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POShell Function to add elements to array not working when placed inside another function
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  1. POShell Function to add elements to array not working when placed inside another function
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    copied!<p>I wrote a simple array in KSH 88 and did the following:</p> <pre><code># Vector methods set -A ZeroFilesArr GlobalIndex=-1 # Add element at the end function ZeroFilesArr.push_back { let GlobalIndex=$(($GlobalIndex + 1)) ZeroFilesArr[$GlobalIndex]=$1 return } # Return size function ZeroFilesArr.size { echo ${#ZeroFilesArr[@]} } # Clear content function ZeroFilesArr.clear { set -A ZeroFilesArr let GlobalIndex=$((-1)) } # Print contents in format # Var1 \t Var2 \t ... \t Var_n function ZeroFilesArr.print { local tempString for i in ${ZeroFilesArr[@]} do tempString="$tempString $i \t " done echo $tempString } </code></pre> <p>I tested afterwards using the following:</p> <pre><code>ZeroFilesArr.push_back File1 ZeroFilesArr.push_back File2 ZeroFilesArr.push_back File3 echo $(ZeroFilesArr.size) ZeroFilesArr.print ZeroFilesArr.clear echo $(ZeroFilesArr.size) ZeroFilesArr.push_back File1 ZeroFilesArr.push_back File2 echo $(ZeroFilesArr.size) ZeroFilesArr.print ZeroFilesArr.clear </code></pre> <p>The output is the following</p> <p><strong># kernel_coverage.sh</strong></p> <p><strong>3</strong></p> <p><strong>File1 File2 File3</strong></p> <p><strong>0</strong></p> <p><strong>2</strong></p> <p><strong>File1 File2</strong></p> <p>But afterwards I did the following:</p> <pre><code># Kernel Objects # KSH Array &lt;&lt;FILES&gt;&gt; Contains strings that represent # the objects that are published in the Kernel set -A FILES $(ls /dev/daKernel/) function CEILING { local DIVIDEND=$1 local DIVISOR=$2 let RESULT=$((((${DIVIDEND} + ${DIVISOR}) - 1)/${DIVISOR})) echo ${RESULT} } # Checks if the Parameter passed is # a published object of the Kernel and returns # the file size # Returns a string with the size function ZERO_FILE_CHECK { local kernel_path="/dev/daKernel" local FILE_NAME="$kernel_path/$1" local retval=$(ls -l ${FILE_NAME} | awk {'print $5'}) echo $retval } # Checks and returns a statistic of how # many files are in zero in the filesystem # I.E. 3 out of 100 would return 3 function ZERO_FIlES_CHECK { local let FILES_SIZE=${#FILES[@]} local COUNTER=0; for f in "${FILES[@]}" do local let n=$(ZERO_FILE_CHECK $f) if [ $n -eq 0 ]; then let COUNTER=$(($COUNTER+1)) fi done local PERCENTAGE=0 let PERCENTAGE=$(($COUNTER * 100)) let PERCENTAGE=$(CEILING $PERCENTAGE $FILES_SIZE) echo $PERCENTAGE } # Check if the files are not in zero # Input: An expected percentage, if bigger than # this then there are too many files in zero size # Depends on: ZERO_FIlES_CHECK and the FILES array # Returns: 0 (Success) or 1 (Failure) function CHECK_FILES { local let default_percentage=$1 local let ZEROFILE_PERCENTAGE=$(ZERO_FIlES_CHECK) if [[ $ZEROFILE_PERCENTAGE -ge $default_percentage ]]; then return 0; else return 1; fi } </code></pre> <p>And it worked too, it returns me whether a folder has too much files in zero or not. So I though it was all set and on the road to happiness riding a wild broncunicorn.</p> <p>But I was wrong.</p> <p>I placed my magical push_back inside the ZERO_FIlES_CHECK function like the following:</p> <pre><code>function ZERO_FIlES_CHECK { local let FILES_SIZE=${#FILES[@]} local COUNTER=0; for f in "${FILES[@]}" do local let n=$(ZERO_FILE_CHECK $f) if [ $n -eq 0 ]; then let COUNTER=$(($COUNTER+1)) ZeroFilesArr.push_back $f fi done local PERCENTAGE=0 let PERCENTAGE=$(($COUNTER * 100)) let PERCENTAGE=$(CEILING $PERCENTAGE $FILES_SIZE) echo $PERCENTAGE } </code></pre> <p>And tested it using forcing it to find even the slightest file in zero</p> <pre><code>if CHECK_FILES 0; then ZeroFilesArr.print echo $(ZeroFilesArr.size) fi ZeroFilesArr.clear if CHECK_FILES 0; then ZeroFilesArr.print echo $(ZeroFilesArr.size) fi </code></pre> <p>But it always prints the following:</p> <p><strong># kernel_coverage.sh</strong></p> <p>** An empty space here indicating NULL**</p> <p><strong>0</strong></p> <p>** An empty space here indicating NULL**</p> <p><strong>0</strong></p> <p>After trying several ways I am burned out, it seems I can't come up with a clear solution</p> <p>Any help would be greatly appreciated</p> <p>I'm thinking that I have a problem with variable scoping, but I though the global were globals just like anywhere else.</p>
 

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