
#
__author__ = "Hartmut Goebel "
__copyright__ = "Copyright 2010-2021 by Hartmut Goebel "
__licence__ = "GNU General Public License version 3 (GPL v3)"
import sys
import os
import locale
encoding = locale.getpreferredencoding()
import ghostscript
options = ["-dSAFER"]
args = sys.argv[1:]
while args:
arg = args[0]
if arg.startswith('-') and len(arg) > 1:
options.append(arg)
arg = args.pop(0)
else:
break
def usage():
print("Usage:", os.path.basename(sys.argv[0]),
"[options...] (input.[e]ps|-) [output.pdf|-]",
file=sys.stderr)
sys.exit(1)
if len(args) not in (1,2):
usage()
infile = args[0]
if len(args) == 1:
if infile == '-':
outfile = '-'
else:
base, ext = os.path.splitext(os.path.basename(infile))
if ext in ('.ps', '.eps'):
outfile = base + '.pdf'
else:
outfile = base + ext + '.pdf'
else:
outfile = args[1]
# We have to include the options twice because -I only takes effect if
# it appears before other options.
args = [os.path.basename(sys.argv[0])] # actual value doesn't matter
args.extend(options)
args.extend(["-q", "-dNOPAUSE","-dBATCH", "-sDEVICE=pdfwrite",
"-sstdout=%stderr",
"-sOutputFile=" + outfile])
args.extend(options)
args.extend(["-c", ".setpdfwrite", "-f", infile])
# arguments have to be bytes, encode them
args = [a.encode(encoding) for a in args]
# After all these preperations, calling Ghostscript is a piece of cake:
ghostscript.Ghostscript(*args)
python-ghostscript-0.7/examples/run-dxmain.sh 0000664 0000000 0000000 00000000317 14020722705 0021504 0 ustar 00root root 0000000 0000000 #!/bin/sh
if [ -z "$PYTHON" ] ; then PYTHON=python ; fi
cd $(dirname $0)
PYTHONPATH=$(realpath ..):$PYTHONPATH
$PYTHON ./dxmain.py -dBATCH -sDEVICE=display \
-sDEFAULTPAPERSIZE=a5 -dFitPage ./test.ps
python-ghostscript-0.7/examples/run-string.bat 0000664 0000000 0000000 00000001552 14020722705 0021670 0 ustar 00root root 0000000 0000000 @REM based on http://bugs.python.org/file13578/install_scripts.py
@echo off
set SCRIPT=%~dp0\run-string.py
set PYTHON=C:\Python27\python.exe
set SCRIPT_ERRORLEVEL=
@REM Credit where credit is due: we return the exit code despite our
@REM use of setlocal+endlocal using a technique from Bear's Journal:
@REM http://code-bear.com/bearlog/2007/06/01/getting-the-exit-code-from-a-batch-file-that-is-run-from-a-python-program/
setlocal
@REM ensure the script will be executed with the Python it was installed for
set path=%~dp0;%~dp0..;%path%
%PYTHON% "%SCRIPT%" %*
endlocal & set SCRIPT_ERRORLEVEL=%ERRORLEVEL%
if NOT "%COMSPEC%" == "%SystemRoot%\\system32\\cmd.exe" goto returncode
if errorlevel 9009 echo You do not have python in your PATH.
goto endscript
:returncode
exit /B %SCRIPT_ERRORLEVEL%
:endscript
call :returncode %SCRIPT_ERRORLEVEL%
python-ghostscript-0.7/examples/run-string.py 0000664 0000000 0000000 00000003036 14020722705 0021551 0 ustar 00root root 0000000 0000000 #!/usr/bin/env python
"""
Simple test program using run_string() and run_file()
"""
# -*- coding: utf-8 -*-
#
# This file is part of python-ghostscript.
# Copyright 2010-2021 by Hartmut Goebel
#
# 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 3 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, see .
#
__author__ = "Hartmut Goebel "
__copyright__ = "Copyright 2010-2021 by Hartmut Goebel "
__licence__ = "GNU General Public License version 3 (GPL v3)"
doc = b"""%!
/Helvetica findfont
20 scalefont
setfont
50 50 moveto
(Hallo \(W \)elt!) show
1 0 0 setrgbcolor
<416c6c20646f6e652e> show
0 1 0 setrgbcolor
<48616c6c6f205c2857205c29656c5c7421> show
showpage
"""
import io
import ghostscript
args = b"""test.py
-dNOPAUSE -dBATCH -dSAFER -sDEVICE=pdfwrite -sOutputFile=/tmp/out.pdf
-c .setpdfwrite""".split()
GS = ghostscript.Ghostscript(*args)
try:
GS.run_string(doc)
GS.run_file(io.BytesIO(doc))
finally:
GS.exit()
python-ghostscript-0.7/examples/test-gs.sh 0000664 0000000 0000000 00000000362 14020722705 0021010 0 ustar 00root root 0000000 0000000 #!/bin/sh
if [ -z "$PYTHON" ] ; then PYTHON=python ; fi
cd $(dirname $0)
PYTHONPATH=$(realpath ..):$PYTHONPATH
$PYTHON ./gs.py \
-dNOPAUSE -dBATCH -dSAFER -sDEVICE=pdfwrite -sOutputFile=/tmp/out.pdf \
-c .setpdfwrite -f ./test.ps
python-ghostscript-0.7/examples/test-lowlevel1.sh 0000664 0000000 0000000 00000000211 14020722705 0022302 0 ustar 00root root 0000000 0000000 #!/bin/sh
if [ -z "$PYTHON" ] ; then PYTHON=python ; fi
cd $(dirname $0)
PYTHONPATH=$(realpath ..):$PYTHONPATH
$PYTHON ./lowlevel1.py
python-ghostscript-0.7/examples/test-lowlevel2.sh 0000664 0000000 0000000 00000000370 14020722705 0022311 0 ustar 00root root 0000000 0000000 #!/bin/sh
if [ -z "$PYTHON" ] ; then PYTHON=python ; fi
cd $(dirname $0)
PYTHONPATH=$(realpath ..):$PYTHONPATH
$PYTHON ./lowlevel2.py \
-dNOPAUSE -dBATCH -dSAFER -sDEVICE=pdfwrite -sOutputFile=/tmp/out.pdf \
-c .setpdfwrite -f ./test.ps
python-ghostscript-0.7/examples/test-lowlevel3.sh 0000664 0000000 0000000 00000000371 14020722705 0022313 0 ustar 00root root 0000000 0000000 #!/bin/sh
if [ -z "$PYTHON" ] ; then PYTHON=python ; fi
cd $(dirname $0)
PYTHONPATH=$(realpath ..):$PYTHONPATH
$PYTHON ./lowlevel3.py \
-dNOPAUSE -dBATCH -dSAFER -sDEVICE=pdfwrite -sOutputFile=/tmp/out.pdf \
-c .setpdfwrite -f ./test.ps
python-ghostscript-0.7/examples/test-ps2pdf.sh 0000664 0000000 0000000 00000000235 14020722705 0021574 0 ustar 00root root 0000000 0000000 #!/bin/sh
if [ -z "$PYTHON" ] ; then PYTHON=python ; fi
cd $(dirname $0)
PYTHONPATH=$(realpath ..):$PYTHONPATH
$PYTHON ./ps2pdf.py ./test.ps /tmp/out.pdf
python-ghostscript-0.7/examples/test.ps 0000664 0000000 0000000 00000000302 14020722705 0020403 0 ustar 00root root 0000000 0000000 %!
