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Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
nemunaire 2026-03-29 14:27:46 +02:00 • committed by Pierre-Olivier Mercier
commit fcc6f3eb4c
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21
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MIT License
Copyright (c) 2026 nemunaire
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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module github.com/nemunaire/mqv
go 1.25.8
require (
github.com/atotto/clipboard v0.1.4 // indirect
github.com/aymanbagabas/go-osc52/v2 v2.0.1 // indirect
github.com/charmbracelet/bubbles v1.0.0 // indirect
github.com/charmbracelet/bubbletea v1.3.10 // indirect
github.com/charmbracelet/colorprofile v0.4.1 // indirect
github.com/charmbracelet/harmonica v0.2.0 // indirect
github.com/charmbracelet/lipgloss v1.1.0 // indirect
github.com/charmbracelet/x/ansi v0.11.6 // indirect
github.com/charmbracelet/x/cellbuf v0.0.15 // indirect
github.com/charmbracelet/x/term v0.2.2 // indirect
github.com/clipperhouse/displaywidth v0.9.0 // indirect
github.com/clipperhouse/stringish v0.1.1 // indirect
github.com/clipperhouse/uax29/v2 v2.5.0 // indirect
github.com/erikgeiser/coninput v0.0.0-20211004153227-1c3628e74d0f // indirect
github.com/lucasb-eyer/go-colorful v1.3.0 // indirect
github.com/mattn/go-isatty v0.0.20 // indirect
github.com/mattn/go-localereader v0.0.1 // indirect
github.com/mattn/go-runewidth v0.0.19 // indirect
github.com/muesli/ansi v0.0.0-20230316100256-276c6243b2f6 // indirect
github.com/muesli/cancelreader v0.2.2 // indirect
github.com/muesli/termenv v0.16.0 // indirect
github.com/rivo/uniseg v0.4.7 // indirect
github.com/sahilm/fuzzy v0.1.1 // indirect
github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e // indirect
golang.org/x/sys v0.38.0 // indirect
golang.org/x/text v0.35.0 // indirect
)

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github.com/atotto/clipboard v0.1.4 h1:EH0zSVneZPSuFR11BlR9YppQTVDbh5+16AmcJi4g1z4=
github.com/atotto/clipboard v0.1.4/go.mod h1:ZY9tmq7sm5xIbd9bOK4onWV4S6X0u6GY7Vn0Yu86PYI=
github.com/aymanbagabas/go-osc52/v2 v2.0.1 h1:HwpRHbFMcZLEVr42D4p7XBqjyuxQH5SMiErDT4WkJ2k=
github.com/aymanbagabas/go-osc52/v2 v2.0.1/go.mod h1:uYgXzlJ7ZpABp8OJ+exZzJJhRNQ2ASbcXHWsFqH8hp8=
github.com/charmbracelet/bubbles v1.0.0 h1:12J8/ak/uCZEMQ6KU7pcfwceyjLlWsDLAxB5fXonfvc=
github.com/charmbracelet/bubbles v1.0.0/go.mod h1:9d/Zd5GdnauMI5ivUIVisuEm3ave1XwXtD1ckyV6r3E=
github.com/charmbracelet/bubbletea v1.3.10 h1:otUDHWMMzQSB0Pkc87rm691KZ3SWa4KUlvF9nRvCICw=
github.com/charmbracelet/bubbletea v1.3.10/go.mod h1:ORQfo0fk8U+po9VaNvnV95UPWA1BitP1E0N6xJPlHr4=
github.com/charmbracelet/colorprofile v0.4.1 h1:a1lO03qTrSIRaK8c3JRxJDZOvhvIeSco3ej+ngLk1kk=
github.com/charmbracelet/colorprofile v0.4.1/go.mod h1:U1d9Dljmdf9DLegaJ0nGZNJvoXAhayhmidOdcBwAvKk=
github.com/charmbracelet/harmonica v0.2.0 h1:8NxJWRWg/bzKqqEaaeFNipOu77YR5t8aSwG4pgaUBiQ=
github.com/charmbracelet/harmonica v0.2.0/go.mod h1:KSri/1RMQOZLbw7AHqgcBycp8pgJnQMYYT8QZRqZ1Ao=
github.com/charmbracelet/lipgloss v1.1.0 h1:vYXsiLHVkK7fp74RkV7b2kq9+zDLoEU4MZoFqR/noCY=
