Merge branch 'dwltags-script'

examples/scripts/dwl-tags.sh

@@ -0,0 +1,153 @@
+#!/usr/bin/env bash
+#
+# dwl-tags.sh - display dwl tags
+#
+# USAGE: dwl-tags.sh 1
+#
+# REQUIREMENTS:
+#  - inotifywait ( 'inotify-tools' on arch )
+#  - 2021/02/25 - dwl pull request:
+#    'Interface to display tag information on status bar #91'
+#    https://github.com/djpohly/dwl/pull/91
+#
+# TAGS:
+#  Name              Type    Return
+#  ----------------------------------------------------
+#  {tag_N}           string  dwl tags name
+#  {tag_N_occupied}  bool    dwl tags state occupied
+#  {tag_N_focused}   bool    dwl tags state focused
+#  {layout}          string  dwl layout
+#  {title}           string  client title
+#
+# Now the fun part
+#
+# Exemple configuration:
+#
+#     - script:
+#         path: /absolute/path/to/dwl-tags.sh
+#         args: [1]
+#         anchors:
+#           - occupied: &occupied {foreground: 57bbf4ff}
+#           - focused: &focused {foreground: fc65b0ff}
+#           - default: &default {foreground: d2ccd6ff}
+#         content:
+#           - map:
+#               margin: 4
+#               tag: tag_0_occupied
+#               values:
+#                 true:
+#                   map:
+#                     tag: tag_0_focused
+#                     values:
+#                       true: {string: {text: "{tag_0}", <<: *focused}}
+#                       false: {string: {text: "{tag_0}", <<: *occupied}}
+#                 false:
+#                   map:
+#                     tag: tag_0_focused
+#                     values:
+#                       true: {string: {text: "{tag_0}", <<: *focused}}
+#                       false: {string: {text: "{tag_0}", <<: *default}}
+#           ...
+#           ... 
+#           ...
+#           - map:
+#               margin: 4
+#               tag: tag_8_occupied
+#               values:
+#                 true:
+#                   map:
+#                     tag: tag_8_focused
+#                     values:
+#                       true: {string: {text: "{tag_8}", <<: *focused}}
+#                       false: {string: {text: "{tag_8}", <<: *occupied}}
+#                 false:
+#                   map:
+#                     tag: tag_8_focused
+#                     values:
+#                       true: {string: {text: "{tag_8}", <<: *focused}}
+#                       false: {string: {text: "{tag_8}", <<: *default}}
+#           - list:
+#               spacing: 3
+#               items:
+#                   - string: {text: "{layout}"}
+#                   - string: {text: "{title}"}
+
+
+# Variables
+declare titleline tagline title taginfo isactive ctags mtags layout
+declare -a tags name
+readonly fname=/tmp/dwltags-"$WAYLAND_DISPLAY"
+
+
+_cycle() {
+  tags=( "1" "2" "3" "4" "5" "6" "7" "8" "9" )
+
+  # Name of tag (optional)
+  # If there is no name, number are used
+  #
+  # Example:
+  #  name=( "" "" "" "Media" )
+  #  -> return "" "" "" "Media" 5 6 7 8 9)
+  name=()
+
+  for tag in "${!tags[@]}"; do
+    mask=$((1<<tag))
+
+    tag_name="tag"
+    declare "${tag_name}_${tag}"
+    name[tag]="${name[tag]:-${tags[tag]}}"
+
+    printf -- '%s\n' "${tag_name}_${tag}|string|${name[tag]}"
+
+    # Occupied
+    if (( "${ctags}" & mask )); then
+      printf -- '%s\n' "${tag_name}_${tag}_occupied|bool|true"
+    else
+      printf -- '%s\n' "${tag_name}_${tag}_occupied|bool|false"
+    fi
+
+    # Focused
+    if (( "${mtags}" & mask )); then
+      printf -- '%s\n' "${tag_name}_${tag}_focused|bool|true"
+      printf -- '%s\n' "title|string|${title}"
+    else
+      printf -- '%s\n' "${tag_name}_${tag}_focused|bool|false"
+    fi
+
+  done
+
+  printf -- '%s\n' "layout|string|${layout}"
+  printf -- '%s\n' ""
+
+}
+
+# Call the function here so the tags are displayed at dwl launch
+_cycle
+
+while true; do
+
+  # Make sure the file exists
+  while [ ! -f "${fname}" ]; do
+    inotifywait -qqe create "$(dirname "${fname}")"
+  done;
+
+  # Wait for dwl to close it after writing
+  inotifywait -qqe close_write "${fname}"
+
+  # Get info from the file
+  titleline="$1"
+  tagline=$((titleline+1))
+  title=$(sed "${titleline}!d" "${fname}")
+  taginfo=$(sed "${tagline}!d" "${fname}")
+  isactive=$(printf -- '%s\n' "${taginfo}" | cut -d ' ' -f 1)
+  ctags=$(printf -- '%s\n' "${taginfo}" | cut -d ' ' -f 2)
+  mtags=$(printf -- '%s\n' "${taginfo}" | cut -d ' ' -f 3)
+  layout=$(printf -- '%s\n' "${taginfo}" | cut -d ' ' -f 4-)
+
+  _cycle
+
+done
+
+unset -v titleline tagline title taginfo isactive ctags mtags layout 
+unset -v tags name
+