/Helvetica findfont 20 scalefont setfont
50 50 moveto
(Hallo \(W \)elt!) show
1 0 0 setrgbcolor
<416c6c20646f6e652e> show
0 1 0 setrgbcolor
<48616c6c6f205c2857205c29656c5c7421> show
showpage
python-ghostscript-0.7/ghostscript/ 0000775 0000000 0000000 00000000000 14020722705 0017620 5 ustar 00root root 0000000 0000000 python-ghostscript-0.7/ghostscript/__init__.py 0000664 0000000 0000000 00000013355 14020722705 0021740 0 ustar 00root root 0000000 0000000 #!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
ghostscript - A Python interface for the Ghostscript interpreter C-API
"""
#
# This file is part of python-ghostscript.
# Copyright 2010-2021 by Hartmut Goebel
#
# 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 3 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, see .
#
__author__ = "Hartmut Goebel "
__copyright__ = "Copyright 2010-2021 by Hartmut Goebel "
__licence__ = "GNU General Public License version 3 (GPL v3)"
__all__ = ['Ghostscript', 'revision',
'GhostscriptError', 'PleaseDisplayUsage']
import sys # :todo: remove, debugging only
from . import _gsprint as gs
__version__ = gs.__version__
GhostscriptError = gs.GhostscriptError
class PleaseDisplayUsage(Warning):
"""
This exception is raised when Ghostscript asks the application to
display the usage. The application should catch the exception an
print the usage message.
"""
pass
def revision():
"""
This function returns the revision numbers and strings of the
Ghostscript interpreter library as a dict. You should call it
before any other interpreter library functions to make sure that
the correct version of the Ghostscript interpreter has been
loaded.
"""
rev = gs.revision()
# we assume that the underlying function returns utf-8 strings
return {
"product": rev.product.decode('utf-8'),
"copyright": rev.copyright.decode('utf-8'),
"revision": rev.revision,
"revisiondate": rev.revisiondate
}
MAX_STRING_LENGTH = gs.MAX_STRING_LENGTH
class Ghostscript(object):
@staticmethod
def revision():
return revision()
def __init__(self, *args, stdin=None, stdout=None, stderr=None):
assert self.revision()['revision'] >= 908, \
"high-level interface requires ghostscript >= 9.08"
self._callbacks = None
self._instance = gs.new_instance()
if not isinstance(args[0], str):
import warnings
warnings.warn(
"Passing bytes-arguments to 'Ghostscript()' is deprecated",
DeprecationWarning, stacklevel=2)
else:
gs.set_arg_encoding(self._instance, gs.ARG_ENCODING_UTF8)
args = [a.encode('utf-8') for a in args]
try:
self.set_stdio(stdin, stdout, stderr)
rc = gs.init_with_args(self._instance, args)
if rc == gs.e_Info:
raise PleaseDisplayUsage()
if rc == gs.e_Quit:
self.exit()
except:
self.exit()
raise
def __enter__(self):
return self
def __exit__(self, *args):
self.exit()
def set_stdio(self, stdin=None, stdout=None, stderr=None):
"""Set stdin, stdout and stderr of the ghostscript interpreter.
The ``stdin`` stream has to support the ``readline()``
interface. The ``stdout`` and ``stderr`` streams have to
support the ``write()`` and ``flush()`` interface.
Please note that this does not affect the input- and output-
streams of the devices. Esp. setting stdout does not allow
catching the devise-output even when using ``-sOutputFile=-``.
"""
if not stdin and not stdout and not stderr:
return
self._callbacks = (
stdin and gs._wrap_stdin(stdin) or None,
stdout and gs._wrap_stdout(stdout) or None,
stderr and gs._wrap_stderr(stderr) or None,
)
gs.set_stdio(self._instance, *self._callbacks)
def __del__(self):
self.exit()
def exit(self):
if self._instance:
try:
gs.exit(self._instance)
gs.delete_instance(self._instance)
finally:
self._instance = None
def run_string(self, str, user_errors=False):
"""
Run the string ``str`` by Ghostscript
This takes care of Ghostscripts size-limitations and passes
the string in pieces if necessary.
"""
instance = self._instance
if len(str) < MAX_STRING_LENGTH:
gs.run_string(instance, str)
else:
gs.run_string_begin(instance)
for start in range(0, len(str), MAX_STRING_LENGTH):
gs.run_string_continue(instance,
str[start:start+MAX_STRING_LENGTH])
gs.run_string_end(instance)
def run_filename(self, filename, user_errors=False):
"""
Run the file named by ``filename`` by Ghostscript
"""
return gs.run_file(self._instance, filename, user_errors)
def run_file(self, file, user_errors=False):
"""
Read ``file`` and run the content by Ghostscript.
``file`` must already by opened and may by any file-like
object supporting the ``read()`` method.
"""
instance = self._instance
gs.run_string_begin(instance)
while True:
str = file.read(MAX_STRING_LENGTH)
if not str:
break
gs.run_string_continue(instance, str)
gs.run_string_end(instance)
def cleanup():
pass
python-ghostscript-0.7/ghostscript/_errors.py 0000664 0000000 0000000 00000012235 14020722705 0021650 0 ustar 00root root 0000000 0000000 """
Definition of Ghostscript error codes
"""
