91 lines
2.8 KiB
Bash
Executable File
91 lines
2.8 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -eu
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## Functions/
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usage() {
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cat << EOF
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SYNOPSIS
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gpm leverages the power of the go get command and the underlying version
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control systems used by it to set your Go dependencies to desired versions,
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thus allowing easily reproducible builds in your Go projects.
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A Godeps file in the root of your Go application is expected containing
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the import paths of your packages and a specific tag or commit hash
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from its version control system, an example Godeps file looks like this:
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$ cat Godeps
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# This is a comment
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github.com/nu7hatch/gotrail v0.0.2
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github.com/replicon/fast-archiver v1.02 #This is another comment!
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github.com/nu7hatch/gotrail 2eb79d1f03ab24bacbc32b15b75769880629a865
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gpm has a companion tool, called [gvp](https://github.com/pote/gvp) which
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provides vendoring functionalities, it alters your GOPATH so every project
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has its own isolated dependency directory, it's usage is recommended.
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USAGE
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$ gpm # Same as 'install'.
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$ gpm install # Parses the Godeps file, installs dependencies and sets
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# them to the appropriate version.
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$ gpm version # Outputs version information
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$ gpm help # Prints this message
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EOF
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}
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# Iterates over Godep file dependencies and sets
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# the specified version on each of them.
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set_dependencies() {
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deps=$(sed 's/#.*//;/^\s*$/d' < $1) || echo ""
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while read package version; do
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(
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install_path="${GOPATH%%:*}/src/${package%%/...}"
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[[ -e "$install_path/.git/index.lock" ||
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-e "$install_path/.hg/store/lock" ||
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-e "$install_path/.bzr/checkout/lock" ]] && wait
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echo ">> Getting package "$package""
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go get -u -d "$package"
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echo ">> Setting $package to version $version"
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cd $install_path
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[ -d .hg ] && hg update -q "$version"
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[ -d .git ] && git checkout -q "$version"
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[ -d .bzr ] && bzr revert -q -r "$version"
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[ -d .svn ] && svn update -r "$version"
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) &
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done < <(echo "$deps")
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wait
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echo ">> All Done"
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}
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## /Functions
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case "${1:-"install"}" in
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"version")
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echo ">> gpm v1.2.0"
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;;
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"install")
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deps_file="Godeps"
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[[ "$#" -eq 2 ]] && [[ -n "$2" ]] && deps_file="$2"
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[[ -f "$deps_file" ]] || (echo ">> $deps_file file does not exist." && exit 1)
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(which go > /dev/null) ||
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( echo ">> Go is currently not installed or in your PATH" && exit 1)
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set_dependencies $deps_file
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;;
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"help")
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usage
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;;
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*)
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## Support for Plugins: if command is unknown search for a gpm-command executable.
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if command -v "gpm-$1" > /dev/null
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then
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plugin=$1 &&
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shift &&
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gpm-$plugin $@ &&
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exit
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else
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usage && exit 1
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fi
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;;
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esac
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