feat(user/):Add bash script to update .hidden files for nautilus

	new file:   user/bk-naut-hide

diff --git a/user/bk-naut-hide b/user/bk-naut-hide
new file mode 100644 (file)
index 0000000..4826b2f
--- /dev/null
+++ b/user/bk-naut-hide
@@ -0,0 +1,273 @@
+#!/usr/bin/env bash
+# Desc: Scan file system and update '.hidden' files to hide certain
+#   files based on filenames.
+# Usage: bk-naut-hide [DIRS...]
+
+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 $*"; } # runs args as command, reports args if command fails
+checkapp() {
+    # Desc: If arg is a command, save result in assoc array 'appRollCall'
+    # Usage: checkapp arg1 arg2 arg3 ...
+    # Version: 0.1.1
+    # Input: global assoc. array 'appRollCall'
+    # Output: adds/updates key(value) to global assoc array 'appRollCall'
+    # Depends: bash 5.0.3
+    local returnState    
+
+    #===Process Args===
+    for arg in "$@"; do
+       if command -v "$arg" 1>/dev/null 2>&1; then # Check if arg is a valid command
+           appRollCall[$arg]="true";
+           if ! [ "$returnState" = "false" ]; then returnState="true"; fi;
+       else
+           appRollCall[$arg]="false"; returnState="false";
+       fi;
+    done;
+
+    #===Determine function return code===
+    if [ "$returnState" = "true" ]; then
+       return 0;
+    else
+       return 1;
+    fi;
+} # Check that app exists
+checkfile() {
+    # Desc: If arg is a file path, save result in assoc array 'fileRollCall'
+    # Usage: checkfile arg1 arg2 arg3 ...
+    # Version: 0.1.1
+    # Input: global assoc. array 'fileRollCall'
+    # Output: adds/updates key(value) to global assoc array 'fileRollCall';
+    # Output: returns 0 if app found, 1 otherwise
+    # Depends: bash 5.0.3
+    local returnState
+
+    #===Process Args===
+    for arg in "$@"; do
+       if [ -f "$arg" ]; then
+           fileRollCall["$arg"]="true";
+           if ! [ "$returnState" = "false" ]; then returnState="true"; fi;
+       else
+           fileRollCall["$arg"]="false"; returnState="false";
+       fi;
+    done;
+    
+    #===Determine function return code===
+    if [ "$returnState" = "true" ]; then
+       return 0;
+    else
+       return 1;
+    fi;
+} # Check that file exists
+checkdir() {
+    # Desc: If arg is a dir path, save result in assoc array 'dirRollCall'
+    # Usage: checkdir arg1 arg2 arg3 ...
+    # Version 0.1.2
+    # Input: global assoc. array 'dirRollCall'
+    # Output: adds/updates key(value) to global assoc array 'dirRollCall';
+    # Output: returns 0 if all args are dirs; 1 otherwise
+    # Depends: Bash 5.0.3
+    local returnState
+
+    #===Process Args===
+    for arg in "$@"; do
+       if [ -z "$arg" ]; then
+           dirRollCall["(Unspecified Dirname(s))"]="false"; returnState="false";
+       elif [ -d "$arg" ]; then
+           dirRollCall["$arg"]="true";
+           if ! [ "$returnState" = "false" ]; then returnState="true"; fi
+       else
+           dirRollCall["$arg"]="false"; returnState="false";
+       fi
+    done
+    
+    #===Determine function return code===
+    if [ "$returnState" = "true" ]; then
+       return 0;
+    else
+       return 1;
+    fi
+} # Check that dir exists
+displayMissing() {
+    # Desc: Displays missing apps, files, and dirs
+    # Usage: displayMissing
+    # Version 1.0.0
+    # Input: associative arrays: appRollCall, fileRollCall, dirRollCall
+    # Output: stderr: messages indicating missing apps, file, or dirs
+    # Output: returns exit code 0 if nothing missing; 1 otherwise
+    # Depends: bash 5, checkAppFileDir()
+    local missingApps value appMissing missingFiles fileMissing
+    local missingDirs dirMissing
+
+    #==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 "$missingApps" 1>&2;
+    fi;
+    unset value;
+    #===END Display Missing Apps===
+
+    #===BEGIN Display Missing Files===
+    missingFiles="Missing files:";
+    #for key in "${!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 "$missingFiles" 1>&2;
+    fi;
+    unset value;
+    #===END Display Missing Files===
+
+    #===BEGIN Display Missing Directories===
+    missingDirs="Missing dirs:";
+    #for key in "${!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 "$missingDirs" 1>&2;
+    fi;
+    unset value;
+    #===END Display Missing Directories===
+
+    #==END Display errors==