#
# This file is part of python-ghostscript.
# Copyright (C) 2010-2018 by Hartmut Goebel
#
# Based on iapi.h which is
# Copyright (C) 1989, 1995, 1998, 1999 Aladdin Enterprises. All rights reserved.
#
# 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 3 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, see .
#
__author__ = "Hartmut Goebel "
__copyright__ = "Copyright 2010-2021 by Hartmut Goebel "
__licence__ = "GNU General Public License version 3 (GPL v3)"
#
# A procedure that may return an error always returns
# a non-negative value (zero, unless otherwise noted) for success,
# or negative for failure.
# We use ints rather than an enum to avoid a lot of casting.
#
# ------ PostScript Level 1 errors ------
e_unknownerror = -1 # unknown error
e_dictfull = -2
e_dictstackoverflow = -3
e_dictstackunderflow = -4
e_execstackoverflow = -5
e_interrupt = -6
# We also need to define gs_error_interrupt, for gpcheck.h
gs_error_interrupt = e_interrupt
e_invalidaccess = -7
e_invalidexit = -8
e_invalidfileaccess = -9
e_invalidfont = -10
e_invalidrestore = -11
e_ioerror = -12
e_limitcheck = -13
e_nocurrentpoint = -14
e_rangecheck = -15
e_stackoverflow = -16
e_stackunderflow = -17
e_syntaxerror = -18
e_timeout = -19
e_typecheck = -20
e_undefined = -21
e_undefinedfilename = -22
e_undefinedresult = -23
e_unmatchedmark = -24
e_VMerror = -25
LEVEL1_ERROR_NAMES = ["unknownerror", "dictfull", "dictstackoverflow",
"dictstackunderflow", "execstackoverflow",
"interrupt", "invalidaccess", "invalidexit",
"invalidfileaccess", "invalidfont",
"invalidrestore", "ioerror", "limitcheck",
"nocurrentpoint", "rangecheck", "stackoverflow",
"stackunderflow", "syntaxerror", "timeout",
"typecheck", "undefined", "undefinedfilename",
"undefinedresult", "unmatchedmark", "VMerror"]
# ------ Additional Level 2 and DPS errors ------
e_configurationerror = -26
e_invalidcontext = -27
e_undefinedresource = -28
e_unregistered = -29
# invalidid is for the NeXT DPS extension.
e_invalidid = -30
LEVEL2_ERROR_NAMES = ["configurationerror", "invalidcontext",
"undefinedresource", "unregistered",
"invalidid"]
ERROR_NAMES = LEVEL1_ERROR_NAMES + LEVEL2_ERROR_NAMES
_PSEUDO_ERRORS = ['Fatal', 'Quit', 'InterpreterExit', 'RemapColor',
'ExecStackUnderflow', 'VMreclaim', 'NeedInput',
'NeedStdin', 'NeedStdout', 'NeedStderr', 'Info']
def error2name(ecode):
if ecode <= e_Fatal:
return _PSEUDO_ERRORS[-ecode-100]
else:
return ERROR_NAMES[-ecode-1]
# ------ Pseudo-errors used internally ------
#
# Internal code for a fatal error.
# gs_interpret also returns this for a .quit with a positive exit code.
#
e_Fatal = -100
#
# Internal code for the .quit operator.
# The real quit code is an integer on the operand stack.
# gs_interpret returns this only for a .quit with a zero exit code.
#
e_Quit = -101
#
# Internal code for a normal exit from the interpreter.
# Do not use outside of interp.c.
#
e_InterpreterExit = -102
#
# Internal code that indicates that a procedure has been stored in the
# remap_proc of the graphics state, and should be called before retrying
# the current token. This is used for color remapping involving a call
# back into the interpreter -- inelegant, but effective.
#
e_RemapColor = -103
#
# Internal code to indicate we have underflowed the top block
# of the e-stack.
#
e_ExecStackUnderflow = -104
#
# Internal code for the vmreclaim operator with a positive operand.
# We need to handle this as an error because otherwise the interpreter
# won't reload enough of its state when the operator returns.
#
e_VMreclaim = -105
#
# Internal code for requesting more input from run_string.
#
e_NeedInput = -106
#
# Internal code for stdin callout.
#
e_NeedStdin = -107
#
# Internal code for stdout callout.
#
e_NeedStdout = -108
#
# Internal code for stderr callout.
#
e_NeedStderr = -109
#
# Internal code for a normal exit when usage info is displayed.
# This allows Window versions of Ghostscript to pause until
# the message can be read.
#
e_Info = -110
#
# Define which error codes require re-executing the current object.
#
def ERROR_IS_INTERRUPT(ecode):
return ecode == e_interrupt or ecode == e_timeout
if __name__ == '__main__':
print(error2name(e_unknownerror) == "unknownerror")
print(error2name(e_VMerror) == "VMerror")
print(error2name(e_invalidid) == "invalidid")
print(error2name(e_VMreclaim) == "VMreclaim")
python-ghostscript-0.7/ghostscript/_gsprint.py 0000664 0000000 0000000 00000042252 14020722705 0022024 0 ustar 00root root 0000000 0000000 #!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
ghostscript._gsprint - A low-lewel interface to the Ghostscript C-API using ctypes
"""
#
# This file is part of python-ghostscript.
# Copyright 2010-2021 by Hartmut Goebel
#
# Display_callback Structure by Lasse Fister in 2013
#
# 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 3 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, see .
#
__author__ = "Hartmut Goebel "
__copyright__ = "Copyright 2010-2021 by Hartmut Goebel "
__licence__ = "GNU General Public License version 3 (GPL v3)"
__version__ = "0.7"
from ctypes import *
import sys
from ._errors import *
MAX_STRING_LENGTH = 65535
ARG_ENCODING_LOCAL = 0
ARG_ENCODING_UTF8 = 1
ARG_ENCODING_UTF16LE = 2
DISPLAY_VERSION_MAJOR = 2
DISPLAY_VERSION_MINOR = 0
DISPLAY_VERSION_MAJOR_V1 = 1 # before separation format was added
DISPLAY_VERSION_MINOR_V1 = 0
# The display format is set by a combination of the following bitfields
# Define the color space alternatives
# DISPLAY_FORMAT_COLOR
DISPLAY_COLORS_NATIVE = (1<<0)
DISPLAY_COLORS_GRAY = (1<<1)
DISPLAY_COLORS_RGB = (1<<2)
DISPLAY_COLORS_CMYK = (1<<3)
DISPLAY_COLORS_SEPARATION = (1<<19)
DISPLAY_COLORS_MASK = 0x8000f
# Define whether alpha information, or an extra unused bytes is included
# DISPLAY_ALPHA_FIRST and DISPLAY_ALPHA_LAST are not implemented
# DISPLAY_FORMAT_ALPHA
DISPLAY_ALPHA_NONE = (0<<4)
DISPLAY_ALPHA_FIRST = (1<<4)
DISPLAY_ALPHA_LAST = (1<<5)
