Effective base of libisoburn+xorriso 0.1.1 2008.02.22.124732

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2008-02-23 10:01:07 +00:00
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FEATURES
========
Contents:
2.0 Operations on image tree
2.1 ECMA-119
2.2 Rock Ridge
2.3 Joliet
2.4 El-Torito
2.5 UDF
2.6 HFS/HFS+
2.7 Others
===============================================================================
2.0 Operations on image tree
-----------------------------
Basic:
- We HAVE TO Support addition of directories
- From filesystem
- From filesystem recursively
- New on image
- We HAVE TO support addition of files
- From local filesystem
- From previous/ms images
- We HAVE TO support addition of other POSIX file types
- From filesystem
- New on image
- Types: symlinks, block/char devices, fifos, sockets...
- We HAVE TO support modification of file names on image
- We HAVE TO support modification of POSIX attributes:
- Uid/Gid
- Permissions (we DON'T HAVE TO support full mode modification,
as we don't want a dir to be changed to a reg file!!)
- Timestamps
- We HAVE TO support deletion of nodes.
- We HAVE TO support iteration of directory tree.
- We WANT TO support direct getting (without iteration) of the number of
nodes in a directory.
Extras:
- We WANT TO support on-the-fly modification of file contents, to
allow things like compression and encryption.
Notes: many operations will need RR extensions to be actually reflected on
the image.
===============================================================================
2.1 ECMA-119
------------
Support for ECMA-119 (ISO-9660) specification.
2.1.1 Creation
--------------
We HAVE TO support creation of new images.
General:
- We HAVE TO support single volume images
- We DON'T NEED TO support multiple volume images.
It seems multiple volume images are not used.
- We HAVE TO support bootable volumes (see 2.4 in this doc)
Conformance:
- We HAVE TO support Level 1 restrictions (ECMA-119 10.1)
- We HAVE TO support Level 2 restrictions (ECMA-119 10.2)
Single Section files have a theoric size limit of 4GB (data length
is a 32-bit number, see ECMA-119 9.1.4). However I think I have
read that only files up to 2GB are supported.
- We MAY support full Level 3 (ECMA-119 10.3)
Multiple file sections are useful to support files higher than
level 2 limit. However, it seems it's a feature not supported in
most O.S. nowadays, so it's not very useful.
- We DON'T WANT TO support files recording in interleaved mode
(ECMA-119 6.4.3)
It seems a feature that it's not used.
- We DON'T WANT TO support associated files (ECMA-119 6.5.4)
What is that? Is it used?
- We DON'T WANT TO support Volume Partitions (ECMA-119 8.6)
What is that? Is it used?
- We DON'T WANT TO support extended attribute records (ECMA-119 9.5)
It seems an unused feature. RR is a better alternative.
- We DON'T NEED TO support file versions other than 1.
Restrictions:
- We HAVE TO provide a way to relax iso restrictions related to
filenames, allowing:
- Higher filename length, up to 37 chars (ECMA-119 7.5.1/7.6.3)
- Omit version number (ECMA-119 7.5.1)
- Directory hierarchy deeper than 8 levels / 255 path length
(ECMA-119 6.8.2.1)
- More characters in filenames, not only d-characters
2.2.2 Reading
-------------
General
- We HAVE TO support the reading of iso images
- We DON'T NEED TO support reading of features we don't support in
creation (see 2.2.1 above)
- We HAVE TO support reading arbitray file contents inside image
2.2.3 Modification/growing
--------------------------
General
- We HAVE TO support creation of new images from the contents of
an existing image
- We HAVE TO support multissession images
- We HAVE TO support growing of images
===============================================================================
2.2 Rock Ridge
--------------
- We HAVE TO support ALL Rock Ridge features, with these exceptions:
- We DON'T NEED TO support SF System User Entry (RRIP 4.1.7), used to
encode sparse files.
- We MIGHT support BACKUP timestamp (RRIP 4.1.6)
- We HAVE TO support any charset in RR filenames, and not only POSIX portable
filename character set (RRIP 3.4.1). Namely, UTF-8 SHOULD BE the default for
RR filenames.
- We MIGHT support Linux specific ZF extension, to allow transparent
compression.
===============================================================================
2.3 Joliet
----------
- We HAVE TO support ALL Joliet features, with these exceptions:
- We DON'T KNOW what to do with UCS-2 conformance level 1 and 2 (scape
sequences '%\@' and '%\C'). What's this???????
- We DON'T KNOW what to do with CD-XA extensions.
===============================================================================
2.4 El-Torito
-------------
- We HAVE TO El-Torito standard with a single boot image.
- We MAY support multiple boot images and boot entry selection.
- El Torito standard is not very clear about how to do that.
- We HAVE TO support both emulation and not emulation mode.
- We HAVE TO support 80x86 platform. We MAY support Power PC and Mac platforms.
- We HAVE TO provide improved support for isolinux boot images, namely patching
features.
- We HAVE TO support El-Torito in ms images.
===============================================================================
2.5 UDF
-------
===============================================================================
2.6 HFS/HFS+
------------
===============================================================================
2.7 Others
----------
- We HAVE TO support sorting of file contents on image
- We HAVE TO support inode caching to prevent the same file to be written
several times into the image
- We DON'T NEED TO support TRANS.TBL files
- We DON'T NEED TO support padding of images
- Padding should be part of the burning process

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USE CASES FOR NG LIBISOFS
=========================
3.1 General Operations
======================
3.1.1 Creation of a new image
-----------------------------
Desc: Creation of a new ISO image from files on the local filesystem
Phases:
- User creates a new image context
- User get the root (empty) of the image
- User adds files to the image root (see 3.2.)
- User sets the options for the the new image (extension to use...)
- User gets a burn_source to write the image.
- The burn_source can be used by libburn to write the new image.