github.com/charmbracelet/lipgloss v1.1.0/go.mod h1:/6Q8FR2o+kj8rz4Dq0zQc3vYf7X+B0binUUBwA0aL30=
github.com/charmbracelet/x/ansi v0.11.6 h1:GhV21SiDz/45W9AnV2R61xZMRri5NlLnl6CVF7ihZW8=
github.com/charmbracelet/x/ansi v0.11.6/go.mod h1:2JNYLgQUsyqaiLovhU2Rv/pb8r6ydXKS3NIttu3VGZQ=
github.com/charmbracelet/x/cellbuf v0.0.15 h1:ur3pZy0o6z/R7EylET877CBxaiE1Sp1GMxoFPAIztPI=
github.com/charmbracelet/x/cellbuf v0.0.15/go.mod h1:J1YVbR7MUuEGIFPCaaZ96KDl5NoS0DAWkskup+mOY+Q=
github.com/charmbracelet/x/term v0.2.2 h1:xVRT/S2ZcKdhhOuSP4t5cLi5o+JxklsoEObBSgfgZRk=
github.com/charmbracelet/x/term v0.2.2/go.mod h1:kF8CY5RddLWrsgVwpw4kAa6TESp6EB5y3uxGLeCqzAI=
github.com/clipperhouse/displaywidth v0.9.0 h1:Qb4KOhYwRiN3viMv1v/3cTBlz3AcAZX3+y9OLhMtAtA=
github.com/clipperhouse/displaywidth v0.9.0/go.mod h1:aCAAqTlh4GIVkhQnJpbL0T/WfcrJXHcj8C0yjYcjOZA=
github.com/clipperhouse/stringish v0.1.1 h1:+NSqMOr3GR6k1FdRhhnXrLfztGzuG+VuFDfatpWHKCs=
github.com/clipperhouse/stringish v0.1.1/go.mod h1:v/WhFtE1q0ovMta2+m+UbpZ+2/HEXNWYXQgCt4hdOzA=
github.com/clipperhouse/uax29/v2 v2.5.0 h1:x7T0T4eTHDONxFJsL94uKNKPHrclyFI0lm7+w94cO8U=
github.com/clipperhouse/uax29/v2 v2.5.0/go.mod h1:Wn1g7MK6OoeDT0vL+Q0SQLDz/KpfsVRgg6W7ihQeh4g=
github.com/erikgeiser/coninput v0.0.0-20211004153227-1c3628e74d0f h1:Y/CXytFA4m6baUTXGLOoWe4PQhGxaX0KpnayAqC48p4=
github.com/erikgeiser/coninput v0.0.0-20211004153227-1c3628e74d0f/go.mod h1:vw97MGsxSvLiUE2X8qFplwetxpGLQrlU1Q9AUEIzCaM=
github.com/lucasb-eyer/go-colorful v1.3.0 h1:2/yBRLdWBZKrf7gB40FoiKfAWYQ0lqNcbuQwVHXptag=
github.com/lucasb-eyer/go-colorful v1.3.0/go.mod h1:R4dSotOR9KMtayYi1e77YzuveK+i7ruzyGqttikkLy0=
github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
github.com/mattn/go-localereader v0.0.1 h1:ygSAOl7ZXTx4RdPYinUpg6W99U8jWvWi9Ye2JC/oIi4=
github.com/mattn/go-localereader v0.0.1/go.mod h1:8fBrzywKY7BI3czFoHkuzRoWE9C+EiG4R1k4Cjx5p88=
github.com/mattn/go-runewidth v0.0.19 h1:v++JhqYnZuu5jSKrk9RbgF5v4CGUjqRfBm05byFGLdw=
github.com/mattn/go-runewidth v0.0.19/go.mod h1:XBkDxAl56ILZc9knddidhrOlY5R/pDhgLpndooCuJAs=
github.com/muesli/ansi v0.0.0-20230316100256-276c6243b2f6 h1:ZK8zHtRHOkbHy6Mmr5D264iyp3TiX5OmNcI5cIARiQI=
github.com/muesli/ansi v0.0.0-20230316100256-276c6243b2f6/go.mod h1:CJlz5H+gyd6CUWT45Oy4q24RdLyn7Md9Vj2/ldJBSIo=
github.com/muesli/cancelreader v0.2.2 h1:3I4Kt4BQjOR54NavqnDogx/MIoWBFa0StPA8ELUXHmA=
github.com/muesli/cancelreader v0.2.2/go.mod h1:3XuTXfFS2VjM+HTLZY9Ak0l6eUKfijIfMUZ4EgX0QYo=
github.com/muesli/termenv v0.16.0 h1:S5AlUN9dENB57rsbnkPyfdGuWIlkmzJjbFf0Tf5FWUc=
github.com/muesli/termenv v0.16.0/go.mod h1:ZRfOIKPFDYQoDFF4Olj7/QJbW60Ol/kL1pU3VfY/Cnk=
github.com/rivo/uniseg v0.4.7 h1:WUdvkW8uEhrYfLC4ZzdpI2ztxP1I582+49Oc5Mq64VQ=
github.com/rivo/uniseg v0.4.7/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
github.com/sahilm/fuzzy v0.1.1 h1:ceu5RHF8DGgoi+/dR5PsECjCDH1BE3Fnmpo7aVXOdRA=
github.com/sahilm/fuzzy v0.1.1/go.mod h1:VFvziUEIMCrT6A6tw2RFIXPXXmzXbOsSHF0DOI8ZK9Y=
github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e h1:JVG44RsyaB9T2KIHavMF/ppJZNG9ZpyihvCd0w101no=
