feat: inline attachment support

src/sh/attachment.sh

@@ -0,0 +1,178 @@
+# Add attachment to iCalendar file
+#
+# @input $1: Path to iCalendar file
+__add_attachment() {
+  file="$1"
+  shift
+  sel=$(
+    $FZF --prompt="Select attachment> " \
+      --walker="file,hidden" \
+      --walker-root="$HOME" \
+      --expect="ctrl-c,ctrl-g,ctrl-q,esc"
+  )
+  key=$(echo "$sel" | head -1)
+  f=$(echo "$sel" | tail -1)
+  if [ -n "$key" ]; then
+    f=""
+  fi
+  if [ -z "$f" ] || [ ! -f "$f" ]; then
+    return
+  fi
+  filename=$(basename "$f")
+  mime=$(file -b -i "$f" | cut -d ';' -f 1)
+  if [ -z "$mime" ]; then
+    mime="application/octet-stream"
+  fi
+  fenc=$(mktemp)
+  base64 "$f" >"$fenc"
+  filetmp=$(mktemp)
+  awk -v file="$fenc" -v mime="$mime" -v filename="$filename" "$AWK_ATTACH" "$file" >"$filetmp"
+  mv "$filetmp" "$file"
+  if [ -n "${GIT:-}" ]; then
+    $GIT add "$file"
+    $GIT commit -q -m "Added attachment" -- "$file"
+  fi
+  rm "$fenc"
+}
+
+# Open attachment from iCalendar file
+#
+# @input $1: Attachment id
+# @input $2: Attachment name
+# @input $3: Attachment format
+# @input $4: Attachment encoding
+# @input $5: Path to iCalendar file
+__open_attachment() {
+  attid="$1"
+  shift
+  attname="$1"
+  shift
+  attfmt="$1"
+  shift
+  attenc="$1"
+  shift
+  file="$1"
+  shift
+  if [ "$attenc" != "base64" ]; then
+    err "Unsupported attachment encoding: $attenc. Press <enter> to continue."
+    read -r tmp
+    return
+  fi
+  if [ -n "$attname" ]; then
+    tmpdir=$(mktemp -d)
+    attpath="$tmpdir/$attname"
+  elif [ -n "$attfmt" ]; then
+    attext=$(echo "$attfmt" | cut -d "/" -f 2)
+    attpath=$(mktemp --suffix="$attext")
+  else
+    attpath=$(mktemp)
+  fi
+  # Get file and decode
+  awk -v id="$attid" "$AWK_ATTACHDD" "$file" | base64 -d >"$attpath"
+  fn=$(file "$attpath")
+  while true; do
+    printf "Are you sure you want to open \"%s\"? (yes/no): " "$fn" >/dev/tty
+    read -r yn
+    case $yn in
+    "yes")
+      $OPEN "$attpath"
+      printf "Press <enter> to continue." >/dev/tty
+      read -r tmp
+      break
+      ;;
+    "no")
+      break
+      ;;
+    *)
+      echo "Please answer \"yes\" or \"no\"." >/dev/tty
+      ;;
+    esac
+  done
+  # Clean up
+  rm -f "$attpath"
+  if [ -n "${tmpdir:-}" ] && [ -d "${tmpdir:-}" ]; then
+    rm -rf "$tmpdir"
+  fi
+}
+
+# Delete attachment from iCalendar file
+#
+# @input $1: Attachment id
+# @input $2: Path to iCalendar File
+__del_attachment() {
+  attid="$1"
+  shift
+  file="$1"
+  shift
+  while true; do
+    printf "Are you sure you want to delete attachment \"%s\"? (yes/no): " "$attid" >/dev/tty
+    read -r yn
+    case $yn in
+    "yes")
+      filetmp=$(mktemp)
+      awk -v id="$attid" "$AWK_ATTACHRM" "$file" >"$filetmp"
+      mv "$filetmp" "$file"
+      if [ -n "${GIT:-}" ]; then
+        $GIT add "$file"
+        $GIT commit -q -m "Deleted attachment" -- "$file"
+      fi
+      break
+      ;;
+    "no")
+      break
+      ;;
+    *)
+      echo "Please answer \"yes\" or \"no\"." >/dev/tty
+      ;;
+    esac
+  done
+}
+
+# Show attachment window
+#
+# @input $1: Path to iCalendar file
+__attachment_view() {
+  file="$1"
+  shift
+  att=$(
+    awk "$AWK_ATTACHLS" "$file" |
+      $FZF \
+        --delimiter="\t" \
+        --accept-nth=1,2,3,4 \
+        --with-nth="Attachment {1}: \"{2}\" {3} ({5})" \
+        --no-sort \
+        --tac \
+        --margin="30%,30%" \
+        --border=bold \
+        --border-label="Attachment View     Keys: <enter> open, <ctrl-alt-d> delete, <ctrl-a> add" \
+        --expect="ctrl-a" \
+        --expect="ctrl-c,ctrl-g,ctrl-q,ctrl-d,esc,q,backspace" \
+        --print-query \
+        --bind="start:hide-input" \
+        --bind="ctrl-alt-d:show-input+change-query(ctrl-alt-d)+accept" \
+        --bind='load:transform:[ "$FZF_TOTAL_COUNT" -eq 0 ] && echo "unbind(enter)+unbind(ctrl-alt-d)"' \
+        --bind="w:toggle-wrap" \
+        --bind="j:down" \
+        --bind="k:up" ||
+      true
+  )
+  key=$(echo "$att" | head -2 | xargs)
+  sel=$(echo "$att" | tail -1)
+  attid=$(echo "$sel" | cut -f 1)
+  attname=$(echo "$sel" | cut -f 2)
+  attfmt=$(echo "$sel" | cut -f 3)
+  attenc=$(echo "$sel" | cut -f 4)
+  case "$key" in
+  "ctrl-c" | "ctrl-g" | "ctrl-q" | "ctrl-d" | "esc" | "q" | "backspace") ;;
+  "ctrl-alt-d")
+    __del_attachment "$attid" "$file"
+    ;;
+  "ctrl-a")
+    __add_attachment "$file"
+    ;;
+  *)
+    __open_attachment "$attid" "$attname" "$attfmt" "$attenc" "$file"
+    ;;
+  esac
+  #
+}

