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path: root/options.go
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package git

import (
	"errors"

	"srcd.works/go-git.v4/config"
	"srcd.works/go-git.v4/plumbing"
	"srcd.works/go-git.v4/plumbing/protocol/packp/sideband"
	"srcd.works/go-git.v4/plumbing/transport"
)

const (
	// DefaultRemoteName name of the default Remote, just like git command
	DefaultRemoteName = "origin"
)

var (
	ErrMissingURL = errors.New("URL field is required")
)

// CloneOptions describes how a clone should be performed
type CloneOptions struct {
	// The (possibly remote) repository URL to clone from
	URL string
	// Auth credentials, if required, to use with the remote repository
	Auth transport.AuthMethod
	// Name of the remote to be added, by default `origin`
	RemoteName string
	// Remote branch to clone
	ReferenceName plumbing.ReferenceName
	// Fetch only ReferenceName if true
	SingleBranch bool
	// Limit fetching to the specified number of commits
	Depth int
	// Progress is where the human readable information sent by the server is
	// stored, if nil nothing is stored and the capability (if supported)
	// no-progress, is sent to the server to avoid send this information
	Progress sideband.Progress
}

// Validate validates the fields and sets the default values
func (o *CloneOptions) Validate() error {
	if o.URL == "" {
		return ErrMissingURL
	}

	if o.RemoteName == "" {
		o.RemoteName = DefaultRemoteName
	}

	if o.ReferenceName == "" {
		o.ReferenceName = plumbing.HEAD
	}

	return nil
}

// PullOptions describes how a pull should be performed
type PullOptions struct {
	// Name of the remote to be pulled. If empty, uses the default.
	RemoteName string
	// Remote branch to clone.  If empty, uses HEAD.
	ReferenceName plumbing.ReferenceName
	// Fetch only ReferenceName if true.
	SingleBranch bool
	// Limit fetching to the specified number of commits.
	Depth int
	// Auth credentials, if required, to use with the remote repository
	Auth transport.AuthMethod
	// Progress is where the human readable information sent by the server is
	// stored, if nil nothing is stored and the capability (if supported)
	// no-progress, is sent to the server to avoid send this information
	Progress sideband.Progress
}

// Validate validates the fields and sets the default values.
func (o *PullOptions) Validate() error {
	if o.RemoteName == "" {
		o.RemoteName = DefaultRemoteName
	}

	if o.ReferenceName == "" {
		o.ReferenceName = plumbing.HEAD
	}

	return nil
}

// FetchOptions describes how a fetch should be performed
type FetchOptions struct {
	// Name of the remote to fetch from. Defaults to origin.
	RemoteName string
	RefSpecs   []config.RefSpec
	// Depth limit fetching to the specified number of commits from the tip of
	// each remote branch history.
	Depth int
	// Auth credentials, if required, to use with the remote repository
	Auth transport.AuthMethod
	// Progress is where the human readable information sent by the server is
	// stored, if nil nothing is stored and the capability (if supported)
	// no-progress, is sent to the server to avoid send this information
	Progress sideband.Progress
}

// Validate validates the fields and sets the default values
func (o *FetchOptions) Validate() error {
	if o.RemoteName == "" {
		o.RemoteName = DefaultRemoteName
	}

	for _, r := range o.RefSpecs {
		if err := r.Validate(); err != nil {
			return err
		}
	}

	return nil
}

// PushOptions describes how a push should be performed
type PushOptions struct {
	// RemoteName is the name of the remote to be pushed to.
	RemoteName string
	// RefSpecs specify what destination ref to update with what source
	// object. A refspec with empty src can be used to delete a reference.
	RefSpecs []config.RefSpec
	// Auth credentials, if required, to use with the remote repository
	Auth transport.AuthMethod
}

// Validate validates the fields and sets the default values
func (o *PushOptions) Validate() error {
	if o.RemoteName == "" {
		o.RemoteName = DefaultRemoteName
	}

	if len(o.RefSpecs) == 0 {
		o.RefSpecs = []config.RefSpec{
			config.RefSpec(config.DefaultPushRefSpec),
		}
	}

	for _, r := range o.RefSpecs {
		if err := r.Validate(); err != nil {
			return err
		}
	}

	return nil
}