initial commit

bash/acronym/acronym.sh

@@ -0,0 +1,58 @@
+#!/usr/bin/env bash
+# V1: original version
+# V2: final printf changeto avoid subshell
+
+# external tools: none
+
+# v1: initial version
+
+# set to mask to enable logs
+debug=0
+
+shopt -s extglob
+
+usage()  {
+    echo "acronym.sh word1 [...]" >&2
+    exit 1
+}
+
+# $1: log level, then strings to display.
+log () {
+    (( debug & $1 )) && shift && echo "${@}"
+}
+
+
+# check for basic errors. We will accept multiple args:
+# acronym.sh i love suchi = acronym "i love suchi"
+(( $# < 1 )) && usage
+
+# valid word separators
+VALID_SEPARATORS="-_*"
+
+# replace valid chars with space, merge args in 1 string
+words="${*//[$VALID_SEPARATORS]/ }"
+log 1 valid separators ${#words[@]} "$words"
+
+# remove remaining non alpha chars (keep blanks)
+words="${words//[^[:alpha:][:blank:]]/}"
+log 1 keep alpha "${words[@]}"
+
+# capitalize, make an array
+words=(${words^^})
+log 1 "words ${#words[@]} ${words[@]}"
+
+# print 1st chars
+printf -v result "%c" ${words[@]}
+log 1 result "$result"
+
+echo "$result"
+
+exit 0
+
+# Indent style for emacs
+# Local Variables:
+# sh-basic-offset: 4
+# sh-indentation: 4
+# indent-tabs-mode: nil
+# comment-column: 60
+# End: