Edit book: When bulk renaming files add an option to rename by the order in which the files appear in the book.

manual/edit.rst

@@ -102,7 +102,10 @@ want to rename all the HTML files to have names Chapter-1.html, Chapter-2.html
 and so on. Select the files you want bulk renamed by holding down the Shift or
 Ctrl key and clicking the files. Then right click and select :guilabel:`Bulk
 rename`. Enter a prefix and what number you would like the automatic numbering
-to start at, click OK and you are done.
+to start at, click OK and you are done. The bulk rename dialog also lets you
+rename files by the order they appear int he book instead of the order you
+selected them in, useful, for instance to rename all images by the order
+they appear.
 
 Finally, you can bulk change the file extension for all selected files. Select
 multiple files, as above, and right click and choose :guilabel:`Change the file

src/calibre/ebooks/oeb/polish/replace.py

@@ -386,3 +386,19 @@ def remove_links_to(container, predicate):
             changed.add(name)
     tuple(map(container.dirty, changed))
     return changed
+
+
+def get_spine_order_for_all_files(container):
+    linear_names, non_linear_names = [], []
+    for name, is_linear in container.spine_names:
+        (linear_names if is_linear else non_linear_names).append(name)
+    all_names = linear_names + non_linear_names
+    spine_names = frozenset(all_names)
+    ans = {}
+    for spine_pos, name in enumerate(all_names):
+        ans.setdefault(name, (spine_pos, -1))
+        for i, href in enumerate(container.iterlinks(name, get_line_numbers=False)):
+            lname = container.href_to_name(href, name)
+            if lname not in spine_names:
+                ans.setdefault(lname, (spine_pos, i))
+    return ans

src/calibre/gui2/tweak_book/file_list.py

@@ -5,6 +5,8 @@ from __future__ import absolute_import, division, print_function, unicode_litera
 
 import os
 import posixpath
+import sys
+import textwrap
 from binascii import hexlify
 from collections import Counter, OrderedDict, defaultdict
 from functools import partial
@@ -24,7 +26,9 @@ from calibre.ebooks.oeb.polish.cover import (
     get_cover_page_name, get_raster_cover_name, is_raster_image
 )
 from calibre.ebooks.oeb.polish.css import add_stylesheet_links
-from calibre.ebooks.oeb.polish.replace import get_recommended_folders
+from calibre.ebooks.oeb.polish.replace import (
+    get_recommended_folders, get_spine_order_for_all_files
+)
 from calibre.gui2 import (
     choose_dir, choose_files, choose_save_file, elided_text, error_dialog,
     question_dialog
@@ -69,7 +73,8 @@ def name_is_ok(name, show_error):
     return True
 
 
-def get_bulk_rename_settings(parent, number, msg=None, sanitize=sanitize_file_name_unicode, leading_zeros=True, prefix=None, category='text'):  # {{{
+def get_bulk_rename_settings(parent, number, msg=None, sanitize=sanitize_file_name_unicode,
+        leading_zeros=True, prefix=None, category='text', allow_spine_order=False):  # {{{
     d = QDialog(parent)
     d.setWindowTitle(_('Bulk rename items'))
     d.l = l = QFormLayout(d)
@@ -87,6 +92,11 @@ def get_bulk_rename_settings(parent, number, msg=None, sanitize=sanitize_file_na
     d.num = num = QSpinBox(d)
     num.setMinimum(0), num.setValue(1), num.setMaximum(1000)
     l.addRow(_('Starting &number:'), num)
+    if allow_spine_order:
+        d.spine_order = QCheckBox(_('Rename files according to their book order'))
+        d.spine_order.setToolTip(textwrap.fill(_(
+            'Rename the selected files according to the order they appear in the book, instead of the order they were selected in.')))
+        l.addRow(d.spine_order)
     d.bb = bb = QDialogButtonBox(QDialogButtonBox.Ok | QDialogButtonBox.Cancel)
     bb.accepted.connect(d.accept), bb.rejected.connect(d.reject)
     l.addRow(bb)
@@ -103,6 +113,8 @@ def get_bulk_rename_settings(parent, number, msg=None, sanitize=sanitize_file_na
             fmt = '%0{0}d'.format(len(str(largest)))
         ans['prefix'] = prefix + fmt
         ans['start'] = num
+        if allow_spine_order:
+            ans['spine_order'] = d.spine_order.isChecked()
     return ans
 # }}}
 
@@ -591,7 +603,7 @@ class FileList(QTreeWidget):
         names = self.request_rename_common()
         if names is not None:
             categories = Counter(unicode(item.data(0, CATEGORY_ROLE) or '') for item in self.selectedItems())
-            settings = get_bulk_rename_settings(self, len(names), category=categories.most_common(1)[0][0])
+            settings = get_bulk_rename_settings(self, len(names), category=categories.most_common(1)[0][0], allow_spine_order=True)
             fmt, num = settings['prefix'], settings['start']
             if fmt is not None:
                 def change_name(name, num):
@@ -599,7 +611,15 @@ class FileList(QTreeWidget):
                     base, ext = parts[-1].rpartition('.')[0::2]
                     parts[-1] = (fmt % num) + '.' + ext
                     return '/'.join(parts)
-                name_map = {n:change_name(n, num + i) for i, n in enumerate(names)}
+                if settings['spine_order']:
+                    order_map = get_spine_order_for_all_files(current_container())
+                    select_map = {n:i for i, n in enumerate(names)}
+
+                    def key(n):
+                        return order_map.get(n, (sys.maxsize, select_map[n]))
+                    name_map = {n: change_name(n, num + i) for i, n in enumerate(sorted(names, key=key))}
+                else:
+                    name_map = {n:change_name(n, num + i) for i, n in enumerate(names)}
                 self.bulk_rename_requested.emit(name_map)
 
     def request_change_ext(self):