# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1555106911 -7200
# Node ID f5e5c9da103efa080a0f6d58abb8924ffc36b591
# Parent  90e7ce5b6cefb8c607b78bd131bb0d108faf0c7a
Support the copying of attachments into the converted content.

diff -r 90e7ce5b6cef -r f5e5c9da103e moinconvert
--- a/moinconvert	Sat Apr 13 00:07:45 2019 +0200
+++ b/moinconvert	Sat Apr 13 00:08:31 2019 +0200
@@ -19,8 +19,8 @@
 this program.  If not, see <http://www.gnu.org/licenses/>.
 """
 
-from moinformat import errors, make_parser, make_serialiser, Metadata, parse, \
-                       serialise
+from moinformat import copy_attachments, errors, make_parser, make_serialiser, \
+                       Metadata, parse, serialise
 from os.path import split
 import sys
 
@@ -333,6 +333,8 @@
             output.writepage(outtext, pagename)
             print >>sys.stderr, pagename
 
+            copy_attachments(p, input, output)
+
     # Install any theme resources.
 
     if theme:
diff -r 90e7ce5b6cef -r f5e5c9da103e moinformat/__init__.py
--- a/moinformat/__init__.py	Sat Apr 13 00:07:45 2019 +0200
+++ b/moinformat/__init__.py	Sat Apr 13 00:08:31 2019 +0200
@@ -26,6 +26,7 @@
 from moinformat.parsers import get_parser, make_parser, parse
 from moinformat.serialisers import get_serialiser, make_serialiser, serialise
 from moinformat.themes import make_theme
+from moinformat.utils.copying import copy_attachments
 import moinformat.errors as errors
 
 # vim: tabstop=4 expandtab shiftwidth=4
diff -r 90e7ce5b6cef -r f5e5c9da103e moinformat/input/directory.py
--- a/moinformat/input/directory.py	Sat Apr 13 00:07:45 2019 +0200
+++ b/moinformat/input/directory.py	Sat Apr 13 00:08:31 2019 +0200
@@ -21,7 +21,7 @@
 
 from moinformat.input.common import Input
 from moinformat.utils.directory import Directory
-from os.path import sep
+from os.path import join, sep
 
 class DirectoryInput(Input):
 
@@ -93,6 +93,24 @@
 
         return self.readpath(self.dir.get_filename(filename), encoding)
 
+    # Convenience methods.
+
+    def get_attachment_filename(self, pagename, filename):
+
+        """
+        Return the full path of an attachment file for the given 'pagename'
+        having the given 'filename'.
+        """
+
+        if not pagename:
+            return None
+
+        if self.nested:
+            return self.dir.get_filename(join(self.to_filename(pagename),
+                                         self.attachments_dir, filename))
+        else:
+            return self.dir.get_filename(join(self.attachments_dir, filename))
+
     # NOTE: Translation methods should encode filenames appropriately.
 
     def to_filename(self, pagename):
diff -r 90e7ce5b6cef -r f5e5c9da103e moinformat/input/standalone.py
--- a/moinformat/input/standalone.py	Sat Apr 13 00:07:45 2019 +0200
+++ b/moinformat/input/standalone.py	Sat Apr 13 00:08:31 2019 +0200
@@ -3,7 +3,7 @@
 """
 Stand-alone input context.
 
-Copyright (C) 2018 Paul Boddie <paul@boddie.org.uk>
+Copyright (C) 2018, 2019 Paul Boddie <paul@boddie.org.uk>
 
 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
@@ -40,6 +40,17 @@
         f = codecs.getreader(self.encoding)(stream)
         return f.read()
 
+    # Convenience methods.
+
+    def get_attachment_filename(self, pagename, filename):
+
+        """
+        Prevent independent output by returning a filename of None corresponding
+        to the given 'pagename' and any specified 'filename'.
+        """
+
+        return None
+
 input = StandaloneInput
 
 # vim: tabstop=4 expandtab shiftwidth=4
diff -r 90e7ce5b6cef -r f5e5c9da103e moinformat/utils/copying.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/moinformat/utils/copying.py	Sat Apr 13 00:08:31 2019 +0200
@@ -0,0 +1,52 @@
+#!/usr/bin/env python
+
+"""
+Copying utilities.
+
+Copyright (C) 2019 Paul Boddie <paul@boddie.org.uk>
+
+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 <http://www.gnu.org/licenses/>.
+"""
+
+from shutil import copy
+
+def copy_attachments(parser, input, output):
+
+    "Copy attachments referenced by 'parser' from 'input' to 'output'."
+
+    pagename = parser.metadata.get("pagename")
+
+    if not pagename:
+        return
+
+    for link_target in parser.link_targets:
+
+        # Obtain attachments.
+
+        if link_target.get_type() == "attachment":
+
+            # Obtain the attachment filename, the source location and the
+            # destination.
+
+            filename = link_target.get_identifier()
+            input_filename = input.get_attachment_filename(pagename, filename)
+            output_filename = output.get_attachment_filename(pagename, filename)
+
+            # Copy the file if possible.
+
+            if input_filename and output_filename:
+                output.ensure_attachments(pagename)
+                copy(input_filename, output_filename)
+
+# vim: tabstop=4 expandtab shiftwidth=4