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#!/bin/bash
###################################################################################################
# .drive-select-objects
###################################################################################################
# Copyright 2017-2022 Jean-Christophe Manciot <jcmanciot@sdxlive.com>
#
# Licensed under a GPLv3 License.
# You may not use this file except in compliance with the License. You may obtain a copy of the 
# License at:
#
#    https://www.gnu.org/licenses/gpl-3.0.md
#
# The licensor cannot revoke these freedoms as long as you follow the license terms.
#
# Attribution — You must give appropriate credit, provide a link to the license, and indicate if 
#               changes were made. You may do so in any reasonable manner, but not in any way that 
#               suggests the licensor endorses you or your use.
###################################################################################################

###################################################################################################
#
# Selecting the local/remote files/folders (objects) by honouring the filters within ./.driveselect 
# & <google_drive_folder>/.driveignore, down to the depth set within
# <google_drive_folder>/.driverc.
# By default, when those files are empty, all objects recursively found locally or remotely 
# (<source>) below the current working directory are affected by the current <command>.
#
###################################################################################################
#
# Requirements:
# ------------
#
# - We assume that:
#       + drive-google package is already installed.
#       + coreutils, findutils, grep, perl-base, sed & zenity packages are already installed.
#
# - This command must be called from within your local Google drive folder(s).
#
# - <google_drive_folder>/.driverc:it must be properly setup, either manually or with drive-setup,
#                                  with the following settings:
#       * depth=
#               + -1: an infinite traversal depth, i.e recursive traversal from the current working  
#                     directory until there is no more child folder
#               + non-zero number: a fixed traversal depth
#       * ...: cf. https://github.com/odeke-em/drive for a complete list of available  
#              options. They can only be set manually through .driverc or through drive-setup for
#              the sake of simplicity.
#              Cf. /etc/drive-google/.driverc for some examples.
#
# - <google_drive_folder>/.driveignore: it may be used to exclude/include some objects from the 
#                                       scope of the current drive-<command> by using regular
#                                       expressions.
#                                       Cf. /etc/drive-google/.driveignore for its format & some 
#                                       examples.
#
# - ./.driveselect: it may be used to include/exclude the objects from the scope of the current 
#                   drive-<command>. 
#                   Cf. /etc/drive-google/.driveselect for its format & some examples.
#
###################################################################################################
#
# Parameters:
# ----------
#
# - <source>: where to recursively find objects:
#       + local_fs: on the local file system within Google Drive folder where the call is made.
#       + remote_fs: on the remote Google Drive from the equivalent folder where the call is made.
#       + select_file: all objects are already listed under [<command>] section in .driveselect.
#
# - <command>: related command corresponding to the section within ./.driveselect and/or 
#              <google_drive_folder>/.driveignore.
#              Cf. /etc/drive-google/.driveselect & /etc/drive-google/.driveignore for a list of 
#              currently supported commands.
#
###################################################################################################
#
# Return values:
# -------------
#
# - array of filtered & sorted object names (with their path)
#   return code: 0
# - "Outside drive context" if we have found the local root Google Drive folder, but we are not 
#   located beneath it.
#   return code: 7
# - "No drive context found" if there is no .gd folder above and beneath the local folder:
#       + either drive has not been initialized properly (at least one hop away from '/')
#       + or we are not located below the <google_drive_folder> top level branch
#   return code: 8
# - "Connection error accessing your Google Drive online in ${local_folder}" if drive could not 
#   connect to the online Google Drive. 
#   return code: 9
#
###################################################################################################
#
# Usage examples:
# --------------
# cd ~/<google_drive_folder>/parent/folder/
# readarray -t filtered_objects < <(.drive-select-objects 'remote_fs' 'pull')
# printf '%s\n' "${filtered_objects[@]}"
#
###################################################################################################
#
# Notes:
# -----
#
# The functions defined below use special $'string' expressions.
# Words of the form $'string' are treated specially by bash.
# The word expands to string, with backslash-escaped characters replaced as specified by the ANSI C 
# standard. Backslash escape sequences, if present, are decoded as follows:
# - \\     backslash
# - \'     single quote
# - \"     double quotes
# - \n     new line
# - \a     alert (bell)
# - \b     backspace
# - \e
# - \E     an escape character
# - \f     form feed
# - \n     new line
# - \r     carriage return
# - \t     horizontal tab
# - \v     vertical tab
# - \nnn   the eight-bit character whose value is the octal value nnn (one to three digits)
# - \xHH   the eight-bit character whose value is the hexadecimal value HH (one or two hex digits)
# - \cx    a control-x character
#
###################################################################################################
if [[ $LOG_DRIVE_SELECT_OBJECTS == ON ]]; then
        # Getting the last existing file descriptor of ~/.drive-google/logs/drive-google.log
        fd=$(ls -al /proc/$$/fd | grep ~/.drive-google/logs/drive-google.log | sed -E 's|^.* ([0-9]+) -> .*$|\1|g' | sort -V | tail -n 1)

        # Case where fd is unset, i.e the file ~/.drive-google/logs/drive-google.log has not yet been opened
        if [[ -z $fd ]]; then
                lowest_unused_fd () 
                {
                        local fd=0
                        while [ -e /proc/$$/fd/${fd} ]; do
                                fd=$((fd+1))
                        done
                        echo $fd
                }
                fd=$(lowest_unused_fd)

                # Opening ~/.drive-google/logs/drive-google.log as file descriptor $fd for appending
                eval "exec $fd>> ~/.drive-google/logs/drive-google.log"
        fi

        # Writing the trace output generated when set -x is enabled to file descriptor $fd 
        eval "BASH_XTRACEFD=$fd"
        # Logging line numbers - We could also use ${0} for ${BASH_SOURCE}
        BASH_SOURCE_BASENAME=$(basename ${BASH_SOURCE})
        export PS4='${BASH_SOURCE_BASENAME}.${LINENO}+ '
        # Expanding all variables and prints the full commands before output of the command
        set -x
fi

# Preventing globbing (pathname expansion)
set -o noglob
# Allowing extended globbing
shopt -s extglob
# Expanding aliases
shopt -s expand_aliases

# Including alias definitions to sed/grep/awk/perl commands for readability sake
. /usr/include/drive-google/aliases

#------------------------------------build-find-include-pattern------------------------------------
# Building the include pattern to be used by 'find' only on local objects --> without prepended stats 
# Parameters:
# - <$1>:
#       + true:         use ${included_regex_patterns[@]}
#       + false:        don't use ${included_regex_patterns[@]}
# - <$2>:
#       + true:         use ${included_objects[@]}
#       + false:        don't use ${included_objects[@]}
# Return values:
# - $find_include_pattern
# Usage: find_include_pattern=$(build-find-include-pattern <true|false> <true|false>)
#        eval find "$find_include_pattern"
# The function uses the global array variables:
# - "${included_regex_patterns[@]}"
# - "${eval_esc_included_objects[@]}"
function build-find-include-pattern ()
{
        local find_include_pattern

        # Building include patterns for find

        # 1) Using regular expressions from .driveignore
        if [[ ($1 == 'true') && (${#included_regex_patterns[@]} -ne 0) ]]; then
                for included_regex_pattern in "${included_regex_patterns[@]}"
                do
                        if [[ -z "$find_include_pattern" ]]; then
                                find_include_pattern="-regextype grep -regex '\./${included_regex_pattern}'"
                        else
                                find_include_pattern="$find_include_pattern -o -regex '\./${included_regex_pattern}'"
                        fi
                done
        fi

