initial commit

bash/pangram/pangram.sh

@@ -0,0 +1,49 @@
+#!/usr/bin/env bash
+
+# set to mask to enable logs. 0: none, 255: all
+# (( debug=2#00001111 ))
+(( debug=2#00000000 ))
+
+# $1: log level (mask), then strings to display.
+debug () {
+    (( debug & "$1" )) && shift && echo "${@}" >&2
+}
+
+usage () {
+    echo "usage: ./pangram.sh <string> [...]" >&2
+    exit 1
+}
+
+# basic args checks: at least 1 arg
+(( $# )) || usage
+
+# We will accept mutiple args here: "a" "b" is equivalent to "ab".
+# get args in one string, change it to lower case.
+IFS=""                                                      # not really needed
+string="${*,,}"
+debug 1 "string=$string"
+
+# empty string
+if (( ! ${#string} )); then
+    debug 2 "empty string"
+    result=false
+else
+    result=true
+
+    # loop on all characters, from a to z. We need to check each one.
+    for c in {a..z} ; do
+        [[ ! ${string} =~ "$c" ]] && result=false && break
+    done
+fi
+
+echo "$result"
+exit 0
+
+# emacs/vim settings.
+# Local Variables:
+# sh-basic-offset: 4
+# indent-tabs-mode: nil
+# comment-column: 60
+# fill-column: 80
+# End:
+# vim: set tabstop=4 expandtab: