Blame Manuals/en/Html/Repository/repository_40.html

4c79b5
4c79b5
<html>
09d4f2
09d4f2
09d4f2
The CentOS Artwork Repository exists to organize and automate The
09d4f2
CentOS Project corporate visual identity (, to
09d4f2
start on).
4c79b5
6c4982
Copyright C 2009, 2010 Alain Reguera Delgado. All rights
4c79b5
reserved.
4c79b5
4c79b5
Permission is granted to copy, distribute and/or modify this document
4c79b5
under the terms of the GNU Free Documentation License, Version 1.2 or
4c79b5
any later version published by the Free Software Foundation; with no
4c79b5
Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A
4c79b5
copy of the license is included in the section entitled GNU Free
4c79b5
Documentation License.  
4c79b5
-->
008ee0
4c79b5
4c79b5
Written by: Lionel Cons <Lionel.Cons@cern.ch> (original author)
4c79b5
            Karl Berry  <karl@freefriends.org>
4c79b5
            Olaf Bachmann <obachman@mathematik.uni-kl.de>
4c79b5
            and many others.
4c79b5
Maintained by: Many creative people <dev@texi2html.cvshome.org>
4c79b5
Send bugs and suggestions to <users@texi2html.cvshome.org>
4c79b5
4c79b5
-->
4c79b5
<head>
63f275
<title>CentOS Artwork Repository: 3.37 trunk/Scripts/Bash/Functions</title>
4c79b5
63f275
<meta name="description" content="CentOS Artwork Repository: 3.37 trunk/Scripts/Bash/Functions">
63f275
<meta name="keywords" content="CentOS Artwork Repository: 3.37 trunk/Scripts/Bash/Functions">
4c79b5
<meta name="resource-type" content="document">
4c79b5
<meta name="distribution" content="global">
4c79b5
<meta name="Generator" content="texi2html 1.76">
4c79b5
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
4c79b5
<style type="text/css">
4c79b5
1e9202
@import "/home/centos/artwork/trunk/Identity/Models/Css/Texi2html/common.css";
4c79b5
4c79b5
a.summary-letter {text-decoration: none}
4c79b5
pre.display {font-family: serif}
4c79b5
pre.format {font-family: serif}
4c79b5
pre.menu-comment {font-family: serif}
4c79b5
pre.menu-preformatted {font-family: serif}
4c79b5
pre.smalldisplay {font-family: serif; font-size: smaller}
4c79b5
pre.smallexample {font-size: smaller}
4c79b5
pre.smallformat {font-family: serif; font-size: smaller}
4c79b5
pre.smalllisp {font-size: smaller}
4c79b5
span.sansserif {font-family:sans-serif; font-weight:normal;}
4c79b5
ul.toc {list-style: none}
4c79b5
-->
4c79b5
</style>
4c79b5
4c79b5
4c79b5
</head>
4c79b5
4c79b5
<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
4c79b5
4c79b5
008ee0
[ < ]
008ee0
[ > ]
4c79b5
   
4c79b5
[ << ]
4c79b5
[ Up ]
60c152
[ >> ]
4c79b5
   
4c79b5
   
4c79b5
   
4c79b5
   
4c79b5
[Top]
4c79b5
[Contents]
60c152
[Index]
4c79b5
[ ? ]
4c79b5
63f275
008ee0
63f275

3.37 trunk/Scripts/Bash/Functions

4c79b5
4c79b5
008ee0
6ba043

3.37.1 Goals

6ba043
63f275

The <tt>`trunk/Scripts/Bash/Functions'</tt> directory exists to organize

63f275
<tt>`centos-art.sh'</tt> specific functionalities.
54b5a5

6ba043
008ee0
6ba043

3.37.2 Description

6ba043
63f275

The specific functions of <tt>`centos-art.sh'</tt> script are designed

63f275
with "Software Toolbox" philosophy (see (coreutils.info)Toolbox introduction) in mind: each program "should do one
63f275
thing well".  Inside <tt>`centos-art.sh'</tt> script, each specific
63f275
functionality is considered a program that should do one thing well.
63f275
Of course, if you find that they still don't do it, feel free to
63f275
improve them in order for them to do so.
63f275

63f275

The specific functions of <tt>`centos-art.sh'</tt> script are organized

63f275
inside specific directories under <tt>`trunk/Scripts/Bash/Functions'</tt>
63f275
location. Each specific function directory should be named as the
63f275
function it represents, with the first letter in uppercase. For
63f275
example, if the function name is render, the specific function
63f275
directory for it would be <samp>`trunk/Scripts/Bash/Functions/Render'</samp>.
63f275

63f275

To better understand how specific functions of <tt>`centos-art.sh'</tt>

63f275
script are designed, lets create one function which only goal is to
63f275
output different kind of greetings to your screen.
63f275

63f275

When we create specific functions for <tt>`centos-art.sh'</tt> script it

63f275
is crucial to know what these functions will do exactly and if there
63f275
is any function that already does what we intend to do. If there is no
63f275
one, it is good time to create them then. Otherwise, if
63f275
functionalities already available don't do what you exactly expect,
63f275
contact their authors and work together to improve them.
63f275

63f275
Info

Tip

Join CentOS developers mailing list

63f275
centos-art@centos.org to share your ideas.
63f275

63f275
63f275

It is also worth to know what global functions and variables do we

63f275
have available inside <tt>`centos-art.sh'</tt> script, so advantage can be
63f275
taken from them. Global variables are defined inside global function
63f275
scripts. Global functions scripts are stored immediatly under
63f275
<tt>`trunk/Scripts/Bash/Functions'</tt> directory, in files begining with
63f275
<samp>`cli'</samp> prefix.
63f275

63f275

OK, let's begin with our functionality example.

