@subsection Goals
The @file{trunk/Translations} directory exists to:
@itemize
@item Organize translation files.
@item Organize translation templates used to produce translation files.
@end itemize
@subsection Description
When you create artwork for CentOS distribution you find that some
artworks need to be created for different major releases of CentOS
distribution and inside each major release they need to be created for
different locales. To get an approximate idea of how many files we are
talking about, consider the followig approximate statistic:
@itemize
@item Inside CentOS distribution, there are around 30 images to
rebrand.@footnote{This number is an approximate value and may change.
It is mainly based on CentOS 5 rebranding experience.}
@item There are near to four major releases of CentOS distribution to
rebrand in parallel development.@footnote{This value was taken from
CentOS release schema.}
@item Each CentOS distribution in parallel development supports more
than two hundreds locales.@footnote{This value was taken from the
@command{locale -a} command's output.}
@end itemize
In order to aliviate maintainance of artwork production for such
environment, we divided artwork production in three production lines:
@enumerate
@item @xref{trunk Identity Themes Models}, to define artworks
characteristics (e.g., dimensions, position on the screen, etc.).
@item @xref{trunk Identity Themes Motifs}, to define artworks visual
styles (e.g., the look and feel).
@item Translations, to define which major releases and locales
artworks are produced for.
@end enumerate
Inside CentOS Artwork Repository, the artworks' translation production
line is stored under @file{trunk/Translations} directory.
Inside @file{trunk/Translations} directory, we use ``translation
entries'' to organize artworks' ``translation files'' and artworks'
``translation templates''.
@subsubsection Translation Entries
@cindex Translation paths
@cindex Translation entries
Translation entries exists for each artwork you want to produce.
Translation entries can be empty directories, or directories
containing translation files and translation templates.
When translation entries are empty directories, the identity entry is
used as reference to create file names and directories layout for
rendered files. In this case, the @command{centos-art} script takes
one design template and outputs one non-translated file for each
design template available. This configuration is mainly used to
produce non-translatable artworks like themes' backgrounds.
When translation entries contain translation files, the translation
entry implements the CentOS release schema and is used as reference to
create file names and directories layout for translated artworks. In
this case, the @command{centos-art} script applies one translation
file to one design template to create one translated instance which is
used to output one translated file. When the translated file is
rendered, the @command{centos-art} script remove the previous instance
and takes the next file in the list of translation files to repate the
whole process once again, and so on for all files in the list. This
configuration is mainly used to produce translatable artworks like
Anaconda's progress slide images.
To find out correspondence between translation entries and identity
entries, you need to look the path of both translation entries and
identity entries. For example, if you are using the Modern's artisitic
motif, the identity entry for Anaconda progress artwork is:
@verbatim
trunk/Identity/Themes/Motifs/Modern/Distro/Anaconda/Progress
@end verbatim
and its translation entry is:
@verbatim
trunk/Translations/Identity/Themes/Distro/Anaconda/Progress
@end verbatim
Note how the @file{Translations/} directory prefixes @file{Identity/}
directory, also how static values (e.g., Identity, Themes, Distro,
etc.) in the identity's entry path remain in translation's entry path,
and how variable values like theme names (e.g., Modern) are stript out
from translation's entry path. The same convenction can be applied to
other identity entries in order to determine their translation
entries, or to other translation entries to determine their identity
entries.
@quotation
@strong{Note} Translation entries related to identity entries under
@file{trunk/Identity/Themes/Motifs} do not use @file{Motifs/} in the
path. We've done this because @file{trunk/Identity/Themes/Models}
structure, the other structure under @file{trunk/Identity/Themes},
doesn't require translation paths so far. So in the sake of saving
characters space when building translation entries for
@file{trunk/Identity/Themes/Motifs} structure, we organize Motifs
translation entries under @file{trunk/Translations/Identity/Themes/}
directly.
If for some reason @file{trunk/Identity/Themes/Models} structure
requires translation entries, we need to re-oraganize the current
directory structure accordingly.
@end quotation
Translation entries, as described above, can be re-used by similar
identity entries. For example the following identity entries:
@verbatim
trunk/Identity/Themes/Motifs/Modern/Distro/Anaconda/Progress/
trunk/Identity/Themes/Motifs/TreeFlower/Distro/Anaconda/Progress/
trunk/Identity/Themes/Motifs/Mettle/Distro/Anaconda/Progress/
@end verbatim
are all valid identity entries able to re-use translation files inside
Anaconda progress translation entry (the one shown in our example
above). This way, you can create several identity entries and maintain
just one translation entry for all of them. Once you change the
translation files inside the common translation entry, changes inside
identity entries will take effect inside the next you render them.