github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e/go.mod h1:RbqR21r5mrJuqunuUZ/Dhy/avygyECGrLceyNeo4LiM=
golang.org/x/sys v0.0.0-20210809222454-d867a43fc93e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.38.0 h1:3yZWxaJjBmCWXqhN1qh02AkOnCQ1poK6oF+a7xWL6Gc=
golang.org/x/sys v0.38.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
golang.org/x/text v0.3.8 h1:nAL+RVCQ9uMn3vJZbV+MRnydTJFPf8qqY42YiA6MrqY=
golang.org/x/text v0.3.8/go.mod h1:E6s5w1FMmriuDzIBO73fBruAKo1PCIq6d2Q6DHfQ8WQ=
golang.org/x/text v0.35.0 h1:JOVx6vVDFokkpaq1AEptVzLTpDe9KGpj5tR4/X+ybL8=
golang.org/x/text v0.35.0/go.mod h1:khi/HExzZJ2pGnjenulevKNX1W67CUy0AsXcNubPGCA=

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package main
import (
"fmt"
"io"
"github.com/charmbracelet/bubbles/list"
tea "github.com/charmbracelet/bubbletea"
)
type queueItem struct {
entry QueueEntry
}
func (q queueItem) FilterValue() string { return q.entry.Sender + " " + q.entry.Subject }
func (q queueItem) Title() string { return q.entry.Subject }
func (q queueItem) Description() string {
return fmt.Sprintf("%-40s %s", q.entry.Sender, q.entry.Date.Format("Jan 02 15:04"))
}
// itemDelegate renders each queue entry as a single line.
type itemDelegate struct{}
func (d itemDelegate) Height() int { return 1 }
func (d itemDelegate) Spacing() int { return 0 }
func (d itemDelegate) Update(_ tea.Msg, _ *list.Model) tea.Cmd { return nil }
func (d itemDelegate) Render(w io.Writer, m list.Model, index int, item list.Item) {
qi, ok := item.(queueItem)
if !ok {
return
}
e := qi.entry
date := e.Date.Format("Jan _2 15:04")
from := e.Sender
if len(from) > 30 {
from = from[:28] + ".."
}
subj := e.Subject
if subj == "" {
subj = dimStyle.Render("loading…")
}
line := fmt.Sprintf(" %-10s %-14s %-30s %s", e.ID, date, from, subj)
if index == m.Index() {
fmt.Fprint(w, selectedStyle.Render(line))
} else {
fmt.Fprint(w, line)
}
}

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package main
import (
"fmt"
"os"
tea "github.com/charmbracelet/bubbletea"
)
func main() {
p := tea.NewProgram(initialModel(), tea.WithAltScreen())
if _, err := p.Run(); err != nil {
fmt.Fprintln(os.Stderr, "error:", err)
os.Exit(1)
}
}

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package main
import (
"encoding/base64"
"fmt"
"io"
"mime"
"mime/multipart"
"mime/quotedprintable"
"net/mail"
"os"
"os/exec"
"path/filepath"
"sort"
"strings"
"golang.org/x/text/encoding/charmap"
"golang.org/x/text/encoding/ianaindex"
)
var wordDecoder = &mime.WordDecoder{
CharsetReader: func(charset string, input io.Reader) (io.Reader, error) {
// Fast path for the most common legacy charsets
switch strings.ToLower(charset) {
case "iso-8859-1", "latin-1":
return charmap.ISO8859_1.NewDecoder().Reader(input), nil
case "windows-1252", "cp1252":
return charmap.Windows1252.NewDecoder().Reader(input), nil
}
// Fall back to IANA index for everything else
enc, err := ianaindex.MIME.Encoding(charset)
if err != nil {
return nil, fmt.Errorf("unsupported charset %q: %w", charset, err)
}
return enc.NewDecoder().Reader(input), nil
},
}
// fetchHeaders runs postcat -qh and returns only the headers.
