37 lines
729 B
Bash
Executable File
37 lines
729 B
Bash
Executable File
#!/bin/sh
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help()
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{
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echo "Usage imgAlignment <file> <align> <additional padding size>"
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echo "The additional padding size is optional. It is used if the file will be appended other data."
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}
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if [ $# -lt 2 ]; then
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help
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exit -1
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fi
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if [ ! -e $1 ]; then
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echo "\"$1\" not found!\n"
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exit -2
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fi
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OrigFileSize=`stat -c %s $1`
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if [ $3 -gt 0 ]; then
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let OrigFileSize+=$3;
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fi
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if [ $(($OrigFileSize & ($2 - 1))) == 0 ]; then
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ExpectSize=$OrigFileSize
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else
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ExpectSize=$((($OrigFileSize | ($2 - 1)) + 1))
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fi
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PaddingSize=$(($ExpectSize - $OrigFileSize))
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echo "OrigFileSize=$OrigFileSize ExpectSize=$ExpectSize PadSize=$PaddingSize"
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if [ $PaddingSize -gt 0 ]; then
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dd if=/dev/zero bs=$PaddingSize count=1 | tr '\000' '\377' >>$1
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fi
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