Trying to make things plain and simple: inside CentOS Artwork
Repository, graphic designers can concentrate their efforts in
artworks look and feel (the identity entries), and translators in
artworks translations (the translation entries).
@subsubsection Translation Markers
@anchor{trunk:Translations:TranslationMarkers}
@cindex Translation markers
Translation markers are used in ``Theme Model Designs'' and
``Translation Files'' as replacement patterns to commit content
translation. When you are rendering content using
@command{centos-art} script inisde @file{trunk/Identity} structure,
artistic motifs and translation files are applied to model designs to
produce translated content as result. In order to have the appropriate
translation in content rendered, markers defintion in translation
files should match markers in model designs exactly.
@ifnotinfo
@float Figure,fig:trunk:Translations:1
@image{renderImage,,,Translation Markers,png}
@caption{The image rendering flow.}
@end float
@end ifnotinfo
Translation markers can be whatever text you want, but as convenction
we use the following to represent releases of CentOS distribution:
@table @samp
@item =MINOR_RELEASE=
Replace with minor release of CentOS distribution. In the schema M.N, the minor
release is represented by the N letter.
@item =MAJOR_RELEASE=
Replace with major release of CentOS distribution. In the schema M.N,
the major release is represented by the M letter.
@item =RELEASE=
Replace the full release of CentOS distribution. It is
@samp{=MAJOR_RELEASE=.=MINOR_RELEASE=} basically.
@end table
Specific translation markers convenctions are described inside
specific translation entries. Read translation entries documentation
to know more about supported translation markers.
Translation markers standardization creates a common point of
reference for translators and graphic designers. To have translation
markers well defined makes possible that translators and graphic
designers can work together but independently one another.
@subsubsection Translation Files
@cindex Translation files
Translation files are text files with @command{sed}'s commands inside,
replacement commands mainly. As convenction, translation file names
end in @samp{.sed}. Translation files are used by @command{centos-art}
script to produce translated artworks for specific major releases of
CentOS Distribution. There are common translation files, specific
translation, and template translation files.
For example, the Firstboot artwork of CentOS distribution uses the
images @file{splash-small.png} and @file{firstboot-left.png} as based
to control its visual style. The @file{splash-small.png} image
contains, in its graphic design, the release number information of
CentOS distribution. So the @file{splash-small.png} is
release-specific. In the other hand, the @file{firstboot-left.png}
doesn't contain release number information. So the
@file{firstboot-left.png} is not release-specific.
If we want to produce Firstboot artwork for different major releases
of CentOS distribution, using a monolithic visual identity, all
Firstboot images should have the same visual style and, at the same
time, the release-specific information in the release-specific images.
@quotation
@strong{Note} The monolithic visual identity is implemented using
theme models (@pxref{trunk Identity Themes Models}) and artistic
motifs (@pxref{trunk Identity Themes Motifs}).
@end quotation
Assuming that both theme models and theme motifs are ready for using,
the initial translation entry to produce Firstboot artworks would look
like the following:
@verbatim
trunk/Translations/Identity/Themes/Distro/BootUp/Firstboot/
|-- Tpl
| `-- splash-small.sed
`-- firstboot-left.sed
@end verbatim
With the translation entry above, @command{centos-art} command is able
to produce the image @file{firstboot-left.png} only. To produce
@file{splash-small.png} images for major releases (e.g., 3, 4, 5, and
6) of CentOS distribution we need to produce the release-specific
translation files using the @command{centos-art} script as following:
@verbatim
centos-art render --translation=/home/centos/artwork/trunk/Translations/Identity/Themes/BootUp/Firstboot --filter='3,4,5,6'
@end verbatim
The above command produces the following translation entiry:
@verbatim
trunk/Translations/Identity/Themes/Distro/BootUp/Firstboot/
|-- 3
| `-- splash-small.sed
|-- 4
| `-- splash-small.sed
|-- 5
| `-- splash-small.sed
|-- 6
| `-- splash-small.sed
|-- Tpl
| `-- splash-small.sed
`-- firstboot-left.sed
@end verbatim
At this point @command{centos-art} is able to produce the Firstboot
artwork images for major releases of CentOS distribution. To add new
release-specific translation files, run the translation rendering
command with the release number you want to produce translation files
for in the @samp{--filter='release-number'} argument.
