98 lines
2.4 KiB
Bash
98 lines
2.4 KiB
Bash
#!/bin/sh
|
|
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
|