3.1.2 Image growing (multisession)
----------------------------------
Desc: An existing image can be grown with new files. New content is added
incrementally. Suitable for multisession. Growing support for
overwritteable media.
Phases:
- Uses reads an existing image to get the image context.
- User get the root of the image
- User modifies the image tree (see 3.2.)
- User sets the options for the the new image (extension to use...)
A required option will be the nwa for the image.
Optionally it can pass a pointer to a 64K buffer, that will be filled
with suitable volume descriptors to be used with overwrieable media.
- User gets a burn_source to write the image.
- The burn_source can be used by libburn to write an image that should be
appended to the previous image.
3.1.3 Image modification
------------------------
Desc: Creation of a new image from the contents of a previous image.
Phases:
- Uses reads an existing image to get the image context.
- User get the root of the image
- User modifies the image tree (see 3.2.)
- User sets the options for the the new image (extension to use...)
- User gets a burn_source to write the image.
- The burn_source can be used by libburn to write the image to another
device or file.
3.2 Tree operations
===================
3.2.1 Addition of contents
--------------------------
All addition operations take a parent dir. The functions check that the
node name is unique among all children. Image context options determine
what to do if a file with such name already exist.
3.2.1.1 Directories
--------------------
- Creation of new directories in image, given a parent dir. and a name.
Attributes are initialized to default values
- Addition of a dir from the filesystem, given a parent.
Dir contents are not added. Name and other attributes taken from
the dir on filesystem
- Recursive addition of a dir, given a parent. Directory contents are
recursivelly added to image.
3.2.1.2 Regular files
----------------------
- Addition of a local filesystem file. Name, attributes and contents to
be written taken from the filesystem file.
- Addition of files from the previous image. Files are automatically
added to the tree when the image is read. Name and attrbs taken from
previous image. When the image has no RR extensions, unavailable atts
are initialized to default values. The contents are only written to
img if we choose image modification.
- Addition of filtered files. Name and atts taken from the local
filesystem. A filter (see 3.3) is applied to the file contents before
written to image.
- Addition of splitted files. Like local filesystem files, but the file
is splitted in several files on a given size. Suitable for big (> 2GB)
files. Name of the splitted files automatically generated.
3.2.1.3 Symbolic links
----------------------
Simbolic links are only written to image if RR extensions are enabled.
- Addition of a simbolic link from local filesystem. Name, atts and
dest of a path are taken from the simbolic link.
- Addition of new link on image to a path. Name and dest specified,
the destination is specified as a path. Attributes initialized to
default values.
- Addition of new link on image to another node. Name and dest
specified, the dest is set to a node previously added to image.
When written, the destination path is computed as the relative path
from the link to the destination node. Attributes initialized to
default values.
3.2.1.4 Special files (block devices, fifos...)
-----------------------------------------------
Special files are only written to image if RR extensions are enabled.
- Addition of special files from filesystem.
- Creation of new special files on image.
3.2.2 Modification of contents
------------------------------
3.2.2.1 Deletion of nodes
-------------------------
- Any node can be deleted. When a dir is remove, all its contents
are also removed.
3.2.2.2 Move
------------
- Any node can be move to another dir..
3.2.2.3 Rename
--------------
- You can change the name of any node
3.2.2.4 Change of POSIX attributes
----------------------------------
- Following POSIX atts can be changed: owner (uid/gid), permissions,
timestamps.
3.2.3 Bootable information
--------------------------
- Addition of a boot image to a volume.
- In most cases, the catalog and the boot image itself is added to the
iso tree.
- Alternatively, user can select to add a hidden images, i.e., images
that don't appear in the iso tree.
- Modification of boot image attributes:
- bootable flag
- load segment
- load size
- Automatic patching of isolinux images. User needs to set whether to apply
this.
- Reading of El-Torito info from multisession images. Modification of its
attributes.
- Removing of El-Torito images
3.2.4 Other operations
----------------------
3.2.4.1 Set file sort weight
-----------------------------
- Any file can have a sort weight, that will determine the order in
which the files are written to image
3.2.4.2 Hidding of nodes
------------------------
- Files can be hidden in the RR or Joliet tree
3.3 Filters
===========
[TODO]
Support for:
- compression filter
- encryption filter
- external process filter

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Index
=====
1. Overview
2. Features
3. Design
4. Implementation

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<double>0.0</double>
<double>0.0</double>
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<void method="addNode">
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<void property="text">
<void property="text">
<string>9. Finally, the FileTreeNode is added to
the parent dir, and returned to the user</string>
</void>
</void>
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<string>10. The user can change any attribute
on the FileTreeNode</string>
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</void>
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<object class="java.awt.geom.Point2D$Double">
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<void property="middleLabel">
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</void>
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<object idref="ActivationBarNode0"/>
<object idref="ActivationBarNode1"/>
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<void method="connect">
<object class="com.horstmann.violet.CallEdge">
<void property="middleLabel">
<string>add_file(file,b)</string>
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<object idref="ActivationBarNode1"/>
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<void method="connect">
<object class="com.horstmann.violet.CallEdge">
<void property="middleLabel">
<string>create_file(file)</string>
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<object idref="ActivationBarNode3"/>
</void>
<void method="connect">
<object class="com.horstmann.violet.CallEdge">
<void property="middleLabel">
<string>lstat()</string>
</void>
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<object idref="ActivationBarNode3"/>
<object idref="ActivationBarNode4"/>
</void>
<void method="connect">
<object class="com.horstmann.violet.ReturnEdge">
<void property="middleLabel">
<string>S_IFREG</string>
</void>
</object>
<object idref="ActivationBarNode4"/>
<object idref="ActivationBarNode3"/>