        # 2) Using patterns from .driveselect
        # The $included_object may contain some standard wildcards
        if [[ ($2 == 'true') && (${#eval_esc_included_objects[@]} -ne 0) ]]; then
                for eval_esc_included_object in "${eval_esc_included_objects[@]}"
                do
                        if [[ -z "$find_include_pattern" ]]; then
                                find_include_pattern="-path $'./${eval_esc_included_object}'"
                        else
                                find_include_pattern="${find_include_pattern} -o -path $'./${eval_esc_included_object}'"
                        fi
                done
        fi

        # Returning the include pattern for find
        echo "$find_include_pattern"
}

#------------------------------------build-find-exclude-pattern------------------------------------
# Building the exclude pattern to be used by 'find' only on local objects --> without prepended stats 
# Parameters:
# - <$1>:
#       + true:         use ${excluded_regex_patterns[@]}
#       + false:        don't use ${excluded_regex_patterns[@]}
# - <$2>:
#       + true:         use ${excluded_objects[@]}
#       + false:        don't use ${excluded_objects[@]}
# Return values:
# - "$find_exclude_pattern"
# Usage: find_exclude_pattern=$(build-find-exclude-pattern <true|false> <true|false>)
#        eval find "$find_exclude_pattern"
# The function uses the global array variables:
# - "${excluded_regex_patterns[@]}"
# - "${eval_esc_excluded_objects[@]}"
function build-find-exclude-pattern ()
{
        local find_exclude_pattern

        # Building exclude patterns for find
        # 1) Using regular expressions from .driveignore
        if [[ ($1 == 'true') && (${#excluded_regex_patterns[@]} -ne 0) ]]; then
                for excluded_regex_pattern in "${excluded_regex_patterns[@]}"
                do
                        if [[ -z "$find_exclude_pattern" ]]; then
                                find_exclude_pattern="-regextype grep ! -regex '\./${excluded_regex_pattern}'"
                        else
                                find_exclude_pattern="$find_exclude_pattern ! -regex '\./${excluded_regex_pattern}'"
                        fi
                done
        fi

        # 2) Using patterns from .driveselect
        # The $excluded_object may contain some standard wildcards
        if [[ ($2 == 'true') && (${#eval_esc_excluded_objects[@]} -ne 0) ]]; then
                for eval_esc_excluded_object in "${eval_esc_excluded_objects[@]}"
                do
                        if [[ -z "$find_exclude_pattern" ]]; then
                                find_exclude_pattern="! -path $'./${eval_esc_excluded_object}'"
                        else
                                find_exclude_pattern="${find_exclude_pattern} ! -path $'./${eval_esc_excluded_object}'"
                        fi
                done
        fi

        # Returning the exclude pattern for find
        echo "$find_exclude_pattern"
}

#------------------------------------build-grep-include-pattern-------------------------------------
# Building the include pattern to be used with 'grep' either on local or remote objects
# Parameters:
# - <$1>:
#       + true:         use ${included_regex_patterns[@]}
#       + false:        don't use ${included_regex_patterns[@]}
# - <$2>:
#       + true:         use ${included_objects[@]}
#       + false:        don't use ${included_objects[@]}
# - <$3>:
#       + local:        no prepended stats in the object name
#       + remote:       prepended stats in the object name
# Return values:
# - "grep -P -- $'$grep_include_pattern'"
# Usage: grep_include_pattern=$(build-grep-include-pattern <true|false> <true|false> <local|remote>)
#        eval "$grep_include_pattern"
# The function uses the global array variables:
# - "${included_regex_patterns[@]}"
# - "${grep_esc_included_objects[@]}"
function build-grep-include-pattern ()
{
        local grep_include_pattern

        # Building include patterns for grep -P
 
        # 1) Using regular expressions from .driveignore
        if [[ ($1 == 'true') && (${#included_regex_patterns[@]} -ne 0) ]]; then
                # Using regular expressions from .driveignore 
                for included_regex_pattern in "${included_regex_patterns[@]}"
                do
                        if [[ -z "$grep_include_pattern" ]]; then
                                if [[ $3 == 'local' ]]; then
                                        grep_include_pattern="${included_regex_pattern}"
                                elif [[ $3 == 'remote' ]]; then
                                        grep_include_pattern="^. [0-9]+.*B ${included_regex_pattern}"
                                fi
                        else
                                if [[ $3 == 'local' ]]; then
                                        grep_include_pattern="${grep_include_pattern}|${included_regex_pattern}"
                                elif [[ $3 == 'remote' ]]; then
                                        grep_include_pattern="${grep_include_pattern}|^. [0-9]+.*B ${included_regex_pattern}"
                                fi
                        fi
                done
        fi

        # 2) Using patterns from .driveselect
        # The $included_object may contain some standard wildcards
        if [[ ($2 == 'true') && (${#grep_esc_included_objects[@]} -ne 0) ]]; then
                # Using patterns from .driveselect
                # Some supported standard wildcard(s) may be in $included_object
                for grep_esc_included_object in "${grep_esc_included_objects[@]}"
                do
                        if [[ -z "$grep_include_pattern" ]]; then
                                if [[ $3 == 'local' ]]; then
                                        grep_include_pattern="${grep_esc_included_object}"
                                elif [[ $3 == 'remote' ]]; then
                                        grep_include_pattern="^. [0-9]+.*B ${grep_esc_included_object}"
                                fi
                        else
                                if [[ $3 == 'local' ]]; then
                                        grep_include_pattern="${grep_include_pattern}|${grep_esc_included_object}"
                                elif [[ $3 == 'remote' ]]; then
                                        grep_include_pattern="${grep_include_pattern}|^. [0-9]+.*B ${grep_esc_included_object}"
                                fi
                        fi
                done
        fi

        # Returning the grep include pattern
        if [[ ! -z "$grep_include_pattern" ]]; then
                echo "grep -P -- $'$grep_include_pattern'"
        fi
}

#------------------------------------build-grep-exclude-pattern-------------------------------------
# Building the exclude pattern to be used with 'grep' either on local or remote objects
# Parameters:
# - <$1>:
#       + true:         use ${excluded_regex_patterns[@]}
#       + false:        don't use ${excluded_regex_patterns[@]}
# - <$2>:
#       + true:         use ${excluded_objects[@]}
#       + false:        don't use ${excluded_objects[@]}
# - <$3>:
#       + local:        no prepended stats in the object name
#       + remote:       prepended stats in the object name
# Return values:
# - "grep -vP -- $'$grep_exclude_pattern'"
# Usage: grep_exclude_pattern=$(build-grep-exclude-pattern <true|false> <true|false> <local|remote>)
#        eval "$grep_exclude_pattern"
# The function uses the global array variables:
# - "${excluded_regex_patterns[@]}"
# - "${grep_esc_excluded_objects[@]}"
function build-grep-exclude-pattern ()
{
        local grep_exclude_pattern

        # Building exclude patterns with grep
        # 1) Using regular expressions from .driveignore
        if [[ ($1 == 'true') && (${#excluded_regex_patterns[@]} -ne 0) ]]; then
                # Using regular expressions from .driveignore 
                for excluded_regex_pattern in "${excluded_regex_patterns[@]}"
                do
                        if [[ -z "$grep_exclude_pattern" ]]; then
                                if [[ $3 == 'local' ]]; then
                                        grep_exclude_pattern="${excluded_regex_pattern}$"
                                elif [[ $3 == 'remote' ]]; then
                                        grep_exclude_pattern="^. [0-9]+.*B ${excluded_regex_pattern}$"
                                fi
                        else
                                if [[ $3 == 'local' ]]; then
                                        grep_exclude_pattern="${grep_exclude_pattern}|${excluded_regex_pattern}$"
                                elif [[ $3 == 'remote' ]]; then
                                        grep_exclude_pattern="${grep_exclude_pattern}|^. [0-9]+.*B ${excluded_regex_pattern}$"
                                fi
                        fi
                done
        fi

