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vcs_cmds.go
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vcs_cmds.go
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package client
import (
"strings"
"time"
"github.com/sahib/brig/server/capnp"
h "github.com/sahib/brig/util/hashlib"
)
// MakeCommit creates a new commit from the current staging area.
// The commit will have the message `msg`.
func (ctl *Client) MakeCommit(msg string) error {
call := ctl.api.Commit(ctl.ctx, func(p capnp.VCS_commit_Params) error {
return p.SetMsg(msg)
})
_, err := call.Struct()
return err
}
// Commit describes a single commit in more detail.
type Commit struct {
Hash h.Hash
Msg string
Tags []string
Date time.Time
}
func convertCapCommit(capEntry *capnp.Commit) (*Commit, error) {
result := Commit{}
modTimeStr, err := capEntry.Date()
if err != nil {
return nil, err
}
if err := result.Date.UnmarshalText([]byte(modTimeStr)); err != nil {
return nil, err
}
result.Hash, err = capEntry.Hash()
if err != nil {
return nil, err
}
result.Msg, err = capEntry.Msg()
if err != nil {
return nil, err
}
tagList, err := capEntry.Tags()
if err != nil {
return nil, err
}
tags := []string{}
for idx := 0; idx < tagList.Len(); idx++ {
tag, err := tagList.At(idx)
if err != nil {
return nil, err
}
tags = append(tags, tag)
}
result.Tags = tags
return &result, nil
}
// Log lists all commits, starting with the newest one.
func (ctl *Client) Log() ([]Commit, error) {
call := ctl.api.Log(ctl.ctx, func(p capnp.VCS_log_Params) error {
return nil
})
results := []Commit{}
result, err := call.Struct()
if err != nil {
return nil, err
}
entries, err := result.Entries()
if err != nil {
return nil, err
}
for idx := 0; idx < entries.Len(); idx++ {
capEntry := entries.At(idx)
result, err := convertCapCommit(&capEntry)
if err != nil {
return nil, err
}
results = append(results, *result)
}
return results, nil
}
// Tag tags a commit (`rev`) with a certain `name`.
func (ctl *Client) Tag(rev, name string) error {
call := ctl.api.Tag(ctl.ctx, func(p capnp.VCS_tag_Params) error {
if err := p.SetTagName(name); err != nil {
return err
}
return p.SetRev(rev)
})
_, err := call.Struct()
return err
}
// Untag removes the `name` tag.
func (ctl *Client) Untag(name string) error {
call := ctl.api.Untag(ctl.ctx, func(p capnp.VCS_untag_Params) error {
return p.SetTagName(name)
})
_, err := call.Struct()
return err
}
// Reset restores the content of `path` to the state at `rev`.
// If `force` is true, it will overwrite the staging area if it needs to.
func (ctl *Client) Reset(path, rev string, force bool) error {
call := ctl.api.Reset(ctl.ctx, func(p capnp.VCS_reset_Params) error {
if err := p.SetPath(path); err != nil {
return err
}
p.SetForce(force)
return p.SetRev(rev)
})
_, err := call.Struct()
return err
}
// Change describes a change of a node between two commits.
type Change struct {
Path string
Mask []string
Head *Commit
Next *Commit
MovedTo string
WasPreviouslyAt string
IsPinned bool
IsExplicit bool
}
// History returns a detailed set of changes that happened to the node at `path`.
func (ctl *Client) History(path string) ([]*Change, error) {
call := ctl.api.History(ctl.ctx, func(p capnp.VCS_history_Params) error {
return p.SetPath(path)
})
result, err := call.Struct()
if err != nil {
return nil, err
}
histList, err := result.History()
if err != nil {
return nil, err
}
results := []*Change{}
for idx := 0; idx < histList.Len(); idx++ {
entry := histList.At(idx)
path, err := entry.Path()
if err != nil {
return nil, err
}
change, err := entry.Change()
if err != nil {
return nil, err
}
capHeadCmt, err := entry.Head()
if err != nil {
return nil, err
}
head, err := convertCapCommit(&capHeadCmt)
if err != nil {
return nil, err
}
movedTo, err := entry.MovedTo()
if err != nil {
return nil, err
}
wasPreviouslyAt, err := entry.WasPreviouslyAt()
if err != nil {
return nil, err
}
var next *Commit
if entry.HasNext() {
capNextCmt, err := entry.Next()
if err != nil {
return nil, err
}
next, err = convertCapCommit(&capNextCmt)
if err != nil {
return nil, err
}
}
results = append(results, &Change{
Path: path,
Mask: strings.Split(change, "|"),
Head: head,
Next: next,
MovedTo: movedTo,
WasPreviouslyAt: wasPreviouslyAt,
IsPinned: entry.IsPinned(),
IsExplicit: entry.IsExplicit(),
})
}
return results, nil
}
// DiffPair is a pair of nodes that were changed in some way.
type DiffPair struct {
Src StatInfo
Dst StatInfo
}
// Diff gives a detailed overview over the changes between two commits.