DISPLAY_UNUSED_FIRST = (1<<6) # e.g. Mac xRGB
DISPLAY_UNUSED_LAST = (1<<7) # e.g. Windows BGRx
DISPLAY_ALPHA_MASK = 0x00f0
# Define the depth per component for DISPLAY_COLORS_GRAY,
# DISPLAY_COLORS_RGB and DISPLAY_COLORS_CMYK,
# or the depth per pixel for DISPLAY_COLORS_NATIVE
# DISPLAY_DEPTH_2 and DISPLAY_DEPTH_12 have not been tested.
# DISPLAY_FORMAT_DEPTH
DISPLAY_DEPTH_1 = (1<< 8)
DISPLAY_DEPTH_2 = (1<< 9)
DISPLAY_DEPTH_4 = (1<<10)
DISPLAY_DEPTH_8 = (1<<11)
DISPLAY_DEPTH_12 = (1<<12)
DISPLAY_DEPTH_16 = (1<<13)
# unused (1<<14)
# unused (1<<15)
DISPLAY_DEPTH_MASK = 0xff00
# Define whether Red/Cyan should come first,
# or whether Blue/Black should come first
# DISPLAY_FORMAT_ENDIAN
DISPLAY_BIGENDIAN = (0<<16) # Red/Cyan first
DISPLAY_LITTLEENDIAN = (1<<16) # Blue/Black first
DISPLAY_ENDIAN_MASK = 0x00010000
# Define whether the raster starts at the top or bottom of the bitmap
# DISPLAY_FORMAT_FIRSTROW
DISPLAY_TOPFIRST = (0<<17) # Unix, Mac
DISPLAY_BOTTOMFIRST = (1<<17) # Windows
DISPLAY_FIRSTROW_MASK = 0x00020000
# Define whether packing RGB in 16-bits should use 555
# or 565 (extra bit for green)
# DISPLAY_FORMAT_555
DISPLAY_NATIVE_555 = (0<<18)
DISPLAY_NATIVE_565 = (1<<18)
DISPLAY_555_MASK = 0x00040000
# Define the row alignment, which must be equal to or greater than
# the size of a pointer.
# The default (DISPLAY_ROW_ALIGN_DEFAULT) is the size of a pointer,
# 4 bytes (DISPLAY_ROW_ALIGN_4) on 32-bit systems or 8 bytes
# (DISPLAY_ROW_ALIGN_8) on 64-bit systems.
# DISPLAY_FORMAT_ROW_ALIGN
DISPLAY_ROW_ALIGN_DEFAULT = (0<<20)
# DISPLAY_ROW_ALIGN_1 = (1<<20), # not currently possible
# DISPLAY_ROW_ALIGN_2 = (2<<20), # not currently possible
DISPLAY_ROW_ALIGN_4 = (3<<20)
DISPLAY_ROW_ALIGN_8 = (4<<20)
DISPLAY_ROW_ALIGN_16 = (5<<20)
DISPLAY_ROW_ALIGN_32 = (6<<20)
DISPLAY_ROW_ALIGN_64 = (7<<20)
DISPLAY_ROW_ALIGN_MASK = 0x00700000
class Revision(Structure):
_fields_ = [
("product", c_char_p),
("copyright", c_char_p),
("revision", c_long),
("revisiondate", c_long)
]
gs_main_instance = c_void_p
display_callback = c_void_p
class GhostscriptError(Exception):
def __init__(self, ecode):
# :todo:
Exception.__init__(self, error2name(ecode))
self.code = ecode
def revision():
"""
Get version numbers and strings.
This is safe to call at any time.
You should call this first to make sure that the correct version
of the Ghostscript is being used.
Returns a Revision instance
"""
revision = Revision()
rc = libgs.gsapi_revision(pointer(revision), sizeof(revision))
if rc:
raise ArgumentError("Revision structure size is incorrect, "
"requires %s bytes" % rc)
return revision
def new_instance(): # display_callback=None):
"""
Create a new instance of Ghostscript
This instance is passed to most other API functions.
"""
# :todo: The caller_handle will be provided to callback functions.
display_callback=None
instance = gs_main_instance()
rc = libgs.gsapi_new_instance(pointer(instance), display_callback)
if rc != 0:
raise GhostscriptError(rc)
return instance
def delete_instance(instance):
"""
Destroy an instance of Ghostscript
Before you call this, Ghostscript must have finished.
If Ghostscript has been initialised, you must call exit()
before delete_instance()
"""
return libgs.gsapi_delete_instance(instance)
c_stdstream_call_t = CFUNCTYPE(c_int, gs_main_instance, POINTER(c_char), c_int)
def _wrap_stdin(infp):
"""
Wrap a filehandle into a C function to be used as `stdin` callback
for ``set_stdio``. The filehandle has to support the readline() method.
"""
def _wrap(instance, dest, count):
try:
data = infp.readline(count)
except:
count = -1
else:
if not data:
count = 0
else:
count = len(data)
memmove(dest, c_char_p(data), count)
return count
return c_stdstream_call_t(_wrap)
def _wrap_stdout(outfp):
"""
Wrap a filehandle into a C function to be used as `stdout` or
`stderr` callback for ``set_stdio``. The filehandle has to support the
write() and flush() methods.
"""
def _wrap(instance, str, count):
outfp.write(str[:count])
outfp.flush()
return count
return c_stdstream_call_t(_wrap)
_wrap_stderr = _wrap_stdout
def set_stdio(instance, stdin, stdout, stderr):
"""
Set the callback functions for stdio.
``stdin``, ``stdout`` and ``stderr`` have to be ``ctypes``
callback functions matching the ``_gsprint.c_stdstream_call_t``
prototype. You may want to use _wrap_* to wrap file handles.
Note 1: This function only changes stdio of the Postscript
interpreter, not that of the devices.
Note 2: Make sure you keep references to C function objects
as long as they are used from C code. Otherwise they may be
garbage collected, crashing your program when a callback is made.
The ``stdin`` callback function should return the number of
characters read, `0` for EOF, or `-1` for error. The `stdout` and
`stderr` callback functions should return the number of characters
written.
You may pass ``None`` for any of stdin, stdout or stderr , in which
case the system stdin, stdout resp. stderr will be used.
"""
rc = libgs.gsapi_set_stdio(instance, stdin, stdout, stderr)
if rc not in (0, e_Quit, e_Info):
raise GhostscriptError(rc)
return rc
# :todo: set_poll (instance, int(*poll_fn)(void *caller_handle));
# :todo: set_display_callback(instance, callback):
def set_arg_encoding(instance, encoding):
assert encoding in (
ARG_ENCODING_LOCAL,
ARG_ENCODING_UTF8,
ARG_ENCODING_UTF16LE,
)
rc = libgs.gsapi_set_arg_encoding(instance, c_int(encoding))
if rc < 0:
raise GhostscriptError(rc)
return rc
def init_with_args(instance, argv):
"""
Initialise the interpreter.
1. If quit or EOF occur during init_with_args(), the return value
will be e_Quit. This is not an error. You must call exit() and
must not call any other functions.
