Add d6

Signed-off-by: Nicolás Ortega Froysa <nicolas@ortegas.org>

d6

@@ -0,0 +1,118 @@
+#!/bin/bash
+# This is free and unencumbered software released into the public domain.
+#
+# Anyone is free to copy, modify, publish, use, compile, sell, or
+# distribute this software, either in source code form or as a compiled
+# binary, for any purpose, commercial or non-commercial, and by any
+# means.
+#
+# In jurisdictions that recognize copyright laws, the author or authors
+# of this software dedicate any and all copyright interest in the
+# software to the public domain. We make this dedication for the benefit
+# of the public at large and to the detriment of our heirs and
+# successors. We intend this dedication to be an overt act of
+# relinquishment in perpetuity of all present and future rights to this
+# software under copyright law.
+#
+# 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 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.
+#
+# For more information, please refer to <http://unlicense.org/>
+
+VERSION="1.0"
+
+function print_usage() {
+	echo "USAGE: d6 [OPTIONS]"
+}
+
+function print_help() {
+	print_usage
+	echo "OPTIONS:
+	-v          print program version
+	-h          print this help information
+	-n <num>    number of words in generated password (default 3)
+	-f <file>   custom dictionary file (default
+	            ~/.local/share/wordlist.txt)
+	-d <delim>  delimiter used between words (default \"\", i.e. NONE)
+	-c <case>   the case used for the generated words, can be: upper,
+	            lower, capital (default \"capital\")"
+}
+
+function test_case() {
+	if [ $1 != "lower" ] && [ $1 != "upper" ] && [ $1 != "capital" ]
+	then
+		return 1
+	else
+		return 0
+	fi
+}
+
+NUM_WORDS=3
+WORDLIST="$HOME/.local/share/wordlist.txt"
+DELIMITER=""
+CASE="capital"
+
+while getopts "vhn:f:d:c:" arg
+do
+	case $arg in
+		v)
+			echo "d6 v$VERSION"
+			exit 0;;
+		h)
+			print_help
+			exit 0;;
+		n)
+			NUM_WORDS=$OPTARG;;
+		f)
+			WORDLIST="$OPTARG";;
+		d)
+			DELIMITER="$OPTARG";;
+		c)
+			if test_case $OPTARG
+			then
+				CASE="$OPTARG"
+			else
+				echo "'$OPTARG' is an invalid case. Use 'capital', 'lower', or 'upper'."
+				exit 1
+			fi;;
+		?)
+			print_usage
+			exit 2
+	esac
+done
+
+WORDS=""
+
+for i in $(seq 1 $NUM_WORDS)
+do
+	ROLLS=""
+	for j in {1..5}
+	do
+		ROLLS="$((1 + $RANDOM % 6))$ROLLS"
+	done
+
+	if [ $CASE == "upper" ]
+	then
+		WORD="$(awk "/$ROLLS/{ print toupper(\$2) }" $WORDLIST)"
+	elif [ $CASE == "lower" ]
+	then
+		WORD="$(awk "/$ROLLS/{ print tolower(\$2) }" $WORDLIST)"
+	else
+		WORD="$(awk "/$ROLLS/{ print \$2 }" $WORDLIST)"
+		WORD="${WORD^}"
+	fi
+
+	if [ $i -eq $NUM_WORDS ]
+	then
+		WORDS="${WORDS}${WORD}"
+	else
+		WORDS="${WORDS}${WORD}${DELIMITER}"
+	fi
+done
+
+echo "$WORDS"