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 Forum index » Off-Topic Area » Programming
Tailbox text handling
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8-bit


Joined: 03 Apr 2007
Posts: 3012
Location: Oregon
PostPosted: Tue 27 Oct 2009, 18:58    Post subject:  Tailbox text handling
Subject description: Formatting text befor display in tailbox window		  
I got tailing to work after a fashion.
But I am having a problem with output from an external program that overwrites some lines it displays.
The output to the tailbox window currrently shows all lines individually rather than overwriting some as it should.
What should I change in this sample program?

Code:
#!/bin/sh

export TITLE="Test run"
export TAILFILE=/tmp/mine
ufiformat -v /dev/sde> $TAILFILE&
#mkdosfs -v -I /dev/sde&> $TAILFILE
echo 99 > /tmp/tailbox_progress
echo " " > /tmp/tailbox_text

tailing (){
   I=`cat /tmp/tailbox_progress`
   echo $TITLE
   echo $I
   sleep 1
   [ -s "$TAILFILE" ] && tail -n 20 "$TAILFILE" | tr '\r' '\n' | tail -n 20 > /tmp/tailbox_text
   echo 100 > /tmp/tailbox_progress
}
export -f tailing

export tailbox="
<window title=\"tailbox\">
 <vbox>
  <progressbar>
   <input>"'while [ A != B ]; do tailing; done'"</input>
   <action>refresh:TAIL</action>
   <action>echo 99 > /tmp/tailbox_progress</action>
  </progressbar>
  <edit>
   <variable>TAIL</variable>
   <input file>/tmp/tailbox_text</input>
   <width>300</width><height>200</height>
  </edit>
 </vbox>
</window>"

I=$IFS; IFS=""
for STATEMENTS in $(gtkdialog3 -p tailbox); do
   eval $STATEMENTS
done
IFS=$I
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