aerc/lib/parse/hyperlinks.go
Koni Marti e1d8bc4d17 msgviewer: open http links from messages
Parse http links from a message and display them as completions in the
:open-link command.

Add the following binds to the [view] section in your binds.conf:
<C-l> = :open-link <space>

Parsing can be disabled in aerc.conf by setting parse-http-links to
false in the viewer section.

Thanks to Moritz for the help with the regular expression.

Signed-off-by: Koni Marti <koni.marti@gmail.com>
Reviewed-by: Moritz Poldrack <git@moritz.sh>
Acked-by: Robin Jarry <robin@jarry.cc>
2022-06-14 22:12:48 +02:00

45 lines
1 KiB
Go

package parse
import (
"bufio"
"bytes"
"io"
"regexp"
"strings"
)
var submatch = `(https?:\/\/[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,10}\b(?:[-a-zA-Z0-9()@:%_\+.~#?&\/=]*))`
var httpRe = regexp.MustCompile("\"" + submatch + "\"" + "|" + "\\(" + submatch + "\\)" + "|" + "<" + submatch + ">" + "|" + submatch)
// HttpLinks searches a reader for a http link and returns a copy of the
// reader and a slice with links.
func HttpLinks(r io.Reader) (io.Reader, []string) {
var buf bytes.Buffer
tr := io.TeeReader(r, &buf)
scanner := bufio.NewScanner(tr)
linkMap := make(map[string]struct{})
for scanner.Scan() {
line := scanner.Text()
if !strings.Contains(line, "http") {
continue
}
for _, word := range strings.Fields(line) {
if links := httpRe.FindStringSubmatch(word); len(links) > 0 {
for _, l := range links[1:] {
if l != "" {
linkMap[strings.TrimSpace(l)] = struct{}{}
}
}
}
}
}
results := []string{}
for link, _ := range linkMap {
results = append(results, link)
}
return &buf, results
}