aerc/commands/msg/pipe.go

262 lines
5.8 KiB
Go
Raw Normal View History

2019-07-05 18:21:12 +02:00
package msg
import (
"errors"
"fmt"
"io"
2019-07-09 00:19:08 +02:00
"os/exec"
"regexp"
"sort"
"strconv"
"time"
2019-07-05 18:21:12 +02:00
"git.sr.ht/~rjarry/aerc/commands"
"git.sr.ht/~rjarry/aerc/logging"
"git.sr.ht/~rjarry/aerc/widgets"
mboxer "git.sr.ht/~rjarry/aerc/worker/mbox"
"git.sr.ht/~rjarry/aerc/worker/types"
2019-07-09 00:19:08 +02:00
"git.sr.ht/~sircmpwn/getopt"
2019-07-05 18:21:12 +02:00
)
type Pipe struct{}
func init() {
register(Pipe{})
}
func (Pipe) Aliases() []string {
2019-07-05 18:21:12 +02:00
return []string{"pipe"}
}
func (Pipe) Complete(aerc *widgets.Aerc, args []string) []string {
2019-07-05 18:21:12 +02:00
return nil
}
func (Pipe) Execute(aerc *widgets.Aerc, args []string) error {
2019-07-05 18:21:12 +02:00
var (
2019-07-09 00:19:08 +02:00
background bool
pipeFull bool
pipePart bool
2019-07-05 18:21:12 +02:00
)
// TODO: let user specify part by index or preferred mimetype
2019-07-09 00:19:08 +02:00
opts, optind, err := getopt.Getopts(args, "bmp")
2019-07-05 18:21:12 +02:00
if err != nil {
return err
}
for _, opt := range opts {
switch opt.Option {
2019-07-09 00:19:08 +02:00
case 'b':
background = true
2019-07-05 18:21:12 +02:00
case 'm':
if pipePart {
return errors.New("-m and -p are mutually exclusive")
}
pipeFull = true
case 'p':
if pipeFull {
return errors.New("-m and -p are mutually exclusive")
}
pipePart = true
}
}
cmd := args[optind:]
if len(cmd) == 0 {
return errors.New("Usage: pipe [-mp] <cmd> [args...]")
}
provider := aerc.SelectedTabContent().(widgets.ProvidesMessage)
2019-07-05 18:21:12 +02:00
if !pipeFull && !pipePart {
if _, ok := provider.(*widgets.MessageViewer); ok {
pipePart = true
} else if _, ok := provider.(*widgets.AccountView); ok {
pipeFull = true
} else {
return errors.New(
"Neither -m nor -p specified and cannot infer default")
}
}
2019-07-09 00:19:08 +02:00
doTerm := func(reader io.Reader, name string) {
term, err := commands.QuickTerm(aerc, cmd, reader)
if err != nil {
aerc.PushError(err.Error())
2019-07-09 00:19:08 +02:00
return
}
aerc.NewTab(term, name)
}
doExec := func(reader io.Reader) {
ecmd := exec.Command(cmd[0], cmd[1:]...)
2019-07-09 00:50:40 +02:00
pipe, err := ecmd.StdinPipe()
if err != nil {
return
}
go func() {
defer logging.PanicHandler()
2019-07-09 00:50:40 +02:00
defer pipe.Close()
_, err := io.Copy(pipe, reader)
if err != nil {
logging.Errorf("failed to send data to pipe: %v", err)
}
2019-07-09 00:50:40 +02:00
}()
err = ecmd.Run()
2019-07-09 00:19:08 +02:00
if err != nil {
aerc.PushError(err.Error())
2019-07-09 00:19:08 +02:00
} else {
2019-07-09 00:32:31 +02:00
if ecmd.ProcessState.ExitCode() != 0 {
aerc.PushError(fmt.Sprintf(
"%s: completed with status %d", cmd[0],
ecmd.ProcessState.ExitCode()))
} else {
aerc.PushStatus(fmt.Sprintf(
"%s: completed with status %d", cmd[0],
ecmd.ProcessState.ExitCode()), 10*time.Second)
2019-07-09 00:32:31 +02:00
}
2019-07-09 00:19:08 +02:00
}
}
2019-07-05 18:21:12 +02:00
if pipeFull {
var uids []uint32
var title string
h := newHelper(aerc)
store, err := h.store()
if err != 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 logging.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.
aerc.PushError("Failed to fetch all messages")
if len(messages) == 0 {
return
}
}
is_git_patches := true
for _, msg := range messages {
info := store.Messages[msg.Content.Uid]
if info == nil || !gitMessageIdRe.MatchString(info.Envelope.MessageId) {
is_git_patches = false
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
}
msgidi := padGitMessageId(infoi.Envelope.MessageId)
msgidj := padGitMessageId(infoj.Envelope.MessageId)
return msgidi < msgidj
})
}
reader := newMessagesReader(messages, len(messages) > 1)
2019-07-09 00:19:08 +02:00
if background {
doExec(reader)
2019-07-09 00:19:08 +02:00
} else {
doTerm(reader, fmt.Sprintf("%s <%s", cmd[0], title))
2019-07-05 18:21:12 +02:00
}
}()
2019-07-05 18:21:12 +02:00
} else if pipePart {
mv, ok := provider.(*widgets.MessageViewer)
if !ok {
return fmt.Errorf("can only pipe message part from a message view")
}
2019-07-05 18:21:12 +02:00
p := provider.SelectedMessagePart()
2020-07-05 14:27:21 +02:00
if p == nil {
return fmt.Errorf("could not fetch message part")
}
mv.MessageView().FetchBodyPart(p.Index, func(reader io.Reader) {
2019-07-09 00:19:08 +02:00
if background {
doExec(reader)
} else {
name := fmt.Sprintf("%s <%s/[%d]",
cmd[0], p.Msg.Envelope.Subject, p.Index)
doTerm(reader, name)
2019-07-05 18:21:12 +02:00
}
})
}
provider.Store().Marker().ClearVisualMark()
2019-07-05 18:21:12 +02:00
return nil
}
func newMessagesReader(messages []*types.FullMessage, useMbox bool) io.Reader {
pr, pw := io.Pipe()
go func() {
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 {
logging.Warnf("failed to write data: %v", err)
}
}
}()
return pr
}
var gitMessageIdRe = regexp.MustCompile(`^(\d+\.\d+)-(\d+)-(.+)$`)
// Git send-email Message-Id headers have the following format:
//
// DATETIME.PID-NUM-COMMITTER
//
// Return a copy of the message id with NUM zero-padded to three characters.
func padGitMessageId(msgId string) string {
matches := gitMessageIdRe.FindStringSubmatch(msgId)
if matches == nil {
return msgId
}
number, err := strconv.Atoi(matches[2])
if err != nil {
return msgId
}
return fmt.Sprintf("%s-%03d-%s", matches[1], number, matches[3])
}