Shell Programming and Scripting

Hi Friends,

I have large volume of data file as shown below.
Beganing or end of each filed, there are some blank spaces.
How do I remove those spaces?

AAA AAA1 | BBB BB1 BB2 |CC CCCC
DDDD DD | EEEEEEE EEEEEEEE | FFF FFFFFF FFFF
GG GGGGGG |HH HH |IIII IIIIIIIIIIII

The file should like as below.
AAA AAA1|BBB BB1 BB2|CC CCCC
DDDD DD|EEEEEEE EEEEEEEE|FFF FFFFFF FFFF
GG GGGGGG|HH HH|IIII IIIIIIIIIIII[/B]


Thanks for your help in advance.
Prashant

-----Post Update-----

I need to retain space between words.

-----Post Update-----

I need to retain space between words.

Code:

nawk -F'|' '
  function trim(str) {
      sub("^[ ]*)", "", str); sub("[ ]*$", "", str)
      return str
  }
  {
     for(i=1; i<=NF; i++)
        $i=trim($i)
     print
  }' OFS='|' myFile

Code:

awk 'BEGIN{OFS=FS="|"}
{
  for(i=1;i<=NF;i++){
   gsub(/^ +| +$/,"",$i)
  }
}1'  file

Code:

sed -e 's/[ ]*\|[ ]*/\|/g' -e 's/[ ]*$//' a.txt