        # 2) Using patterns from .driveselect
        # The $esc_excluded_object may contain some standard wildcards converted to regex
        if [[ ($2 == 'true') && (${#grep_esc_excluded_objects[@]} -ne 0) ]]; then
                for grep_esc_excluded_object in "${grep_esc_excluded_objects[@]}"
                do
                        if [[ -z "$grep_exclude_pattern" ]]; then
                                if [[ $3 == 'local' ]]; then
                                        grep_exclude_pattern="${grep_esc_excluded_object}$"
                                elif [[ $3 == 'remote' ]]; then
                                        grep_exclude_pattern="^. [0-9]+.*B ${grep_esc_excluded_object}$"
                                fi
                        else
                                if [[ $3 == 'local' ]]; then
                                        grep_exclude_pattern="${grep_exclude_pattern}|${grep_esc_excluded_object}$"
                                elif [[ $3 == 'remote' ]]; then
                                        grep_exclude_pattern="${grep_exclude_pattern}|^. [0-9]+.*B ${grep_esc_excluded_object}$"
                                fi
                        fi
                done
        fi

        # Returning the exclude pattern
        if [[ ! -z "$grep_exclude_pattern" ]]; then
                echo "grep -vP -- $'$grep_exclude_pattern'"
        fi
}

#------------------------------------build-sed-exclude-pattern-------------------------------------
# Building the exclude pattern to be used with 'sed' either on local or remote objects
# Parameters:
# - <$1>:
#       + local:        no prepended stats in the object name
#       + remote:       prepended stats in the object name
# Return values:
# - "sed -E $'$sed_exclude_pattern'"
# Usage: sed_exclude_pattern=$(build-sed-exclude-pattern <local|remote>)
#        eval "$sed_exclude_pattern"
# The function uses the global array variable:
# - "${sed_esc_excluded_objects[@]}"
# ---------------------------------------Warning---------------------------------------------------
# ${excluded_regex_patterns[@]} from .driveignore cannot be used here because they are already used 
# by grep.
# Grep & sed use different escape characters list: cf. /usr/include/drive-google/aliases
# ---------------------------------------Warning---------------------------------------------------
function build-sed-exclude-pattern ()
{
        local sed_exclude_pattern

        # Building exclude patterns with sed
        # Using only patterns from .driveselect
        # The $esc_excluded_object may contain some standard wildcards converted to regex
        if [[ ${#sed_esc_excluded_objects[@]} -ne 0 ]]; then
                for sed_esc_excluded_object in "${sed_esc_excluded_objects[@]}"
                do
                        if [[ -z "$sed_exclude_pattern" ]]; then
                                if [[ $1 == 'local' ]]; then
                                        sed_exclude_pattern="/${sed_esc_excluded_object}$/d"
                                elif [[ $1 == 'remote' ]]; then
                                        sed_exclude_pattern="/^. [0-9]\+.*B ${sed_esc_excluded_object}$/d"
                                fi
                        else
                                if [[ $1 == 'local' ]]; then
                                        sed_exclude_pattern="${sed_exclude_pattern}; /${sed_esc_excluded_object}$/d"
                                elif [[ $1 == 'remote' ]]; then
                                        sed_exclude_pattern="${sed_exclude_pattern}; /^. [0-9]\+.*B ${sed_esc_excluded_object}$/d"
                                fi
                        fi
                done
        fi

        # Returning the exclude pattern
        if [[ ! -z "$sed_exclude_pattern" ]]; then
                echo "sed $'$sed_exclude_pattern'"
        fi
}

#------------------------------------select-hidden-objects-----------------------------------------
# Selecting hidden objects (those which begin with a dot) or not based on hidden configuration in 
# .driverc passed as parameter
# Parameters:
# - <hidden>:
#       + true:         keep hidden objects
#       + false:        drop hidden objects
# Return values:
# - "cat":                                       hidden objects are not filtered
# - "sed $'$sed_select_hidden_objects_pattern'": hidden objects are filtered
# Usage: sed_select_hidden_objects_pattern=$(select-hidden-objects <true|false>)
#        eval "$sed_select_hidden_objects_pattern"
# The function uses no global variable
function select-hidden-objects ()
{

        if [[ $1 == 'true' ]]; then
                # 1) keep hidden objects
                # Nothing is filtered
                echo 'cat'
        else
                # 2) drop hidden objects
                sed_select_hidden_objects_pattern="/^\\..*/d; /.*\\/\\..*/d"
                echo "sed $'$sed_select_hidden_objects_pattern'"
        fi
}

#------------------------------------.drive-select-objects---------------------------------------
source=$1
command=$2

# Finding local root Google Drive folder
gd_root_folder="$(.drive-find-gd)"

case $? in
        0)
                # Everything is fine - we continue
                ;;
        7)
                # We have found the local root Google Drive folder, but we are not located beneath it.
                echo "Outside drive context"
                exit 7
                ;;
        8)
                # We cannot locate .gd folder above and beneath the local folder
                echo "No drive context found"
                exit 8
                ;;
        *)
                # Something is fatally wrong
                echo "Something is fatally wrong"
                exit 99
                ;;
esac

local_folder="$(pwd)"

# Removing all occurrences of '&' in $object as a workaround to a markup ampersand issue with zenity
noamp_local_folder="$(echo "${local_folder}" | rm_ampersand)"

local_folder_path_from_gd_root="${local_folder#$gd_root_folder}"

# Escaping the '$.*/[\]^' characters in sed searched string
# Letters, digits and (){}+?| must not be escaped
esc_local_folder_path_from_gd_root="$(echo "$local_folder_path_from_gd_root" | escape_sed_bre_search_string)"

# Reading depth from .driverc
depth_value=$(.drive-read-driverc depth "$command")
if [[ -z "$depth_value" ]]; then
        # Setting default value
        depth_value=-1
fi

# Reading hidden_value from .driverc
hidden_value=$(.drive-read-driverc hidden "$command")

if [[ "$hidden_value" != 'true' ]]; then
        # Setting default value
        hidden_value='false'
fi

#--------------------------Reading .driveselect----------------------------------------------------
# Array which will contain all read included objects names from .driveselect (not beginning with !)
read_included_objects=()
# and for which some special characters are escaped for eval
read_eval_esc_included_objects=()
# and for which some special characters are escaped for grep searched string
read_grep_esc_included_objects=()
# Array which will contain all read excluded objects names from .driveselect (beginning with ! before its removal)
read_excluded_objects=()
# and for which some special characters are escaped for eval
read_eval_esc_excluded_objects=()
# and for which some special characters are escaped for grep searched string
read_grep_esc_excluded_objects=()
# and for which some special characters are escaped for sed searched string
read_sed_esc_excluded_objects=()
# Array which will contain all sorted & deduplicated included objects names from .driveselect (not beginning with !)
included_objects=()
# and for which some special characters are escaped for eval
eval_esc_included_objects=()
# and for which some special characters are escaped for grep searched string
grep_esc_included_objects=()
# Array which will contain all sorted & deduplicated excluded objects names from .driveselect (beginning with ! before its removal)
excluded_objects=()
# and for which some special characters are escaped for eval
eval_esc_excluded_objects=()
# and for which some special characters are escaped for grep searched string
grep_esc_excluded_objects=()
# and for which some special characters are escaped for sed searched string
sed_esc_excluded_objects=()