2. If usage info should be displayed, the return value will be
e_Info which is not an error. Do not call exit().
3. Under normal conditions this returns 0. You would then call one
or more run_*() functions and then finish with exit()
"""
ArgArray = c_char_p * len(argv)
c_argv = ArgArray(*argv)
rc = libgs.gsapi_init_with_args(instance, len(argv), c_argv)
if rc not in (0, e_Quit, e_Info):
raise GhostscriptError(rc)
return rc
def exit(instance):
"""
Exit the interpreter
This must be called on shutdown if init_with_args() has been
called, and just before delete_instance()
"""
rc = libgs.gsapi_exit(instance)
if rc != 0:
raise GhostscriptError(rc)
return rc
def run_string_begin(instance, user_errors=False):
exit_code = c_int()
rc = libgs.gsapi_run_string_begin(instance, c_int(user_errors),
pointer(exit_code))
if rc != 0:
raise GhostscriptError(rc)
return exit_code.value
def run_string_continue(instance, str, user_errors=False):
exit_code = c_int()
rc = libgs.gsapi_run_string_continue(
instance, c_char_p(str), c_int(len(str)),
c_int(user_errors), pointer(exit_code))
if rc != e_NeedInput and rc != 0:
raise GhostscriptError(rc)
return exit_code.value
def run_string_end(instance, user_errors=False):
exit_code = c_int()
rc = libgs.gsapi_run_string_end(instance, c_int(user_errors),
pointer(exit_code))
if rc != 0:
raise GhostscriptError(rc)
return exit_code.value
def run_string_with_length(*args, **kw):
raise NotImpelmentedError('Use run_string() instead')
def run_string(instance, str, user_errors=False):
exit_code = c_int()
rc = libgs.gsapi_run_string_with_length(
instance, c_char_p(str), c_int(len(str)),
c_int(user_errors), pointer(exit_code))
if rc != 0:
raise GhostscriptError(rc)
return exit_code.value
def run_file(instance, filename, user_errors=False):
exit_code = c_int()
rc = libgs.gsapi_run_file(instance, c_char_p(filename),
c_int(user_errors), pointer(exit_code))
if rc != 0:
raise GhostscriptError(rc)
return exit_code.value
def set_visual_tracer(I):
raise NotImplementedError
# New device has been opened
# This is the first event from this device.
# int (*display_open)(void *handle, void *device);
c_display_open = CFUNCTYPE(c_int, c_void_p, c_void_p)
# Device is about to be closed.
# Device will not be closed until this function returns.
#int (*display_preclose)(void *handle, void *device);
c_display_preclose = CFUNCTYPE(c_int, c_void_p, c_void_p)
# Device has been closed.
# This is the last event from this device.
# int (*display_close)(void *handle, void *device);
c_display_close = CFUNCTYPE(c_int, c_void_p, c_void_p)
# Device is about to be resized.
# Resize will only occur if this function returns 0.
# raster is byte count of a row.
# int (*display_presize)(void *handle, void *device,
# int width, int height, int raster, unsigned int format);
c_display_presize = CFUNCTYPE(c_int, c_void_p, c_void_p,
c_int, c_int, c_int, c_uint)
# Device has been resized.
# New pointer to raster returned in pimage
# int (*display_size)(void *handle, void *device, int width, int height,
# int raster, unsigned int format, unsigned char *pimage);
c_display_size = CFUNCTYPE(c_int, c_void_p, c_void_p,
c_int, c_int, c_int, c_uint, POINTER(c_ubyte))
# flushpage
#int (*display_sync)(void *handle, void *device);
c_display_sync = CFUNCTYPE(c_int, c_void_p, c_void_p)
# showpage
# If you want to pause on showpage, then don't return immediately
# int (*display_page)(void *handle, void *device, int copies, int flush);
c_display_page = CFUNCTYPE(c_int, c_void_p, c_void_p,
c_int, c_int)
# Notify the caller whenever a portion of the raster is updated.
# This can be used for cooperative multitasking or for
# progressive update of the display.
# This function pointer may be set to NULL if not required.
# int (*display_update)(void *handle, void *device, int x, int y,
# int w, int h);
c_display_update = CFUNCTYPE(c_int, c_void_p, c_void_p,
c_int, c_int, c_int, c_int)
# Allocate memory for bitmap
# This is provided in case you need to create memory in a special
# way, e.g. shared. If this is NULL, the Ghostscript memory device
# allocates the bitmap. This will only called to allocate the
# image buffer. The first row will be placed at the address
# returned by display_memalloc.
# void *(*display_memalloc)(void *handle, void *device, unsigned long size);
c_display_memalloc = CFUNCTYPE(c_void_p, c_void_p, c_void_p, c_ulong)
# Free memory for bitmap
# If this is NULL, the Ghostscript memory device will free the bitmap
# int (*display_memfree)(void *handle, void *device, void *mem);
c_display_memfree = CFUNCTYPE(c_int, c_void_p, c_void_p, c_void_p)
# Added in V2 */
# When using separation color space (DISPLAY_COLORS_SEPARATION),
# give a mapping for one separation component.
# This is called for each new component found.
# It may be called multiple times for each component.
# It may be called at any time between display_size
# and display_close.
# The client uses this to map from the separations to CMYK
# and hence to RGB for display.
# GS must only use this callback if version_major >= 2.
# The unsigned short c,m,y,k values are 65535 = 1.0.
# This function pointer may be set to NULL if not required.
#
# int (*display_separation)(void *handle, void *device,
# int component, const char *component_name,
# unsigned short c, unsigned short m,
# unsigned short y, unsigned short k);
c_display_separation = CFUNCTYPE(c_int, c_void_p, c_void_p,
c_int, c_char_p, c_ushort, c_ushort, c_ushort, c_ushort)
class Display_callback_s (Structure):
