314 lines
6.9 KiB
Go
314 lines
6.9 KiB
Go
package widgets
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
"io"
|
|
"os/exec"
|
|
"strings"
|
|
|
|
"github.com/danwakefield/fnmatch"
|
|
"github.com/emersion/go-imap"
|
|
"github.com/emersion/go-message"
|
|
"github.com/emersion/go-message/mail"
|
|
"github.com/gdamore/tcell"
|
|
"github.com/google/shlex"
|
|
"github.com/mattn/go-runewidth"
|
|
|
|
"git.sr.ht/~sircmpwn/aerc2/config"
|
|
"git.sr.ht/~sircmpwn/aerc2/lib"
|
|
"git.sr.ht/~sircmpwn/aerc2/lib/ui"
|
|
"git.sr.ht/~sircmpwn/aerc2/worker/types"
|
|
)
|
|
|
|
type MessageViewer struct {
|
|
conf *config.AercConfig
|
|
err error
|
|
filter *exec.Cmd
|
|
msg *types.MessageInfo
|
|
pager *exec.Cmd
|
|
source io.Reader
|
|
pagerin io.WriteCloser
|
|
sink io.WriteCloser
|
|
grid *ui.Grid
|
|
term *Terminal
|
|
}
|
|
|
|
func formatAddresses(addrs []*imap.Address) string {
|
|
val := bytes.Buffer{}
|
|
for i, addr := range addrs {
|
|
if addr.PersonalName != "" {
|
|
val.WriteString(fmt.Sprintf("%s <%s@%s>",
|
|
addr.PersonalName, addr.MailboxName, addr.HostName))
|
|
} else {
|
|
val.WriteString(fmt.Sprintf("%s@%s",
|
|
addr.MailboxName, addr.HostName))
|
|
}
|
|
if i != len(addrs)-1 {
|
|
val.WriteString(", ")
|
|
}
|
|
}
|
|
return val.String()
|
|
}
|
|
|
|
func NewMessageViewer(conf *config.AercConfig, store *lib.MessageStore,
|
|
msg *types.MessageInfo) *MessageViewer {
|
|
|
|
grid := ui.NewGrid().Rows([]ui.GridSpec{
|
|
{ui.SIZE_EXACT, 3}, // TODO: Based on number of header rows
|
|
{ui.SIZE_WEIGHT, 1},
|
|
}).Columns([]ui.GridSpec{
|
|
{ui.SIZE_WEIGHT, 1},
|
|
})
|
|
|
|
// TODO: let user specify additional headers to show by default
|
|
headers := ui.NewGrid().Rows([]ui.GridSpec{
|
|
{ui.SIZE_EXACT, 1},
|
|
{ui.SIZE_EXACT, 1},
|
|
{ui.SIZE_EXACT, 1},
|
|
}).Columns([]ui.GridSpec{
|
|
{ui.SIZE_WEIGHT, 1},
|
|
{ui.SIZE_WEIGHT, 1},
|
|
})
|
|
headers.AddChild(
|
|
&HeaderView{
|
|
Name: "From",
|
|
Value: formatAddresses(msg.Envelope.From),
|
|
}).At(0, 0)
|
|
headers.AddChild(
|
|
&HeaderView{
|
|
Name: "To",
|
|
Value: formatAddresses(msg.Envelope.To),
|
|
}).At(0, 1)
|
|
headers.AddChild(
|
|
&HeaderView{
|
|
Name: "Subject",
|
|
Value: msg.Envelope.Subject,
|
|
}).At(1, 0).Span(1, 2)
|
|
headers.AddChild(ui.NewFill(' ')).At(2, 0).Span(1, 2)
|
|
|
|
body := ui.NewGrid().Rows([]ui.GridSpec{
|
|
{ui.SIZE_WEIGHT, 1},
|
|
}).Columns([]ui.GridSpec{
|
|
{ui.SIZE_WEIGHT, 1},
|
|
{ui.SIZE_EXACT, 20},
|
|
})
|
|
|
|
var (
|
|
filter *exec.Cmd
|
|
pager *exec.Cmd
|
|
pipe io.WriteCloser
|
|
pagerin io.WriteCloser
|
|
term *Terminal
|
|
viewer *MessageViewer
|
|
)
|
|
cmd, err := shlex.Split(conf.Viewer.Pager)
|
|
if err != nil {
|
|
goto handle_error
|
|
}
|
|
pager = exec.Command(cmd[0], cmd[1:]...)