</void>
<void method="connect">
<object class="com.horstmann.violet.CallEdge">
<void property="middleLabel">
<string>«create»</string>
</void>
</object>
<object idref="ActivationBarNode3"/>
<object idref="LifelineNode4"/>
</void>
<void method="connect">
<object class="com.horstmann.violet.CallEdge">
<void property="middleLabel">
<string>set attributes</string>
</void>
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<object idref="ActivationBarNode3"/>
<object idref="ActivationBarNode5"/>
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<void method="connect">
<object class="com.horstmann.violet.ReturnEdge"/>
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<object idref="ActivationBarNode3"/>
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<void method="connect">
<object class="com.horstmann.violet.ReturnEdge">
<void property="lineStyle">
<object class="com.horstmann.violet.LineStyle" field="SOLID"/>
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<void property="middleLabel">
<string>ftn</string>
</void>
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<object idref="ActivationBarNode3"/>
<object idref="ActivationBarNode2"/>
</void>
<void method="connect">
<object class="com.horstmann.violet.CallEdge">
<void property="middleLabel">
<string>«create»</string>
</void>
</object>
<object idref="ActivationBarNode3"/>
<object idref="LifelineNode5"/>
</void>
<void method="connect">
<object class="com.horstmann.violet.CallEdge">
<void property="middleLabel">
<string>set stream (fs)</string>
</void>
</object>
<object idref="ActivationBarNode3"/>
<object idref="ActivationBarNode6"/>
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<void method="connect">
<object class="com.horstmann.violet.ReturnEdge"/>
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<void property="lineStyle">
<object class="com.horstmann.violet.LineStyle" field="SOLID"/>
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<void property="middleLabel">
<string>ftn</string>
</void>
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<object idref="ActivationBarNode2"/>
<object idref="ActivationBarNode1"/>
</void>
<void method="connect">
<object class="com.horstmann.violet.CallEdge">
<void property="middleLabel">
<string>«create»</string>
</void>
</object>
<object idref="ActivationBarNode1"/>
<object idref="LifelineNode3"/>
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<void method="connect">
<object class="com.horstmann.violet.CallEdge">
<void property="middleLabel">
<string>get(path)</string>
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<object idref="ActivationBarNode1"/>
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<void method="connect">
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<void method="connect">
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<object idref="PointNode8"/>
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<void method="connect">
<object class="com.horstmann.violet.CallEdge">
<void property="middleLabel">
<string>set_permission()</string>
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<object idref="ActivationBarNode1"/>
<object idref="ActivationBarNode7"/>
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<void method="connect">
<object class="com.horstmann.violet.ReturnEdge"/>
<object idref="ActivationBarNode7"/>
<object idref="ActivationBarNode1"/>
</void>
<void method="connect">
<object class="com.horstmann.violet.NoteEdge"/>
<object idref="NoteNode7"/>
<object idref="PointNode9"/>
</void>
</object>
</java>

View File

@ -0,0 +1,884 @@
<?xml version="1.0" encoding="UTF-8"?>
<java version="1.6.0" class="java.beans.XMLDecoder">
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<void method="addNode">
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<void property="methods">
<void property="text">
<string>get_root()
get_from_path(char *)</string>
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</void>
<void property="name">
<void property="text">
<string>«interface»
Filesystem</string>
</void>
</void>
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<void method="addNode">
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<void property="text">
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<void property="text">
<string>lstat()
read()
close()
open()
readdir()</string>
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</void>
<void property="name">
<void property="text">
<string>«interface»
SourceFile</string>
</void>
</void>
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<object class="java.awt.geom.Point2D$Double">
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<double>481.55979910778467</double>
<double>464.84194569982117</double>
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</void>
<void method="addNode">
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</void>
<void method="addNode">
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<void property="methods">
<void property="text">
<string>read()
size()
open()
close()</string>
</void>
</void>
<void property="name">
<void property="text">
<string>«interface»
Stream</string>
</void>
</void>
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<object class="java.awt.geom.Point2D$Double">
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<double>340.36024540554786</double>
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</void>
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<void property="text">
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</void>
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<double>505.6600343909271</double>
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</object>
</void>
<void method="addNode">
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<void property="text">
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<double>514.5953286599063</double>
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</void>
<void method="addNode">
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<void property="name">
<void property="text">
<string>TransformStream</string>
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</void>
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<double>774.6238447615127</double>
<double>513.9203093177954</double>
</void>
</object>
</void>
<void method="addNode">
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<void property="text">
<string>create_file()
create_symlink()
create_dir()</string>
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</void>
<void property="name">
<void property="text">
<string>«interface»
TreeNodeBuilder</string>
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</void>
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</void>
<void method="addNode">
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<void property="text">
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<double>137.7586776694888</double>
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</void>
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DirBuilder</string>
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<void property="text">
<void property="text">
<string>POSIX inspired interface to files on different filesystems.