func fetchHeaders(id string) (string, error) {
out, err := exec.Command("postcat", "-qh", id).Output()
if err != nil {
return "", fmt.Errorf("postcat -qh %s: %w", id, err)
}
return string(out), nil
}
// fetchMessage runs postcat -qbh and returns the raw EML content.
func fetchMessage(id string) (string, error) {
out, err := exec.Command("postcat", "-qbh", id).Output()
if err != nil {
return "", fmt.Errorf("postcat -qbh %s: %w", id, err)
}
return string(out), nil
}
// extractSubject scans raw EML output for the Subject field and decodes it.
// It handles folded headers (RFC 2822 continuation lines) and RFC 2047 encoded words.
// We do not stop at blank lines because postcat output may include envelope records
// separated from the RFC 2822 headers by a blank line.
func extractSubject(raw string) string {
lines := strings.Split(raw, "\n")
for i, line := range lines {
if !strings.HasPrefix(strings.ToLower(line), "subject:") {
continue
}
value := line[len("subject:"):]
// Collect folded continuation lines (start with whitespace)
for j := i + 1; j < len(lines); j++ {
if len(lines[j]) > 0 && (lines[j][0] == ' ' || lines[j][0] == '\t') {
value += " " + strings.TrimSpace(lines[j])
} else {
break
}
}
value = strings.TrimSpace(value)
if decoded, err := wordDecoder.DecodeHeader(value); err == nil {
return decoded
}
return value
}
return "(no subject)"
}
// renderMessage parses raw EML and returns a human-readable string suitable
// for display in the viewport. Headers are RFC 2047 decoded, and the body is
// decoded from quoted-printable or base64 transfer encoding.
// When fullHeaders is true all headers are shown (sorted); otherwise only the
// curated subset (Date, From, To, Cc, Reply-To, Subject) is displayed.
func renderMessage(raw string, fullHeaders bool) string {
msg, err := mail.ReadMessage(strings.NewReader(raw))
if err != nil {
// postcat may prefix envelope lines before RFC 2822 headers; fall back.
return raw
}
var sb strings.Builder
if fullHeaders {
names := make([]string, 0, len(msg.Header))
for name := range msg.Header {
names = append(names, name)
}
sort.Strings(names)
for _, name := range names {
for _, val := range msg.Header[name] {
decoded, err := wordDecoder.DecodeHeader(val)
if err != nil {
decoded = val
}
sb.WriteString(name)
sb.WriteString(": ")
sb.WriteString(decoded)
sb.WriteByte('\n')
}
}
} else {
for _, name := range []string{"Date", "From", "To", "Cc", "Reply-To", "Subject"} {
val := msg.Header.Get(name)
if val == "" {
continue
}
decoded, err := wordDecoder.DecodeHeader(val)
if err != nil {
decoded = val
}
sb.WriteString(headerKeyStyle.Render(name + ":"))
sb.WriteString(" ")
sb.WriteString(decoded)
sb.WriteByte('\n')
}
}
sb.WriteByte('\n')
// Decode and write the body.
ct := msg.Header.Get("Content-Type")
cte := strings.ToLower(strings.TrimSpace(msg.Header.Get("Content-Transfer-Encoding")))
cd := msg.Header.Get("Content-Disposition")
body := renderPart(ct, cte, cd, msg.Body)
sb.WriteString(body)
return sb.String()
}
// renderPart decodes a single MIME part (or the top-level message body) given
// its Content-Type, Content-Transfer-Encoding, and Content-Disposition header values.
func renderPart(ct, cte, cd string, r io.Reader) string {
mediaType, params, err := mime.ParseMediaType(ct)
if err != nil {
mediaType = "text/plain"
params = map[string]string{}
}
// Decode transfer encoding first.