|
|
|
|
for _, f := range conf.Filters {
|
|
mime := strings.ToLower(msg.BodyStructure.MIMEType) + "/" + strings.ToLower(msg.BodyStructure.MIMESubType)
|
|
switch f.FilterType {
|
|
case config.FILTER_MIMETYPE:
|
|
if fnmatch.Match(f.Filter, mime, 0) {
|
|
filter = exec.Command("sh", "-c", f.Command)
|
|
}
|
|
case config.FILTER_HEADER:
|
|
var header string
|
|
switch f.Header {
|
|
case "subject":
|
|
header = msg.Envelope.Subject
|
|
case "from":
|
|
header = formatAddresses(msg.Envelope.From)
|
|
case "to":
|
|
header = formatAddresses(msg.Envelope.To)
|
|
case "cc":
|
|
header = formatAddresses(msg.Envelope.Cc)
|
|
}
|
|
if f.Regex.Match([]byte(header)) {
|
|
filter = exec.Command("sh", "-c", f.Command)
|
|
}
|
|
}
|
|
if filter != nil {
|
|
break
|
|
}
|
|
}
|
|
if filter != nil {
|
|
pipe, _ = filter.StdinPipe()
|
|
pagerin, _ = pager.StdinPipe()
|
|
} else {
|
|
pipe, _ = pager.StdinPipe()
|
|
}
|
|
|
|
term, _ = NewTerminal(pager)
|
|
// TODO: configure multipart view. I left a spot for it in the grid
|
|
body.AddChild(term).At(0, 0).Span(1, 2)
|
|
|
|
grid.AddChild(headers).At(0, 0)
|
|
grid.AddChild(body).At(1, 0)
|
|
|
|
viewer = &MessageViewer{
|
|
filter: filter,
|
|
grid: grid,
|
|
msg: msg,
|
|
pager: pager,
|
|
pagerin: pagerin,
|
|
sink: pipe,
|
|
term: term,
|
|
}
|
|
|
|
store.FetchBodyPart(msg.Uid, 0, func(reader io.Reader) {
|
|
viewer.source = reader
|
|
viewer.attemptCopy()
|
|
})
|
|
|
|
term.OnStart = func() {
|
|
viewer.attemptCopy()
|
|
}
|
|
|
|
return viewer
|
|
|
|
handle_error:
|
|
viewer = &MessageViewer{
|
|
err: err,
|
|
grid: grid,
|
|
msg: msg,
|
|
}
|
|
return viewer
|
|
}
|
|
|
|
func (mv *MessageViewer) attemptCopy() {
|
|
if mv.source != nil && mv.pager.Process != nil {
|
|
header := make(message.Header)
|
|
header.Set("Content-Transfer-Encoding", mv.msg.BodyStructure.Encoding)
|
|
header.SetContentType(
|
|
mv.msg.BodyStructure.MIMEType, mv.msg.BodyStructure.Params)
|
|
header.SetContentDescription(mv.msg.BodyStructure.Description)
|
|
if mv.filter != nil {
|
|
stdout, _ := mv.filter.StdoutPipe()
|
|
mv.filter.Start()
|
|
go func() {
|
|
_, err := io.Copy(mv.pagerin, stdout)
|
|
if err != nil {
|
|
mv.err = err
|
|
mv.Invalidate()
|
|
}
|
|
mv.pagerin.Close()
|
|
stdout.Close()
|
|
}()
|
|
}
|
|
go func() {
|
|
entity, err := message.New(header, mv.source)
|
|
if err != nil {
|
|
mv.err = err
|
|
mv.Invalidate()
|
|
return
|
|
}
|
|
reader := mail.NewReader(entity)
|
|
part, err := reader.NextPart()
|
|
if err != nil {
|
|
mv.err = err
|
|
mv.Invalidate()
