X-Git-Url: https://git.madduck.net/etc/mutt.git/blobdiff_plain/a83d50d5a64488deb3796bbd0ca0a03b0516cc77..7013dfe93a05082153f79eca6c9e5c05b54d9d50:/.config/mutt/bgrun

diff --git a/.config/mutt/bgrun b/.config/mutt/bgrun
new file mode 100755
index 0000000..ad432df
--- /dev/null
+++ b/.config/mutt/bgrun
@@ -0,0 +1,180 @@
+#!/bin/sh
+
+#exec 2>> /tmp/bgrun.stderr
+#set -x
+
+SELF="${0##*/}"
+
+TEMPDIR=
+TEMPRUNDIR=.tempdir-run.d
+cleanup() {
+  if [ -d $TEMPRUNDIR ]; then
+    local TEMPDIR; TEMPDIR="$PWD"
+    notify_output
+    cd /
+    rm -rf "$TEMPDIR"
+  fi
+  trap - 1 2 3 4 5 6 7 8 10 11 12 13 14 15
+}
+trap cleanup 1 2 3 4 5 6 7 8 10 11 12 13 14 15
+
+enter_tempdir() {
+  if [ -d $TEMPRUNDIR ]; then
+    return
+
+  else
+    if [ -z "${TMPDIR:-}" ]; then
+      TMPDIR=/tmp
+    fi
+    for i in $LOGNAME volatile; do
+      if [ -d "${TMPDIR}/$i" ]; then
+        TMPDIR="${TMPDIR}/$i"
+        break
+      fi
+    done
+    cd $(mktemp -dp "$TMPDIR" mutt.XXXXXXXXXX)
+    mkdir $TEMPRUNDIR
+  fi
+}
+
+notify() {
+  if [ -x "$(command -v awesome-client)" ]; then
+    local stdout stderr escaped output
+    stdout="${2:-}"
+    stderr="${3:-}"
+    for i in stdout stderr; do
+      if eval test -s $TEMPRUNDIR/output.$i; then
+        escaped=$(eval sed -e 's,\",\\\",g' $TEMPRUNDIR/output.$i)
+        output="${output:+$output
+}${i}:
+$escaped"
+      fi
+    done
+    [ -n "${escaped:-}" ] || return
+    awesome-client <<-_eof
+	local naughty = require("naughty")
+	naughty.notify({ preset = naughty.config.presets.low,
+		title  = "${1:-Output from mutt/$SELF}",
+		text   = [[$output]]
+		})
+	_eof
+  fi
+}
+
+notify_output() {
+  [ -d $TEMPRUNDIR ] || return
+  local stdout stderr anything
+
+  for i in stdout stderr; do
+    if [ -s "$TEMPRUNDIR/output.$i" ]; then
+      eval $i="'$TEMPRUNDIR/output.$i'"
+    else
+      eval $i=/dev/null
+    fi
+  done
+
+  notify "Output from mutt/$SELF" $stdout $stderr
+}
+
+guess_extension() {
+  python3 -c "import mimetypes; print(mimetypes.guess_extension('$1'))"
+}
+
+get_file() {
+  local t
+  if [ -z "$1" ]; then
+    t=$(mktemp -p "$PWD" tmp.XXXXXXXXXX.$(guess_extension "$MIMETYPE"))
+    cat > "$t"
+    echo "$t"
+  else
+    t="$(echo ${1##*/} | sed -re 's![^[:alnum:],.@%^+=_-]!_!gi')"
+    ln "$1" "$t" 2>/dev/null || cp "$1" "$t"
+    echo "$t"
+  fi
+}
+
+MIMETYPE= FILENAME= VIEWER= DELAY=1
+state=
+for arg in "$@"; do
+  case "$state/$arg" in
+
+    (/-t) state=t;;
+    (t/*) MIMETYPE="$arg"; state=;;
+
+    (/-f) state=f;;
+    (f/*) FILENAME="$arg"; state=;;
+
+    (/-d) state=d;;
+    (d/*) DELAY="$arg"; state=;;
+
+    (/-v) state=v;;
+    (v/*) VIEWER="$arg"; state=;;
+
+    (*)
+      echo >&2 "E: Invalid argument: $i"
+      exit 1
+      ;;
+
+  esac
+done
+
+launch_viewer() {
+  local filename; filename="$1"
+  if [ -z "$VIEWER" ]; then
+    [ -n "${2:-}" ] && filename="${2}:${1}"
+    run-mailcap "$filename" > $TEMPRUNDIR/output.stdout 2> $TEMPRUNDIR/output.stderr
+  else
+    $VIEWER "$filename" > $TEMPRUNDIR/output.stdout 2> $TEMPRUNDIR/output.stderr
+  fi
+}
+
+case "$SELF" in
+  (bgview)
+    # make a copy of the file, then launch a shell process in the background
+    # to divert to run-mailcap, after which the temporary directory gets
+    # cleaned up.
+    enter_tempdir
+    FILE="$(get_file "$FILENAME")"
+    (
+      ts=$(($(date +%s) + $DELAY))
+      launch_viewer "$FILE" "$MIMETYPE"
+      while [ $(date +%s) -lt $ts ]; do sleep 1; done
+      cleanup
+    ) &
+    trap - 1 2 3 4 5 6 7 8 10 11 12 13 14 15
+    ;;
+  (bgview-fifo)
+    # hack to stay around until the viewer has read the file: make a fifo and
+    # wait for the cat process to finish writing to it, which means that it
+    # must have been consumed on the other end.
+    enter_tempdir
+    FILE="$(get_file "$FILENAME")"
+    FIFO="fifo-${FILE##*/}"
+    mkfifo "$FIFO"
+    cat "$FILE" > "$FIFO" &
+    # For some reason, we do have to write a tempfile and cannot seem to
+    # redirect stdin directly to the fifo, i.e. this does not work instead of
+    # the previous three lines:
+    ## cat > "$FIFO" &
+    launch_viewer "$FIFO" "$MIMETYPE"
+    wait
+    cleanup
+    ;;
+  (bgview-delay)
+    # hack to stay around until the file hasn't been accessed for a few
+    # seconds, so that we can clean up. This is for cases when the FIFO method
+    # doesn't work, because e.g. Firefox randomly chooses it needs to read
+    # HTML files twice.
+    enter_tempdir
+    FILE="$(get_file "$FILENAME")"
+    touch "$FILE"
+    (launch_viewer "$FILE" "$MIMETYPE") &
+    (
+      while [ $(($(stat -c%X "$FILE") + $DELAY)) -gt $(date +%s) ]; do
+        sleep 1
+      done
+      cleanup
+    ) &
+    trap - 1 2 3 4 5 6 7 8 10 11 12 13 14 15
+    ;;
+esac