X-Git-Url: https://zdv2.bktei.com/gitweb/BK-2020-03.git/blobdiff_plain/849106f7246e47bc077d7f3b8228cec717a8e63d..26f0533782d8c57fb95b8df4f55057edcbf17703:/unitproc/bkt-checkFlt

diff --git a/unitproc/bkt-checkFlt b/unitproc/bkt-checkFlt
new file mode 100644
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+++ b/unitproc/bkt-checkFlt
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+#!/bin/bash
+# Desc: Checks if arg is a float
+
+#==BEGIN Define script parameters==
+#===BEGIN Declare local script functions===
+yell() { echo "$0: $*" >&2; } # print script path and all args to stderr
+die() { yell "$*"; exit 111; } # same as yell() but non-zero exit status
+try() { "$@" || die "cannot $*"; } # runs args as command, reports args if command fails
+checkFlt() {
+    # Desc: Checks if arg is a float
+    # Usage: checkFlt arg
+    # Input: arg: float
+    # Output: - return code 0 (if arg is float)
+    #         - return code 1 (if arg is not float)
+    # Example: if ! checkFlt $arg; then echo "not flt"; fi;
+    # Version: 0.0.2
+    # Depends: yell(), die(), bash 5.0.3
+    # Ref/Attrib: JDB https://stackoverflow.com/a/12643073 float regex
+    local returnState
+
+    #===Process Arg===
+    if [[ $# -ne 1 ]]; then
+	die "ERROR:Invalid number of arguments:$#";
+    fi;
+
+    RETEST1='^[+-]?([0-9]+([.][0-9]*)?|[.][0-9]+)$'; # Regular Expression to test
+    if [[ ! $1 =~ $RETEST1 ]] ; then
+	returnState="false";
+    else
+	returnState="true";
+    fi;
+
+    #===Determine function return code===
+    if [ "$returnState" = "true" ]; then
+	return 0;
+    else
+	return 1;
+    fi;
+} # Checks if arg is float
+
+#===END Declare local script functions===
+#==END Define script parameters==
+
+#==BEGIN test code==
+myVar1="4" ; echo "Test 1:Should succeed because int is float without decimal places or decimal.";
+(if checkFlt "$myVar1"; then yell "success"; else yell "fail"; fi;) & sleep 1;
+
+myVar1="4.0" ; echo "Test 2:Should succeed because \"4.0\" is a float.";
+(if checkFlt "$myVar1"; then yell "success"; else yell "fail"; fi;) & sleep 1;
+
+myVar1=".0" ; echo "Test 3:Should succeed even if float lack whole numbers left of decimal.";
+(if checkFlt "$myVar1"; then yell "success"; else yell "fail"; fi;) & sleep 1;
+
+myVar1="4." ; echo "Test 4:Should succeed even if float lacks decimal places right of decimal.";
+(if checkFlt "$myVar1"; then yell "success"; else yell "fail"; fi;) & sleep 1;
+
+myVar1="14.0" ; echo "Test 5:Should succeed with multiple whole numbers to left of decimal."
+(if checkFlt "$myVar1"; then yell "success"; else yell "fail"; fi;) & sleep 1;
+
+myVar1="." ; echo "Test 6:Should fail because neither whole numbers nor decimal places are present.";
+(if checkFlt "$myVar1"; then yell "success"; else yell "fail"; fi;) & sleep 1;
+
+myVar1="4"; myVar2="5"; echo "Test 7:Should fail because multiple numbers are provided.";
+(if checkFlt "$myVar1" "$myVar2"; then yell "success"; else yell "fail"; fi;) & sleep 1;
+
+myVar1="4 5"; echo "Test 8:Should fail because multiple numbers are provided.";
+(if checkFlt "$myVar1"; then yell "success"; else yell "fail"; fi;) & sleep 1;
+
+myVar1="4.4.4"; echo "Test 9:Should fail because a float should contain only one decimal.";
+(if checkFlt "$myVar1"; then yell "success"; else yell "fail"; fi;) & sleep 1;
+
+myVar1="foo"; echo "Test 10:Should fail because floats should only contain numbers and decimal characters."
+(if checkFlt "$myVar1"; then yell "success"; else yell "fail"; fi;) & sleep 1;
+
+myVar1="foo"; myVar2="bar"; myVar3="baz"; echo "Test 11: Should fail because multiple arguments provided.";
+(if checkFlt "$myVar1" "$myVar2" "$myVar3"; then yell "success"; else yell "fail"; fi;) & sleep 1;
+
+myVar1=""; echo "Test 12: Should fil because empty string.";
+(if checkFlt "$myVar1"; then yell "success"; else yell "fail"; fi;) & sleep 1;
+#==END test code==
+
+# Author: Steven Baltakatei Sandoval
+# License: GPLv3+