@subsubsection Template Translation Files
@cindex Template translation files
Template translation files are translation files stored inside
translation template directory. Template translation files are used by
@command{centos-art} script to produce specific translation files
only. Template translation files may be empty or contain
@command{sed}'s replacement commands. If template translation files
are empty files, the final specifc translation file built from it
contains release-specific replacement commands only. For example,
see the following translation entry:
@verbatim
trunk/Translations/Identity/Themes/Distro/BootUp/Firstboot/
|-- 3
| `-- splash-small.sed
|-- 4
| `-- splash-small.sed
|-- 5
| `-- splash-small.sed
|-- 6
| `-- splash-small.sed
|-- Tpl
| `-- splash-small.sed <-- template translation file.
`-- firstboot-left.sed
@end verbatim
In the above exmaple, the @file{splash-small.sed} file is a template
translation file and looks like:
@verbatim
# -------------------------------------
# $Id: Translations.texi 94 2010-09-18 10:59:42Z al $
# -------------------------------------
@end verbatim
In the above template translation file there are three comments lines,
but when you render it, the @command{centos-art} adds the
release-specific replacement commands. In our Firstboot example, after
rendering Firstboot translation entry, the @file{splash-small.sed}
translation file specific to CentOS 5, looks like the following:
@verbatim
# Warning: Do not modify this file directly. This file is created
# automatically using 'centos-art' command line interface. Any change
# you do in this file will be lost the next time you update
# translation files using 'centos-art' command line interface. If you
# want to improve the content of this translation file, improve its
# template file instead and run the 'centos-art' command line
# interface later to propagate your changes.
# -------------------------------------
# $Id: Translations.texi 94 2010-09-18 10:59:42Z al $
# -------------------------------------
# Release number information.
s!=RELEASE=!=MAJOR_RELEASE=.=MINOR_RELEASE=!g
s!=MINOR_RELEASE=!0!g
s!=MAJOR_RELEASE=!5!g
@end verbatim
If template translation files are not empty, replacement commands
inside template translation files are preserved inside
release-specific translation files. For example, consider the English
template translation file of Anaconda progress welcome slide. The
translation template directory structure looks like the following:
@verbatim
trunk/Translations/Identity/Themes/Distro/Anaconda/Progress/
`-- Tpl
`-- en
`-- 01-welcome.sed
@end verbatim
and if we render translation files for CentOS 4 and CentOS 5 major
releases, the translation entry would look like the following:
@verbatim
trunk/Translations/Identity/Themes/Distro/Anaconda/Progress/
|-- 4
| `-- en
| `-- 01-welcome.sed
|-- 5
| `-- en
| `-- 01-welcome.sed
`-- Tpl
`-- en
`-- 01-welcome.sed
@end verbatim
@quotation
@strong{Note} Release-specific translation directories preserve
template translation directory structure and file names.
@end quotation
In the example above, the template translation file looks like the
following:
@verbatim
# ------------------------------------------------------------
# $Id: Translations.texi 94 2010-09-18 10:59:42Z al $
# ------------------------------------------------------------
s/=TITLE=/Welcome to CentOS =MAJOR_RELEASE= !/
s/=TEXT1=/Thank you for installing CentOS =MAJOR_RELEASE=./
s/=TEXT2=/CentOS is an enterprise-class Linux Distribution derived from sources freely provided to the public by a prominent North American Enterprise Linux vendor./
s/=TEXT3=/CentOS conforms fully with the upstream vendors redistribution policy and aims to be 100% binary compatible. CentOS mainly changes packages to remove upstream vendor branding and artwork./
s/=TEXT4=//
s/=TEXT5=//
s/=TEXT6=//
s!=URL=!http://www.centos.org/!
@end verbatim
and, after render the translation entry, specific translation files
look like the following:
@verbatim
# Warning: Do not modify this file directly. This file is created
# automatically using 'centos-art' command line interface. Any change
# you do in this file will be lost the next time you update
# translation files using 'centos-art' command line interface. If you
# want to improve the content of this translation file, improve its
# template file instead and run the 'centos-art' command line
# interface later to propagate your changes.
# ------------------------------------------------------------
# $Id: Translations.texi 94 2010-09-18 10:59:42Z al $
# ------------------------------------------------------------
s/=TITLE=/Welcome to CentOS =MAJOR_RELEASE= !/
s/=TEXT1=/Thank you for installing CentOS =MAJOR_RELEASE=./
s/=TEXT2=/CentOS is an enterprise-class Linux Distribution derived from sources freely provided to the public by a prominen t North American Enterprise Linux vendor./
s/=TEXT3=/CentOS conforms fully with the upstream vendors redistribution policy and aims to be 100% binary compatible. Cent OS mainly changes packages to remove upstream vendor branding and artwork./
s/=TEXT4=//
s/=TEXT5=//
s/=TEXT6=//
s!=URL=!http://www.centos.org/!
