Merry Xmas (special present inside) Post: 303009984

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The Lounge What is on Your Mind? Merry Xmas (special present inside) Post 303009984 by bakunin on Saturday 23rd of December 2017 10:21:10 PM

12-23-2017

Registered User

Merry Xmas (special present inside)

A Merry Xmas to all of you.

And, as a special present to vbe (he knows why) a little exercise:

Code:

#! /bin/ksh

pPrintSnow ()
{
typeset -i iLen=$1
while (( iLen )) ; do
     if ! (( RANDOM % 31 )) ; then
          printf "%1s" "."
     else
          printf "%1s" " "
     fi
     (( iLen -= 1 ))
done
return 0
}



pPrintTreeLine ()
{
typeset -i iWidth=$1
typeset -i iTermWidth=$COLUMNS
typeset -i iOffset=$(( (iTermWidth - iWidth)/2 ))

pPrintSnow $iOffset
while [ $iWidth -gt 0 ] ; do
     if !   (( RANDOM % 11 )) ; then
          printf "%s" "$(tput sgr0;tput bold)i$(tput sgr0;tput dim)"
     elif ! (( RANDOM %  7 )) ; then
          printf "%s" "O"
     elif ! (( RANDOM % 13 )) ; then
          printf "%s" "O"
     else
          printf "%s" "*"
     fi
     (( iWidth -= 1 ))
done
pPrintSnow $iOffset
printf "\n"

return 0
}



pPrintTrunk ()
{
typeset -i iTrunkWidth=$(( $1 - 2 ))
typeset -i iTrunkHeight=$2
typeset -i iTermWidth=$COLUMNS
typeset -i iOffset=$(( (iTermWidth - iTrunkWidth)/2 ))
typeset -i iCnt=0

if [ $iTrunkWidth -lt 1 ] ; then
     (( iTrunkWidth = 1 ))
     (( iOffset = (iTermWidth - iTrunkWidth ) / 2 ))
fi

while (( iTrunkHeight )) ; do
     if (( iTrunkHeight == 1 )) ; then
          printf "%${iOffset}s/" " "
     else
          printf "%${iOffset}s " " "
     fi
     (( iCnt = iTrunkWidth ))
     while (( iCnt )) ; do
          printf "%s" "|"
          (( iCnt -= 1 ))
     done
     if (( iTrunkHeight == 1 )) ; then
          printf '\\ \n'
     else
          printf '\n'
     fi
     (( iTrunkHeight -= 1 ))
done
return 0
}



# main ()
typeset -i iHeight=$1
typeset -i iCnt=0

eval $(resize)
tput dim
(( iCnt = 1 ))
while [ $iCnt -le $(( iHeight *2 )) ] ; do
     pPrintTreeLine $iCnt
     (( iCnt += 2 ))
done
pPrintTrunk $(( iHeight / 2 )) $(( iHeight / 5 ))
tput sgr0

exit 0

bakunin

Last edited by bakunin; 12-24-2017 at 01:31 AM..

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LEARN ABOUT FREEBSD

clear

TPUT(1) 						    BSD General Commands Manual 						   TPUT(1)

NAME

     tput, clear -- terminal capability interface

SYNOPSIS

     tput [-T term] attribute ...
     clear

DESCRIPTION

     The tput utility makes terminal-dependent information available to users or shell applications.  When invoked as the clear utility, the
     screen will be cleared as if
	   tput clear
     had been executed.  The options to tput are as follows:

     -T      The terminal name as specified in the termcap(5) database, for example, ``vt100'' or ``xterm''.  If not specified, tput retrieves the
	     ``TERM'' variable from the environment.

     The tput utility outputs a string for each attribute that is of type string; a number for each of type integer.  Otherwise, tput exits 0 if
     the terminal has the capability and 1 if it does not, without further action.

     If an attribute is of type string, and takes arguments (e.g. cursor movement, the termcap ``cm'' sequence) the arguments are taken from the
     command line immediately following the attribute.

     The following special attributes are available:

     clear	   Clear the screen (the termcap(5) ``cl'' sequence).

     init	   Initialize the terminal (the termcap(5) ``is'' sequence).

     longname	   Print the descriptive name of the user's terminal type.

     reset	   Reset the terminal (the termcap(5) ``rs'' sequence).

EXIT STATUS

     The exit status of tput is as follows:

     0	     If the last attribute attribute argument is of type string or integer, its value was successfully written to standard output.  If the
	     argument is of type boolean, the terminal has this attribute.

     1	     This terminal does not have the specified boolean attribute.

     2	     Usage error.

     3	     No information is available about the specified terminal type.

SEE ALSO

     termcap(5), terminfo(5)

STANDARDS

     The tput utility conforms to IEEE Std 1003.1-2001 (``POSIX.1'').

HISTORY

     The tput utility appeared in 4.4BSD.

BUGS

     The tput utility cannot really distinguish between different types of attributes.

     Some termcap entries depend upon having a '%' in them that is just a '%' and nothing more.  Right now we just warn about them if they do not
     have a valid type declaration.  These warnings are sent to stderr.

BSD
								   June 15, 2002							       BSD