63f275

63f275

What function name do we use? Well, lets use greet. Note that

63f275
<samp>`hello'</samp> word is not a verb; but an expression, a kind of
63f275
greeting, an interjection specifically. In contrast, <samp>`greet'</samp> is a
63f275
verb and describes what we do when we say <samp>`Hello!'</samp>, <samp>`Hi!'</samp>,
63f275
and similar expressions.
63f275

63f275

So far, we've gathered the following function information:

63f275

63f275
Name: greet
63f275
Path: trunk/Scripts/Bash/Functions/Greet
63f275
File: trunk/Scripts/Bash/Functions/Greet/greet.sh
63f275
63f275

The <tt>`greet.sh'</tt> function script is the first file

63f275
<tt>`centos-art.sh'</tt> script loads when the <samp>`greet'</samp> functionality
63f275
is called using commands like <samp>`centos-art greet --hello='World''</samp>.
63f275
The <tt>`greet.sh'</tt> function script contains the greet function
63f275
definition. 
63f275

63f275

Inside <tt>`centos-art.sh'</tt> script, as convenction, each function

63f275
script has one top commentary, followed by one blank line, and then
63f275
one function defintion below it only.
63f275

63f275

Inside <tt>`centos-art.sh'</tt> script functions, top commentaries have

63f275
the following components: the functionality description, one-line for
63f275
copyright note with your personal information,  the license under
63f275
which the function source code is released --the <tt>`centos-art.sh'</tt>
63f275
script is released as GPL, so do all its functions--, subversion's
63f275
$Id$ keyword which is later expanded by svn propset
63f275
command.
63f275

63f275

In our greet function example, top commentary for

63f275
<tt>`greet.sh'</tt> function script would look like the following:
63f275

63f275
#!/bin/bash
63f275
#
63f275
# greet.sh -- This function outputs different kind of greetings to
63f275
# your screen. Use this function to understand how centos-art.sh
63f275
# script specific functionalities work.
63f275
#
63f275
# Copyright (C) YEAR YOURFULLNAME
63f275
#
63f275
# This program is free software; you can redistribute it and/or modify
63f275
# it under the terms of the GNU General Public License as published by
63f275
# the Free Software Foundation; either version 2 of the License, or
63f275
# (at your option) any later version.
63f275
# 
63f275
# This program is distributed in the hope that it will be useful, but
63f275
# WITHOUT ANY WARRANTY; without even the implied warranty of
63f275
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
63f275
# General Public License for more details.
63f275
#
63f275
# You should have received a copy of the GNU General Public License
63f275
# along with this program; if not, write to the Free Software
63f275
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
63f275
# USA.
63f275
# 
63f275
# ----------------------------------------------------------------------
63f275
# $Id$
63f275
# ----------------------------------------------------------------------
63f275
63f275

After top commentary, separated by one blank line, the greet

63f275
function definition would look like the following:
63f275

63f275
function greet {
63f275
63f275
    # Define global variables.
63f275
63f275
    # Define command-line interface.
63f275
    greet_getActions
63f275
63f275
}
63f275
63f275

The first definition inside greet function, are global

63f275
variables that will be available along greet function execution
63f275
environment. This time we didn't use global variable definitions for
63f275
greet function execution environment, so we left that section
63f275
empty.
63f275

63f275

Later, we call greet_getActions function to define the

63f275
command-line interface of greet functionality. The greet
63f275
functionality command-line interface defines what and how actions are
63f275
performed, based on arguments combination passed to
63f275
<tt>`centos-art.sh'</tt> script.
63f275

63f275
function greet_getActions {
63f275
63f275
    case "$ACTIONNAM" in
63f275
63f275
        --hello )
63f275
            greet_doHello
63f275
            ;;
63f275
63f275
        --bye )
63f275
            greet_doBye
63f275
            ;;
63f275
63f275
        * )
63f275
            cli_printMessage "`gettext "The option provided is not valid."`"
63f275
            cli_printMessage "$(caller)" 'AsToKnowMoreLine'
63f275
63f275
    esac
63f275
63f275
}
63f275
63f275

The ACTIONNAM global variable is defined in <tt>`cli.sh'</tt>

63f275
function script and contains the value passed before the equal sign
63f275
(i.e., <samp>`='</samp>) in the second command-line argument of
63f275
<tt>`centos-art.sh'</tt> script. For example, if the second command-line
63f275
argument is <samp>`--hello='World''</samp>, the value of ACTIONNAM
63f275
variable would be <samp>`--hello'</samp>.  Using this configuration let us
63f275
deside which action to perform based on the action name passed to
63f275
<tt>`centos-art.sh'</tt> script as second argument. 
63f275

63f275

The greet function definition makes available two valid

63f275
greetings through <samp>`--hello'</samp> and <samp>`--bye'</samp> options.  If no
63f275
one of them is provided as second command-line argument, the <samp>`*'</samp>
63f275
case is evaluated instead. 
63f275

63f275

The <samp>`*'</samp> case and its two further lines should always be present

63f275
in <tt>`_getActions.sh'</tt> function scripts, no matter what specific
63f275
functionality you are creating. This convenction helps the user to
63f275
find out documentation about current functionality in use.  
63f275

63f275

The greet_doHello and greet_doBye function definitions

63f275
are the core of greet specific functionality.  In such function
63f275
definitions we set what our greet function really does: to
63f275
output different kinds of greetings.
63f275

63f275
function greet_doHello {
63f275
63f275
    cli_printMessage "`gettext "Hello"` $ACTIONVAL"
63f275
63f275
}
63f275
63f275

The greet_doHello function definition is stored in

63f275
<tt>`greet_doHello.sh'</tt> function script. 
63f275

63f275
function greet_doBye {
63f275
63f275
    cli_printMessage "`gettext "Goodbye"` $ACTIONVAL"
63f275
63f275
}
63f275
63f275