_fields_ = [
# Size of this structure
# Used for checking if we have been handed a valid structure
# int size;
("size", c_int),
# Major version of this structure
# The major version number will change if this structure changes.
# int version_major;
("version_major", c_int),
# Minor version of this structure
# The minor version number will change if new features are added
# without changes to this structure. For example, a new color
# format.
#int version_minor;
("version_minor", c_int),
("display_open", c_display_open),
("display_preclose", c_display_preclose),
("display_close", c_display_close),
("display_presize", c_display_presize),
("display_size", c_display_size),
("display_sync", c_display_sync),
("display_page", c_display_page),
("display_update", c_display_update),
("display_memalloc", c_display_memalloc),
("display_memfree", c_display_memfree),
("display_separation", c_display_separation)
]
def set_display_callback(instance, callback):
rc = libgs.gsapi_set_display_callback(instance, callback)
if rc != 0:
raise GhostscriptError(rc)
return rc
def __win32_finddll():
try:
import winreg
except ImportError:
# assume Python 2
from _winreg import OpenKey, CloseKey, EnumKey, QueryValueEx, \
QueryInfoKey, HKEY_LOCAL_MACHINE
else:
from winreg import OpenKey, CloseKey, EnumKey, QueryValueEx, \
QueryInfoKey, HKEY_LOCAL_MACHINE
from distutils.version import LooseVersion
import os
dlls = []
# Look up different variants of Ghostscript and take the highest
# version for which the DLL is to be found in the filesystem.
for key_name in ('AFPL Ghostscript', 'Aladdin Ghostscript',
'GPL Ghostscript', 'GNU Ghostscript'):
try:
k1 = OpenKey(HKEY_LOCAL_MACHINE, "Software\\%s" % key_name)
for num in range(0, QueryInfoKey(k1)[0]):
version = EnumKey(k1, num)
try:
k2 = OpenKey(k1, version)
dll_path = QueryValueEx(k2, 'GS_DLL')[0]
CloseKey(k2)
if os.path.exists(dll_path):
dlls.append((LooseVersion(version), dll_path))
except WindowsError:
pass
CloseKey(k1)
except WindowsError:
pass
if dlls:
dlls.sort()
return dlls[-1][-1]
else:
return None
if sys.platform == 'win32':
libgs = __win32_finddll()
if not libgs:
raise RuntimeError('Can not find Ghostscript DLL in registry')
libgs = windll.LoadLibrary(libgs)
else:
try:
libgs = cdll.LoadLibrary("libgs.so")
except OSError:
# shared object file not found
import ctypes.util
libgs = ctypes.util.find_library('gs')
if not libgs:
raise RuntimeError('Can not find Ghostscript library (libgs)')
libgs = cdll.LoadLibrary(libgs)
del __win32_finddll
python-ghostscript-0.7/projectlogo.svg 0000664 0000000 0000000 00000046432 14020722705 0020330 0 ustar 00root root 0000000 0000000
python-ghostscript-0.7/requirements.txt 0000664 0000000 0000000 00000000045 14020722705 0020532 0 ustar 00root root 0000000 0000000 setuptools >= 38.6.0
wheel
tox
twine
python-ghostscript-0.7/setup.cfg 0000664 0000000 0000000 00000003263 14020722705 0017074 0 ustar 00root root 0000000 0000000 [sdist]
formats=gztar
[bdist]
formats=egg
[bdist_wheel]
universal=1
[zest.releaser]
python-file-with-version = ghostscript/_gsprint.py
push-changes = no
tag-format = v{version}
tag-message = python-ghostscript {version}
tag-signing = yes
create-wheel = yes
releaser.before_upload =
_zest_release_hooks.sign_release
_zest_release_hooks.run_twine_check
_zest_release_hooks.safe_dist_files
[metadata]
name = ghostscript
version = attr:ghostscript.__version__
author = Hartmut Goebel
author_email = h.goebel@crazy-compilers.com
description = Interface to the Ghostscript C-API, both high- and low-level, based on ctypes
long_description = file:README.rst
long_description_content_type = text/x-rst
keywords = Ghostscript, PDF, Postscript
url = https://gitlab.com/pdftools/python-ghostscript
download_url = http://pypi.python.org/pypi/ghostscript
license = GNU General Public License v3 or later (GPLv3+)
classifiers =
Development Status :: 5 - Production/Stable
Intended Audience :: Developers
License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)
Natural Language :: English
Operating System :: OS Independent
Programming Language :: Python
Programming Language :: Python :: 3
Programming Language :: Python :: 3.6
Programming Language :: Python :: 3.7
Programming Language :: Python :: 3.8
Programming Language :: Python :: 3.9
Topic :: Software Development :: Libraries :: Python Modules
[options]
packages = find:
zip_safe = True
install_requires =
setuptools >= 38.6.0
[options.packages.find]
exclude = tests
[options.package_data]
# If any package contains *.txt or *.rst files, include them:
* = *.txt, *.rst
python-ghostscript-0.7/setup.py 0000664 0000000 0000000 00000001572 14020722705 0016766 0 ustar 00root root 0000000 0000000 #!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# This file is part of python-ghostscript.
# Copyright 2010-2021 by Hartmut Goebel
#
# 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 3 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, see .
#
from setuptools import setup
setup(
install_requires = ['setuptools >= 38.6.0']
)
python-ghostscript-0.7/test/ 0000775 0000000 0000000 00000000000 14020722705 0016226 5 ustar 00root root 0000000 0000000 python-ghostscript-0.7/test/hello_world.bmp 0000664 0000000 0000000 00000001126 14020722705 0021240 0 ustar 00root root 0000000 0000000 BMV v ( P à ÿ ÿ ÿÿ ÿ ÿ ÿ ÿÿ ÿÿÿ ÿ ÿ ÿÿ ÿ ÿ ÿ ÿÿ ÿÿÿ ðÿÿðÿ ÿðÿ ÿÿÿðÿðÿð ÿÿ ÿÿÿÿÿÿÿÿÿðÿÿðÿÿðÿÿÿÿðÿ ÿðÿðÿÿÿÿÿÿÿÿÿÿÿÿðÿÿðÿÿÿððÿÿÿðÿ ÿðÿÿ ÿÿÿÿÿÿÿÿÿÿÿðÿÿðÿ ððÿÿÿÿððÿÿðÿÿ ÿÿÿÿÿÿÿÿÿÿÿð ÿÿðÿÿÿÿððÿðÿðÿÿÿÿÿÿÿÿÿÿÿÿðÿÿðÿ ÿðÿ ÿÿÿððÿð ÿ ÿÿÿÿÿÿÿÿÿðÿÿðÿÿÿÿðÿÿÿÿÿÿððÿ ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿðÿÿðÿÿÿÿðÿÿÿÿÿÿÿ ÿðÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿðÿÿðÿÿÿÿðÿÿÿÿÿðÿÿðÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ python-ghostscript-0.7/test/test_highlevel.py 0000664 0000000 0000000 00000015736 14020722705 0021622 0 ustar 00root root 0000000 0000000 # -*- coding: utf-8 -*-
