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|
package msg
import (
"errors"
"fmt"
"io"
"os/exec"
"regexp"
"sort"
"strings"
"time"
"git.sr.ht/~rjarry/aerc/app"
"git.sr.ht/~rjarry/aerc/commands"
"git.sr.ht/~rjarry/aerc/lib/log"
mboxer "git.sr.ht/~rjarry/aerc/worker/mbox"
"git.sr.ht/~rjarry/aerc/worker/types"
)
type Pipe struct {
Background bool `opt:"-b"`
Silent bool `opt:"-s"`
Full bool `opt:"-m"`
Part bool `opt:"-p"`
Command string `opt:"..."`
}
func init() {
commands.Register(Pipe{})
}
func (Pipe) Context() commands.CommandContext {
return commands.MESSAGE_LIST | commands.MESSAGE_VIEWER
}
func (Pipe) Aliases() []string {
return []string{"pipe"}
}
func (p Pipe) Execute(args []string) error {
return p.Run(nil)
}
func (p Pipe) Run(cb func()) error {
if p.Full && p.Part {
return errors.New("-m and -p are mutually exclusive")
}
name, _, _ := strings.Cut(p.Command, " ")
provider := app.SelectedTabContent().(app.ProvidesMessage)
if !p.Full && !p.Part {
if _, ok := provider.(*app.MessageViewer); ok {
p.Part = true
} else if _, ok := provider.(*app.AccountView); ok {
p.Full = true
} else {
return errors.New(
"Neither -m nor -p specified and cannot infer default")
}
}
doTerm := func(reader io.Reader, name string) {
cmd := []string{"sh", "-c", p.Command}
term, err := commands.QuickTerm(cmd, reader, p.Silent)
if err != nil {
app.PushError(err.Error())
return
}
if cb != nil {
last := term.OnClose
term.OnClose = func(err error) {
if last != nil {
last(err)
}
cb()
}
}
app.NewTab(term, name)
}
doExec := func(reader io.Reader) {
ecmd := exec.Command("sh", "-c", p.Command)
pipe, err := ecmd.StdinPipe()
if err != nil {
return
}
go func() {
defer log.PanicHandler()
defer pipe.Close()
_, err := io.Copy(pipe, reader)
if err != nil {
log.Errorf("failed to send data to pipe: %v", err)
}
}()
err = ecmd.Run()
if err != nil {
app.PushError(err.Error())
} else {
if ecmd.ProcessState.ExitCode() != 0 {
app.PushError(fmt.Sprintf(
"%s: completed with status %d", name,
ecmd.ProcessState.ExitCode()))
} else {
app.PushStatus(fmt.Sprintf(
"%s: completed with status %d", name,
ecmd.ProcessState.ExitCode()), 10*time.Second)
}
}
if cb != nil {
cb()
}
}
app.PushStatus("Fetching messages ...", 10*time.Second)
if p.Full {
var uids []uint32
var title string
h := newHelper()
store, err := h.store()
if err != nil {
if mv, ok := provider.(*app.MessageViewer); ok {
mv.MessageView().FetchFull(func(reader io.Reader) {
if p.Background {
doExec(reader)
} else {
doTerm(reader,
fmt.Sprintf("%s <%s",
name, title))
}
})
return nil
}
return err
}
uids, err = h.markedOrSelectedUids()
if err != nil {
return err
}
if len(uids) == 1 {
info := store.Messages[uids[0]]
if info != nil {
envelope := info.Envelope
if envelope != nil {
title = envelope.Subject
}
}
}
if title == "" {
title = fmt.Sprintf("%d messages", len(uids))
}
var messages []*types.FullMessage
done := make(chan bool, 1)
store.FetchFull(uids, func(fm *types.FullMessage) {
messages = append(messages, fm)
if len(messages) == len(uids) {
done <- true
}
})
go func() {
defer log.PanicHandler()
select {
case <-done:
break
case <-time.After(30 * time.Second):
// TODO: find a better way to determine if store.FetchFull()
// has finished with some errors.
app.PushError("Failed to fetch all messages")
if len(messages) == 0 {
return
}
}
is_git_patches := false
for _, msg := range messages {
info := store.Messages[msg.Content.Uid]
if info != nil && patchSeriesRe.MatchString(info.Envelope.Subject) {
is_git_patches = true
break
}
}
if is_git_patches {
// Sort all messages by increasing Message-Id header.
// This will ensure that patch series are applied in order.
sort.Slice(messages, func(i, j int) bool {
infoi := store.Messages[messages[i].Content.Uid]
infoj := store.Messages[messages[j].Content.Uid]
if infoi == nil || infoj == nil {
return false
}
return infoi.Envelope.Subject < infoj.Envelope.Subject
})
}
reader := newMessagesReader(messages, len(messages) > 1)
if p.Background {
doExec(reader)
} else {
doTerm(reader, fmt.Sprintf("%s <%s", name, title))
}
}()
} else if p.Part {
mv, ok := provider.(*app.MessageViewer)
if !ok {
return fmt.Errorf("can only pipe message part from a message view")
}
part := provider.SelectedMessagePart()
if part == nil {
return fmt.Errorf("could not fetch message part")
}
mv.MessageView().FetchBodyPart(part.Index, func(reader io.Reader) {
if p.Background {
doExec(reader)
} else {
name := fmt.Sprintf("%s <%s/[%d]",
name, part.Msg.Envelope.Subject, part.Index)
doTerm(reader, name)
}
})
}
if store := provider.Store(); store != nil {
store.Marker().ClearVisualMark()
}
return nil
}
func newMessagesReader(messages []*types.FullMessage, useMbox bool) io.Reader {
pr, pw := io.Pipe()
go func() {
defer log.PanicHandler()
defer pw.Close()
for _, msg := range messages {
var err error
if useMbox {
err = mboxer.Write(pw, msg.Content.Reader, "", time.Now())
} else {
_, err = io.Copy(pw, msg.Content.Reader)
}
if err != nil {
log.Warnf("failed to write data: %v", err)
}
}
}()
return pr
}
var patchSeriesRe = regexp.MustCompile(
`^.*\[(RFC )?PATCH( [^\]]+)? \d+/\d+] .+$`,
)
|
