feat(bktemp):Add checkAppFileDir template

This template is to show how to check for the existence of specified
apps, files, or directories in `if` statements and indicate which
elements were missing in error messages at the end of the script.

diff --git a/unitproc/bktemp-checkAppFileDir b/unitproc/bktemp-checkAppFileDir
new file mode 100644 (file)
index 0000000..e6e11fe
--- /dev/null
+++ b/unitproc/bktemp-checkAppFileDir
@@ -0,0 +1,171 @@
+#!/bin/bash
+
+#==BEGIN Define script parameters==
+declare -Ag appRollCall # Associative array for storing app status
+declare -Ag fileRollCall # Associative array for storing file status
+declare -Ag dirRollCall # Associative array for storing dir status
+
+#===BEGIN Declare local script functions===
+checkapp() {
+    # Desc: If arg is a command, save result in assoc array 'appRollCall'
+    # Usage: checkapp arg1 arg2 arg3 ...
+    # Input: global assoc. array 'appRollCall'
+    # Output: adds/updates key(value) to global assoc array 'appRollCall'
+    local returnState    
+    #echo "DEBUG:$(date +%S.%N)..Starting checkapp function."
+    #echo "DEBUG:args: $@"
+    #echo "DEBUG:returnState:$returnState"
+
+    #===Process Args===
+    for arg in "$@"; do
+       #echo "DEBUG:processing arg:$arg"
+       if command -v $arg 1>/dev/null 2>&1; then # Check if arg is a valid command
+           appRollCall[$arg]="true";
+           #echo "DEBUG:appRollCall[$arg]:"${appRollCall[$arg]}
+           if ! [ "$returnState" = "false" ]; then returnState="true"; fi
+       else
+           appRollCall[$arg]="false"; returnState="false";
+       fi
+    done
+    
+    #for key in "${!appRollCall[@]}"; do echo "DEBUG:$key => ${appRollCall[$key]}"; done
+    #echo "DEBUG:evaluating returnstate. returnState:"$returnState
+
+    #===Determine function return code===
+    if [ "$returnState" = "true" ]; then
+       #echo "DEBUG:checkapp returns true for $arg";
+       return 0;
+    else
+       #echo "DEBUG:checkapp returns false for $arg";
+       return 1;
+    fi
+} # Check that app exists
+checkfile() {
+    # Desc: If arg is a file path, save result in assoc array 'fileRollCall'
+    # Usage: checkfile arg1 arg2 arg3 ...
+    # Input: global assoc. array 'fileRollCall'
+    # Output: adds/updates key(value) to global assoc array 'fileRollCall';
+    # Output: returns 0 if app found, 1 otherwise
+    local returnState
+
+    #===Process Args===
+    for arg in "$@"; do
+       #echo "DEBUG:processing arg:$arg"
+       if [ -f "$arg" ]; then
+           fileRollCall["$arg"]="true";
+           #echo "DEBUG:fileRollCall[\"$arg\"]:"${fileRollCall["$arg"]}
+           if ! [ "$returnState" = "false" ]; then returnState="true"; fi
+       else
+           fileRollCall["$arg"]="false"; returnState="false";
+       fi
+    done
+
+    #for key in "${!fileRollCall[@]}"; do echo "DEBUG:fileRollCall key [$key] is:${fileRollCall[$key]}"; done
+    #echo "DEBUG:evaluating returnstate. returnState:"$returnState
+    
+    #===Determine function return code===
+    if [ "$returnState" = "true" ]; then
+       #echo "DEBUG:checkapp returns true for $arg";
+       return 0;
+    else
+       #echo "DEBUG:checkapp returns false for $arg";
+       return 1;
+    fi
+} # Check that file exists
+checkdir() {
+    # Desc: If arg is a dir path, save result in assoc array 'dirRollCall'
+    # Usage: checkdir arg1 arg2 arg3 ...