open/close act as a opendir/closedir if the file is a dir,
I think we don&apos;t need different function to open a dir.</string>
</void>
</void>
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<double>333.9382491299707</double>
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<void property="text">
<void property="text">
<string>&quot;Sources&quot; for file contents</string>
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</void>
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<void method="setLocation">
<double>587.0127806828101</double>
<double>358.755499461917</double>
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</object>
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</void>
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<double>605.2834046956852</double>
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</void>
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<object id="ClassNode11" class="com.horstmann.violet.ClassNode">
<void property="name">
<void property="text">
<string>FilterStream</string>
</void>
</void>
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<object class="java.awt.geom.Point2D$Double">
<void method="setLocation">
<double>721.2489168102784</double>
<double>605.2834046956852</double>
</void>
</object>
</void>
<void method="addNode">
<object id="InterfaceNode7" class="com.horstmann.violet.InterfaceNode">
<void property="name">
<void property="text">
<string>«interface»
Filter</string>
</void>
</void>
</object>
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<void method="setLocation">
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<double>705.6925676241749</double>
</void>
</object>
</void>
<void method="addNode">
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<void property="text">
<void property="text">
<string>Used for arbitray streams, not related to
filesystem high-level idea. Also used for
files like fifos, that can&apos;t be added directly as
regulat files via de Builder, because its size is
unknown. The need to be added as new_files
on image</string>
</void>
</void>
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<object class="java.awt.geom.Point2D$Double">
<void method="setLocation">
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<double>328.0975464705584</double>
</void>
</object>
</void>
<void method="addNode">
<object id="NoteNode3" class="com.horstmann.violet.NoteNode">
<void property="text">
<void property="text">
<string>Create the user-specified TreeNode from the
user-specified source. If the source type differs the
TreeNode type the use wants to create, it makes
the needed conversion, if possible. Each builder
implementation can do different conversions.</string>
</void>
</void>
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<void method="setLocation">
<double>654.7808793787427</double>
<double>20.610173055266337</double>
</void>
</object>
</void>
<void method="addNode">
<object id="NoteNode4" class="com.horstmann.violet.NoteNode">
<void property="text">
<void property="text">
<string>Together with the SourceFile encapsulates the
access to a given filesystem and abstracts it to
a POSIX interface.</string>
</void>
</void>
</object>
<object class="java.awt.geom.Point2D$Double">
<void method="setLocation">
<double>20.610173055266422</double>
<double>403.050865276332</double>
</void>
</object>
</void>
<void method="addNode">
<object id="NoteNode5" class="com.horstmann.violet.NoteNode">
<void property="text">
<void property="text">
<string>The TreeNodeBuilder can be created with
the combination of different interfaces for
each factory method</string>
</void>
</void>
</object>
<object class="java.awt.geom.Point2D$Double">
<void method="setLocation">
<double>149.90663761154804</double>
<double>57.982756057296896</double>
</void>
</object>
</void>
<void method="addNode">
<object id="ClassNode12" class="com.horstmann.violet.ClassNode">
<void property="name">
<void property="text">
<string>MountedSrc</string>
</void>
</void>
</object>
<object class="java.awt.geom.Point2D$Double">
<void method="setLocation">
<double>373.3523804664971</double>
<double>634.9818895055197</double>
</void>
</object>
</void>
<void method="addNode">
<object id="ClassNode13" class="com.horstmann.violet.ClassNode">
<void property="name">
<void property="text">
<string>TarSrc</string>
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Note also that while this provides considerable encapsulation
the provided abstraction is really partial: In the relation
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concrete state know what method to call here (notice that
this interface is also quite coupled with state). However,
with respect to Ecma119Image the abstration only refers
to implementation, as the Ecma119Image needs to know
about the ImageWriter implementations. This can&apos;t be
avoided, as Ecma119Image has to be responsible of the
instantation in the correct order and following the user
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<double>286.59891471565567</double>
<double>708.7674405416217</double>
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<void method="addNode">
<object id="NoteNode3" class="com.horstmann.violet.NoteNode">
<void property="text">
<void property="text">
<string>Each state will invoque property method in each of
the ImageWriters. Some writers can return without
outputting anything. It is possible that when dealing
with UDF or other specification we would need new
states and methods in ImageWriter</string>
</void>
</void>
</object>
<object class="java.awt.geom.Point2D$Double">
<void method="setLocation">
<double>765.8493820617523</double>
<double>132.001989765302</double>
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<object class="com.horstmann.violet.LineStyle" field="DOTTED"/>
</void>
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<object idref="ClassNode0"/>
<object idref="InterfaceNode0"/>
</void>
<void method="connect">
<object class="com.horstmann.violet.ClassRelationshipEdge">
<void property="bentStyle">
<object class="com.horstmann.violet.BentStyle" field="VHV"/>
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<object class="com.horstmann.violet.ArrowHead" field="TRIANGLE"/>
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<object class="com.horstmann.violet.LineStyle" field="DOTTED"/>
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<object idref="ClassNode3"/>
<object idref="ClassNode1"/>
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<void method="connect">
<object class="com.horstmann.violet.ClassRelationshipEdge">
<void property="bentStyle">
<object class="com.horstmann.violet.BentStyle" field="VHV"/>
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<void property="endArrowHead">
<object class="com.horstmann.violet.ArrowHead" field="TRIANGLE"/>
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<void property="lineStyle">
<object class="com.horstmann.violet.LineStyle" field="DOTTED"/>
</void>
</object>
<object idref="ClassNode4"/>
<object idref="ClassNode1"/>
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<void method="connect">
<object class="com.horstmann.violet.ClassRelationshipEdge">
<void property="bentStyle">
<object class="com.horstmann.violet.BentStyle" field="VHV"/>
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<void property="endArrowHead">
<object class="com.horstmann.violet.ArrowHead" field="TRIANGLE"/>
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<void property="lineStyle">
<object class="com.horstmann.violet.LineStyle" field="DOTTED"/>
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<object idref="ClassNode2"/>
<object idref="ClassNode1"/>
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<void method="connect">
<object class="com.horstmann.violet.ClassRelationshipEdge">
<void property="bentStyle">
<object class="com.horstmann.violet.BentStyle" field="HVH"/>
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<void property="endArrowHead">
<object class="com.horstmann.violet.ArrowHead" field="V"/>
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<void property="startArrowHead">
<object class="com.horstmann.violet.ArrowHead" field="DIAMOND"/>
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<object idref="ClassNode0"/>
<object idref="ClassNode1"/>
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<object idref="NoteNode0"/>
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<object class="com.horstmann.violet.ArrowHead" field="V"/>
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<object class="com.horstmann.violet.LineStyle" field="DOTTED"/>