section='out'
command_section=false

# If .driveselect exists
if [[ -f .driveselect ]]; then
        # Reading the object names within .driveselect in the right [$command] or [global] section
        # Some standard wildcards are supported
        while IFS='' read -r line || [[ -n "$line" ]]; do
                # Checking for blank lines or comments
                if [[ (-z "${line}") || ("${line}" =~ ^#) ]]; then
                        continue
                # Checking for [global] or [all] or [*]
                elif [[ "$line" =~ (^\[global\]$)|(^\[all\]$)|(^\[\*\]$) ]]; then
                        section='in'
                        unset read_included_objects
                        unset esc_read_excluded_objects
                # Checking for [$command] (or among other commands separated by /)
                elif [[ ("$line" =~ ^\[${command}\]$) || ("$line" =~ ^\[.*\/${command}\]$) || ("$line" =~ ^\[${command}\/.*\]$) || ("$line" =~ ^\[.*\/${command}\/.*\]$) ]]; then
                        # [$command] section replaces [global] section
                        section='in'
                        unset read_included_objects
                        unset esc_read_excluded_objects
                        command_section=true
                elif [[ ($section == 'in') && ("$line" =~ ^\[.*\]$) ]]; then
                        if [[ $command_section == 'true' ]]; then
                                # We've just finished reading the last [$command] section: we're done
                                break
                        else
                                section='out'
                        fi
                elif [[ $section == 'in' ]]; then
                        if [[ "$line" =~ ^! ]]; then
                                # Line begins with !: object to be excluded
                                #       - Removing leading !
                                excluded_object=$(echo "$line" | rm_not)
                                read_excluded_objects=("${read_excluded_objects[@]}" "$excluded_object")
                                #       - Escaping some special characters for later eval:
                                #               + single quote
                                #               + double quotes
                                eval_esc_excluded_object=$(echo "$excluded_object" | escape_single_quotes | escape_double_quotes)
                                read_eval_esc_excluded_objects=("${read_eval_esc_excluded_objects[@]}" "$eval_esc_excluded_object")
                                #       - Escaping the '$.\^(){}+' characters for later grep -vP searched string
                                #         '?*[]' are not escaped
                                #       - Replacing some wildcards by their regular expression equivalent ([] are left unmodified)
                                #               + ? --> .
                                #               + * --> .*
                                #       - Escaping some special characters for later eval: 
                                #         Done after previous escaping to prevent backslash escapîng
                                #               + single quote
                                #               + double quotes
                                grep_esc_excluded_object=$(echo "$excluded_object" | escape_grep_search_string | replace_wildcards_regex | escape_single_quotes | escape_double_quotes)
                                read_grep_esc_excluded_objects=("${read_grep_esc_excluded_objects[@]}" "$grep_esc_excluded_object")
                                #       - Escaping the '$.^/\' characters for later sed searched string
                                #       - Letters, digits and '(){}+?|[]*' are not  escaped
                                #       - Replacing some wildcards by their regular expression equivalent ([] are left unmodified)
                                #               + ? --> .
                                #               + * --> .*
                                #       - Escaping some special characters for later eval: 
                                #         Done after previous escaping to prevent backslash escapîng
                                #               + single quote
                                #               + double quotes
                                sed_esc_excluded_object=$(echo "$excluded_object" | escape_limited_sed_bre_search_string | replace_wildcards_regex | escape_single_quotes | escape_double_quotes)
                                read_sed_esc_excluded_objects=("${read_sed_esc_excluded_objects[@]}" "$sed_esc_excluded_object")
                        else
                                # Line does not begin with !: object to be included
                                read_included_objects=("${read_included_objects[@]}" "$line")
                                #       - Escaping some special characters for later eval:
                                #               + single quote
                                #               + double quotes
                                eval_esc_included_object=$(echo "$line" | escape_single_quotes | escape_double_quotes)
                                read_eval_esc_included_objects=("${read_eval_esc_included_objects[@]}" "$eval_esc_included_object")
                                #       - Escaping the '$.\^(){}+' characters for later grep -P searched string
                                #         '?*[]' are not escaped
                                #       - Replacing some wildcards by their regular expression equivalent ([] are left unmodified)
                                #               + ? --> .
                                #               + * --> .*
                                #       - Escaping some special characters for later eval: 
                                #         Done after previous escaping to prevent backslash escapîng
                                #               + single quote
                                #               + double quotes
                                grep_esc_included_object=$(echo "$line" | escape_grep_search_string | replace_wildcards_regex | escape_single_quotes | escape_double_quotes)
                                read_grep_esc_included_objects=("${read_grep_esc_included_objects[@]}" "$grep_esc_included_object")
                        fi
                fi
        done < .driveselect
fi

# Sorting & deduplicating the object names in alphabatical order
if [[ ${#read_included_objects[@]} -ne 0 ]]; then
        IFS=$'\n' included_objects=($(sort -u <<<"${read_included_objects[*]}"))
        unset IFS
fi
# Sorting & deduplicating the object names in alphabatical order
if [[ ${#read_eval_esc_included_objects[@]} -ne 0 ]]; then
        IFS=$'\n' eval_esc_included_objects=($(sort -u <<<"${read_eval_esc_included_objects[*]}"))
        unset IFS
fi
# Sorting & deduplicating the object names in alphabatical order
if [[ ${#read_grep_esc_included_objects[@]} -ne 0 ]]; then
        IFS=$'\n' grep_esc_included_objects=($(sort -u <<<"${read_grep_esc_included_objects[*]}"))
        unset IFS
fi
# Sorting & deduplicating the object names in alphabatical order
if [[ ${#read_excluded_objects[@]} -ne 0 ]]; then
        IFS=$'\n' excluded_objects=($(sort -u <<<"${read_excluded_objects[*]}"))
        unset IFS
fi
# Sorting & deduplicating the object names in alphabatical order
if [[ ${#read_eval_esc_excluded_objects[@]} -ne 0 ]]; then
        IFS=$'\n' eval_esc_excluded_objects=($(sort -u <<<"${read_eval_esc_excluded_objects[*]}"))
        unset IFS
fi
# Sorting & deduplicating the object names in alphabatical order
if [[ ${#read_grep_esc_excluded_objects[@]} -ne 0 ]]; then
        IFS=$'\n' grep_esc_excluded_objects=($(sort -u <<<"${read_grep_esc_excluded_objects[*]}"))
        unset IFS
fi
# Sorting & deduplicating the object names in alphabatical order
if [[ ${#read_sed_esc_excluded_objects[@]} -ne 0 ]]; then
        IFS=$'\n' sed_esc_excluded_objects=($(sort -u <<<"${read_sed_esc_excluded_objects[*]}"))
        unset IFS
fi

#--------------------------Reading .driveignore----------------------------------------------------
# Array which will contain all regular expressions from .driveignore including objects from the scope of the current drive-<command>
read_included_regex_patterns=()
# Array which will contain all regular expressions from .driveignore excluding objects from the scope of the current drive-<command>
read_excluded_regex_patterns=()
# Array which will contain all sorted & deduplicated regular expressions from .driveignore including objects from the scope of the current drive-<command>
included_regex_patterns=()
# Array which will contain all sorted & deduplicated regular expressions from .driveignore excluding objects from the scope of the current drive-<command>
excluded_regex_patterns=()