+    # Input: global assoc. array 'dirRollCall'
+    # Output: adds/updates key(value) to global assoc array 'dirRollCall';
+    # Output: returns 0 if app found, 1 otherwise
+    local returnState
+
+    #===Process Args===
+    for arg in "$@"; do
+       #echo "DEBUG:processing arg:$arg"
+       if [ -d "$arg" ]; then
+           dirRollCall["$arg"]="true";
+           #echo "DEBUG:dirRollCall[\"$arg\"]:"${dirRollCall["$arg"]}
+           if ! [ "$returnState" = "false" ]; then returnState="true"; fi
+       else
+           dirRollCall["$arg"]="false"; returnState="false";
+       fi
+    done
+
+    #for key in "${!dirRollCall[@]}"; do echo "DEBUG:dirRollCall key [$key] is:${dirRollCall[$key]}"; done
+    #echo "DEBUG:evaluating returnstate. returnState:"$returnState
+    
+    #===Determine function return code===
+    if [ "$returnState" = "true" ]; then
+       #echo "DEBUG:checkapp returns true for $arg";
+       return 0;
+    else
+       #echo "DEBUG:checkapp returns false for $arg";
+       return 1;
+    fi
+} # Check that dir exists
+#===END Declare local script functions===
+#==END Define script parameters==
+
+#==BEGIN sample code==
+if checkapp cat; then echo "cat found."; fi
+if checkapp gpg; then echo "gpg found."; fi
+if checkapp emaaaacs; then echo "emaaaacs found."; fi
+#==END sample code==
+
+#==BEGIN Display errors==
+#===BEGIN Display Missing Apps===
+missingApps="Missing apps  :"
+#for key in "${!appRollCall[@]}"; do echo "DEBUG:$key => ${appRollCall[$key]}"; done
+for key in "${!appRollCall[@]}"; do
+    value="${appRollCall[$key]}"
+    if [ "$value" = "false" ]; then
+       #echo "DEBUG:Missing apps: $key => $value";
+       missingApps="$missingApps""$key "
+       appMissing="true"
+    fi
+done
+if [ "$appMissing" = "true" ]; then  # Only indicate if an app is missing.
+    echo "$missingApps" 1>&2;
+fi
+#===END Display Missing Apps===
+
+#===BEGIN Display Missing Files===
+missingFiles="Missing files:"
+#for key in "${!fileRollCall[@]}"; do echo "DEBUG:$key => ${fileRollCall[$key]}"; done
+for key in "${!fileRollCall[@]}"; do
+    value="${fileRollCall[$key]}"
+    if [ "$value" = "false" ]; then
+       #echo "DEBUG:Missing files: $key => $value";
+       missingFiles="$missingFiles""$key "
+       fileMissing="true"
+    fi
+done
+if [ "$fileMissing" = "true" ]; then  # Only indicate if an app is missing.
+    echo "$missingFiles" 1>&2;
+fi
+#===END Display Missing Files===
+
+#===BEGIN Display Missing Directories===
+missingDirs="Missing dirs:"
+#for key in "${!dirRollCall[@]}"; do echo "DEBUG:$key => ${dirRollCall[$key]}"; done
+for key in "${!dirRollCall[@]}"; do
+    value="${dirRollCall[$key]}"
+    if [ "$value" = "false" ]; then
+       #echo "DEBUG:Missing dirs: $key => $value";
+       missingDirs="$missingDirs""$key "
+       dirMissing="true"
+    fi
+done
+if [ "$dirMissing" = "true" ]; then  # Only indicate if an dir is missing.
+    echo "$missingDirs" 1>&2;
+fi
+#===END Display Missing Directories===
+
+#===BEGIN Display Failed Functions===
+if [ ${#failedFunctions} -gt 0 ]; then # Only indicate if an function failed.
+    echo "Failed functions:${failedFunctions[@]}" 1>&2;
+fi
+#===END Display Failed Functions===
+
+#==END Display errors==