ca47b47f77
This case is _really_ slow even although it's something we encourage people to run often and build systems often do. The `brew --prefix` case is really fast because it's just in Bash so: let's pull the `brew --prefix <formula>` case into Bash too. This doesn't handle any edge-cases like `--installed` and the formula detection is pretty simple. Also, to make this behaviour consistent, never output `Cellar` paths from the (Ruby) `brew --prefix`; we never want people relying on the Cellar paths anyway, only output them if the formula wasn't installed (where, arguably, using a Cellar path is even worse) and the speedup is worth this deviation in behaviour.
30 lines
1.1 KiB
Bash
30 lines
1.1 KiB
Bash
# does the quickest output of brew --prefix possible for the basic cases:
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# - `brew --prefix` (output HOMEBREW_PREFIX)
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# - `brew --prefix <formula>` (output HOMEBREW_PREFIX/opt/<formula>)
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# anything else? delegate to the slower cmd/--prefix.rb
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homebrew-prefix() {
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while [[ "$#" -gt 0 ]]; do
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case $1 in
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# check we actually have --prefix and not e.g. --prefixsomething
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--prefix) local prefix="1"; shift ;;
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# reject all other flags
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-*) return 1 ;;
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*) [ -n "$formula" ] && return 1; local formula="$1"; shift ;;
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esac
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done
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[ -z "$prefix" ] && return 1
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[ -z "$formula" ] && echo "$HOMEBREW_PREFIX" && return 0
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local formula_path
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if [ -f "$HOMEBREW_REPOSITORY/Library/Taps/homebrew/homebrew-core/${formula}.rb" ]; then
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formula_path="$HOMEBREW_REPOSITORY/Library/Taps/homebrew/homebrew-core/${formula}.rb"
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else
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formula_path="$(find "$HOMEBREW_REPOSITORY/Library/Taps" -name "${formula}.rb" -print -quit)"
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fi
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[ -z "$formula_path" ] && return 1
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echo "$HOMEBREW_PREFIX/opt/$formula"
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return 0
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}
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