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<object idref="ClassNode0"/>
<object idref="ClassNode5"/>
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<void method="connect">
<object class="com.horstmann.violet.ClassRelationshipEdge">
<void property="bentStyle">
<object class="com.horstmann.violet.BentStyle" field="VHV"/>
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<void property="endArrowHead">
<object class="com.horstmann.violet.ArrowHead" field="TRIANGLE"/>
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<void property="lineStyle">
<object class="com.horstmann.violet.LineStyle" field="DOTTED"/>
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</object>
<object idref="ClassNode10"/>
<object idref="InterfaceNode1"/>
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<void method="connect">
<object class="com.horstmann.violet.ClassRelationshipEdge">
<void property="bentStyle">
<object class="com.horstmann.violet.BentStyle" field="VHV"/>
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<void property="endArrowHead">
<object class="com.horstmann.violet.ArrowHead" field="TRIANGLE"/>
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<void property="lineStyle">
<object class="com.horstmann.violet.LineStyle" field="DOTTED"/>
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<object idref="ClassNode9"/>
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<void method="connect">
<object class="com.horstmann.violet.ClassRelationshipEdge">
<void property="bentStyle">
<object class="com.horstmann.violet.BentStyle" field="VHV"/>
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<object class="com.horstmann.violet.ArrowHead" field="TRIANGLE"/>
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<object class="com.horstmann.violet.LineStyle" field="DOTTED"/>
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<object idref="ClassNode11"/>
<object idref="InterfaceNode1"/>
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<void method="connect">
<object class="com.horstmann.violet.ClassRelationshipEdge">
<void property="bentStyle">
<object class="com.horstmann.violet.BentStyle" field="HVH"/>
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<object class="com.horstmann.violet.ArrowHead" field="V"/>
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<void property="endLabel">
<string>*</string>
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<void property="startArrowHead">
<object class="com.horstmann.violet.ArrowHead" field="BLACK_DIAMOND"/>
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<object idref="ClassNode5"/>
<object idref="InterfaceNode1"/>
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<void method="connect">
<object class="com.horstmann.violet.ClassRelationshipEdge">
<void property="bentStyle">
<object class="com.horstmann.violet.BentStyle" field="HVH"/>
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<void property="endArrowHead">
<object class="com.horstmann.violet.ArrowHead" field="V"/>
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<object idref="ClassNode9"/>
<object idref="ClassNode6"/>
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<void method="connect">
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<void property="bentStyle">
<object class="com.horstmann.violet.BentStyle" field="HVH"/>
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<void property="endArrowHead">
<object class="com.horstmann.violet.ArrowHead" field="V"/>
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<object idref="ClassNode10"/>
<object idref="ClassNode7"/>
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<object class="com.horstmann.violet.BentStyle" field="HVH"/>
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<object class="com.horstmann.violet.ArrowHead" field="V"/>
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<string>*</string>
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<object class="com.horstmann.violet.ArrowHead" field="V"/>
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<object class="com.horstmann.violet.BentStyle" field="VH"/>
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<object class="com.horstmann.violet.ArrowHead" field="V"/>
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<object class="com.horstmann.violet.LineStyle" field="DOTTED"/>
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<object idref="ClassNode2"/>
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<void method="connect">
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<void property="endArrowHead">
<object class="com.horstmann.violet.ArrowHead" field="V"/>
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<object class="com.horstmann.violet.LineStyle" field="DOTTED"/>
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<object idref="InterfaceNode1"/>
<object idref="ClassNode8"/>
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<void method="connect">
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<object idref="NoteNode1"/>
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<?xml version="1.0" encoding="UTF-8"?>
<java version="1.6.0" class="java.beans.XMLDecoder">
<object class="com.horstmann.violet.ClassDiagramGraph">
<void method="addNode">
<object id="ClassNode0" class="com.horstmann.violet.ClassNode">
<void property="name">
<void property="text">
<string>Volume</string>
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</void>
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<object class="java.awt.geom.Point2D$Double">
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<void method="addNode">
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<void property="attributes">
<void property="text">
<string>block : uint32_t</string>
</void>
</void>
<void property="name">
<void property="text">
<string>ElToritoCatalog</string>
</void>
</void>
</object>
<object class="java.awt.geom.Point2D$Double">
<void method="setLocation">
<double>472.58578643762684</double>
<double>344.73506473629425</double>
</void>
</object>
</void>
<void method="addNode">
<object id="ClassNode2" class="com.horstmann.violet.ClassNode">
<void property="attributes">
<void property="text">
<string>bootable : bool
type : enum
partition_type : enum
load_seg : uint16
load_size : uint16
patch_isolinux : bool
block: uint32_t</string>
</void>
</void>
<void property="name">
<void property="text">
<string>BootImage</string>
</void>
</void>
</object>
<object class="java.awt.geom.Point2D$Double">
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<double>470.4142135623731</double>
<double>487.3919189857866</double>
</void>
</object>
</void>
<void method="addNode">
<object id="NoteNode0" class="com.horstmann.violet.NoteNode">
<void property="text">
<void property="text">
<string>In a future we can support several boot
images</string>
</void>
</void>
</object>
<object class="java.awt.geom.Point2D$Double">
<void method="setLocation">
<double>251.63542622468316</double>
<double>429.69343417595167</double>
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</object>
</void>
<void method="addNode">
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<void property="attributes">
<void property="text">
<string>img : boolean</string>
</void>
</void>
<void property="name">
<void property="text">
<string>BootNode</string>
</void>
</void>
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<object class="java.awt.geom.Point2D$Double">
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<double>334.49242404917493</double>
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</void>
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<void property="name">
<void property="text">
<string>TreeNode</string>
</void>
</void>
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</void>
<void property="name">
<string>iso_tree</string>
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<object class="java.awt.geom.Point2D$Double">
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<double>180.0</double>
<double>40.0</double>
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<void method="addNode">
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<double>69.0</double>
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</object>
</void>
<void method="addNode">
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<void property="text">
<void property="text">
<string>The img field is an implementation detail, used
to distinguish between the catalog node and the image
node. This is needed when the image is written.</string>
</void>
</void>
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<object class="java.awt.geom.Point2D$Double">