#--------------------------The sections feature is not supported by drive yet---------------------- 
# section='out'
# command_section=false
#
# If .driveignore exists
# if [[ -f "${gd_root_folder}"/.driveignore ]]; then
#         # Reading the regular expressions within .driveignore in the right [$command] or [global] section
#         while IFS='' read -r line || [[ -n "$line" ]]; do
#                 # Checking for blank lines or comments
#                 if [[ (-z "${line}") || ("${line}" =~ ^#) ]]; then
#                         continue
#                 # Checking for [global] or [all] or [*]
#                 elif [[ "$line" =~ (^\[global\])|(^\[all\])|(^\[\*\]) ]]; then
#                         section='in'
#                         unset read_included_regex_patterns
#                         unset read_excluded_regex_patterns
#                 # Checking for [$command] (or among other commands separated by /)
#                 elif [[ ("$line" =~ ^\[${command}\]) || ("$line" =~ ^\[.*\/${command}\]) || ("$line" =~ ^\[${command}\/.*\]) || ("$line" =~ ^\[.*\/${command}\/.*\]) ]]; then
#                         # [$command] section replaces [global] section
#                         section='in'
#                         unset read_included_regex_patterns
#                         unset read_excluded_regex_patterns
#                         command_section=true
#                 elif [[ ($section == 'in') && ("$line" =~ ^\[.*\]) ]]; then
#                         if [[ $command_section == 'true' ]]; then
#                                 # We've just finished reading the last [$command] section: we're done
#                                 break
#                         else
#                                 section='out'
#                         fi
#                 elif [[ $section == 'in' ]]; then
#                         if [[ "$line" =~ ^! ]]; then
#                                 # Line begins with !: objects to be included
#                                 #       - Removing leading !
#                                 included_regex_pattern=$(echo "$line" | sed 's|^!||')
#                                 read_included_regex_patterns=("${read_included_regex_patterns[@]}" "$included_regex_pattern")
#                         else
#                                 # Line does not begin with !: objects to be excluded
#                                 read_excluded_regex_patterns=("${read_excluded_regex_patterns[@]}" "$line")
#                         fi
#                 fi
#         done < "${gd_root_folder}"/.driveignore
# fi
#--------------------------The sections feature is not supported by drive yet---------------------- 

# If .driveignore exists
if [[ -f "${gd_root_folder}"/.driveignore ]]; then
        while IFS='' read -r line || [[ -n "$line" ]]; do
                # Checking for blank lines or comments
                if [[ (-z "$line") || ("$line" =~ ^#) ]]; then
                        continue
                elif [[ "$line" =~ ^! ]]; then
                        # Removing leading ! before storing the inverted regex
                        stripped_line="$(echo $line | rm_not)"
                        read_included_regex_patterns=("${read_included_regex_patterns[@]}" "$stripped_line")
                else
                        read_excluded_regex_patterns=("${read_excluded_regex_patterns[@]}" "$line")
                fi
        done < "${gd_root_folder}"/.driveignore
fi

# Sorting & deduplicating the object names in alphabatical order
if [[ ${#read_included_regex_patterns[@]} -ne 0 ]]; then
        IFS=$'\n' included_regex_patterns=($(sort -u <<<"${read_included_regex_patterns[*]}"))
        unset IFS
fi
# Sorting & deduplicating the object names in alphabatical order
if [[ ${#read_excluded_regex_patterns[@]} -ne 0 ]]; then
        IFS=$'\n' excluded_regex_patterns=($(sort -u <<<"${read_excluded_regex_patterns[*]}"))
        unset IFS
fi

#--------------------------Building the complete/filtered list of included objects into:-----------
#       - ${complete_objects[@]} for 'remote_fs' source;                        **the objects will be filtered afterwards**
#       - ${filtered_objects[@]} for 'local_fs' and 'select_file' sources:      **the objects are filtered now**

esc_excluded_objects_paths=()
# Array which will contain all read object names from .driveignore & .driveselect and recursively found remotely
complete_objects=()

# Array which will contain all objects from ${included_objects[@]}/${complete_objects[@]} filtered with:
#       - ${excluded_regex_patterns[@]}         read from .driveignore
#       - ${excluded_objects[@]}                read from .driveselect
# Job done below only for 'local_fs' source
# Job done later for 'remote_fs' source
# Job already done for 'select_file' source
filtered_objects=()

# Array which will contain all sorted (dismissing the first columns describing the object stats) 
# & deduplicated objects from ${filtered_objects[@]}
sorted_objects=()

# Array which will contain all objects names from ${sorted_objects[@]} trimmed:
#       - only for delete and trash commands
#       - if a file has been previously filtered, we make sure its folder is removed from the final list
trimmed_objects=()

#--------------------------No ${included_objects[@]} nor ${included_regex_patterns[@]}-------------
if [[ (${#included_objects[@]} -eq 0) && (${#included_regex_patterns[@]} -eq 0) ]]; then
        # .driveselect is empty regarding included objects, so all recursively found objects will be affected by the command
        # except for all filtered objects
        case $source in
                # When the source objects are remote, the list objects are made with "drive list"
                remote_fs)
                        # Reading all objects with "drive list" after having kept only:
                        #       + the object type (d: folder and -:file) 
                        #       + the object size (in B, KB, MB, TB...))
                        #       + the object name without its $local_folder_path_from_gd_root/ (all returned objects path start at GD root folder)
                        if [[ $command != 'untrash' ]]; then
                                while IFS= read -d $'\n' -r object ; do
                                        if [[ "${object[@]}" =~ 'Get https://www.googleapis.com/drive/' ]]; then
                                                # Connection error
                                                # Displaying the error 
                                                zenity --error --title "Fatal connection error accessing your Google Drive online in $noamp_local_folder" --text="Could not connect to https://www.googleapis.com/drive/v2/files or/nor to https://accounts.google.com/o/oauth2/token" --width 1400

                                                # Aborting
                                                echo "Connection error accessing your Google Drive online in ${local_folder}"
                                                exit 9
                                        fi

                                        complete_objects=("${complete_objects[@]}" "$object")
                                done < <(drive list -long -depth $depth_value -no-prompt 2>&1 | extract_object_type_size_name)
                        else
                                # Reading the trash
                                while IFS= read -d $'\n' -r object ; do
                                        if [[ "${object[@]}" =~ 'Get https://www.googleapis.com/drive/' ]]; then
                                                # Connection error
                                                # Displaying the error 
                                                zenity --error --title "Fatal connection error accessing your Google Drive online in $noamp_local_folder" --text="Could not connect to https://www.googleapis.com/drive/v2/files or/nor to https://accounts.google.com/o/oauth2/token" --width 1400

                                                # Aborting
                                                echo "Connection error accessing your Google Drive online in ${local_folder}"
                                                exit 9
                                        fi

                                        complete_objects=("${complete_objects[@]}" "$object")
                                done < <(drive list -long -trashed -depth $depth_value -no-prompt 2>&1 | extract_object_type_size_name)
                        fi
                        ;;
                # When the source objects are local, the list objects are made with "find or ls"
                local_fs)
                        # Building the 'sed' hidden objects select pattern with only:
                        #       - "$hidden_value"
                        sed_select_hidden_objects_pattern=$(select-hidden-objects "$hidden_value")
                        if [[ $depth_value -ge 1 ]]; then
                                # Building the exclude pattern to be used by 'find' with:
                                #       - "${excluded_regex_patterns[@]}"
                                #       - "${eval_esc_excluded_objects[@]}"
                                find_exclude_pattern=$(build-find-exclude-pattern 'true' 'true')

