snotes

#!/bin/bash

#----------------------------------------------------------------------------------
# Project Name      - miscellaneous/snotes (Search Notes)
# Started On        - Fri  9 Feb 00:07:19 GMT 2018
# Last Change       - Sun 11 Mar 08:54:42 GMT 2018
# Author E-Mail     - terminalforlife@yahoo.com
# Author GitHub     - https://github.com/terminalforlife
#----------------------------------------------------------------------------------
# To use your own comment character, change the COM variable. This feature will
# eventually be included into snotes properly.
#----------------------------------------------------------------------------------

_VERSION_="2018-03-11"

XERR(){ printf "[L%0.4d] ERROR: %s\n" "$1" "$2" 1>&2; exit 1; }
ERR(){ printf "[L%0.4d] ERROR: %s\n" "$1" "$2" 1>&2; }

COM="#"

USAGE(){
	while read -r; do
		printf "%s\n" "$REPLY"
	done <<-EOF
		            SNOTES - SEARCH NOTES ($_VERSION_)
		            Written by terminalforlife (terminalforlife@yahoo.com)

		            Search your programming notes on-the-fly with this simple tool.

		SYNTAX:     snotes [OPTS] MATCH

		OPTS:       --help|-h|-?            - Displays this help information.
		            --version|-v            - Output only the version datestamp.
		            --debug|-D              - Enables the built-in bash debugging.
		            --file|-f PATH          - Specify and remember the notes file to use.
		            --edit|-e CMD           - Open up the notes file with CMD for editing.
		                                      If no CMD is provided, the one saved in the
		                                      snotes configuration file will be used.

		NOTE:       Uses regular expressions for MATCH. Comment lines are ignored. To tell
		            snotes when you wish to stop searching for the MATCH, have a line in
		            the notes file which contains only:

		            When using --edit|-e for editing a file, the editor used will be the
		            one pointed to within the

		              ${COM}END
	EOF
}

while [ "$1" ]; do
	case "$1" in
		--help|-h|-\?)
			USAGE; exit 0 ;;
		--version|-v)
			printf "%s\n" "$_VERSION_"
			exit 0 ;;
		--debug|-D)
			DEBUGME="true" ;;
		--file|-f)
			shift; FILE="$1" ;;
		--edit|-e)
			shift; EDIT="$1" ;;
		-*)
			XERR "$LINENO" "Incorrect argument(s) specified." ;;
		*)
			break ;;
	esac

	shift
done

if [ "$2" ]; then
	XERR "$LINENO" "Argument error -- is your match correct?"
fi

[ "$DEBUGME" == "true" ] && set -x

SNOTESCHK(){
	if ! [ -f "$FILE" -a -r "$FILE" ]; then
		XERR "$LINENO" "Notes file inaccessible or not found."
	fi
}

if [ -f $HOME/.config/snotes.conf ]; then
	if [ "$FILE" ]; then
		SNOTESCHK
		read -n 1 -e -p "Notes file already exists -- replace? "
		if ! [[ "$REPLY" == [Yy] ]]; then
			printf "No action taken -- quitting.\n"
			exit 0
		else
			if ! [ -d $HOME/.config ]; then
				if [ -x /bin/mkdir ]; then
					/bin/mkdir $HOME/.config
				else
					XERR "$LINENO" "Dependency '/bin/mkdir' not met."
				fi
			fi

			printf "%q\n" "$FILE" > $HOME/.config/snotes.conf
		fi
	else
		FILE="$(< $HOME/.config/snotes.conf)"
	fi
else
	printf "$FILE\n" > $HOME/.config/snotes.conf
fi

SNOTESCHK
MATCH="$1"
declare -i LINE_COUNT=0
while read -r LINE; do
	LINE_COUNT+=1
	[ "$LINE" == "${COM}END" ] && break
	if [[ "$LINE" =~ ^(|${COM}.*)$ ]]; then
		continue
	elif [[ "$LINE" =~ $MATCH ]]; then
		if [ "$LINE_NUMBERS" == "true" ]; then
			printf "%4d  %s\n" "$LINE_COUNT" "$LINE"
		else
			printf "%s\n" "$LINE"
		fi
	fi
done < "$FILE"

# vim: noexpandtab colorcolumn=84 tabstop=8 noswapfile nobackup