var decoded io.Reader
switch cte {
case "quoted-printable":
decoded = quotedprintable.NewReader(r)
case "base64":
decoded = base64.NewDecoder(base64.StdEncoding, r)
default:
decoded = r
}
if strings.HasPrefix(mediaType, "multipart/") {
boundary := params["boundary"]
if boundary == "" {
return "[multipart message with missing boundary]\n"
}
return renderMultipart(multipart.NewReader(decoded, boundary), mediaType)
}
// Non-text, non-multipart parts are binary attachments — show a placeholder.
if !strings.HasPrefix(mediaType, "text/") {
data, _ := io.ReadAll(decoded)
name := partName(params, cd)
size := len(data)
label := fmt.Sprintf("\n[ Content-Type: %s", mediaType)
if name != "" {
label += " - Filename: " + name
}
if size > 0 {
label += fmt.Sprintf(" - Size: %s", formatSize(size))
}
label += " ]"
return attachStyle.Render(label) + "\n\n"
}
// Decode charset for text parts.
if charset, ok := params["charset"]; ok && charset != "" {
if cr, err := wordDecoder.CharsetReader(charset, decoded); err == nil {
decoded = cr
}
}
data, err := io.ReadAll(decoded)
if err != nil {
return fmt.Sprintf("[error reading body: %v]\n", err)
}
if mediaType == "text/html" {
return renderHTML(string(data))
}
return string(data)
}
// partName extracts a filename/name from Content-Type params or Content-Disposition.
func partName(ctParams map[string]string, cd string) string {
if n := ctParams["name"]; n != "" {
if decoded, err := wordDecoder.DecodeHeader(n); err == nil {
return decoded
}
return n
}
if cd != "" {
if _, cdParams, err := mime.ParseMediaType(cd); err == nil {
if fn := cdParams["filename"]; fn != "" {
if decoded, err := wordDecoder.DecodeHeader(fn); err == nil {
return decoded
}
return fn
}
}
}
return ""
}
// formatSize formats a byte count as a human-readable string.
func formatSize(n int) string {
switch {
case n >= 1024*1024:
return fmt.Sprintf("%.1f MB", float64(n)/(1024*1024))
case n >= 1024:
return fmt.Sprintf("%.1f kB", float64(n)/1024)
default:
return fmt.Sprintf("%d B", n)
}
}
// renderMultipart walks multipart parts, preferring text/plain. Nested
// multipart/* is handled recursively. Parts in mixed/related messages are
// separated by a colored rule.
func renderMultipart(mr *multipart.Reader, parentType string) string {
type candidate struct {
mediaType string
content string
}
var parts []candidate
for {
p, err := mr.NextPart()
if err != nil { // io.EOF or real error
break
}
partCT := p.Header.Get("Content-Type")
partCTE := strings.ToLower(strings.TrimSpace(p.Header.Get("Content-Transfer-Encoding")))
partCD := p.Header.Get("Content-Disposition")
text := renderPart(partCT, partCTE, partCD, p)
mt, _, _ := mime.ParseMediaType(partCT)
parts = append(parts, candidate{mt, text})
}
if parentType == "multipart/alternative" {
// Prefer plain text.
for _, c := range parts {
if c.mediaType == "text/plain" {
return c.content
}
}
// Fall back to first non-empty part.
for _, c := range parts {
if strings.TrimSpace(c.content) != "" {
return c.content
}
}
return ""
}
// For mixed/related/etc, join non-empty parts with a colored separator.
var sb strings.Builder
first := true
for _, c := range parts {
if strings.TrimSpace(c.content) == "" {
continue
}
if !first {
label := "\n── " + c.mediaType + " "
rule := label + strings.Repeat("─", max(0, 60-len(label)))
sb.WriteString(partSepStyle.Render(rule))
sb.WriteByte('\n')
}
sb.WriteString(c.content)
if !strings.HasSuffix(c.content, "\n") {
sb.WriteByte('\n')
}
first = false
}
return sb.String()
}
// renderHTML renders HTML content to plain text using w3m if available,
// otherwise returns the raw HTML.
func renderHTML(html string) string {
w3m, err := exec.LookPath("w3m")
if err != nil {
return html
}
f, err := os.CreateTemp("", "postfixmutt-*.html")
if err != nil {
return html
}
defer os.Remove(f.Name())
if _, err := f.WriteString(html); err != nil {
f.Close()
return html
}
f.Close()
out, err := exec.Command(w3m, "-T", "text/html", "-dump", "-o", "display_link_number=1", f.Name()).Output()
if err != nil {
return html
}
return string(out)
}
// saveMessage writes the raw EML content to ~/QUEUEID.eml.