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<void property="text">
<string>The support for growing or modify El-Torito images
is really hard to implement. The reason: when the
image is hidden, we don&apos;t know its size, so the best we
can do is just refer to the old image. When modify, all
we can do may be wrong.</string>
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</void>
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</object>
</void>
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<void property="text">
<string>The block in both Catalog and BootImage is needed
for multissession images</string>
</void>
</void>
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<void method="setLocation">
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<double>441.1316647878586</double>
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<string>File</string>
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<double>172.5340546095176</double>
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</void>
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<string>CatalogStream</string>
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<double>283.5127233261827</double>
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</void>
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<void property="text">
<string>FileStream</string>
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<double>743.4055403867466</double>
<double>284.4253525880894</double>
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</object>
</void>
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<void property="text">
<string>TransformStream</string>
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</void>
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<double>958.5987801403015</double>
<double>279.8322618091961</double>
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</object>
</void>
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<void property="name">
<void property="text">
<string>«interface»
Stream</string>
</void>
</void>
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<void method="setLocation">
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<double>157.05765855361264</double>
</void>
</object>
</void>
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<void property="name">
<void property="text">
<string>IsoLinuxPatch</string>
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</void>
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<object class="java.awt.geom.Point2D$Double">
<void method="setLocation">
<double>968.73629022557</double>
<double>384.6660889654818</double>
</void>
</object>
</void>
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<void property="text">
<void property="text">
<string>Generates the content of the catalog on-the-fly</string>
</void>
</void>
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<object class="java.awt.geom.Point2D$Double">
<void method="setLocation">
<double>517.6021638285529</double>
<double>107.48023074035522</double>
</void>
</object>
</void>
<void method="addNode">
<object id="NoteNode5" class="com.horstmann.violet.NoteNode">
<void property="text">
<void property="text">
<string>To apply the needed patch to isolinux
images</string>
</void>
</void>
</object>
<object class="java.awt.geom.Point2D$Double">
<void method="setLocation">
<double>923.4814562296309</double>
<double>509.1168824543143</double>
</void>
</object>
</void>
<void method="connect">
<object class="com.horstmann.violet.ClassRelationshipEdge">
<void property="bentStyle">
<object class="com.horstmann.violet.BentStyle" field="HVH"/>
</void>
<void property="endArrowHead">
<object class="com.horstmann.violet.ArrowHead" field="V"/>
</void>
<void property="endLabel">
<string>1 image</string>
</void>
<void property="startArrowHead">
<object class="com.horstmann.violet.ArrowHead" field="BLACK_DIAMOND"/>
</void>
</object>
<object idref="ClassNode1"/>
<object idref="ClassNode2"/>
</void>
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<object class="com.horstmann.violet.NoteEdge"/>
<object idref="ClassNode1"/>
<object idref="NoteNode0"/>
</void>
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<object class="com.horstmann.violet.ClassRelationshipEdge">
<void property="bentStyle">
<object class="com.horstmann.violet.BentStyle" field="HVH"/>
</void>
<void property="endArrowHead">
<object class="com.horstmann.violet.ArrowHead" field="V"/>
</void>
<void property="endLabel">
<string>0..1 boot_cat</string>
</void>
</object>
<object idref="ClassNode0"/>
<object idref="ClassNode1"/>
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<object class="com.horstmann.violet.ClassRelationshipEdge">
<void property="bentStyle">
<object class="com.horstmann.violet.BentStyle" field="HVH"/>
</void>
<void property="endArrowHead">
<object class="com.horstmann.violet.ArrowHead" field="V"/>
</void>
<void property="endLabel">
<string>0..1 node</string>
</void>
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<object idref="ClassNode1"/>
<object idref="ClassNode3"/>
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<object class="com.horstmann.violet.NoteEdge"/>
<object idref="ClassNode3"/>
<object idref="NoteNode1"/>
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<object class="com.horstmann.violet.BentStyle" field="HV"/>
</void>
<void property="endArrowHead">
<object class="com.horstmann.violet.ArrowHead" field="V"/>
</void>
<void property="endLabel">
<string>0..1 node</string>
</void>
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<object idref="ClassNode3"/>
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<object class="com.horstmann.violet.BentStyle" field="VHV"/>
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<object class="com.horstmann.violet.ArrowHead" field="TRIANGLE"/>
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<object idref="ClassNode5"/>
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<object class="com.horstmann.violet.BentStyle" field="VHV"/>
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<object class="com.horstmann.violet.ArrowHead" field="TRIANGLE"/>
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<object idref="ClassNode4"/>
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<object class="com.horstmann.violet.BentStyle" field="VHV"/>
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<object class="com.horstmann.violet.ArrowHead" field="TRIANGLE"/>
</void>
<void property="lineStyle">
<object class="com.horstmann.violet.LineStyle" field="DOTTED"/>
</void>
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<object idref="ClassNode8"/>
<object idref="InterfaceNode0"/>
</void>
<void method="connect">
<object class="com.horstmann.violet.ClassRelationshipEdge">
<void property="bentStyle">
<object class="com.horstmann.violet.BentStyle" field="VHV"/>
</void>
<void property="endArrowHead">
<object class="com.horstmann.violet.ArrowHead" field="TRIANGLE"/>
</void>
<void property="lineStyle">
<object class="com.horstmann.violet.LineStyle" field="DOTTED"/>
</void>
</object>
<object idref="ClassNode7"/>
<object idref="InterfaceNode0"/>
</void>
<void method="connect">
<object class="com.horstmann.violet.ClassRelationshipEdge">
<void property="bentStyle">
<object class="com.horstmann.violet.BentStyle" field="VH"/>
</void>
<void property="endArrowHead">
<object class="com.horstmann.violet.ArrowHead" field="V"/>
</void>
<void property="endLabel">
<string>1</string>
</void>
<void property="startArrowHead">
<object class="com.horstmann.violet.ArrowHead" field="BLACK_DIAMOND"/>
</void>
</object>
<object idref="ClassNode8"/>
<object idref="InterfaceNode0"/>
</void>
<void method="connect">
<object class="com.horstmann.violet.ClassRelationshipEdge">
<void property="bentStyle">
<object class="com.horstmann.violet.BentStyle" field="VHV"/>
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<string>volume_id : char*
publisher_id : char*
data_preparer_id : char*
system_id : char*
application_id : char*
copyright_file_id : char*
abstract_file_id : char*
biblio_file_id : char*</string>
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attribs : struct stat
hidden : enum</string>
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<string>add(XXX)
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children()</string>
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<string>&lt;&lt;static&gt;&gt;new(id)
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<string>In addition to the dest as a path, it could
be a good idea to have a ref to tree node.
