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#!/bin/bash
function die {
echo "$@"
exit 1
}
FILE="$1"
if [[ -z "$FILE" ]]; then
die "Usage: $0 <path to libusb.h>"
fi
if [[ $(gcc --version | grep -i "llvm") == "" ]]; then
die "Error: This change is unnecessary unless your gcc uses llvm"
fi
BACKUP="${FILE}.orig"
if [[ -f "$BACKUP" ]]; then
die "It looks like you've already run this script ($BACKUP exists)"
fi
cp $FILE $BACKUP || die "Could not create backup"
{
echo 'H' # Turn on error printing
echo 'g/\[0\].*non-standard/s/\[0\]/[1]/' # Use [1] instead of [0] so the size is unambiguous
echo 'g/\[.\].*non-standard/p' # Print the lines changed
echo 'w' # Write output
} | ed $FILE
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