qutebrowser: add live-reload userscript

1 files changed, 123 insertions, 0 deletions

diff --git a/local/share/qutebrowser/userscripts/qutebrowser-live-reload.sh b/local/share/qutebrowser/userscripts/qutebrowser-live-reload.sh
new file mode 100755
index 0000000..08eabb4
--- /dev/null
+++ b/local/share/qutebrowser/userscripts/qutebrowser-live-reload.sh
@@ -0,0 +1,123 @@
+#!/bin/sh
+
+######
+#
+# The MIT License (MIT)
+# 
+# Copyright (c) 2021 Austin Lowery
+# Copyright (c) 2026 Florian Fischer
+# 
+# Permission is hereby granted, free of charge, to any person obtaining a copy of
+# this software and associated documentation files (the "Software"), to deal in
+# the Software without restriction, including without limitation the rights to
+# use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+# the Software, and to permit persons to whom the Software is furnished to do so,
+# subject to the following conditions:
+# 
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+# FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+# COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+# IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+######
+
+######
+#
+# Qutebrowser Live Reload UserScript
+#
+# Dependencies: Qutebrowser, inotify-tools
+# 
+# Purpose: 
+#     Enables a user to live reload any webpage when a file is added,
+#     removed, or modified within a directory on their local filesystem.
+#     Standard application would be for a web developer who is editing a website
+#     that is being served from his/her local computer. Atypical use might be to
+#     reload an arbitrary webpage in Qutebrowser based on some filesystem event on
+#     the local computer.
+# 
+# Intended for use on Linux. Specifically created and tested on Ubuntu 20.10.
+# 
+# This is a BASH script as opposed to a sh script due to entr's requirement to
+# to have locally defined functions exported before it can exec them.
+#
+# Be Aware:
+#     Qutebrowser doesn't provide a way to kill a userscript from the browser
+#     that I am aware of. This means that you'll need to close Qutebrowser 
+#     in order to stop this script. It is possible to have multiple of this script
+#     running at the same time if you haven't stopped Qutebrowser in between new
+#     invocations of the script.
+#
+######
+
+######
+#
+# INSTALLATION
+#
+# 1. Install the depenencies listed above 
+#     (Typically entr is the only one you may not already have)
+#
+# 2. Copy this script to: 
+#     ~/.local/share/qutebrowser/userscripts/qutebrowser-live-reload.sh
+#
+# 3. Make it executable with:
+#     chmod +x ~/.local/share/qutebrowser/userscripts/qutebrowser-live-reload.sh
+#
+# 4. Optionally edit this script below to hard code a custom $QLRUWATCHDIR
+#    which is the directory that holds the codebase that you're editing.
+#
+# 5. Optionally bind this script to a shorcut with the following steps:
+#     a. Open Qutebrowser
+#     b. Open the command prompt with: 
+#        SHIFT + :
+#     c. Paste in the following: 
+#        bind <Ctrl+Shift+r> spawn --userscript -v -m qutebrowser-live-reload.sh
+#          Note: You may optionally pass in the path to your codebase at the 
+#          end of the above bind command.
+#     d. Press Enter to bind the the shorcut to the command
+#
+######
+
+######
+#
+# USAGE
+#
+# 1. Open your locally hosted site in qutebrowser
+# 2. If you configured the shorcut from step 5 above, use that to start the script
+# 3. Or press: SHIFT + : and enter the following command:
+#    spawn --userscript -v -m qutebrowser-live-reload.sh [ /path/to/your/codebase ]
+# 4. Now that the script is running, your site will automatically reload on any edit
+#
+######
+
+# This whole QUTE_COUNT business below has to happen because I have not found
+# a way to identify the currently focused tab ID in qutebrowser from userscripts.
+# If the target browser tab is not specified by the user through QUTE_COUNT, 
+# I just use :tab-move without an argument to move the currently focused tab to 
+# the 0 position so that I know which tab I'm working with.
+if [ -z "$QUTE_COUNT" ]; then
+        echo ":tab-move" > "$QUTE_FIFO"
+        QUTE_COUNT=0
+        echo ":message-info 'Custom tab not specified. Moving this tab to position 0.'" > "$QUTE_FIFO"
+fi
+
+if [ -z "$1" ];then
+        QLRUWATCHDIR="$(printf '%s' "$QUTE_URL" | tail -c +8)"
+else
+        QLRUWATCHDIR="$1"
+        # Remember that the quotes on $1 would prevent ~ from being expanded if it
+        # were passed to the script in an unexpanded state.
+fi
+
+reportAndReload () {
+        echo ":message-info 'Reloading. '$1' changed'" > "$QUTE_FIFO"
+        echo ":reload -f" > "$QUTE_FIFO"
+}
+
+inotifywait -q --monitor --event=close_write --format='%w' "$QLRUWATCHDIR" | while read -r file; do
+   reportAndReload "$file"
+done