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32 lines
487 B
Bash
Executable file
32 lines
487 B
Bash
Executable file
#! /usr/bin/env bash
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#
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# A diff canonifier that removes all fields starting with a given
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# prefix.
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if [ $# != 1 ]; then
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echo "usage: `basename $0` <field prefix>"
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exit 1
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fi
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awk -v "PREFIX=$1" '
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BEGIN { FS="\t"; OFS="\t"; }
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/^#fields/ {
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for ( i = 2; i <= NF; ++i )
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{
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if ( index($i, PREFIX) == 1 )
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rem[i-1] = 1;
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}
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}
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/^[^#]/ {
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for ( i in rem )
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# Mark that it is set, but ignore content.
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$i = "+";
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}
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{
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print;
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}
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'
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