That way we can compute the dest on creation
time, and thus links to files on image are also valid
after moving or renaming those files</string>
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</void>
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<string>Image is a context for the creation of images. Its &quot;static&quot;
methods, new() and read() are used to create a new
image context, either from scratch or from an existing
image (for example, a ms disc). The methods create() and
grow() return an BurnSource suitable for libburn.
create() writes a full image, grow() only add to the image
the new files, thus it is suitable for a new session
</string>
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<string>Class diagram for the public tree. Note that getters and setters are not shown,
to improve readability. Note also that not all the attributes will have public getters
or/and setters.
El-Torito related information is shown in another diagram.
We don&apos;t show the several functions in Dir to manage the tree.</string>
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<void property="text">
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<void property="name">
<void property="text">
<string>«interface»
Filters</string>
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</void>
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<void property="name">
<string>filters</string>
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<double>710.0</double>
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<string>TransformStream</string>
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open()
close()
is_repeatable()</string>
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<void property="text">
<string>For files, we need to know whethe they come
from a previous session. That&apos;s the purpose of
the block field</string>
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</void>
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<string>1 volume</string>
</void>
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<object class="com.horstmann.violet.ArrowHead" field="BLACK_DIAMOND"/>
</void>
</object>
<object idref="ClassNode6"/>
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<object class="com.horstmann.violet.BentStyle" field="VHV"/>
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<object class="com.horstmann.violet.ArrowHead" field="TRIANGLE"/>
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<object class="com.horstmann.violet.LineStyle" field="DOTTED"/>
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<void property="endArrowHead">
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<void property="lineStyle">
<object class="com.horstmann.violet.LineStyle" field="DOTTED"/>
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<void property="middleLabel">
<string>{create}</string>
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<void property="endArrowHead">
<object class="com.horstmann.violet.ArrowHead" field="V"/>
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<string>0..1</string>
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<object idref="ClassNode6"/>
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<object class="com.horstmann.violet.BentStyle" field="VH"/>
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<void property="endArrowHead">
<object class="com.horstmann.violet.ArrowHead" field="V"/>
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<void property="endLabel">
<string>* children</string>
</void>
<void property="startArrowHead">
<object class="com.horstmann.violet.ArrowHead" field="BLACK_DIAMOND"/>
</void>
</object>
<object idref="ClassNode3"/>
<object idref="ClassNode2"/>
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<object class="com.horstmann.violet.BentStyle" field="HVH"/>
</void>
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<object class="com.horstmann.violet.ArrowHead" field="V"/>
</void>
<void property="endLabel">
<string>1 root</string>
</void>
<void property="startArrowHead">
<object class="com.horstmann.violet.ArrowHead" field="BLACK_DIAMOND"/>
</void>
</object>
<object idref="ClassNode0"/>
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<object class="com.horstmann.violet.BentStyle" field="VHV"/>
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<object class="com.horstmann.violet.ArrowHead" field="TRIANGLE"/>
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<object idref="ClassNode4"/>
<object idref="ClassNode2"/>
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<object class="com.horstmann.violet.BentStyle" field="VHV"/>
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<object idref="ClassNode1"/>
<object idref="ClassNode2"/>
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<void method="connect">
<object class="com.horstmann.violet.ClassRelationshipEdge">
<void property="bentStyle">
<object class="com.horstmann.violet.BentStyle" field="VHV"/>
</void>
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<object class="com.horstmann.violet.ArrowHead" field="TRIANGLE"/>
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</object>
<object idref="ClassNode5"/>
<object idref="ClassNode2"/>
</void>
<void method="connect">
<object class="com.horstmann.violet.ClassRelationshipEdge">
<void property="bentStyle">
<object class="com.horstmann.violet.BentStyle" field="VHV"/>
</void>
<void property="endArrowHead">
<object class="com.horstmann.violet.ArrowHead" field="TRIANGLE"/>
</void>
</object>
<object idref="ClassNode3"/>
<object idref="ClassNode2"/>
</void>
<void method="connect">
<object class="com.horstmann.violet.ClassRelationshipEdge">
<void property="endArrowHead">
<object class="com.horstmann.violet.ArrowHead" field="V"/>
</void>
<void property="endLabel">
<string>1 parent</string>
</void>
</object>
<object idref="ClassNode2"/>
<object idref="ClassNode3"/>
</void>
<void method="connect">
<object class="com.horstmann.violet.ClassRelationshipEdge">
<void property="bentStyle">
<object class="com.horstmann.violet.BentStyle" field="VHV"/>
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<object class="com.horstmann.violet.ArrowHead" field="TRIANGLE"/>
</void>
<void property="lineStyle">
<object class="com.horstmann.violet.LineStyle" field="DOTTED"/>
</void>
</object>
<object idref="ClassNode8"/>
<object idref="InterfaceNode3"/>
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<void method="connect">
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<object class="com.horstmann.violet.BentStyle" field="VHV"/>
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<object class="com.horstmann.violet.ArrowHead" field="TRIANGLE"/>
</void>