The greet_doBye function definition is stored in the

63f275
<tt>`greet_doBye.sh'</tt> function script. 
63f275

63f275

Both <tt>`greet_doHello.sh'</tt> and <tt>`greet_doBye.sh'</tt> function

63f275
scripts are stored inside greet's function directory path (i.e.
63f275
<tt>`trunk/Scripts/Bash/Functions/Greet'</tt>).
63f275

63f275

The ACTIONVAL global variable is defined in <tt>`cli.sh'</tt>

63f275
function script and contains the value passed after the equal sign
63f275
(i.e., <samp>`='</samp>) in the second command-line argument of
63f275
<tt>`centos-art.sh'</tt> script. For example, if the second command-line
63f275
argument is <samp>`--hello='World''</samp>, the value of ACTIONVAL
63f275
variable would be <samp>`World'</samp> without quotes.
63f275

63f275

Let's see how greet specific functionality files are organzied

63f275
under greet's function directory. To see file organization we
63f275
use the tree command:
63f275

63f275
trunk/Scripts/Bash/Functions/Greet
63f275
|-- greet_doBye.sh
63f275
|-- greet_doHello.sh
63f275
|-- greet_getActions.sh
63f275
`-- greet.sh
63f275
63f275

To try the greet specific functionality we've just created,

63f275
pass the function name (i.e., <samp>`greet'</samp>) as first argument to
63f275
<tt>`centos-art.sh'</tt> script, and any of the valid options as second
63f275
argument. Some examples are illustrated below:
63f275

63f275
[centos@projects ~]$ centos-art greet --hello='World'
63f275
Hello World
63f275
[centos@projects ~]$ centos-art greet --bye='World'
63f275
Goodbye World
63f275
[centos@projects ~]$ 
63f275
63f275

The word <samp>`World'</samp> in the examples above can be anything. In fact,

63f275
change it to have a little fun.
63f275

63f275

Now that we have a specific function that works as we expect, it is

63f275
time to document it. To document greet specific functionality,
831389
we use its directory path and the manual functionality
60c152
(WARNING: The <samp>`trunk Scripts Bash Functions Manual'</samp> documentation entry no longer exists.) of <tt>`centos-art.sh'</tt>
831389
script, just as the following command illustrates: 
63f275

63f275
centos-art help --edit=trunk/Scripts/Bash/Functions/Greet
63f275
63f275

Now that we have documented our function, it is time to translate its

63f275
output messages to different languages. To translate specific
63f275
functionality output messages to different languages we use the
e68a7a
locale functionality (see section trunk/Scripts/Bash/Functions/Locale) of <tt>`centos-art.sh'</tt> script, just as the following command
63f275
illustrates:
63f275

63f275
centos-art locale --edit
63f275
63f275
Warning

Warning

To translate output messages in different languages,

63f275
your system locale information --as in LANG environment
63f275
variable-- must be set to that locale you want to produce translated
63f275
messages for. For example, if you want to produce translated messages
63f275
for Spanish language, your system locale information must be set to
63f275
<samp>`es_ES.UTF-8'</samp> or similar.  
63f275

6ba043
63f275

Well, it seems that our example is rather complete by now.

63f275

63f275

In greet function example we've described so far, we only use

63f275
cli_printMessage global function in action specific function
63f275
definitions in order to print a message simply, but more interesting
63f275
things can be achieved inside action specific function definitions.
63f275
For example, if you pass a directory path as second argument option
63f275
value, you could retrive a list of files from therein, and process
63f275
them. If the list of files turns too long or you just want to control
63f275
which files to process, you could add the third argument in the form
63f275
<samp>`--filter='regex''</samp> and reduce the amount of files to process
63f275
using a regular expression pattern.
63f275

63f275

The greet function described in this section may serve you as

63f275
an introduction to understand how specific functionalities work inside
63f275
<tt>`centos-art.sh'</tt> script. With some of luck this introduction will
63f275
also serve you as motivation to create your own <tt>`centos-art.sh'</tt>
63f275
script specific functionalities.
63f275

63f275

By the way, the greet functionality doesn't exist inside

63f275
<tt>`centos-art.sh'</tt> script yet. Would you like to create it?
63f275

6ba043
008ee0
6ba043

3.37.3 Usage

6ba043
63f275
63f275
63f275

3.37.3.1 Global variables

63f275
63f275

The following global variables of <tt>`centos-art.sh'</tt> script, are

63f275
available for you to use inside specific functions:
63f275

63f275
63f275
<u>Variable:</u> TEXTDOMAIN
63f275
63f275
63f275

Default domain used to retrieve translated messages. This value is set

63f275
in <tt>`initFunctions.sh'</tt> and shouldn't be changed.
63f275

63f275
63f275
63f275
<u>Variable:</u> TEXTDOMAINDIR
63f275
63f275
63f275

Default directory used to retrieve translated messages. This value is

63f275
set in <tt>`initFunctions.sh'</tt> and shouldn't be changed.
63f275

63f275
63f275
63f275
<u>Variable:</u> FUNCNAM
63f275
63f275
63f275

Define function name.

63f275

63f275

Function names associate sets of actions. There is one set of actions

63f275
for each unique function name inside <tt>`centos-art.sh'</tt> script.
63f275

63f275

Dunction names are passed as first argument in <tt>`centos-art.sh'</tt>

63f275
command-line interface. For example, in the command <samp>`centos-art
63f275
render --entry=path/to/dir --filter=regex'</samp>, the ACTION passed to
63f275
<tt>`centos-art.sh'</tt> script is <samp>`render'</samp>.
63f275

63f275

When first argument is not provided, the <tt>`centos-art.sh'</tt> script

63f275
immediatly ends its execution.
63f275

63f275
63f275
63f275
<u>Variable:</u> ACTIONNAM
63f275
63f275
63f275

Define action name.

