echo without newline Post: 302703429

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Top Forums Shell Programming and Scripting echo without newline Post 302703429 by Chubler_XL on Wednesday 19th of September 2012 06:11:48 PM

09-19-2012

Moderator

How about this in bash:

Code:

#!/bin/bash
COLS=0
[ -t 1 ] && COLS=$(tput cols)
 
function show_pct
{
   pct=$1
   [ $COLS -lt 10 ] && return
 
   if [ $pct -lt 0 ]
   then
       printf "\r%-*s\r" $((COLS-2))
       return
   fi
 
   if [ $pct -eq 0 ]
   then
       fill=""
       printf -v rest "%-*s" $((COLS-10))
   else
     printf -v fill "%-*s" $((pct*(COLS-10)/100))
     printf -v rest "%-*s" $((COLS-10-(pct*(COLS-10)/100)))
   fi
   printf "\r%4d%% [%s%s]" $pct "${fill// /=}" "${rest// /.}"
}
 
for((val=0;val<101;val++)) {
    show_pct $val
    sleep 0.05
}
show_pct -1

---------- Post updated at 08:11 AM ---------- Previous update was at 07:51 AM ----------

Replace last line of function with

Code:

 printf "\r       %s%s]\r%4d%% [%s" "$fill"  "${rest// /.}" $pct "${fill// /=}" >&2

To output to stderr and leave cursor at % complete position, however this outputs nearly twice as many characters for each percentage.

It's also worth "remembering" the last percentage displayed and not outputting anything if the percentage is the same.

Last edited by Chubler_XL; 09-19-2012 at 07:17 PM..

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imagecopymerge

IMAGECOPYMERGE(3)							 1							 IMAGECOPYMERGE(3)

imagecopymerge - Copy and merge part of an image

SYNOPSIS

       bool  imagecopymerge  (resource	 $dst_im, resource  $src_im, int  $dst_x, int  $dst_y, int  $src_x, int  $src_y, int  $src_w, int  $src_h,
       int  $pct)

DESCRIPTION

	Copy a part of $src_im onto $dst_im starting at the x,y coordinates $src_x, $src_y  with a width of $src_w and a  height  of  $src_h.  The
       portion defined will be copied onto the x,y coordinates, $dst_x and $dst_y.

PARAMETERS

	      o $dst_im
		-Destination image link resource.

	      o $src_im
		-Source image link resource.

	      o $dst_x
		- x-coordinate of destination point.

	      o $dst_y
		- y-coordinate of destination point.

	      o $src_x
		- x-coordinate of source point.

	      o $src_y
		- y-coordinate of source point.

	      o $src_w
		-Source width.

	      o $src_h
		-Source height.

	      o $pct
		-  The two images will be merged according to $pct which can range from 0 to 100. When $pct = 0, no action is taken, when 100 this
		function behaves identically to imagecopy(3) for pallete images, except for ignoring alpha components, while it  implements  alpha
		transparency for true colour images.

RETURN VALUES

	Returns TRUE on success or FALSE on failure.

EXAMPLES

       Example #1

	      Merging two copies of the PHP.net logo with 75% transparency

	      <?php
	      // Create image instances
	      $dest = imagecreatefromgif('php.gif');
	      $src = imagecreatefromgif('php.gif');

	      // Copy and merge
	      imagecopymerge($dest, $src, 10, 10, 0, 0, 100, 47, 75);

	      // Output and free from memory
	      header('Content-Type: image/gif');
	      imagegif($dest);

	      imagedestroy($dest);
	      imagedestroy($src);
	      ?>

PHP Documentation Group 													 IMAGECOPYMERGE(3)