# Release number information.
s!=RELEASE=!=MAJOR_RELEASE=.=MINOR_RELEASE=!g
s!=MINOR_RELEASE=!0!g
s!=MAJOR_RELEASE=!5!g
@end verbatim
In the example above, relevant lines begin with the @samp{s} word
followed by a separation character (e.g., @samp{/}, @samp{!}, etc.).
These lines have the following format:
@verbatim
s/REGEXP/REPLACEMENT/FLAGS
@end verbatim
The @samp{/} characters may be uniformly replaced by any other single
character within any given @command{s} command. The @samp{/}
character (or whatever other character is used in its stead) can
appear in the REGEXP or REPLACEMENT only if it is preceded by a
@samp{\} character.
The @command{s} command is probably the most important in
@command{sed} and has a lot of different options. Its basic concept
is simple: the @command{s} command attempts to match the pattern space
against the supplied REGEXP; if the match is successful, then that
portion of the pattern space which was matched is replaced with
REPLACEMENT.
In the context of our translation files, the REGEXP is where you
define translation markers and REPLACEMENT where you define the
translation text you want to have after artworks rendering. Sometimes
we use the FLAG component with the @samp{g} command to apply the
replacements globally.
@quotation
@strong{Tip} More information about how to use @command{sed}'s
replacement commands and flags is available in @command{sed}'s
documentation manual. To read sed's documentation manual type the
following command:
@verbatim
info sed
@end verbatim
@end quotation
Inside translation files, you can use translation markers not only
inside the REGEXP but in the REPLACEMENT too. In order for this
configuration to work, the REPLACEMENT of translation markers needs to
be define @emph{after} its definition. For example, see in the
release-specific translation file above, how the
@samp{s!=MAJOR_RELASE=!5!g} replacement command is defined
@emph{after} @samp{=MAJOR_RELASE=} translation marker definition in
the REPLACEMENT of @samp{=TITLE=} translation marker replacement
command.
@subsubsection Common Translation Files
@cindex Common translation files
Common translation files contain common translations or no
translation at all for their related artworks. They are in the root
directory of the translation entry. Common translation files create
common artworks for all major releases of CentOS Distribution.
Translation entries, with common translation files inside, look like
the following:
@verbatim
trunk/Translations/Identity/Themes/Distro/BootUp/Firstboot/
|-- 3
| `-- splash-small.sed
|-- 4
| `-- splash-small.sed
|-- 5
| `-- splash-small.sed
|-- 6
| `-- splash-small.sed
|-- Tpl
| `-- splash-small.sed
`-- firstboot-left.sed <-- common translation file.
@end verbatim
@subsubsection Specific Translation Files
@cindex Specific translation files
Specific translation files contain specific translations for their
related artworks. Specific translation files are not in the root
directory of the translation entry, but inside directories which
describe the type of translation they are doing. Specific translation
files are produced automatically using the @command{centos-art}
script.
@verbatim
trunk/Translations/Identity/Themes/Distro/BootUp/Firstboot/
|-- 3
| `-- splash-small.sed <-- CentOS 3 specific translation file.
|-- 4
| `-- splash-small.sed <-- CentOS 4 specific translation file.
|-- 5
| `-- splash-small.sed <-- CentOS 5 specific translation file.
|-- 6
| `-- splash-small.sed <-- CentOS 6 specific translation file.
|-- Tpl
| `-- splash-small.sed
`-- firstboot-left.sed
@end verbatim
@subsubsection Translation Rendering
@cindex Translation rendering
When rendering translations, the @command{centos-art} script checks
the translation entry to verify that it has a translation template
directory inside. The translation template directory (@file{Tpl/})
contains common translation files used to build release-specific
translation files. If the translation template directory doesn't exist
inside the translation entry the translation rendering fails. In this
case the @command{centos-art} script outputs a message and quits
script execution.
@subsubsection Translation (Pre-)Rendering Configuration Scripts
@cindex Translation configuration scripts
@cindex Translation pre-rendering configuration scripts
When the @command{centos-art} script finds a translation template
directory inside translation entry, it looks for translations
pre-rendering configuration scripts for that translation entry.
