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#!/usr/bin/env bash
# Usage: rbenv version-file-read <file>
set -e
[ -n "$RBENV_DEBUG" ] && set -x
VERSION_FILE="$1"
if [ -s "$VERSION_FILE" ]; then
# Read the first word from the specified version file. Avoid reading it whole.
IFS="${IFS}"$'\r'
read -n 1024 -d "" -r version _ <"$VERSION_FILE" || :
if [ "$version" = ".." ] || [[ $version == */* ]]; then
echo "rbenv: invalid version in \`$VERSION_FILE'" >&2
elif [ -n "$version" ]; then
echo "$version"
exit
fi
fi
exit 1
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