                                # Reading all objects with "find" after having 
                                #       - filtered the results with $find_exclude_pattern
                                #       - removed all leading './'
                                while IFS= read -d $'\n' -r object ; do
                                        if [[ "$object" == '.' ]]; then
                                                continue
                                        fi

                                        # Prepend a leading character symbolizing the object type followed by its size in B/KB/MB/TB
                                        object=$(.drive-prepend-object-type-size "$object")

                                        filtered_objects=("${filtered_objects[@]}" "$object")
                                done < <(eval find -L . -maxdepth $depth_value "$find_exclude_pattern" 2>/dev/null | rm_dot_slash | eval "$sed_select_hidden_objects_pattern")
                        elif [[ $depth_value -eq 0 ]]; then
                                # Building the 'grep' exclude pattern with only:
                                #       - "${excluded_regex_patterns[@]}"
                                #       - "${grep_esc_excluded_objects[@]}"
                                grep_exclude_pattern=$(build-grep-exclude-pattern 'true' 'true' 'local')

                                # Reading all objects with "ls" after having 
                                #       - filtered the results with "$grep_exclude_pattern"
                                if [[ ! -z "$grep_exclude_pattern" ]]; then
                                        while IFS= read -d $'\n' -r object ; do
                                                # Prepend a leading character symbolizing the object type followed by its size in B/KB/MB/TB
                                                object=$(.drive-prepend-object-type-size "$object")

                                                filtered_objects=("${filtered_objects[@]}" "$object")
                                        done < <(ls -A | eval "$grep_exclude_pattern" | eval "$sed_select_hidden_objects_pattern")
                                else
                                        while IFS= read -d $'\n' -r object ; do
                                                # Prepend a leading character symbolizing the object type followed by its size in B/KB/MB/TB
                                                object=$(.drive-prepend-object-type-size "$object")

                                                filtered_objects=("${filtered_objects[@]}" "$object")
                                        done < <(ls -A | insert_new_line | eval "$sed_select_hidden_objects_pattern")
                                fi
                        else
                                # When $depth_value is -1
                                # Building the exclude pattern to be used by 'find'
                                #       - "${excluded_regex_patterns[@]}"
                                #       - "${eval_esc_excluded_objects[@]}"
                                find_exclude_pattern=$(build-find-exclude-pattern 'true' 'true')

                                # Reading all objects with "find" after having 
                                #       - filtered the results with $find_exclude_pattern
                                #       - removed all leading './'
                                while IFS= read -d $'\n' -r object ; do
                                        if [[ "$object" == '.' ]]; then
                                                continue
                                        fi

                                        # Prepend a leading character symbolizing the object type followed by its size in B/KB/MB/TB
                                        object=$(.drive-prepend-object-type-size "$object")

                                        filtered_objects=("${filtered_objects[@]}" "$object")
                                done < <(eval  find -L . "$find_exclude_pattern" 2>/dev/null | rm_dot_slash | eval "$sed_select_hidden_objects_pattern")
                        fi
                        ;;
                select_file)
                        # Nothing to do here
                        ;;
        esac
else
        # .driveselect or .driveignore are NOT empty, 
        # so only recursively found objects within the listed objects will be affected by the command
        case $source in
                remote_fs)
                #-------Handling ${included_objects[@]}/${esc_included_objects[@]} & ${included_regex_patterns[@]}-
                        # Supported standard wildcards may be in $included_objects
                        # Building the 'grep' include pattern with:
                        #       - "${included_regex_patterns[@]}"
                        #       - "${grep_esc_included_objects[@]}"
                        grep_include_pattern=$(build-grep-include-pattern 'true' 'true' 'remote')

                        # Reading all objects from "drive list" after having 
                        #       - kept only:
                        #               + the object type (d: folder and -:file) 
                        #               + the object size (in B, KB, MB, TB...))
                        #               + the object name without its $local_folder_path_from_gd_root/ (all returned objects path start
                        #       - filtered the list only once with the $grep_include_pattern
                        if [[ $command != 'untrash' ]]; then
                                while IFS= read -d $'\n' -r object ; do
                                        if [[ "${object[@]}" =~ 'Get https://www.googleapis.com/drive/' ]]; then
                                                # Connection error
                                                # Displaying the error 
                                                zenity --error --title "Fatal connection error accessing your Google Drive online in ${noamp_local_folder}" --text="Could not connect to https://www.googleapis.com/drive/v2/files or/nor to https://accounts.google.com/o/oauth2/token" --width 1400

                                                # Aborting
                                                echo "Connection error accessing your Google Drive online in ${local_folder}"
                                                exit 9
                                        elif [[ "${object[@]}" =~ 'cannot be found remotely' ]]; then
                                                # $object does not exist remotely
                                                continue
                                        else
                                                # $object does exist remotely
                                                complete_objects=("${complete_objects[@]}" "$object")
                                        fi
                                done < <(drive list -long -depth $depth_value -no-prompt 2>&1 | extract_object_type_size_name | eval "$grep_include_pattern")
                        else
                                # Reading the trash
                                while IFS= read -d $'\n' -r object ; do
                                        if [[ "${object[@]}" =~ 'Get https://www.googleapis.com/drive/' ]]; then
                                                # Connection error
                                                # Displaying the error 
                                                zenity --error --title "Fatal connection error accessing your Google Drive online in ${noamp_local_folder}" --text="Could not connect to https://www.googleapis.com/drive/v2/files or/nor to https://accounts.google.com/o/oauth2/token" --width 1400

                                                # Aborting
                                                echo "Connection error accessing your Google Drive online in ${local_folder}"
                                                exit 9
                                        elif [[ "${object[@]}" =~ 'cannot be found remotely' ]]; then
                                                # $object does not exist remotely
                                                continue
                                        else
                                                # $object does exist remotely
                                                complete_objects=("${complete_objects[@]}" "$object")
                                        fi
                                done < <(drive list -long -trashed -depth $depth_value -no-prompt 2>&1 | extract_object_type_size_name | eval "$grep_include_pattern")
                        fi
                        ;;
                local_fs)
                        tmp_objects=()
                        tmp_filtered_objects=()

                        # Building the 'find' exclude pattern with:
                        #       - "${excluded_regex_patterns[@]}"
                        #       - "${eval_esc_excluded_objects[@]}"
                        find_exclude_pattern=$(build-find-exclude-pattern 'true' 'true')

                        # Building the 'grep' exclude pattern with:
                        #       - "${excluded_regex_patterns[@]}"
                        #       - "${grep_esc_excluded_objects[@]}"
                        grep_exclude_pattern=$(build-grep-exclude-pattern 'true' 'true' 'local')

                        # Building the 'sed' hidden objects select pattern with only:
                        #       - "$hidden_value"
                        sed_select_hidden_objects_pattern=$(select-hidden-objects "$hidden_value")

                #-------Handling ${included_objects[@]}--------------------------------------------
                        for included_object in "${included_objects[@]}"
                        do
                                # Doesn't $included_object contain supported standard wildcards?
                                if [[ -z $(echo "$included_object" | extract_standard_wildcards) ]]; then
                                        # No supported standard wildcards in $included_object
                                        if [[ -d "$included_object" ]]; then
                                                if [[ $depth_value -ge 1 ]]; then
                                                        # Reading all objects with "find" after having 
                                                        #       - included the results matching $included_object
                                                        #       - filtered the results with $find_exclude_pattern
                                                        while IFS= read -d $'\n' -r object ; do
                                                                # Prepend a leading character symbolizing the object type followed by its size in B/KB/MB/TB
                                                                object=$(.drive-prepend-object-type-size "$object")

