pyenv/libexec/rbenv-version-file-read
2012-12-29 22:05:04 -06:00

25 lines
555 B
Bash
Executable file

#!/usr/bin/env bash
# Usage: rbenv version-file-read <file>
set -e
[ -n "$RBENV_DEBUG" ] && set -x
VERSION_FILE="$1"
if [ -e "$VERSION_FILE" ]; then
# Read the first non-whitespace word from the specified version file.
# Be careful not to load it whole in case there's something crazy in it.
version=""
while read -a words; do
word="${words[0]}"
if [ -z "$version" ] && [ -n "$word" ]; then
version="$word"
fi
done < <( cat "$VERSION_FILE" && echo )
if [ -n "$version" ]; then
echo "$version"
exit
fi
fi
exit 1