diff options
Diffstat (limited to 'misc/boring/go-wrapper')
-rwxr-xr-x | misc/boring/go-wrapper | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/misc/boring/go-wrapper b/misc/boring/go-wrapper new file mode 100755 index 0000000000..eacd6cc8f6 --- /dev/null +++ b/misc/boring/go-wrapper @@ -0,0 +1,100 @@ +#!/bin/sh +# Copied from https://raw.githubusercontent.com/docker-library/golang/master/1.9-rc/stretch/go-wrapper +# Copied into Docker images. + +set -e + +usage() { + base="$(basename "$0")" + cat <<EOUSAGE + +usage: $base command [args] + +This script assumes that is is run from the root of your Go package (for +example, "/go/src/app" if your GOPATH is set to "/go"). + +In Go 1.4, a feature was introduced to supply the canonical "import path" for a +given package in a comment attached to a package statement +(https://golang.org/s/go14customimport). + +This script allows us to take a generic directory of Go source files such as +"/go/src/app" and determine that the canonical "import path" of where that code +expects to live and reference itself is "github.com/jsmith/my-cool-app". It +will then ensure that "/go/src/github.com/jsmith/my-cool-app" is a symlink to +"/go/src/app", which allows us to build and run it under the proper package +name. + +For compatibility with versions of Go older than 1.4, the "import path" may also +be placed in a file named ".godir". + +Available Commands: + + $base download + $base download -u + (equivalent to "go get -d [args] [godir]") + + $base install + $base install -race + (equivalent to "go install [args] [godir]") + + $base run + $base run -app -specific -arguments + (assumes "GOPATH/bin" is in "PATH") + +EOUSAGE +} + +# make sure there is a subcommand specified +if [ "$#" -eq 0 ]; then + usage >&2 + exit 1 +fi +# "shift" so that "$@" becomes the remaining arguments and can be passed along to other "go" subcommands easily +cmd="$1" +shift + +goDir="$(go list -e -f '{{.ImportComment}}' 2>/dev/null || true)" + +if [ -z "$goDir" -a -s .godir ]; then + goDir="$(cat .godir)" +fi + +dir="$(pwd -P)" +if [ "$goDir" ]; then + goPath="${GOPATH%%:*}" # this just grabs the first path listed in GOPATH, if there are multiple (which is the detection logic "go get" itself uses, too) + goDirPath="$goPath/src/$goDir" + mkdir -p "$(dirname "$goDirPath")" + if [ ! -e "$goDirPath" ]; then + ln -sfv "$dir" "$goDirPath" + elif [ ! -L "$goDirPath" ]; then + echo >&2 "error: $goDirPath already exists but is unexpectedly not a symlink!" + exit 1 + fi + goBin="$goPath/bin/$(basename "$goDir")" +else + goBin="$(basename "$dir")" # likely "app" +fi + +case "$cmd" in + download) + set -- go get -v -d "$@" + if [ "$goDir" ]; then set -- "$@" "$goDir"; fi + set -x; exec "$@" + ;; + + install) + set -- go install -v "$@" + if [ "$goDir" ]; then set -- "$@" "$goDir"; fi + set -x; exec "$@" + ;; + + run) + set -x; exec "$goBin" "$@" + ;; + + *) + echo >&2 'error: unknown command:' "$cmd" + usage >&2 + exit 1 + ;; +esac |