                                                                tmp_objects=("${tmp_objects[@]}" "$object")
                                                        done < <(find -L "$included_object" -maxdepth $depth_value 2>/dev/null | eval "$grep_exclude_pattern" | eval "$sed_select_hidden_objects_pattern")
                                                elif [[ $depth_value -eq 0 ]]; then
                                                        if [[ ("$included_object" == '.') || ("$included_object" == '..') ]]; then
                                                                continue
                                                        fi

                                                        # Excluding the objects matching the patterns from:
                                                        # - ${excluded_regex_patterns[@]}
                                                        # - ${grep_esc_excluded_objects[@]}
                                                        if [[ ! -z "$grep_exclude_pattern" ]]; then
                                                                filtered_object=$(echo "$included_object" | eval "$grep_exclude_pattern" | eval "$sed_select_hidden_objects_pattern")
                                                        else
                                                                filtered_object=$(echo "$included_object" | eval "$sed_select_hidden_objects_pattern")
                                                        fi

                                                        if [[ -z "$filtered_object" ]]; then
                                                                # $included_object has just been excluded
                                                                continue
                                                        fi

                                                        # Prepend a leading character symbolizing the object type followed by its size in B/KB/MB/TB
                                                        filtered_object=$(.drive-prepend-object-type-size "$filtered_object")

                                                        tmp_objects=("${tmp_objects[@]}" "$filtered_object")
                                                else
                                                        # When $depth_value is -1
                                                        # Reading all objects with "find" after having 
                                                        #       - included the results matching $included_object
                                                        #       - filtered the results with $find_exclude_pattern
                                                        while IFS= read -d $'\n' -r object ; do
                                                                # Prepend a leading character symbolizing the object type followed by its size in B/KB/MB/TB
                                                                object=$(.drive-prepend-object-type-size "$object")

                                                                tmp_objects=("${tmp_objects[@]}" "$object")
                                                        done < <(find -L "$included_object" 2>/dev/null | eval "$grep_exclude_pattern" | eval "$sed_select_hidden_objects_pattern")
                                                fi

                                                # Concatenating tmp_objects[] with filtered_objects[] array
                                                tmp_filtered_objects=("${filtered_objects[@]}")
                                                filtered_objects=("${tmp_filtered_objects[@]}" "${tmp_objects[@]}")
                                                unset tmp_objects
                                                unset tmp_filtered_objects
                                        elif [[ -f "$included_object" ]]; then
                                                # $included_object is a file here
                                                # Excluding the objects matching the patterns from:
                                                # - ${excluded_regex_patterns[@]}
                                                # -${grep_esc_excluded_objects[@]}
                                                if [[ ! -z "$grep_exclude_pattern" ]]; then
                                                        filtered_object=$(echo "$included_object" | eval "$grep_exclude_pattern" | eval "$sed_select_hidden_objects_pattern")
                                                else
                                                        filtered_object=$(echo "$included_object" | eval "$sed_select_hidden_objects_pattern")
                                                fi

                                                if [[ -z "$filtered_object" ]]; then
                                                        # $included_object has just been excluded
                                                        continue
                                                fi

                                                # Prepend a leading character symbolizing the object type followed by its size in B/KB/MB/TB
                                                filtered_object=$(.drive-prepend-object-type-size "$filtered_object")

                                                filtered_objects=("${filtered_objects[@]}" "$filtered_object")
                                        else
                                                # $included_object does not exist locally
                                                continue
                                        fi
                                else
                                        # Some supported standard wildcard(s) in $included_object
                                        if [[ $depth_value -ge 0 ]]; then
                                                # Reading all objects with "find" after having 
                                                #       - included the results matching $included_object
                                                #       - excluded the objects matching the patterns from:
                                                #               + ${excluded_regex_patterns[@]}
                                                #               + ${grep_esc_excluded_objects[@]}
                                                #       - removed all leading './'
                                                while IFS= read -d $'\n' -r object ; do
                                                        # Prepend a leading character symbolizing the object type followed by its size in B/KB/MB/TB
                                                        object=$(.drive-prepend-object-type-size "$object")

                                                        tmp_objects=("${tmp_objects[@]}" "$object")
                                                done < <(find -L -maxdepth $depth_value -path "./$included_object" 2>/dev/null | eval "$grep_exclude_pattern" | rm_dot_slash | eval "$sed_select_hidden_objects_pattern")
                                        else
                                                # When $depth_value is -1
                                                # Reading all objects with "find" after having 
                                                #       - included the results matching $included_object
                                                #       - excluded the objects matching the patterns from:
                                                #               + ${excluded_regex_patterns[@]}
                                                #               + ${grep_esc_excluded_objects[@]}
                                                #       - removed all leading './'
                                                while IFS= read -d $'\n' -r object ; do
                                                        # Prepend a leading character symbolizing the object type followed by its size in B/KB/MB/TB
                                                        object=$(.drive-prepend-object-type-size "$object")

                                                        tmp_objects=("${tmp_objects[@]}" "$object")
                                                done < <(find -L -path "./$included_object" 2>/dev/null | eval "$grep_exclude_pattern" | rm_dot_slash | eval "$sed_select_hidden_objects_pattern")
                                        fi

                                        # Concatenating tmp_objects[] with filtered_objects[] array
                                        tmp_filtered_objects=("${filtered_objects[@]}")
                                        filtered_objects=("${tmp_filtered_objects[@]}" "${tmp_objects[@]}")
                                        unset tmp_objects
                                        unset tmp_filtered_objects
                                fi
                        done

                #-------Handling ${included_regex_patterns[@]}-------------------------------------
                        if [[ ${#included_regex_patterns[@]} -ne 0 ]]; then
                                # Building the 'find' include pattern with:
                                #       - "${included_regex_patterns[@]}"
                                find_include_pattern=$(build-find-include-pattern 'true' 'false')

                                if [[ $depth_value -ge 1 ]]; then
                                        # Reading all objects with "find" while
                                        #       - including the objects matching the patterns from ${included_regex_patterns[@]}
                                        #       - excluding the objects matching the patterns from
                                        #               + ${excluded_regex_patterns[@]}
                                        #               + ${grep_esc_excluded_objects[@]}
                                        #       - removing all leading './'
                                        while IFS= read -d $'\n' -r object ; do
                                                # Prepend a leading character symbolizing the object type followed by its size in B/KB/MB/TB
                                                object=$(.drive-prepend-object-type-size "$object")

                                                tmp_objects=("${tmp_objects[@]}" "$object")
                                        done < <(eval find -L . -maxdepth $depth_value "$find_include_pattern" 2>/dev/null | eval "$grep_exclude_pattern" | rm_dot_slash | eval "$sed_select_hidden_objects_pattern")
                                elif [[ $depth_value -eq 0 ]]; then
                                        # Building the 'grep' include pattern with:
                                        #       - "${included_regex_patterns[@]}"
                                        grep_include_pattern=$(build-grep-include-pattern 'true' 'false' 'local')

                                        # Reading all objects with "ls" after having 
                                        #       - included the objects matching the patterns from ${included_regex_patterns[@]}
                                        #       - excluded the results with patterns from:
                                        #               + ${excluded_regex_patterns[@]}
                                        #               + ${grep_esc_excluded_objects[@]}
                                        if [[ ! -z "$grep_exclude_pattern" ]]; then
                                                while IFS= read -d $'\n' -r object ; do
                                                        # Prepend a leading character symbolizing the object type followed by its size in B/KB/MB/TB
                                                        object=$(.drive-prepend-object-type-size "$object")