#
# This file is part of python-ghostscript.
# Copyright 2010-2021 by Hartmut Goebel
#
# 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 3 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, see .
#
__author__ = "Hartmut Goebel "
__copyright__ = "Copyright 2010-2021 by Hartmut Goebel "
__licence__ = "GNU General Public License version 3 (GPL v3)"
import io
import sys, os
import locale # required to encode file paths
import binascii
import warnings
import py, pytest
import ghostscript as gslib
postscript_img = b"""
/Helvetica findfont 12 scalefont setfont
0 0 moveto
(Hello World) show
showpage
"""
HELLO_WORLD = ''.join(('%x' % ord(c) for c in 'Hello World'))
postscript_doc = ('<%s> = flush' % HELLO_WORLD).encode('ascii')
STDARGS = ['test.py', '-dNOPAUSE', '-dBATCH', '-dSAFER', '-q',
'-sDEVICE=bmp16', '-g80x12']
TEST_PIC_FILENAME = os.path.join(os.path.dirname(__file__), 'hello_world.bmp')
TEST_PIC_DATA = py.path.local(TEST_PIC_FILENAME).read('rb')
# Ensure the instanse is removed after all high-level tests have been
# done. Otherwise low-level tests will fail if run afterwards.
@pytest.fixture(scope='module')
def instance(request):
def fin():
gslib.cleanup()
request.addfinalizer(fin)
def test_revision_func(instance):
rev = gslib.revision()
assert type(rev) is dict
assert type(rev['copyright']) is str
assert type(rev['product']) is str
assert type(rev['revision']) is int
assert type(rev['revisiondate']) is int
assert 'Copyright' in rev['copyright']
assert 'ghostscript' in rev['product'].lower()
assert rev['revisiondate'] > 19900101
assert rev['revision'] > 700
def test_revision_instance(instance):
with gslib.Ghostscript('-dBATCH', '-q') as gs:
rev1 = gs.revision()
rev2 = gslib.revision()
assert rev1 == rev2
def test_simple(instance, tmpdir):
"""Let ghostscript read from a file and write to a file"""
infile = tmpdir.join('in.ps')
infile.write(postscript_img)
outfile = tmpdir.join('out.bmp')
# Using a context with an empty body looks not like good code, So
# do not use a ``with``-stmt.
gs = gslib.Ghostscript(*STDARGS, '-sOutputFile=%s' % outfile, str(infile))
gs.exit()
data = outfile.read('rb')
assert data == TEST_PIC_DATA
def test_unicode_arguments(instance, tmpdir):
"""Let ghostscript read from a file and write to a file"""
infile = tmpdir.join('in-äöü.ps')
infile.write(postscript_img)
outfile = tmpdir.join('outäöü.bmp')
gs = gslib.Ghostscript(*STDARGS, '-sOutputFile=%s' % outfile, str(infile))
gs.exit()
data = outfile.read('rb')
assert data == TEST_PIC_DATA
def test_run_string_empty(instance, tmpdir):
"""Let ghostscript read from a file and write to a file"""
infile = tmpdir.join('in.ps')
infile.write(postscript_img)
outfile = tmpdir.join('out.bmp')
with gslib.Ghostscript(*STDARGS, '-sOutputFile=%s' % outfile) as gs:
gs.run_string(b'')
# It depends on the ghostscript implementation, whether the file
# if created. As of gs 9.14 the file is not created, but this
# could change.
if outfile.exists():
# But if the file exists, it must be empty
data = outfile.read('rb')
assert data == ''
def test_run_string(instance, tmpdir):
"""Let ghostscript read from a file and write to a file"""
outfile = tmpdir.join('out.bmp')
with gslib.Ghostscript(*STDARGS, '-sOutputFile=%s' % outfile) as gs:
gs.run_string(postscript_img)
data = outfile.read('rb')
assert data == TEST_PIC_DATA
def test_stdin(tmpdir):
"""Let ghostscript read from stdin and write to a file"""
outfile = tmpdir.join('out.bmp')
gs = gslib.Ghostscript(*STDARGS, '-sOutputFile=%s' % outfile, '-',
stdin=io.BytesIO(postscript_img))
gs.exit()
data = outfile.read('rb')
assert data == TEST_PIC_DATA
def test_stdout(tmpdir):
"""Let ghostscript read from a file and write to stdout"""
infile = tmpdir.join('in.ps')
infile.write(postscript_doc)
stdout = io.BytesIO() # buffer for collecting the output
gs = gslib.Ghostscript(*STDARGS, str(infile), stdout=stdout)
gs.exit()
data = stdout.getvalue()
assert data == b'Hello World\n'
def test_stdin_stdout(tmpdir):
"""Let ghostscript read from stdin and write to stdout"""
stdout = io.BytesIO() # buffer for collecting the output
gs = gslib.Ghostscript(*STDARGS, '-',
stdin=io.BytesIO(postscript_doc),
stdout=stdout)
gs.exit()
data = stdout.getvalue()
assert data == b'Hello World\n'
def test_stderr(tmpdir):
"""
Make ghostscript write some error message to stderr and
keep stdout on the console.
"""
stderr = io.BytesIO() # buffer for collecting stderr
try:
with gslib.Ghostscript(*STDARGS, '-',
stdin=io.BytesIO(b'foobar'),
stderr=stderr):
# this call is expected to fail due to the intended error in
# the postscript code
pass
except gslib.GhostscriptError:
pass
data = stderr.getvalue()
assert b'Unrecoverable error' in data
def test_stdout_stderr(tmpdir):
"""
Make ghostscript write some error message to stderr and
catch stdout, too.
"""
stdout = io.BytesIO() # buffer for collecting the output
stderr = io.BytesIO() # buffer for collecting stderr
try:
with gslib.Ghostscript(*STDARGS, '-',
stdin=io.BytesIO(b'foobar'),
stdout=stdout, stderr=stderr):
# this call is expected to fail due to the intended error in
# the postscript code
pass
except gslib.GhostscriptError:
pass
data = stdout.getvalue()
assert b'Error: /undefined in foobar' in data
data = stderr.getvalue()
assert b'Unrecoverable error' in data
def test_byte_argments_raise_warning(tmpdir):
with warnings.catch_warnings(record=True) as w:
# Cause all warnings to always be triggered
warnings.simplefilter("always")
# Trigger the warning
with gslib.Ghostscript(b'-dBATCH', b'-q') as gs:
pass
assert len(w) == 1
assert issubclass(w[-1].category, DeprecationWarning)
assert "deprecated" in str(w[-1].message)
python-ghostscript-0.7/test/test_lowlevel.py 0000664 0000000 0000000 00000013651 14020722705 0021476 0 ustar 00root root 0000000 0000000 # -*- coding: utf-8 -*-