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<object class="com.horstmann.violet.LineStyle" field="DOTTED"/>
</void>
</object>
<object idref="ClassNode11"/>
<object idref="InterfaceNode3"/>
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<object class="com.horstmann.violet.BentStyle" field="VH"/>
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<object class="com.horstmann.violet.ArrowHead" field="V"/>
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<void property="endLabel">
<string>1</string>
</void>
<void property="startArrowHead">
<object class="com.horstmann.violet.ArrowHead" field="BLACK_DIAMOND"/>
</void>
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<object idref="ClassNode8"/>
<object idref="InterfaceNode3"/>
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<void property="bentStyle">
<object class="com.horstmann.violet.BentStyle" field="VHV"/>
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<void property="endArrowHead">
<object class="com.horstmann.violet.ArrowHead" field="TRIANGLE"/>
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<void property="lineStyle">
<object class="com.horstmann.violet.LineStyle" field="DOTTED"/>
</void>
</object>
<object idref="ClassNode10"/>
<object idref="InterfaceNode3"/>
</void>
<void method="connect">
<object class="com.horstmann.violet.ClassRelationshipEdge">
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NOTES:
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View File

@ -0,0 +1,119 @@
===============================================================================
ISO/IEC 9660:1999 Cookbook
===============================================================================
Creation date: 2008-Jan-14
Author: Vreixo Formoso
_______________________________________________________________________________
Contents:
---------
1. References
2. General
3. Features
4. Implementation
5. Known implementation bugs and specification ambiguities/problems
-------------------------------------------------------------------------------
1. References:
ISO/IEC DIS 9660:1999(E) "Information processing. Volume and file structure of
CD­-ROM for Information Interchange"
-------------------------------------------------------------------------------
2. General
ISO 9660:1999, also known as ISO-9660 version 2 is an update of the old
ISO 9660:1988 standard for writing data images for CD.
In the same way Joliet does, it is based on a Secondary Volume Descriptor (that
is called Enhanced Volume Descriptor), that provides a second tree where the
new file information is recorded.
-------------------------------------------------------------------------------
3. Features
It makes some improvements with respect to ECMA-119, mainly related to relax
the constraints imposed by its predecessor.
- It removes the limit to the deep of the directory hierarchy (6.8.2.1).
However, it still keep a limit to the path length, of 255 characters as in
ECMA-119.
- File names don't need the version number (;1) anymore, and the "." and ";",
used as SEPARATORS for extension and version number, have no special meaning
now.
- The file name max length is incremented to 207 bytes.
- The file name is not restricted to d-characters.
-------------------------------------------------------------------------------
4. Implementation
ISO 9660:1999 is very similar to old ISO 9660:1988 (ECMA-119). It needs two
tree hierarchies: one, identified by the Primary Volume Descriptor, is recorded
in the same way that an ECMA-119 structure.
The second structure is identified by a Enhanced Volume Descriptor (8.5). The
structure is exactly like defined in ECMA-119, with the exceptions named above.
Thus, to write an ISO 9660:1999:
- First 16 blocks are set to 0.
- Block 16 identifies a PVD (8.4), associated with a directory structure
written following ECMA-119.
- It is needed a Enhanced Volume descriptor to describe the additional
structure. It is much like a SVD, with version number set to 2 to identify
this new version.
- We can also write boot records (El-Torito) and additional SVD (Joliet).
- We write a Volume Descriptor Set Terminator (8.3)
- We write directory structure and path tables (L and M) for both ECMA-119
tree and enhanced tree. Path table record and directory record format is
the same in both structures. However, ECMA-119 is constrained by the usual
restrictions.
- And write the contents of the files.
Interchange levels 1, 2 and 3 are also defined. For PVD tree, they have the
same meaning as in ECMA-119. For EVD tree, in levels 1 and 2 files are
restricted to one file section (i.e., 4 GB filesize limit). In level 3 we can
have more than one section per file. Level 1 does not impose other
restrictions than that in the EVD tree.
It seems that both El-Torito and Joliet can coexist in a ISO 9660:1999 image.
However, Joliet has no utility at all in this kind of images, as it has no
benefit over ISO 9660:1999, and it is more restrictive in filename length.
-------------------------------------------------------------------------------
5. Known implementation bugs and specification ambiguities/problems
- While the specification clearly states that the tree speficied by the Primary
Volume Descriptor should remain compatible with ISO-9660 (ECMA-119), i.e., it
should be constrained by ECMA-119 restrictions, some image generation
applications out there just make both Primary and Enhanced Volume Descriptors
to point to the same directory structure. That is a specification violation, as
for a) the directory hierarchy specified in the Primary Volume Descriptor
doesn't follow the restrictions specified in the specs, and b) the same
directories are part of two different hiearchies (6.8.3 "A directory shall not
be a part of more than one Directory Hierarchy.").
Thus, we should keep two trees as we do with Joliet. Or are there strong
reasons against this?
- It's not very clear what characters are allowed for files and dir names. For
the tree identified in the Enhanced Volume Descriptor, it seems that a
"sequence of characters rather than d-characters or d1-characters" is allowed.
It also seems that the charset is determined by the escape sequence in the
EVD. Anyway, leaving escape sequence to 0 and use any user-specified sequence
(such as UTF-8) seems a good solution and is what many other applications do.
Linux correctly mounts the images in this case.
- It is not clear if RR extensions are allowed in the tree identified by the
Enhanced Volume Descriptor. However, it seems not a good idea. With 207 bytes
filenames and XA extensions, there is no place for RR entries in the directory
records of the enhanced tree. In my opinion, RR extension should be attached to
the ECMA-119 tree that must also be written to image.