106 lines
2.8 KiB
Go
106 lines
2.8 KiB
Go
package commands
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import (
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"fmt"
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"os"
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"strings"
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"sync"
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"github.com/git-lfs/git-lfs/config"
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"github.com/git-lfs/git-lfs/httputil"
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"github.com/git-lfs/git-lfs/localstorage"
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"github.com/spf13/cobra"
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)
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var (
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commandFuncs []func() *cobra.Command
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commandMu sync.Mutex
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)
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// NewCommand creates a new 'git-lfs' sub command, given a command name and
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// command run function.
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//
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// Each command will initialize the local storage ('.git/lfs') directory when
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// run, unless the PreRun hook is set to nil.
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func NewCommand(name string, runFn func(*cobra.Command, []string)) *cobra.Command {
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return &cobra.Command{Use: name, Run: runFn, PreRun: resolveLocalStorage}
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}
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// RegisterCommand creates a direct 'git-lfs' subcommand, given a command name,
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// a command run function, and an optional callback during the command
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// initialization process.
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//
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// The 'git-lfs' command initialization is deferred until the `commands.Run()`
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// function is called. The fn callback is passed the output from NewCommand,
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// and gives the caller the flexibility to customize the command by adding
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// flags, tweaking command hooks, etc.
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func RegisterCommand(name string, runFn func(cmd *cobra.Command, args []string), fn func(cmd *cobra.Command)) {
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commandMu.Lock()
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commandFuncs = append(commandFuncs, func() *cobra.Command {
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cmd := NewCommand(name, runFn)
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if fn != nil {
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fn(cmd)
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}
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return cmd
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})
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commandMu.Unlock()
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}
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// Run initializes the 'git-lfs' command and runs it with the given stdin and
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// command line args.
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func Run() {
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root := NewCommand("git-lfs", gitlfsCommand)
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root.PreRun = nil
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// Set up help/usage funcs based on manpage text
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root.SetHelpTemplate("{{.UsageString}}")
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root.SetHelpFunc(helpCommand)
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root.SetUsageFunc(usageCommand)
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for _, f := range commandFuncs {
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if cmd := f(); cmd != nil {
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root.AddCommand(cmd)
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}
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}
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root.Execute()
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httputil.LogHttpStats(cfg)
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}
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func gitlfsCommand(cmd *cobra.Command, args []string) {
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versionCommand(cmd, args)
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cmd.Usage()
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}
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// resolveLocalStorage implements the `func(*cobra.Command, []string)` signature
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// necessary to wire it up via `cobra.Command.PreRun`. When run, this function
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// will resolve the localstorage directories.
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func resolveLocalStorage(cmd *cobra.Command, args []string) {
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localstorage.ResolveDirs()
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}
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func setupLocalStorage(cmd *cobra.Command, args []string) {
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config.ResolveGitBasicDirs()
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}
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func helpCommand(cmd *cobra.Command, args []string) {
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if len(args) == 0 {
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printHelp("git-lfs")
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} else {
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printHelp(args[0])
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}
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}
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func usageCommand(cmd *cobra.Command) error {
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printHelp(cmd.Name())
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return nil
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}
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func printHelp(commandName string) {
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if txt, ok := ManPages[commandName]; ok {
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fmt.Fprintf(os.Stderr, "%s\n", strings.TrimSpace(txt))
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} else {
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fmt.Fprintf(os.Stderr, "Sorry, no usage text found for %q\n", commandName)
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}
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}
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