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#!/bin/bash
NC='\033[0m'
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[0;33m'
BROWSER=`which firefox-bin`
BOOKMARKS=$HOME/.local/share/misc/bookmarks
HISTORY=$HOME/.cache/omnibar_hist.txt
ENGINE="https://search.dyamon.me/search?q=%s"
#URL_PATTERN='^(https?://)?([A-Za-z0-9-]+\.)+[A-Za-z0-9-]+(:[0-9]+)?(/[A-Za-z0-9%#.=-]*)*(\?([A-Za-z0-9-]+(=[A-Za-z0-9-]+)?&?)+)?$'
URL_PATTERN='^(https?://)?([A-Za-z0-9-]+\.)+[A-Za-z0-9-]+(:[0-9]+)?(/.*)?'
msg_info() {
echo -e "${GREEN}[INFO] $1${NC}"
}
msg_warn() {
echo -e "${YELLOW}[WARN] $1${NC}"
}
msg_error() {
echo -e "${RED}[ERROR] $1${NC}"
}
print_help() {
echo
echo "dmenu_omnibar - a poor man's omnibar and bookmark manager (using dmenu)"
echo
echo "USAGE:"
echo " dmenu_omnibar -h|--help"
echo " dmenu_omnibar [-b|--browser <path>] [-B|--bookmarks <path>] [-s|--search-engine <url>]"
echo
echo "where:"
echo " -h | --help:"
echo " prints this help message."
echo " -b | --browser <path>"
echo " path to the executable used to open the selected link."
echo " -B | --bookmarks <path>"
echo " path to a file containing a list of bookmarks and"
echo " omnibar commands. See FORMAT below."
echo " -s | --search-engine <url>"
echo " default URL used when the input does not match any other"
echo " bookmark, URL or omnibar command. It should contain the"
echo " placeholder \"%s\" to be substituted with the query"
echo " provided by dmenu."
echo
echo "DMENU"
echo " dmenu will prompt for a bookmark from the provided list."
echo " If a match is found, the URL is selected. If a match is"
echo " not found the input is interpreted as follows:"
echo " 1) as an URL if the provided input is an URL;"
echo " 2) as a command if the input starts with \":\". Anything"
echo " following the command is interpreted as a query;"
echo " 3) as a query to be submitted to the default search engine."
echo
echo " Note: sometimes an input partially matches an entry in the"
echo " bookmarks when you are aiming to one of the other behaviours"
echo " (e.g., opening an URL directly). You can submit only the"
echo " input text (without autoselection from the list of bookmarks)"
echo " with Shift-Enter."
echo
echo "COMMAND HISTORY"
echo " Rudimental support for command history is provided. Up to"
echo " 10 unique entries will appear at the top of the dmenu"
echo " selection list."
echo
echo " The following internal commands are also supported:"
echo " !clear clears the command history"
echo
echo " Prepending your dmenu entry with one or more whitespaces"
echo " (space or tab) disables saving the entry to history."
echo
echo "BOOKMARK FORMAT"
echo " The bookmarks file is assumed to have the following syntax."
echo
echo " Lines containing a simple bookmark start with a sequence of"
echo " keywords, separated by one or more spaces, followed by the"
echo " URL of the bookmark."
echo
echo " Lines containing omnibar commands start with a command"
echo " with a leading colon (e.g., \":s\", \":yt\") followed by"
echo " the URL containing the placeholder \"%s\" that will be"
echo " substituted with the provided query."
echo
}
# Simple URL encoder
# The conversions are performed according to these tables
#
# https://docs.microfocus.com/OMi/10.62/Content/OMi/ExtGuide/ExtApps/URL_encoding.htm
# https://en.wikipedia.org/wiki/Percent-encoding#Reserved_characters
#
# Consider using something like this:
#
# https://gist.github.com/cdown/1163649
#
# for a more reliable approach.
urlencode() {
sed 's|+|%2b|g' | sed 's|/|%2f|g'
}
# Manage history
save_to_history() {
# File might not exist
touch "$HISTORY"
# Add new entry at the top
echo "🔍 $1" | cat - "$HISTORY" > "$HISTORY.tmp"
# Remove duplicates and truncate file to 10 entries
uniq "$HISTORY.tmp" | sed 11q > "$HISTORY"
}
clear_history() {
shred -u "$HISTORY" "$HISTORY.tmp"
}
omnisearch() {
[[ "$1" =~ ^[[:blank:]]+ ]] && anon=true || anon=false
# Clean input
input=$(echo -n "$1" | sed 's/^\s*//' | sed 's/^🔍\s*//' | sed 's/📋 \(primary\|clipboard\)\s*//')
# Process input
if [[ "$input" == "!clear" ]]
then
clear_history
elif grep -qs "^$input$" "$BOOKMARKS"
then
# Bookmark
echo "$input" | awk '{ print $(NF) }'
elif [[ "$input" =~ $URL_PATTERN ]]
then
# URL
echo "$input"
$anon || save_to_history "$input"
elif [[ "$input" =~ :[a-z]+\ .* ]]
then
# Omnisearch command
CMD=$(echo "$input" | cut -s -d' ' -f1 -)
SEARCH=$(echo "$input" | cut -s --complement -d' ' -f1 - | urlencode)
# NOTE: the space after `$CMD` in the following `grep` is
# important to avoid multiple matches when having one command
# being a leading substring of another.
URL=$(grep "$CMD " "$BOOKMARKS" | awk '{ print $(NF) }' | sed "s/%s/$SEARCH/g")
echo "$URL"
$anon || save_to_history "$input"
else
# Default search query
SEARCH=$(echo "$input" | urlencode)
echo "$ENGINE" | sed "s/%s/$SEARCH/g"
$anon || save_to_history "$input"
fi
}
while [[ $# -gt 0 ]]; do
arg="$1"
case $arg in
-h|--help)
print_help
exit 0
;;
-b|--browser)
if [[ $# -ge 2 ]]; then
BROWSER=$2
shift ; shift
else
msg_error "No value found for flag $arg!"
print_help
exit 2
fi
;;
-B|--bookmarks)
if [[ $# -ge 2 ]]; then
BOOKMARKS=$2
shift ; shift
else
msg_error "No value found for flag $arg!"
print_help
exit 3
fi
;;
-s|--search-engine)
if [[ $# -ge 2 ]]; then
ENGINE="$2"
shift ; shift
else
msg_error "No value found for flag $arg!"
print_help
exit 4
fi
;;
*)
msg_error "$arg is not a valid flag!"
print_help
exit 1
;;
esac
done
OPTIONS=""
# Primary selection
PRIMARY=$(xclip -out -selection primary 2>/dev/null | tr -d '\n')
[ -n "$PRIMARY" ] && \
[[ "$PRIMARY" =~ $URL_PATTERN ]] && \
OPTIONS="📋 primary $PRIMARY\\n"
# Clipboard selection
CLIPBOARD=$(xclip -out -selection clipboard 2>/dev/null | tr -d '\n')
[ -n "$CLIPBOARD" ] && \
[[ "$CLIPBOARD" =~ $URL_PATTERN ]] && \
OPTIONS="${OPTIONS}📋 clipboard $CLIPBOARD\\n"
OPTIONS=$(cat "$HISTORY" ; echo -ne "$OPTIONS" ; grep -v ^: "$BOOKMARKS")
URL=$(echo "$OPTIONS" | dmenu -l 18 -h 23)
[ -z "$URL" ] && exit 0 || OMNIURL=$(omnisearch "$URL")
# Starts browser in background
[ -z "$OMNIURL" ] || "$BROWSER" "$OMNIURL" &
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