func saveMessage(id, content string) (string, error) {
home, err := os.UserHomeDir()
if err != nil {
return "", fmt.Errorf("could not determine home directory: %w", err)
}
path := filepath.Join(home, id+".eml")
if err := os.WriteFile(path, []byte(content), 0600); err != nil {
return "", fmt.Errorf("write %s: %w", path, err)
}
return path, nil
}

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package main
import (
"fmt"
"strings"
"github.com/charmbracelet/bubbles/list"
"github.com/charmbracelet/bubbles/progress"
"github.com/charmbracelet/bubbles/viewport"
tea "github.com/charmbracelet/bubbletea"
"github.com/charmbracelet/x/ansi"
)
// ── App state ─────────────────────────────────────────────────────────────────
type appState int
const (
stateList appState = iota
stateMessage appState = iota
)
// ── Model ─────────────────────────────────────────────────────────────────────
type Model struct {
state appState
list list.Model
progress progress.Model
viewport viewport.Model
entries []QueueEntry
entryIndex map[string]int // queue ID → entries index
loadingTotal int
loadingDone int
currentRaw string
currentID string
showFullHeaders bool
err error
saveNotice string
width int
height int
}
func initialModel() Model {
l := list.New(nil, itemDelegate{}, 80, 20)
l.Title = "Postfix Queue"
l.SetShowStatusBar(false)
l.SetFilteringEnabled(false)
l.Styles.Title = titleStyle
l.SetShowHelp(false)
prog := progress.New(
progress.WithDefaultGradient(),
progress.WithoutPercentage(),
)
vp := viewport.New(80, 20)
return Model{
state: stateList,
list: l,
progress: prog,
viewport: vp,
}
}
// refreshViewport re-renders the current message and sets wrapped content.
func (m *Model) refreshViewport() {
rendered := renderMessage(m.currentRaw, m.showFullHeaders)
headerSection, body, _ := strings.Cut(rendered, "\n\n")
var result []string
for line := range strings.SplitSeq(headerSection, "\n") {
parts := strings.Split(ansi.Wrap(line, m.viewport.Width-4, ""), "\n")
result = append(result, parts[0])
for _, continuation := range parts[1:] {
result = append(result, " "+continuation)
}
}
result = append(result, "")
result = append(result, strings.Split(ansi.Wrap(body, m.viewport.Width, ""), "\n")...)
m.viewport.SetContent(strings.Join(result, "\n"))
}
// ── Init ──────────────────────────────────────────────────────────────────────
func (m Model) Init() tea.Cmd {
return loadQueueCmd()
}
// ── Update ────────────────────────────────────────────────────────────────────
func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
switch msg := msg.(type) {
case tea.WindowSizeMsg:
m.width = msg.Width
m.height = msg.Height
m.progress.Width = msg.Width - 4
m.list.SetSize(msg.Width, msg.Height-2)
m.viewport.Width = msg.Width
m.viewport.Height = msg.Height - 2
if m.state == stateMessage && m.currentRaw != "" {
m.refreshViewport()
}
return m, nil
case queueParsedMsg:
m.entries = msg.entries
m.entryIndex = make(map[string]int, len(msg.entries))
m.loadingTotal = len(msg.entries)
m.loadingDone = 0
m.err = nil
items := make([]list.Item, len(msg.entries))
for i, e := range msg.entries {
items[i] = queueItem{e}
m.entryIndex[e.ID] = i
}
m.list.SetItems(items)
if m.loadingTotal == 0 {
return m, nil
}
cmds := make([]tea.Cmd, len(msg.entries))
for i, e := range msg.entries {
cmds[i] = fetchSubjectCmd(e.ID)
}
return m, tea.Batch(cmds...)
