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|
#! /bin/sh
# usage: parts list
# usage: parts add PATH [NAME [DESCRIPTION]]
set -efu
list_parts() {
jq -r '
def replicate(n; x):
if n == 0 then "" else n * x end
;
def flattenMap(inner):
def addDepth(depth):
if type == "array" then
map(addDepth(depth + 1))
else
{ depth: depth, value: . }
end
;
def addIndex:
to_entries | map(.value + { index: .key })
;
def getPrefix:
match("( *).*").captures[0].string
;
def stripPrefix:
match(" *(.*)").captures[0].string
;
def shiftPrefix:
match("( *[^ ]+)( *)( .*)").captures|map(.string)|.[1]+.[0]+.[2]
;
addDepth(0) | flatten | addIndex | map(inner) | map(shiftPrefix)
;
def parseContentType:
if . != null then . else "text/plain; charset=UTF-8" end |
split(";\\s*";"") |
(.[0] | split("/")) as $compoundType |
$compoundType[0] as $type |
$compoundType[1] as $subtype |
(.[1:] | map(split("=") | { key: .[0], value: .[1] }) | from_entries)
as $params |
{
$type, $subtype, $params,
}
;
def formatPart:
.body as $body |
((.headers // []) | from_entries) as $headers |
($headers["content-type"] | parseContentType) as $ct |
"\($ct.type)/\($ct.subtype)" as $compoundType |
$ct.params.name as $name |
[ "\($compoundType) \($name | tojson) \($body | length)" ] +
if $ct.type == "multipart" then .body | map(formatPart) else [] end
;
formatPart |
flattenMap("\(replicate(.depth - 1; " "))part#\(.index + 1) \(.value)")[]
'
}
add_part() {(
filepath=$1
filename=${2-$(basename "$filepath")}
description=${3-$filename}
contentType="$(file -Lib "$filepath"); name=$filename"
case $contentType in
text/plain|text/plain\;*)
contentTransferEncoding=8bit
content() {
cat "$filepath"
}
;;
*)
contentTransferEncoding=base64
content() {
base64 "$filepath"
}
;;
esac
contentDisposition="attachment; filename=$filename"
contentDescription=$description
boundary=$(date -Ins | sha1sum | cut -d\ -f1)
{
jq '{ mail: . }'
content | jq -Rs '{ content: . }'
} |
jq -sr \
--arg boundary "$boundary" \
--arg contentType "$contentType" \
--arg contentTransferEncoding "$contentTransferEncoding" \
--arg contentDisposition "$contentDisposition" \
--arg contentDescription "$contentDescription" \
'
add |
.mail as $mail |
.content as $content |
def parseContentType:
if . == null then null else
split(";\\s*";"") |
(.[0] | split("/")) as $type |
(.[1:] | map(split("=") | { key: .[0], value: .[1] }) | from_entries)
as $parameters |
{
type: $type[0],
subtype: $type[1],
parameters: $parameters,
}
end;
($mail.headers | from_entries) as $headers |
($headers["content-type"] | if . == null then
{
type: "text",
subtype: "plain",
parameters: {
charset: "UTF-8",
},
}
else parseContentType
end)
as $ct |
def add_part:
{
headers: ({
"content-type": $contentType,
"content-transfer-encoding": $contentTransferEncoding,
"content-disposition": $contentDisposition,
"content-description": $contentDescription,
} | to_entries),
body: $content,
}
as $part |
{ headers: .headers
, body: (.body + [$part])
};
($mail.headers | from_entries) as $headers |
def is_multipart_mixed:
$headers["content-type"] // "" | test("^multipart/mixed\\b.*");
if is_multipart_mixed then
$mail | add_part
else
{ headers: (
$mail.headers |
map(select(.key != "mime-version")) |
map(select(.key != "content-type")) |
map(select(.key != "content-transfer-encoding")) |
. + ({
"mime-version": "1.0",
"Content-Type": "multipart/mixed; boundary=\"----=\($boundary)\"",
} | to_entries)
)
, body: [{
headers: ({
"content-type":
($headers["content-type"] // "text/plain; charset=UTF-8"),
"content-transfer-encoding":
($headers["content-transfer-encoding"] // "8bit"),
} | to_entries),
body: $mail.body,
}]
} |
add_part
end
'
)}
command=$1; shift
case $command in
list)
mailaid | list_parts
;;
add)
mailaid | add_part "$@" | mailaid -d
;;
*)
echo "$0: error: unknown command: $command" >&2
exit 1
;;
esac
|