src/sh/awkscripts.sh

@@ -39,3 +39,31 @@ AWK_UPDATE=$(
 EOF
 )
 export AWK_UPDATE
+
+AWK_ATTACH=$(
+  cat <<'EOF'
+@@include awk/attach.awk
+EOF
+)
+export AWK_ATTACH
+
+AWK_ATTACHDD=$(
+  cat <<'EOF'
+@@include awk/attachdd.awk
+EOF
+)
+export AWK_ATTACHDD
+
+AWK_ATTACHLS=$(
+  cat <<'EOF'
+@@include awk/attachls.awk
+EOF
+)
+export AWK_ATTACHLS
+
+AWK_ATTACHRM=$(
+  cat <<'EOF'
+@@include awk/attachrm.awk
+EOF
+)
+export AWK_ATTACHRM

src/sh/config.sh

@@ -43,3 +43,5 @@ if command -v "git" >/dev/null && [ -d "$ROOT/.git" ]; then
   GIT="git -C $ROOT"
   export GIT
 fi
+
+export OPEN=${OPEN:-open}

src/sh/theme.sh

@@ -11,6 +11,7 @@ export FLAG_COMPLETED="${FLAG_COMPLETED:-✅}"
 export FLAG_JOURNAL="${FLAG_JOURNAL:-📘}"
 export FLAG_NOTE="${FLAG_NOTE:-🗒️}"
 export FLAG_PRIORITY="${FLAG_PRIORITY:-❗}"
+export FLAG_ATTACHMENT="${FLAG_ATTACHMENT:-🔗}"
 
 # Style
 export STYLE_COLLECTION="${STYLE_COLLECTION:-$FAINT$WHITE}"