case subjectFetchedMsg:
if idx, ok := m.entryIndex[msg.id]; ok {
m.entries[idx].Subject = msg.subject
m.list.SetItem(idx, queueItem{m.entries[idx]})
}
m.loadingDone++
pct := float64(m.loadingDone) / float64(m.loadingTotal)
return m, m.progress.SetPercent(pct)
case progress.FrameMsg:
pm, cmd := m.progress.Update(msg)
m.progress = pm.(progress.Model)
return m, cmd
case queueErrMsg:
m.err = msg.err
return m, nil
case messageLoadedMsg:
m.currentRaw = msg.content
m.currentID = msg.id
m.showFullHeaders = false
m.refreshViewport()
m.viewport.GotoTop()
m.state = stateMessage
return m, nil
case messageErrMsg:
m.err = msg.err
return m, nil
case savedMsg:
m.saveNotice = "Saved: " + msg.path
return m, nil
case saveErrMsg:
m.saveNotice = "Save error: " + msg.err.Error()
return m, nil
case tea.KeyMsg:
switch m.state {
case stateList:
switch msg.String() {
case "q", "ctrl+c":
return m, tea.Quit
case "r":
m.entries = nil
m.entryIndex = nil
m.loadingTotal = 0
m.loadingDone = 0
m.list.SetItems(nil)
_ = m.progress.SetPercent(0)
return m, loadQueueCmd()
case "enter":
if item, ok := m.list.SelectedItem().(queueItem); ok {
return m, loadMessageCmd(item.entry.ID)
}
}
case stateMessage:
switch msg.String() {
case "q":
m.state = stateList
m.saveNotice = ""
return m, nil
case "ctrl+c":
return m, tea.Quit
case "s":
return m, saveCmd(m.currentID, m.currentRaw)
case "H":
m.showFullHeaders = !m.showFullHeaders
m.refreshViewport()
m.viewport.GotoTop()
return m, nil
}
var cmd tea.Cmd
m.viewport, cmd = m.viewport.Update(msg)
return m, cmd
}
}
var cmd tea.Cmd
switch m.state {
case stateList:
m.list, cmd = m.list.Update(msg)
case stateMessage:
m.viewport, cmd = m.viewport.Update(msg)
}
return m, cmd
}
// ── View ──────────────────────────────────────────────────────────────────────
func (m Model) View() string {
if m.err != nil {
return errorStyle.Render("Error: "+m.err.Error()) + "\n\nPress q to quit."
}
switch m.state {
case stateList:
if m.entries == nil {
return titleStyle.Render("Postfix Queue") + "\n\n" +
dimStyle.Render(" Fetching queue list…")
}
return m.list.View() + "\n" + m.renderBottom()
case stateMessage:
header := titleStyle.Render(fmt.Sprintf("Message: %s", m.currentID))
scrollPct := int(m.viewport.ScrollPercent() * 100)
headersHint := "H: full headers"
if m.showFullHeaders {
headersHint = "H: short headers"
}
status := statusBarStyle.Render(
fmt.Sprintf(" ↑↓/SPC/PgUp/Dn: scroll │ s: save EML │ %s │ q: back │ %d%% ", headersHint, scrollPct),
)
notice := ""
if m.saveNotice != "" {
notice = "\n" + saveNoticeStyle.Render(m.saveNotice)
}
return header + "\n" + m.viewport.View() + "\n" + status + notice
}
return ""
}
func (m Model) renderBottom() string {
if m.loadingDone < m.loadingTotal {
label := fmt.Sprintf(" Fetching subjects: %d / %d ", m.loadingDone, m.loadingTotal)
return dimStyle.Render(label) + "\n " + m.progress.View()
}
return statusBarStyle.Render(
fmt.Sprintf(" %d message(s) │ Enter: open │ r: refresh │ q: quit ", len(m.list.Items())),
)
}

63
msgs.go Normal file
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package main
import (
tea "github.com/charmbracelet/bubbletea"
)
// ── Tea message types ─────────────────────────────────────────────────────────
type queueParsedMsg struct{ entries []QueueEntry } // phase 1: structure only
type subjectFetchedMsg struct { // phase 2: one per entry
id string
subject string
}
type queueErrMsg struct{ err error }
type messageLoadedMsg struct {
id string
content string
}
type messageErrMsg struct{ err error }
type savedMsg struct{ path string }
type saveErrMsg struct{ err error }
// ── Tea commands ──────────────────────────────────────────────────────────────
func loadQueueCmd() tea.Cmd {
return func() tea.Msg {
entries, err := loadQueue()
if err != nil {
return queueErrMsg{err}
}
return queueParsedMsg{entries}
}
}
func fetchSubjectCmd(id string) tea.Cmd {
return func() tea.Msg {
raw, err := fetchHeaders(id)
if err != nil {
return subjectFetchedMsg{id: id, subject: "(error)"}
}
return subjectFetchedMsg{id: id, subject: extractSubject(raw)}
}
}
func loadMessageCmd(id string) tea.Cmd {
return func() tea.Msg {
content, err := fetchMessage(id)
if err != nil {
return messageErrMsg{err}
}
return messageLoadedMsg{id: id, content: content}
}
}
func saveCmd(id, content string) tea.Cmd {
return func() tea.Msg {
path, err := saveMessage(id, content)
if err != nil {
return saveErrMsg{err}
}
return savedMsg{path}
}
}

144
queue.go Normal file
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package main
import (
"bufio"
"fmt"
"os/exec"
"sort"
"strings"
"time"
)
type QueueEntry struct {
ID string
Size int
Date time.Time
Sender string
Subject string
Rcpts []string
Reason string
}
func loadQueue() ([]QueueEntry, error) {
out, err := exec.Command("postqueue", "-p").Output()
if err != nil {
return nil, fmt.Errorf("postqueue -p: %w", err)
}
entries := parsePostqueue(string(out))
sort.Slice(entries, func(i, j int) bool {
return entries[i].Date.After(entries[j].Date)
})
return entries, nil
}
// parsePostqueue parses the output of `postqueue -p`.