#
# This file is part of python-ghostscript.
# Copyright 2010-2021 by Hartmut Goebel
#
# 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 3 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, see .
#
__author__ = "Hartmut Goebel "
__copyright__ = "Copyright 2010-2021 by Hartmut Goebel "
__licence__ = "GNU General Public License version 3 (GPL v3)"
import io
import sys, os
import locale # required to encode file paths
import binascii
import py
import ghostscript._gsprint as gs
postscript_img = b"""
/Helvetica findfont 12 scalefont setfont
0 0 moveto
(Hello World) show
showpage
"""
HELLO_WORLD = ''.join(('%x' % ord(c) for c in 'Hello World'))
#HELLO_WORLD = binascii.hexlify('Hello World')
postscript_doc = ('<%s> = flush' % HELLO_WORLD).encode('ascii')
STDARGS = [b'test.py', b'-dNOPAUSE', b'-dBATCH', b'-dSAFER', b'-q',
b'-sDEVICE=bmp16', b'-g80x12']
TEST_PIC_FILENAME = os.path.join(os.path.dirname(__file__), 'hello_world.bmp')
TEST_PIC_DATA = py.path.local(TEST_PIC_FILENAME).read('rb')
def _encode(*args):
encoding = locale.getpreferredencoding()
return [a.encode(encoding) for a in args]
def test_revision():
rev = gs.revision()
assert type(rev.copyright) is bytes
assert type(rev.product) is bytes
assert type(rev.revision) is int
assert type(rev.revisiondate) is int
def test_run_string(tmpdir):
"""Let ghostscript read from a file and write to stdout"""
outfile = tmpdir.join('out.bmp')
args = STDARGS + _encode('-sOutputFile=%s' % outfile)
instance = gs.new_instance()
try:
gs.init_with_args(instance, args)
gs.run_string(instance, postscript_img)
finally:
gs.exit(instance)
gs.delete_instance(instance)
data = outfile.read('rb')
assert data == TEST_PIC_DATA
def test_simple(tmpdir):
"""Let ghostscript read from a file and write to a file"""
infile = tmpdir.join('in.ps')
infile.write(postscript_img)
outfile = tmpdir.join('out.bmp')
args = STDARGS + _encode('-sOutputFile=%s' % outfile, str(infile))
instance = gs.new_instance()
try:
gs.init_with_args(instance, args)
finally:
gs.exit(instance)
gs.delete_instance(instance)
data = outfile.read('rb')
assert data == TEST_PIC_DATA
def _gs_stdio(args, stdin=None, stdout=None, stderr=None):
instance = gs.new_instance()
# wrappers like in
# http://ghostscript.com/doc/8.54/API.htm#Example_usage
if stdin is not None: stdin = gs._wrap_stdin(stdin)
if stdout is not None: stdout = gs._wrap_stdout(stdout)
if stderr is not None: stderr = gs._wrap_stderr(stderr)
gs.set_stdio(instance, stdin, stdout, stderr)
try:
gs.init_with_args(instance, args)
finally:
gs.exit(instance)
gs.delete_instance(instance)
def test_stdin(tmpdir):
"""Let ghostscript read from stdin and write to a file"""
outfile = tmpdir.join('out.bmp')
args = STDARGS + _encode('-sOutputFile=%s' % outfile, '-')
_gs_stdio(args, stdin=io.BytesIO(postscript_img))
data = outfile.read('rb')
assert data == TEST_PIC_DATA
def test_stdout(tmpdir):
"""Let ghostscript read from a file and write to stdout"""
infile = tmpdir.join('in.ps')
infile.write(postscript_doc)
args = STDARGS + _encode(str(infile))
stdout = io.BytesIO() # buffer for collecting the output
_gs_stdio(args, stdout=stdout)
data = stdout.getvalue()
assert data == b'Hello World\n'
def test_stdin_stdout(tmpdir):
"""Let ghostscript read from stdin and write to stdout"""
args = STDARGS + _encode('-')
stdout = io.BytesIO() # buffer for collecting the output
_gs_stdio(args, stdin=io.BytesIO(postscript_doc), stdout=stdout)
data = stdout.getvalue()
assert data == b'Hello World\n'
def test_stderr(tmpdir):
"""
Make ghostscript write some error message to stderr and
keep stdout on the console.
"""
args = STDARGS + _encode('-')
stderr = io.BytesIO() # buffer for collecting stderr
try:
# this call is expected to fail due to the intended error in
# the postscript code
_gs_stdio(args, stdin=io.BytesIO(b'foobar'), stderr=stderr)
except gs.GhostscriptError:
pass
data = stderr.getvalue()
assert b'Unrecoverable error' in data
def test_stdout_stderr(tmpdir):
"""
Make ghostscript write some error message to stderr and
catch stdout, too.
"""
args = STDARGS + _encode('-')
stdout = io.BytesIO() # buffer for collecting the output
stderr = io.BytesIO() # buffer for collecting stderr
try:
# this call is expected to fail due to the intended error in
# the postscript code
_gs_stdio(args,
stdin=io.BytesIO(b'foobar'), stdout=stdout, stderr=stderr)
except gs.GhostscriptError:
pass
data = stdout.getvalue()
assert b'Error: /undefined in foobar' in data
data = stderr.getvalue()
assert b'Unrecoverable error' in data
def generate_test_picture():
"""
Use command line ghostscript to generate the image used in testing
"""
import subprocess
outfile = TEST_PIC_FILENAME
args = ['gs'] + STDARGS[1:] + _encode('-sOutputFile=%s' % outfile, '-')
subprocess.Popen(args).communicate(postscript_doc)
if __name__ == '__main__':
generate_test_picture()
python-ghostscript-0.7/tox.ini 0000664 0000000 0000000 00000002364 14020722705 0016567 0 ustar 00root root 0000000 0000000 [tox]
minversion=2.3.1
envlist = py36,py37,py38,py39,linters
[testenv]
deps =
pytest!=3.0.5
commands =
pytest {posargs}
#---- Documentation ----
[testenv:docs]
basepython = python3
deps =
-rdocs/source/requirements.txt
commands =
sphinx-build -E -W -c docs/source/ -b html docs/source/ docs/build/html
sphinx-build -E -W -c docs/source/ -b man docs/source/ docs/build/man
[testenv:serve-docs]
basepython = python3
skip_install = true
changedir = docs/build/html
deps =
commands =
python -m http.server {posargs}
#---- Linters ----
[testenv:readme]
basepython = python3
deps =
setuptools >= 38.6.0
wheel
twine
commands =
python setup.py -q sdist bdist_wheel
twine check dist/*
[testenv:linters]
basepython = python3
skip_install = true
deps =
{[testenv:readme]deps}
commands =
{[testenv:readme]commands}
#---- Release tooling ----
[testenv:build]
basepython = python3
skip_install = true
deps =
setuptools >= 38.6.0
wheel
twine
commands =
python setup.py -q sdist bdist_wheel
twine check dist/*
[testenv:release]
basepython = python3
skip_install = true
deps =
{[testenv:build]deps}
twine >= 1.5.0
commands =
{[testenv:build]commands}
twine upload --skip-existing dist/*