Allow packing multipart MIME

notes.sh

@@ -80,6 +80,16 @@ uuid()
     echo
 }
 
+gen_boundary()
+{
+	for (( N=0; N < 32; ++N ))
+	do
+		B=$(( RANDOM%255 ))
+		printf '%02x' $B
+	done
+	echo
+}
+
 yesno() {
 	PROMPT="$1"
 	DEFAULT="$2"
@@ -102,7 +112,7 @@ yesno() {
 }
 
 get_headers() {
-	FILE="$1"
+	HEADERS_FILE="$1"
 	
 	FILTER="\
 		{ \
@@ -110,11 +120,11 @@ get_headers() {
 		    print \$0 \
 		} \
 	"
-	awk "$FILTER" "$FILE"
+	awk "$FILTER" "$HEADERS_FILE"
 }
 
 get_body() {
-	FILE="$1"
+	BODY_FILE="$1"
 	
 	FILTER="\
 		{ \
@@ -122,7 +132,7 @@ get_body() {
 		    if (\$0~/^$/) {body=1} \
 		} \
 	"
-	awk "$FILTER" "$FILE" 
+	awk "$FILTER" "$BODY_FILE" 
 }
 get_header() {
 	FILE="$1"
@@ -230,16 +240,60 @@ unpack_mime() {
 	rm "$TMP"
 }
 
+pack_part() {
+	PART_FILE="$1"
+	CONTENT_TYPE="$(file -b --mime-type "$PART_FILE")"
+	echo "Content-Disposition: attachment; filename=\"$(basename "$PART_FILE")\""
+
+	if [[ "$CONTENT_TYPE" =~ "text/" ]]; then
+		echo "Content-Type: text/plain"
+		echo
+		cat "$PART_FILE"
+	else
+		echo "Content-Type: $CONTENT_TYPE"
+		echo "Content-Transfer-Encoding: base64"
+		echo
+		cat "$PART_FILE" | base64
+	fi
+}
+
 pack_mime() {
 	DIR="$1"
 	FILE="$2"
+	FILE_COUNT="$(ls "$DIR" | wc -l)"
+
+	if [[ "$FILE_COUNT" == "1" ]]; then
 		{
 			echo "MIME-Version: 1.0"
 			echo "Content-Type: text/plain; charset=utf-8"
 			echo "Content-Disposition: inline"
 			cat "$DIR/note.md"
 		} >> "$FILE"
+		return
+	fi
 
+	BOUNDARY="$(gen_boundary)"
+	{
+		echo "MIME-Version: 1.0"
+		echo "Content-Type: multipart/mixed; boundary=$BOUNDARY"
+		get_headers "$DIR/note.md"
+		echo
+		echo "--$BOUNDARY"
+		echo "Content-Type: text/plain; charset=utf-8"
+		echo "Content-Disposition: inline"
+		echo
+		get_body "$DIR/note.md"
+	} >> "$FILE"
+
+
+	find "$DIR/" -type f ! -name 'note.md' | while read FN
+	do
+		{
+			echo "--$BOUNDARY"
+			pack_part "$FN"
+		} >> "$FILE"
+	done	
+	echo "--$BOUNDARY--" >> "$FILE"
 }
 
 new_entry() {

test.sh

@@ -205,6 +205,50 @@ resume_editing() {
 	assert 'echo "$OUTPUT" | grep -o myline3' "myline3"
 }
 
+pack_multipart() {
+	mkdir "$TMP/inpdir"
+	cat > "$TMP/inpdir/note.md" <<- EOF
+		Subject: This is a header
+
+		This is a body
+	EOF
+
+	cat > "$TMP/inpdir/file.txt" <<- EOF
+		This is a text attachment
+	EOF
+
+	"$BASE_DIR/notes.sh" -n "$TMP/inpdir"
+	OUTPUT="$(cat "$(pwd)/notes/cur"/*)"
+	
+	assert 'echo "$OUTPUT" | grep Subject' "Subject: This is a header"
+	assert 'echo "$OUTPUT" | grep -o "text attachment"' "text attachment"
+	BOUNDARY="$(cat "$(pwd)/notes/cur"/* | grep boundary= | cut -d '=' -f 2)"
+	#echo "boundary: $BOUNDARY"
+
+	OUTPUT="$(echo "$OUTPUT" | sed "s/$BOUNDARY/boundary/g")"
+	OUTPUT="$(echo "$OUTPUT" | grep -v "Date" | grep -v "X-Note-Id")"
+	
+	read -d '' -r EXPECTED <<- EOF || true
+		MIME-Version: 1.0
+		Content-Type: multipart/mixed; boundary=boundary
+		Subject: This is a header
+		
+		--boundary
+		Content-Type: text/plain; charset=utf-8
+		Content-Disposition: inline
+		
+		This is a body
+		--boundary
+		Content-Disposition: attachment; filename="file.txt"
+		Content-Type: text/plain
+		
+		This is a text attachment
+		--boundary--
+	EOF
+
+	assert 'echo "$OUTPUT"' "$EXPECTED"
+}
+
 testcase new_note_from_stdin
 testcase new_note_from_file
 testcase new_note_from_dir
@@ -212,6 +256,7 @@ testcase list_notes
 testcase export_note
 testcase edit_note
 testcase resume_editing
+testcase pack_multipart
 
 if [[ "$RESULT" == "0" ]]; then
 	echo "All tests passed."