63f275

63f275

Each action name identifies an specific action to perform, inside an

63f275
specific function.
63f275

63f275

Action name names aare passed as second argument in

63f275
<tt>`centos-art.sh'</tt> command-line interface. For example, in the
63f275
command <samp>`centos-art render --entry=path/to/dir --filter=regex'</samp>,
63f275
the ACTIONNAM passed to <tt>`centos-art.sh'</tt> script is
63f275
<samp>`--entry'</samp>.
63f275

63f275

When second argument is not provided, the <tt>`centos-art.sh'</tt> script

63f275
immediatly ends its execution.
63f275

63f275
63f275
63f275
<u>Variable:</u> ACTIONVAL
63f275
63f275
63f275

Define action value.

63f275

63f275

Action values are associated to just one action name. Action values

63f275
contain the repository entry over which its associated action will be
63f275
performed in.  Repository entries can be directories, files, or URLs
63f275
refering the repository structure.
63f275

63f275

When action value is not specified as repository entry, the

63f275
<tt>`centos-art.sh'</tt> script evaluates the current directory it was
63f275
executed from. If such directory is under the repository structure
63f275
(i.e., <tt>`/home/centos/artwork/'</tt>), the <tt>`centos-art.sh'</tt> script
63f275
uses that directory as value to ACTIONVAL variable. Otherwise,
63f275
if outside the repository structure, the <tt>`centos-art.sh'</tt> script
63f275
prints the message <samp>`The path provided can't be processed.'</samp> and,
63f275
after it, immediatly ends script execution.
63f275

63f275

Default action value is passed as second argument in

63f275
<tt>`centos-art.sh'</tt> command-line interface. For example, in the
63f275
command <samp>`centos-art render --entry=path/to/dir --filter=regex'</samp>,
63f275
the ACTIONVAL passed to <tt>`centos-art.sh'</tt> script is
63f275
<samp>`path/to/dir'</samp>.
63f275

63f275
63f275
63f275
<u>Variable:</u> REGEX
63f275
63f275
63f275

Define regular expression used as pattern to build the list of files

63f275
to process.
63f275

63f275

By default, REGEX variable is set to .+ to match all

63f275
files.
63f275

63f275

Functions that need to build a list of files to process use the option

63f275
<samp>`--filter'</samp> to redefine REGEX variable default value, and
63f275
so, control the amount of files to process.
63f275

63f275
63f275
63f275
<u>Variable:</u> ARGUMENTS
63f275
63f275
63f275

Define optional arguments.

63f275

63f275

Optional arguments, inside <tt>`centos-art.sh'</tt> script, are considered

63f275
as all command-line arguments passed to <tt>`centos-art.sh'</tt> script,
63f275
from third argument position on. For example, in the command
63f275
<samp>`centos-art render --entry=path/to/dir --filter=regex'</samp> , the
63f275
optional arguments are from <samp>`--filter=regex'</samp> argument on.
63f275

63f275

Optional arguments are parsed using getopt command through

63f275
the following base construction: 
63f275

63f275
# Define short options we want to support.
63f275
local ARGSS=""
63f275
63f275
# Define long options we want to support.
63f275
local ARGSL="filter:,to:"
63f275
63f275
# Parse arguments using getopt(1) command parser.
63f275
cli_doParseArguments
63f275
63f275
# Reset positional parameters using output from (getopt) argument
63f275
# parser.
63f275
eval set -- "$ARGUMENTS"
63f275
63f275
# Define action to take for each option passed.
63f275
while true; do
63f275
    case "$1" in
63f275
        --filter )
63f275
            REGEX="$2" 
63f275
            shift 2
63f275
            ;;
63f275
        --to )
63f275
            TARGET="$2" 
63f275
            shift 2
63f275
            ;;
63f275
        * )
63f275
            break
63f275
    esac
63f275
done
63f275
63f275

Optional arguments provide support to command options inside

63f275
<tt>`centos-art.sh'</tt> script. For instance, consider the Subversion
63f275
(svn) command, where there are many options (e.g.,
63f275
<samp>`copy'</samp>, <samp>`delete'</samp>, <samp>`move'</samp>, etc), and inside each
63f275
option there are several modifiers (e.g., <samp>`--revision'</samp>,
63f275
<samp>`--message'</samp>, <samp>`--username'</samp>, etc.) that can be combined one
63f275
another in their short or long variants. 
63f275

63f275

The ARGUMENTS variable is used to store arguments passed from

63f275
command-line for later use inside <tt>`centos-art.sh'</tt> script. Storing
63f275
arguments is specially useful when we want to run a command with some
63f275
specific options from them. Consider the following command:
63f275

63f275
centos-art path --copy=SOURCE --to=TARGET --message="The commit message goes here." --username='johndoe'
63f275
63f275

In the above command, the <samp>`--message'</samp>, and <samp>`--username'</samp>

63f275
options are specific to svn copy command. In such cases,
63f275
options are not interpreted by <tt>`centos-art.sh'</tt> script itself.
63f275
Instead, the <tt>`centos-art.sh'</tt> script uses getopt to
63f275
retrive them and stores them in the ARGUMENT variable for later
63f275
use, as described in the following command:
63f275

63f275
# Build subversion command to duplicate locations inside the
63f275
# workstation.
63f275
eval svn copy $SOURCE $TARGET --quiet $ARGUMENTS
63f275
63f275

When getopt parses ARGUMENTS, we may use short options

63f275
(e.g., <samp>`-m'</samp>) or long options (e.g., <samp>`--message'</samp>). When
63f275
we use short options, arguments are separated by one space from the
63f275
option (e.g., <samp>`-m 'This is a commit message.''</samp>).  When we use
63f275
long options arguments are separated by an equal sign (<samp>`='</samp>)
63f275
(e.g., <samp>`--message='This is a commit message''</samp>).
63f275

63f275

In order for getopt to parse ARGUMENTS correctly, it

63f275
is required to provide the short and long definition of options that
63f275
will be passed or at least supported by the command performing the
63f275
final action the function script exists for.
63f275

63f275

As convenction, inside <tt>`centos-art.sh'</tt> script, short option

63f275
definitions are set in the ARGSS variable; and long option
63f275
definitions are set in the ARGSL variable.
63f275

63f275

When you define short and long options, it may be needed to define

63f275
which of these option arguments are required and which not. To define
63f275
an option argument as required, you need to set one colon <samp>`:'</samp>
63f275
after the option definition (e.g., <samp>`-o m: -l message:'</samp>).  On
63f275
the other hand, to define an option argument as not required, you need
63f275
to set two colons <samp>`::'</samp> after the option definition (e.g.,
63f275
<samp>`-o m:: -l message::'</samp>).
63f275

63f275
63f275
63f275
<u>Variable:</u> EDITOR
63f275
63f275
63f275

Default text editor.