// Each message block is separated by a blank line.
// Format of first line of a block:
//
// QUEUEID[*!]? SIZE DOW MON DD HH:MM:SS SENDER
func parsePostqueue(output string) []QueueEntry {
var entries []QueueEntry
scanner := bufio.NewScanner(strings.NewReader(output))
// Skip header line
for scanner.Scan() {
if strings.HasPrefix(scanner.Text(), "-Queue ID-") {
break
}
}
var current *QueueEntry
for scanner.Scan() {
line := scanner.Text()
if line == "" {
if current != nil {
entries = append(entries, *current)
current = nil
}
continue
}
// Lines starting with a space are reason or recipient lines
if strings.HasPrefix(line, " ") || strings.HasPrefix(line, "\t") {
if current == nil {
continue
}
trimmed := strings.TrimSpace(line)
if strings.HasPrefix(trimmed, "(") {
current.Reason = strings.Trim(trimmed, "()")
} else if trimmed != "" {
current.Rcpts = append(current.Rcpts, trimmed)
}
continue
}
// Deferral/error reason line (not indented, starts with '(')
if strings.HasPrefix(line, "(") {
if current != nil {
current.Reason = strings.Trim(line, "()")
}
continue
}
// Skip summary line at the end (e.g. "-- 2 Kbytes in 1 Request.")
if strings.HasPrefix(line, "--") {
if current != nil {
entries = append(entries, *current)
current = nil
}
break
}
// New message block: parse the header line
entry := parseQueueLine(line)
if entry != nil {
current = entry
}
}
if current != nil {
entries = append(entries, *current)
}
return entries
}
// parseQueueLine parses a line like:
// ABC1234* 1234 Sun Mar 29 10:00:00 sender@example.com
func parseQueueLine(line string) *QueueEntry {
fields := strings.Fields(line)
// Minimum: ID, size, weekday, month, day, time, sender
if len(fields) < 7 {
return nil
}
id := fields[0]
// Strip trailing status character (* or !)
id = strings.TrimRight(id, "*!")
var size int
fmt.Sscanf(fields[1], "%d", &size)
// Date: fields[2] = weekday, [3] = month, [4] = day, [5] = HH:MM:SS
// Use current year as postqueue doesn't show year
dateStr := fmt.Sprintf("%s %s %s %s %d",
fields[2], fields[3], fields[4], fields[5], time.Now().Year())
t, err := time.Parse(time.ANSIC, dateStr)
if err != nil {
t = time.Time{}
}
sender := ""
if len(fields) >= 7 {
sender = fields[6]
}
return &QueueEntry{
ID: id,
Size: size,
Date: t,
Sender: sender,
}
}

15
styles.go Normal file
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package main
import "github.com/charmbracelet/lipgloss"
var (
titleStyle = lipgloss.NewStyle().Bold(true).Foreground(lipgloss.Color("33"))
selectedStyle = lipgloss.NewStyle().Bold(true).Foreground(lipgloss.Color("212"))
dimStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("240"))
statusBarStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("241")).Reverse(true).Padding(0, 1)
errorStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("196")).Bold(true)
saveNoticeStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("82"))
partSepStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("240"))
attachStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("214"))
headerKeyStyle = lipgloss.NewStyle().Bold(true)
)