+    #==BEGIN Determine function return code===
+    if [ "$appMissing" == "true" ] || [ "$fileMissing" == "true" ] || [ "$dirMissing" == "true" ]; then
+       return 1;
+    else
+       return 0;
+    fi
+    #==END Determine function return code===
+} # Display missing apps, files, dirs
+get_paths_dothide() {
+    # Desc: Recursively search specified ir for '.hidden' files
+    # Usage: get_paths_dothide arg1
+    # Input: arg1     dir to search
+    # Output: stdout  list of paths of '.hidden' files
+
+    local 
+    # Check input
+    if [[ $# -ne 1 ]]; then die "FATAL:Arg count does not equal 1:$#"; fi;
+    if [[ ! -d "$1" ]]; then die "FATAL:Not a dir:$1"; fi;
+
+    # Search for files named '.hidden'
+    find -L "$1" -type f -name ".hidden" 2>/dev/null    
+}; # Return list of paths of '.hidden' files
+
+main() {
+    local -a dirs_target pat_tohide
+
+    # check input
+    # check and specify list of dirs to search
+    for arg in "$@"; do
+        if [[ -d $arg ]]; then            
+            dirs_target+=("$arg");
+        else
+            die "FATAL:Not a dir:arg:$arg";
+        fi;
+    done;
+    yell "DEBUG:dirs_target:${dirs_target[*]}";
+    
+    # specify filename regex patterns to mark '.hidden'
+    pat_tohide+=(".ots$");
+    pat_tohide+=(".ots.bak$");
+    yell "DEBUG:pat_tohide:${pat_tohide[*]}";
+    
+    # generate list of paths of '.hidden' files
+    for dir in "${dirs_target[@]}"; do
+        yell "DEBUG:generating list of paths of '.hidden' files in dir:$dir";
+        while read -r file; do
+            ls_dothide_f+=("$file");
+        done < <(get_paths_dothide "$dir");
+    done;
+    yell "DEBUG:ls_dothide_f:${ls_dothide_f[*]}";
+    yell "DEBUG:";
+
+    # get list of dirs containing the files
+    while read -r line; do
+        yell "DEBUG:found .hidden file at:$line";
+        dir="$(dirname "$line")";
+        ls_dothide_d+=("$dir");
+    done < <(printf "%s\n" "${ls_dothide_f[@]}")
+    yell "DEBUG:ls_dothide_d:${ls_dothide_d[*]}";
+    yell "DEBUG:";
+
+    # for each dir, write list of files to hide in '.hidden'
+    while read -r dir; do
+        yell "DEBUG:performing actions in dir:$dir";
+        declare -a ls_tohide_fn; # array for filenames to write in '.hidden'
+
+        ## act on each file
+        while read -r file; do
+            yell "DEBUG:considering file:$file";
+            filename="$(basename "$file")";
+            
+            ## check if file is actually a file
+            if [[ ! -f $file ]]; then continue; fi;            
+
+            ## check if file should be hidden according to pattern match
+            unset flag_pat_match;
+            while read -r pat; do
+                if [[ $filename =~ $pat ]]; then
+                    flag_pat_match="true";
+                    break; # don't consider any more patterns for this file
+                else
+                    flag_pat_match="false";
+                fi;
+            done < <(printf "%s\n" "${pat_tohide[@]}");
+
+            ## add file to list to add to '.hidden'
+            if [[ $flag_pat_match == "true" ]]; then
+                yell "DEBUG:adding to ls_tohide_fn:file:$file":
+                yell "DEBUG:filename:$filename";
+                ls_tohide_fn+=("$filename");
+            fi;
+            yell "DEBUG:";
+
+            ## unset variables defined only for this file
+            unset filename flag_pat_match;
+        done < <(find "$dir" -mindepth 1 -maxdepth 1 -type f 2>/dev/null);
+        yell "DEBUG:";
+
+        ## add file names to $dir/'.hidden'
+        ### remove blank lines and sort and uniq
+        while read -r line; do
+              ls_tohide_fn_sortuniq+=("$line");
+        done < <(printf "%s\n" "${ls_tohide_fn[@]}" | sed '/^$/d' | sort | uniq);
+        ls_tohide_fn=("${ls_tohide_fn_sortuniq[@]}");
+        
+        ### write '.hidden'
+        path_hidefile="$dir"/.hidden;
+        yell "DEBUG:Writing contents of .hidden file at path_hidefile:$path_hidefile";
+        yell "DEBUG:ls_tohide_fn:$(printf "%s\n" "${ls_tohide_fn[@]}" )";
+        printf "%s\n" "${ls_tohide_fn[@]}" > "$path_hidefile"
+
+        ## unset variables defined only for this dir
+        unset ls_tohide_fn path_hidefile;
+        
+        yell "DEBUG:";
+    done < <(printf "%s\n" "${ls_dothide_d[@]}");
+}; # main program
+
+main "$@";