d0ff64666a
If `/usr/local` is the prefix but not the repository (so bottles can be used) then running `/usr/local/bin/brew` works great but `$HOMEBREW_REPOSITORY/bin/brew` assumes the prefix is `$HOMEBREW_REPOSITORY`. This is a pain when doing work on the Homebrew repository and having e.g. `bin` in your `$PATH`. Improve this behaviour so `bin/brew` knows how to handle this situation.
48 lines
1.3 KiB
Bash
Executable File
48 lines
1.3 KiB
Bash
Executable File
#!/bin/bash
|
|
set +o posix
|
|
|
|
quiet_cd() {
|
|
cd "$@" >/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%/*/*}"
|
|
|
|
# Default to / prefix if unset or the bin/brew file.
|
|
if [[ -z "$HOMEBREW_PREFIX" || "$HOMEBREW_PREFIX" = "$HOMEBREW_BREW_FILE" ]]
|
|
then
|
|
HOMEBREW_PREFIX="/"
|
|
fi
|
|
|
|
HOMEBREW_REPOSITORY="$HOMEBREW_PREFIX"
|
|
|
|
# Resolve the bin/brew symlink to find Homebrew's repository
|
|
if [[ -L "$HOMEBREW_BREW_FILE" ]]
|
|
then
|
|
BREW_FILE_DIRECTORY="$(symlink_target_directory "$HOMEBREW_BREW_FILE" "$BREW_FILE_DIRECTORY")"
|
|
HOMEBREW_REPOSITORY="${BREW_FILE_DIRECTORY%/*}"
|
|
fi
|
|
|
|
# Try to find a /usr/local HOMEBREW_PREFIX where possible (for bottles)
|
|
if [[ -L "/usr/local/bin/brew" ]]
|
|
then
|
|
USR_LOCAL_BREW_FILE_DIRECTORY="$(symlink_target_directory "/usr/local/bin/brew" "/usr/local/bin")"
|
|
USR_LOCAL_HOMEBREW_REPOSITORY="${USR_LOCAL_BREW_FILE_DIRECTORY%/*}"
|
|
if [[ "$HOMEBREW_REPOSITORY" = "$USR_LOCAL_HOMEBREW_REPOSITORY" ]]
|
|
then
|
|
HOMEBREW_PREFIX="/usr/local"
|
|
fi
|
|
fi
|
|
|
|
HOMEBREW_LIBRARY="$HOMEBREW_REPOSITORY/Library"
|
|
|
|
source "$HOMEBREW_LIBRARY/Homebrew/brew.sh"
|