63f275

63f275

The <tt>`centos-art.sh'</tt> script uses default text EDITOR to edit

63f275
pre-commit subversion messages, translation files, configuration
63f275
files, script files, and similar text-based files.
63f275

63f275

If EDITOR environment variable is not set, <tt>`centos-art.sh'</tt>

63f275
script uses <tt>`/usr/bin/vim'</tt> as default text editor. Otherwise, the
63f275
following values are recognized by <tt>`centos-art.sh'</tt> script:
63f275

54b5a5
    63f275
  • <tt>`/usr/bin/vim'</tt>
  • 63f275
  • <tt>`/usr/bin/emacs'</tt>
  • 63f275
  • <tt>`/usr/bin/nano'</tt>
  • 54b5a5
    008ee0
    63f275

    If no one of these values is set in EDITOR environment variable,

    63f275
    <tt>`centos-art.sh'</tt> uses <tt>`/usr/bin/vim'</tt> text editor by default. 
    63f275

    008ee0
    63f275
    63f275
    63f275

    3.37.3.2 Global functions

    63f275
    63f275

    The following global functions of <tt>`centos-art.sh'</tt> script are

    63f275
    available for you to use inside specific functions:
    63f275

    63f275
    63f275
    <u>Function:</u> cli_commitRepoChanges [LOCATION]
    63f275
    63f275
    63f275

    Syncronize changes between repository and working copy.

    63f275

    63f275

    The cli_commitRepoChanges function uses the value of

    63f275
    LOCATION argument as reference to perform change verification
    63f275
    inside the working copy using subversion commands. If LOCATION
    63f275
    argument is not specified as cli_commitRepoChanges first
    63f275
    argument, the ACTIONVAL variable is used as reference instead.
    63f275

    63f275

    The cli_commitRepoChanges function brings changes from the

    63f275
    repository to the working copy--using svn update--, checks
    63f275
    the working copy changes--using svn status command--,
    63f275
    prints status report--using both svn update and
    63f275
    svn status commands output, and finally, commits recent
    63f275
    changes from the working copy up to the repository--using
    63f275
    svn commit command--.
    63f275

    63f275

    Previous to commit the working copy changes up to the repository, the

    63f275
    cli_commitRepoChanges function asks you to verify
    63f275
    changes--using svn diff command--, and later, another
    63f275
    confirmation question is shown to be sure you really want to commit
    63f275
    changes up to central repository.
    63f275

    63f275
    63f275
    ----------------------------------------------------------------------
    63f275
    --> Bringing changes from the repository into the working copy
    63f275
    --> Checking changes in the working copy
    63f275
    ----------------------------------------------------------------------
    63f275
    Added           0 file from the repository.
    63f275
    Deleted         0 file from the repository.
    63f275
    Updated         0 file from the repository.
    63f275
    Conflicted      0 file from the repository.
    63f275
    Merged          0 file from the repository.
    63f275
    Modified        4 files from the working copy.
    63f275
    Unversioned     0 file from the working copy.
    63f275
    Deleted         0 file from the working copy.
    63f275
    Added           0 file from the working copy.
    63f275
    ----------------------------------------------------------------------
    63f275
    63f275

    Figure 3.9: The cli_commitRepoChanges function output.

    63f275
    63f275

    63f275

    Call the cli_commitRepoChanges function before or/and after

    63f275
    functions that modify files or directories inside the working copy as
    63f275
    you may need to.  
    63f275

    63f275
    63f275
    63f275
    <u>Function:</u> cli_checkFiles FILE [TYPE]
    63f275
    63f275
    63f275

    Verify files existence.

    63f275

    63f275

    cli_checkFiles receives a FILE absolute path and performs

    63f275
    file verification as specified in TYPE.  When TYPE is not
    63f275
    specified, cli_checkFiles verifies FILE existence, no
    63f275
    matter what kind of file it be.  If TYPE is specified, use one
    63f275
    of the following values:
    63f275

    63f275
    63f275
    <samp>`d'</samp>
    63f275
    <samp>`directory'</samp>
    63f275

    Ends script execution if FILE is not a directory.

    63f275

    63f275

    When you verify directories with cli_checkFiles, if directory doesn't

    63f275
    exist, <tt>`centos-art.sh'</tt> script asks you for confirmation in order
    63f275
    to create that directory. If you answer positively,
    63f275
    <tt>`centos-art.sh'</tt> script creates that directory and continues
    63f275
    script flows normally. Otherwise, if you answer negatively,
    63f275
    <tt>`centos-art.sh'</tt> ends script execution with an error and
    63f275
    documentation message.
    63f275

    63f275
    63f275
    <samp>`f'</samp>
    63f275
    <samp>`regular-file'</samp>
    63f275

    Ends script execution if FILE is not a regular file.

    63f275

    63f275
    <samp>`h'</samp>
    63f275
    <samp>`symbolic-link'</samp>
    63f275

    Ends script execution if FILE is not a symbolic link.

    63f275

    63f275
    <samp>`x'</samp>
    63f275
    <samp>`execution'</samp>
    63f275

    Ends script execution if FILE is not executable.