type Diff struct {
Added []StatInfo
Removed []StatInfo
Ignored []StatInfo
Missing []StatInfo
Moved []DiffPair
Merged []DiffPair
Conflict []DiffPair
}
// IsEmpty reports if a diff is completely empty (i.e. nothing changed)
func (df *Diff) IsEmpty() bool {
return 0 == 0+
len(df.Added)+
len(df.Removed)+
len(df.Ignored)+
len(df.Missing)+
len(df.Moved)+
len(df.Merged)+
len(df.Conflict)
}
func convertDiffList(lst capnp.StatInfo_List) ([]StatInfo, error) {
infos := []StatInfo{}
for idx := 0; idx < lst.Len(); idx++ {
capInfo := lst.At(idx)
info, err := convertCapStatInfo(&capInfo)
if err != nil {
return nil, err
}
infos = append(infos, *info)
}
return infos, nil
}
func convertDiffPairList(lst capnp.DiffPair_List) ([]DiffPair, error) {
pairs := []DiffPair{}
for idx := 0; idx < lst.Len(); idx++ {
capPair := lst.At(idx)
capSrc, err := capPair.Src()
if err != nil {
return nil, err
}
capDst, err := capPair.Dst()
if err != nil {
return nil, err
}
srcInfo, err := convertCapStatInfo(&capSrc)
if err != nil {
return nil, err
}
dstInfo, err := convertCapStatInfo(&capDst)
if err != nil {
return nil, err
}
pairs = append(pairs, DiffPair{
Src: *srcInfo,
Dst: *dstInfo,
})
}
return pairs, nil
}
func convertCapDiffToDiff(capDiff capnp.Diff) (*Diff, error) {
diff := &Diff{}
lst, err := capDiff.Added()
if err != nil {
return nil, err
}
diff.Added, err = convertDiffList(lst)
if err != nil {
return nil, err
}
lst, err = capDiff.Missing()
if err != nil {
return nil, err
}
diff.Missing, err = convertDiffList(lst)
if err != nil {
return nil, err
}
lst, err = capDiff.Removed()
if err != nil {
return nil, err
}
diff.Removed, err = convertDiffList(lst)
if err != nil {
return nil, err
}
lst, err = capDiff.Ignored()
if err != nil {
return nil, err
}
diff.Ignored, err = convertDiffList(lst)
if err != nil {
return nil, err
}
pairs, err := capDiff.Moved()
if err != nil {
return nil, err
}
diff.Moved, err = convertDiffPairList(pairs)
if err != nil {
return nil, err
}
pairs, err = capDiff.Merged()
if err != nil {
return nil, err
}
diff.Merged, err = convertDiffPairList(pairs)
if err != nil {
return nil, err
}
pairs, err = capDiff.Conflict()
if err != nil {
return nil, err
}
diff.Conflict, err = convertDiffPairList(pairs)
if err != nil {
return nil, err
}
return diff, nil
}
// MakeDiff creates a diff between the commits at `remoteRev` and `localRev`.
// If `needFetch` is true, the data is first updated from the remote.
func (ctl *Client) MakeDiff(local, remote, localRev, remoteRev string, needFetch bool) (*Diff, error) {
call := ctl.api.MakeDiff(ctl.ctx, func(p capnp.VCS_makeDiff_Params) error {
if err := p.SetLocalOwner(local); err != nil {
return err
}
if err := p.SetRemoteOwner(remote); err != nil {
return err
}
if err := p.SetLocalRev(localRev); err != nil {
return err
}
p.SetNeedFetch(needFetch)
return p.SetRemoteRev(remoteRev)
})
result, err := call.Struct()
if err != nil {
return nil, err
}
capDiff, err := result.Diff()
if err != nil {
return nil, err
}
return convertCapDiffToDiff(capDiff)
}
// Fetch updates our internal copy of the data of `remote`.
func (ctl *Client) Fetch(remote string) error {
call := ctl.api.Fetch(ctl.ctx, func(p capnp.VCS_fetch_Params) error {
return p.SetWho(remote)
})
_, err := call.Struct()
return err
}
// Sync triggers a sync with the data from `remote`.
// If `needFetch` is true, the data is first updated from the remote.
func (ctl *Client) Sync(remote string, needFetch bool) (*Diff, error) {
call := ctl.api.Sync(ctl.ctx, func(p capnp.VCS_sync_Params) error {
p.SetNeedFetch(needFetch)
return p.SetWithWhom(remote)
})
result, err := call.Struct()
if err != nil {
return nil, err
}
capDiff, err := result.Diff()
if err != nil {
return nil, err
}
return convertCapDiffToDiff(capDiff)
}
// CommitInfo is like a stat(2) for commits.
func (ctl *Client) CommitInfo(rev string) (bool, *Commit, error) {
call := ctl.api.CommitInfo(ctl.ctx, func(p capnp.VCS_commitInfo_Params) error {
return p.SetRev(rev)
})
result, err := call.Struct()
if err != nil {
return false, nil, err
}
if !result.IsValidRef() {
return false, nil, nil
}
capCmt, err := result.Commit()
if err != nil {
return false, nil, err
}
cmt, err := convertCapCommit(&capCmt)
if err != nil {
return false, nil, err
}
return true, cmt, nil
}