Read input from Keyboard, do not proceed if no input


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As an addendum...

You will need to work out the error checking for each important field.

For example to gather the email address somebody.something@someaddress.extension you will have to check that it has a valid format. Not to forget that once passed it has to be checked for email validity too.
The above example is valid although does not exist but somebody.somethinATsomeaddress.extension is not.

Anything requiring a number only will have to be checked too although this should be staright forward.
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KABCCLIENT(1)							 KDE User's Manual						     KABCCLIENT(1)

NAME
kabcclient - commandline client for the KDE addressbook SYNOPSIS
kabcclient [[-A] | [-R] | [-M] | [-S] | [-L]] [--match-case] [--nosave] [-ic codec] [-if format] [-if-opts format-options] [-oc codec] [-of format] [-of-opts format-options] [input-data] DESCRIPTION
kabcclient allows commandline access to the KDE addressbook, for example in shell scripts. It supports input from stdin or through additional commandline arguments. Output is always written to stdout. OPTIONS
Operation modes -A, --add Add a new contact entry to the addressbook -R, --remove Removes an existing contact entry from the addressbook -M, --merge Merges input data with an existing contact entry from the addressbook. This appends any new information to the already existing one -S, --search Searches the addressbook for matching contact entries -L, --list Lists all contact entries of the addressbook Input options -ic, --input-codec Pass input text through a specified text encoding. See -ic help for additional information about input codecs. Default is local which will use the codec for the current locale(5) settings -if, --input-format Parses the input text according to given formatting rules. See -if help for available formats. Default is search Instead of reading input text kabcclient can show a dialog for selecting contacts using the input format dialog -if-opts, --input-format-options Additional options for the chosen input format. Can be optional as well as mandatory depending on the format. See -if-opts help for available format options Output options -oc, --output-codec Pass output text through a specified text encoding. See -oc help for additional information about output codecs. Default is local which will use the codec for the current locale(5) settings. -of, --output-format Formats the output text according to given formatting rules. See -of help for available formats. Default is vcard -of-opts, --output-format-options Additional options for the chosen output format. Can be optional as well as mandatory depending on the format. See -of-opts help for available format options Additional options --match-case Use case sensitive text matching when comparing input text with contact entries --nosave Perform information changing operations like -A, -R or -M only in memory but do not write the changes back to the addressbook DIAGNOSTICS
As usual an exit status of zero indicates success. Depending on the chosen operation mode a non-zero exit status indicates a certain problem the application encountered ADD 1 Reading the input text failed 2 Creating a suitable contact entry from the input text failed, e.g. not data or wrongly formatted input for the chosen input format 3 Saving the addressbook changes failed. This can be caused for example by other applications currently locking the addressbook. REMOVE 1 Reading the input text failed 2 The program could not remove any contact entry from the addressbook. This can be caused by failing to parse the input text, failing to find a matching contact entry in the addressbook or finding more than one matching contact entry in the addressbook. In the latter case an error message is written to stderr 3 Saving the addressbook changes failed. This can be caused for example by other applications currently locking the addressbook. MERGE 1 Reading the input text failed 2 The program could not merge the input with any contact entry from the addressbook. This can be caused by failing to parse the input text, failing to find a matching contact entry in the addressbook or finding more than one matching contact entry in the addressbook. In the latter case an error message is written to stderr 3 Saving the addressbook changes failed. This can be caused for example by other applications currently locking the addressbook. SEARCH, 1 Reading the input text failed 2 The program could not find any matching contact entry in the addressbook. This can be caused by failing to parse the input text or failing to find a matching contact entry in the addressbook EXAMPLES
Look for contact entries with Joe in either name or email addresses kabcclient -S Joe Do the same but use case sensitive matching kabcclient --match-case -S Joe Do the same but read input text from stdin echo "Joe" | kabcclient --match-case -S Try to add a new contact entry using data from a formatted email address kabcclient --nosave --add -if email "Marilyn Monroe <mmonroe@moviestars.com>" Do the same but this time really save the changed addressbook kabcclient --add -if email "Marilyn Monroe <mmonroe@moviestars.com>" Listing the available input formats kabcclient -if help Listing the available output formats kabcclient -of help Listing the available options for the 'email' output format kabcclient -of email -of-opts help Listing all email addresses for all contacts containing 'Marilyn' kabcclient -of email -of-opts allemails -S Marilyn Remove all contacts the user selected in the contact selection dialog kabcclient --remove -if dialog Export selected contacts to a VCard (default output format) file kabcclient -S -if dialog > contacts.vcf AUTHOR
This manual page was written by Kevin Krammer <kevin.krammer@gmx.at>. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 2 any later version published by the Free Software Foundation. On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL. AUTHOR
Kevin Krammer <kevin.krammer@gmx.at> Author K Desktop Environment 2005-09-08 KABCCLIENT(1)