    63f275

    63f275
    <samp>`fh'</samp>
    63f275

    Ends script execution if FILE is neither a regular file or a

    63f275
    symbolic link.
    63f275

    63f275
    63f275
    63f275

    As default behaviour, if FILE passes all verifications,

    63f275
    <tt>`centos-art.sh'</tt> script continues with its normal flow. 
    63f275

    63f275
    63f275
    63f275
    <u>Function:</u> cli_getCountryCodes [FILTER]
    63f275
    63f275
    63f275

    Output country codes.

    63f275

    63f275

    The cli_getCountryCodes function outputs a list with country

    63f275
    codes as defined in ISO3166 standard. When FILTER is provided,
    63f275
    cli_getCountryCodes outputs country codes that match
    63f275
    FILTER regular expression pattern.
    63f275

    63f275
    63f275
    63f275
    <u>Function:</u> cli_getCountryName [FILTER]
    63f275
    63f275
    63f275

    Output country names.

    63f275

    63f275

    The cli_getCountryName function reads one language locale code

    63f275
    in the format LL_CC and outputs the name of its related country as in
    63f275
    ISO3166. If filter is specified, cli_getCountryName returns the
    63f275
    country name that matches the locale code specified in FILTER,
    63f275
    exactly.
    63f275

    63f275

    The cli_getCountryName function outputs country name supported

    63f275
    by <tt>`centos-art.sh'</tt> script.
    63f275

    63f275
     
    63f275
    63f275
    <u>Function:</u> cli_getCurrentLocale
    63f275
    63f275
    63f275

    Output current locale used by <tt>`centos-art.sh'</tt> script.

    63f275

    63f275

    The cli_getCurrentLocale function uses LANG environment

    63f275
    variable to build a locale pattern that is later applied to
    63f275
    cli_getLocales function output in order to return the current
    63f275
    locale that <tt>`centos-art.sh'</tt> script works with. 
    63f275

    63f275

    The current locale information, returned by

    63f275
    cli_getCurrentLocale, is output from more specific to less
    63f275
    specific. For example, if <samp>`en_GB'</samp> locale exists in
    63f275
    cli_getLocales function output, the <samp>`en_GB'</samp> locale would
    63f275
    take precedence before <samp>`en'</samp> locale.
    63f275

    63f275

    Locale precedence selection is quite important in order to define the

    63f275
    locale type we use for message translations. For example, if
    63f275
    <samp>`en_GB'</samp> is used, we are also saying that no common language
    63f275
    specification is used for English language (i.e., <samp>`en'</samp>). Instead,
    63f275
    we are using English non-common country-specific language
    63f275
    specifications like <samp>`en_AU'</samp>, <samp>`en_BW'</samp>, <samp>`en_GB'</samp>,
    63f275
    <samp>`en_US'</samp>, etc., for message translations.  
    63f275

    63f275

    Use cli_getCurrentLocale function to know what current locale

    63f275
    information to use inside <tt>`centos-art.sh'</tt> script.
    63f275

    63f275

    The cli_getCurrentLocale function outputs current locale used

    63f275
    by <tt>`centos-art.sh'</tt> script.
    63f275

    63f275
    63f275
    63f275
    <u>Function:</u> cli_getLangCodes [FILTER]
    63f275
    63f275
    63f275

    Output language codes.

    63f275

    63f275

    cli_getLangCodes function outputs a list of language codes as

    63f275
    defined in ISO639 standard. When FILTER is provided,
    63f275
    cli_getLangCodes outputs language codes that match FILTER
    63f275
    regular expression pattern.
    63f275

    63f275

    The cli_getLangCodes function outputs language codes supported

    63f275
    by <tt>`centos-art.sh'</tt> script.
    63f275

    63f275
    63f275
    63f275
    <u>Function:</u> cli_getLangName [FILTER]
    63f275
    63f275
    63f275

    Output language names.

    63f275

    63f275

    cli_getLangName function reads one language locale code in the

    63f275
    format LL_CC and outputs the language related name as in ISO639. If
    63f275
    filter is specified, cli_getLangName returns the language name
    63f275
    that matches the locale code specified in FILTER, exactly.
    63f275

    63f275

    The cli_getLangName function outputs language names supported

    63f275
    by <tt>`centos-art.sh'</tt> script.
    63f275

    63f275
    63f275
    63f275
    <u>Function:</u> cli_getLocales
    63f275
    63f275
    63f275

    Output locale codes supported by <tt>`centos-art.sh'</tt> script.

    63f275

    63f275

    Occasionally, you use cli_getLocales function to add locale

    63f275
    information in non-common country-specific language (<samp>`LL_CC'</samp>)
    63f275
    format for those languages (e.g., <samp>`bn_IN'</samp>, <samp>`pt_BR'</samp>, etc.)
    63f275
    which locale differences cannot be solved using common language
    63f275
    specifications (<samp>`LL'</samp>) into one unique common locale specification
    63f275
    (e.g., <samp>`bn'</samp>, <samp>`pt'</samp>, etc.).  
    63f275

    63f275
    63f275
    63f275
    <u>Function:</u> cli_getRepoName NAME TYPE
    63f275
    63f275
    63f275

    Sanitate file names.

    63f275

    63f275

    Inside <tt>`centos-art.sh'</tt> script, specific functionalities rely both

    63f275
    in cli_getRepoName and repository file system organization to
    63f275
    achieve their goals.  Consider cli_getRepoName function as
    63f275
    central place to manage file name convenctions for other functions
    63f275
    inside <tt>`centos-art.sh'</tt> script.
    63f275

    63f275
    Important

    Important

    cli_getRepoName function doesn't verify file

    63f275
    or directory existence, for that purpose use cli_checkFiles
    63f275
    function instead.
    63f275

    63f275
    63f275

    The NAME variable contains the file name or directory name you

    63f275
    want to sanitate.
    63f275

    63f275

    The TYPE variable can be one of the following values:

    63f275

    63f275
    <samp>`d'</samp>
    63f275
    <samp>`directory'</samp>
    63f275

    Sanitate directory NAMEs.

