From c4ed54aaf133b03eecb0207419630084174fefe5 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Fri, 16 Mar 2012 09:02:18 +0530
Subject: [PATCH] ...

---
 src/calibre/ebooks/mobi/debug.py        | 28 +++++++++++++++++++++++--
 src/calibre/ebooks/mobi/reader/index.py |  8 ++++---
 2 files changed, 31 insertions(+), 5 deletions(-)

diff --git a/src/calibre/ebooks/mobi/debug.py b/src/calibre/ebooks/mobi/debug.py
index b03448a63b..5d3c73518c 100644
--- a/src/calibre/ebooks/mobi/debug.py
+++ b/src/calibre/ebooks/mobi/debug.py
@@ -652,9 +652,26 @@ class Tag(object): # {{{
 
     INTERPRET_MAP = {
             'subchapter': {
-                    21  : ('Parent chapter index', 'parent_index')
+                    21  : ('Parent chapter index', 'parent_index'),
+                    5   : ('Unknown (koffs)', 'koffs'),
             },
 
+            'section' : {
+                6 : ('File Index', 'pos_fid'),
+            },
+
+            'section_with_subsections' : {
+                6 : ('File Index', 'pos_fid'),
+                22 : ('First subsection index', 'first_child_index'),
+                23 : ('Last subsection index', 'last_child_index'),
+
+            },
+            'subsection' : {
+                6 : ('File Index', 'pos_fid'),
+                21  : ('Parent section index', 'parent_index'),
+            },
+
+
             'article'   : {
                     5  : ('Class offset in cncx', 'class_offset'),
                     21 : ('Parent section index', 'parent_index'),
@@ -707,13 +724,17 @@ class Tag(object): # {{{
             try:
                 self.desc, self.attr = td[tag_type]
             except:
-                print ('Unknown tag value: %d'%tag_type)
+                print ('Unknown tag value: %d in entry type: %s'%(tag_type,
+                    entry_type))
                 self.desc = '??Unknown (tag value: %d type: %s)'%(
                         tag_type, entry_type)
                 self.attr = 'unknown'
         if '_offset' in self.attr:
             self.cncx_value = cncx[self.value]
 
+        if self.attr == 'pos_fid':
+            print (1111111, vals)
+
     def __str__(self):
         if self.cncx_value is not None:
             return '%s : %r [%r]'%(self.desc, self.value, self.cncx_value)
@@ -738,6 +759,9 @@ class IndexEntry(object): # {{{
             0x0f : 'chapter',
             0x6f : 'chapter_with_subchapters',
             0x1f : 'subchapter',
+            0x8f : 'section',
+            0xef : 'section_with_subsections',
+            0x9f : 'subsection',
             # Present in periodicals
             0xdf : 'periodical',
             0xff : 'section',
diff --git a/src/calibre/ebooks/mobi/reader/index.py b/src/calibre/ebooks/mobi/reader/index.py
index 41177873b7..b292d55c13 100644
--- a/src/calibre/ebooks/mobi/reader/index.py
+++ b/src/calibre/ebooks/mobi/reader/index.py
@@ -105,9 +105,11 @@ def get_tag_map(control_byte_count, tags, data, start, end):
         if value != 0:
             if value == mask:
                 if count_set_bits(mask) > 1:
-                    # If all bits of masked value are set and the mask has more than one bit, a variable width value
-                    # will follow after the control bytes which defines the length of bytes (NOT the value count!)
-                    # which will contain the corresponding variable width values.
+                    # If all bits of masked value are set and the mask has more
+                    # than one bit, a variable width value will follow after
+                    # the control bytes which defines the length of bytes (NOT
+                    # the value count!) which will contain the corresponding
+                    # variable width values.
                     value, consumed = decint(data[data_start:])
                     data_start += consumed
                     ptags.append((tag, None, value, values_per_entry))