Translation pre-rendering configuration scripts let you extend
translation's default functionality (described below).
Translation pre-rendering configuration scripts are stored under
@file{trunk/Scripts} directory, specifically under the appropriate
language implementation. If you are using @command{centos-art} Bash's
implementation, the translation pre-rendering scripts are store in the
@file{trunk/Scripts/Bash/Config} location; if you are using
@command{centos-art} Python's implementation, then translation
pre-rendering scripts are stored in the
@file{trunk/Scripts/Python/Config} location, and so on for other
implementations.
Bash's translation pre-rendering configuration scripts look like the
following:
@verbatim
#!/bin/bash
#
# loadConfiguration.sh -- brief description here.
#
# Copyright (C) YEAR YOURNAME
#
# 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
# USA.
#
# ----------------------------------------------------------------------
# $Id: Translations.texi 94 2010-09-18 10:59:42Z al $
# ----------------------------------------------------------------------
function loadConfiguration {
...
}
@end verbatim
Translation pre-rendering scripts are function scripts loaded and
executed when rendering a translation entry. Translation pre-rendering
scripts are loaded using the translation entry being rendered as
reference. For example, suppose you are using the
@command{centos-art} Bash's implementation, and you are rendering
translations for CentOS brands, in this situation the translation
entry would be:
@verbatim
trunk/Translations/Identity/Brands
@end verbatim
and the entry inside the translation pre-rendering configuration
structure would be:
@verbatim
trunk/Scripts/Bash/Config/Identity/Brands
@end verbatim
Once the @command{centos-art} script detects that translation
pre-rendering configuration directory exists, the @command{centos-art}
script looks for the translation pre-rendering configuration file. If
the translation pre-rendering configuration file exists, it is loaded
and executed. Once the translation pre-rendering configuration file
has been executed the translation rendering process is over, and so
the script execution.
@quotation
@strong{Note} Translation pre-rendering configuration files have the
following form:
@verbatim
render.conf.extension
@end verbatim
where @samp{extension} refers the programming language implementation
you are using. For example, @samp{sh} for Bash's, @samp{py} for
Python's, @samp{pl} for Perl's, and so on for other implementations.
@end quotation
As we are using Bash implementation to describe the translation
pre-rendering configuration example, the translation pre-rendering
configuration file that @command{centos-art} looks for, inside the
above translation pre-rendering configuration directory, is
@file{render.conf.sh}.
@subsubsection Translation Rendering Default Functionality
@cindex Translation rendering default functionality
In the other hand, if the translation pre-rendering configuration file
doesn't exist, or it isn't written as function script, the
@command{centos-art} script ignore translation pre-rendering
configuration functionality and passes to render translation using
default functionality instead.
The translation rendering default functionality takes template
translation directory structure, duplicates it for each release number
specified in the @samp{--filter='release-number'} argument and
produces release-specific directories. As part of template translation
duplication process take place, the @command{centos-art} script adds
release-specific replacement commands to each specific translation
file inside release-specific directories. As result, specific
translation files, inside release-specific directories, contain
template translation replacement commands @emph{plus},
release-specific replacement commands.
@quotation
@strong{Note} Release-specific replacement commands are standardized
inside @command{centos-art} script using predifined release
translation markers. Release translation markers are described in the
translation marker section
(@pxref{trunk:Translations:TranslationMarkers, Translation Markers}).
@end quotation
@c --- figure required to illustrate this section.
@subsection Usage
@cindex How to render translation files
@table @samp
@item centos-art render 'path/to/dir'
When @samp{path/to/dir} refers one directory under
@samp{trunk/Translations}, this command orverwrites available
translation files using translation templates.
@item centos-art render 'path/to/dir' --filter='pattern'
When @samp{path/to/dir} refers one directory under
@file{trunk/Translations}, this command renders release-specific
translation files as you specify in the @samp{--filter='pattern'}
argument. In this case, @samp{pattern} not a regular expression but an
number (e.g., @samp{5}) or a list of numbers separated by commas
(e.g., @samp{3,4,5,6}) that specify the major release of CentOS
distribution you want to render translations for.
@end table
@subsection See also
@menu
* trunk Translations Identity Brands::
* trunk Translations Identity Fonts::
* trunk Translations Identity Models::
* trunk Translations Identity Release::
* trunk Translations Identity Themes::
* trunk Identity::
@end menu