    63f275

    63f275
    <samp>`f'</samp>
    63f275
    <samp>`regular-file'</samp>
    63f275

    Sanitate regular file NAMEs.

    63f275

    63f275
    63f275
    63f275

    Use cli_getRepoName function to sanitate file names and

    63f275
    directory names before their utilization. 
    63f275

    63f275

    Use cli_getRepoName when you need to change file name

    63f275
    convenctions inside <tt>`centos-art.sh'</tt> script. 
    63f275

    63f275

    When changing file name convenctions inside cli_getRepoName

    63f275
    what you are really changing is the way functions interpret repository
    63f275
    file system organization. In order to a complete file name convenction
    63f275
    change, you also need to change file names and directory names inside
    63f275
    repository file system organization, just as you did in
    63f275
    cli_getRepoName function. 
    63f275

    60c152
    info

    Note

    See section trunk/Scripts/Bash/Functions/Path, for more

    63f275
    information on how to rename files and directories massively inside
    63f275
    repository file system organization.
    63f275

    63f275
    63f275
    63f275
    63f275
    <u>Function:</u> cli_getTemporalFile NAME
    63f275
    63f275
    63f275

    Output absolute path to temporal file NAME.

    63f275

    63f275

    cli_getTemporalFile uses <tt>`/tmp'</tt> directory as source

    63f275
    location to store temporal files, the <tt>`centos-art.sh'</tt> script
    63f275
    name, and a random identification string to let you run more than one
    63f275
    <tt>`centos-art.sh'</tt> script simultaneously on the same user session.
    63f275
    For example, due the following temporal file defintion:
    63f275

    63f275
    cli_getTemporalFile $FILE
    63f275
    63f275

    If FILE name is <tt>`instance.svg'</tt> and unique random string is

    63f275
    <samp>`f16f7b51-ac12-4b7f-9e66-72df847f12de'</samp>, the final temporal file,
    63f275
    built from previous temporal file definition, would be:
    63f275

    63f275
    /tmp/centos-art.sh-f16f7b51-ac12-4b7f-9e66-72df847f12de-instance.svg
    63f275
    63f275

    When you use cli_getTemporalFile function to create temporal

    63f275
    files, be sure to remove temporal files created once you've ended up
    63f275
    with them.  For example, consider the following construction:
    63f275

    63f275
    for FILE in $FILES;do
    63f275
    63f275
        # Initialize temporal instance of file.
    63f275
        INSTANCE=$(cli_getTemporalFile $FILE)
    63f275
    63f275
        # Do something ... 
    63f275
    63f275
        # Remove temporal instance of file.
    63f275
        if [[ -f $INSTANCE ]];then
    63f275
            rm $INSTANCE
    63f275
        fi
    63f275
    63f275
    done
    63f275
    63f275

    Use cli_getTemporalFile function whenever you need to create

    63f275
    temporal files inside <tt>`centos-art.sh'</tt> script.
    63f275

    63f275
    63f275
    63f275
    <u>Function:</u> cli_getThemeName
    63f275
    63f275
    63f275

    Output theme name.

    63f275

    63f275

    In order for cli_getThemeName function to extract theme name

    63f275
    correctly, the ACTIONVAL variable must contain a directory path
    63f275
    under <tt>`trunk/Identity/Themes/Motifs/'</tt> directory structure.
    63f275
    Otherwise, cli_getThemeName returns an empty string.  
    63f275

    63f275
    63f275
    63f275
    <u>Function:</u> cli_printMessage MESSAGE [FORMAT]
    63f275
    63f275
    63f275

    Give format to output messages.

    63f275

    63f275

    When FORMAT is not specified, cli_printMessage outputs

    63f275
    information just as it was passed in MESSAGE variable.
    63f275
    Otherwise, FORMAT can take one of the following values:
    63f275

    63f275
    63f275
    <samp>`AsHeadingLine'</samp>
    63f275

    To print heading messages.

    63f275

    ----------------------------------------------------------------------
    63f275
    $MESSAGE
    63f275
    ----------------------------------------------------------------------
    63f275
    63f275
    63f275
    <samp>`AsWarningLine'</samp>
    63f275

    To print warning messages.

    63f275

    ----------------------------------------------------------------------
    63f275
    WARNING: $MESSAGE
    63f275
    ----------------------------------------------------------------------
    63f275
    63f275
    63f275
    <samp>`AsNoteLine'</samp>
    63f275

    To print note messages.

    63f275

    ----------------------------------------------------------------------
    63f275
    NOTE: $MESSAGE
    63f275
    ----------------------------------------------------------------------
    63f275
    63f275
    63f275
    <samp>`AsUpdatingLine'</samp>
    63f275

    To print <samp>`Updating'</samp> messages using two-columns format.

    63f275

    Updating        $MESSAGE
    63f275
    63f275
    63f275
    <samp>`AsRemovingLine'</samp>
    63f275

    To print <samp>`Removing'</samp> messages using two-columns format.

    63f275

    Removing        $MESSAGE
    63f275
    63f275
    63f275
    <samp>`AsCheckingLine'</samp>
    63f275

    To print <samp>`Checking'</samp> messages using two-columns format.

    63f275

    Checking        $MESSAGE
    63f275
    63f275
    63f275
    <samp>`AsCreatingLine'</samp>
    63f275

    To print <samp>`Creating'</samp> messages using two-columns format.

    63f275

    Creating        $MESSAGE
    63f275
    63f275
    63f275
    <samp>`AsSavedAsLine'</samp>
    63f275

    To print <samp>`Saved as'</samp> messages using two-columns format.