|
|
return
|
|
}
|
|
io.Copy(mv.sink, part.Body)
|
|
mv.sink.Close()
|
|
}()
|
|
}
|
|
}
|
|
|
|
func (mv *MessageViewer) Draw(ctx *ui.Context) {
|
|
if mv.err != nil {
|
|
ctx.Fill(0, 0, ctx.Width(), ctx.Height(), ' ', tcell.StyleDefault)
|
|
ctx.Printf(0, 0, tcell.StyleDefault, "%s", mv.err.Error())
|
|
return
|
|
}
|
|
mv.grid.Draw(ctx)
|
|
}
|
|
|
|
func (mv *MessageViewer) Invalidate() {
|
|
mv.grid.Invalidate()
|
|
}
|
|
|
|
func (mv *MessageViewer) OnInvalidate(fn func(d ui.Drawable)) {
|
|
mv.grid.OnInvalidate(func(_ ui.Drawable) {
|
|
fn(mv)
|
|
})
|
|
}
|
|
|
|
func (mv *MessageViewer) Event(event tcell.Event) bool {
|
|
if mv.term != nil {
|
|
return mv.term.Event(event)
|
|
}
|
|
return false
|
|
}
|
|
|
|
func (mv *MessageViewer) Focus(focus bool) {
|
|
if mv.term != nil {
|
|
mv.term.Focus(focus)
|
|
}
|
|
}
|
|
|
|
type HeaderView struct {
|
|
onInvalidate func(d ui.Drawable)
|
|
|
|
Name string
|
|
Value string
|
|
}
|
|
|
|
func (hv *HeaderView) Draw(ctx *ui.Context) {
|
|
name := hv.Name
|
|
size := runewidth.StringWidth(name)
|
|
lim := ctx.Width() - size - 1
|
|
value := runewidth.Truncate(" "+hv.Value, lim, "…")
|
|
var (
|
|
hstyle tcell.Style
|
|
vstyle tcell.Style
|
|
)
|
|
// TODO: Make this more robust and less dumb
|
|
if hv.Name == "PGP" {
|
|
vstyle = tcell.StyleDefault.Foreground(tcell.ColorGreen)
|
|
hstyle = tcell.StyleDefault.Bold(true)
|
|
} else {
|
|
vstyle = tcell.StyleDefault
|
|
hstyle = tcell.StyleDefault.Bold(true)
|
|
}
|
|
ctx.Fill(0, 0, ctx.Width(), ctx.Height(), ' ', vstyle)
|
|
ctx.Printf(0, 0, hstyle, name)
|
|
ctx.Printf(size, 0, vstyle, value)
|
|
}
|
|
|
|
func (hv *HeaderView) Invalidate() {
|
|
if hv.onInvalidate != nil {
|
|
hv.onInvalidate(hv)
|
|
}
|
|
}
|
|
|
|
func (hv *HeaderView) OnInvalidate(fn func(d ui.Drawable)) {
|
|
hv.onInvalidate = fn
|
|
}
|
|
|
|
type MultipartView struct {
|
|
onInvalidate func(d ui.Drawable)
|
|
}
|
|
|
|
func (mpv *MultipartView) Draw(ctx *ui.Context) {
|
|
ctx.Fill(0, 0, ctx.Width(), ctx.Height(), ' ', tcell.StyleDefault)
|
|
ctx.Fill(0, 0, ctx.Width(), 1, ' ', tcell.StyleDefault.Reverse(true))
|
|
ctx.Printf(0, 0, tcell.StyleDefault.Reverse(true), "text/plain")
|
|
ctx.Printf(0, 1, tcell.StyleDefault, "text/html")
|
|
ctx.Printf(0, 2, tcell.StyleDefault, "application/pgp-si…")
|
|
}
|
|
|
|
func (mpv *MultipartView) Invalidate() {
|
|
if mpv.onInvalidate != nil {
|
|
mpv.onInvalidate(mpv)
|
|
}
|
|
}
|
|
|
|
func (mpv *MultipartView) OnInvalidate(fn func(d ui.Drawable)) {
|
|
mpv.onInvalidate = fn
|
|
}
|