1 files changed, 147 insertions, 0 deletions
diff --git a/share/extensions/image_embed.py b/share/extensions/image_embed.py
new file mode 100755
index 0000000..e04bc85
--- /dev/null
+++ b/share/extensions/image_embed.py
@@ -0,0 +1,147 @@
+#!/usr/bin/env python
+# coding=utf-8
+#
+# Copyright (C) 2005,2007 Aaron Spike, aaron@ekips.org
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
+# pylint: disable=ungrouped-imports
+"""
+Embed images so they are base64 encoded data inside the svg.
+"""
+
+from __future__ import unicode_literals
+
+import os
+
+import inkex
+from inkex import Image
+from inkex.localization import inkex_gettext as _
+
+try:
+    import urllib.request as urllib
+    import urllib.parse as urlparse
+    from base64 import encodebytes
+except ImportError:
+    # python2 compatibility, remove when python3 only.
+    import urllib
+    import urlparse
+    from base64 import encodestring as encodebytes
+
+
+class EmbedImage(inkex.EffectExtension):
+    """Allow selected image tags to become embeded image tags"""
+
+    def add_arguments(self, pars):
+        pars.add_argument(
+            "--selectedonly", type=inkex.Boolean, help="embed only selected images"
+        )
+
+    def effect(self):
+        # if slectedonly is enabled and there is a selection
+        # only embed selected images. otherwise embed all images
+        if self.options.selectedonly:
+            images = self.svg.selection.get(Image)
+        else:
+            images = self.svg.xpath("//svg:image")
+
+        for node in images:
+            self.embed_image(node)
+
+    def embed_image(self, node):
+        """Embed the data of the selected Image Tag element"""
+        xlink = node.get("xlink:href")
+        if xlink is not None and xlink[:5] == "data:":
+            # No need, data already embedded
+            return
+        if xlink is None:
+            inkex.errormsg(
+                _('Attribute "xlink:href" not set on node {}.'.format(node.get_id()))
+            )
+            return
+
+        url = urlparse.urlparse(xlink)
+        href = urllib.url2pathname(url.path)
+
+        # Look relative to the *temporary* filename instead of the original filename.
+        try:
+            cwd = os.path.dirname(self.options.input_file)
+        except TypeError:
+            # input_file was actually stdin, fall back.
+            cwd = None
+
+        path = self.absolute_href(href or "", cwd=cwd)
+
+        # Backup directory where we can find the image
+        if not os.path.isfile(path):
+            path = node.get("sodipodi:absref", path)
+
+        if not os.path.isfile(path):
+            inkex.errormsg(
+                _('File not found "{}". Unable to embed image.').format(path)
+            )
+            return
+
+        with open(path, "rb") as handle:
+            # Don't read the whole file to check the header
+            file_type = get_type(path, handle.read(10))
+            handle.seek(0)
+
+            if file_type:
+                # Future: Change encodestring to encodebytes when python3 only
+                node.set(
+                    "xlink:href",
+                    "data:{};base64,{}".format(
+                        file_type, encodebytes(handle.read()).decode("ascii")
+                    ),
+                )
+                node.pop("sodipodi:absref")
+            else:
+                inkex.errormsg(
+                    _(
+                        "%s is not of type image/png, image/jpeg, "
+                        "image/bmp, image/gif, image/tiff, or image/x-icon"
+                    )
+                    % path
+                )
+
+
+def get_type(path, header):
+    """Basic magic header checker, returns mime type"""
+    for head, mime in (
+        (b"\x89PNG", "image/png"),
+        (b"\xff\xd8", "image/jpeg"),
+        (b"BM", "image/bmp"),
+        (b"GIF87a", "image/gif"),
+        (b"GIF89a", "image/gif"),
+        (b"MM\x00\x2a", "image/tiff"),
+        (b"II\x2a\x00", "image/tiff"),
+    ):
+        if header.startswith(head):
+            return mime
+
+    # ico files lack any magic... therefore we check the filename instead
+    for ext, mime in (
+        # official IANA registered MIME is 'image/vnd.microsoft.icon' tho
+        (".ico", "image/x-icon"),
+        (".svg", "image/svg+xml"),
+    ):
+        if path.endswith(ext):
+            return mime
+    return None
+
+
+if __name__ == "__main__":
+    EmbedImage().run()