    63f275

    Saved as        $MESSAGE
    63f275
    63f275
    63f275
    <samp>`AsLinkToLine'</samp>
    63f275

    To print <samp>`Linked to'</samp> messages using two-columns format.

    63f275

    Linked to       $MESSAGE
    63f275
    63f275
    63f275
    <samp>`AsMovedToLine'</samp>
    63f275

    To print <samp>`Moved to'</samp> messages using two-columns format.

    63f275

    Moved to        $MESSAGE
    63f275
    63f275
    63f275
    <samp>`AsTranslationLine'</samp>
    63f275

    To print <samp>`Translation'</samp> messages using two-columns format.

    63f275

    Translation     $MESSAGE
    63f275
    63f275
    63f275
    <samp>`AsConfigurationLine'</samp>
    63f275

    To print <samp>`Configuration'</samp> messages using two-columns format.

    63f275

    Configuration   $MESSAGE
    63f275
    63f275
    63f275
    <samp>`AsResponseLine'</samp>
    63f275

    To print response messages using one-column format.

    63f275

    --> $MESSAGE
    63f275
    63f275
    63f275
    <samp>`AsRequestLine'</samp>
    63f275

    To print request messages using one-column format. Request messages

    63f275
    supress the trailing newline character from final output.
    63f275

    $MESSAGE
    63f275
    63f275
    63f275
    <samp>`AsYesOrNoRequestLine'</samp>
    63f275

    To print <samp>`yes or no'</samp> request messages using one-column format. If

    63f275
    something different from <samp>`y'</samp> is answered (when using
    63f275
    en_US.UTF-8 locale), script execution ends immediatly.  
    63f275

    63f275
    $MESSAGE [y/N]:
    63f275
    63f275

    When you are using <tt>`centos-art.sh'</tt> script in a locale different

    63f275
    from en_US.UTF-8, confirmation answer may be different from
    63f275
    <samp>`y'</samp>. For example, if you are using es_ES.UTF-8 locale, the
    63f275
    confirmation question would look like:
    63f275

    63f275
    $MESSAGE [s/N]:
    63f275
    63f275

    and the confirmation answer would be <samp>`s'</samp>, as it is on Spanish

    63f275
    <samp>`sí'</samp> word.
    63f275

    63f275

    Definition of which confirmation word to use is set on translation

    e68a7a
    messages for your specific locale information. See section trunk/Scripts/Bash/Functions/Locale, for more information about locale-specific
    63f275
    translation messages.
    63f275

    63f275
    63f275
    <samp>`AsToKnowMoreLine'</samp>
    63f275

    To standardize <samp>`to know more, run the following command:'</samp>

    63f275
    messages. When the <samp>`AsToKnowMoreLine'</samp> option is used, the
    63f275
    MESSAGE value should be set to "$(caller)". caller
    63f275
    is a Bash builtin that returns the context of the current subroutine
    63f275
    call. <samp>`AsToKnowMoreLine'</samp> option uses caller builtin
    63f275
    output to build documentation entries dynamically.
    63f275

    63f275
    ----------------------------------------------------------------------
    63f275
    To know more, run the following command:
    63f275
    centos-art help --read='path/to/dir'
    63f275
    ----------------------------------------------------------------------
    63f275
    63f275

    Use <samp>`AsToKnowMoreLine'</samp> option after errors and for intentional

    63f275
    script termination. 
    63f275

    63f275
    63f275
    <samp>`AsRegularLine'</samp>
    63f275

    To standardize regular messages using one-column format.

    63f275

    63f275

    When MESSAGE contains a colon inside (e.g., <samp>`description:

    63f275
    message'</samp>), the cli_printMessage function outputs MESSAGE
    63f275
    using two-columns format. 
    63f275

    63f275
    63f275
    63f275
    Info

    Tip

    To improve two-columns format, change the following file:

    63f275

    trunk/Scripts/Bash/Styles/output_forTwoColumns.awk
    63f275
    63f275
    63f275

    Use cli_printMessage function whenever you need to output

    63f275
    information from <tt>`centos-art.sh'</tt> script.
    63f275

    63f275
    63f275
    63f275
    63f275

    3.37.3.3 Specific functions

    63f275
    63f275

    The following specific functions of <tt>`centos-art.sh'</tt> script, are

    63f275
    available for you to use:
    63f275

    63f275
    e68a7a
    3.38 trunk/Scripts/Bash/Functions/Html  
    63f275
    e68a7a
    3.39 trunk/Scripts/Bash/Functions/Locale  
    63f275
    60c152
    3.40 trunk/Scripts/Bash/Functions/Path  
    63f275
    60c152
    3.41 trunk/Scripts/Bash/Functions/Render  
    63f275
    60c152
    3.42 trunk/Scripts/Bash/Functions/Render/Config  
    63f275
    60c152
    3.43 trunk/Scripts/Bash/Functions/Shell  
    63f275
    60c152
    3.44 trunk/Scripts/Bash/Functions/Svg  
    63f275
    60c152
    3.45 trunk/Scripts/Bash/Functions/Verify  
    63f275
    63f275
    63f275
    63f275
    63f275
    6ba043

    3.37.4 See also

    6ba043
    63f275
    63f275
    3.36 trunk/Scripts/Bash  
    63f275
    60c152
    3.46 trunk/Scripts/Bash/Locale  
    63f275
    63f275
    4c79b5
    5fb024
    4c79b5
    63f275
    [ < ]
    63f275
    [ > ]
    4c79b5
       
    4c79b5
    [ << ]
    008ee0
    [ Up ]
    60c152
    [ >> ]
    4c79b5
    4c79b5

    4c79b5
     <font size="-1">
    008ee0
      This document was generated on December, 2 2010 using texi2html 1.76.
    4c79b5
     </font>
    4c79b5
     
    4c79b5
    4c79b5

    4c79b5
    </body>
    4c79b5
    </html>