mirror of
https://github.com/Homebrew/brew.git
synced 2025-07-14 16:09:03 +08:00
a02be9eea2
Move some stuff formerly in `Library/ENV` around: - Move `Library/ENV/$XCODE_VERSION` to `Library/Homebrew/env/super` as they are all superenv wrappers and all symlinks to the same version. We never needed the "separate shims for separate versions" functionality and it just adds confusion. - Move `Library/ENV/pkgconfig` to `Library/Homebrew/env/pkgconfig` to get more things under `Library/Homebrew` - Move `Library/ENV/scm` to `Library/scm` as these wrappers are not actually used by or related to superenv (or stdenv) in any way.
121 lines
2.5 KiB
Bash
Executable File
121 lines
2.5 KiB
Bash
Executable File
#!/bin/bash
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# This script because we support $GIT, $HOMEBREW_SVN, etc., Xcode-only and
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# no Xcode/CLT configurations. Order is careful to be what the user would want.
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set +o posix
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quiet_safe_cd() {
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cd "$1" >/dev/null || { echo "Error: failed to cd to $1" >&2; exit 1; }
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}
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realpath() {
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local path="$1"
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local dir
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local base
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local dest
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dir="$(quiet_safe_cd "${path%/*}/" && pwd -P)"
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base="${path##*/}"
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path="$dir/$base"
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while [[ -L "$path" ]]
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do
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dest="$(readlink "$path")"
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if [[ "$dest" = "/"* ]]
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then
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path="$dest"
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else
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path="$dir/$dest"
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fi
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dir="$(quiet_safe_cd "${path%/*}/" && pwd -P)"
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base="${path##*/}"
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path="$dir/$base"
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done
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echo "$path"
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}
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executable() {
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local file="$1"
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[[ -f "$file" && -x "$file" ]]
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}
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lowercase() {
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echo "$1" | tr '[:upper:]' '[:lower:]'
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}
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safe_exec() {
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local arg0="$1"
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if ! executable "$arg0"
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then
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return
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fi
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# prevent fork-bombs
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if [[ "$(lowercase "$arg0")" = "$SCM_FILE" || "$(realpath "$arg0")" = "$SCM_REAL" ]]
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then
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return
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fi
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if [[ "$HOMEBREW" = "print-path" ]]
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then
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echo "$arg0"
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exit
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fi
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exec "$@"
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}
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SCM_FILE="${0##*/}"
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SCM_REAL="$(realpath "$0")"
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SCM_DIR="$(quiet_safe_cd "${SCM_REAL%/*}/" && pwd -P)"
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if [[ "$1" = --homebrew=* ]]
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then
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HOMEBREW="${1:11}"
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shift
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fi
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case "$(lowercase "$SCM_FILE")" in
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git)
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[[ -n "$HOMEBREW_GIT" ]] && safe_exec "$(which "$HOMEBREW_GIT")" "$@"
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[[ -n "$GIT" ]] && safe_exec "$(which "$GIT")" "$@"
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;;
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svn)
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[[ -n "$HOMEBREW_SVN" ]] && safe_exec "$(which "$HOMEBREW_SVN")" "$@"
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;;
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esac
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brew_version="$(quiet_safe_cd "$SCM_DIR/../../../../bin" && pwd -P)/$SCM_FILE"
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safe_exec "$brew_version" "$@"
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IFS=$'\n'
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for path in $(/usr/bin/which -a "$SCM_FILE" 2>/dev/null)
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do
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if [[ "$path" != "/usr/bin/$SCM_FILE" ]]
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then
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safe_exec "$path" "$@"
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fi
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done
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if executable "/usr/bin/xcode-select"
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then
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# xcode-select will return empty on no Xcode/CLT configuration.
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# /usr/bin/<tool> will be a popup stub under such configuration.
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# xcrun hangs if xcode-select is set to "/"
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xcode_path="$(/usr/bin/xcode-select -print-path 2>/dev/null)"
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[[ -n "$xcode_path" ]] || popup_stub=1
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if [[ -z "$popup_stub" && "$xcode_path" != "/" ]]
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then
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path="$(/usr/bin/xcrun -find "$SCM_FILE" 2>/dev/null)"
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safe_exec "$path" "$@"
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fi
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fi
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path="/Applications/Xcode.app/Contents/Developer/usr/bin/$SCM_FILE"
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safe_exec "$path" "$@"
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path="/usr/bin/$SCM_FILE"
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[[ -z "$popup_stub" ]] && safe_exec "$path" "$@"
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echo "You must: brew install $SCM_FILE" >&2
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exit 1
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