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bin/brew: split up brew file symlink check.

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This will enable this code to be reused in a future commit and makes it
more obvious what’s being done.
This commit is contained in:
Mike McQuaid 2016-08-24 10:55:46 +01:00
parent db4ce3d6b7
commit 2f9bf5f047
1 changed files with 9 additions and 4 deletions
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13
bin/brew
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@ -5,6 +5,13 @@ quiet_cd() {
cd "$@" >/dev/null
}
symlink_target_directory() {
local target="$(readlink "$1")"
local target_dirname="$(dirname "$target")"
local directory="$2"
quiet_cd "$directory" && quiet_cd "$target_dirname" && pwd -P
}
BREW_FILE_DIRECTORY="$(quiet_cd "${0%/*}/" && pwd -P)"
HOMEBREW_BREW_FILE="${BREW_FILE_DIRECTORY%/}/${0##*/}"
HOMEBREW_PREFIX="${HOMEBREW_BREW_FILE%/*/*}"
@ -17,12 +24,10 @@ fi
HOMEBREW_REPOSITORY="$HOMEBREW_PREFIX"
# Resolve the bin/brew symlink to find Homebrew's repository
if [[ -L "$HOMEBREW_BREW_FILE" ]]
then
BREW_SYMLINK="$(readlink "$HOMEBREW_BREW_FILE")"
BREW_SYMLINK_DIRECTORY="$(dirname "$BREW_SYMLINK")"
BREW_FILE_DIRECTORY="$(quiet_cd "$BREW_FILE_DIRECTORY" &&
quiet_cd "$BREW_SYMLINK_DIRECTORY" && pwd -P)"
BREW_FILE_DIRECTORY="$(symlink_target_directory "$HOMEBREW_BREW_FILE" "$BREW_FILE_DIRECTORY")"
HOMEBREW_REPOSITORY="${BREW_FILE_DIRECTORY%/*}"
fi