aerc

Working clone of aerc-mail.org
git clone git://git.danielmoch.com/aerc.git
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commit 28fc9fa53da1449498392f83d63a8502a5a958a3
parent 62cd0b08aa82fe19e6d5d96b0341f7cffbb4cb7b
Author: Galen Abell <galen@galenabell.com>
Date:   Sun, 26 May 2019 17:37:39 -0400

Add :save and :pipe commands to viewer

* :save takes a path and saves the current message part to that location
* :pipe is the same as pipe on the account page, but uses the current
  message part rather than the whole email (ie :pipe gzip -d)
* Refactored account:pipe and extracted common pipe code to
  commands.util.QuickTerm
* Added helper command aerc.PushError

Diffstat:
Mcommands/account/pipe.go | 40+++-------------------------------------
Acommands/msgview/pipe.go | 45+++++++++++++++++++++++++++++++++++++++++++++
Acommands/msgview/save.go | 59+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Acommands/util.go | 56++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Mconfig/binds.conf | 1+
Mdoc/aerc.1.scd | 7+++++++
Mwidgets/aerc.go | 4++++
Mwidgets/msgviewer.go | 19+++++++++++++++++++
8 files changed, 194 insertions(+), 37 deletions(-)

diff --git a/commands/account/pipe.go b/commands/account/pipe.go @@ -3,12 +3,9 @@ package account import ( "errors" "io" - "os/exec" - "time" + "git.sr.ht/~sircmpwn/aerc/commands" "git.sr.ht/~sircmpwn/aerc/widgets" - - "github.com/gdamore/tcell" ) func init() { @@ -23,44 +20,13 @@ func Pipe(aerc *widgets.Aerc, args []string) error { store := acct.Messages().Store() msg := acct.Messages().Selected() store.FetchFull([]uint32{msg.Uid}, func(reader io.Reader) { - cmd := exec.Command(args[1], args[2:]...) - pipe, err := cmd.StdinPipe() - if err != nil { - aerc.PushStatus(" "+err.Error(), 10*time.Second). - Color(tcell.ColorDefault, tcell.ColorRed) - return - } - term, err := widgets.NewTerminal(cmd) + term, err := commands.QuickTerm(aerc, args[1:], reader) if err != nil { - aerc.PushStatus(" "+err.Error(), 10*time.Second). - Color(tcell.ColorDefault, tcell.ColorRed) + aerc.PushError(" " + err.Error()) return } name := args[1] + " <" + msg.Envelope.Subject aerc.NewTab(term, name) - term.OnClose = func(err error) { - if err != nil { - aerc.PushStatus(" "+err.Error(), 10*time.Second). - Color(tcell.ColorDefault, tcell.ColorRed) - } else { - aerc.PushStatus("Process complete, press any key to close.", - 10*time.Second) - term.OnEvent = func(event tcell.Event) bool { - aerc.RemoveTab(term) - return true - } - } - } - term.OnStart = func() { - go func() { - _, err := io.Copy(pipe, reader) - if err != nil { - aerc.PushStatus(" "+err.Error(), 10*time.Second). - Color(tcell.ColorDefault, tcell.ColorRed) - } - pipe.Close() - }() - } }) return nil } diff --git a/commands/msgview/pipe.go b/commands/msgview/pipe.go @@ -0,0 +1,45 @@ +package msgview + +import ( + "encoding/base64" + "errors" + "fmt" + "io" + "mime/quotedprintable" + + "git.sr.ht/~sircmpwn/aerc/commands" + "git.sr.ht/~sircmpwn/aerc/widgets" +) + +func init() { + register("pipe", Pipe) +} + +func Pipe(aerc *widgets.Aerc, args []string) error { + if len(args) < 2 { + return errors.New("Usage: :pipe <cmd> [args...]") + } + + mv := aerc.SelectedTab().(*widgets.MessageViewer) + p := mv.CurrentPart() + + p.Store.FetchBodyPart(p.Msg.Uid, p.Index, func(reader io.Reader) { + // email parts are encoded as 7bit (plaintext), quoted-printable, or base64 + switch p.Part.Encoding { + case "base64": + reader = base64.NewDecoder(base64.StdEncoding, reader) + case "quoted-printable": + reader = quotedprintable.NewReader(reader) + } + + term, err := commands.QuickTerm(aerc, args[1:], reader) + if err != nil { + aerc.PushError(" " + err.Error()) + return + } + name := fmt.Sprintf("%s <%s/[%d]", args[1], p.Msg.Envelope.Subject, p.Index) + aerc.NewTab(term, name) + }) + + return nil +} diff --git a/commands/msgview/save.go b/commands/msgview/save.go @@ -0,0 +1,59 @@ +package msgview + +import ( + "encoding/base64" + "errors" + "io" + "mime/quotedprintable" + "os" + "time" + + "git.sr.ht/~sircmpwn/aerc/widgets" + "github.com/mitchellh/go-homedir" +) + +func init() { + register("save", Save) +} + +func Save(aerc *widgets.Aerc, args []string) error { + if len(args) < 2 { + return errors.New("Usage: :save <path>") + } + + mv := aerc.SelectedTab().