                                                        tmp_objects=("${tmp_objects[@]}" "$object")
                                                done < <(ls -A | eval "$grep_include_pattern" | eval "$grep_exclude_pattern" | eval "$sed_select_hidden_objects_pattern")
                                        else
                                                while IFS= read -d $'\n' -r object ; do
                                                        # Prepend a leading character symbolizing the object type followed by its size in B/KB/MB/TB
                                                        object=$(.drive-prepend-object-type-size "$object")

                                                        tmp_objects=("${tmp_objects[@]}" "$object")
                                                done < <(ls -A | eval "$grep_include_pattern" | eval "$sed_select_hidden_objects_pattern")
                                        fi
                                else
                                        # When $depth_value is -1
                                        # Reading all objects with "find" after having 
                                        #       - included the objects matching the patterns from ${included_regex_patterns[@]}
                                        #       - excluded the objects matching the patterns from
                                        #               + ${excluded_regex_patterns[@]}
                                        #               + ${grep_esc_excluded_objects[@]}
                                        while IFS= read -d $'\n' -r object ; do
                                                # Prepend a leading character symbolizing the object type followed by its size in B/KB/MB/TB
                                                object=$(.drive-prepend-object-type-size "$object")

                                                tmp_objects=("${tmp_objects[@]}" "$object")
                                        done < <(eval find -L "$find_include_pattern" 2>/dev/null | eval "$grep_exclude_pattern" | rm_dot_slash | eval "$sed_select_hidden_objects_pattern")
                                fi

                                # Concatenating tmp_objects[] with filtered_objects[] array
                                tmp_filtered_objects=("${filtered_objects[@]}")
                                filtered_objects=("${tmp_filtered_objects[@]}" "${tmp_objects[@]}")
                                unset tmp_objects
                                unset tmp_filtered_objects
                        fi
                        ;;
                select_file)
                        # It has already been filtered
                        filtered_objects=("${included_objects[@]}")
                        ;;
        esac
fi

#----------------Filtering all remote objects listed in complete_objects if necessary--------------
if [[ ($source == 'remote_fs') && ((${#excluded_regex_patterns[@]} -ne 0) || (${#grep_esc_excluded_objects[@]} -ne 0)) ]]; then
        # Building the 'grep' exclude pattern with:
        #       - ${excluded_regex_patterns[@]}
        grep_exclude_regex_pattern=$(build-grep-exclude-pattern 'true' 'false' 'remote')

        # Building the 'grep' exclude pattern with:
        #       - "${grep_esc_excluded_objects[@]}"
        grep_exclude_pattern=$(build-grep-exclude-pattern 'false' 'true' 'remote')

        # For all objects in ${complete_objects[@]}
        for ((complete_objects_index=0; complete_objects_index<${#complete_objects[@]}; complete_objects_index++))
        do
                # Filtering the object names according to .driveignore
                if [[ ! -z "$grep_exclude_regex_pattern" ]]; then
                        filtered_object=$(echo "${complete_objects[complete_objects_index]}" | eval "$grep_exclude_regex_pattern")
                        if [[ -z "$filtered_object" ]]; then
                                unset complete_objects[complete_objects_index]
                                complete_objects=("${complete_objects[@]}")
                                ((complete_objects_index--))
                                continue
                        fi
                fi
                
                # Filtering the object names according to escaped excluded objects from .driveselect
                if [[ ! -z "$grep_exclude_pattern" ]]; then
                        filtered_object=$(echo "${complete_objects[complete_objects_index]}" | eval "$grep_exclude_pattern")
                        if [[ -z "$filtered_object" ]]; then
                                if [[ ("$command" == 'delete') || ("$command" == 'trash') ]]; then
                                        # For both commands, we need to remove later the file's folder from the complete_objects list
                                        object_type=$(echo "${complete_objects[complete_objects_index]}" | extract_object_type)
                                        if [[ $object_type == '-' ]]; then
                                                # Object is a file: getting its path after having removed its leading stats
                                                excluded_object_full_name=$(echo "${complete_objects[complete_objects_index]}" | rm_object_stats)
                                                excluded_object_path=$(dirname "$excluded_object_full_name")

                                                # As long as there is a path
                                                while [[ "$excluded_object_path" != \. ]]
                                                do
                                                        # - Escaping the '/$.*[\]^' characters for later sed searched string
                                                        # - Letters, digits and (){}+?| must not be escaped
                                                        esc_excluded_object_path="$(echo "$excluded_object_path" | escape_sed_bre_search_string)"
                                                        esc_excluded_objects_paths=("${esc_excluded_objects_paths[@]}" "$esc_excluded_object_path")
                                                        # Getting the parent's parent
                                                        excluded_object_path=$(dirname "$excluded_object_path")
                                                done

                                                # Sorting the object names in alphabatical ordser & Removing all duplicate entries
                                                if [[ ${#esc_excluded_objects_paths[@]} -ne 0 ]]; then
                                                        IFS=$'\n' esc_excluded_objects_paths=($(sort -u <<<"${esc_excluded_objects_paths[*]}"))
                                                        unset IFS
                                                fi
                                        fi
                                fi

                                unset complete_objects[complete_objects_index]
                                complete_objects=("${complete_objects[@]}")
                                ((complete_objects_index--))
                        fi
                fi
        done
fi

# Array which contains all objects names from ${complete_objects[@]} filtered with:
#       - ${excluded_regex_patterns[@]}         read from .driveignore
#       - ${grep_esc_excluded_objects[@]}        read from .driveselect and escaped for grep
# Job already done for 'local_fs' and 'select_file' sources
if [[ $source == 'remote_fs' ]]; then
        filtered_objects=("${complete_objects[@]}")
fi

#--------------------------Sorting the object names in alphabatical order--------------------------
#--------------------------Removing all duplicate entries------------------------------------------
# dismissing the first columns describing the object stats
if [[ ${#filtered_objects[@]} -ne 0 ]]; then
        IFS=$'\n' sorted_objects=($(sort -u -t ' ' -k 3 <<<"${filtered_objects[*]}"))
        unset IFS
fi

#--------------------------Removing some unnecessary folders for delete & trash commands-----------
# if necessary from SORTED ${sorted_objects[@]}
if [[ (("$command" == 'delete') || ("$command" == 'trash')) && (${#esc_excluded_objects_paths[@]} -ne 0) ]]; then
        for ((sorted_objects_index=0; sorted_objects_index<${#sorted_objects[@]}; sorted_objects_index++))
        do
                for esc_excluded_object_path in "${esc_excluded_objects_paths[@]}"
                do
                        # Checking whether the object is the excluded folder
                        trimmed_object=$(echo "${sorted_objects[sorted_objects_index]}" | rm_object_type_size_excluded_object_path)
                        if [[ -z "$trimmed_object" ]]; then
                                object_type=$(echo "${sorted_objects[sorted_objects_index]}" | extract_object_type)
                                if [[ $object_type == 'd' ]]; then
                                        # The object is the excluded folder
                                        unset sorted_objects[sorted_objects_index]
                                        sorted_objects=("${sorted_objects[@]}")
                                        ((sorted_objects_index--))
                                        continue 2
                                fi
                        fi
                done
        done
fi

# Array which will contain all objects names from ${sorted_objects[@]} trimmed:
#       - only for delete and trash commands
#       - if a file has been previously filtered, we make sure its folder is removed from the final list
trimmed_objects=("${sorted_objects[@]}")

#--------------------------Returning the listed, filtered, sorted, unduplicated and trimmed objects list
if [[ ${#trimmed_objects[@]} -ne 0 ]]; then
        printf '%s\n' "${trimmed_objects[@]}"
fi