(*widgets.MessageViewer) + p := mv.CurrentPart() + + p.Store.FetchBodyPart(p.Msg.Uid, p.Index, func(reader io.Reader) { + // email parts are encoded as 7bit (plaintext), quoted-printable, or base64 + switch p.Part.Encoding { + case "base64": + reader = base64.NewDecoder(base64.StdEncoding, reader) + case "quoted-printable": + reader = quotedprintable.NewReader(reader) + } + + target, err := homedir.Expand(args[1]) + if err != nil { + aerc.PushError(" " + err.Error()) + return + } + + f, err := os.Create(target) + if err != nil { + aerc.PushError(" " + err.Error()) + return + } + defer f.Close() + + _, err = io.Copy(f, reader) + if err != nil { + aerc.PushError(" " + err.Error()) + return + } + + aerc.PushStatus("Saved to "+target, 10*time.Second) + }) + + return nil +} diff --git a/commands/util.go b/commands/util.go @@ -0,0 +1,56 @@ +package commands + +import ( + "io" + "os/exec" + "time" + + "git.sr.ht/~sircmpwn/aerc/widgets" + "github.com/gdamore/tcell" +) + +// QuickTerm is an ephemeral terminal for running a single command and quiting. +func QuickTerm(aerc *widgets.Aerc, args []string, stdin io.Reader) (*widgets.Terminal, error) { + cmd := exec.Command(args[0], args[1:]...) + pipe, err := cmd.StdinPipe() + if err != nil { + return nil, err + } + + term, err := widgets.NewTerminal(cmd) + if err != nil { + return nil, err + } + + term.OnClose = func(err error) { + if err != nil { + aerc.PushError(" " + err.Error()) + // remove the tab on error, otherwise it gets stuck + aerc.RemoveTab(term) + } else { + aerc.PushStatus("Process complete, press any key to close.", + 10*time.Second) + term.OnEvent = func(event tcell.Event) bool { + aerc.RemoveTab(term) + return true + } + } + } + + term.OnStart = func() { + status := make(chan error, 1) + + go func() { + _, err := io.Copy(pipe, stdin) + defer pipe.Close() + status <- err + }() + + err := <-status + if err != nil { + aerc.PushError(" " + err.Error()) + } + } + + return term, nil +} diff --git a/config/binds.conf b/config/binds.conf @@ -51,6 +51,7 @@ Rr = :reply -a<Enter> Rq = :reply -aq<Enter> <C-k> = :prev-part<Enter> <C-j> = :next-part<Enter> +S = :save<space> [compose] # Keybindings used when the embedded terminal is not selected in the compose diff --git a/doc/aerc.1.scd b/doc/aerc.1.scd @@ -91,6 +91,13 @@ These commands work in any context. ## MESSAGE VIEW COMMANDS +*pipe* <cmd> + Downloads and pipes the current message part into the given shell command, + and opens a new terminal tab to show the result. + +*save* <path> + Saves the current message part to the given path. + *close* Closes the message viewer. diff --git a/widgets/aerc.go b/widgets/aerc.go @@ -243,6 +243,10 @@ func (aerc *Aerc) PushStatus(text string, expiry time.Duration) *StatusMessage { return aerc.statusline.Push(text, expiry) } +func (aerc *Aerc) PushError(text string) { + aerc.PushStatus(text, 10*time.Second).Color(tcell.ColorDefault, tcell.ColorRed) +} + func (aerc *Aerc) focus(item libui.Interactive) { if aerc.focused == item { return diff --git a/widgets/msgviewer.go b/widgets/msgviewer.go @@ -199,6 +199,18 @@ func (mv *MessageViewer) OnInvalidate(fn func(d ui.Drawable)) { }) } +func (mv *MessageViewer) CurrentPart() *PartInfo { + switcher := mv.switcher + part := switcher.parts[switcher.selected] + + return &PartInfo{ + Index: part.index, + Msg: part.msg, + Part: part.part, + Store: part.store, + } +} + func (mv *MessageViewer) PreviousPart() { switcher := mv.switcher for { @@ -291,6 +303,13 @@ type PartViewer struct { term *Terminal } +type PartInfo struct { + Index []int + Msg *types.MessageInfo + Part *imap.BodyStructure + Store *lib.MessageStore +} + func NewPartViewer(conf *config.AercConfig, store *lib.MessageStore, msg *types.MessageInfo, part *imap.BodyStructure, index []int) (*PartViewer, error) {